@article{3064, author = {{Gries, Thomas and Sievert, Gerhard and Wieneke, Axel}}, journal = {{International Economics and Economic Policy}}, pages = {{157--171}}, title = {{{Interbank market frictions, international banks and growth}}}, doi = {{10.1007/s10368-004-0011-z}}, volume = {{1}}, year = {{2004}}, } @article{3065, author = {{Gries, Thomas and Langeleh, Dirk}}, journal = {{Perspektiven der Wirtschaftspolitik }}, number = {{3}}, pages = {{293--311}}, title = {{{Anreizkompatibilität als zentrales Element eines neu gestalteten Gesundheitsmarktes}}}, doi = {{10.1111/j.1468-2516.2004.00154.x}}, volume = {{5}}, year = {{2004}}, } @techreport{26992, author = {{Rührup, Stefan and Schindelhauer, Christian}}, title = {{{Traffic and Hop Efficient Position-based Routing using a Cell Structure}}}, year = {{2004}}, } @article{27750, author = {{Buyken, Anette and Hahn, S and Kroke, A}}, issn = {{0307-0565}}, journal = {{International Journal of Obesity}}, pages = {{24--28}}, title = {{{Differences between recumbent length and stature measurement in groups of 2- and 3-y-old children and its relevance for the use of European body mass index references}}}, doi = {{10.1038/sj.ijo.0802738}}, year = {{2004}}, } @techreport{27925, author = {{Schlegel-Matthies, Kirsten}}, title = {{{Verbraucherbildung im Forschungsprojekt REVIS – Grundlagen}}}, year = {{2004}}, } @article{27926, author = {{Schlegel-Matthies, Kirsten}}, journal = {{Campus Culinaire }}, pages = {{103--108}}, title = {{{„Was gibt’s heute?“ Aktuelle Ansätze der Ernährungsbildung}}}, volume = {{1}}, year = {{2004}}, } @techreport{20933, abstract = {{Today, in software intensive projects a huge amount of the budget flows into the analysis of the already existing system. The reason for the high costs results mainly from the fact that analyses are often made manually or with automatic tool support, which is inappropriate for analyzing large systems. Semi-automatic analysis approaches usually use a notion of fuzziness to overcome this limitation, but inherit the problem of selecting appropriate initial values. In this paper we present an approach to adapt the initial values of our semi-automatic reverse engineering process. We provide the reverse engineer with accuracy information for results produced by a rule-based inference algorithm. Based on the changes of the results done by the reverse engineer we automatically adapt a credibility value of each rule, which previously has been used to compute the accuracy of the result. The adaption fits seamlessly into our overall analysis process. First tests show that it is suitable for the calibration of our fuzzyfied rule-based pattern recognition approach.}}, author = {{Niere, Jörrg and Meyer, Matthias and Wendehals, Lothar}}, title = {{{User-driven adaption in rule-based pattern recognition}}}, year = {{2004}}, } @inproceedings{21162, author = {{Meschut, Gerson and Fuhrmann, T.}}, booktitle = {{Tagungsband zum 4. Kolloquium „Gemeinsame Forschung in der Klebtechnik“ der DECHEMA}}, location = {{Frankfurt}}, pages = {{45--48}}, publisher = {{DVS-Verlag GmbH}}, title = {{{Kleben von CFK-Metall-Strukturen im Fahrzeug}}}, year = {{2004}}, } @inproceedings{21164, author = {{Meschut, Gerson}}, location = {{Frankfurt}}, title = {{{Forschungsbedarf in der Klebtechnik aus Sicht der Automobilindustrie}}}, year = {{2004}}, } @inproceedings{21165, author = {{Bischof, S. and Fricke, A. and Meschut, Gerson}}, booktitle = {{Tagungsband zur Swiss Bondung ´04}}, location = {{Rapperswil (CH)}}, pages = {{1--10}}, title = {{{Adhesive bonding and mechanical joining for planking of spaceframe-structures with thermoplastics}}}, year = {{2004}}, } @inproceedings{21166, author = {{Meschut, Gerson and Goede, M.}}, booktitle = {{Tagungsband zur 9. International Aachen Welding Conference: Joining in Traffic and Transportation Industry – Processes, Progress, Applications}}, isbn = {{ISBN 3-8322-2840-3}}, location = {{Aachen}}, pages = {{37--47}}, title = {{{New material and design concepts for constructions of vehicles – challenges for thermal an cold joining techniques}}}, year = {{2004}}, } @article{21167, author = {{Disse, T. and Maciej, M. and Meschut, Gerson and Piccolo, S. and Timmermann, R. and Wibbeke, T.-M.}}, journal = {{Adhäsion}}, number = {{7-8}}, pages = {{14--19}}, title = {{{Kleben und Hybridfügen von Leichtbaustrukturen für den Automobilbau}}}, volume = {{48}}, year = {{2004}}, } @article{21168, author = {{Letsch, S. and Meschut, Gerson and Küting, J. and Peitz, V. and Timmermann, R. and Schmid, L.}}, journal = {{Schweißen und Schneiden}}, number = {{9}}, pages = {{460--467}}, title = {{{Mechanische Fügetechnik für die Mischbauweise – Teil 1: Systemoptimierungen}}}, volume = {{56}}, year = {{2004}}, } @inproceedings{21169, author = {{Hahn, O. and Schumann, S. and Meschut, Gerson and Fuhrmann, T.}}, location = {{Beijing, China}}, title = {{{Material-Secific joining techniques for magnesium body structures}}}, year = {{2004}}, } @article{21170, author = {{Letsch, S. and Meschut, Gerson and Küting, J. and Peitz, V. and Timmermann, R. and Schmid, L.