@techreport{20977, author = {{Schäfer, Wilhelm and Dziwok, Stefan and Pohlmann, Uwe and Bobolz, Jan and Czech, Mike and Dann, Andreas Peter and Geismann, Johannes and Hüwe, Marcus and Krieger, Arthur and Piskachev, Goran and Schubert, David and Wohlrab, Rebekka}}, title = {{{Seminar Theses of the Project Group Cybertron}}}, year = {{2015}}, } @techreport{20832, author = {{Schäfer, Wilhelm and Dziwok, Stefan and Pohlmann, Uwe and Bobolz, Jan and Czech, Mike and Dann, Andreas Peter and Geismann, Johannes and Hüwe, Marcus and Krieger, Arthur and Piskachev, Goran and Schubert, David and Wohlrab, Rebekka}}, title = {{{Seminar Theses of the Project Group Cybertron}}}, year = {{2015}}, } @inproceedings{21683, abstract = {{Purpose – This paper aims to present a methodology to help end-users to find appropriate part candidates for the use of the additive manufacturing (AM) technology. These shall be capable of bringing AM into their businesses. The concept furthermore includes approaches for redesigning current available parts and helps to estimate the economic implications of the use of the technology. Design/methodology/approach – The approach starts to discuss general economic aspects for the successful use of AM. While describing the introduction of new technologies into existing businesses, the importance of an appropriate part selection for AM is pointed out. A methodology for a part selection process is presented, and the different criteria are developed. An approach for a redesign of the selected parts, including the gathering of requirements, is given based on different sample parts. A variation of criteria to include measures for product piracy is highlighted. Findings – The methodology has proven applicability in several research and industry projects in aerospace applications. Independent part selections from experts analyzed within a project of the European Space Agency had a 90 per cent overlap with the results. It allows companies with only basic AM knowledge to start a part screening for applicable AM candidates in their own company with a reasonable effort. Originality/value – The methodology for the redesign process helps to identify the main functions of the products targeted and the relevant environment, so one can benefit from the various advantages that AM has to offer. The selection methodology helps to ask the right questions and to reduce the effort.}}, author = {{Lindemann, C. and Jahnke, U. and Reiher, T. and Koch, R.}}, booktitle = {{Rapid Prototyping Journal}}, isbn = {{1355-2546}}, number = {{2}}, pages = {{216--227}}, publisher = {{Emerald}}, title = {{{Towards a sustainable and economic selection of part candidates for Additive Manufacturing}}}, doi = {{https://doi.org/10.1108/RPJ-12-2014-0179}}, volume = {{21}}, year = {{2015}}, } @inproceedings{8068, author = {{Fazal-Baqaie, Masud and Raninen, Anu}}, booktitle = {{Industrial Proceedings of the 22nd European Systems Software & Service Process Improvement & Innovation Conference (EuroSPI²2015)}}, pages = {{5.1 -- 5.10}}, publisher = {{WHITEBOX, Denmark}}, title = {{{Successfully Initiating a Global Software Project}}}, year = {{2015}}, } @phdthesis{10293, author = {{Meier, Christian}}, title = {{{IT Project Portfolio Selection in the Presence of Project Interactions}}}, year = {{2015}}, } @misc{51269, abstract = {{Free networks are established and maintained by more and more people on a voluntary basis to be independent from commercial providers. This also enables an uncensored communication and leads to a network owned by a community. Freifunk is such a project and it is based on wireless mesh networks. All participants provide an own wifi router (node) for transferring data between different devices. The routing protocol used in the Freifunk network of Paderborn is called Better Approach To Mobile Ad-hoc Networking advanced (B.A.T.M.A.N. IV or Batman-adv). It uses so called Originator Messages (OGM) to announce the existence of a node and to measure the quality of different links in the network. The Freifunk network in Paderborn consists of about 800 nodes that periodically broadcast OGMs. This leads to a substantial base load of ∼25 GByte per month and node. Instead of performing modifications in the real network, I create a simulation model of the current network structure and implement version IV of the B.A.T.M.A.N. routing protocol. The model is validated by using data from the real network. Based on this model I propose and evaluate five different opportunities to improve the base load without impairing other functionality of the network. The simulation results show that a combination of two improvements can lead to a reduction up to 90 %.