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1994, The Hydrographic Journal
The rapid uptake of GPS in the offshore positioning industry of the early 1990s led to quality control becoming a topical, but controversial issue. The providers of GPS positioning services used their own, usually arbitrary, ways of defining positioning quality and monitoring the performance of their services, which created significant problems in the management of positioning contracts. Driven and written by Shell (Nicolai), the UK Offshore Operators Association (UKOOA) published a set of standardised quality measures in 1992, which this paper describes and elaborates. It was later in 1994 superseded by the publication of full UKOOA guidelines, which, in turn are now superseded by the “Guidelines for GNSS positioning in the oil and gas industry”, published in 2011 as report OGP 373-19. The principles described in the paper are still valid.
2010 •
Metrologia
Identifying the degraded environment and bad receivers setting by using the GPS data quality indices2008 •
International Association of Geodesy Symposia
Towards More Reliable Estimation of GPS Positioning Accuracy2005 •
11th International Symposium on Measurement and Quality Control 2013, September 11-13, 2013, Cracow-Kielce, Poland
Proposal for updates in the GPS standards concerning coordinate measurements uncertainty2013 •
The paper presents arguments for and proposals of changes in the series of standards ISO 15530. In particular, authors propose to change the classification of the methods of uncertainty evaluation, change the title of the ISO 15530-4 and make changes that will facilitate the use of these standards to industrial employees. In authors’ opinion the classification of the uncertainty evaluation methods for coordinate measurements should be based on the models given in ISO 14253-2 and GUM, i.e. the terms of “black box” and “transparent box” as well as type A and B methods. Authors think that both methods included in ISO 15530-3 and ISO/TS 15530-4 are type A evaluation methods. The measurement model for the evaluation described in the part 3 is classic black box model and the method concerned in part 4 – the transparent box model. The analytical methodology developed by authors (EMU-CMMUncertaintyTM software) is accounted as type B evaluation and transparent box model. The reasons of lack of interests for the evaluation method with use of calibrated workpiece are presented. Some simplifications to the procedure as well as extensions to the descriptive part are proposed. It’s pointed out that all methods are “task-specific” and all use the uncertainty budget. It is brought to attention that the part 4 applies not only to the simulation but to all methods for which a computer software is provided therefore a proper title change is proposed for this part.
2024 •
Presentation at the 2024 Student Summer Seminar on St. Thomas Aquinas, organized by the Angelicum Thomistic Institute. Rome – July 2024.
Garten der Erlösung
Stuckenbruck Garten der Erlösung2024 •
Sermon (German) given at St. Markuskirche in München on 7. July 2024, within a Sermon series on „Garten“ for the Universitätsgottesdienst of the Protestant Faculty of Theology the Ludwig Maximilian University of Munich. Sermon text is Romans 8:18-25, with special attention given to selected parts from 1Enoch chapters 7 through 11.
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