Search Results (1,965)

In this study, microstructure, mechanical, and shape memory properties of the welded Fe-based shape memory alloy (Fe-SMA) plates with a nominal composition of Fe-17Mn-5Si-10Cr-4Ni-(V, C) (wt.%) by gas tungsten arc welding were investigated. The optimal heat input to ensure full penetration of the Fe-SMA plate with a thickness of 2 mm was found to be 0.12 kJ. The solidified grain morphology adjacent to the partially melted zone was columnar, whereas the equiaxed morphology emerged as solidification proceeded. The ultimate tensile decreased after welding owing to the much larger grain size of the fusion zone (FZ) and heat-affected zone (HAZ) than that of the base material (BM). Weldment showed lower pseudoelastic (PE) recovery strain and higher shape memory effect (SME) than those of the plate, which could be ascribed to the large grain size of the FZ and HAZ. Recovery stress (RS) slightly decreased after welding owing to lower mechanical properties of weldment. On the other hand, aging treatment significantly improved all PE recovery, SME, and RS via carbide precipitation. Digital image correlation analysis revealed that HAZ showed the lowest SME after heating and cooling, implying that the improved SME of FZ compensated for the low SME of the HAZ. Full article

Electroless ZnO (≈900 nm) was deposited on the surface of an Mg-Al alloy (AM60) to reduce its degradation in the marine environment. Uncoated and coated ZnO samples were exposed to an SME simulated marine solution for up to 30 days. The AFM and optical images revealed that the corrosion attack on the ZnO-AM60 surface was reduced due to an increase in the surface hydrophobicity of the ZnO coating (contact angle of ≈91.6°). The change in pH to more alkaline values over time was less pronounced for ZnO-AM60 (by ≈13%), whereas the release of ${\mathrm{Mg}}^{2+}$ ions was reduced by 34 times, attributed to the decrease in active sites on the Mg-matrix provided by the electroless ZnO coating. The OCP (free corrosion potential) of ZnO-AM60 shifted towards less negative values of ≈100 mV, indicating that electroless ZnO may serve as a good barrier for AM60 in a marine environment. The calculated polarization resistance (${\mathrm{R}}_{\mathrm{p}}$), based on EIS data, was ≈3 times greater for ZnO-AM60 than that of the uncoated substrate. Full article

In our paper, we examine the simultaneous impact of the agglomeration economy (AE) and the innovation ecosystem (IE) on the competency development of SMEs in the Piemonte region in three high-tech sectors: aerospace, mechatronics, and automotive. This study focuses on the critical challenge for SMEs: survival and market position expansion amidst rapidly changing external environments. We used the capability approach, which includes identifying and assessing a company’s competencies through the capability matrix, as a tool to analyse a company’s competitiveness in the industry based on structural changes; we determined the key insights from managerial practices of SMEs that help to comprehend the behaviour of high-performing, sustainable-performing, and low-performing companies in the development of competencies. The key finding is that SMEs’ sustainability in the context of structural changes in the external environment is primarily influenced by factors such as investment in the development of company competencies, industrial cooperation, strategic planning, cross-fertilisation, and the impact of company age and size on the availability of resources, along with the level of internationalisation. This study also identifies the main challenges these SMEs face, particularly the lack of highly skilled human resources to meet the sector’s specific needs, as well as the difficulties companies face in adapting to changes in consumer behaviour and forecasting future business strategies. In addition, this study introduces the AE and IE variables as strategic tools to enable company representatives to improve their development strategies. Full article

Strategic entrepreneurship behaviors enhance business performance and sustainability in Turkish SMEs by fostering innovation and leveraging competitive intensity for sustained growth. Employing strategic leadership theory, this study examines the effect of strategic entrepreneurial behaviors on business performance through the mediation role of business model innovation (BMI) and the moderation effect of competitive intensity. A quantitative approach was used, and data from 313 managers and business owners in Turkish small and medium enterprises (SMEs) were collected using a structured questionnaire. The results have shown that strategic entrepreneurial behavior significantly and positively impacts business performance and business model innovation. Business model innovation, in turn, positively affects business performance. Competitive intensity moderates the relationship between strategic entrepreneurial behavior and business model innovation, strengthening it under higher competitive pressure levels. However, competitive intensity does not moderate the direct link between strategic entrepreneurial behavior and business performance. At higher levels of competitive intensity, the conditional indirect effect of strategic entrepreneurial behavior on business performance through business model innovation becomes more prominent. The findings of this study offer actionable insights for enhancing SME performance through strategic entrepreneurship, innovative business models, and competitive strategy adaptation. Full article