}}, author = {{Hardes, Tobias}}, title = {{{Performance Analysis and Simulation of a Freifunk Mesh Network in Paderborn using B.A.T.M.A.N Advanced}}}, year = {{2015}}, } @article{53768, author = {{Jankovic, Nicole and Geelen, Anouk and Streppel, Martinette T and de Groot, Lisette CPGM and Kiefte-de Jong, Jessica C and Orfanos, Philippos and Bamia, Christina and Trichopoulou, Antonia and Boffetta, Paolo and Bobak, Martin and Pikhart, Hynek and Kee, Frank and O’Doherty, Mark G and Buckland, Genevieve and Woodside, Jayne and Franco, Oscar H and Ikram, M Arfan and Struijk, Ellen A and Pajak, Andrzej and Malyutina, Sofia and Kubinova, Růžena and Wennberg, Maria and Park, Yikyung and Bueno-de-Mesquita, H Bas and Kampman, Ellen and Feskens, Edith J}}, issn = {{0002-9165}}, journal = {{The American Journal of Clinical Nutrition}}, number = {{4}}, pages = {{745--756}}, publisher = {{Elsevier BV}}, title = {{{WHO guidelines for a healthy diet and mortality from cardiovascular disease in European and American elderly: the CHANCES project}}}, doi = {{10.3945/ajcn.114.095117}}, volume = {{102}}, year = {{2015}}, } @techreport{42624, author = {{Fuchs, Christian and Bellanova, Rocco}}, title = {{{Updated Plan for Use and Foreground. Deliverable D5.3 of the EU FP7 project “PACT – Public Perception of Security and Privacy: Assessing Knowledge, Collecting Evidence, Translating Research into Action” (grant agreement number: 285635)}}}, year = {{2015}}, } @techreport{42630, author = {{Fuchs, Christian}}, title = {{{Validation Report. Deliverable D5.3 of the EU FP7 project “PACT – Public Perception of Security and Privacy: Assessing Knowledge, Collecting Evidence, Translating Research into Action” (grant agreement number: 285635)}}}, year = {{2015}}, } @inbook{29020, author = {{Lehmann, Jens and Athanasiou, Spiros and Both, Andreas and Garcia-Rojas, Alejandra and Giannopoulos, Giorgos and Hladky, Daniel and Hoeffner, Konrad and Jay Le Grange, Jon and Ngonga Ngomo, Axel-Cyrille and Sherif, Mohamed and Stadler, Claus and Wauer, Matthias and Westphal, Patrick and Zaslawski, Vadim}}, booktitle = {{The Semantic Web in Earth and Space Science. Current Status and Future Directions}}, keywords = {{2015 group\_aksw sys:relevantFor:infai sys:relevantFor:bis sys:relevantFor:geoknow lehmann ngonga MOLE sherif simba dice hoeffner geoknow wauer westphal}}, pages = {{51–78}}, publisher = {{IOS Press}}, title = {{{Managing Geospatial Linked Data in the GeoKnow Project}}}, doi = {{ 10.3233/978-1-61499-501-2-51}}, volume = {{ Volume 20}}, year = {{2015}}, } @inproceedings{1773, author = {{Schumacher, Jörn and T. Anderson, J. and Borga, A. and Boterenbrood, H. and Chen, H. and Chen, K. and Drake, G. and Francis, D. and Gorini, B. and Lanni, F. and Lehmann-Miotto, Giovanna and Levinson, L. and Narevicius, J. and Plessl, Christian and Roich, A. and Ryu, S. and P. Schreuder, F. and Vandelli, Wainer and Vermeulen, J. and Zhang, J.}}, booktitle = {{Proc. Int. Conf. on Distributed Event-Based Systems (DEBS)}}, publisher = {{ACM}}, title = {{{Improving Packet Processing Performance in the ATLAS FELIX Project – Analysis and Optimization of a Memory-Bounded Algorithm}}}, doi = {{10.1145/2675743.2771824}}, year = {{2015}}, } @inbook{35491, abstract = {{Im Hinblick auf die Verbesserung der Lehrerbildung besteht ein hohes Interesse daran, die Struktur und Genese der Kompetenzen von Lehramtsstudierenden zu beschreiben. Die Ziele des vorgestellten Projekts liegen in der Modellierung und Messung domänenspezifischer und generischer Kompetenzen, die Lehramtsstudierende der Physik im Hochschulstudium erwerben sollen. Das Modell umfasst differenzierte Facetten des physikalischen Fachwissens und des physikdidaktischen Wissens sowie das fachspezifische Erklärungswissen in unterrichtsnahen Vermittlungssituationen. Es enthält zudem Annahmen über Zusammenhänge dieser Bereiche des Professionswissens. Ausgehend vom Modell wurden schriftliche Testinstrumente und videografierte Lehr-Lern-Rollenspiele entwickelt und bei Physik-Lehramtsstudierenden eingesetzt. Die Ergebnisse sprechen für die Validität der genutzten Testverfahren. (DIPF/Orig.)}}, author = {{Riese, Josef and Kulgemeyer, Christoph and Zander, Simon and Borowski, Andreas and Fischer, Hans E. and Gramzow, Yvonne and Reinhold, Peter and Schecker, Horst and Tomczyszyn, Elisabeth}}, booktitle = {{Kompetenzen von Studierenden: 61. Beiheft der Zeitschrift für Pädagogik}}, editor = {{Blömeke, Sigrid and Zlatkin-Troitschanskaia, Olga}}, pages = {{55--79}}, publisher = {{Belz}}, title = {{{Modellierung und Messung des Professionswissens in der Lehramtsausbildung Physik}}}, doi = {{10.25656/01:15503}}, year = {{2015}}, } @inproceedings{25596, author = {{Gutfeld, Thomas and Jessen, Ulrich and Wenzel, Sigrid and Laroque, Christoph and Weber, Jens}}, booktitle = {{Proceedings of the 2014 Winter Simulation Conference}}, editor = {{Tolk, A and Diallo, S. Y and Ryzhov, I. O and Yilmaz, L and Buckley, S and Miller, J. A}}, publisher = {{IEEE}}, title = {{{A Technical Concept for Plant Engineering by Simulation-Based and Logistic-Integrated Project Management}}}, year = {{2014}}, } @article{2629, author = {{Heinrich, B. and Kundisch, Dennis and Zimmermann, Steffen}}, journal = {{BIT - Banking and Information Technology}}, number = {{2}}, pages = {{8--20}}, title = {{{Analyzing Cost and Risk Interaction Effects in IT Project Portfolios}}}, volume = {{15}}, year = {{2014}}, } @inproceedings{1140, abstract = {{Customized planning, engineering and build-up of factory plants are very complex tasks, where project management contains lots of risks and uncertainties. Existing simulation techniques could help massively to evaluate these uncertainties and achieve improved and at least more robust plans during project management, but are typically not applied in industry, especially at SMEs (small and medium-sized enterprises). This paper presents some results of the joint research project simject of the Universities of Paderborn and Kassel, which aims at the development of a demonstrator for a simulation-based and logistic-integrated project planning and scheduling. Based on the researched state-of-the-art, requirements and a planning process are derived and described, as well as a draft of the current technical infrastructure of the intended modular prototype. First plug-ins for project simulation and multi-project optimization are implemented and already show possible benefits for the project management process.}}, author = {{Gutfeld, Thomas and Jessen, Ulrich and Wenzel, Sigrid and Weber, Jens}}, booktitle = {{Proceedings of the 2014 Winter Simulation Conference}}, editor = {{Tolk, Andreas and Diallo, Saikou Y. and Ryzhov, Ilya O. and Yilmaz, Levent and Buckley, Stephen J. and Miller, John A.}}, isbn = {{9781479974863}}, location = {{Savannah, GA, USA}}, pages = {{3423--3434}}, publisher = {{IEEE Press}}, title = {{{A Technical Concept for Plant Engineering by Simulation-Based and Logistic-Integrated Project Management}}}, doi = {{10.1109/WSC.2014.7020175}}, year = {{2014}}, } @article{22384, abstract = {{Additive Manufacturing technologies create parts layer by layer. Thereby, lots of benefits are offered. Especially extended design freedoms provide new potentials for the design of technical parts. To make these benefits accessible to different user groups, design rules for Additive Manufacturing were developed within the project ‘‘Direct Manufacturing Design Rules’’. Therefore a process independent method was defined first. Next, design rules were developed for Laser Sintering, Laser Melting and Fused Deposition Modeling. The results were summarized in a design rule catalog and support a suitable design for Additive Manufacturing }}, author = {{Adam, Guido and Zimmer, Detmar}}, journal = {{CIRP Journal of Manufacturing Science and Technology}}, number = {{1}}, pages = {{20--28}}, title = {{{Design for Additive Manufacturing - Element transitions and aggregated structures}}}, doi = {{10.1016/j.cirpj.2013.10.001 }}, volume = {{7}}, year = {{2014}}, } @inproceedings{8065, abstract = {{Software engineering methods are used to prescribe and coordinate the tasks necessary to plan, build, deliver, and maintain software. There is a broad consensus that there is no one-size-fits-all method and that, e.g., agile and plan-driven approaches have to be mixed sometimes, based on the context of a project. Creating these so-called situational methods and assuring that they cover all necessary details consistently is a challenge. There is also the challenge for the project teams to follow methods as prescribed by the method engineer. Our approach supports the creation of consistent situational methods from a repository of pre-existing building blocks. Moreover, we present means to enact these methods with standard BPEL/BPEL4People workflow engines, automating the coordination of tasks and providing guidance for them.}}, author = {{Fazal-Baqaie, Masud and Gerth, Christian and Engels, Gregor}}, booktitle = {{In Proceedings of the 15th International Conference of Product Focused Software Development and Process Improvement (PROFES 2014)}}, pages = {{281--284}}, publisher = {{Springer}}, title = {{{Breathing Life into Situational Software Engineering Methods}}}, volume = {{8892}}, year = {{2014}}, } @inproceedings{9895, abstract = {{Power semiconductor modules are used to control and switch high electrical currents and voltages. Within the power module package wire bonding is used as an interconnection technology. In recent years, aluminum wire has been used preferably, but an ever-growing market of powerful and efficient power modules requires a material with better mechanical and electrical properties. For this reason, a technology change from aluminum to copper is indispensable. However, the copper wire bonding process reacts more sensitive to parameter changes. This makes manufacturing reliable copper bond connections a challenging task. The aim of the BMBF funded project Itsowl-InCuB is the development of self-optimizing techniques to enable