@incollection{Rudolph, author = {Rudolph, Clarissa}, title = {Frauen- und Gleichstellungspolitik: Gesellschaftlicher Wandel durch Institutionen?}, series = {Feminismus: Kritik und Intervention}, booktitle = {Feminismus: Kritik und Intervention}, editor = {Kurz-Scherf, Ingrid and Lepperhoff, Julia and Scheele, Alexandra}, publisher = {Westf{\"a}lisches Dampfboot}, address = {M{\"u}nster}, isbn = {978-3-89691-777-5}, pages = {115 -- 132}, language = {de} } @book{ZilchNiedermeierFinckh, author = {Zilch, Konrad and Niedermeier, Roland and Finckh, Wolfgang}, title = {Querkrafttragf{\"a}higkeit von historisch mit Betonstabstahl bewehrten und mit geklebter Bewehrung biegeverst{\"a}rkten Betonbauteilen}, publisher = {Fraunhofer IRB Verlag}, address = {Stuttgart}, isbn = {978-3-8167-8707-5}, language = {de} } @article{Knoedler, author = {Kn{\"o}dler, Christoph}, title = {Zur Korrektur der Korrektur - die Berichtigung schriftlicher juristischer Pr{\"u}fungsarbeiten}, series = {Juristische Schulung - JuS}, journal = {Juristische Schulung - JuS}, number = {4}, publisher = {C.H. Beck}, address = {M{\"u}nchen}, pages = {365 -- 371}, language = {de} } @inproceedings{DeubzerHobelsbergerMottoketal., author = {Deubzer, Michael and Hobelsberger, Martin and Mottok, J{\"u}rgen and Schiller, Frank and Dumke, Reiner and Siegle, Markus and Margull, Ulrich and Niemetz, Michael and Wirrer, Gerhard}, title = {Modeling and Simulation of Embedded Real-Time Multi-Core Systems}, series = {Proceedings of the 3rd Embedded Software Engineering Congress, 7. bis 9. Dezember 2010, Sindelfingen}, booktitle = {Proceedings of the 3rd Embedded Software Engineering Congress, 7. bis 9. Dezember 2010, Sindelfingen}, language = {en} } @article{SchrammPieperVogl, author = {Schramm, Simon and Pieper, Matthias and Vogl, Stefanie}, title = {Orthogonal Procrustes and Machine Learning: Predicting Bill of Materials errors on time}, series = {Computers \& Industrial Engineering}, volume = {185}, journal = {Computers \& Industrial Engineering}, publisher = {Elsevier}, doi = {10.1016/j.cie.2023.109606}, abstract = {In an industrial product development process, the Bill of Materials (BOM) is a hierarchical, multi-level representation of all components, parts and quantities of a product. With increasing complexity of industrial products, also BOMs become more complex and thus prone to errors, for example when the individual parts of a product are changed during the product development process. Frequently, these Bill of Materials errors have to be identified manually or by using simple, rule-based schemes. In this paper, we provide a technical background of BOMs, showing the intricacy of temporal BOMs errors in an industrial product development process. The work of other authors, which focused on association mining and tree reconciliation to detect Bill of Materials errors, is analysed. We found that there is currently no system being able to prescribe where in a Bill of Materials and when in the product development process, errors are probable to occur. Also, Machine Learning (ML) methods have not been applied yet. Based on these findings, we formalize the notions Bill of Materials and Bill of Materials errors. Furthermore, we present a deterministic distance measure for BOMS. We provide an answer to the main question of how to represent a Bill of Materials for Machine Learning tasks by solving the orthogonal Procrustes problem for dynamic, hierarchical datasets. Then, we describe an isolation forest based approach to temporal anomaly detection, which points at potential errors in a Bill of Materials at a specific timestamp. Furthermore, we apply Machine Learning and present a multi-output Multi Layer Perceptron for the prediction of temporal Bill of Materials errors. The model predicts where and at which point of time Bill of Materials errors are probable to occur, which renders it a prescriptive system. Eventually, we optimize the performance of our model using contextualization via -means clustering. Finally, we apply our prescriptive pipeline to a real world dataset and show its superiority to existing methods using a qualitative comparison.}, language = {en} } @article{SchwabPogrebnojFreundetal., author = {Schwab, E. and Pogrebnoj, S. and Freund, M. and Flossmann, F. and Vogl, Stefanie and Frommolt, K.-H.