TY - CONF AU - S. Lichte, Hermann AU - Valentin, Stefan AU - von Malm, Holger AU - Karl, Holger AU - Bin Sediq, Akram AU - Aad, Imad ID - 817 T2 - Proceedings of IEEE International Conference on Communications, ICC 2009, Dresden, Germany, 14-18 June 2009 TI - Rate-Per-Link Adaptation in Cooperative Wireless Networks with Multi-Rate Combining ER - TY - CONF AU - Birkenheuer, Georg AU - Brinkmann, Andre AU - Karl, Holger ID - 818 T2 - Job Scheduling Strategies for Parallel Processing, 14th International Workshop, JSSPP 2009, Rome, Italy, May 29, 2009. Revised Papers TI - The Gain of Overbooking ER - TY - CONF AU - Simon Lichte, Hermann AU - Valentin, Stefan AU - Karl, Holger AU - Aad, Imad AU - Widmer, J. ID - 819 T2 - Proceedings of the 12th International Symposium on Modeling Analysis and Simulation of Wireless and Mobile Systems, MSWiM 2009, Tenerife, Canary Islands, Spain, October 26-19, 2009 TI - Analyzing space/capacity tradeoffs of cooperative wireless networks using a probabilistic model of interference ER - TY - CONF AU - Biermann, Thorsten AU - Schwabe, Arne AU - Karl, Holger ID - 820 T2 - NETWORKING 2009, 8th International IFIP-TC 6 Networking Conference, Aachen, Germany, May 11-15, 2009. Proceedings TI - Creating Butterflies in the Core - A Network Coding Extension for MPLS/RSVP-TE ER - TY - CONF AU - Lischka, Jens AU - Karl, Holger ID - 821 T2 - Proceedings of the 1st ACM SIGCOMM Workshop on Virtualized Infrastructure Systems and Architectures, VISA 2009, Barcelona, Spain, August 17, 2009 TI - A virtual network mapping algorithm based on subgraph isomorphism detection ER - TY - GEN AU - Gehrke, Matthias AU - Güldali, Baris AU - Meyer, Jan AU - Sancar, Yavuz AU - Spijkerman, Michael ID - 8217 TI - “Metriken” – Kennzahlen zur Verbesserung der Softwarequalität, Teile 1 und 2 ER - TY - GEN AU - Gehrke, Matthias AU - Güldali, Baris AU - Meyer, Jan AU - Sancar, Yavuz AU - Spijkerman, Michael ID - 8218 TI - "Metriken" - Kennzahlen zur Verbesserung der Softwarequalität, Teile 1 und 2 ER - TY - JOUR AU - Krauter, Stefan AU - Grunow, Paul ID - 8319 IS - 1 JF - Photovoltaics International TI - PV module characterization VL - 4 ER - TY - GEN ED - Krauter, Stefan ID - 8320 SN - 978-85-62366-01-7 TI - Book of Proceedings of RIO 9 – World Climate & Energy Event ER - TY - BOOK AB - The increasing employment of information and communication technologies in companies and households has led to considerable changes in the way services are conceived, developed, and delivered. Nancy V. Wünderlich employs a multi-method approach comprising an international qualitative study in Germany, USA and China and a longitudinal quantitative study to analyze remote services. She develops the Interactive Technology-Mediated Service Model (ITSUM) to provide a comprehensive approach of explaining both initial acceptance and repeated, continued usage of remote services in organizations. Finally, she derives managerial implications for remote service providers on how to increase remote service acceptance among their customers and facilitate the export of remote services. AU - Wünderlich, Nancy ID - 5721 SN - 978-3-8349-1957-1 TI - Acceptance of Remote Services – Perception, Adoption, and Continued Usage in Organizational Settings ER - TY - GEN AU - Yigitbas, Enes ID - 5761 TI - Evaluierung von Bewertungsmodellen für den Testprozess ER - TY - GEN AU - Kabst, Rüdiger AU - Thost, W AU - Isidor, R ID - 6114 TI - Vorteil Interim Management VL - 2 ER - TY - GEN AU - Kabst, Rüdiger AU - Isidor, R AU - Thost, W AU - Linné, H ID - 6115 TI - Was zeichnet den erfolgreichen Interim Manager aus? VL - 3 ER - TY - GEN AU - Kabst, Rüdiger AU - Isidor, R AU - Thost, W AU - Nagel, R ID - 6116 TI - Manager auf Zeit: Ignoriert oder akzeptiert? VL - 6 ER - TY - GEN AU - Kabst, Rüdiger AU - Salow, S AU - Baum, M ID - 6117 TI - International Fachkräfte gewinnen VL - 4 ER - TY - GEN AU - Kabst, Rüdiger ID - 6118 TI - Editorial: Motivieren trotz Krise VL - 6 ER - TY - GEN AU - Kabst, Rüdiger ID - 6119 TI - Editorial: Zukunft sichern VL - 3 ER - TY - BOOK AU - Kabst, Rüdiger AU - Giardini, A AU - Wehner, M C ID - 6137 SN - 3866183240 TI - International komparatives Personalmanagement: Evidenz, Methodik & Klassiker des "Cranfield Projects on International Human Resource Management" ER - TY - CHAP AU - Kabst, Rüdiger AU - Giardini, A ED - Scholz, C ID - 6160 T2 - Vahlens großes Personal Lexikon TI - Ausgewählte Stichwörter zum internationalen Personalmanagement ER - TY - CHAP AU - Kabst, Rüdiger AU - Giardini, A AU - Wehner, M C ED - Kabst, Rüdiger ID - 6161 T2 - International komparatives Personalmanagement: Evidenz, Methodik & Klassiker des “Cranfield Projects on International Human Resource Management” TI - Das Cranfield Project on International Strategic Human Resource Management: Eine Einführung ER - TY - CHAP AU - Schwens, C AU - Kabst, Rüdiger ED - Moser, R ID - 6162 T2 - Internationale Unternehmensführung - Entscheidungsfelder und politische Aspekte. TI - Das Lernverhalten früh internationalisierender Unternehmen: ein konzeptioneller Analyserahmen. ER - TY - CHAP AU - Kabst, Rüdiger AU - Giardini, A ED - Kabst, Rüdiger ID - 6163 T2 - International komparatives