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Heritage, Volume 6, Issue 9 (September 2023) – 23 articles

Cover Story (view full-size image): The interactive dynamics of social media are increasingly influencing the digital efforts of Holocaust institutions. This study undertakes an exploration of the user dynamics of social media platforms associated with Holocaust museums and memorials in Germany and Italy. The research aims to understand the motivations, interests and online behaviour of these users. Despite the different historical narratives and public policies in the two countries, a common thread emerged from the data. Users from both countries showed remarkably similar interests, motivations and engagement patterns when interacting with Holocaust-related social media profiles. This convergence suggests that, at least in the realm of social media, shared human interests and emotions about the Holocaust may transcend national boundaries and narratives. View this paper
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29 pages, 9531 KiB  
Article
Novel Paradigms in the Cultural Heritage Digitization with Self and Custom-Built Equipment
by Giovanni Bacci, Marco Bozzola, Marco Gaiani and Simone Garagnani
Heritage 2023, 6(9), 6422-6450; https://doi.org/10.3390/heritage6090336 - 21 Sep 2023
Cited by 1 | Viewed by 1560
Abstract
In the field of the Cultural Heritage (CH), image-based 2D and 3D digital acquisition is today the most common technique used to create digital replicas of existing artifacts. This is carried out for many reasons, such as the following: research, analysis, preservation, conservation, [...] Read more.
In the field of the Cultural Heritage (CH), image-based 2D and 3D digital acquisition is today the most common technique used to create digital replicas of existing artifacts. This is carried out for many reasons, such as the following: research, analysis, preservation, conservation, communication, and valorization. These activities usually require complementary specialized equipment, tailored to specific purposes in order to achieve the desired results. This equipment is not easy-to-find on the market, it is not always affordable for museums operators; it is sometimes expensive, and it usually needs tricky customizations. However, the development in recent years of more generalized, versatile, and affordable instruments and technologies has led to new approaches, leveraging a new generation of low-cost, adaptable equipment. This paper presents custom-made equipment following this new path, designed to provide optimized results through calibrated tools alongside the software to make it work. The essay focuses specifically on the self-production of instruments for the digital reproduction of ancient drawings, manuscripts, paintings, and other museum artifacts and their transformative impact on digitization techniques. The outcomes of self and custom-built equipment specifically produced for the contexts described in this paper highlight their potential to foster interdisciplinary collaboration, facilitate scholarly research, enhance conservation efforts, and promote cultural exchange. The final goal is to propose inexpensive equipment that is easy to use (even by not specifically trained operators) and that provides remarkable quality. Full article
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<p>The 2D and 3D pipelines with, highlighted, the phases where new software applications are used.</p>
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<p>Comparative SPD emission charts by producers, in which the continuous spectrum of visible light for each tested light is clearly highlighted (from left to right Osram, Godox and Relio<sup>2</sup>).</p>
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<p>3D printed components in ABS to support the Relio<sup>2</sup> lights.</p>
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<p>The first prototype for horizontal acquisitions.</p>
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<p>The first prototype: the bill of the custom-built parts (annotations in mm, <b>left</b>) and the alignment gauge (<b>right</b>).</p>
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<p>The darkening system to minimize erratic reflections and parasite light as it progressed over the years: the latest (bottom) version guarantees better covering and it can be easily assembled.</p>
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<p>The second improved prototype for horizontal acquisitions, with the raised frame.</p>
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<p>The second improved prototype: the bill of the custom-built parts (annotations in mm).</p>
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<p>The aluminum frame designed according to structural simulations through a FEM solver.</p>
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<p>The prototype custom stand for vertical acquisitions.</p>
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<p>Our calibrated roundtable and the 3D test-field plate to fold.</p>
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<p>MTF evaluation during the calibration step: a laser-leveled orientation to check planarity.</p>
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<p>The extension of the acquisition area as it has evolved over the years: in the top left, the huge space necessary in Venice (2014), in the top right an improvement in Florence (2018) and in the bottom, from left to right, Milan (2019 and 2022).</p>
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<p>Comparison between the solutions used in 2014 (<b>a</b>) and in 2022 (<b>b</b>), with their set of components.</p>
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<p>Normal maps as extracted by commercial software for texture maps production (detail in (<b>a</b>)), and normal maps automatically extracted by <span class="html-italic">nLights</span> software: results from 4 pictures with 45° lights only (detail in (<b>b</b>)), and normal map from 8 pictures with 45° + 15° light sources on the same subject (detail in (<b>c</b>)).</p>
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<p>The <span class="html-italic">Porcupinefish</span> (<b>left</b>) and the <span class="html-italic">Globe by astronomer Horn d’Arturo</span> (<b>right</b>) as reproduced using the developed tools (image courtesy by Filippo Fantini).</p>
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<p>Comparative results in the reproduction of parchments, inks, and gold foils: on the left a traditional, static 2D picture, on the right the 3D model generated, in which the whole geometry and the optical properties of each material are better replicated and dynamically visualized under different light directions.</p>
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<p>The acquisition plan using the vertical movable rig, considering spaces and distances to reach the desired resolution according to the camera features (different colors mean different shots).</p>
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<p>The visualization of the <span class="html-italic">Annunciation</span>. The whole 3D model (<b>a</b>) can be dynamically zoomed in and rotated to show behaviors of materials to light coming from different angles, such as the gold foil reflectance (<b>b</b>) or the vibrant colors in one of the scenes in the <span class="html-italic">predella</span> (<b>c</b>).</p>
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25 pages, 21480 KiB  
Article
Echoes of the Past: Unveiling the Kharga Oasis’ Cultural Heritage and Climate Vulnerability through Millennia
by Hossam Ismael, Waleed Abbas, Heba Ghaly and Ahmed M. El Kenawy
Heritage 2023, 6(9), 6397-6421; https://doi.org/10.3390/heritage6090335 - 19 Sep 2023
Cited by 2 | Viewed by 2312
Abstract
The civilization and tangible cultural heritage of the Kharga Oasis has a historical precedence over that of the old Nile Valley civilization. Approximately 12,000 years ago, a significant prehistoric migration occurred from the Kharga Oasis to the Nile Valley. This event was motivated [...] Read more.
The civilization and tangible cultural heritage of the Kharga Oasis has a historical precedence over that of the old Nile Valley civilization. Approximately 12,000 years ago, a significant prehistoric migration occurred from the Kharga Oasis to the Nile Valley. This event was motivated by climate change and the southward shift of the Inter-Tropical Convergence Zone (ITCZ), which caused a shift in Egypt’s savannah forests from abundant vegetation to an extremely dry desert. The present study investigates the progressive deterioration of the tangible cultural and civilized legacy of the Kharga Oasis over the course of several millennia, positing that this phenomenon can be attributed to the area’s vulnerability to paleoclimatic fluctuations. The evaluation of the Kharga Oasis’ susceptibility to climate change was predicated on the scrutiny of petroglyphs that were unearthed at different sites within the Oasis. This analysis was reinforced by paleoclimate information and radiocarbon dating (C14). The utilization of an interdisciplinary approach yielded significant insights into the dynamic climate patterns and their effects on the Kharga Oasis across temporal scales. The results illustrated a noteworthy alteration in climate, which caused the conversion of the Oasis terrain from being heavily wooded to becoming arid, mainly due to extended periods of drought. The present research postulates a novel and alternate hypothesis concerning the archaeological chronology of human habitation in the Kharga Oasis from ancient eras, predicated on the analysis of pictorial depictions on rock surfaces. The findings of this study made a noteworthy contribution to the current corpus of knowledge regarding the vulnerability of the ancient Egyptian society to the impacts of climate variability. Moreover, the petroglyphs’ depictions provided a distinctive viewpoint on the climatic fluctuations that occurred in the Sahara and North Africa throughout the Holocene epoch, as well as the fundamental causative factors. Full article
(This article belongs to the Special Issue Challenges to Heritage Conservation under Climate Change)
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<p>Location of the Kharga Oasis.</p>
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<p>Reconstructions of paleoclimate over four zones across the Egyptian Western Desert. Source: [<a href="#B49-heritage-06-00335" class="html-bibr">49</a>].</p>
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<p>Distribution of the Egyptian settlements in the Western Desert throughout the Holocene. Source: [<a href="#B1-heritage-06-00335" class="html-bibr">1</a>,<a href="#B11-heritage-06-00335" class="html-bibr">11</a>,<a href="#B35-heritage-06-00335" class="html-bibr">35</a>,<a href="#B51-heritage-06-00335" class="html-bibr">51</a>].</p>
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<p>The gallery range of animal species represented in the Kharga Oasis, with the record of fauna found in the rock art of the Kharga Oasis showing a common grouping of lioness, Oryx, and giraffe.</p>
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<p>A collection of cultural remains that have been carefully chosen from the Kharga Oasis. The presented compilation exhibits a diverse array of artifacts and archaeological remnants, which function as tangible evidence of historical climate fluctuations within the given geographical area; (<b>A</b>,<b>B</b>). Remains of pottery vessels, (<b>C</b>,<b>D</b>). irrigation wells, (<b>E</b>,<b>F</b>). cooking tools, (<b>G</b>,<b>H</b>). Skeletal remains, and (<b>I</b>,<b>J</b>). security mentoring points.</p>
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<p>Petroglyph from the northeastern sites of the Kharga Oasis showing different types of chattels.</p>
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<p>Petroglyph from the central sites of the Kharga Oasis illustrating different types of chattels.</p>
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<p>An illustrative example of the depictions of the pecking technique, a traditional technique used in the creation of petroglyphs in the study domain.</p>
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<p>Expressive three-dimensional representations of the routes, maps, and guide signs.</p>
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<p>An array of distinct styles employed in the depiction of landscapes across various periods and cultural contexts in the Kharga Oasis.</p>
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<p>(<b>a</b>) Current positions of the ITCZ movement in summer with the southern margin of the Western Desert and wind directions, and (<b>b</b>) the derived early ITCZ movement and winds in the winter of Holocene. Source: [<a href="#B59-heritage-06-00335" class="html-bibr">59</a>].</p>
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<p>Spatial combination of the world climate change during preindustrial times (AD w1700) in comparison to the MH (w6000 cal years BP). Source: (in [<a href="#B35-heritage-06-00335" class="html-bibr">35</a>]—Figure 18. Spatial synthesis: global climate change for the preindustrial period (AD ~ 1700) compared to the MH (~6000 cal years BP).).</p>
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20 pages, 1159 KiB  
Article
Social Media as Lieux for the Convergence of Collective Trajectories of Holocaust Memory—A Study of Online Users in Germany and Italy
by Stefania Manca and Marcello Passarelli
Heritage 2023, 6(9), 6377-6396; https://doi.org/10.3390/heritage6090334 - 15 Sep 2023
Cited by 2 | Viewed by 1597
Abstract
By articulating a shared victimhood or guilt or responsibility, memorial museums are designed as ethical projects that encourage visitors to learn from the past to build a “better future”. In contemporary Europe, Holocaust memorials and museums constitute a trajectory of remembrance about public [...] Read more.
By articulating a shared victimhood or guilt or responsibility, memorial museums are designed as ethical projects that encourage visitors to learn from the past to build a “better future”. In contemporary Europe, Holocaust memorials and museums constitute a trajectory of remembrance about public Holocaust memory that consolidates political legitimacy and articulates national narratives of the legacy of WWII. In parallel, increasing adoption and spread of digital technologies have resulted in a convergence and a globalisation of themes and user interests associated with Holocaust memory. The purpose of this study is to investigate the perspectives and interests of users of the social media profiles of a group of Holocaust museums and memorials in Germany and Italy. Using a primarily quantitative approach, the study sought to understand the motivations, interests, and online activities of users of nine Holocaust museums and memorials. While national narratives regarding public policy continue to diverge in the two countries, users express a convergence of interests and motivations when using these social media profiles. This dual venture of Holocaust memory is a complex yet powerful example of how the globalisation of digital media is playing an increasingly significant role in European contemporary society. Full article
(This article belongs to the Special Issue Museums for Heritage Preservation and Communication)
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<p>Statistical averages for topics related to the Holocaust.</p>
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<p>The average score for items on personal motivations for following a page.</p>
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<p>Averages for items on page-related motivations for following a page.</p>
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<p>Statistical averages for items based on their reported frequency of (inter)action.</p>
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<p>Averages for items related to the content and management of the page.</p>
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19 pages, 65524 KiB  
Article
New Chemical Systems for the Removal of Calcareous Encrustations on Monumental Fountains: A Case Study of the Nymphaeum of Cerriglio
by Claudia Squarciafico, Giorgia Salatino, Mauro Francesco La Russa, Teresa Peluso, Lorenzo Basile, Fina Serena Barbagallo, Monica Coppola and Andrea Macchia
Heritage 2023, 6(9), 6358-6376; https://doi.org/10.3390/heritage6090333 - 15 Sep 2023
Cited by 1 | Viewed by 1209
Abstract
This study aims to compare the effects of some chemical agents on the removal of calcareous encrustations, which are characterized by the presence of both calcium and silicon. The experimentation was conducted during the conservation treatments of Cerriglio’s nymphaeum (Massa Lubrense, Naples, Italy). [...] Read more.
