@phdthesis{Koers2024, type = {Master Thesis}, author = {Koers, Lars}, title = {Setup of test environments based on a Xilinx Zynq SoC for measuring the leakage current and for radiation qualifcation of SRAM based FPGAs}, doi = {10.26205/opus-3803}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-38039}, pages = {136}, year = {2024}, abstract = {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.}, language = {en} } @phdthesis{M{\"u}ller-Baumgart2024, type = {Master Thesis}, author = {M{\"u}ller-Baumgart, Ulf}, title = {Creation of general representation of a local power grid as a basis for an embedding of electrical devices}, doi = {10.26205/opus-3795}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-37955}, pages = {96}, year = {2024}, language = {en} } @phdthesis{Alaee2024, type = {Master Thesis}, author = {Alaee, Ladan}, title = {Design and Implementation of a Mixed-Signal Processing Chain for the Optical Determination of Rotation Angles}, doi = {10.26205/opus-3793}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-37932}, pages = {264}, year = {2024}, abstract = {The aim of this master thesis is the design and implementation of mixed-signal processing chain for the optical determination of rotation angles by means of four sensors implemented as photodiodes with integrated polarization filters and a high-precision CORDIC hardware design implemented on an FPGA in Verilog. Furthermore, a light source and a polarizer are integrated in the measurement setup which is configured using an QT application.}, language = {en} } @phdthesis{Garc{\´i}a Rodr{\´i}guez2023, type = {Master Thesis}, author = {Garc{\´i}a Rodr{\´i}guez, Saul}, title = {Design and FPGA implementation of a highly resource-efficient AES-256 encryption and decryption engine}, doi = {10.26205/opus-3747}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-37471}, pages = {263}, year = {2023}, abstract = {Growing demand for security in a wide range of fields gives raise to research for more efficient and modern methods. Additionally, the increase of systems that are deployed on hardware requires security to be embedded in small area to protect intellectual property, hardware, and integrity and confidentially of sensible data. Therefore, in this work a design and FPGA implementation of a highly resource-efficient AES-256 encryption and decryption engine is presented, as well as its comparison with state-of-the-art designs. The design shows a reduction in the resources used due to its architecture to reuse hardware throughout all the processing. The design is implemented on a Xilinx Artix-7 FPGA.}, language = {en} } @techreport{Vormann2023, type = {Working Paper}, author = {Vormann, Claus}, title = {Say what you pay? Pay Information Disclosure in German Job Postings}, doi = {10.26205/opus-3740}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-37407}, pages = {13}, year = {2023}, abstract = {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.}, language = {en} } @inproceedings{OPUS4-3738, title = {International Research Conference 2017}, editor = {Wolff, Carsten and Reimann, Christian}, isbn = {978-3-00-058090-1}, doi = {10.26205/opus-3738}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-37389}, pages = {208}, year = {2017}, abstract = {Proceedings der IRC 2017}, language = {en} } @inproceedings{OPUS4-3737, title = {International Research Conference 2016}, editor = {Reusch, Peter and Wolff, Carsten}, isbn = {978-3-00-055144-4}, doi = {10.26205/opus-3737}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-37376}, pages = {228}, year = {2016}, abstract = {Proceedings der IRC 2016}, language = {en} } @inproceedings{OPUS4-3736, title = {International Research Conference 2015}, editor = {Reusch, Peter and Wolff, Carsten}, isbn = {978-3-00-051908-6}, doi = {10.26205/opus-3736}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-37366}, pages = {173}, year = {2015}, abstract = {Proceedings der IRC 2015}, language = {en} } @phdthesis{Sarangi2023, type = {Master Thesis}, author = {Sarangi, Jitikantha}, title = {Digital Calibration, Closed Loop Regulation and Implementation of Digital Debugging Features for the Delay Asymmetry Compensation Logic of a 3D Polarization Camera Based on Time-of-Flight