}, title = {Automated bat call classification using deep convolutional neural networks}, series = {Bioacoustics}, journal = {Bioacoustics}, publisher = {Taylor \& Francis}, doi = {10.1080/09524622.2022.2050816}, pages = {1 -- 16}, abstract = {Identification of bats is most practically done by exploiting the characteristic features of their echolocation calls. This usually involves expert knowledge, expensive equipment and time-consuming post processing of previously recorded calls. Automated solutions exist, but are usually not as accurate as human experts. We present an automated solution for the processing of bat calls and identification of bat species with extremely high classification accuracy that can be used during live recording or in an automated post-processing software. Our algorithm is the first application of a Deep Convolutional Neural Network to classify bat species based on sound spectrogram images of their echolocation calls. We tested several deep CNN architectures including a modified Google Inception and a ResNet50 architecture. The nets were trained on a very large call database consisting of images of snippets of call spectrograms. All our software was developed in the Python programming language and an executable of the software is available on request.}, language = {en} } @unpublished{MenzelYehKammleretal., author = {Menzel, Andreas and Yeh, Wang-Chi Vincent and Kammler, Martin and Hupalo, Myron and Conrad, E. H. and Tringides, Michael C.}, title = {Measurements of the kinetic barriers controlling the formation of the uniform height islands in Pb/Si(111)}, abstract = {As demonstrated with SPA-LEED and STM uniform height islands of preferred thickness form during the growth of Pb on Si(111). The islands form at temperatures T<250K and for fluxes F 1/60ML/sec which requires fast kinetics and balance between several atomic processes: diffusion towards the islands , diffusion to higher layers and preference for the atoms to remain on top of the preferred height islands. We have carried out SPA-LEED experiments to measure the barriers of the processes: we prepare an initial predominantly 5-step island height distribution and we deposit an additional 0.5ML Pb at different growth temperatures Tg to determine the transition to the next preferred height of 7-step islands (i.e. 2-step islands on top of the 5-step islands) with Spot Profile Analysis(SPA-LEED). We observe that 7-step island formation is possible above a minimum temperature Tg*=175K which indicates that the transfer of atoms from the surrounding region to the top of the islands is the main controlling process.}, language = {en} } @unpublished{CavalleriSidersTothetal., author = {Cavalleri, Andrea and Siders, Craig and Toth, Csaba and Squier, Jeff A. and Barty, C. P. J. and Wilson, K. R. and Sokolowski-Tinten, Klaus and von der Linde, Dietrich and Kammler, Martin and Horn- von Hoegen, Michael}, title = {Measurement of harmonic and anharmonic semi-conductor-lattice dynamics with ultrafast x-ray diffraction}, abstract = {Many fundamental processes in solids, such as heat transport and phase transitions involve atomic movement on ultrafast time-scales, but cannot be directly measured with visible light. Using ultrafast x-ray diffraction, atomic motion can be measured on its natural time-scale. Photo-excitation of bulk and layered semiconductors was achieved with 800-nm wavelength femtosecond laser pulses. Optical excitation triggers a chain of relaxation processes, causing rapid lattice heating, generation and propagation of stress/strain waves into the bulk and eventual anharmonic decay of coherent acoustic phonons into the thermal bath of the solid. While the first steps of carrier relaxation, excitation and decay of Raman-active optical phonons have been in the past characterized optically at surfaces, the bulk acoustic dynamics at longer times has not. We measure length scales of lattice excitation, thereby detecting ultrafast heat diffusion via fast electrons, coherent acoustic pulse propagation into the bulk or across buried interfaces and anharmonic damping of non-equilibrium acoustic phonons. The measurement is performed with sensitivity on lattice spacing of 10 femtometers (i.e., 3 nuclear diameters).}, language = {en} } @incollection{NobreNosterGibmeieretal., author = {Nobre, J. P. and Noster, Ulf and Gibmeier, J. and Altenberger, Igor and Kornmeier, M. and Dias, A. and Scholtes, Berthold}, title = {Mechanical Behavior and Residual Stresses in AZ31 Wrought Magnesium Alloy Subjected to Four Point Bending}, series = {Magnesium Alloys and Their Applications}, booktitle = {Magnesium Alloys and Their Applications}, editor = {Kainer, Karl U.}, publisher = {Wiley}, address = {Hoboken}, isbn = {9783527607556}, doi = {10.1002/3527607552.ch53}, pages = {336 -- 341}, abstract = {Several specimens of AZ31 magnesium alloy were taken in different directions from a rolled plate and subjected to tensile, compressive and four-point bending tests. Tensile and compressive tests allowed to characterize the mechanical properties of the material in the rolling and cross rolling directions. The bending tests were carried out in four different specimen types to take the effect of the anisotropy induced by the rolling procedure itself into account. Six strain gages per specimen allowed to observe the evolution of the strain with the bending moment during the tests. All bending specimens were bent until a total compressive deformation of 2.5 \%. It was observed that the corresponding tensile strain was significant lower and slightly different for each specimen type. In addition, a characteristic non-uniform distribution of deformation twinning was observed. The induced residual stresses after bending were characterized by X-ray diffraction (XRD) and incremental hole-drilling (IHD). Due to the different mechanical behavior in tension and compression, an asymmetric residual stress distribution after bending could be observed. The neutral axis was, in all cases, shifted towards the tensile side. This observation agrees with the strain measurements during bending tests.