}}, journal = {{Schweißen und Schneiden}}, number = {{10}}, pages = {{518--526}}, title = {{{Mechanische Fügetechnik für die Mischbauweise – Teil 2: Neuartige Fügeverfahren}}}, volume = {{56}}, year = {{2004}}, } @article{2119, author = {{Kolman, Petr and Scheideler, Christian}}, journal = {{Algorithmica}}, number = {{3}}, pages = {{209----233}}, title = {{{Simple On-Line Algorithms for the Maximum Disjoint Paths Problem}}}, doi = {{10.1007/s00453-004-1086-1}}, year = {{2004}}, } @inproceedings{2120, author = {{Awerbuch, Baruch and Scheideler, Christian}}, booktitle = {{ICALP}}, pages = {{183----195}}, title = {{{Group Spreading: A Protocol for Provably Secure Distributed Name Service}}}, volume = {{3142}}, year = {{2004}}, } @inproceedings{2121, author = {{Riley, Chris and Scheideler, Christian}}, booktitle = {{IPDPS}}, title = {{{A Distributed Hash Table for Computational Grids}}}, year = {{2004}}, } @inproceedings{21217, author = {{Meschut, Gerson}}, booktitle = {{Tagungsband zum 2. Böllhoff-Fachkolloquium}}, location = {{Bielefeld}}, pages = {{135--144}}, title = {{{Zukünftige Werkstoff- und Bauweisenkonzepte im Automobilbau - Herausforderungen für die Gewindetechnologie}}}, year = {{2004}}, } @inproceedings{21218, author = {{Bye, C. and Draht, T. and Küting, J. and Lübbers, R. and Meschut, Gerson and Ruther, M.}}, booktitle = {{Tagungsband zum 11. Paderborner Symposium Fügetechnik „Mechanisches Fügen und Kleben“}}, isbn = {{ISBN 3-9809524-I-X}}, location = {{Paderborn}}, pages = {{22--43}}, title = {{{Fügen von Kunststoffen im strukturellen Leichtbau}}}, year = {{2004}}, } @inproceedings{2122, author = {{Awerbuch, Baruch and Scheideler, Christian}}, booktitle = {{IPTPS}}, pages = {{237----249}}, title = {{{Robust Distributed Name Service}}}, volume = {{3279}}, year = {{2004}}, } @misc{21226, author = {{Hahn, O. and Meschut, Gerson}}, title = {{{Druckfügeverfahren und damit hergestellte Rahmen}}}, year = {{2004}}, } @misc{21228, author = {{Amedick, Jürgen and Hahn, Ortwin and Kurzok, Jan and Letsch, Stefan and Meschut, Gerson and Peitz, Volker and Timmermann, Rüdiger}}, title = {{{Fügeverfahren und Fügevorrichtung zum Verbinden von überlappend angeordneten Fügeteilen}}}, year = {{2004}}, } @inproceedings{2123, author = {{Ateniese, Giuseppe and Riley, Chris and Scheideler, Christian}}, booktitle = {{IWIA}}, pages = {{33----47}}, title = {{{Survivable Monitoring in Dynamic Networks}}}, year = {{2004}}, } @inproceedings{2124, author = {{Awerbuch, Baruch and Scheideler, Christian}}, booktitle = {{SODA}}, pages = {{318----327}}, title = {{{The hyperring: a low-congestion deterministic data structure for distributed environments}}}, year = {{2004}}, } @inproceedings{2125, author = {{Awerbuch, Baruch and Scheideler, Christian}}, booktitle = {{SPAA}}, pages = {{44----53}}, title = {{{Consistent and compact data management in distributed storage systems}}}, year = {{2004}}, } @inproceedings{2126, author = {{Bhargava, Ankur and Kothapalli, Kishore and Riley, Chris and Scheideler, Christian and Thober, Mark}}, booktitle = {{SPAA}}, pages = {{170----179}}, title = {{{Pagoda: a dynamic overlay network for routing, data management, and multicasting}}}, year = {{2004}}, } @inproceedings{2127, author = {{Bagchi, Amitabha and Bhargava, Ankur and Chaudhary, Amitabh and Eppstein, David and Scheideler, Christian}}, booktitle = {{SPAA}}, pages = {{286----293}}, publisher = {{ACM}}, title = {{{The effect of faults on network expansion}}}, year = {{2004}}, } @article{17312, author = {{Unger, L. and Bauch, M. and Baudry, A. and Bungenstock, M. and Mertsching, B. and Oevel, Gudrun and Padberg, K. and Thiere, B.}}, journal = {{SoftwareTechnikTrends}}, number = {{1}}, title = {{{math-kit - Ein multimedialer Baukasten für die Mathematikausbildung im Grundstudium}}}, volume = {{24}}, year = {{2004}}, } @inproceedings{17346, author = {{Brinkmann, André and Heidebuer, Michael and Meyer auf der Heide, Friedhelm and Rückert, Ulrich and Salzwedel, Kay and Vodisek, Mario}}, booktitle = {{21st {IEEE} Conference on Mass Storage Systems and Technologies / 12th {NASA} Goddard Conference on Mass Storage Systems and Technologies, Greenbelt, Maryland, USA}}, editor = {{Kobler, Ben and Hariharan, P. C.}}, pages = {{153----157}}, publisher = {{IEEE}}, title = {{{V:Drive - Costs and Benefits of an Out-of-Band Storage Virtualization System}}}, year = {{2004}}, } @article{1746, author = {{Christ, A. and Zentgraf, Thomas and Kuhl, J. and Tikhodeev, S. G. and Gippius, N. A. and Giessen, H.}}, issn = {{1098-0121}}, journal = {{Physical Review B}}, number = {{12}}, publisher = {{American Physical Society (APS)}}, title = {{{Optical properties of planar metallic photonic crystal structures: Experiment and theory}}}, doi = {{10.1103/physrevb.70.125113}}, volume = {{70}}, year = {{2004}}, } @article{1747, author = {{Zentgraf, Thomas and Christ, A. and Kuhl, J. and Giessen, H.}}, issn = {{0031-9007}}, journal = {{Physical Review Letters}}, number = {{24}}, publisher = {{American Physical Society (APS)}}, title = {{{Tailoring the Ultrafast Dephasing of Quasiparticles in Metallic Photonic Crystals}}}, doi = {{10.1103/physrevlett.93.243901}}, volume = {{93}}, year = {{2004}}, } @misc{17684, author = {{Peckhaus, Volker}}, booktitle = {{Lexikon der bedeutenden Naturwissenschaftler in drei Bänden, Bd. 3: Men–Z}}, editor = {{Hoffmann, Dieter and Laitko, Hubert and Müller-Wille, Staffan}}, pages = {{475}}, publisher = {{Spektrum Akademischer Verlag}}, title = {{{Wolff, Christian Freiherr von}}}, year = {{2004}}, } @inproceedings{18777, author = {{Sohler, Christian and Damerow, Valentina}}, booktitle = {{Proceedings of the 20th European Workshop on Computational Geometry (EWCG'04)}}, pages = {{93 -- 96}}, title = {{{Smoothed Number of Extreme Points under Uniform Noise}}}, year = {{2004}}, } @inproceedings{18778, abstract = {{Given a point set P in the d-dimensional unit hypercube, we give upper bounds on the maximal expected number of extreme points when each point is perturbed by small random noise chosen independently for each point from the same noise distribution Δ. Our results are parametrized by the variance of the noise distribution. For large variance we essentially consider the average case for distribution Δ while for variance 0 we consider the worst case. Hence our results give upper bounds on the number of extreme points where our input distributions range from average case to worst case.