This study aims to compare the effects of some chemical agents on the removal of calcareous encrustations, which are characterized by the presence of both calcium and silicon. The experimentation was conducted during the conservation treatments of Cerriglio’s nymphaeum (Massa Lubrense, Naples, Italy). Tests were carried out in the laboratory on specimens and in situ to define the most efficient choice between several chelant agents, in the recovery of calcium and silicon, using ICP/OES and spectrocolorimetric and microscopic analyses. Full article
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<p>The fountain before the restoration treatment.</p>
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<p>Details of yellow encrustation (<b>a</b>) and the dark blue decorations (<b>b</b>).</p>
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<p>Sampling for IR and SEM/EDS analysis.</p>
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<p>Specimens realized in laboratory: (<b>a</b>) Samples with arriccio, intonachino, and painted layer; (<b>b</b>) arriccio, intonachino, color, and encrustation.</p>
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<p>FTIR spectrum of the encrustation sample.</p>
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<p>Image obtained via SEM-EDS analysis on encrustation.</p>
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<p>IR spectrum of the white pigment sample.</p>
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<p>Image obtained via SEM-EDS analysis on white “background”.</p>
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<p>Image obtained via SEM-EDS analysis on dark blue sample.</p>
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<p>Ca (ppm) graph extracted from solutions. GLDA1 (light blue); Na<sub>2</sub>EDTA (green); GLDA2 (orange); Na<sub>4</sub>EDTA (yellow); Resin Ionex H+ (dark blue); AB57 (blue); (NH<sub>4</sub>)<sub>2</sub>HCO<sub>3</sub> (grey).</p>
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<p>Si (ppm) graph extracted from solutions. GLDA1 (blue); GLDA2 (orange); EDTA Na<sub>2</sub> (green); EDTA Na<sub>4</sub> (yellow); Ionex H+ resin (dark blue); AB57 (blue); (NH<sub>4</sub>)<sub>2</sub>HCO<sub>3</sub> (grey).</p>
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<p>This picture shows the test tube before the application of the encrustation layer, with the layer, and after its removal.</p>
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<p>The images show the analysis realized on the basin’s surface with a portable optical microscope: (<b>a</b>) shows the operation; (<b>b</b>) shows, respectively, the left side (untreated) and the right side (treated).</p>
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<p>The images show a portion of the tank decoration. (<b>a</b>) The portion before applying GLDA2 solution. (<b>b</b>) The same portion after the treatment.</p>
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<p>The basin with yellow encrustation before GLDA2 solution application.</p>
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<p>The basin after GLDA2 solution application.</p>
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15 pages, 10119 KiB  
Article
Sustainability and Energy Efficiency in the World Heritage Site of the Historic Centre of Mexico City
by Krisangella Sofia Murillo Camacho, Kalliopi Fouseki and Hector Altamirano
Heritage 2023, 6(9), 6343-6357; https://doi.org/10.3390/heritage6090332 - 15 Sep 2023
Cited by 1 | Viewed by 1930
Abstract
On 26 April 2017, Mexico formally adopted the 2030 Sustainable Development Agenda to link the national government to local governments, the private sector, civil society and academia. The restoration of heritage residential buildings (recovery programme) and the construction of new residential buildings aim [...] Read more.
On 26 April 2017, Mexico formally adopted the 2030 Sustainable Development Agenda to link the national government to local governments, the private sector, civil society and academia. The restoration of heritage residential buildings (recovery programme) and the construction of new residential buildings aim to create a diversified environment for populations at different economic levels. However, the restoration programme faces conservation challenges. Given this context, this paper presents the results of in-depth, semi-structured interviews conducted with stakeholders in Mexico’s heritage and energy sectors. The duration of each interview was approximately two hours, with 52,372 total interview words. The paper identifies prevailing opinions regarding prioritising historical values, energy efficiency, historic buildings and users concerning Mexico City’s Historical Centre, a World Heritage Site needing a more appropriate sustainable development plan. Using grounded theory and thematic analysis, the interview data were analysed based on the interrelationship between thermal comfort, energy efficiency and heritage conservation changes over time. The results of this research will strengthen our understanding of the interventions and processes involved in managing and living in this World Heritage Site and its future impacts on buildings. The approach also underscores the importance of how stakeholders prioritise different values in making energy efficiency-promoting decisions and enhances awareness of the decision-making process and actions adopted by heritage building users. Thus, understanding the dynamic interrelationship between values, users and energy could improve the sustainable management of heritage sites and future development. Full article
(This article belongs to the Special Issue Cultural Heritage Management and Preservation Policies)
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<p>Macro-level thematic map with the main categories of conservation and management projects, retaining heritage value and adaptation to contemporary needs.</p>
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<p>Micro-level thematic map focusing on one of the three main themes: retaining heritage value.</p>
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<p>Identified themes that affect the drivers and challenges of decision-making, as determined by the stakeholders, and relationships between the three main themes.</p>
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15 pages, 13263 KiB  
Article
Unveiling the Effectiveness of Innovative Commercial Coatings Used for the Preservation of Natural Stone—A Contribution
by Luís Dias, Ricardo Nunes, Mafalda Costa, Ana Teresa Caldeira, José Mirão and Pedro Barrulas
Heritage 2023, 6(9), 6328-6342; https://doi.org/10.3390/heritage6090331 - 14 Sep 2023
Viewed by 1096
Abstract
The preservation of natural stone heritage is still a major challenge for the scientific community. This topic assumes a greater importance since it impacts economic and socio-cultural values. Recent research has indicated that water action and microorganism activity are among the major contributors [...] Read more.
The preservation of natural stone heritage is still a major challenge for the scientific community. This topic assumes a greater importance since it impacts economic and socio-cultural values. Recent research has indicated that water action and microorganism activity are among the major contributors to the deterioration of this material. Despite the emergence of new protective solutions in the market, some constraints still need to be overcome. This study aims to contribute to unveiling the effectiveness of innovative commercial coatings on the preservation of natural stone frequently used in built heritage. Four different commercial coatings are assessed regarding their compatibility with the substrata and effectiveness against UV radiation, water action, and microbial development under accelerated ageing. The protective solutions are tested on five different Portuguese lithotypes, including carbonate and silicate-based stones. Colour change is measured to assess compatibility, while profilometric change of the stones’ surface and antimicrobial potential are evaluated to determine their effectiveness. Our research demonstrates that the solution that exhibits the greatest compatibility and effectiveness potential is composed of modified silanes and siloxanes derivatives. Full article
(This article belongs to the Special Issue New Progress of Inorganic Materials in Heritage Science)
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<p>Visual representation of the colour alteration of the mock-ups after their treatment and ageing. (<b>a</b>) lithotype A (limestone); (<b>b</b>) lithotype B (limestone); (<b>c</b>) lithotype C (marble); (<b>d</b>) lithotype D (marble); (<b>e</b>) lithotype E (slate). (<span class="html-fig-inline" id="heritage-06-00331-i018"><img alt="Heritage 06 00331 i018" src="/heritage/heritage-06-00331/article_deploy/html/images/heritage-06-00331-i018.png"/></span>) not coated; (<span class="html-fig-inline" id="heritage-06-00331-i019"><img alt="Heritage 06 00331 i019" src="/heritage/heritage-06-00331/article_deploy/html/images/heritage-06-00331-i019.png"/></span>) coating 1 (microemulsion based on modified silanes and siloxanes); (<span class="html-fig-inline" id="heritage-06-00331-i020"><img alt="Heritage 06 00331 i020" src="/heritage/heritage-06-00331/article_deploy/html/images/heritage-06-00331-i020.png"/></span>) coating 2 (microemulsion based on nanosilanes, siloxanes, and C6 fluorinated compounds); (<span class="html-fig-inline" id="heritage-06-00331-i021"><img alt="Heritage 06 00331 i021" src="/heritage/heritage-06-00331/article_deploy/html/images/heritage-06-00331-i021.png"/></span>) coating 3 (aqueous suspension of TiO<sub>2</sub> dispersed in an acrylic polymer); (<span class="html-fig-inline" id="heritage-06-00331-i022"><img alt="Heritage 06 00331 i022" src="/heritage/heritage-06-00331/article_deploy/html/images/heritage-06-00331-i022.png"/></span>) coating 4 (waterproofing based on modified silanes and siloxanes and C6 fluorinated compounds, with polyurethane).</p>
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<p>Determination of the roughness parameters after accelerated ageing of the mock-ups of lithotype C, using 3D surface micro-reconstructions. Mean and standard deviation values were obtained after nine measurements on each mock-up.</p>
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<p>Visual representation of the antimicrobial effects of the four coatings applied on lithotype E (slate). The images on the right side were included to highlight the microbial growth on the stones; white areas represent the microbial colonies. The scale bars represent 5.0 mm.</p>
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17 pages, 11622 KiB  
Article
Non-Destructive Testing of Dalle de Verre Windows by Fernand Léger and Alexandre Cingria in Switzerland
by Johannes Hugenschmidt, Sophie Wolf and Christophe Gosselin
Heritage 2023, 6(9), 6311-6327; https://doi.org/10.3390/heritage6090330 - 9 Sep 2023
Viewed by 1542
Abstract
Dalle de verre windows consist of thick slabs of coloured glass set in a matrix of reinforced concrete. The invention of this special art form is closely linked to the developments in modern architecture in the first half of the 20th century that [...] Read more.
Dalle de verre windows consist of thick slabs of coloured glass set in a matrix of reinforced concrete. The invention of this special art form is closely linked to the developments in modern architecture in the first half of the 20th century that are characterized by using new technologies such as steel-frame construction, reinforced concrete and the increasing use of glass. Many of these windows are showing damage, some of it severe. Until now, the causes of damage have hardly been investigated and there is still no practical and suitable approach to the analysis of the state of conservation of dalle de verre glazings. One of the main objectives of an interdisciplinary project (2019–2021) was therefore to evaluate the potential of non-destructive techniques for the characterisation of and identification of damage of dalle the verre windows in their structural, physical and climatic context. Various non-destructive methods (Ground-Penetrating Radar, Electric resistivity, Half-cell potential, Ultrasonics, Induction, Magnet and Thermography) have been tested on two prominent dalle de verre examples: the windows created by Fernand Léger for the church of Saint-Germain d’Auxerre in Courfaivre (Swiss Jura mountains) and the large tripartite by Alexandre Cingria once decorating the choir window church of the Franciscan monastery at Fribourg, Switzerland. The results of the analyses presented in this paper provide valuable information on the advantages and limitations as well as the costs of the methods used. Full article
(This article belongs to the Section Cultural Heritage)
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<p>Pentecost, Alexandre Cingria, 1938. Some of the 24 panels of the original window, now preserved in the archives of the Franciscan Monastery in Fribourg (<b>a</b>) and detail of the inner surface of one panel (<b>b</b>); (<b>c</b>), diagram showing the degree of damage of all 24 four panels according to their previous position in the window.</p>
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<p>Annunciation, Fernand Léger, 1954. Dalle de verre window on the southern façade of Saint-Germain d’Auxerre at Courfaivre, Switzerland. View from the outside (<b>a</b>) and from the inside (<b>b</b>) © 2023, ProLitteris, Zurich.</p>
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<p>Feeding the multitude, Fernand Léger, 1954. Dalle de verre window in the north-east bay of the choir of Saint-Germain d’Auxerre at Courfaivre, Switzerland. View from outside (<b>a</b>) and from the inside (<b>b</b>) © 2023, ProLitteris, Zurich.</p>
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<p>Induction, Signal at primary and secondary coils without (<b>a</b>) and with (<b>b</b>) rebar.</p>
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<p>GPR principles.</p>
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<p>Measurement of half-cell potential, normal setup (<b>a</b>) and setup used in Courfaivre (<b>b</b>).</p>
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<p>Existence and position of rebars on the medallion of the Annunciation, magnet (<b>a</b>), induction (<b>b</b>) and GPR (<b>c</b>) © 2023, ProLitteris, Zurich.</p>
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<p>Two places in the medallion of the Annunciation with exposed rebar: overview (<b>a</b>) and details (<b>b</b>,<b>c</b>) © 2023, ProLitteris, Zurich.</p>
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<p>GPR data recorded on horizontal line (<b>a</b>) with interpretation (<b>b</b>).</p>
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<p>Thickness of the panel of the Annunciation medallion, ultrasonics result from four locations (<b>a</b>) and GPR result covering the whole surface (<b>b</b>) © 2023, ProLitteris, Zurich.</p>
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<p>Half-cell measurements on the medallion of the Annunciation (<b>a</b>) and results (<b>b</b>), voltages &gt; 50 mV = orange, voltages &gt; 100 mV = red, © 2023, ProLitteris, Zurich.</p>
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<p>Photograph of a panel of the window from Fribourg (<b>a</b>) with area marked on thermography image (<b>b</b>); the horizontal extension of the area is about 1.2 m.</p>
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<p>GPR reflection amplitudes (strong = white, medium = orange, weak = green) from the upper part of Feeding the multitude, Courfaivre (<b>a</b>) and rebar positions found with magnet (<b>b</b>), © 2023, ProLitteris, Zurich.</p>
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20 pages, 9434 KiB  
Article
Comparative Study of Architectural Bricks from Khorsabad and Susa Sites: Characterization of Black Glazes
by Emmie Beauvoit, Anne Bouquillon, Odile Majérus, Daniel Caurant, Julien Cuny and Ariane Thomas
Heritage 2023, 6(9), 6291-6310; https://doi.org/10.3390/heritage6090329 - 8 Sep 2023
Cited by 2 | Viewed by 1465
Abstract
In this study, the well-preserved glazes of 13 colored bricks representative of the decoration of the palaces of Sargon II (Khorsabad, 8th century BC) and of Darius I (Susa, 6th century BC) were examined. The purpose of this research is to gather information [...] Read more.
