TY - RPRT U1 - Forschungsbericht T1 - VoiceXML-Applications for E-Commerce and E-Learning N2 - Forschungsbericht Projektleiter: Peter J. A. Reusch Zeitraum: 2001-2004 Mitarbeiter: Bastian Stoll, Daniel Studnik Förderung: Fachhochschule Dortmund, Forschungssemester Y2 - 2005 U6 - https://nbn-resolving.org/urn:nbn:de:hbz:dm13-19028 UN - https://nbn-resolving.org/urn:nbn:de:hbz:dm13-19028 SP - 4 S1 - 4 ER - TY - RPRT U1 - Forschungsbericht T1 - The ReAl Computer Architecture BT - ReAl = Resource Algebra N2 - Forschungsbericht Projektleiter: Wolfgang Matthes Zeitraum: 2009-2011 Y2 - 2011 U6 - https://nbn-resolving.org/urn:nbn:de:hbz:dm13-20911 UN - https://nbn-resolving.org/urn:nbn:de:hbz:dm13-20911 SP - 2 S1 - 2 ER - TY - THES U1 - Master Thesis A1 - Koers, Lars T1 - Setup of test environments based on a Xilinx Zynq SoC for measuring the leakage current and for radiation qualifcation of SRAM based FPGAs N2 - This thesis discusses the development of test environments using Xilinx Zynq System on Chip (SoC) for measuring leakage currents and radiation qualification of Static Random Access Memory (SRAM) based Field Programmable Gate Arrays (FPGAs) at European Organisation for Nuclear Research (CERN). The effects of radiation on electronic components are explained, followed by an introduction to the FPGAs used. The GateMate FPGAs leakage current is measured in its application area with respect to temperature and core voltages. A comparable testing environment is used from the tester to the tested device, as it will later be used at CERN. The GateMate is being prepared in this setup for the finalization of radiation qualification at CERN, to be transferred later. For this purpose, the basic tests are explained and the outstanding tests are then carried out. The Lattice iCE40 UltraLite FPGA is used in an initial application test to determine its suitability for further radiation qualification tests at CERN. The analysis and presentation of the test results are followed by a summary and outlook. N2 - Diese Arbeit behandelt die Entwicklung von Testumgebungen mit einem Xlinix Zynq SoC zur Messung von Leckströmen sowie der Strahlenqualifizierung von SRAM basierten FPGAs am CERN. Zunächst werden die Effekte von Strahlung sowie deren Wirkung auf elektronische Komponenten erläutert. Anschließend wird eine Einführung in die verwendeten FPGAs gegeben. In der Durchführung wird der Leckstrom des GateMate FPGAs in seinem Einsatzbereich hinsichtlich Temperatur und Core-Spannungen gemessen. Es wird eine Testumgebung mit ähnlichen Verbindungen zwischen Tester und Testgerät verwendet, wie sie später bei Bestrahlungsstudien am CERN Anwendung findet. Der GateMate wird in diesem Setup für die Finalisierung der Strahlenqualifikation vorbereitet, um die spätere Inbetriebnahme am CERN zu beschleunigen. Dazu werden die Tests grundlegend erläutert und die noch ausstehenden im Anschluss durchgeführt. Der Lattice iCE40 UltraLite FPGA wird in einem ersten Applikationstest eingesetzt, um seine Eignung für weitere Tests zur Strahlenqualifikation am CERN zu bestimmen. Die Ergebnisse aller durchgeführten Tests werden ausgewertet und dargestellt. Abschließend wird eine Zusammenfassung mit Ausblick präsentiert. Y2 - 2024 UN - https://nbn-resolving.org/urn:nbn:de:hbz:dm13-38039 U6 - https://doi.org/10.26205/opus-3803 DO - https://doi.org/10.26205/opus-3803 SP - 136 S1 - 136 ER - TY - RPRT U1 - Arbeitspapier A1 - Vormann, Claus T1 - Say what you pay? Pay Information Disclosure in German Job Postings N2 - Purpose – Pay transparency is a promising topic both for research and practice. In particular, the new European directive on compensation transparency will increase its importance. However, research is still relatively sparse compared to other areas of HRM. In particular, state-of-the-art and use of pay information disclosure in job postings is neglected. This paper aims to shed light on this HRM topic. Methodology – The paper summarizes the findings of a preliminary study conducted among German companies researching the proportion of firms offering compensation information in job postings and digging into the reasons behind it. Findings – Only 17 % of the participating companies disclose meaningful information about compensation in their job postings. Doing so mainly depends on the company’s attitude towards pay transparency. The age of the company has a minor negative influence, i.e.