Our main contribution is a rather general lemma that can be used to obtain upper bounds on the expected number of extreme points for a large class of noise distributions. We then apply this lemma to obtain explicit bounds for random noise coming from the Gaussian normal distribution of variance σ² and the uniform distribution in a hypercube of side length &epsilon. For these noise distributions we show upper bounds of O( (1/ σ )^d * log^3/2 * d - 1 n ) and O( ( (n log n) / ε )^d/(d+1) ), respectively. Besides its theoretical motivation our model is also motivated by the observation that in many applications of convex hull algorithms the input data is inherently noisy, e.g. when the data comes from physical measurement or imprecise arithmetic is used.}}, author = {{Damerow, Valentina and Sohler, Christian}}, booktitle = {{Proceedings of the 12th European Symposium on Algorithms (ESA'04)}}, isbn = {{9783540230250}}, issn = {{0302-9743}}, title = {{{Extreme Points Under Random Noise}}}, doi = {{10.1007/978-3-540-30140-0_25}}, year = {{2004}}, } @inproceedings{18785, abstract = {{A limiting factor in the performance of a render- ing system is the number of state changes, i.e., changes of the attributes material, texture, shader program, etc., in the stream of rendered primitives. We propose to include a small buffer between appli- cation and graphics hardware in the rendering sys- tem. This pipeline buffer is used to rearrange the incoming sequence of primitives on-line and locally in such a way that the number of state changes is minimized. This method is generic; it can be easily integrated into existing rendering systems. In our experiments a pipeline buffer reduces the number of state changes by an order of magnitude and achieves almost the same rendering time as an optimal, i.e., presorted, sequence without pipeline buffer. Due to its simple structure and its low mem- ory requirements this method can easily be imple- mented in software or even hardware.}}, author = {{Sohler, Christian and Krokowski, Jens and Räcke, Harald and Westermann, Matthias}}, booktitle = {{Proceedings of the Vision, Modeling, and Visualization Conference (VMV 2004)}}, title = {{{Reducing State Changes with a Pipeline Buffer}}}, year = {{2004}}, } @inproceedings{18786, author = {{Sohler, Christian and Czumaj, Artur}}, booktitle = {{Automata, Languages and Programming (ICALP)}}, number = {{1}}, pages = {{396--407}}, title = {{{Sublinear-Time Approximation for Clustering via Random Sampling}}}, year = {{2004}}, } @book{19010, abstract = {{2. Auflage 2006}}, author = {{Eke, Norbert Otto and Allkemper, Alo}}, pages = {{316}}, publisher = {{Fink}}, title = {{{Literaturwissenschaft}}}, year = {{2004}}, } @inproceedings{1911, author = {{Aguiar, Ana and Karl, Holger and Wolisz, Adam}}, booktitle = {{Proceedings of European Wireless 2004, Barcelona / Spain }}, title = {{{Channel Adaptive Techniques in the Presence of Channel Prediction Inaccuracy}}}, year = {{2004}}, } @inbook{19143, author = {{Seng, Eva- Maria}}, booktitle = {{Katalog der Landeskunstausstellung Sachsen-Anhalts in Magdeburg 2004}}, title = {{{Einleitung „in der zeit“ – kunst aus sachsen-anhalt 2004}}}, year = {{2004}}, } @inbook{19347, author = {{Eke, Norbert Otto}}, booktitle = {{Mahagonny.com. The Brecht Yearbook 29}}, pages = {{379--393}}, title = {{{Götter in der Stadt oder: „Wo Aas ist, sammeln sich die Geier!“ Stadtuntergänge bei Brecht und Trolle}}}, volume = {{29}}, year = {{2004}}, } @inbook{19348, author = {{Eke, Norbert Otto}}, booktitle = {{Crossing Media. Theater – Film – Fotografie – Neue Medien}}, editor = {{Balme, Christopher and Moninger, Markus}}, pages = {{121--146}}, publisher = {{epodium}}, title = {{{Intermedialität und Theatralisierung: Peter Greenaways Film-Theater}}}, volume = {{5}}, year = {{2004}}, } @inbook{19349, author = {{Eke, Norbert Otto}}, booktitle = {{„Der Text ist der Coyote“. Heiner Müller Bestandsaufnahme}}, editor = {{Mayer, Brigitte and Schulte, Christian}}, pages = {{51--69}}, publisher = {{Suhrkamp}}, title = {{{Eingebunkert – Stalin/Hitler: eine Konfiguration}}}, year = {{2004}}, } @article{20482, author = {{Weiß, M and Barthel, T and Baumeister, Jochen}}, journal = {{ForschungsForum}}, pages = {{62--67}}, title = {{{Stressmodelle und Analyse der Hirntätigkeit}}}, volume = {{7}}, year = {{2004}}, } @inproceedings{20931, abstract = {{Object-oriented software development is a subject area difficult to teach, espcially to beginners. They face a lot of abstraction and (from a beginners point of view) isolated topics, such as the syntax and semantics of a programming language, the functionality of a software development environment and basic object-oriented concepts. Although many professionals in education believe in the ``object first'' approach as the best method of introducing object-oriented concepts, there is no common agreement on how to start such courses. Current study programs often begin by teaching a programming language, instead of focusing on the basics of object-oriented concepts. In the last years a learning environment was developed based on a visual programming language to abstract away from details. It assists teaching step-by-step object-oriented concepts and the syntax and semantics of a programming language in secondary schools and first year university courses. Our goal is to port this learning environment to the widely used IDE Eclipse.