Personalmanagement: Evidenz, Methodik & Klassiker des “Cranfield Projects on International Human Resource Management” TI - Die deutsche Cranet-Erhebung 2005: Empirische Befunde und Ergebnisbericht ER - TY - CONF AU - Baum, M AU - Schwens, C AU - Kabst, Rüdiger ID - 6328 TI - A typology of international new ventures: Empirical evidence from high technology industries. ER - TY - CONF AU - Zapkau, F B AU - Steinmetz, Holger AU - Schwens, C AU - Kabst, Rüdiger ID - 6329 TI - Determinanten der Gründungsintention – Eine empirische Analyse unter Einbeziehung der Theory of Planned Behaviour [Determinants of the founding intention – An empirical analysis based on the theory of planned behavior] ER - TY - CONF AU - Baum, M AU - Kabst, Rüdiger ID - 6336 TI - Employer image and the intention to apply: A cross-national analysis ER - TY - CONF AU - Isidor, R AU - Steinmetz, Holger AU - Schwens, C AU - Kabst, Rüdiger ID - 6342 TI - International Joint Venture Performance: ER - TY - CONF AU - Zapkau, F B AU - Schwens, C AU - Kabst, Rüdiger ID - 6346 TI - The effects of FDI on employment within the domestic market: The moderating role of ownership structures ER - TY - CONF AU - Baum, M AU - Schwens, C AU - Kabst, Rüdiger ID - 6347 TI - The interplay of knowledge intensity, international networks and experience on the type of international new venturing ER - TY - CONF AU - Zapkau, F B AU - Steinmetz, Holger AU - Schwens, C AU - Kabst, Rüdiger ID - 6357 TI - Determinanten der Gründungsintention – Eine empirische Analyse unter Einbeziehung der Theory of Planned Behaviour [Determinants of the founding intention – An empirical analysis based on the theory of planned behavior] ER - TY - CONF AU - Baum, M AU - Kabst, Rüdiger ID - 6358 TI - Employer image and the intention to apply: A cross-national analysis ER - TY - CONF AU - Isidor, R AU - Steinmetz, Holger AU - Schwens, C AU - Kabst, Rüdiger ID - 6360 TI - International Joint Venture Performance: A Meta-Analytical Structural Equation Model ER - TY - CONF AU - Zapkau, F B AU - Schwens, C AU - Kabst, Rüdiger ID - 6361 TI - The effects of FDI on employment within the domestic market: The moderating role of ownership structures ER - TY - CONF AU - Baum, M AU - Schwens, C AU - Kabst, Rüdiger ID - 6362 TI - The interplay of knowledge intensity, international networks and experience on the type of international new venturing ER - TY - GEN AU - Jenert, Tobias AU - Zellweger, Franziska AU - Dommen, Jenny AU - Gebhardt, Anja ID - 4450 KW - Lernkultur KW - Hochschule KW - HEI KW - learning culture KW - higher education KW - teaching and learning KW - Hochschullehre TI - Lernkulturen an Hochschulen: Theoretische Überlegungen zur Betrachtung studentischen Lernens unter individueller, pädagogischer und organisationaler Perspektive ER - TY - CHAP AU - Jenert, Tobias AU - Zellweger , Franziska AU - Meier, Christoph ID - 4522 SN - 978-3-8309-2199-8 T2 - E-Learning 2009 - Lernen im Digitalen Zeitalter TI - Prüfungskulturgestalten?!: Prozess- und Qualitätsunterstützung schriftlicher Prüfungen an Hochschulen durch eine Web-Applikation VL - 51 ER - TY - JOUR AB - We present results on ferroelectric micro-domains obtained by confocal second harmonic microscopy. The high potential of this technique is demonstrated by imaging periodic ferroelectric domain structures in the surface of planar X-cut lithium niobate (LN) and in the body of ridges fabricated by plasma etching on X-cut LN as well. In both cases the measured second harmonic signal reveals a strong contrast between inverted and non-inverted domain sections. This enabled a depth-resolved non-destructive tomography of micro-domains in ridge structures in all three dimensions. AU - Berth, Gerhard AU - Wiedemeier, Volker AU - Hüsch, Klaus-Peter AU - Gui, Li AU - Hu, Hui AU - Sohler, Wolfgang AU - Zrenner, Artur ID - 4553 IS - 1 JF - Ferroelectrics KW - Nonlinear microscopy KW - ferroelectric micro-domains KW - confocal imaging KW - LiNbO3 SN - 0015-0193 TI - Imaging of Ferroelectric Micro-Domains in X-Cut Lithium Niobate by Confocal Second Harmonic Microscopy VL - 389 ER - TY - JOUR AU - Feng, Yuanhua AU - Heiler, Siegfried ID - 4608 IS - 12 JF - Journal of Statistical Computation and Simulation SN - 0094-9655 TI - A simple bootstrap bandwidth selector for local polynomial fitting VL - 79 ER - TY - JOUR AU - Beran, Jan AU - Feng, Yuanhua AU - Heiler, Siegfried ID - 4622 IS - 5 JF - Statistical Methodology SN - 1572-3127 TI - Modifying the double smoothing bandwidth selector in nonparametric regression VL - 6 ER - TY - JOUR AU - Becker, Jörg AU - Beverungen, Daniel AU - Knackstedt, Ralf AU - Müller, Oliver ID - 4710 IS - 1 JF - Enterprise Modelling and Information Systems Architectures TI - Model-Based Decision Support for the Customer-Specific Configuration of Value Bundles ER - TY - JOUR AU - Eggert, Andreas AU - Ulaga, Wolfgang AU - Hollmann, Sabine ID - 4860 IS - 3/4 JF - Journal of Business & Industrial Marketing TI - Benchmarking the impact of customer share in key-supplier relationships ER - TY - JOUR AU - Fahr, Ren{\'e} AU - Sunde, Uwe ID - 4883 IS - 3 JF - German economic review TI - Did the Hartz Reforms speed-up the matching process? A