Carvacrol is a compound present in essential oils with proven antimicrobial activity against numerous pathogens. We firstly determine the post-antibiotic effect (PAE) of carvacrol (1×, 2×, 4× MIC) and post-antibiotic sub-minimum inhibitory concentration (MIC) effect (1× + 0.25× MIC and 2× + 0.25× MIC) for two concentrations of Salmonella Typhimurium ATCC14028 (10⁶ and 10⁸ CFU/mL). Prior to testing, the minimum concentration and exposure time to achieve the bacterial inhibition (MIC 0.6 mg/mL and 10 min) were determined by broth microdilution and time–kill curve methods, respectively. At the MIC, carvacrol did not generate any PAE. At twice the MIC, the PAE was 2 h with the standard inoculum (10⁶ CFU/mL) and 1 h with the high-density inoculum (10⁸ CFU/mL). At 4× MIC concentrations, the PAE was higher in both cases > 43.5 h. Continuous exposure of post-antibiotic phase bacteria (1× and 2× MIC) to carvacrol at 0.25× MIC (0.15 mg/mL) resulted in an increase in PAE (PA-SME) above 43.5 h with both inocula. These results suggest that the PA-SME of carvacrol for S. Typhimurium can be significantly prolonged by increasing the sub-MICs, which would allow dose spacing, reduce adverse effects and improve its efficacy in the treatment of infected animals and as a disinfectant in agri-food facilities. Full article

In the quantum era, the rapid development of enterprises cannot be separated from the efforts of employees, and the improvement of employee performance is also closely related to the behavior and attitude of organizational leaders. Quantum leadership, as a new leadership paradigm, differs from traditional Newtonian classical mechanics in that it emphasizes wholeness and interconnectedness, considers new ideas as the key to success, and values complex changes in the organizational environment, thus helping the organization provide sustainable development in the future. In addition, quantum leadership is able to manage in chaotic and potentially uncertain environments, encouraging employees to explore new ideas for solving problems, stimulating enthusiasm and motivation for innovation, and thus improving the level of employee performance. In particular, as the importance of innovation performance has been emphasized, it has been considered as a key variable in driving and promoting sustainable organizational development. Moreover, this study is different from previous studies that validate traditional leadership. We focus on an emerging type of leadership that distinguishes itself from traditional leadership—quantum leadership—which is a leadership model that is currently receiving a lot of attention. In the uncertain future environment, quantum leadership is gradually becoming a key factor for business growth and plays an important role in the survival and development of organizations in the future environment. Based on this research background, this study argues that quantum leadership is closely related to employee innovation performance. This study examines whether quantum leadership improves employee innovation performance and the sequential multiple mediating effects of organizational intelligence and knowledge sharing. Most of the previous studies focused only on the mediating or moderating role of the model. This study expands this area of research by incorporating the moderating role of innovative culture and validating its effects. This finding explores the development of quantum leadership and provides a theoretical foundation for related research. In addition, this study collected data from 345 employees of Chinese SMEs in the context of the fourth industrial revolution. These results suggest that quantum leadership positively affects innovation performance. Organizational intelligence and knowledge sharing have multiple serial mediating effects on quantum leadership and innovation performance. Moreover, the interaction between innovative culture and knowledge sharing improves employees’ innovation performance. Therefore, this study clarifies the causal relationship between quantum leadership and innovation performance through theoretical and validated research models. It lays the foundation for the sustainable development of organizations in the future. Full article

This research provides the first deep and empirical look into Brazil’s increasing equity crowdfunding, or crowdinvest, market, and examines its peculiarities. It is a pioneering work dedicated to understanding which characteristics most impact the success of offers in the country, and whether there is any representative movement pointing to the inclusion of gender, firm age, and location or participation of small investors. We employ descriptive and quantitative research techniques and analyses all the offerings derived through this mechanism from 1 January 2017 to 31 December 2020—totaling 234 operations, considering successful offers (the ones that received investment) and unsuccessful offers (those that failed in raising funds), registered by 24 platforms in the country according to CVM (Comissão de Valores Mobiliários), the Brazilian SEC, under regulation Instruction 588. Furthermore, we use empirical and publicly available data from several sources. The findings reveal that mutual offers are more attractive to investors than those of equity, impacting the dependent variable of success. Besides this, firm location is the only inclusion aspect with representativeness among the independent variables tested. The main contributions of the research lie in providing the first empirical study that (1) consolidates a consistent database of the equity crowdfunding industry in Brazil, (2) reveals the role of crowdinvest in Brazil, related to bank credit to SMEs, and (3) provides recommendations to the main stakeholders that can improve the whole ecosystem. Full article