~older companies are less prone to disclose salary information. Industry, size, and existing overall pay transparency in the company do not determine if pay information is disclosed in job postings. Research limitations – The main limitation of this survey is its small size of 88 participants and the snowball sampling approach employed. This limits its representativeness and calls for follow-up studies involving more companies and a wider variation of positions included. Practical implications – While the EU directive will make it obligatory to communicate about pay before the first interview, some companies do it already. The study helps HR departments that think about changing their practice before it becomes compulsory to better judge the current standards. KW - Human Resource Management KW - Vergütung KW - Personalmarketing KW - Studie KW - Pay Transparency KW - Job Posting KW - Gehaltstransparenz Y1 - 2023 UN - https://nbn-resolving.org/urn:nbn:de:hbz:dm13-37407 U6 - https://doi.org/10.26205/opus-3740 DO - https://doi.org/10.26205/opus-3740 SP - 13 S1 - 13 ER - TY - BOOK U1 - Buch A1 - Nielsen, Jakob A1 - Berger, J. M. A1 - Gilutz, Shuli A1 - Whitenton, Kathryn T1 - Return on Investment (ROI) for Usability N2 - Learn techniques for estimating the cost of usability activities and measuring improvements based on hundreds of development projects and 72 case studies. We present techniques for converting usage metrics into business gains for different industries (e.g., intranets, e-commerce, marketing, software, and electronics and hardware products). This 212-page report includes 131 screenshots of before and after designs, and discussions of design elements that increase business metrics. N1 - 4th edition SP - 217 S1 - 217 PB - Nielsen Norman Group CY - Fremont, CA ER - TY - THES U1 - Master Thesis A1 - Jung, Richard T1 - Radiation Qualification of the Cologne Chip GateMate A1 FPGA N2 - In this thesis, the radiation sensitivity of the novel Cologne Chip GateMate A1 field-programmable gate array (FPGA) is evaluated. An initial introduction of radiation mechanisms and their effects on electronics is given, followed by a brief overview of radiation test standards. The common elements present in FPGAs are discussed, which is followed by details of the GateMate FPGA device and a description of the software design flow. Afterwards, the development of a purpose-built printed circuit board (PCB) for radiation tests with the GateMate FPGA is detailed. Four components of the GateMate have been tested during three radiation campaigns, as well as a benchmark circuit to compare the radiation performance of the GateMate with other FPGAs tested at the European Organization for Nuclear Research (CERN). The test architecture consists of the device under test (DUT) FPGA and a TESTER FPGA whose task is to provide inputs to the DUT and record its response. The DUT and TESTER designs developed for all tests are discussed in detail. Finally, the results obtained during the irradiation campaigns are presented, showing that the GateMate FPGA performs similarly to other FPGAs using the same process technology. Only the benchmark test was not finalized, as implementation problems prevented its completion in the given time frame. The thesis concludes with a comprehensive summary and outlook. N2 - In dieser Arbeit wird die Strahlungsempfindlichkeit des neuartigen Cologne Chip GateMate A1 FPGA untersucht. Zunächst wurde eine Einführung in Strahlungseffekte und ihre Auswirkungen auf elektronische Komponenten gegeben, gefolgt von einem kurzen Überblick auf aktuelle Strahlungsteststandards. Die üblichen Elemente in FPGAs werden diskutiert, gefolgt von Details über GateMate spezifische Elementen sowie eines Überblicks über den Software-Design-Flow für GateMate FPGA Anwendungen. Im Anschluss wird die Entwicklung eines PCBs für Bestrahlungstests des GateMates detailliert. Vier Komponenten des GateMate wurden während drei Strahlungskampagnen getestet, sowie eine Benchmark-Schaltung, um die Strahlungsempfindlichkeit des GateMate mit anderen am CERN getesteten FPGAs zu vergleichen. Die Testarchitektur besteht aus dem DUT FPGA und einem TESTER FPGA, dessen Aufgabe es ist, Eingaben an das DUT zu liefern und dessen Reaktion aufzuzeichnen. Die für alle Tests entwickelten DUT- und TESTER-Designs werden im Detail diskutiert. Schließlich werden die während der Bestrahlungskampagnen erzielten Ergebnisse vorgestellt, die zeigen, dass der GateMate FPGA ähnliche wie andere FPGAs mit vergleichbarer Prozesstechnologie liefert. Lediglich der Benchmark-Test wurde nicht finalisiert, da Probleme bei der Implementierung die Fertigstellung im vorgegebenen Zeitrahmen verhinderten. Die Arbeit schließt mit einer umfassenden Zusammenfassung und einem Ausblick ab. KW - FPGA KW - Radiation qualification KW - CERN KW - LHC KW - GateMate Y2 - 2023 UN - https://nbn-resolving.org/urn:nbn:de:hbz:dm13-33643 U6 - https://doi.org/10.26205/opus-3364 DO - https://doi.org/10.26205/opus-3364 SP - 118 S1 - 118 ER - TY - JOUR U1 - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed) A1 - Lattner, Yannick A1 - Geller, Marius T1 - Radial Turbocompressor Chord Length Approximation for the