macro-evaluation using empirical matching functions ER - TY - JOUR AU - Fahr, Rene AU - Sunde, Uwe ID - 4884 IS - 9 JF - Applied Economics Letters TI - Gender differentials in skill use and skill formation in the aftermath of vocational training ER - TY - CHAP AU - Helm, Sabrina AU - Eggert, Andreas AU - Garnefeld, Ina ID - 4961 SN - 9783540328254 T2 - Handbook of Partial Least Squares TI - Modeling the Impact of Corporate Reputation on Customer Satisfaction and Loyalty Using Partial Least Squares ER - TY - JOUR AU - Alewell, Dorothea AU - Hauff, Sven AU - Thommes, Kirsten AU - Weiland, Katrin ID - 4975 IS - 7 JF - The International Journal of Human Resource Management TI - Triggers of HR outsourcing decisions--an empirical analysis of German firms ER - TY - BOOK ED - Kremer, H.-Hugo ED - Sloane, Peter F. E. ID - 7002 TI - Paderborner Forschungs- und Entwicklungswerkstatt - Forschungsfragen und -konzepte der beruflichen Bildung VL - Band 2 ER - TY - BOOK ED - Dehmel, A. ED - Kremer, H.-Hugo ED - Schaper, N. ED - Sloane, Peter F. E. ID - 7003 TI - Bildungsperspektiven in alternden Gesellschaften ER - TY - JOUR AU - Kremer, H.-Hugo AU - Tramm, T. AU - Siemon, J. ID - 7004 IS - 17 JF - bwp@ Berufs- und Wirtschaftspädagogik - online TI - Praxisphasen in beruflichen Entwicklungsprozessen ER - TY - CHAP AU - Kremer, H.-Hugo AU - Gockel, C. ED - Tramm, T. ED - Kremer, H.-Hugo ED - Dilger, B. ID - 7058 T2 - bwp@ Ausgabe 17, Praxisphasen in beruflichen Entwicklungsprozessen TI - Schülerbetriebspraktikum im Übergangssystem - Relevanz, Potenziale und Gestaltungsanforderungen ER - TY - JOUR AU - Engels, Gregor ID - 7365 IS - 1 JF - Software & Systems Modeling SN - 1619-1366 TI - Guest Editorial to the Special Section on MODELS 2007 VL - 9 ER - TY - JOUR AU - Spijkerman, Michael AU - Eckardt, Tobias ID - 7366 IS - 4 JF - Softwaretechnik-Trends TI - Modellbasiertes Testen auf Basis des fundamentalen Testprozesses VL - 29 ER - TY - JOUR AU - Sauer, Stefan AU - Engels, Gregor AU - Willkomm, Johannes AU - Baumann, Andrea AU - Hofmann, Alexander ID - 7367 JF - Advances in Enterprise Engineering II TI - A Holistic Software Engineering Method for Service-Oriented Application Landscape Development ER - TY - JOUR AU - Engels, Gregor AU - Goedicke, Michael AU - Goltz, Ursula AU - Rausch, Andreas AU - Reussner, Ralf ID - 7368 IS - 5 JF - Informatik-Spektrum SN - 0170-6012 TI - Design for Future – Legacy-Probleme von morgen vermeidbar? VL - 32 ER - TY - CHAP AU - Helm, S AU - Eggert, A AU - Garnefeld, I ED - Esposito Vinzi, V ED - Chin, W ED - Henseler, J ED - Wang, H ID - 7441 T2 - Handbook of Partial Least Squares - Concepts, Methods and Applications TI - Modelling the Impact of Corporate Reputation on Customer Satisfaction and Loyalty Using PLS ER - TY - JOUR AU - Mehta, M. AU - Ruth, M. AU - Piegdon, K. A. AU - Krix, D. AU - Nienhaus, H. AU - Meier, Cedrik ID - 7497 IS - 5 JF - Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures SN - 1071-1023 TI - Inductively coupled plasma reactive ion etching of bulk ZnO single crystal and molecular beam epitaxy grown ZnO films VL - 27 ER - TY - JOUR AU - Lei, Wen AU - Notthoff, Christian AU - Offer, Matthias AU - Meier, Cedrik AU - Lorke, Axel AU - Jagadish, Chennupati AU - Wieck, Andreas D. ID - 7498 IS - 07 JF - Journal of Materials Research SN - 0884-2914 TI - Electron energy structure of self-assembled In(Ga)As nanostructures probed by capacitance-voltage spectroscopy and one-dimensional numerical simulation VL - 24 ER - TY - JOUR AU - Huba, K. AU - Krix, D. AU - Meier, Cedrik AU - Nienhaus, H. ID - 7499 IS - 4 JF - Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films SN - 0734-2101 TI - Ultrathin K∕p-Si(001) Schottky diodes as detectors of chemically generated hot charge carriers VL - 27 ER - TY - THES AB - The Model Quality Plan (MQP) approach provided by us allows for the systematic and efficient development of quality plans that serve as a basis for the assessment of software models. MQP emphasizes the context of a software model as a major factor of influence for the whole quality planning activity. In order to adjust a quality plan to project specific requirements, quality goals are derived from a characterization of that context. We achieve a differentiated description of quality goals by introducing structured goals and questions in combination with a defined quality model. Afterwards, metrics and indicators are identified for checking the fulfillment of the quality goals. The result of our approach consists of a context sensitive quality plan for software models. Conceptually, we combine a metamodel for formulating relevant contents, a process that serves as a guideline for defining quality plans, and a rule concept for packaging and reusing experience into an integrated framework. We show its feasibility by three case studies that include a quality plan for analysis models, design models, and test models, respectively. For that, we provide tool support for the definition and application of quality plans. AU - Voigt, Hendrik ID - 7574 TI - Kontextsensitive Qualitätsplanung von Softwaremodellen ER - TY - THES AU - Schattkowsky, Tim ID - 7575 TI - Platform independent modeling of