Principle}, publisher = {Fachhochschule Dortmund}, address = {Dortmund}, doi = {10.26205/opus-3732}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-37323}, pages = {107}, year = {2023}, abstract = {The work presented in this thesis deals with the distance measurement aspect of a 3D Polarization ToF camera for automotive applications that uses a Time-to-Digital Converter (TDC) to measure the time interval between the emission of light from a source and its reception. Based on the measurement of the time interval, distance can be calculated by applying the equation of motion. In application, achieving an exact distance measurement is quite strenuous because the operating conditions of the design are susceptible to change due to environmental factors. Therefore, to achieve accuracy in distance measurement, the time interval between the emission and reception of light must be measured precisely. For this purpose, a delay asymmetry compensation logic is developed. This thesis elaborates the addition of debugging features, redesign of some components, digital calibration approach and the entire testbench environment of the delay asymmetry compensation logic. It also sheds light on the implementation of the designed logic for its successful realisation in real hardware. Lastly, it concludes by narrating future prospects and further scopes of development.}, language = {en} } @phdthesis{Jung2023, type = {Master Thesis}, author = {Jung, Richard}, title = {Radiation Qualification of the Cologne Chip GateMate A1 FPGA}, doi = {10.26205/opus-3364}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-33643}, pages = {118}, year = {2023}, abstract = {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.}, language = {en} } @unpublished{LattnerGellerKluck2023, author = {Lattner, Yannick and Geller, Marius and Kluck, Norbert}, title = {Efficiency Approximation of Centrifugal Compressors in the Cordier Diagram}, doi = {10.26205/opus-3366}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-33661}, pages = {12}, year = {2023}, abstract = {We present a simulation data-based efficiency approximation for radial turbocompressors, which is implemented in the well-known Cordier diagram. A sophisticated CAE workflow is used to calculate the operational characteristics of 50 machine designs with 50 impeller geometry variations each. A Kriging-based surrogate model is trained to approximate the efficiency of any machine designs' best geometry design. The models are implemented into a machine design workflow. As a result, duty-specific Cordier lines are introduced. They are automatically generated for a set of machine design parameters. The efficiency of the designs along the duty-specific Cordier lines is approximated. Using optimization techniques, an optimal compressor design for the given duty on every specific Cordier line may be identified. This highly increases the amount of information available in the early design stages for radial turbocompressors.}, language = {en} } @article{LattnerGeller2023, author = {Lattner, Yannick and Geller, Marius}, title = {Radial Turbocompressor Chord Length Approximation for the Reynold's Number Calculation}, doi = {10.26205/opus-3335}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-33351}, year = {2023}, abstract = {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 B{\´e}zier spline and quarter ellipse. This enables the earlier use of the chord Reynold's number during the machine design process of radial turbocompressors.}, language = {en} } @phdthesis{M{\"u}ller-Baumgart2022, type = {Bachelor Thesis}, author = {M{\"u}ller-Baumgart, Antonia}, title = {Estimation of fuel consumption of pleasure vessels based on environmental data models}, doi = {10.26205/opus-3198}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-31988}, pages = {130}, year = {2022}, language = {en} } @phdthesis{Shi2022, type = {Master Thesis}, author = {Shi, Yanchen}, title = {Power Simulation of a MIPS microAptiv UP Core implemented as a virtual ASIC prototype in a 65nm CMOS technology}, doi = {10.26205/opus-3217}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-32171}, pages = {93}, year = {2022}, abstract = {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.