In this study, the well-preserved glazes of 13 colored bricks representative of the decoration of the palaces of Sargon II (Khorsabad, 8th century BC) and of Darius I (Susa, 6th century BC) were examined. The purpose of this research is to gather information about the ancient brick manufacturing processes by examining the colored glazes and, in particular, black glazes using a combination of methods that included optical microscopy, SEM-EDX, synchrotron µ-XRD, and µ-Raman spectroscopy. The results revealed different coloring techniques for producing black glazes in the Neo-Assyrian and Persian Achaemenid periods. Regarding the black glazes of Susa, it is particularly interesting to note that their chemical composition varies according to the function of the glazes on the bricks: manganese oxide (for colored fields of glaze) and iron-rich compounds (for raised lines separating glazed areas). In comparison, the black glazes from Khorsabad are characterized by the presence of spherical copper sulfide and galena nanoparticles (ranging from less than 100 nm to about 1 µm) for both the glazed areas and the separating lines. This coloring technique to obtain black glazes is very rarely described in the literature, as well as the mechanism of formation of these spherical nanoparticles. Full article
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<p>Location of the archaeological sites of Khorsabad and Susa (© <a href="http://d-maps.com" target="_blank">d-maps.com</a>, accessed on 23 August 2023).</p>
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<p>Glazed bricks from the palace of Sargon II in Khorsabad (<b>a</b>) and the palace of Darius I in Susa (<b>b</b>) (© C2RMF/A. Maigret). Stars indicate the locations of the glazes that were sampled. The two black glazes sampled, pr30 and pr31 (corresponding to red stars), have the peculiarity of not being close to a yellow glaze.</p>
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<p>Observation of the surface and the section of the different kind of black glazes present in the same archaeological brick (SB21474, (<b>a</b>)) for a black area (<b>b</b>) and a dark contour line (<b>c</b>).</p>
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<p>(<b>a</b>,<b>b</b>) SEM backscattered electron images of the black area (brick SB21474). (<b>c</b>) The EDS elemental mappings of the elements K, S, and Cl correspond exactly to the SEM image (<b>b</b>). Calcium-rich alteration products are visible in the cracks of the glaze.</p>
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<p>Optical microscope photographs of the surface (<b>a</b>) and the cross-section (<b>b</b>) of a Susa black raised line. The framed area in the SEM backscattered electron image (<b>c</b>) corresponds exactly to the same area as the photograph (<b>b</b>). Qz: quartz, Hem: hematite, Aug: augite, and Cf: cobalt ferrite.</p>
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<p>(<b>a</b>) SEM backscattered electron images, (<b>b</b>) optical microscope photograph and µ-Raman spectrum of red particles present inside black separating glazes from Susa. (<b>c</b>) Chemical composition of different parts of a red particle present in the black separating glazes of Susa. Inset illustrated colored particle analyzed and the stars correspond to the EDS spots whose results are reported in (<b>c</b>). Qz = quartz; nd = non-detected.</p>
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<p>(<b>a</b>) SEM backscattered electron images, (<b>b</b>) optical microscope photograph, and µ-Raman spectrum of black particles present inside black separating glazes from Susa. (<b>c</b>) Chemical composition of different parts of a black particle present in the black separating glazes of Susa. Inset illustrated colored particle analyzed, and the stars correspond to the EDS spots whose results are reported in (<b>c</b>). Qz = quartz; nd = non-detected.</p>
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<p>Optical microscope photographs of the surface (<b>a</b>) and the cross-section (<b>b</b>) of a black glaze close to a yellow glaze on a brick found at Khorsabad.</p>
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<p>Microphotographs (<b>a</b>,<b>b</b>) and SEM backscattered electron images (<b>c</b>,<b>d</b>) of nanoparticles present inside isolated black glazes from Khorsabad (N8123, pr30 and pr31). Quartz (Qz) inclusions are visible in the glazes under both optical microscopy (white inclusions for (<b>a</b>) and transparent inclusions for (<b>b</b>) and SEM (<b>c</b>)). The scattering of light by the nanoparticles produces the white color of the volutes (<b>b</b>).</p>
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<p>(<b>a</b>) Bivariate plots of Cu vs. S to compare the composition of different nanoparticles analyzed in the black isolated glazes from Khorsabad (pr30 and pr31, brick N8123). The chemical composition measured by EDS (at%) shows that the Cu and S contents vary proportionally (detailed elemental compositions of the analyzed nanoparticles are included as additional material in <a href="#app1-heritage-06-00329" class="html-app">Table S1</a>). (<b>b</b>) X-ray diffractogram of a representative sample of an isolated black glaze from Khorsabad (pr31, N8123).</p>
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<p>Microphotographs (<b>a</b>,<b>b</b>) and SEM backscattered electron images (<b>c</b>–<b>e</b>) of nanoparticles present inside black glazes located next to yellow glazes from Khorsabad. Here again we can distinguish quartz (Qz) inclusions under both optical microscopy (white inclusions for (<b>a</b>) and transparent inclusions for (<b>b</b>)) and SEM (<b>c</b>). The scattering of light by the nanoparticles produces a white color of the nanoparticles (<b>b</b>). The arrows present in (<b>d</b>) point to regions richer in heavy elements at the edge of the nanoparticles.</p>
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<p>(<b>a</b>) EDS spectra and SEM backscattered electron image of the two areas of a nanoparticle present inside a black glaze from Khorsabad close to a yellow glaze (brick N8099); (<b>b</b>) detailed chemical compositions of each area (A and B) of the nanoparticle, measured by EDS analysis (at% normalized to 100%). The orange spectrum corresponds to region A and the purple spectrum corresponds to region B.</p>
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23 pages, 33930 KiB  
Article
Studies and Considerations on Forty-Three Gold and Silver Nose Ornaments from the Moche Tomb of the Lady of Cao
by Giovanni E. Gigante, Roberto Cesareo, Angel Bustamante, Arabel Fernandez, Régulo Franco, Soraia Azeredo and Ricardo T. Lopes
Heritage 2023, 6(9), 6268-6290; https://doi.org/10.3390/heritage6090328 - 7 Sep 2023
Viewed by 1261
Abstract
The authors studied forty-three beautiful nose ornaments from the Moche tomb of the Lady of Cao, located in the north of Peru, which has been dated to be around 300–400 d.C. Of these items, thirty-nine are composed of a sheet of gold alloy [...] Read more.
The authors studied forty-three beautiful nose ornaments from the Moche tomb of the Lady of Cao, located in the north of Peru, which has been dated to be around 300–400 d.C. Of these items, thirty-nine are composed of a sheet of gold alloy joined together in various manners to a silver alloy sheet, which provides a strong contrast at their interface. Two nose ornaments are on gold alloy and two on silver alloy. These nose ornaments were studied using the following methods: (i) Energy-dispersive X-ray fluorescence (EDXRF); (ii) Transmission of monoenergetic X-rays (XRT) and (iii) X-ray Radiography (RAD). The conclusion, deduced from all applied methods, was that two sheets of gold and silver alloys were joined together with various methods, including gluing, mechanically joining, soldering, smelting with the aid of heating or using mercury to create an amalgam. It cannot be excluded that a few areas, visibly appearing as silver, were obtained by depletion silvering from the base Au-Cu-Ag alloy. By analyzing a fragment from the silver area of a nose ornament and by studying a few other nose ornaments from the tomb of the Lady of Cao in situ, G. Ingo and co-workers concluded that a unique sheet of three-component alloy (Ag-Cu-Au), whichemployed and transformed the surface of the objects to appear to be gold and silver by depletion gilding and silvering. Full article
(This article belongs to the Section Materials and Heritage)
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<p>Sarcophagus and part of the body of the Lady of Cao (after Ref.). She was 1.48 meters tall, was 25 years old and died of eclampsia. The face of the Lady is covered by bowl 073, which is gilded copper, while the body is resting on 23 ceremonial spear throwers covered with gilded copper.</p>
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<p>Portable EDXRF equipment for EDXRF analysis and for linear scanning, composed of a Si-drift detector (on the right; 123 SDD: 450 μm thickness, 7 mm<sup>2</sup> area and 130 eV energy resolution at 5.9 keV) and an X-ray tube (on the left; 40 kV, 100 μA maximum voltage and current and Ag-anode). Bias supply and MCA are inside the detector and of the X-ray tube, respectively. A typical measurement takes 50 s. The X-ray tube is collimated and irradiates an area of &lt;1 mm<sup>2</sup>.</p>
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<p>Distribution of EDXRF measurements of the 41 golden areas of the 43 nose ornaments from the tomb of the Lady of Cao.</p>
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<p>Typical X-ray spectrum of an Au-Ag-Cu alloy reference sample (70% Au, 25% Ag, 5% Cu) obtained with the equipment shown in <a href="#heritage-06-00328-f002" class="html-fig">Figure 2</a>. The X-ray peaks are, from left: Cu-Kα line (8 keV), Au-Ll (8.5 keV), Cu-Kβ (8.9 keV), Au-Lα (9.7 kev), Au-Lβ (11.5 keV), Au-Lγ (13.4 and 13.8 keV), Ag-Kα (22 keV) and Ag-Kβ (25 keV). The small peaks between Cu-Kα and Cu-Kβ and between Au-Lα and Au-Lβ correspond to Au-Lη (8.5 keV) and Au-Ll (10.3 keV) lines, which have an intensity of 5% and 2.5%, respectively, considering 100 as the intensity of Au-Lα line.</p>
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<p>Distribution of EDXRF measurements of the 41 silver areas of the 43 nose ornaments, from 2 to 112. The large spread of concentration and the high gold concentration are remarkable.</p>
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<p>Images (<b>a</b>–<b>c</b>) show nose ornament 002, while image (<b>d</b>) shows the related radiography along with gray level profile along red line. The two silver hats were possibly glued to the golden body, while the two silver shields were possibly pressed to the body like a button. The last Figure shows, from the left, the level of the silver hat alone (A), the level of the hat superimposed onto the golden body (B).</p>
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<p>Front and rear side of nose ornament 105 (<b>a</b>,<b>b</b>), its radiography and the grey level profile (along red line) of the gold-silver interface (<b>c</b>,<b>d</b>). A clear difference may be observed between the gold and the silver areas. This nose ornament is in bad condition and was undergoing restoration. The fragment studied by Ingo et al. was taken from the face on the top right of Figure (<b>a</b>). The soldering material was an Ag-Cu alloy, as shown by EDXRF-measurement (<b>e</b>).</p>
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<p>Nose ornament 106 (top figures, front and rear) (<b>a</b>,<b>b</b>) and its radiography with grey numbers (<b>c</b>). The radiography clearly shows that the five silver heads have been soldered to the gold semi-circles on both sides. The scan along the red line (grey levels) shows from the right the golden area, the soldering area (B) and the silver area (A) (<b>d</b>).</p>
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<p>Images (<b>a</b>–<b>c</b>) representing the front side of nose ornament 022 and the related radiography (<b>d</b>) with the corresponding grey level profile along the red line shows the clear discontinuity between grey level profile along the red line shows the clear discontinuity between the gold and silver areas.</p>
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<p>Images (<b>a</b>–<b>c</b>) representing the front side of nose ornament 024 and the related radiog-raphy (<b>d</b>) with the corresponding grey level profile along the red line (A-B in <a href="#heritage-06-00328-f007" class="html-fig">Figure 7</a>c). This shows the clear discontinuity between the gold and silver areas.</p>
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<p>Images (<b>a</b>,<b>b</b>) representing the front and back side of nose ornament 030 and the related radiography (<b>c</b>,<b>d</b>) showing the discontinuity between gold and silver areas. It may be that the gold-silver junction has been produced by a Hg amalgam.</p>
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<p>(<b>a</b>) The front and (<b>b</b>) rear sides of nose ornament 018 are perplexing. The gold areas on the rear side are partially blackened. (<b>c</b>) The radiography shows an unclear discontinuity between gold and silver (hair) and (<b>d</b>) the grey level of the red line interval A–E.</p>
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28 pages, 10561 KiB  
Article
A Study of the Accuracy of a 3D Indoor Camera for Industrial Archaeology Applications
by Roman Shults, Eugene Levin, Zhanar Aukazhiyeva, Karel Pavelka, Nataliia Kulichenko, Naiman Kalabaev, Maral Sagyndyk and Nagima Akhmetova
Heritage 2023, 6(9), 6240-6267; https://doi.org/10.3390/heritage6090327 - 6 Sep 2023
Cited by 2 | Viewed by 1625
Abstract
The paper aims to study the geometrical quality and opportunities of the state-of-the-art 3D camera Matterport Pro and examine its potential for industrial archaeology applications. The presented study consisted of two steps. In the first step, the geometrical quality of the camera-generated point [...] Read more.