synthesizable software systems using UML 2 ER - TY - THES AU - Förster, Alexander ID - 7577 TI - Pattern based business process design and verification ER - TY - THES AB - Enterprise Architecture (EA) has undergone many changes since the IT has found its way into the world of enterprises. The introduction of Service-Oriented Architecture (SOA) is such a change with major consequences. The introduction of an SOA increases the flexibility and thus the productivity of an enterprise architecture, but unfortunately also its complexity. This makes the transformation of an enterprise architecture to an SOA-like enterprise architecture to a challenging and risky task. To overcome the change- and complexity-related problems when introducing SOA, Enterprise Architecture Management (EAM) systems are required. The approach of this thesis suggests a method on how to establish Enterprise Architecture Management that is especially suited for an SOA introduction. This thesis suggests a variant of an EAM system that is especially suited for the introduction of an SOA. The presented method on creating such an EAM system includes guidance on how to define a meta model for Service-Oriented Enterprise Architecture (SOEA), which is harmonized with the respective enterprise architecture. The SOA introduction is especially supported by defining SOA quality criteria and corresponding metrics. Some metrics have to be ascertained by experts. Other metrics have their measuring points within the SOEA models (instances of the SOEA meta model) and their calculation is automatable. Creating and maintaining SOEA models as well as applying the automatable metrics are supported by an eclipse-based tool. As metrics only produce measures that are hard to interpret, indicators are introduced. They allow interpreting the measures concerning the quality criteria. With the help of this EAM system, the transformation of an enterprise to a service-oriented enterprise can be planned and the level of goal-achievement (SOA-conformance of the EA) can be monitored steadily. By this, the contribution of this work aims at the reduction of the risk when introducing an SOA. AU - Assmann, Martin ID - 7578 TI - Model-based evaluation of service-oriented enterprise architectures ER - TY - JOUR AU - Ertl, H. AU - Kremer, H.-Hugo ID - 7605 IS - 87 JF - SKOPE TI - Innovation and Reform in College-based VET Contexts: An outline of research in England and Germany ER - TY - JOUR AU - Kissel, J. AU - Hanitsch, Rolf AU - Krauter, Stefan ID - 8349 IS - 9/September 2009 JF - Energy Policy TI - Cornerstones of a renewable energy law for emerging markets in South America VL - 37 ER - TY - CONF AU - Preiss, A. AU - Krauter, Stefan ID - 8350 T2 - Proceedings of the 24th European Photovoltaic Solar Energy Conference and Exhibition, Hamburg (Deutschland), 21.–25. September 2009, S. 2846–2849 TI - Yield prediction and comparison of a-Si modules ER - TY - CONF AU - Mlynarski, Michael AU - Güldali, Baris AU - Späth, Melanie AU - Engels, Gregor ID - 8431 T2 - MoDeVVa '09: Proceedings of the 6th International Workshop on Model-Driven Engineering, Verification and Validation TI - From Design Models to Test Models by Means of Test Ideas ER - TY - CONF AU - Engels, Gregor ID - 8432 T2 - First European Workshop on Behaviour Modelling in Model Driven Architecture (BM-MDA) TI - Automatic Generation of Behavioral Code - too ambitious or even unwanted? ER - TY - CONF AU - Salger, Frank AU - Engels, Gregor AU - Hofmann, Alexander ID - 8433 T2 - Proceedings of the ICSE Workshop on Software Quality (WoSQ 2009) TI - Inspection Effectiveness for Different Quality Attributes of Software Requirement Specifications - An Industrial Case Study ER - TY - CONF AB - The software specification acts as a bridge between customers, architects, software developers and testers. If information gets lost or distorted when building this bridge, the wrong system will be built or the system will not be built in time and budget–or both! Standards and recommendations give advice on how to structure specifications or check software-engineering artefacts with reviews or inspections. But these constructive and analytical approaches are not well integrated with each other. Moreover, they are often too generic to efficiently support the specification of particular system types. In this paper, we present the integrated “specification framework” of Capgemini sd&m. It consists of our specification method for business information systems (BIS) and its concerted analytical counterpart, the “specification quality gate”. Since this framework is tailored to the specification of large BIS, it allows a quick ramp-up phase for software engineering projects without the need for extensive tailoring or extension. AU - Salger, Frank AU - Sauer, Stefan AU - Engels, Gregor ID - 8434 T2 - Proceedings of the Forum at the CAiSE 2009 Conference, Amsterdam (The Netherlands) TI - An Integrated Quality Assurance Framework for Specifying Business Information Systems VL - 453 ER - TY - CONF AB - Visual Process Pattern (VPP) is a visual language to describe constraints on the behavior of UML Activities. They have been developed for the sake of formulating