Reynold's Number Calculation N2 - We present an approximation model for the chord length of radial turbocompressors. The model enables the calculation of a compressor's chord Reynold's number during the machine design process. The chord Reynold's number is shown to be the most accurate representation of the fluid dynamic properties inside the radial turbocompressor's impeller. It — however — requires the computation of the chord length, which is only available after defining the final impeller geometry. The method presenting in this paper only employs the compressors principal dimensions to approximate the chord length. The chord is modelled using a Bézier spline and quarter ellipse. This enables the earlier use of the chord Reynold's number during the machine design process of radial turbocompressors. KW - Strömungsmaschine , Reynolds-Zahl KW - Radial turbocompressors KW - Reynold's number KW - Turbomachinery KW - Design methods Y1 - 2023 UN - https://nbn-resolving.org/urn:nbn:de:hbz:dm13-33351 U6 - https://doi.org/10.26205/opus-3335 DO - https://doi.org/10.26205/opus-3335 ER - TY - THES U1 - Master Thesis A1 - Shi, Yanchen T1 - Power Simulation of a MIPS microAptiv UP Core implemented as a virtual ASIC prototype in a 65nm CMOS technology N2 - This thesis presents a power simulation of a MIPS MicroAptiv UP Core implemented as a virtual ASIC prototype using Taiwan Semiconductor Manufacturing Company(TSMC) 65 nm CMOS technology. Based on the MIPS instruction set program data is generated and introduced in the simulation by means of initialization files. Before the simulation, technology specific SRAM modules are integrated into theMIPS core. Two different programs are used for power characterization. The first program performs frequent memory accesses by means of load/store word instructions, while the second program is a loop which operates on registers only and mainly increments addresses. The simulation is based on a virtual prototype which is generated by synthesis and place & route including post-layout parasitic extractions. The stimuli for the power extraction is generated via gate-level simulation and forwarded to the power calculation engine. The effect of X-propagation on gate-level simulations is avoided by modifying the address-related statements in the execution data path module, which use another form of 2 to 1 multiplexer, setting the output to zero for all input signals even with an initial value of ’x’ without changing the functionality. Finally, the consumed power is provided by reports generated by the power simulation engine. The memory-centric program consumes 35.39mW of internal power using instructions, which is 0.73mW less than the internal power of the register-centric program, and the overall average power is also lower by almost 0.7mW. Y2 - 2022 UN - https://nbn-resolving.org/urn:nbn:de:hbz:dm13-32171 U6 - https://doi.org/10.26205/opus-3217 DO - https://doi.org/10.26205/opus-3217 SP - 93 S1 - 93 ER - TY - RPRT U1 - Forschungsbericht T1 - Personenverfolgung - Image and Vision Computing, Special Issue on Computer Vision Methods for Ambient Intelligence N2 - Forschungsbericht Projektleiterin: Gabriele Peters Zeitraum: 2007 Y2 - 2008 U6 - https://nbn-resolving.org/urn:nbn:de:hbz:dm13-20140 UN - https://nbn-resolving.org/urn:nbn:de:hbz:dm13-20140 SP - 6 S1 - 6 ER - TY - JOUR U1 - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed) A1 - Blome, Frerk A1 - Möller, Christina A1 - Böning, Anja T1 - Open House? - Class-specific career opportunities within German universities JF - Social Inclusion N2 - This article focuses on the development of class-specific inequalities within German universities. Based on data on the social origin of students, doctoral students, and professors in the long-term cross-section, the article views the empirically observable dynamic of social closure of higher education since the 1950s. The focus of interest is on the level of the professorship. Data show that career conditions for underprivileged groups have deteriorated again. This finding is discussed in the context of social closure theories. The article argues that closure theories consider social closure processes primarily as intentional patterns of action, aimed at a strategic monopolization of participation, and securing social power. Such an analytical approach means that unintended closure processes remain understudied. Our conclusion is that concealed modes of reproduction of social structures ought to be examined and theorized more intensively due to their importance for the elimination of social inequality within universities. Y1 - 2019 U6 - https://nbn-resolving.org/urn:nbn:de:hbz:dm13-20184 UN - https://nbn-resolving.org/urn:nbn:de:hbz:dm13-20184 SN - 2183-2803 SS - 2183-2803 VL - 7 (2019) IS - 1 SP - 101 EP - 110 ER -