}}, author = {{Meyer, Matthias and Wendehals, Lothar}}, booktitle = {{Proc. of the Eclipse Technology eXchange Workshop (ETX), Satellite Event of the 19th Conference on Object-Oriented Programming, Systems, Languages, and Applications (OOPSLA), Vancouver, Canada}}, pages = {{1--5}}, publisher = {{ACM Press}}, title = {{{Teaching Object-Oriented Concepts with Eclipse}}}, year = {{2004}}, } @inproceedings{20932, abstract = {{Design recovery, which means extracting design documents from source code, is usually done by static analysis techniques. Analysing behaviour by static analysis is very imprecise. We combine static and dynamic analysis to increase the preciseness of our design recovery process. In this paper we present an approach to collect data for the dynamic analysis by recording method calls during a program's execution. To reduce the amount of information we monitor only relevant classes and methods identified by static analysis.}}, author = {{Wendehals, Lothar and Meyer, Matthias and Elsner, Andreas}}, booktitle = {{Proc. of the 2nd International Fujaba Days 2004, Darmstadt, Germany}}, pages = {{7--10}}, publisher = {{University of Paderborn}}, title = {{{Selective Tracing of Java Programs}}}, volume = {{tr-ri-04-253}}, year = {{2004}}, } @article{17969, author = {{Sureth-Sloane, Caren and Müller, Jens and Nordhoff, Daniel}}, journal = {{BBK - Buchführung, Bilanzierung, Kostenrechnung}}, number = {{11}}, pages = {{1517--1520}}, title = {{{Aktuelle Änderungen beim Betriebsausgabenabzug - Geschenke, Bewirtungskosten, Fahrtkostenzuschüsse und Halbjahres-AfA}}}, volume = {{30}}, year = {{2004}}, } @article{17986, author = {{Ziegler, Martin and Brattka, Vasco}}, journal = {{Theoretical Computer Science}}, number = {{1-3}}, pages = {{187--211}}, title = {{{Computability in linear algebra}}}, doi = {{https://doi.org/10.1016/j.tcs.2004.06.022}}, volume = {{326}}, year = {{2004}}, } @inproceedings{18260, abstract = {{For uniform computability of regular sets in Euclidean space, previous work has identified twelve 'basic' notions, to (pairs of) which many previous notions considered in literature were shown to be equivalent. With respect to those basic notions, we now investigate on the computability of natural OPERATIONS on regular sets: union, intersection, complement, convex hull, image, and pre-image under suitable classes of functions.}}, author = {{Ziegler, Martin}}, booktitle = {{Computability and Complexity in Analysis}}, issn = {{0942-5616}}, number = {{4-5}}, pages = {{392--404}}, title = {{{Computable operators on regular sets}}}, doi = {{10.1002/malq.200310107}}, volume = {{50}}, year = {{2004}}, } @inproceedings{18263, abstract = {{We generalize univariate multipoint evaluation of polynomials of degree n at sublinear amortized cost per point. More precisely, it is shown how to evaluate a bivariate polynomial p of maximum degree less than n, specified by its n^2 coefficients, simultaneously at n^2 given points using a total of O(n^2.667) arithmetic operations. In terms of the input size N being quadratic in n, this amounts to an amortized cost of O(N^0.334) per point.}}, author = {{Nüsken, Michael and Ziegler, Martin}}, booktitle = {{Proc. 12th Annual Symposium on Algorithms (ESA'04)}}, isbn = {{9783540230250}}, issn = {{0302-9743}}, pages = {{544--555}}, publisher = {{Springer}}, title = {{{Fast Multipoint Evaluation of Bivariate Polynomials}}}, doi = {{10.1007/978-3-540-30140-0_49}}, volume = {{3221}}, year = {{2004}}, } @inproceedings{18279, abstract = {{For $c in REAL$, a $c$-spanner is a subgraph of a complete Euclidean graph satisfying that between any two vertices there exists a path of weighted length at most $c$ times their geometric distance. Based on this property to approximate a complete weighted graph, sparse spanners have found many applications, e.g., in FPTAS, geometric searching, and radio networks. For geometric searching, it turned out to suffice whether the radius rather than the length of some path between any two vertices is bounded relatively to their geometric distance; this is the defining property of weak spanners. Finally regarding radio network applications, a power spanner accounts for the total energy afforded for a wireless transmission with the requirement that the sum of the squares of the lengths of some path between any two planar vertices must be bounded relatively to the square of their geometric distance (or higher powers up to 6 or even 8).

While it is known that any $c$-spanner is also both a weak $C_1$-spanner and a $C_2$-power spanner (for appropriate $C_1,C_2$ depending only on $c$ but not on the graph under consideration), we show that the converse fails: There exists a family of $c_1$-power spanners that are no weak $C$-spanners and also a family of weak $c_2$-spanners that are no $C$-spanners for any fixed $C$ (and thus no uniform spanners, either). However the deepest result of the present work reveals that, surprisingly, any weak spanner is also a uniform power spanner. We further generalize the latter notion by considering $(c,delta)$-power spanners where the sum of the $delta$-th powers of the lengths has to be bounded; so $(cdot,2)$-power spanners coincide with the usual power spanners and $(cdot,1)$-power spanners are classical spanners. Interestingly, these $(cdot,delta)$-power spanners form a strict hierarchy where the above results still hold for any $deltageq2$; some even hold for $delta>1$ while counterexamples reveal others to fail for $delta<2$. In fact