Coopetition, while offering significant strategic advantages, presents challenges in maintaining long-term collaboration among competitors, often due to a lack of perceived value for the participating actors. This study explores the role of technology in overcoming these challenges by applying the Service-Dominant Logic (S-D Logic) framework to investigate how technology-driven networks can enhance value co-creation among small and medium-sized enterprises (SMEs). The study hypothesizes that transitioning to technology-driven coopetition networks can substantially improve value co-creation. To test this hypothesis, the research critically evaluates existing theoretical approaches to coopetition, identifies gaps in understanding value creation mechanisms, and implements an experimental technology-driven coopetition network leveraging Internet of Things (IoT) technology. The research design is applied explicitly to the Portuguese ornamental stone industry, a significant economic and cultural sector. The findings confirm that technology-driven coopetition networks can enhance value co-creation and improve outputs. These results suggest that integrating technology into coopetition frameworks can provide a viable path to sustaining competitive advantages in SMEs. Full article

Taking the innovation chain (IC) as the perspective, we discuss the effect of digital transformation (DT) on enterprises’ green innovation (GI) using data from Chinese listed companies from 2013 to 2021. The results show that DT has a positive effect on enterprises’ GI, and this effect is not only reflected in the quantity of green patent applications but also the GI efficiency and quality. Heterogeneity analysis shows that DT has a positive effect on GI for both large firms and small and medium-sized enterprises (SMEs), but the effect is greater for SMEs. Relative to enterprises that have received governmental incentive-based industrial policies, the effect is smaller in the enterprises that have no incentive-based industrial policies and are subjected to command-based environmental regulations. As the level of industry competition increases from low to high, the impact of DT on GI will grow. However, when the level of industry competition becomes excessively high, the impact will decrease. DT positively affects enterprises’ GI behaviors by facilitating the cultivation of human capital, improving the allocation of innovation resources, and increasing the level of cooperative green innovation. Full article

In the digital era, cloud computing stands as a pivotal tool in the transformative journey of enterprises, with China’s tech landscape serving as a prime exemplar. However, when enterprises embrace cloud computing, they face complex hurdles, mainly technical ones. To understand how the complexity of cloud migration affects their digital transformation, our research meticulously constructed business process models for business deployment in both non-cloud and cloud contexts, spanning the IaaS, PaaS, and SaaS levels. By harnessing China’s public cloud market data, we constructed the Cloud Migration Complexity Index, providing a tangible metric to gauge the intricacies of cloud migration and their implications on digital transformation. The findings illustrate that a decrease in cloud migration complexity significantly accelerates digital transformation, with the reduction in SaaS complexity having the most profound impact. Analyzing businesses of varying scales, the diminishing complexity of SaaS predominantly boosts digital transformation for non-SME enterprises, while reduced PaaS complexity is most beneficial for SMEs. This study advocates for the government to expand the PaaS market and suggest that cloud providers develop more PaaS-based products to optimize cloud migration both technically and economically. Full article

Iron-based shape memory alloys (Fe-SMAs), traditionally manufactured, are favored in engineering applications owing to their cost-effectiveness and ease of fabrication. However, the conventional manufacturing process of Fe-SMAs is time-consuming and raw-material-wasting. In contrast, additive manufacturing (AM) technology offers a streamlined approach to the integral molding of materials, significantly reducing raw material usage and fabrication time. Despite its potential, research on AMed Fe-SMAs remains in its early stages. This review provides updated information on current AM technologies utilized for Fe-SMAs and their applications. It provides an in-depth discussion on how printing parameters, defects, and post-printing microstructure control affect the mechanical properties and shape memory effect (SME) of AMed Fe-SMAs. Furthermore, this review identifies existing challenges in the AMed Fe-SMA approach and proposes future research directions, highlighting potential areas for development. The insights presented aim to guide improvements in the material properties of AMed Fe-SMAs by optimizing printing parameters and enhancing the SME through microstructure adjustment. Full article