and verifying requirements on business process models (with Activities being one possible description language). In the VPP approach, a visual pattern is translated into an LTL formula, which can then be verified against a transition system describing the behavior of the Activity under consideration. In this paper, we aim at generalizing VPP. We show how to formulate patterns more generally, using either concrete or abstract syntax of the behavioral model under consideration. Additionally, we describe how these more general patterns can be verified against a model’s behavior. AU - Soltenborn, Christian AU - Engels, Gregor ID - 8435 T2 - Proceedings of the 1st International Workshop on Visual Formalisms for Patterns (VFfP 2009), Corvallis, OR (USA) TI - Towards Generalizing Visual Process Pattern VL - 25 ER - TY - CONF AU - von der Maßen, Thomas AU - Wübbeke, Andreas ID - 8436 T2 - Proceedings of Produktlinien im Kontext (PIK09) TI - Lösungsorientierte Software Produktlinienentwicklung in heterogenen Systemlandschaften ER - TY - JOUR AU - Wilde, M. A. AU - Reuter, Dirk AU - Heyn, Ch. AU - Wieck, A. D. AU - Grundler, D. ID - 8578 JF - Physical Review B SN - 1098-0121 TI - Inversion-asymmetry-induced spin splitting observed in the quantum oscillatory magnetization of a two-dimensional electron system ER - TY - JOUR AU - Buchholz, S. S. AU - Fischer, S. F. AU - Kunze, U. AU - Reuter, Dirk AU - Wieck, A. D. ID - 8579 JF - Applied Physics Letters SN - 0003-6951 TI - Nonlocal Aharonov–Bohm conductance oscillations in an asymmetric quantum ring ER - TY - JOUR AU - Blokland, J. H. AU - Bozkurt, M. AU - Ulloa, J. M. AU - Reuter, Dirk AU - Wieck, A. D. AU - Koenraad, P. M. AU - Christianen, P. C. M. AU - Maan, J. C. ID - 8580 JF - Applied Physics Letters SN - 0003-6951 TI - Ellipsoidal InAs quantum dots observed by cross-sectional scanning tunneling microscopy ER - TY - JOUR AU - Greilich, A. AU - Spatzek, S. AU - Yugova, I. A. AU - Akimov, I. A. AU - Yakovlev, D. R. AU - Efros, Al. L. AU - Reuter, Dirk AU - Wieck, A. D. AU - Bayer, M. ID - 8581 JF - Physical Review B SN - 1098-0121 TI - Collective single-mode precession of electron spins in an ensemble of singly charged (In,Ga)As/GaAs quantum dots ER - TY - JOUR AU - Greilich, A. AU - Economou, Sophia E. AU - Spatzek, S. AU - Yakovlev, D. R. AU - Reuter, Dirk AU - Wieck, A. D. AU - Reinecke, T. L. AU - Bayer, M. ID - 8582 JF - Nature Physics SN - 1745-2473 TI - Ultrafast optical rotations of electron spins in quantum dots ER - TY - JOUR AU - Yugova, I. A. AU - Sokolova, A. A. AU - Yakovlev, D. R. AU - Greilich, A. AU - Reuter, Dirk AU - Wieck, A. D. AU - Bayer, M. ID - 8583 JF - Physical Review Letters SN - 0031-9007 TI - Long-Term Hole Spin Memory in the Resonantly Amplified Spin Coherence ofInGaAs/GaAsQuantum Well Electrons ER - TY - JOUR AU - Wilde, M. A. AU - Reuter, Dirk AU - Heyn, Ch. AU - Wieck, A. D. AU - Grundler, D. ID - 8584 JF - Physical Review B SN - 1098-0121 TI - Inversion-asymmetry-induced spin splitting observed in the quantum oscillatory magnetization of a two-dimensional electron system ER - TY - JOUR AU - Marquardt, B. AU - Geller, M. AU - Lorke, A. AU - Reuter, Dirk AU - Wieck, A. D. ID - 8585 JF - Applied Physics Letters SN - 0003-6951 TI - Using a two-dimensional electron gas to study nonequilibrium tunneling dynamics and charge storage in self-assembled quantum dots ER - TY - JOUR AU - Völk, S. AU - Wixforth, A. AU - Reuter, Dirk AU - Wieck, A. D. AU - Ebbecke, J. ID - 8586 JF - Physical Review B SN - 1098-0121 TI - Conversion of bound excitons to free excitons by surface acoustic waves ER - TY - JOUR AU - Auer, T. AU - Oulton, R. AU - Bauschulte, A. AU - Yakovlev, D. R. AU - Bayer, M. AU - Verbin, S. Yu. AU - Cherbunin, R. V. AU - Reuter, Dirk AU - Wieck, A. D. ID - 8587 JF - Physical Review B SN - 1098-0121 TI - Measurement of the Knight field and local nuclear dipole-dipole field in an InGaAs/GaAs quantum dot ensemble ER - TY - JOUR AU - Fischer, S F AU - Deborde, J L AU - Kunze, U AU - Reuter, Dirk AU - Wieck, A D ID - 8588 JF - Journal of Physics: Conference Series SN - 1742-6596 TI - Lateral electron tunnelling spectroscopy in etched GaAs/AlGaAs-based nanostructures ER - TY - JOUR AU - Fischer, S F AU - Deborde, J L AU - Kunze, U AU - Reuter, Dirk AU - Wieck, A D ID - 8589 JF - Journal of Physics: Conference Series SN - 1742-6596 TI - Lateral electron tunnelling spectroscopy in etched GaAs/AlGaAs-based nanostructures ER - TY - JOUR AU - Cerchez, M. AU - Heinzel, T. AU - Reuter, Dirk AU - Wieck, A.D. ID - 8591 JF - Superlattices and Microstructures SN - 0749-6036 TI - Magnetic barrier in a two-dimensional hole gas ER - TY - JOUR AU - Kurtze, H. AU - Seebeck, J. AU - Gartner, P. AU - Yakovlev, D. R. AU - Reuter, Dirk AU - Wieck, A. D. AU - Bayer, M. AU - Jahnke, F. ID - 8592 JF - Physical Review B SN - 1098-0121 TI - Carrier relaxation dynamics in self-assembled semiconductor quantum dots ER - TY - BOOK AB - Gegenstand des Sonderforschungsbereichs 614 "Selbstoptimierende Systeme des Maschinenbaus" sind maschinenbauliche Systeme von morgen. Diese werden aus Konfigurationen von Systemelementen mit einer inh{\"a}renten Teilintelligenz bestehen. Das