The paper aims to study the geometrical quality and opportunities of the state-of-the-art 3D camera Matterport Pro and examine its potential for industrial archaeology applications. The presented study consisted of two steps. In the first step, the geometrical quality of the camera-generated point cloud was investigated on the calibration test field. The geometrical quality was checked in two ways: (1) with distance comparison between reference targets and (2) with point cloud comparison. The coordinates of the reference targets were determined using a high-precision total station, while the FARO Scanner generated the reference point cloud. The study established that Matterport Pro has a scale systematic error that must be accounted for in 3D modeling and the inventory of archaeological objects. In the second step, the geometrical quality of the camera was checked for the actual archaeological object. As such an object, the historical copper-shaft Quincy Mine in Michigan State Upper Peninsula was considered. The specific subject of the study was one of the largest hoist engines in the world. The Matterport Pro camera scanned the indoor environment of the hoist engine house. The accuracy of the 3D model of the hoist engine was checked using additional linear measurements on-site. It was found that the accuracy of 1% showed that the camera specification can be improved through calibration. As an output of the second step, the accurately refined 3D model of the hoist engine’s interior was built. That model was embedded into a 3D model of the hoist engine’s house for usage in virtual tours of the Quincy Mine Museum. Finally, a virtual tour was created of the Quincy Mine house with exterior and interior models referenced to the geographical frame. Full article
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<p>Coordinating reference targets using the total station.</p>
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<p>Test field scanning by FARO Scanner.</p>
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<p>Point cloud of the test field with control targets retrieved from FARO Scanner data.</p>
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<p>Test field surveying by the Matterport Pro camera.</p>
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<p>Three-dimensional model of the test field after processing by the Matterport server.</p>
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<p>Horizontal plan of the test field after processing by the Matterport server.</p>
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<p>ICP orientation workflow: (<b>a</b>) two point clouds; (<b>b</b>) discrepancies determination; (<b>c</b>) first transformation; (<b>d</b>) nth transformation iteration.</p>
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<p>The location of the Quincy Mine at the Upper Peninsula Michigan.</p>
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<p>Archive map of the Quincy Mine, 1906; the scope of the study is in a boxed area (the image courtesy Michigan Technological University J. Robert Van Pelt and John and Ruanne Opie Library Archive).</p>
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<p>General view of the Quincy Mine, 1882–1920, with the Hoist Engine house leftward (archive image) [<a href="#B47-heritage-06-00327" class="html-bibr">47</a>].</p>
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<p>Cross-section of the Quincy Mine Hoist Engine house, 1921 (archive image) [<a href="#B47-heritage-06-00327" class="html-bibr">47</a>].</p>
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<p>Current view of the Quincy Mine Hoist Engine house.</p>
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<p>The model of the shaft inside the Quincy Mine Hoist Engine house.</p>
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<p>The Quincy Mine Hoist Engine view.</p>
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<p>Distances deviations: Total station vs. Matterport.</p>
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<p>Distances deviations: Total station vs. FARO Scanner.</p>
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<p>Distances deviations: FARO Scanner vs. Matterport.</p>
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<p>Histogram of deviations: Total station vs. Matterport.</p>
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<p>Histogram of deviations: Total station vs. FARO scanner.</p>
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<p>Histogram of deviations: FARO scanner vs. Matterport.</p>
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<p>Results of the linear approximation.</p>
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<p>Distance deviations after linear trend correction.</p>
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<p>Colored 3D point cloud after C2C comparison; distance units are meters. Color-scale units are meters.</p>
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<p>Colored 3D point cloud after blunder exclusion; distance units are meters. Color-scale units are meters.</p>
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<p>C2C distance deviations after the systematic error correction; distance units are meters. Color-scale units are meters.</p>
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<p>Vector plot of transformation errors in the horizontal plane.</p>
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<p>Vector plot of transformation errors in 3D space.</p>
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<p>Flowchart of outdoor and indoor surveying of the Hoist Engine house.</p>
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<p>Flowchart of outdoor and indoor surveying of the Hoist Engine house.</p>
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<p>Three-dimensional model of the Hoist Engine house.</p>
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<p>One of the Matterport Pro surveying stations inside the Hoist Engine house.</p>
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<p>Panoramic images of the Hoist Engine: (<b>a</b>) from the ground; (<b>b</b>) from the platform.</p>
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<p>The whole data set obtained by Matterport Pro with places of the camera set up.</p>
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<p>The view screenshot from the platform surrounding the hoist engine.</p>
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<p>The ladder height measurement option in the Matterport software menu.</p>
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<p>The measurements of the Hoist Engine concrete foundations in the Matterport software menu.</p>
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<p>The map of the Quincy Mine Hoist Engine house (dimensions are in feet) [<a href="#B47-heritage-06-00327" class="html-bibr">47</a>].</p>
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<p>Distance measurements according to the map of the Quincy Mine Hoist Engine house.</p>
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29 pages, 20838 KiB  
Article
Finding the Lost 16th-Century Monastery of Madre de Deus: A Pedagogical Approach to Virtual Reconstruction Research
by Jesse Rafeiro and Ana Tomé
Heritage 2023, 6(9), 6213-6239; https://doi.org/10.3390/heritage6090326 - 4 Sep 2023
Cited by 1 | Viewed by 1887
Abstract
This article outlines a pedagogical approach to the virtual reconstruction of the 16th-century Monastery of Madre de Deus, Lisbon, Portugal. The monastery was built upon a former palace in 1509 by Queen D. Leonor. After her death, it underwent several modifications until its [...] Read more.
This article outlines a pedagogical approach to the virtual reconstruction of the 16th-century Monastery of Madre de Deus, Lisbon, Portugal. The monastery was built upon a former palace in 1509 by Queen D. Leonor. After her death, it underwent several modifications until its present function as the National Tile Museum. These modifications have obscured its history as one of the most significant religious buildings of the Portuguese Renaissance. To recover this lost history, the research uses a pedagogical approach combining previous scholarship, a laser scanning survey, archaeological survey data, written and graphic historical descriptions, and discussions with historians. The article has two principal aims: firstly, to concretize the results of the eight reconstruction projects produced by students using a Historic Building Information Modeling (HBIM) methodology. Secondly, to present an alternative model of teaching history and digital technologies. Our research suggests that extending virtual reconstruction research into pedagogy can provide highly original interpretations of complex and contradictory architecture. The approach promotes meaningful collaborations between researchers and cultural institutions while immersing young professionals in the digital tools and current philosophies of architectural heritage. Full article
(This article belongs to the Special Issue 3D Virtual Reconstruction and Visualization of Complex Architectures)
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<p>Calendar map of the semester from the first day of class on 27 September 2021 to the launching of the Virtual Exhibition on 1 April 2022.</p>
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<p>Examples of final exhibition materials include an A3 portfolio, poster image, and 3D-printed historic source.</p>
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<p>“Finding the Lost Monastery of Madre de Deus” virtual exhibition accessible online through: <a href="https://ipti.pt/finding-the-lost-monastery-virtual-exhibition/" target="_blank">https://ipti.pt/finding-the-lost-monastery-virtual-exhibition/</a> (accessed on 4 April 2022).</p>
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<p>Map of the laser scanning survey including all 145 scan stations.</p>
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<p>View of the laser scanning survey of the small cloister.</p>
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<p>Modeling the National Tile Museum “As-Found.” (<b>Left</b>): The combined model of all student work. (<b>Right</b>): Point cloud overlayed onto the model of the Small Cloister. Credits: Bianca Cordeiro, Catarina Brás, Daniela Pereira, Joana Silva, Maria Nazário, Miguel Vasco, and Mariana Camilo.</p>
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<p>Reconstruction of the original church—Hypothesis 1. (<b>Left</b>): Three-dimensional rendering of the church’s interior. (<b>Top right</b>): South façade. (<b>Bottom Right</b>): Longitudinal section. Credits: Beatriz Fabião, Laura Guia, Mariana Alves, and Ricardo Aparício.</p>
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<p>Reconstruction of the original church—Hypothesis 2. (<b>Left</b>): Church interior. (<b>Right</b>): Overview of the entire church during a period of rising water from the Tagus River. Credits: Inês Almeida, Beatriz Santana, and Bryan Rodrigues.</p>
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<p>Reconstruction of the original church—Hypothesis 3. (<b>Top left</b>): Digital model. (<b>Top right</b>): Three-dimensional printed model. (<b>Bottom</b>): Reinterpretation of the original paintings used in the virtual reconstruction and modified according to the results of the final model. Credits: Lucas Miranda.</p>
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<p>Reconstruction of the Arab Room. (<b>Left</b>): Interior rendering. (<b>Top right</b>): Three-dimensional reconstruction prior to the 16th-century. (<b>Bottom right</b>): Three-dimensional reconstruction in the 16th-century. Credits: Maria Salvador and Madalena Roque.</p>
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<p>Three-dimensional reconstruction of Nepomuceno’s drawings in the spaces around the small cloister depicting the building before interventions (in yellow) and after (in red). Credits: Sofia Cruz.</p>
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<p>(<b>Top</b>): Section of the virtual reconstruction of the Low Choir. (<b>Bottom</b>): Comparison of the same space in the 16th and today. Credits: Jolanta Krzywdzińska.</p>
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<p>Reconstruction of the Low Choir including the altar membrane, Persian carpet, and choir stalls. Credits: Emeline Gallais.</p>
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<p>Virtual reconstruction and 3D Printing of the 17th-century Church of Madre de Deus. (<b>Top</b>): Three-dimensional model of the entire building’s perimeter. (<b>Bottom</b>): Three-dimensional printing of the 17th-century church. Credits: Bianca Friebel.</p>
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<p>Arrival of the Relics of Saint Auta to the Church of Madre de Deus (Chegada das Relíquias de Santa Auta à Igreja da Madre de Deus), c. 1522. © José Luiz Bernardes Ribeiro/CC BY-SA 3.0. File: St. Auta Altapiece—Arrival of the relics of St. Auta at Madre de Deus Monastery—Lisbon Workshop—ca. 1522—oil on oak.JPG—Wikimedia Commons (Available online: <a href="https://commons.wikimedia.org/wiki/File:St._Auta_Altapiece_-_Arrival_of_the_relics_of_St._Auta_at_Madre_de_Deus_Monastery_-_Lisbon_Workshop_-_ca._1522_-_oil_on_oak.JPG" target="_blank">https://commons.wikimedia.org/wiki/File:St._Auta_Altapiece_-_Arrival_of_the_relics_of_St._Auta_at_Madre_de_Deus_Monastery_-_Lisbon_Workshop_-_ca._1522_-_oil_on_oak.JPG</a>) (accessed 27 August 2023).</p>
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<p><span class="html-italic">Saint Francis Delivering the Statutes of the Order to Saint Claire (S. Francisco Entregando os Estatutos da Ordem a Santa Clara)</span>, 1515. Jorge Afonso, Public domain, via Wikimedia Commons. Available online: <a href="https://commons.wikimedia.org/wiki/File:S._Francisco_entregando_os_Estatutos_da_Ordem_a_Santa_Clara_Jorge_Afonso_MNAA.jpg" target="_blank">https://commons.wikimedia.org/wiki/File:S._Francisco_entregando_os_Estatutos_da_Ordem_a_Santa_Clara_Jorge_Afonso_MNAA.jpg</a> (accessed 27 August 2023).</p>
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<p><span class="html-italic">Tryptic of the Presentation of the Child in the Temple (Tríptico da Apresentação do Menino no Templo),</span> c. 1501–1525. Goswijn van der Weyden, Public domain, via Wikimedia Commons. Available online: <a href="https://commons.wikimedia.org/wiki/File:Goswin_van_der_Weyden_-_Apresenta%C3%A7%C3%A3o_do_Menino_no_Templo,_Santo_Ant%C3%B3nio_e_S%C3%A3o_Francisco.jpg?uselang=pt#Licenciamento" target="_blank">https://commons.wikimedia.org/wiki/File:Goswin_van_der_Weyden_-_Apresenta%C3%A7%C3%A3o_do_Menino_no_Templo,_Santo_Ant%C3%B3nio_e_S%C3%A3o_Francisco.jpg?uselang=pt#Licenciamento</a> (accessed 27 August 2023).</p>
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<p>19th-century floorplan (drawing No° 13) by the architect José Maria Nepomuceno. Library and Historical Archive of the Ministry of Social Equipment.</p>
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<p>19th-century elevation (drawing No° 24) by the architect José Maria Nepomuceno. Library and Historical Archive of the Ministry of Social Equipment.</p>
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24 pages, 26594 KiB  
Article
Unfolding WWII Heritages with Airborne and Ground-Based Laser Scanning
by Kathleen Fei-Ching Sit, Chun-Ho Pun, Wallace W. L. Lai, Dexter Kin-Wang Chung and Chi-Man Kwong
Heritage 2023, 6(9), 6189-6212; https://doi.org/10.3390/heritage6090325 - 4 Sep 2023
Viewed by 2016
Abstract
Considering how difficult it is for a pin in the ocean to be found, painstaking searches among historical documents and eyewitness accounts often end up with more unknowns and questions. We developed a three-tier geo-spatial tech-based approach to discover and unfold the lost [...] Read more.