In four-dimensional additive manufacturing (4DAM), specific external stimuli are applied in conjunction with additive manufacturing technologies. This combination allows the development of tailored stimuli-responsive properties in various materials, structures, or components. For shape-changing functionalities, the programming step plays a crucial role in recovery after exposure to a stimulus. Furthermore, precise tuning of the 4DAM process parameters is essential to achieve shape-change specifications. Within this context, this study investigated how the structural arrangement of infill patterns (criss-cross and concentric) affects the shape memory effect (SME) of compression cold-programmed PLA under a thermal stimulus. The stress–strain curves reveal a higher yield stress for the criss-cross infill pattern. Interestingly, the shape recovery ratio shows a similar trend across both patterns at different displacements with shallower slopes compared to a higher shape fixity ratio. This suggests that the infill pattern primarily affects the mechanical strength (yield stress) and not the recovery. Finally, the recovery force increases proportionally with displacement. These findings suggest a consistent SME under the explored interval (15–45% compression) despite the infill pattern; however, the variations in the mechanical properties shown by the stress–strain curves appear more pronounced, particularly the yield stress. Full article

E-commerce has become uniquely relevant to small- and medium-sized enterprises (SMEs) as an essential catalyst for their growth and sustainability. SMEs see e-commerce portals as a strategic way to engage in digital business activities without having to implement costly proprietary e-commerce solutions. In addition, partnering with these portals frees them from complex tasks such as positioning, portal maintenance, and adapting the portal to new technologies and trends. This multifaceted advantage positions e-commerce portals as invaluable partners, streamlining operations and allowing SMEs to focus more on their core business competencies. However, e-commerce portals or e-marketplaces are not without their challenges. Today, they face increasing pressure to reduce their environmental impact and to empower local commercial businesses, as well as local businesses in the entertainment and culture industry. To address these challenges, there is a pressing need to propose new types of e-marketplaces that support the concept of the 15-minute city and in which virtual and augmented reality play a key role. These marketplaces would not only boost environmental sustainability but also strengthen the connection between local businesses and the community, creating a stronger and more collaborative network that benefits both businesses and consumers. Full article

The rise of artificial intelligence is fundamentally transforming the competitive landscape across various sectors, offering visionary enterprises new pathways to innovation development and to get a competitive edge. AI leverages data, analysis, and observations to perform tasks without hard coding, and benefits from self-learning and continuous improvement. We use Systems Thinking to frame how managers may adopt and integrate AI in business activities. We also investigate the motivations driving entrepreneurs to adopt AI solutions, and how they may impact on sustainable business model innovation, by administering a questionnaire to a sample of innovative Italian SMEs to get a comprehensive overview of the dynamics influencing AI adoption in business. This study sheds light on the intricate relationship between technology, sustainability, and corporate innovation. It offers both valuable insights for future research and for strategic managerial decisions on AI integration. Furthermore, it helps the development of innovative, sustainable business models in the evolving landscape of the Great Reset. Full article

Small and medium-sized enterprises (SMEs) play a critical role in promoting the development of China’s real economy and improving national productivity, but their financing still faces challenges. In recent years, supply chain finance (SCF) has become one of the most important solutions to SMEs’ financing difficulties. Promoting the digital and innovative development of SCF can better meet the financing needs of SMEs. This study is based on a case study of Zhejiang MYbank Co., Ltd. (MYbank) in Hangzhou, China, which is a representative institution of digital supply chain finance development in China and committed to realizing the digital innovation development of SCF. Based on MYbank’s financial index data from 2018 to 2022, the implementation effect of MYbank’s digital supply chain finance is quantitatively analyzed from the perspectives of SMEs and MYbank. The main findings are as follows.(1) In the practice of digital supply chain finance, MYbank implements the new concepts of SCF decentralization and full coverage of supply chain links while enhancing the sustainability of SCF. (2) For SMEs, MYbank’s digital supply chain finance development has led to an increase in the financing scale and financing availability of SMEs. (3) The analysis of MYbank’s comprehensive benefits shows that the digital innovation development of SCF effectively increased the overall economic value of the enterprise during the period of 2018–2022. Based on these findings, this study provides implications for commercial banks and other financial institutions to develop digital supply chain finance. Full article