Verhalten des Gesamtsystems wird durch die Kommunikation und Kooperation der intelligenten Systemelemente geprägt sein. Selbstoptimierung ermöglicht handlungsfähige Systeme mit inhärenter "Intelligenz", die in der Lage sind, selbständig und flexibel auf veränderte Betriebsbedingungen zu reagieren. Die Vision des SFB 614 ist eine neue Schule des Entwurfs von intelligenten mechatronischen Systemen. Diese neue Schule beruht auf einem Instrumentarium bestehend aus Vorgehensmodellen, Entwurfsmethoden und -werkzeugen und Praktiken. Das Instrumentarium entsteht im Wechselspiel mit der Entwicklung von anspruchsvollen Demonstratoren, die als repräsentativ für künftige Erzeugnisse des Maschinenbaus und verwandter Branchen wie der Automobilindustrie und der Medizintechnik gelten können. Vor diesem Hintergrund zeichnet sich die Herausforderung ab, derartige Systeme zuverlässig zu gestalten. Wir haben statt Zuverlässigkeit den Begriff Verlässlichkeit gewählt, weil er die Aspekte Verfügbarkeit, Zuverlässigkeit, Sicherheit und Vertraulichkeit umfasst und somit unser Anliegen auf den Weg zu den Erzeugnissen von morgen treffend zum Ausdruck bringt. Das vorliegende Buch ist das Ergebnis der projektübergreifenden interdisziplinären Zusammenarbeit in dem Arbeitskreis "Sicherheit und Stabilität" des SFB 614. Es gibt eine gut aufbereitete Einführung in den umfassenden Themenkomplex Verlässlichkeit und zeigt anhand von anspruchsvollen Beispielen der fortgeschrittenen Mechatronik, wie komplexe, stark durch Informations- und Kommunikationstechnik geprägte technische Systeme verlässlich gestaltet werden können. Dabei wird deutlich, dass das Wirkparadigma der Selbstoptimierung nicht nur größere Anstrengungen erfordert, um Verlässlichkeit zu erreichen, sondern auch neue Möglichkeiten für mehr Verlässlichkeit eröffnet. AU - Dell'Aere, Alessandro AU - Hirsch, Martin AU - Klöpper, Benjamin AU - Koester, Markus AU - Krup, Alexander AU - Krüger, Martin AU - Müller, Thomas AU - Oberthür, Simon AU - Pook, Sebastian AU - Priesterjahn, Claudia AU - Romaus, Christoph AU - Schmidt, Alexander AU - Sondermann-Wölke, Christoph AU - Tichy, Matthias AU - Vöcking, Henner AU - Zimmer, Detmar ID - 9579 TI - Verlässlichkeit selbstoptimierender Systeme -- Potenziale nutzen und Risiken vermeiden VL - 235 ER - TY - CHAP AU - Kakvi, Saqib ID - 9616 SN - 0302-9743 T2 - Lecture Notes in Computer Science TI - Reinforcement Learning for Blackjack ER - TY - GEN AU - Tönnies, Merle ID - 9636 IS - 1 T2 - Anglistik. International Journal of English Studies TI - Assmann, A.: Einführung in die Kulturwissenschaft VL - 20 ER - TY - GEN AU - Flotmann, Christina ED - Arnold, Heinz Ludwig ID - 9727 T2 - Kindlers Literaturlexikon TI - Lionel Johnson VL - 8 ER - TY - CONF AB - Die Entwicklung piezoelektrischer Tr{\"a}gheitsmotoren basiert derzeit auf Erfahrungswissen und Prototypenbau. Es existiert kein allgemeines Modell und keine Methodik f{\"u}r die systematische Entwicklung dieser Motoren. In diesem Beitrag stellen wir einen Ansatz zur Entwicklung einer solchen Methodik und den von uns aufgebauten Versuchsmotor vor. Der Motor ist modular aufgebaut; er besteht im Wesentlichen aus einer piezoelektrischen Antriebseinheit, einem Antriebsstab und dem zu bewegenden Schlitten. Eine wesentliche Aufgabe bei der modellbasierten Entwicklung von Tr{\"a}gheitsmotoren ist die hinreichende Beschreibung des dynamischen Verhaltens der Antriebseinheit. Um ein geeignetes Modell zu finden, bzw. um nachzuweisen, dass einfache parametrische Modelle gen{\"u}gen, wird die Antriebseinheit des Motors detailliert untersucht. Es zeigt sich, dass der derzeitige Aufbau eine Reihe von Nachteilen aufweist, die durch eine teilweise Neukonstruktion der Antriebseinheit beseitigt oder zumindest entsch{\"a}rft werden k{\"o}nnen. AU - Hunstig, Matthias AU - Hemsel, Tobias ED - Gausemeier, Jürgen ED - Rammig, Franz ED - Schäfer, Wilhelm ED - Trächtler, Ansgar ID - 9735 KW - Piezoelektrischer Tr{\ SN - 1948-5719 T2 - 6. Paderborner Workshop Entwurf mechatronischer Systeme TI - Modellbasierte Entwicklung piezoelektrischer Trägheitsmotoren VL - 250 ER - TY - CONF AB - Self-optimizing mechatronic systems are a new class of technical systems. On the one hand, new challenges regarding dependability arise from their additional complexity and adaptivity. On the other hand, their abilities enable new concepts and methods to improve the dependability of mechatronic systems. This paper introduces a multi-level dependability concept for self-optimizing mechatronic systems and shows how planning can be used to improve the availability and reliability of systems in the operating stages. AU - Klöpper, Benjamin AU - Sondermann-Wölke, Christoph AU - Romaus, Christoph AU - Vöcking, Henner ID - 9736 KW - multilevel dependability concept KW - probabilistic planning KW - self-optimizing mechatronic systems KW - systems reliability KW - mechatronics KW - planning (artificial intelligence) KW - self-adjusting systems T2 - Computational Intelligence in Control and Automation, 2009. CICA 2009. IEEE Symposium on TI - Probabilistic planning integrated in a multi-level dependability concept for mechatronic systems ER - TY - JOUR AU - Sattel, Thomas