we show that in general every self-similar curve of fractal dimension $d>delta$ is no $(C,delta)$-power spanner for any fixed $C$. }}, author = {{Schindelhauer, Christian and Volbert, Klaus and Ziegler, Martin}}, booktitle = {{Proc. of 15th Annual International Symposium on Algorithms and Computation (ISAAC'04)}}, isbn = {{9783540241317}}, issn = {{0302-9743}}, pages = {{805--821}}, publisher = {{Springer }}, title = {{{Spanners, Weak Spanners, and Power Spanners for Wireless Networks}}}, doi = {{10.1007/978-3-540-30551-4_69}}, volume = {{3341}}, year = {{2004}}, } @inproceedings{18364, abstract = {{The visualisation of manufacturing-processes assists the user in understanding and analysis. Typically he can move free and unguided in a virtual environment which visualizes the entire process. Thus knowledge and conclusions are to some extend acquired on a random base. This article describes the development of a tool, which enables the user to interactively improve significant production processes in the simulation. He moves in a virtual 3D-environment (walkthrough system) and is able to acquire automatically calculated indications for significant processes. At the same time the simulation considers significant objects in a more detailed way. If the viewer is interested in a significant process, he is automatically guided to the relevant location where he can examine the critical situation by modification of the simulation model.}}, author = {{Mueck, Bengt and Dangelmaier, Wilhelm and Laroque, Christoph and Fischer, Matthias and Kortenjan, Michael}}, booktitle = {{Simulation and Visualisation 2004}}, pages = {{73--83}}, publisher = {{SCS European Publishing House}}, title = {{{Guidance of Users in Interactive 3D-Visualisations of Material Flow Simulations}}}, year = {{2004}}, } @article{18447, author = {{Oesterdiekhoff, Brigitte}}, journal = {{Informatik Spektrum}}, number = {{5}}, pages = {{448--452}}, title = {{{Transcoding von Webinhalten}}}, volume = {{27}}, year = {{2004}}, } @inproceedings{18448, author = {{Oesterdiekhoff, Brigitte}}, booktitle = {{Proceedings of IFIP Working Conference on Distributed and Parallel Embedded Systems (DIPES'04)}}, title = {{{Internet Premium Services for Flexible Format Distributed Devices}}}, year = {{2004}}, } @article{22325, author = {{Kretschmer, Ralf and Denzer, Vera and Zimmer, Detmar}}, journal = {{QZ - Qualität und Zuverlässigkeit }}, number = {{11}}, pages = {{38--41}}, publisher = {{Deutsche Gesellschaft für Qualität e.V. (DGQ)}}, title = {{{Bereichsübergreifendes Toleranzmanagement. Damit es rund läuft}}}, volume = {{49}}, year = {{2004}}, } @article{23332, author = {{Koke, Isabel and Funke, Herbert and Ferber, Ferdinand}}, journal = {{Posterbeitrag AG Composite}}, title = {{{Faserverbundwerkstoffe - experimentelle Bestimmung mechanischer Kenngrößen}}}, year = {{2004}}, } @article{23333, author = {{Trächtler, Ansgar}}, journal = {{Int. J. Vehicle Design}}, number = {{1}}, pages = {{1--12,}}, title = {{{Integrated Vehicle Dynamics Control Using Active Brake, Steering, and Suspension Systems}}}, volume = {{36}}, year = {{2004}}, } @article{23334, author = {{Albert, Amos and Trächtler, Ansgar}}, journal = {{13. Aachener Kolloquium Fahrzeug- und Motorentechnik}}, pages = {{593--610,}}, title = {{{Verteilte Fahrdynamikregelung mit zeitgesteuerter Architektur am Beispiel des Bosch-Konzeptes VDM}}}, year = {{2004}}, } @article{23335, author = {{Trächtler, Ansgar}}, journal = {{CTI-Konferenz "Federung und Dämpfung"}}, title = {{{Zusammenspiel von regelbaren Feder-/Dämpfersystemen mit ESP}}}, year = {{2004}}, } @article{23336, author = {{Trächtler, Ansgar}}, journal = {{2. VDI/VDE-Fachtagung zur Steuerung und Regelung von Fahrzeugen und Motoren AUTOREG}}, pages = {{463--473,}}, title = {{{Integrierte Fahrdynamikregelung mit ESP, aktiver Lenkung und aktivem Fahrwerk}}}, year = {{2004}}, } @article{23337, author = {{Verhagen, Armin and Futterer, Sylvia and Rupprecht, Josef and Trächtler, Ansgar}}, journal = {{Proc. FISITA}}, title = {{{Vehicle Dynamics Management - Benefits of Integrated Control of Active Brake, Active Steering and Active Suspension Systems}}}, year = {{2004}}, } @inproceedings{21780, author = {{Goetz, F. and Boenning, B. and Domik, Gitta}}, booktitle = {{Proc. of The 4th IASTED International Conference on Visualization, Imgaging, and Image Processing}}, title = {{{Mapping High Quality Textures on an Interactive Globe}}}, year = {{2004}}, } @inproceedings{8951, author = {{Fu, Bo and Hemsel, Tobias and Wallaschek, Jörg}}, booktitle = {{Proceedings of the 18th International Congress on Acoustics, ICA}}, pages = {{4--9}}, title = {{{Model-based Diagnosis for Sandwiched Ultrasonic Transducers}}}, year = {{2004}}, } @inproceedings{8952, abstract = {{In turbomachinery, friction contacts are widely used to reduce dynamic stresses in turbine blades in order to avoid expensive damages. As a result of energy dissipation in the friction contacts the blade vibration amplitudes are reduced. In case of so-called friction dampers, which are pressed on the platforms of the blades by centrifugal forces, the damping effect can be optimized by varying the damper mass. This optimization can be done by means of a simulation model applying the so-called component mode synthesis and the Harmonic Balance Method to reduce computation time. It is based on the modal description of each substructure. In a real turbine or compressor blading great differences in the magnitude of the individual blade amplitudes occur caused by unavoidable mistuning of all system parameters like contact parameters and natural