Considering how difficult it is for a pin in the ocean to be found, painstaking searches among historical documents and eyewitness accounts often end up with more unknowns and questions. We developed a three-tier geo-spatial tech-based approach to discover and unfold the lost WWII heritage features in the countryside of Hong Kong that can be applied in other contexts. It started with an analysis of historical texts, old maps, aerial photos, and military plans in the historical geographic information system (HGIS) Project ‘The Battle of Hong Kong 1941: a Spatial History Project’ by Hong Kong Baptist University to define regions/points of interest. Then, 3D point clouds extracted from the government’s airborne LiDAR were migrated to form a digital terrain model (DTM) for geo-registration in GIS. All point clouds were geo-referenced in HK1980 Grid via accurate positioning using the global navigation satellite system—real-time kinematics (GNSS-RTK). A red relief image map (RRIM) was then used to image the tunnels, trenches, and pillboxes in great detail by calculating the topographical openness. The last tier of the tech work was field work involving ground validation of the findings from the previous two tiers and on-site imaging using terrestrial LiDAR. The ground 3D LiDAR model of the heritage feature was then built and integrated into the DTM. The three-tier tech-based approach developed in this paper is standardised and adopted to streamline the workflow of historical and archaeological studies not only in Hong Kong but also elsewhere. Full article
(This article belongs to the Special Issue Photogrammetry, Remote Sensing and GIS for Built Heritage)
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<p>Gin Drinkers Line map [<a href="#B1-heritage-06-00325" class="html-bibr">1</a>].</p>
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<p>High and low values of positive openness and negative openness.</p>
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<p>Openness calculation of positive (α) and negative (β) along two profiles with a given length (L).</p>
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<p>Graves and holes visualised using the RRIM (3D). (<b>a</b>) Graves. (<b>b</b>) War foxholes.</p>
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<p>Comparison of each method. (<b>a</b>) Positive openness (linear). (<b>b</b>) Negative openness (linear). (<b>c</b>) Sky-view factor (linear). (<b>d</b>) Mesh (linear). (<b>e</b>) Red relief image map (non-linear).</p>
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<p>Details of each method. (<b>a</b>,<b>b</b>) Positive openness. (<b>c</b>,<b>d</b>) Negative openness. (<b>e</b>,<b>f</b>) Sky-view factor. (<b>g</b>,<b>h</b>) Mesh. (<b>i</b>,<b>j</b>) Red relief image map.</p>
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<p>Details of each method. (<b>a</b>,<b>b</b>) Positive openness. (<b>c</b>,<b>d</b>) Negative openness. (<b>e</b>,<b>f</b>) Sky-view factor. (<b>g</b>,<b>h</b>) Mesh. (<b>i</b>,<b>j</b>) Red relief image map.</p>
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<p>The 93 pillboxes along the Gin Drinkers Line on RRIM (2D).</p>
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<p>Locations of pillboxes on RRIM (2D). (<b>a</b>) PB315. (<b>b</b>) PB106. (<b>c</b>) PB126.</p>
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<p>Image analysis of PB315. (<b>a</b>) 1939 Japanese military maps. (<b>b</b>) 1941 Japanese military map. (<b>c</b>) PB315 aerial photo in 1964 at 2700 ft (No. 5153). (<b>d</b>) Google Earth of PB315 in 2017. (<b>e</b>) 300 m searching radius from PB315 on RRIM. (<b>f</b>) The 3D terrestrial laser scan.</p>
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<p>Site photos of PB315. (<b>a</b>) Interior of PB315. (<b>b</b>) Mushroom-shaped air vent of PB315.</p>
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<p>Image analysis of PB106. (<b>a</b>) 1939 Japanese map near PB106 with legend. (<b>b</b>) PB106 aerial photo in 1963 at 3900 ft (No. 9741). (<b>c</b>) Google Earth of PB106 in 2021. (<b>d</b>) PB106 aerial photo in 2016 at 6000 ft (no. CS62946). (<b>e</b>) 300m Searching Radius from PB106 on RRIM. (<b>f</b>) RRIM with 2020 Li-DAR. (<b>g</b>) Coordinates of Feature near PB106. (<b>h</b>) 3D terrestrial laser scanning model of the ‘Y’-shaped Trench near PB106.</p>
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<p>Image analysis of PB106. (<b>a</b>) 1939 Japanese map near PB106 with legend. (<b>b</b>) PB106 aerial photo in 1963 at 3900 ft (No. 9741). (<b>c</b>) Google Earth of PB106 in 2021. (<b>d</b>) PB106 aerial photo in 2016 at 6000 ft (no. CS62946). (<b>e</b>) 300m Searching Radius from PB106 on RRIM. (<b>f</b>) RRIM with 2020 Li-DAR. (<b>g</b>) Coordinates of Feature near PB106. (<b>h</b>) 3D terrestrial laser scanning model of the ‘Y’-shaped Trench near PB106.</p>
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<p>Site photos of the Y-shaped trench near PB 106. (<b>a</b>) Y-shaped trench near PB 106 before vegetation clearing. (<b>b</b>) Y-shaped trench near PB 106 after vegetation clearing.</p>
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<p>Image analysis of PB126. (<b>a</b>) 1939 Japanese military maps. (<b>b</b>) 1941 Japanese military map. (<b>c</b>) PB126 aerial photo in 1963 at 3900 ft (no. 9648). (<b>d</b>) PB126 aerial photo in 2021 at 6900 ft (no. E139265C). (<b>e</b>) Google Earth of PB126 in 2017. (<b>f</b>) The 300 m searching radius from PB126 on RRIM. (<b>g</b>) War holes of PB126 on RRIM (3D). (<b>h</b>) The 3D terrestrial laser scanning model of tunnel and cave near PB126.</p>
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<p>Image analysis of PB126. (<b>a</b>) 1939 Japanese military maps. (<b>b</b>) 1941 Japanese military map. (<b>c</b>) PB126 aerial photo in 1963 at 3900 ft (no. 9648). (<b>d</b>) PB126 aerial photo in 2021 at 6900 ft (no. E139265C). (<b>e</b>) Google Earth of PB126 in 2017. (<b>f</b>) The 300 m searching radius from PB126 on RRIM. (<b>g</b>) War holes of PB126 on RRIM (3D). (<b>h</b>) The 3D terrestrial laser scanning model of tunnel and cave near PB126.</p>
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<p>Site photos of the tunnel and cave near PB126. (<b>a</b>) An overview of the tunnel and cave near PB126. (<b>b</b>) Tunnel near PB126. (<b>c</b>) Cave near PB126.</p>
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<p>The point cloud deliverables of four features on RRIM. (<b>a</b>) PB315 above the surface on RRIM (3D). (<b>b</b>) PB315 below the surface on RRIM (3D). (<b>c</b>) The Y-shaped trench near PB106 on RRIM (3D). (<b>d</b>) Tunnel and cave near PB126 above the surface on RRIM (3D). (<b>e</b>) Tunnel and cave near PB126 below the surface on RRIM (3D).</p>
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17 pages, 1087 KiB  
Article
Understanding the Significance of Cultural Heritage in Society from Preschool: An Educational Practice with Student Teachers
by Yamilé Pérez-Guilarte, Inês Gusman and Rubén Camilo Lois González
Heritage 2023, 6(9), 6172-6188; https://doi.org/10.3390/heritage6090324 - 1 Sep 2023
Cited by 2 | Viewed by 4546
Abstract
To understand the significance that cultural heritage has today and, above all, the role of citizens in decision-making for its valorisation, transmission, and management, it is necessary to approach it from a very early age, specifically through childhood education. Hence, this action research [...] Read more.
To understand the significance that cultural heritage has today and, above all, the role of citizens in decision-making for its valorisation, transmission, and management, it is necessary to approach it from a very early age, specifically through childhood education. Hence, this action research study is proposed for 56 infant teachers in initial training at the University of A Coruña (Galicia, Spain). This is a descriptive case study that aims to investigate the perceptions of early childhood education teachers in initial training about cultural heritage (definition: economic, cultural, and educational uses; agents involved in its transmission, management, etc.). In addition, the paper analyses the changes and continuities that occur in student teachers’ perceptions after carrying out a didactic proposal through relevant social problems linked to the Ribeira Sacra cultural landscape. This action research study has allowed students to give more importance to intangible cultural heritage and to gain a better understanding of controversial issues related to cultural heritage, such as the balance between economic and cultural use, as well as citizens’ roles in a decision-making process related to cultural heritage. Despite engaging in didactic activities, a substantial portion of students still retain a conservative outlook on heritage education. Full article
(This article belongs to the Section Cultural Heritage)
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<p><span class="html-italic">Ribeira Sacra</span> landscapes. Source: Yamilé Pérez-Guilarte (October 2021).</p>
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<p>Results of the recognition of cultural heritage through images.</p>
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<p>Aspects related to the conservation and management of cultural heritage.</p>
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19 pages, 13040 KiB  
Article
Risk Assessment and Vulnerability Analysis of a Coastal Concrete Heritage Structure
by Teresa Cunha Ferreira, Xavier Romão, Pedro Murilo Freitas and Hugo Mendonça
Heritage 2023, 6(9), 6153-6171; https://doi.org/10.3390/heritage6090323 - 30 Aug 2023
Cited by 1 | Viewed by 1677
Abstract
This research focuses on the risk management of reinforced concrete heritage constructions in coastal environments, with an emphasis on preserving their cultural significance. It addresses a critical gap in existing risk-related research, since this type of heritage site is often overlooked in heritage [...] Read more.
This research focuses on the risk management of reinforced concrete heritage constructions in coastal environments, with an emphasis on preserving their cultural significance. It addresses a critical gap in existing risk-related research, since this type of heritage site is often overlooked in heritage conservation research. The proposed methodology offers a flexible framework that links natural and human-induced hazards with their impacts on key heritage values, enabling the development of appropriate mitigation and adaptation strategies and policies. Climate change-induced threats are also incorporated, allowing for more effective adaptation plans to safeguard concrete coastal heritage for future generations. The Ocean Swimming Pool in Matosinhos, Portugal, designed by the Pritzker Prize winner Álvaro Siza, serves as a pilot study to illustrate the practicality of the risk-based approach, considering its coastal location and exposure to various hazards. By using this case study, the research provides a roadmap for preserving and adapting heritage constructions in similar coastal settings. The integration of cultural values into risk management and conservation policies is a significant contribution of this research. It advocates for a proactive approach that considers the dynamic challenges posed by climate change while preserving the significance of cultural heritage. The adaptable nature of the proposed methodology allows for broader applications, potentially benefiting multiple heritage sites in coastal regions. Ultimately, this research calls for positive changes in risk management practices to ensure the preservation and longevity of culturally significant reinforced concrete heritage sites. Full article
(This article belongs to the Special Issue Protection of Cultural Heritage from Natural and Manmade Hazards)
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<p>Ocean Swimming Pool, Matosinhos, Portugal. Photo: Pixel, 2021.</p>
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<p>Risk assessment methodology based on cultural significance.</p>
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<p>(<b>a</b>) Leça da Palmeira coastline extreme flooding scenario for 2050 after GMSL rise; (<b>b</b>) Leça da Palmeira coastline extreme flooding scenario for 2100 after GMSL rise (adapted from [<a href="#B42-heritage-06-00323" class="html-bibr">42</a>]). A scale of blue hues, from dark to light, represents the five levels of confidence of the Flood Hazard Index: 1—Very low; 2—Low; 3—Medium; 4—High; 5—Extreme; separated by 20% flood probability intervals.</p>
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<p>(<b>a</b>) Leça da Palmeira coastline tide submersion scenario for 2050 after GMSL rise; (<b>b</b>) Leça da Palmeira coastline tide submersion scenario for 2100 after GMSL rise (adapted from [<a href="#B42-heritage-06-00323" class="html-bibr">42</a>]). A scale of blue hues, from dark to light, represents the percentage of submersion hours and its absolute values during the year: 10% or 876 h; 5% or 438 h; 2.5% or 219 h; 1% or 88 h; 0.1% or 9 h.</p>
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<p>Graphic representation (in red) of a +1.00 m sea level rise (adapted from [<a href="#B48-heritage-06-00323" class="html-bibr">48</a>]).</p>
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<p>Graphic representation of flooding and coastal erosion occurrences between 2014 and 2019. Photo: Civil Protection Department of the Municipal Council of Matosinhos, 2017–2019.</p>
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<p>Wave overtopping during a storm surge. Photo: Civil Protection Department of the Municipal Council of Matosinhos, 2018.</p>
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21 pages, 6400 KiB  
Article
Integrating Cultural Sites into the Sesia Val Grande UNESCO Global Geopark (North-West Italy): Methodologies for Monitoring and Enhancing Cultural Heritage
by Michele Guerini, Rasool Bux Khoso, Arianna Negri, Alizia Mantovani and Elena Storta
Heritage 2023, 6(9), 6132-6152; https://doi.org/10.3390/heritage6090322 - 27 Aug 2023
Cited by 3 | Viewed by 1407
Abstract
UNESCO Global Geoparks are recognised in the scientific community for their exceptional geological significance, but their potential to embrace and preserve cultural heritage sites is underestimated. This study delves into a pioneering approach within the Sesia Val Grande UNESCO Global Geopark (NW Italy), [...] Read more.
