Round Robin Test on "microscopic images of cast iron samples" in the DGM working group "quantitative structural analysis" of the expert committee materialography [Ringversuch zum Thema "Mikroskopische Aufnahmen von Gusseisenproben" im Arbeitskreis "Quantitative Gefügeanalyse" des Fachausschusses Materialografie der DGM]
Sonntag U.,Gesellschaft fur Informatik
Praktische Metallographie/Practical Metallography | Year: 2015
In principal, the task was properly understood and implemented by all the evaluating laboratories. During the course of the experiment, the scratched orientation markings became blurred and could only hardly be recognized. The image files were stored in different image formats (jpg, tif, bmp). There was no significant loss of information. Measurements were made based on the calibration factors the users entered in the Excel spreadsheet. These were partially entered with only 2 decimal places which probably entailed a minor loss of accuracy for the measurement of the particle sizes. The participants' ID numbers were newly assigned. Thus, the evaluation performed is anonymized. After a visual check, the high deviations for the particle density for the exceptional cases could clearly be attributed to insufficient cleaning of the sections. The particle shapes and sizes have only barely changed in the course of the test execution and frequently performed polishing. The measurement settings, in particular relating to the image acquisition conditions, partially exhibited significant deviations among the participating laboratories. However, the deviations for the measured images at 100× and at 50× within one laboratory were considerably smaller which is evidence of a good reproducibility. The smallest deviation was obtained when 3 and 5 megapixel cameras are used in connection with a 0.63 zoom adapter and a set background brightness of approx. 220. By means of comparative measurements, insights could be gained on measurement inaccuracies. Hence, the implementation of the round robin test was successful. Based on the insights gained and on the available image material, further investigations on the subject of quantitative micro-structural features can be conducted. What is more, a comparative evaluation by image analysis (shape, size, nodularity, fraction) can be performed according to EN ISO 945 using different image processing programs. In addition to that, the GFal develops a testing program for the shape classification which is based on a hierarchically structured classifier approach. Another very interesting approach is followed: for the samples from the round robin test, a 3D data record is to be generated by means of CT and, based on that, several sectional planes in different positions are to be analyzed once in a comparative manner. Corresponding activities are currently prepared.
Iwainsky A.,Gesellschaft fur Informatik
ACM International Conference Proceeding Series | Year: 2015
Today navigation systems for automobiles are highly developed. Furthermore, also for pedestrians and users of public transport technical means for navigation support exist. However, there is a lack of help for handicapped persons. What are the reasons for this situation? The answer is simple: Handicapped persons are a target group for IT-technology that is small in comparison to all other users of navigation systems. Furthermore they demand another database with much more detailed path characteristics and partially other system functionality than conventional navigation systems. This paper describes the user-group-specific demands on technical navigation support and the co-operative development of a corresponding system in the frame of a R&D-project, funded by the German Federal Ministry for Education and Research. It concentrates on modelling the potentials and restrictions of movement opportunities of handicapped people and on route optimization. Copyright © 2015 ACM.
Heinz G.K.,Gesellschaft fur Informatik
Studies in Computational Intelligence | Year: 2011
Interference networks (IN) and interference systems have a comparable mathematical-physical background, reaching from photonic wave interference in optics over signal interference in digital filters (FIR, IIR), wave interference in Radar- or Sonar- devices to ionic pulse interference in nerve nets. Special properties of IN are short wavelength, relative timing and non-locality of function. Behind concepts of cybernetics and informatics, we find in interference integrals a hidden functional principle for nerve nets, the non-locality of function. The paper highlights integration methods in non-recursive IN. It reflects on simulation movies on the web .
Truszkowski A.,Gelsenkirchen University of Applied Sciences |
Jayaseelan K.V.,European Bioinformatics Institute |
Neumann S.,Gesellschaft fur Informatik |
Willighagen E.L.,Karolinska Institutet |
And 2 more authors.
Journal of Cheminformatics | Year: 2011
Background: The computational processing and analysis of small molecules is at heart of cheminformatics and structural bioinformatics and their application in e.g. metabolomics or drug discovery. Pipelining or workflow tools allow for the Lego™-like, graphical assembly of I/O modules and algorithms into a complex workflow which can be easily deployed, modified and tested without the hassle of implementing it into a monolithic application. The CDK-Taverna project aims at building a free open-source cheminformatics pipelining solution through combination of different open-source projects such as Taverna, the Chemistry Development Kit (CDK) or the Waikato Environment for Knowledge Analysis (WEKA). A first integrated version 1.0 of CDK-Taverna was recently released to the public. Results: The CDK-Taverna project was migrated to the most up-to-date versions of its foundational software libraries with a complete re-engineering of its worker's architecture (version 2.0). 64-bit computing and multi-core usage by paralleled threads are now supported to allow for fast in-memory processing and analysis of large sets of molecules. Earlier deficiencies like workarounds for iterative data reading are removed. The combinatorial chemistry related reaction enumeration features are considerably enhanced. Additional functionality for calculating a natural product likeness score for small molecules is implemented to identify possible drug candidates. Finally the data analysis capabilities are extended with new workers that provide access to the open-source WEKA library for clustering and machine learning as well as training and test set partitioning. The new features are outlined with usage scenarios. Conclusions: CDK-Taverna 2.0 as an open-source cheminformatics workflow solution matured to become a freely available and increasingly powerful tool for the biosciences. The combination of the new CDK-Taverna worker family with the already available workflows developed by a lively Taverna community and published on myexperiment.org enables molecular scientists to quickly calculate, process and analyse molecular data as typically found in e.g. today's systems biology scenarios. © 2011 Truszkowski et al;.
Gesellschaft für Informatik | Date: 2010-02-09
1. The invention relates to a modular, expandable measuring device comprising an access-protected area. 2.1 Systems having a variety of designs are known which offer protection against unauthorized manipulation by end users/customers, in particular comprising a sealable housing cover or an electronic security seal. The user is always the measuring facility operator or measurement service provider, who procures the resource counters, installs them at the customers site, services and reads them; the same applies to communication installations. Lacking in practice, however, is a measuring device/meter which can be used universally, independently of other technical conditions, and which can be expanded/adapted in a simple manner and has at least one access-protected area/space in the housing. 2.2. According to the invention, the measuring device, in particular modular energy meter (EZ), comprises: a two-part housing (SA, U) having a detachable connection for holding together the housing parts; at least one internal module (Z, K, IO, IR) arranged in a protected area; at least one external module (EO, ER, EK, EKR) arranged outside of the protected area; and at least one optical interface (OSE, OSI) which is arranged in the internal module (Z, K, IO, IR) and/or in the external module (EO, ER, EK, EKR) and is used for communication, including the detection of the opening of the protected area. 2.3 The invention pertains to the field of measuring devices and systems for the combined recording of consumption data.