frequencies of the blades. It may happen that most of the blades experience only small stresses whereas a few blades experience critical stresses. Therefore, it is necessary to consider mistuning for all system parameters to simulate the forced response of bladed disk assemblies with friction contacts. For a mistuned bladed disk the complete system has to be modeled to calculate the dynamic response. In practice, usually the standard deviations instead of the distributions of the system parameters are known. Therefore, Monte-Carlo simulations are necessary to calculate the forced response of the blades for given mean values and standard deviations of the system parameters. To reduce the computational time, an approximate method has been developed and extended for small and moderate standard deviations of the system parameters to calculate the distribution and the envelopes of the frequency response functions for statistically varying system parameters, in the following called statistical mistuning. The approximate method is based on a sensitivity analysis and the assumption of a Weibull distribution of the vibration amplitudes of the blades. Both, the approximate method and the assumption of a Weibull distribution of the vibration amplitudes are validated by Monte-Carlo simulations. By these investigations the influence of different arrangements of the system parameters for given mean values and standard deviations of the vibration amplitudes of the blades can be determined, too. For the present investigations only a small influence of the arrangement of blades with respect to their natural frequencies has been observed. On the other hand, an intentional mistuning of the damper masses and the natural frequencies of the blades in a systematic way, in the following called systematic mistuning, can be investigated to reduce the amplitudes of the system. The simulation results of a systematic mistuning has been validated by a test rig with a rotating bladed disk assembly with friction dampers. The investigations show a good agreement between the simulations and the measurements but only a slight decrease of the maximum amplitudes in case of a systematic mistuning. Copyright {\copyright} 2004 by ASME}}, author = {{Götting, Florian and Sextro, Walter and Panning, Lars and Popp, Karl}}, booktitle = {{Proceedings of ASME TURBO Expo, Power for Land, Sea, and Air}}, keywords = {{Friction, Disks}}, number = {{GT2004-53310}}, pages = {{257--267}}, title = {{{Systematic mistuning of bladed disk assemblies with friction contacts}}}, volume = {{6}}, year = {{2004}}, } @inproceedings{8953, author = {{Hemsel, Tobias}}, booktitle = {{Proceedings of the First International Conference on Ultrasonic Motors and Actuators (IWOUMA)}}, title = {{{Linear piezoelectric motors and their application}}}, year = {{2004}}, } @inproceedings{9519, abstract = {{Several positioning tasks demand translatory drive instead of rotary motion. To achieve drives that are capable e.g. to drive the sunroof of a car or to lift a car's window, multiple miniaturized motors can be combined. But in this case many other questions arise: the electromechanical behavior of the individual motors differs slightly, the motor characteristics are strongly dependent on the driving parameters and the driven load, many applications need some extra power for special cases like overcoming higher forces periodically. Thus, the bundle of motors has to act well organized and controlled to get an optimized drive that is not oversized and costly.}}, author = {{Hemsel, Tobias and Mracek, Maik and Wallaschek, Jörg and Vasiljev, Piotr}}, booktitle = {{Ultrasonics Symposium, 2004 IEEE}}, issn = {{1051-0117}}, keywords = {{drives, electromechanical effects, linear motors, ultrasonic motors, car sunroof, car window, electromechanical behavior, high power ultrasonic linear motors, multiple miniaturized motors, positioning tasks, translatory drive, Costs, Electromagnetic forces, Frequency, Laboratories, Manufacturing, Mechatronics, Micromotors, Ultrasonic imaging, Vibrations, Voltage}}, number = {{Vol.2}}, pages = {{1161--1164}}, title = {{{A novel approach for high power ultrasonic linear motors}}}, doi = {{10.1109/ULTSYM.2004.1417988}}, volume = {{2}}, year = {{2004}}, } @article{9520, abstract = {{Friction, especially friction of elastomers, can cause acoustic problems like noise, squeal and comfort drawbacks like vibrations and wear. Therefore, rubber friction affects the function of many products in technical applications, e.g. seals, belts and tires. It can be classified according to different physical phenomena like adhesion, hysteresis, cohesion and viscous friction, see [3]. The topic of this paper is hysteresis friction of rubber that is caused by the energy dissipation due to internal material damping during the process of deformation. The deformation itself occurs during the sliding of a rubber element across the micro-scaled asperities of a rough surface. In this paper, the sliding process of a rubber element over real surfaces is simulated in time domain and compared to experiments. ({\^A}{\copyright} 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)}}, author = {{Lindner, Markus and Sextro, Walter and Popp, Karl}}, issn = {{1617-7061}}, journal = {{PAMM}}, number = {{1}}, pages = {{101--102}}, publisher = {{WILEY-VCH Verlag}}, title = {{{Hysteretic Friction of a Sliding Rubber Element}}}, doi = {{10.1002/pamm.200410032}}, volume = {{4}}, year = {{2004}}, } @inproceedings{9521, author = {{Littmann, Walter and Hemsel, Tobias and Wallaschek, Jörg}}, booktitle = {{Proceedings of the 18th