UNESCO Global Geoparks are recognised in the scientific community for their exceptional geological significance, but their potential to embrace and preserve cultural heritage sites is underestimated. This study delves into a pioneering approach within the Sesia Val Grande UNESCO Global Geopark (NW Italy), examining the integration of culturally significant sites into conservation and promotion strategies. To achieve a successful integration, we adapted a methodology used for the identification and assessment of geosites, incorporating the criteria of cultural significance, to assess the value of 10 cultural sites within the geopark and compare the results with the assessment values of 10 geosites. Moreover, we submitted survey questionnaires to geopark tourists to understand their interest in visiting both geosites and cultural sites. The findings reveal the remarkable scientific, educational, and touristic values of these cultural sites, which constitute an important resource for the geopark, to be enhanced and protected together with the geosites. Interestingly, the higher scientific value of cultural sites corresponds to increased visitor interest, which is in contrast to the trend observed for geosites. Through this unified approach, the monitoring of cultural heritage within the geopark is simplified and improved, enabling a comprehensive inventory and efficient administration. Moreover, by aligning visitor interests with scientific value, the Sesia Val Grande Geopark can enhance conservation and sustainable tourism efforts. Full article
(This article belongs to the Special Issue Non-invasive Technologies Applied in Cultural Heritage)
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<p>Details of the geographical location of the Sesia Val Grande UNESCO Global Geopark within the Piemonte Region. In grey, the Piemonte Region’s administrative borders are represented. In green, the Sesia Val Grande UNESCO Global Geopark area is indicated. Inside the borders of the geopark, the areas belonging to the Natura 2000 network are indicated with different colours.</p>
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<p>The 10 geosites that are considered in this paper: (<b>a</b>) Balmuccia Peridotite along the Sesia River (photo by Ilaria Selvaggio); (<b>b</b>) view of Cimalegna plateau (photo by Marco Giardino); (<b>c</b>) Albo church (photo from Francoerbi Wikimedia Commons); (<b>d</b>) the marbles from Candoglia quarry (photo by Giorgio Pallavicini); (<b>e</b>) view of Mount Rosa glaciers; (<b>f</b>) kinzigitic rocks near the Varallo Sacred Mountain; (<b>g</b>) Kreas gold mines of Mount Rosa; (<b>h</b>) Otro Valley (photo from BelPatty86 Wikimedia Commons); (<b>i</b>) outcrop of mylonite in Val Pogallo (photo by Lorenzo Rasini); and (<b>j</b>) example of soapstone (photo by Gian Mario Navillod).</p>
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<p>The 10 cultural sites that are considered in this paper: (<b>a</b>) church of the Ghiffa sacred mountain (photo by Raffaele Pagani); (<b>b</b>) view of Varallo Sacred Mountain; (<b>c</b>) mountaineers climbing to Capanna Margherita Hut (photo by Carlo Zanetta); (<b>d</b>) Walser villages near Alagna Valsesia (photo from BelPatty86 Wikimedia Commons); (<b>e</b>) view of Vogogna Castle (photo by Rmenzaghi); (<b>f</b>) botanical gardens of Villa Taranto; (<b>g</b>) Mount Fenera Ciota Ciara cave (photo by Claudio Berto); (<b>h</b>) Candoglia quarry (photo by Giulia Varetti); (<b>i</b>) Villa Caccia in Romagnano Sesia; (<b>j</b>) Val Grande petroglyphs from which the logo of the park is inspired (photo by Carlo Zanetta).</p>
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<p>Map of the geographical locations of the geosites and cultural sites within the Sesia Val Grande UNESCO Global Geopark. Blue dots represent the geosites. Red dots represent the cultural sites. Purple dots indicate the sites in which it is possible to consider both geosites and cultural sites. The dimension of the spot in the table indicates the scientific value assessed for each site.</p>
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<p>Average scores for the selected geosites. SV: scientific value; EV: potential educational use; TV: potential touristic use; DR: degradation risk. The description of the geosites is reported in <a href="#heritage-06-00322-t001" class="html-table">Table 1</a>. An extensive table containing information on geosites is reported in <a href="#app1-heritage-06-00322" class="html-app">Supplementary Material</a> (<a href="#app1-heritage-06-00322" class="html-app">Table S1</a>).</p>
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<p>Average scores for the selected cultural sites. SV: scientific value; EV: potential educational use; TV: potential touristic use; DR: degradation risk. An extensive table containing information on cultural sites is reported in <a href="#app1-heritage-06-00322" class="html-app">Supplementary Material</a> (<a href="#app1-heritage-06-00322" class="html-app">Table S1</a>).</p>
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<p>Participants’ level of interest in geopark geosites. In green are the values from 1 to 5, where 1 means “I do know it, but I am slightly interested in visit the geosite”, and 5 means “I am strongly interested in visiting the geosite”. In red is the 0 value that corresponds to “I do not know the geosite and I am not interested in visiting it”.</p>
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<p>Participants’ level of interest in geopark cultural sites. In green are the values from 1 to 5, where 1 means “I do know it, but I am slightly interested in visit the site” and 5 means “I am very interested in visiting the site”. In red is the 0 value that corresponds to “I do not know the site and I am not interested in visiting it”.</p>
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<p>(<b>a</b>) Expert evaluation on the scientific value of geosites correlated with the average values of the touristic interest in geosites. (<b>b</b>) Expert evaluation on the scientific value of cultural sites correlated with the average values of the touristic interest in cultural sites. In both figures, the <span class="html-italic">x</span>-axis indicates the values of the scientific assessment, and the <span class="html-italic">y</span>-axis indicates the values of the touristic interest. According to the questionnaire (<a href="#app1-heritage-06-00322" class="html-app">Table S2</a>), the touristic interest ranges from 0 (I do not know it and I am not interested in visiting it) to 5 (I am strongly interested in visiting it).</p>
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<p>Participant preferences on the importance of protecting and promoting of geosites vs. cultural sites. Negative values indicate the protection or promotion of the geosites. Positive values indicate the promotion and protection of cultural sites. A value of 0 indicates the equal importance in protecting and promoting geosites and cultural sites.</p>
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20 pages, 4794 KiB  
Article
A Methodology to Regulate Transformation of a City’s Appearance Due to Energy Efficiency Building Renovations: A Case Study: Errenteria (Spain)
by Iñigo Lizundia, Eneko Jokin Uranga and Leire Azcona
Heritage 2023, 6(9), 6112-6131; https://doi.org/10.3390/heritage6090321 - 26 Aug 2023
Cited by 2 | Viewed by 1036
Abstract
The need to improve the energy performance of European buildings is beyond all doubt, as indicated by the different regulatory determinations on energy and climate change adopted by different public administrations in recent years. The primary actions have focused on improving the thermal [...] Read more.
The need to improve the energy performance of European buildings is beyond all doubt, as indicated by the different regulatory determinations on energy and climate change adopted by different public administrations in recent years. The primary actions have focused on improving the thermal enclosure of buildings; the placement of new energy-efficient skins on their exterior façades is consequently beginning to deconfigure, distort, homogenize and globalize the city in an alarming manner. In the case of Spain, the lack of a specific regulation on how to proceed when renovating the vast majority of residential buildings without heritage protection is leaving the ultimate decision in the hands of owner associations. It is therefore urgent to endow municipal administrations with a tool enabling them to regulate and control the transformation of a city’s image before it is too late. To that end, a pioneer methodology is proposed to classify the unprotected building stock of a municipality with a view to future renovation actions, depending on the degree of their vulnerability and the greater or lesser need to protect their image and the other pre-existing features. As a theoretical case study to test the proposed methodology, the locality of Errenteria, Spain, was chosen, demonstrating that it is an effective tool easy to apply in any city nationwide, regardless of the respective location, size and management capacity. Full article
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<p>The framework of the research method.</p>
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<p>(<b>a</b>) Galtzaraborda, 1964 [<a href="#B53-heritage-06-00321" class="html-bibr">53</a>]; (<b>b</b>) Galtzaraborda, 2023 (author’s archive).</p>
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<p>(<b>a</b>) Agustinas, 1973 [<a href="#B48-heritage-06-00321" class="html-bibr">48</a>]; (<b>b</b>) Agustinas, posterior facade, 2023 (author’s archive); (<b>c</b>) Agustinas, main facade, 2023 (author’s archive).</p>
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<p>(<b>a</b>) Olibet, 1974 [<a href="#B48-heritage-06-00321" class="html-bibr">48</a>]; (<b>b</b>) Olibet, 2023 (author’s archive).</p>
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15 pages, 5527 KiB  
Article
Understanding Frédéric Flachéron’s Paper Negative Process through Experimentation and Specular Reflection FTIR Analysis
by Elena Bulat, Laura Panadero, Erin L. Murphy and Arthur A. McClelland
Heritage 2023, 6(9), 6097-6111; https://doi.org/10.3390/heritage6090320 - 26 Aug 2023
Viewed by 1351
Abstract
Cultural heritage objects present a special set of challenges for chemical analysis. Often micro-sampling or even contacting the object is deemed an unacceptable risk to the object. This study examined if specular reflection FTIR, a non-sampling and non-contact analytical technique, can provide insight [...] Read more.
Cultural heritage objects present a special set of challenges for chemical analysis. Often micro-sampling or even contacting the object is deemed an unacceptable risk to the object. This study examined if specular reflection FTIR, a non-sampling and non-contact analytical technique, can provide insight into chemical composition of the layered coatings on Frédéric Flachéron’s paper negatives (1848–1852) in the Harrison D. Horblit Collection of Early Photography, in Houghton Library, at Harvard University. Specular reflection FTIR data confirmed the identification of beeswax and sandarac as the transparentizing media on Flachéron’s paper negatives, as previously published by Lee Ann Daffner. However, specular reflection FTIR analysis also indicated that some negatives had additional localized coatings of orange shellac in specific areas of the images. To understand why Flachéron retouched his negatives with orange shellac, modern experimental replications of the paper negative process were performed. Through modern experimentation with the paper negative technique, it was found that Flachéron’s coatings of shellac served as an integral part of his image-altering technique. The color of the orange shellac subtly alters contrast and density, but it does not mask an area the way an opaque watercolor or highly pigmented paint might. The fine adjustments to the negatives with orange shellac were an attempt to perfect the contrast in the print, and better render depth and detail. These discoveries add to a growing body of recent research that points to the historic and art historic importance of negatives and coatings in photography. The specificity with which specular reflection FTIR was able to nondestructively identify the chemical composition of the local coating, and specifically target the analysis on the areas in which it appeared, allowed for an understanding of Flachéron’s use of local coatings as a retouching method rather than a protective coating. Full article
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<p>This image is representative of the relative glossiness of locally coated areas, as well as the tidelines often visible at the edges of the coated areas, which allowed for the easy visual identification of the coating. Frédéric Flachéron, Untitled, 1851, paper negative, Houghton Library Horblit TypPr 815.F396.075 (N) Sz2.</p>
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<p>Front and back of negative 063, showing applications of a glossy coating on both sides. Four negatives were found to have similar coatings, either over the entire image area, or in discrete areas only.</p>
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<p>The negative (left) and modern positive (right) of TypPr 815.F396.059, with areas of orange shellac circled in blue. Frédéric Flachéron, Untitled, paper negative, Houghton Library Horblit TypPr 815.F396.059 (N) Sz2.</p>
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<p>Paper negative undergoing specular reflection FTIR analysis, using the Bruker Lumos I, onsite at the Houghton Library.</p>
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<p>Specular reflection FTIR spectra of the Flachéron paper negative, which showed a match between the historic object and mathematically mixed beeswax and sandarac coatings on salted paper prints.</p>
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<p>Specular reflectance FTIR spectra of sandarac and beeswax modern reference samples, compared with the Flachéron paper negative, TypPr 815.F396.077N SZ2, on an area with no localized coatings. Note the similarities concerning the spectral shape of the sandarac and beeswax reference sample, and the Flachéron’s paper negative; for instance, in the CH stretching region, 2800–3000 cm<sup>−1</sup>, and in the fingerprint range between 1000 and 1500 cm<sup>−1</sup>.</p>
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<p>The comparison of sandarac and shellac reflectance FTIR spectra demonstrate that they are easily distinguishable from one another with specular reflection FTIR data, despite both belonging to the larger common category of resins.</p>
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<p>Samples of blonde shellac (left) from Kremer and orange shellac (right) from Talas, which were purchased for this research. They were identified by the manufacturers as “shellac, very light” and “Shellac #1 Lemon,” respectively.</p>
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<p>The bleaching process chemically changes the shellac, such that the blonde shellac and orange shellac have distinct reflection FTIR spectra.</p>
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<p>Spectra from Method 2 (sandarac over wax) and Method 3 (wax over sandarac) were compared with Flachéron’s negatives in areas with no local coatings. The library search algorithm strongly suggested that Method 2 was a better spectral match for the historic negatives.</p>
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<p>Specular reflection FTIR spectra of a modern reference sample compared with shellac, sandarac, and beeswax, in addition to the TypPr 815.F396.059 N Sz2 Flachéron negative area with a localized coating.</p>
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<p>Left—Facsimile paper negative; Right—Corresponding positive salted paper print showing the effects of orange shellac on the negative. The red box highlights the border of the area that was coated with orange shellac on the negative and the corresponding area on the positive print.</p>
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<p>Left—Facsimile paper negative. Right—Corresponding positive print showing light-blocking effects of orange shellac on the negative. The red arrows indicate areas where shellac gathered at the edge of the brushstroke on the negative.</p>
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31 pages, 7717 KiB  
Article
Technological Tools for the Conservation and Dissemination of Valencian Design Archives
by Ester Alba, Mar Gaitán, Arabella León, Javier Sevilla, Álvaro Solbes and Vicente Pla
Heritage 2023, 6(9), 6066-6096; https://doi.org/10.3390/heritage6090319 - 26 Aug 2023
Viewed by 1641
Abstract
Design has shaped the world in which we live; it has improved our lives in ways we cannot even begin to imagine. Even if design is everywhere and is the memory of the world, collections associated with it are not usually well-known as [...] Read more.