AU - Hesse, Tobias AU - Sondermann-Wölke, Christoph AU - Hüfner, Thorsten ID - 9738 JF - memo - mechatronik mobil TI - Potenzialfeldmethoden zur Fahrzeugführung für Fahrerassistenzsysteme zum automatisierten Fahren VL - 1 ER - TY - CONF AB - Die Integration von Selbstoptimierung in mechatronische Systeme beinhaltet sowohl Risiken als auch Potenziale für die Verlässlichkeit. Die Risiken entstehen durch die Selbstoptimierung in den komplexen Systemen, da das Systemverhalten nur begrenzt im Voraus vorhersehbar ist. Daher wurde innerhalb des Sonderforschungsbereichs 614 ''Selbstoptimierende Systeme des Maschinenbaus" ein mehrstufiges Verlässlichkeitskonzept entworfen, welches das Ziel Verlässlichkeit stärker im Zielsystem verankert. In diesem Beitrag wird zum einen das erarbeitete Verlässlichkeitskonzept und zum anderen die Anwendung dieses Konzepts innerhalb des aktiven Spurführungsmoduls eines schienengebundenen Fahrzeugs vorgestellt. Um Programmierfehler auszuschließen wurde das Verlässlichkeitskonzept modelliert und über Model Checking verifiziert. Anhand von Simulationsergebnissen wird gezeigt, wie durch das mehrstufige Verlässlichkeitskonzept auf einen Ausfall eines Wirbelstromsensors des aktiven Spurführungsmoduls reagiert werden kann. AU - Sondermann-Wölke, Christoph AU - Geisler, Jens AU - Hirsch, Martin AU - Hemsel, Tobias ED - Gausemeier, Jürgen ED - Rammig, Franz Josef ED - Trächtler, Ansger ID - 9740 KW - Verlässigkeit T2 - Entwurf mechatronischer Systeme TI - Verlässlichkeit im aktiven selbstoptimierenden Spurführungsmodul eines schienengebundenen Fahrzeugs VL - 250 ER - TY - CONF AU - Sondermann-Wölke, Christoph AU - Hesse, Tobias AU - Sattel, Thomas AU - Hemsel, Tobias ID - 9741 T2 - 24. Tagung Technische Zuverlässigkeit (TTZ 2009) - Entwicklung und Betrieb zuverlässiger Produkte, Leonberg TI - Menschliche Unzuverlässigkeit als Grundlage für den Entwurf von Kollisionsvermeidungssystemen. VL - 2065 ER - TY - CONF AB - New mechatronic systems, called self-optimizing systems, are able to adapt their behavior according to environmental, user and system specific influences. Self-optimizing systems are complex and due to their non-deterministic behavior comprise hidden risks, which cannot be foreseen in the design phase of the system. Therefore, this paper presents modifications of the current condition monitoring policy, to be able to cope with this new kind of systems. Beside avoiding critical situations evoked by self-optimization, the proposed concept uses self-optimization to increase the dependability of the system. In this case, the concept is applied to the active guidance module of an innovative rail-bound vehicle. AU - Sondermann-Wölke, Christoph AU - Sextro, Walter ID - 9742 KW - condition monitoring KW - mechatronic systems KW - rail bound vehicle KW - rail guidance module KW - self-optimization KW - self-optimizing function modules KW - condition monitoring KW - mechatronics KW - railway rolling stock KW - self-adjusting systems T2 - Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD '09. Computation World: TI - Towards the Integration of Condition Monitoring in Self-Optimizing Function Modules ER - TY - JOUR AB - A novel technique to form periodically nanostructured Si surface morphologies based on nanosphere lithography (NSL) and He ion implantation induced swelling is studied in detail. It is shown that by implantation of keV He ions through the nanometric openings of NSL masks regular arrays of hillocks and rings can be created on silicon surfaces. The shape and size of these surface features can be easily controlled by adjusting the ion dose and energy as well as the mask size. Feature heights of more than 100 nm can be obtained, while feature distances are typically 1.15 or 2 (hillock or ring) nanosphere radii, which are chosen to be between 100 and 500 nm in this study. Atomic force and scanning electron microscopy measurements of the surface morphology are supplemented by cross-sectional transmission electron microscopy, revealing the inner structure of hillocks to consist of a central cavity surrounded by a hierarchical arrangement of smaller voids. The surface morphologies developed here have the potential to be useful for fixing and separating nano-objects on a silicon surface. AU - Fischer, Frederic J.C. AU - Weinl, Michael AU - Lindner, Jörg AU - Stritzker, Bernd ID - 4152 JF - MRS Proceedings SN - 1946-4274 TI - Nanoscale Surface Patterning of Silicon Using Local Swelling Induced by He Implantation through NSL-Masks VL - 1181 ER - TY - CONF AB - We show that an optically driven carrier spin undergoes indirect dephasing even in the absence of spin-reservoir coupling and illustrate it for phonon-induced decoherence during optical spin rotation in a single quantum dot. AU - Grodecka, Anna AU - Machnikowski, Pawel AU - Förstner, Jens ID - 4180 KW - tet_topic_qd SN - 9781557528735 T2 - Advances in Optical Sciences Congress TI - Indirect Dephasing Channel for Optically Controlled Spin in a Single Quantum Dot ER - TY - JOUR AB - We demonstrate that an optically driven spin of a carrier in a quantum dot undergoes indirect dephasing via conditional optically induced charge evolution