International Congress on Acoustics}}, pages = {{2889--2892}}, title = {{{Design criteria for piezoelectric transformers}}}, volume = {{4}}, year = {{2004}}, } @inproceedings{9522, author = {{Mracek, Maik and Wallaschek, Jörg and Hemsel, Tobias}}, booktitle = {{Proceedings of the 18th International Congress on Acoustics}}, pages = {{417--420}}, title = {{{Self configuration of miniature ultrasonic linear motors}}}, year = {{2004}}, } @inproceedings{9523, abstract = {{During operation, the rotating blades of a gas turbine are subjected to centrifugal forces as well as fluctuating gas forces, resulting in blade vibrations. In addition to material damping, aerodynamical and blade root damping, underplatform dampers are widely used to increase the amount of damping and to decrease blade vibration amplitudes. The friction forces generated by the relative displacements between the underplatform damper and the blade platforms provide a significant amount of energy dissipation. In practice, a number of different underplatform damper designs are applied. Basically, these are wedge dampers with flat contact areas, cylindrical dampers with curved surfaces or asymmetrical dampers with both flat contact surfaces on one side and curved contact surfaces on the other. The latter damper type combines the advantages of both the wedge and the cylindrical damper by preventing the damper from pure rolling on the one hand as it has been observed for cylindrical dampers and on the other hand, avoiding a diverged plane area contact in case of a wedge damper, causing a damper lift-off. This paper will focus on the investigation of cylindrical and asymmetrical underplatform dampers. A comparison between measurements of rotating assemblies in Siemens PG gas turbines (V84.2, V64.3A and V94.3A(2)) under test and real operating conditions with cylindrical and asymmetrical underplatform dampers and the predictions of the developed theoretical model are presented. Special attention is paid to the frequency shift due to the application of an underplatform damper, since in particular for stationary gas turbines, in addition to the amplitude reduction, the accurate prediction of the resonance frequency is of major interest. Copyright {\copyright} 2004 by ASME}}, author = {{Panning, Lars and Popp, Karl and Sextro, Walter and Götting, Florian}}, booktitle = {{Proceedings of ASME TURBO Expo, Power for Land, Sea, and Air}}, keywords = {{Dampers, Gas turbines}}, number = {{GT2004-53316}}, pages = {{269--280}}, title = {{{Asymmetrical Underplatform Dampers in Gas Turbine Bladings: Theory and Application}}}, doi = {{10.1115/GT2004-53316}}, volume = {{6}}, year = {{2004}}, } @inproceedings{9524, author = {{Fu, Bo and Hemsel, Tobias and Wallaschek, Jörg}}, booktitle = {{Proceedings of the 18th International Congress on Acoustics, ICA}}, pages = {{4--9}}, title = {{{Model-based Diagnosis for Sandwiched Ultrasonic Transducers}}}, year = {{2004}}, } @proceedings{7782, editor = {{Engels, Gregor and Seehusen, S.}}, number = {{P-52}}, publisher = {{Gesellschaft für Informatik (GI)}}, title = {{{Proceedings of "DeLFI 2004: Die 2. e-Learning Fachtagung Informatik", Paderborn (Germany)}}}, year = {{2004}}, } @proceedings{7783, editor = {{Engels, Gregor and Sauer, Stefan}}, number = {{6}}, publisher = {{World Scientific}}, title = {{{Modeling and Development of Multimedia Systems}}}, doi = {{http://dx.doi.org/10.1142/S021819400400183X}}, volume = {{14}}, year = {{2004}}, } @proceedings{7784, editor = {{Ehrig, Hartmut and Engels, Gregor and Parisi-Presicce, F. and Rozenberg, Grzegorz}}, publisher = {{Springer}}, title = {{{Proceedings of the 2nd International Conference on Graph Transformations (ICGT 2004), Rome (Italy)}}}, doi = {{http://dx.doi.org/10.1007/b100934}}, volume = {{3256}}, year = {{2004}}, } @inproceedings{7917, author = {{Schattkowsky, Tim and Loeser, Christoph and Müller, Wolfgang}}, booktitle = {{Proceedings of the 18th International Conference on Advanced Information Networking and Applications (AINA 2004), Fukuoka (Japan)}}, pages = {{611--616}}, publisher = {{IEEE Computer Society}}, title = {{{Peer-To-Peer Technology for Interconnecting Web Services in Heterogeneous Networks}}}, year = {{2004}}, } @inproceedings{7918, author = {{Baresi, Luciano and Heckel, Reiko and Thöne, Sebastian and Varró, Dániel}}, booktitle = {{Proceedings of the conference on Software Architecture (WICSA 2004), Oslo (Norway)}}, pages = {{155--166}}, publisher = {{IEEE Computer Society}}, title = {{{Style-Based Refinement of Dynamic Software Architectures}}}, year = {{2004}}, } @inproceedings{7919, author = {{Belli, Fevzi and Güldali, Baris}}, booktitle = {{Proceedings of the conference on Computer and Information Sciences (ISCIS 2004), Kemer-Antalya (Turkey)}}, pages = {{907--916}}, publisher = {{Springer}}, title = {{{Software Testing via Model Checking}}}, doi = {{http://dx.doi.org/10.1007/b101749}}, volume = {{3280}}, year = {{2004}}, } @inproceedings{7920, author = {{Heckel, Reiko and Guo, Ping}}, booktitle = {{Proceedings of the conference on Mobile Information Systems (MOBIS 2004), Oslo (Norway)}}, pages = {{65--79}}, publisher = {{Springer}}, title = {{{Conceptual Modeling of Styles For Mobile Systems: A layered approach based on graph transformation}}}, doi = {{dx.doi.org/10.1007/0-387-22874-8_5}}, volume = {{158}}, year = {{2004}}, } @inproceedings{7921, author = {{Heckel, Reiko and Cherchago, Alexey}}, booktitle = {{Proceedings of the seminar on Language Engineering for Model-Driven Software Development (2003), Dagstuhl (Germany)}}, publisher = {{Internationales Begegnungs- und