Design has shaped the world in which we live; it has improved our lives in ways we cannot even begin to imagine. Even if design is everywhere and is the memory of the world, collections associated with it are not usually well-known as design archives which capture spatial and temporal narratives. Saving these types of archives and making them accessible to the public, using them as cultural hubs, might improve our lives thanks to visual literacy, creativity, and innovation. The Arxiu Valencià del Disseny aims to recover, preserve, protect, and disseminate the archival cultural heritage of the Valencian designers. With a collection of more than 150,000 objects, it recovers history and evolution from the applied arts and product design, but with a markedly future-oriented character through the enhancement of the collections and their dissemination thanks to an intelligent computational system featuring cutting-edge technologies in order to prove our understanding of Valencian and European design. The aim of this paper is twofold: first, we introduce the AVD project, an interdisciplinary project that has been recently funded by the Valencian Government in order to preserve and promote the heritage of design archives; second, we introduce a set of interactive tools related to the project, such as the digitisation and cataloguing of the collection, the generation of a Design Memory Archive, advanced searching, and semantically relating the digitised collection of the Arxiu Valencià del Disseny based on data interoperability across its collections and a benchmarking tool for designers. Full article
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<p>Several examples of the variety of documentation in AVD.</p>
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<p>Collection College of Interior Designers. Designer Casto Buigues (1955–1971): Project for a Bank Office. Project for the warehouses of “Lanas Aragón” (Valencia) (1968). Designer José Mar-tínez Peris: Stand Project for Ceramic Company S.S.A.V. S.A. AVD.</p>
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<p>Espai Corbat Collection: Salvador Albacar Catalog (1911). Valencian Curvadora Col-lection. Gasisa Collection: Drop-down catalog of García Simón, S. A. (1962). AVD.</p>
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<p>Collection Hijos de Mariano Garcia. Interior design projects (since 1920). AVD.</p>
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<p>Collection Hijos de Mariano Garcia. Interior design projects (since 1920). AVD.</p>
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<p>Collection of designer Paco Bascuñan (graphic design, brand, typography, and edito-rial design). Xavier Bordils Collection (industrial design and global design). Designer Vicent Mar-tínez (graphic design, furniture, and product design). AVD.</p>
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<p>Web with AVD’s traditional cataloguing system.</p>
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<p>Memory Design. Recovery of the memory of women in design culture Interviews with Silvia García, businesswoman and artistic director of La Mediterranánea, and Lola Castelló, product designer and furniture designer for the company Punt Mobles.</p>
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<p>Screenshots of the AVD Product Map prototype, which displays the product dataset in 2D (<b>left</b>) and 3D (<b>right</b>), depending on the values of the user-defined variables.</p>
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<p>Screenshots of the spatiotemporal map used in the SILKNOW project (adapted from [<a href="#B87-heritage-06-00319" class="html-bibr">87</a>]. On the left represent the two ways of visualising the relationships between the objects, and on the right, the temporal variation of the spatial distribution of the objects.</p>
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<p>(<b>a</b>) Screenshot of the main menu as seen in a user’s browser; (<b>b</b>) Screenshot of the search menu as seen in the user’s browser; (<b>c</b>) Screenshot of the space-time map mock. Screen “map” of the mock tool; (<b>d</b>) Screenshot of the relational map mock.</p>
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<p>(<b>a</b>) Screenshot of the main menu as seen in a user’s browser; (<b>b</b>) Screenshot of the search menu as seen in the user’s browser; (<b>c</b>) Screenshot of the space-time map mock. Screen “map” of the mock tool; (<b>d</b>) Screenshot of the relational map mock.</p>
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31 pages, 10499 KiB  
Article
Re-Thinking Visitor Experience with Ancient Manuscripts via the Holographic Showcase: The Case of the Codex4D Project and Its First Public Results from a Mixed-Method Evaluation In Situ
by Patrizia Schettino, Eva Pietroni and Enzo d’Annibale
Heritage 2023, 6(9), 6035-6065; https://doi.org/10.3390/heritage6090318 - 25 Aug 2023
Cited by 3 | Viewed by 1574
Abstract
Ancient manuscripts are precious and fragile objects, preserved in libraries, museums, and archives. Some of them are masterpieces, made with several materials and insights, but generally they are not accessible to wide communities of users. The purpose of this study is to present [...] Read more.
Ancient manuscripts are precious and fragile objects, preserved in libraries, museums, and archives. Some of them are masterpieces, made with several materials and insights, but generally they are not accessible to wide communities of users. The purpose of this study is to present the preliminary results of the Codex4D project: a holographic showcase, conceived for museums, presenting the first 4D model of an ancient manuscript to the public at the Science Festival in Genoa in 2022. The manuscript, preserved in the Angelica Library in Rome, has been represented in a multidimensional digital model, documenting both its visible and invisible aspects, on the surface and in the stratigraphic layers. We analysed the visitor experience: informal learning, the meaning-making process, interactions between visitors, and gesture-based interaction with the showcase. The methodology used for evaluation is based on four different qualitative methods (grounded theory, narrative inquiry, case study, and digital ethnography). We collected notes from observation, narratives from interviews, and answers from structured interviews. The main findings are patterns of the visitors’ experiences with a digital interactive 4D model of an ancient manuscript, supported by storytelling, and a list of design issues and possible improvements for the next version of the Codex4D holographic showcase. Full article
(This article belongs to the Section Museum and Heritage)
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<p>Codex4D holographic showcase dedicated to the manuscript “<span class="html-italic">De Balneis Puteolanis</span>”, presented in Genoa.</p>
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<p>Map of the exhibition “The Heritage Science Languages, from Macro to Micro”, at the “Villa del Principe” in Genoa.</p>
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<p>Pepper’s Ghost technique, from the theatre to the holographic showcase.</p>
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<p>The sensory dimension of the object has been recreated in the Codex4D holographic showcase.</p>
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<p>Scenography in the Codex4D holographic showcase.</p>
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<p>Left: instructions for how to interact with the installation; right: totem in front of the holographic showcase.</p>
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<p>The character shot on a green screen and then composed in the scene.</p>
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<p>The storyteller paddling in a basin to abandon the sheet and come closer to the user.</p>
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<p>Example of annotation in the holographic showcase.</p>
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<p>Demographic data from structured interviews: professions. The majority of visitors were high school students and teachers during the weekdays. The variety of professions during the weekend and holidays was higher.</p>
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<p>This is a figure from ethnographic observations: (<b>a</b>) the showcase was used by groups and by single visitors; (<b>b</b>) type of visit: guided visits were offered to schools and families, and for other groups and individual visitors we proposed the exploratory visit (33%), with or without a short introduction.</p>
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<p>The visit as a social event: (<b>a</b>) the majority of visitors interacted with other visitors, 91%; (<b>b</b>) the majority of visitors made comments during the visit, 75%.</p>
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<p>The visit as a social event: (<b>a</b>) the majority of visitors interacted with other visitors, 91%; (<b>b</b>) the majority of visitors made comments during the visit, 75%.</p>
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<p>Learning patterns: (<b>a</b>) the majority of visitors did not use the help; (<b>b</b>) visitors who were guided, visitors learning by themselves, imitating or asking other visitors or guides for help.</p>
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<p>Learning patterns: (<b>a</b>) the majority of visitors did not use the help; (<b>b</b>) visitors who were guided, visitors learning by themselves, imitating or asking other visitors or guides for help.</p>
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<p>Facial expressions: (<b>a</b>) the researcher was able to recognize a facial expression; (<b>b</b>) interpretation of non-verbal communication (facial expression) by the researcher (ethnographic observation). The majority of visitors smiled or were very focused. Note: some visitors changed expressions during the visit, e.g., from very focused to smiling, etc.</p>
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<p>Facial expressions: (<b>a</b>) the researcher was able to recognize a facial expression; (<b>b</b>) interpretation of non-verbal communication (facial expression) by the researcher (ethnographic observation). The majority of visitors smiled or were very focused. Note: some visitors changed expressions during the visit, e.g., from very focused to smiling, etc.</p>
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<p>Engagement: (<b>a</b>) the majority of visitors (62%) would recommend the experience (value from 8 to 10, chosen by 37 participants) to a friend; (<b>b</b>) they would like (89%) to learn more about manuscripts.</p>
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<p>Engagement: (<b>a</b>) the majority of visitors (62%) would recommend the experience (value from 8 to 10, chosen by 37 participants) to a friend; (<b>b</b>) they would like (89%) to learn more about manuscripts.</p>
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<p>Triangulation between the structured interviews and observations: (<b>a</b>) for the majority of visitors, the interaction model, based on hand movements and the sensor recognizing the movements, was easy to use; (<b>b</b>) this was also confirmed by observations, but some visitors had some problems which are described in the notes and summarized in <a href="#heritage-06-00318-t001" class="html-table">Table 1</a>.</p>
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<p>Triangulation between the structured interviews and observations: (<b>a</b>) for the majority of visitors, the interaction model, based on hand movements and the sensor recognizing the movements, was easy to use; (<b>b</b>) this was also confirmed by observations, but some visitors had some problems which are described in the notes and summarized in <a href="#heritage-06-00318-t001" class="html-table">Table 1</a>.</p>
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19 pages, 27647 KiB  
Article
Structured-Light Scanning and Metrological Analysis for Archaeology: Quality Assessment of Artec 3D Solutions for Cuneiform Tablets
by Filippo Diara
Heritage 2023, 6(9), 6016-6034; https://doi.org/10.3390/heritage6090317 - 24 Aug 2023
Cited by 4 | Viewed by 1853
Abstract
This paper deals with a metrological and qualitative evaluation of the Artec 3D structured-light scanners: Micro and Space Spider. As part of a larger European project called ITSERR, these scanners are tested to reconstruct small archaeological artefacts, in particular cuneiform tablets with different [...] Read more.