}, language = {en} } @book{NielsenBergerGilutzetal.2019, author = {Nielsen, Jakob and Berger, J. M. and Gilutz, Shuli and Whitenton, Kathryn}, title = {Return on Investment (ROI) for Usability}, publisher = {Nielsen Norman Group}, address = {Fremont, CA}, pages = {217}, year = {2019}, abstract = {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.}, language = {en} } @techreport{FaixB{\"u}chler2015, author = {Faix, Axel and B{\"u}chler, Jan-Philipp}, title = {Competitive advantage through innovation management}, doi = {10.26205/opus-2145}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-21458}, pages = {10}, year = {2015}, abstract = {Band 1 der Forschungsberichte zum Innovationsmanagement, herausgegeben von der Forschungsgruppe Innovationsexzellenz der Fachhochschule Dortmund (Jan-Philipp B{\"u}chler, Axel Faix, Wolfgang M{\"u}ller)}, language = {en} } @techreport{OPUS4-2091, title = {The ReAl Computer Architecture}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-20911}, pages = {2}, year = {2011}, abstract = {Forschungsbericht Projektleiter: Wolfgang Matthes Zeitraum: 2009-2011}, language = {en} } @techreport{OPUS4-2089, title = {Distributed audio network for speech enhancement in challenging noise backgrounds}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-20891}, pages = {2}, year = {2011}, abstract = {Forschungsbericht Projektleitung: Burkhard Igek Kooperationspartner: Curtin University of Technology, Perth, Australien Zeitraum: 2006-2009 F{\"o}rderung: Deutsche Forschungsgemeinschaft (DFG)}, language = {en} } @techreport{OPUS4-2040, title = {Evaluating a location sensitive multimedia museum guide: results from a field trial}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-20408}, pages = {4}, year = {2008}, abstract = {Forschungsbericht Projektleiter: Uwe Großmann Forschungsschwerpunkt: Mobile Business Mobile Systems Zeitraum: 2004-2008 Mitarbeiter: Sebastian Gansemer, Oliver Suttorp F{\"o}rderung: Bundesministerium f{\"u}r Bildung und Forschung: Anwendungsorientierte Forschung und Entwicklung an Fachhochschulen (aFuE) Verbundprojekt Projektpartner: RWE-Museum "Strom und Leben", Recklinghausen: Hanswalter Dobbelmann}, language = {en} } @article{BlomeM{\"o}llerB{\"o}ning2019, author = {Blome, Frerk and M{\"o}ller, Christina and B{\"o}ning, Anja}, title = {Open House? - Class-specific career opportunities within German universities}, series = {Social Inclusion}, volume = {7 (2019)}, number = {1}, issn = {2183-2803}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-20184}, pages = {101 -- 110}, year = {2019}, abstract = {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.}, language = {en} } @techreport{OPUS4-2016, title = {H{\"o}henkarten-basierte Bildsegmentierung - Image Segmentation Based on Height Maps}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-20169}, pages = {3}, year = {2008}, abstract = {Forschungsbericht Projektleiterin: Gabriele Peters Zeitraum: 2006-2007}, language = {en} } @techreport{OPUS4-2014, title = {Personenverfolgung - Image and Vision Computing, Special Issue on Computer Vision Methods for Ambient Intelligence}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-20140}, pages = {6}, year = {2008}, abstract = {Forschungsbericht Projektleiterin: Gabriele Peters Zeitraum: 2007}, language = {en} } @techreport{OPUS4-2015, title = {Kunst aufr{\"a}umen {\`a} la Ursus Wehrli - Content-Based Selection of Methods for Image Segmentation}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-20150}, pages = {3}, year = {2008}, abstract = {Forschungsbericht Projektleiterin: Gabriele Peters Zeitraum: 2007}, language = {en} } @techreport{OPUS4-2013, title = {Dunkle Tage - Dark Days}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-20130}, pages = {5}, year = {2008}, abstract = {Forschungsbericht Projektleiterin: Gabriele Peters Zeitraum: 2007}, language = {en} } @techreport{OPUS4-2007, title = {Hochdimensionale Datenr{\"a}ume - a topology-independent similarity measure for high-dimensional feature spaces}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-20071}, pages = {3}, year = {2008}, abstract = {Forschungsbericht Projektleiterin: Gabriele Peters Zeitraum: 2005-2007}, language = {en} } @techreport{OPUS4-2008, title = {Interaktive Objekterkennung - combining reinforcement learning and belief revision - a learning system for active vision}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-20080}, pages = {4}, year = {2008}, abstract = {Forschungsbericht ProjektleiterInnen: Gabriele Peters, Gabriele Kern-Isberner, Technische Universit{\"a}t Dortmund, Fakult{\"a}t f{\"u}r Informatik Zeitraum: 2005-2007}, language = {en} } @techreport{OPUS4-2002, title = {Dynamisches Lernen f{\"u}r geometrische und graphische Objekterfassung - a vision system for interactive object learning}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-20026}, pages = {4}, year = {2008}, abstract = {Forschungsbericht Projektleitung: Gabriele Peters Zeitraum: 2005-2007}, language = {en} } @techreport{OPUS4-2004, title = {Fotopanormanen - squaring the circle in panoramas}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-20042}, pages = {4}, year = {2008}, abstract = {Forschungsbericht Projektleitung: Pietro Perona, California Institute of Technology, Computational Vision Lab, Gabriele Peters Zeitraum: 2005-2007}, language = {en} } @techreport{OPUS4-2001, title = {Bild-{\"A}sthetik - Aesthetic primitives of images for visualization}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-20018}, pages = {7}, year = {2008}, abstract = {Forschungsbericht Projektleiterin: Gabriele Peters Zeitraum: 2005-2007}, language = {en} } @techreport{OPUS4-1937, title = {Integration of multiple sensors using a generic sensor management framework}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-19373}, pages = {5}, year = {2008}, abstract = {Forschungsbericht Projektleiter: Burkhard Igel Forschungsschwerpunkt: Process Improvement \& CAQ Zeitraum: 2006-2008 Kooperation: Curtin University of Technology Perth, Australien F{\"o}rderung: DFG - Deutsche Forschungsgemeinschaft, Bonn}, language = {en} } @techreport{OPUS4-1928, title = {Innovation challenges and economics for HVDC stations}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-19284}, pages = {5}, year = {2008}, abstract = {Forschungsbericht Projektleiter: Karl-Josef Diederich Kooperation: Ferdinand Lutz, IPL Technology GmbH, Kempen, Peter Steinfeld, Essent Wind Deutschland GmbH, Hannover}, language = {en} } @techreport{OPUS4-1902, title = {VoiceXML-Applications for E-Commerce and E-Learning}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-19028}, pages = {4}, year = {2005}, abstract = {Forschungsbericht Projektleiter: Peter J. A. Reusch Zeitraum: 2001-2004 Mitarbeiter: Bastian Stoll, Daniel Studnik F{\"o}rderung: Fachhochschule Dortmund, Forschungssemester}, language = {en} } @techreport{OPUS4-1903, title = {New Communication Concepts based upon Advanced RSS Feeds}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-19031}, pages = {4}, year = {2005}, abstract = {Forschungsbericht Projektleiter: Peter J. A. Reusch Zeitraum: 2001-2004 Mitarbeiter: Bastian Stoll, Torsten Schulwandt, Pawel Serwatowski}, language = {en} } @inproceedings{Surkemper2000, author = {Surkemper, Klaus-Peter}, title = {Introducing into a career and professional identity in Social Work}, series = {Social work and social development - new trends in a changing Europe : proceedings / 7th Biannual European IUCISD Conference, Riga, Latvia, Sept. 28th-30th, 2000}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:dm13-37}, year = {2000}, abstract = {Angesichts der Bedeutung der Berufseinstiegsphase f{\"u}r die Ausbildung professioneller Identit{\"a}t hat das Berufsanerkennungsjahr im Sozialwesen eine weichenstellende Funktion. Gest{\"u}tzt auf eine breite empirische Untersuchung zu den Erfahrungen von AbsolventInnen der Fachbereiche Sozialarbeit und Sozialp{\"a}dagogik in Dortmund werden die {\"u}berwiegend positiven R{\"u}ckmeldungen der u.a. auf den Zusammenhang mit einschl{\"a}gigen praktischen Vorerfahrungen, der Art des Tr{\"a}gers und dem Geschlecht {\"u}berpr{\"u}ft. Insgesamt wird deutlich, dass der Beitrag der FH-gest{\"u}tzten Ausbildung f{\"u}r den Erfolg des Anerkennungsjahres und die Praxistauglichkeit kaum nachzuweisen ist. Der Verfasser sieht einen Grund f{\"u}r diese Feststellung in dem f{\"u}r das Sozialwesen typischen Merkmal des "weichen Studiengangs".}, language = {en} }