}, language = {en} } @inproceedings{Westner, author = {Westner, Markus}, title = {Antecedents of success in IS offshoring projects}, series = {Proceedings of the 17th European Conference on Information Systems (ECIS 2009), Verona}, booktitle = {Proceedings of the 17th European Conference on Information Systems (ECIS 2009), Verona}, pages = {3104 -- 3116}, abstract = {The paper presents a research model and a measurement instrument for a research-in-progress study on the antecedents of success in IS offshoring projects. In this empirical-confirmatory study, we intend to analyse the impact of the constructs "offshoring expertise", "trust in offshore service provider", "project suitability", "knowledge transfer", and "liaison quality" on offshore project success. Constructs and indicators are derived from an extensive literature review. We plan to formulate a structural equation model and to test it using partial least squares (PLS) as an analysis technique. Our research model addresses the paucity of research that quantitatively examines offshoring success.}, subject = {Informationstechnik}, language = {en} } @book{Westner, author = {Westner, Markus}, title = {IS offshoring}, publisher = {Gabler}, address = {Wiesbaden}, isbn = {978-3-8349-2046-1}, doi = {10.1007/978-3-8349-8407-4}, abstract = {Information systems (IS) offshoring describes the transfer of IS services to an offshoring service provider in a near or far away country. It has received growing attention in the past and there is a strong momentum in shifting IS services abroad. Markus Westner examines the IS offshoring phenomenon from the perspective of German companies. He first provides an overview of the current literature in the field of IS offshoring. Based on interviews with 47 industry experts, evaluation criteria for selecting projects for offshoring are identified. Finally, the author examines determinants of IS offshore project success in German companies based on a statistical analysis of 304 projects using structural equation modeling (PLS).}, subject = {Informationssystem}, language = {en} } @techreport{Westner, type = {Working Paper}, author = {Westner, Markus}, title = {Information systems offshoring}, address = {Dresden}, subject = {Informationstechnik}, language = {en} } @incollection{Westner, author = {Westner, Markus}, title = {{\"U}bersicht {\"u}ber aktuelle Weblog-Skripte und -Services}, series = {Weblogs professionell : Grundlagen, Konzepte und Praxis im unternehmerischen Umfeld}, booktitle = {Weblogs professionell : Grundlagen, Konzepte und Praxis im unternehmerischen Umfeld}, editor = {Picot, Arnold and Fischer, Tim}, isbn = {978-3898643757}, pages = {175 -- 190}, subject = {Kommunikation}, language = {de} } @inproceedings{WestnerStrahringer, author = {Westner, Markus and Strahringer, Susanne}, title = {Current state of IS offshoring research}, series = {M{\"a}ki{\"o}, Juho; Betz, Stefanie; Stephan, Rolf (Eds.): Offshoring of software development. Methods and tools for risk management. Karlsruhe: Universit{\"a}tsverlag Karlsruhe}, booktitle = {M{\"a}ki{\"o}, Juho; Betz, Stefanie; Stephan, Rolf (Eds.): Offshoring of software development. Methods and tools for risk management. Karlsruhe: Universit{\"a}tsverlag Karlsruhe}, pages = {7 -- 22}, abstract = {This paper empirically examines the current state of the IS offshoring phenomenon in Germany regarding project characteristics and success patterns. Relying on a sample of 304 projects conducted at various industry sectors and companies, results show that IS offshoring primarily occurs in sectors Telecommunications and IT at large corporations. Cost reduction is the main reason for going offshore and offshore projects are executed as part of a larger program at companies. Noticeably, most projects are delivered from India. Additionally, neither captive offshoring nor offshore outsourcing dominates as a de-livery option. Comparing different project subgroups regarding project success, the results reveal that projects delivered by an internal or partially owned service provider are more successful. Other project characteristics such as a project's embedded-ness in a larger offshoring program, a project's size, or a project's offshoring degree in terms of relatively offshored labor hours show few significant differences. The paper addresses the paucity of empirical research on the current state of the IS offshoring phenomenon in Germany.