This paper deals with a metrological and qualitative evaluation of the Artec 3D structured-light scanners: Micro and Space Spider. As part of a larger European project called ITSERR, these scanners are tested to reconstruct small archaeological artefacts, in particular cuneiform tablets with different dimensions. For this reason, Micro and Space Spider are compared in terms of the entire workflow, from preparatory work to post-processing. In this context, three cuneiform replica tablets will serve as examples on which the Artec scanners will have to prove their worth. Metric analyses based on distance maps, RMSe calculations and density analyses will be carried out to understand metrological differences between these tools. The creation of 3D models of cuneiform tablets is the first step in developing a virtual environment suitable for sharing the archaeological collection with collaborators and other users. The inclusion of semantic information through specific ontologies will be the next step in this important project. Full article
(This article belongs to the Special Issue Non-invasive Technologies Applied in Cultural Heritage)
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<p>Schematic operative workflow applied to this research analysis: from preliminary steps to post-processing procedures.</p>
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<p>Schematic representation of structured-light scanning operation: trigonometric triangulation between the object, the camera and the light source. The scanner calculates the triangulation angle α and light deformation on the object.</p>
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<p>The tested structured-light scanners: (<b>A</b>) Artec Micro; (<b>B</b>) Artec Space Spider.</p>
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<p>Cuneiform replica tablet considered for this analysis: (<b>A</b>) lenticular tablet from UPM, diameter 70 mm, max-thickness 27 mm; (<b>B</b>) rectangular tablet from UPM, length 35 mm, width 30 mm, thickness 16 mm; (<b>C</b>) squared tablet, length 25 mm, width 25 mm, thickness 9 mm.</p>
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<p>3D model of the lenticular tablet created with Artec Micro: 3D resolution 0.03 mm.</p>
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<p>3D model of the lenticular tablet created with Artec Space Spider: 3D resolution 0.08 mm.</p>
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<p>Details of 3D models related to the lenticular tablet created with Artec Micro (<b>A</b>) and Space Spider (<b>B</b>). Here can be noticed differences between 3D resolutions: 0.03 mm and 0.08 mm.</p>
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<p>3D model of the rectangular tablet created with Artec Micro: 3D resolution 0.03 mm.</p>
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<p>3D model of the rectangular tablet created with Artec Space Spider: 3D resolution 0.08 mm.</p>
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<p>Details of 3D models related to the rectangular tablet created with Artec Micro (<b>A</b>) and Space Spider (<b>B</b>). Here can be noticed differences between 3D resolutions: 0.03 mm and 0.08 mm.</p>
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<p>3D model of the squared tablet created with Artec Micro: 3D resolution 0.03 mm.</p>
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<p>3D model of the rectangular tablet created with Artec Space Spider: 3D resolution 0.08 mm.</p>
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<p>Details of 3D models related to the squared tablet created with Artec Micro (<b>A</b>) and Space Spider (<b>B</b>). Here can be noticed differences between 3D resolutions: 0.03 mm and 0.08 mm.</p>
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<p>Texture diffuse mapping: Micro models (<b>A</b>–<b>C</b>); Space Spider models (<b>D</b>–<b>F</b>).</p>
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<p>Lenticular tablet. Comparison between two different outputs: (<b>A</b>) Micro model; (<b>B</b>) Spider model; (<b>C</b>) two models aligned and registered (models overlapped, error 0.001 mm).</p>
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<p>Lenticular tablet. Distance Map (mesh to mesh) between Micro and Spider models: maximum distance (error scale) 0.250 mm; absolute distance 0.012 mm; RMSe 0.017 mm.</p>
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<p>Rectangular tablet. Comparison between two different outputs: (<b>A</b>) Micro model; (<b>B</b>) Spider model; (<b>C</b>) two models aligned and registered (models overlapped, error 0.001 mm).</p>
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<p>Rectangular tablet. Distance Map (mesh to mesh) between Micro and Spider models: maximum distance (error scale) 0.200 mm; absolute distance 0.039 mm; RMSe 0.031 mm.</p>
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<p>Rectangular tablet. Comparison between two different outputs: (<b>A</b>) Micro model; (<b>B</b>) Spider model; (<b>C</b>) two models aligned and registered (models overlapped, error 0.001 mm).</p>
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<p>Rectangular tablet. Distance Map (mesh to mesh) between Micro and Spider models: maximum distance (error scale) 0.200 mm; absolute distance 0.023 mm; RMSe 0.022 mm.</p>
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<p>Micrometric details of 3D cuneiform tablet. Zoom and metric evaluation of Micro (brown) and Space Spider (blue) models: lenticular tablet (<b>A</b>,<b>D</b>); Rectangular tablet (<b>B</b>,<b>E</b>); squared tablet (<b>C</b>,<b>F</b>).</p>
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<p>Lenticular replica tablet. Post-processing render and shader filters. Micro model: (<b>A</b>) rendered depth map, (<b>B</b>) dimple shader with custom light direction, (<b>C</b>) shader related to the radiance inverted map. Spider model: (<b>D</b>) rendered depth map, (<b>E</b>) dimple shader with custom light direction, (<b>F</b>) shader related to the radiance inverted map.</p>
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<p>Rectangular replica tablet. Post-processing render and shader filters. Micro model: (<b>A</b>) rendered depth map, (<b>B</b>) dimple shader with custom light direction, (<b>C</b>) shader related to the radiance inverted map. Spider model: (<b>D</b>) rendered depth map, (<b>E</b>) dimple shader with custom light direction, (<b>F</b>) shader related to the radiance inverted map.</p>
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<p>Squared replica tablet. Post-processing render and shader filters. Micro model: (<b>A</b>) rendered depth map, (<b>B</b>) dimple shader with custom light direction, (<b>C</b>) shader related to the radiance inverted map. Spider model: (<b>D</b>) rendered depth map, (<b>E</b>) dimple shader with custom light direction, (<b>F</b>) shader related to the radiance inverted map.</p>
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<p>Schematic analysis on polygons (triangles) count (million) for each cuneiform tablet.</p>
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<p>Graphic schema on density ratio related to polygons per mm<sup>3</sup> for each cuneiform tablet.</p>
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<p>Schematic analysis RMSe related to distance map Micro/Space Spider for each cuneiform tablet.</p>
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19 pages, 2288 KiB  
Article
Tourism Competitiveness in Eastern Africa: RCA and TTCI
by Zsuzsanna Bacsi, Abdi Shukri Yasin and Gabriella Bánhegyi
Heritage 2023, 6(9), 5997-6015; https://doi.org/10.3390/heritage6090316 - 23 Aug 2023
Cited by 2 | Viewed by 5153
Abstract
Eastern Africa is home to strikingly beautiful landscapes, unique wildlife and exotic cultural heritage that create outstanding tourism appeal. Unfortunately, these attractive features do not always translate to high tourism revenues. This paper focuses on analyzing the relationships between tourism performance indicators—arrivals, revenues [...] Read more.
Eastern Africa is home to strikingly beautiful landscapes, unique wildlife and exotic cultural heritage that create outstanding tourism appeal. Unfortunately, these attractive features do not always translate to high tourism revenues. This paper focuses on analyzing the relationships between tourism performance indicators—arrivals, revenues and the revenue-based revealed comparative advantage (RCA)—and compare them to the components of destination facilities and endowments measured by the Tourism and Travel Competitiveness Index (TTCI). The analysis concentrates on Ethiopia, Kenya, Uganda and Tanzania, using secondary data from 2005 to 2017. The methodology applies correlation analysis and panel regression. As the results show, the TTCI and RCA are negatively correlated, but the components of the TTCI have different relationships to the RCA. Natural heritage positively influences the RCA, while cultural resources do not. The higher RCA values are also enhanced by better tourism services and better ground travel infrastructure. Similar analyses have been performed for Europe and some Asian countries, but not for Eastern Africa. The novelty of the present research is the fact that natural heritage resources can contribute considerably to tourism revenues, while cultural resources are not utilized to their full potential in terms of tourism success. Full article
(This article belongs to the Special Issue Sustainable Heritage, Tourism and Communication: Theory and Practice)
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<p>The study area. Source: <a href="https://en.wikivoyage.org/wiki/East_Africa" target="_blank">https://en.wikivoyage.org/wiki/East_Africa</a> (accessed on 17 August 2023).</p>
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<p>The natural and cultural heritage bond. <span class="html-italic">Source: Authors own construction based on</span> [<a href="#B37-heritage-06-00316" class="html-bibr">37</a>].</p>
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<p>Graphical scheme of the methodology. <span class="html-italic">Source: Authors’ own construction</span>.</p>
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<p>Average share of regions in international arrivals, 2001–2020. <span class="html-italic">Source: Authors’ own computation based on data from World Development Indicators, World Bank Databank</span>, <a href="https://databank.worldbank.org/source/world-development-indicators#" target="_blank">https://databank.worldbank.org/source/world-development-indicators#</a>, accessed on 31 July 2023).</p>
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<p>The dynamics of the RCA by country, 2000–2029. <span class="html-italic">Source: authors’ own computation</span>.</p>
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16 pages, 7872 KiB  
Article
Educational Potential of Geoheritage: Textbook Localities from the Zagros and the Greater Caucasus
by Tahereh Habibi, Dmitry A. Ruban and Vladimir A. Ermolaev
Heritage 2023, 6(9), 5981-5996; https://doi.org/10.3390/heritage6090315 - 22 Aug 2023
Viewed by 1102
Abstract
Geoheritage requires proper conservation and has significant importance for geoscience education at universities. Furthermore, its related potential needs to be evaluated. This study focuses on two textbook localities (these are parts of larger geosites) from the Cenozoic orogenic belts, namely the Zagros and [...] Read more.
Geoheritage requires proper conservation and has significant importance for geoscience education at universities. Furthermore, its related potential needs to be evaluated. This study focuses on two textbook localities (these are parts of larger geosites) from the Cenozoic orogenic belts, namely the Zagros and the Greater Caucasus. The novel, tentatively proposed approach aims at general geological characteristics of the localities, identification of the principal teaching topics and teaching opportunities, and semi-quantitative evaluation of the educational potential on the basis of several objective criteria. The Abmorghan anticline (Zagros, Iran) is suitable for learning about the regional Paleogene stratigraphy, carbonate platform evolution, and karst. The locality of the Skala monocline (Greater Caucasus, Russia) allows the deposition in past tropical conditions and monocline structures to be explained. Both localities can be used for training student skills and challenging their geological thinking. The semi-quantitative evaluation shows that the geoeducational potential of the Abmorghan anticline is advanced and that of the Skala monocline is moderate. The established potential can be exploited by universities, although this requires focusing attention on the other geoheritage sites and special marketing efforts. Full article
(This article belongs to the Section Geoheritage and Geo-Conservation)
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<p>General location of the considered geological domains (outlined by green lines). Abbreviations: ZA—Zagros, GC—Greater Caucasus, A—Abmorghan anticline, S—Skala monocline.</p>
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<p>Geological setting of the Abmorghan anticline. The geological map is adapted from Andadlibi [<a href="#B52-heritage-06-00315" class="html-bibr">52</a>]. <a href="#heritage-06-00315-f001" class="html-fig">Figure 1</a> and the geographical coordinates indicate the location of this plot.</p>
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<p>Geological setting of the Skala monocline. <a href="#heritage-06-00315-f001" class="html-fig">Figure 1</a> and the geographical coordinates indicate the location of this plot.</p>
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<p>Panoramic and close-up views of the Abmorghan anticline: (<b>a</b>,<b>b</b>)—contacts of the Sachun, Jahrum, Asmari, and Razak formations, (<b>c</b>)—dolomitic limestones of the Jahrum Formation, (<b>d</b>–<b>f</b>)—karst features from the Jahrum Formation, (<b>g</b>)—stromatolite (with inserted microphotograph), (<b>h</b>,<b>i</b>)—intraformational conglomerates (with inserted microphotograph; 1—bivalve shells, 2—foraminifera tests, 3—chert clasts).</p>
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<p>Features from the studied locality of the Skala monocline: (<b>a</b>)—carbonates of the Gerpegemskaya Formation, (<b>b</b>)—variegated siltstones with carbonate and marlstone interbeds of the Mezmayskaya Formation, (<b>c</b>)—panoramic view from the cuesta edge toward the inverted landform (Gud) and the Late Triassic reef (Big Tkhach).</p>
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14 pages, 9044 KiB  
Article
An Enhanced Methodology for Creating Digital Twins within a Paleontological Museum Using Photogrammetry and Laser Scanning Techniques
by Markos Konstantakis, Georgios Trichopoulos, John Aliprantis, Konstantinos Michalakis, George Caridakis, Athina Thanou, Anastasios Zafeiropoulos, Stamatina Sklavounou, Christos Psarras, Symeon Papavassiliou and Efterpi Koskeridou
Heritage 2023, 6(9), 5967-5980; https://doi.org/10.3390/heritage6090314 - 22 Aug 2023
Cited by 4 | Viewed by 2068
Abstract
In recent years, researchers in the field of natural heritage have intensified their efforts to develop new ways to enhance the promotion and accessibility of natural content in order to attract more audiences using virtual representations of physical objects (digital twins). Therefore, they [...] Read more.
In recent years, researchers in the field of natural heritage have intensified their efforts to develop new ways to enhance the promotion and accessibility of natural content in order to attract more audiences using virtual representations of physical objects (digital twins). Therefore, they are increasingly incorporating new technologies and digital tools in their operations since their usage by the general public and in the natural heritage (NH) museums is considered particularly effective. Simultaneously, the increasing quality of the produced digitizations has opened up new opportunities for the exploitation of the outcomes of digitization beyond the initial anticipations. Responding to the growing demand of museum visitors for a personalized digital tour experience, especially amidst the recent COVID-19 pandemic, the v-PalM project aims to develop a digital platform to offer virtual guidance and education services at the Museum of Paleontology and Geology, which is hosted at the National Kapodistrian University of Athens. The development of the platform will be based on collecting data through various methods, including crowdsourcing, innovative information, and communication technologies, taking advantage of content digitization using 3D scanning devices. This paper demonstrates an enhanced methodology for the digitization of paleontological exhibits. The methodology uses photogrammetry and laser scanning methods from various devices, such as drones, laser scanners, and smartphones. These methods create digital twins that are suitable for various scenarios, including research, education, and entertainment. The proposed methodology has been applied to over fifty paleontological museum exhibits of varying sizes and complexities, and the resulting 3D models exhibit high accuracy in both their material and geometric aspects, while they also feature crucial details that assist researchers and the scientific community. Full article
(This article belongs to the Special Issue 3D Reconstruction of Cultural Heritage and 3D Assets Utilisation)
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<p>Scanning a giant fossil turtle (<span class="html-italic">Titanochelon</span> sp.) with FARO M70 and depicting the model with <span class="html-italic">FARO Scene</span>.</p>
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<p>Scanning a fossilized coral colony with <span class="html-italic">Scan-in-a-box</span> structured light scanner.</p>
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<p>Three-dimensional processing of a fossilized equid (<span class="html-italic">Hipparion</span> sp.) skull 3D model with IDEA software.</p>
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<p>Using iPhone and <span class="html-italic">Polycam</span> software to scan a giant mosasaur (fossilized marine reptile).</p>
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<p>The v-PalM methodology.</p>
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<p>Example of two different chunks. Chunks 1 and 2 of a giant mosasaur (fossilized marine reptile) using the v-PalM methodology.</p>
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<p>Example of a final 3D model of a fossilized pygmy hippopotamus with (<b>A</b>) and without (<b>B</b>) texture.</p>
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<p>A saber-toothed cat skull exhibit (<b>A</b>) and its obtained and optimized 3D model (<b>B</b>).</p>
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