even in the absence of any direct interaction between the spin and its environment. A generic model for the indirect dephasing with a three-component system with spin, charge, and reservoir is proposed. This indirect decoherence channel is studied for the optical spin manipulation in a quantum dot with a microscopic description of the charge-phonon interaction taking into account its non-Markovian nature. AU - Grodecka, A. AU - Machnikowski, P. AU - Förstner, Jens ID - 4182 IS - 4 JF - Physical Review A KW - tet_topic_qd SN - 1050-2947 TI - Indirect spin dephasing via charge-state decoherence in optical control schemes in quantum dots VL - 79 ER - TY - JOUR AB - Buried ion beam synthesized 3C-SiC layers were revealed to the surface of silicon wafers to provide lattice matched substrates for GaN thin film epitaxy. Both epitaxial SiC/Si(1 1 1) and SiC/Si(0 0 1) growth surfaces with either six- or four-fold crystal symmetry, respectively, were formed. GaN thin film growth was achieved by ion beam assisted molecular beam epitaxy (IBA–MBE) which – owing to the energy and momentum transfer of the ions – allows to deposit epitaxial thin films at particularly low growth temperatures where both the stable hexagonal and the metastable cubic polytype of GaN can be formed. It is shown by X-ray diffraction (XRD) and cross-sectional transmission electron microscopy (XTEM) that using appropriate fluxes of Ga atoms both purely hexagonal and purely cubic GaN films can be grown epitaxially on SiC/Si(1 1 1) and SiC/Si(0 0 1), respectively. Thereby Ga rich growth conditions seem to stabilize the formation of the cubic polytype. It is obvious from XTEM studies that the high density of crystal defects in the SiC layer is not transferred onto the growing GaN films and that the crystalline quality of GaN films improves with increasing film thickness. The influence of surface roughness and wettability, interfacial cavities and the nucleation of twin-type defects at the GaN/SiC interface on the crystalline quality of the GaN thin films is discussed. AU - Häberlen, M. AU - Gerlach, J.W. AU - Murphy, B. AU - Lindner, Jörg AU - Stritzker, B. ID - 4192 IS - 6 JF - Journal of Crystal Growth SN - 0022-0248 TI - Structural characterization of cubic and hexagonal GaN thin films grown by IBA–MBE on SiC/Si VL - 312 ER - TY - JOUR AB - The growth of cubic group III-nitrides is a direct way to eliminate polarization effects, which inherently limit the fabrication of normally-off heterojunction field-effect transistors (HFETs) in GaN technology. HFET structures were fabricated of non-polar cubic AlGaN/GaN hetero layers grown by plasma assisted molecular beam epitaxy (MBE) on free standing 3C-SiC (001). The electrical insulation of 3C-SiC was realised by Ar+ implantation before c-AlGaN/GaN MBE. The structural properties of the epilayers were studied by highresolution x-ray diffraction (HRXRD). HFETs with normally off and normally-on characteristics were fabricated of cubic AlGaN/GaN. Capacitance-voltage (CV) characteristics of thegate contact were performed to detect the electron channel at the c-AlGaN/GaN hetero interface. AU - Tschumak, Elena AU - Lindner, Jörg AU - Bürger, M. AU - Lischka, K. AU - Nagasawa, H. AU - Abe, M. AU - As, Donald ID - 4196 IS - 1 JF - physica status solidi (c) SN - 1862-6351 TI - Non-polar cubic AlGaN/GaN HFETs grown by MBE on Ar+implanted 3C-SiC (001) VL - 7 ER - TY - JOUR AB - Three-dimensional (3D) photonic crystal exhibit direction-selective transmission with respect to the center frequency of the stop gap. As a model system, the stop gap of a 3D fcc inverted-opal photonic crystal is studied in the microwave regime in detail using 3D polyamide models. The difference in the direction-selective transmittance between crystals grown in two different high symmetry directions is experimentally shown and compared to numerical simulations. AU - Üpping, J. AU - Miclea, P.T. AU - Wehrspohn, R.B. AU - Baumgarten, T. AU - Greulich-Weber, Siegmund ID - 4198 IS - 2 JF - Photonics and Nanostructures - Fundamentals and Applications SN - 1569-4410 TI - Direction-selective optical transmission of 3D fcc photonic crystals in the microwave regime VL - 8 ER - TY - JOUR AB - The solar cell concept presented here is based on 3C-SiC nano- or microwires and conju¬gated polymers. Therefore the silicon carbide wires are fabricated by a sol-gel route including a car-bothermal reduction step, allowing growth with predetermined uniform diameters between 0.1 and 2μm and lengths up to several centimetres. The design of our photovoltaic device is therein based on a p-i-n structure, well known e.g. from silicon photovoltaics, involving an intrinsic semiconduc¬tor as the central photoactive layer, sandwiched between two complementary doped wide-bandgap semiconductors giving the driving force for charge separation. In our case the 3C-SiC microwires act as the electron acceptor and simultaneously as carrier material for all involved components of the photovoltaic element. AU - Greulich-Weber, Siegmund AU - Zöller, M. AU - Friedel, B. ID - 4219 JF - Materials Science Forum SN - 1662-9752 TI - Textile Solar Cells Based on SiC Microwires VL - 615-617 ER -