}, subject = {Informationsmanagement}, language = {en} } @incollection{Weber, author = {Weber, Karsten}, title = {Bottom-Up Mixed-Reality: Emergente Entwicklung, Unkontrollierbarkeit und soziale Konsequenzen}, series = {Be-greifbare Interaktionen - Der allgegenw{\"a}rtige Computer: Touchscreens, Wearables, Tangibles und Ubiquitous Computing}, booktitle = {Be-greifbare Interaktionen - Der allgegenw{\"a}rtige Computer: Touchscreens, Wearables, Tangibles und Ubiquitous Computing}, editor = {Robben, B. and Schelhowe, H.}, publisher = {Transcript}, address = {Bielefeld}, doi = {10.14361/transcript.9783839420058.347}, pages = {347 -- 366}, language = {de} } @article{OrwatRaabeBuchmannetal., author = {Orwat, Carsten and Raabe, Oliver and Buchmann, Erik and Anandasivam, Arun and Freytag, Johan-Christoph and Helberger, Natali and Ishii, Kei and Lutterbeck, Bernd and Neumann, Dirk and Otter, Thomas and Pallas, Frank and Reussner, Ralf and Sester, Peter and Weber, Karsten and Werle, Raymund}, title = {Software als Institution und ihre Gestaltbarkeit}, series = {Informatik-Spektrum}, volume = {33}, journal = {Informatik-Spektrum}, number = {6}, doi = {10.1007/s00287-009-0404-z}, pages = {626 -- 633}, abstract = {Software regelt immer mehr zwischenmenschliche Interaktionen. {\"U}blicherweise werden die Funktionsmechanismen, Wirkungen und Gestaltungsoptionen von Regeln in der Institutionenforschung behandelt. In diesem Artikel soll beleuchtet werden, inwieweit sich Ans{\"a}tze der Institutionenforschung auf Software anwenden lassen und was sich aus dieser Forschungsperspektive zu den Regelungswirkungen und Gestaltungsoptionen von Software ableiten l{\"a}sst.}, language = {de} } @article{Weber, author = {Weber, Karsten}, title = {Information Ethics in a Different Voice, Or}, series = {IRIE - International Review of Information Ethics}, volume = {13}, journal = {IRIE - International Review of Information Ethics}, number = {1}, pages = {6 -- 11}, abstract = {Within the information ethics community one can observe a mainstream discussion including some fundamental presuppositions which appear to be something like dogmas. The most important of these dogmas seems to be that we must create a new kind of intercultural information ethics. It is often argued that (comparative) studies have shown that different cultures, according to culturally determined norms and values, react in different ways to the impacts of ICT; it is stressed that an intercultural information ethics must take these cultural particularities into account. But in the paper at hand it shall be argued that taking cultural differences into consideration does not create a necessity to invent a new intercultural information ethics. On the contrary it shall be claimed that we already know several intercultural ethics which only have to be applied to ICT and its impact to societies.}, language = {en} } @article{Weber, author = {Weber, Karsten}, title = {New Mobile Devices and Surveillance}, series = {Postmodern Openings Journal}, volume = {3}, journal = {Postmodern Openings Journal}, number = {3}, abstract = {Mobile devices help people to stay connected across huge distances and to socially interact while in spatially separated environments. However, compared to faceto-face-interaction, communication and interaction via mobile phones currently are still restricted. Therefore, an idea of Mann, Fung, and Lo concerning cyborglogging with camera phones shall be taken a step further. A scenario is described in which a modified version of their design is used to support social interaction across the borders of spatially separated environments in a new manner. It shall be argued that this might create a new understanding of being present at a certain place while at the same time it raises questions concerning privacy, surveillance and authenticity of experience.}, language = {en} } @article{WeberBittnerManzeschkeetal., author = {Weber, Karsten and Bittner, Uta and Manzeschke, Arne and Rother, Elisabeth and Quack, Fredericke and Dengler, Kathrin and Fangerau, Heiner}, title = {Taking Patient Privacy and Autonomy More Seriously}, series = {American Journal of Bioethics}, volume = {12}, journal = {American Journal of Bioethics}, number = {9}, doi = {10.1080/15265161.2012.699147}, pages = {51 -- 53}, language = {en} } @article{RoedigerWeber, author = {R{\"o}diger, Karl-Heinz and Weber, Karsten}, title = {und noch einmal: Was ist I\&G?}, series = {FIfF Kommunikation}, volume = {27}, journal = {FIfF Kommunikation}, number = {1}, pages = {7}, language = {de} } @article{WeberDrueeke, author = {Weber, Karsten and Dr{\"u}eke, Ricarda}, title = {Konvergente Medien, Fragmentierung der {\"O}ffentlichkeit und medienethische Anmerkungen}, series = {Zeitschrift f{\"u}r Kommunikations{\"o}kologie und Medienethik}, volume = {12}, journal = {Zeitschrift f{\"u}r Kommunikations{\"o}kologie und Medienethik}, number = {1}, pages = {1 -- 7}, language = {de} }