the reliable production of copper bond connections under varying conditions. A model of the process is essential to achieve this aim. This model needs to include the dynamic elasto-plastic deformation, the ultrasonic softening effect and the proceeding adhesion between wire and substrate. This paper focusses on the pre-deformation process. In the touchdown phase, the wire is pressed into the V-groove of the tool and a small initial contact area between wire and substrate arise. The local characteristics of the material change abruptly because of the cold forming. Consequently, the pre-deformation has a strong effect on the joining process. In [1], a pre-cleaning effect during the touchdown process of aluminum wires by cracking of oxide layers was presented. These interactions of the process parameters are still largely unknown for copper. In a first step, this paper validates the importance of modeling the pre-deformation by showing its impact on the wire deformation characteristic experimentally. Creating cross-section views of pre-deformed copper wires has shown a low deformation degree compared to aluminum. By using a digital microscope and a scanning confocal microscope an analysis about the contact areas and penetration depths after touchdown has been made. Additionally, it has to be taken into account that the dynamical touchdown force depends on the touchdown speed and the touchdown force set in the bonding machine. In order to measure the overshoot in the force signals, a strain gauge sensor has been used. Subsequently, the affecting factors have been interpreted independently Furthermore, the material properties of copper wire have been investigated with tensile tests and hardness measurements. In a second step, the paper presents finite element models of the touchdown process for source and destination bonds. These models take the measured overshoot in the touchdown forces into account. A multi-linear, isotropic material model has been selected to map the material properties of the copper. A validation of the model with the experimental determined contact areas, normal pressures and penetration depths reveals the high model quality. Thus, the simulation is able to calculate and visualize the three dimensional pre-deformation with an integrated material parameter of the wire if the touchdown parameters of the bonding machine are known. Based on the calculated deformation degrees of wire and substrate, it is probably possible to investigate the effect of the pre-deformation on the pre-cleaning phase in the copper wire bonding.}}, author = {{Unger, Andreas and Sextro, Walter and Althoff, Simon and Eichwald, Paul and Meyer, Tobias and Eacock, Florian and Brökelmann, Michael}}, booktitle = {{Proceedings of the 47th International Symposium on Microelectronics (IMAPS)}}, keywords = {{pre-deformation, copper wire bonding, finite element model}}, pages = {{289--294}}, title = {{{Experimental and Numerical Simulation Study of Pre-Deformed Heavy Copper Wire Wedge Bonds}}}, year = {{2014}}, } @article{13304, abstract = {{A primary problem in multimedia content production is the plethora of formats and the resulting multiple point-to-point transformation processes in different content formatting specifications. However, these content transformation processes can be conceptually broken down into a limited set of abstract principles. This allows a unified approach that theoretically enables the transformation of any given input channel into any desired output. Based on this principle, the present article introduces the concept of Generic Content Transformation and the related project MOCCA, which develops the corresponding software implementation of generic content transformation for a variety of input and output channels. To balance technical similarities with specific properties of different media channels, we suggest a combination of an XML-based structure (MocML) and a high level authoring environment. Generic Content Transformation further allows for novel means of accessing assets via compound search algorithms. In the second part we summarize and discuss current results and experiences in three scenarios of media production, including mobile media.}}, author = {{Herzog, Michael and Trier, Matthias}}, issn = {{2312-5381}}, journal = {{International Journal of Computing}}, keywords = {{Multimedia Authoring, Mobile Content, Cross Media Production, Content Engineering, Media Retrieval}}, number = {{2}}, pages = {{108--115}}, title = {{{MEDIA ENGINEERING WITH A CONTENT HUB SYSTEM. GENERIC CONTENT TRANSFORMATION FOR MOBILE MEDIA}}}, volume = {{7}}, year = {{2014}}, } @inproceedings{35994, author = {{Laubenstein, Désirée and Scheer, D.}}, location = {{Budapest}}, title = {{{An inclusive school system in Rhineland-Palatinate? Results of a research project and their relevance for international research on inclusive education.}}}, year = {{2014}}, }