Forschungszentrum für Informatik (IBFI)}}, title = {{{Application of Graph Transformation for Automating Web Service Discovery}}}, year = {{2004}}, } @inproceedings{7922, author = {{Schattkowsky, Tim and Müller, Wolfgang}}, booktitle = {{Proceedings of the 7th IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC 2004), Vienna (Austria)}}, pages = {{121--128}}, publisher = {{IEEE Computer Society}}, title = {{{Model-Based Design of Embedded Systems}}}, year = {{2004}}, } @inproceedings{7923, author = {{Cherchago, Alexey and Heckel, Reiko}}, booktitle = {{Proceedings of the conference on Graph Transformation (ICGT 2004), Rome (Italy)}}, pages = {{304--318}}, publisher = {{Springer}}, title = {{{Specification Matching of Web Services Using Conditional Graph Transformation Rules}}}, doi = {{http://dx.doi.org/10.1007/b100934}}, volume = {{3256 / 2004}}, year = {{2004}}, } @inproceedings{7924, author = {{Böttcher, Stefan and Groppe, Sven and Schattkowsky, Tim}}, booktitle = {{Proceedings of the 8th World Multi-Conference on Systemics, Cybernetics and Informatics (SCI 2004), Orlando, FL (USA)}}, title = {{{Automated Data and Service Mapping for Integrated Electronic Markets}}}, year = {{2004}}, } @inproceedings{7925, author = {{Eden, Jonas and Weber, Matthias and Reiser, Mark-Oliver and Wierczoch, Thomas and Freund, Ulrich and Gurrieri, Orazio and Küster, Jochen and Lönn, Henrik and Migge, Jörn}}, booktitle = {{Proceedings of the 14th International Symposium and 4th European Systems Engineering Conference (INCOSE 2004), Toulouse (France)}}, pages = {{101--112}}, title = {{{An Architecture Description Language for Developing Automotive ECU-Software}}}, year = {{2004}}, } @inproceedings{7926, author = {{Engels, Gregor and Sauer, Stefan}}, booktitle = {{International Journal of Software Engineering and Knowledge Engineering (IJSEKE)}}, number = {{6}}, pages = {{543--544}}, publisher = {{World Scientific Publishing}}, title = {{{Guest Editors' Introduction}}}, doi = {{http://dx.doi.org/10.1142/S021819400400183X}}, volume = {{14}}, year = {{2004}}, } @inproceedings{7927, author = {{Guo, Ping and Heckel, Reiko}}, booktitle = {{Proceedings of the 19th IEEE international conference on Automated software engineering (ASE 2004)}}, pages = {{430--433}}, publisher = {{IEEE Computer Society}}, title = {{{Modeling and Simulation of Context-Aware Mobile Systems}}}, year = {{2004}}, } @inproceedings{7928, author = {{Guo, Ping and Heckel, Reiko}}, booktitle = {{Proceedings of the 2nd International Fujaba Days (2004), Darmstadt (Germany)}}, title = {{{Simulation and Testing of Mobile Computing Systems using Fujaba}}}, year = {{2004}}, } @inproceedings{7929, author = {{Schattkowsky, Tim and Müller, Wolfgang}}, booktitle = {{Proceedings of the conference on Design Automation and Test in Europe (DATE 2004), Paris, France}}, pages = {{1392--1393}}, publisher = {{IEEE Computer Society}}, title = {{{Model-Based Specification and Execution of Embedded Real-Time Systems}}}, doi = {{http://doi.ieeecomputersociety.org/10.1109/DATE.2004.1269103}}, volume = {{2}}, year = {{2004}}, } @inproceedings{7930, author = {{Schattkowsky, Tim}}, booktitle = {{Proceedings of the 10th International Conference on Information Systems Analysis and Synthesis (ISAS 2004), Orlando, FL (USA)}}, title = {{{Direct Execution of UML 2.0 Sequence Diagrams}}}, year = {{2004}}, } @inproceedings{7931, author = {{Schattkowsky, Tim}}, booktitle = {{Proceedings of the conference on Systemics, Cybernetics and Informatics (SCI 2004), Orlando, FL (USA)}}, title = {{{Efficient Execution of UML State Machines on a Virtual Machine}}}, year = {{2004}}, } @inproceedings{7932, author = {{Hendrik Hausmann, Jan and Heckel, Reiko and Lohmann, Marc}}, booktitle = {{Proceedings of the IEEE International Conference on Web Services (ICWS 2004)}}, pages = {{324--331}}, publisher = {{IEEE Computer Society}}, title = {{{Model-based Discovery of Web Services}}}, doi = {{http://dx.doi.org/10.1109/ICWS.2004.80}}, year = {{2004}}, } @inproceedings{7933, author = {{Schattkowsky, Tim and Loeser, Christoph and Müller, Wolfgang}}, booktitle = {{Proceedings of the International Conference on Networking (ICN 2004), Guadeloupe (France)}}, publisher = {{IEEE Computer Society}}, title = {{{Peer-to-Peer-based Web Services for Collaborative Engineering Environments}}}, year = {{2004}}, } @article{8248, author = {{Krauter, Stefan and Ochs, F.}}, journal = {{Renewable Energy}}, number = {{2}}, pages = {{153--164}}, title = {{{Integrated Solar Home System}}}, volume = {{29}}, year = {{2004}}, } @article{8249, author = {{Krauter, Stefan and Rüther, R.}}, journal = {{Renewable Energy Vol. 29, Issue 3 (2004), S. 345–355.}}, number = {{3}}, pages = {{345--355}}, title = {{{Considerations for the Calculation of Greenhouse Gas Reduction by Photovoltaic Solar Energy}}}, volume = {{29}}, year = {{2004}}, } @article{8253, author = {{Krauter, Stefan}}, journal = {{Solar Energy Materials & Solar Cells}}, pages = {{119--130}}, title = {{{Development of an integrated solar home system}}}, volume = {{82}}, year = {{2004}}, } @article{8254, author = {{Krauter, Stefan}}, journal = {{Solar Energy Materials & Solar Cells}}, pages = {{1331--137}}, title = {{{Increased electrical yield via water flow over the front of photovoltaic panels}}}, volume = {{82}}, year = {{2004}}, } @article{8290, author = {{Krauter, Stefan and Depping, T.}}, journal = {{Solar Energy Materials & Solar Cells}}, pages = {{139--150}}, title = {{{Remote PV-system monitored via satellite}}}, volume = {{82}}, year = {{2004}}, } @inproceedings{8291, author = {{Krauter, Stefan}}, booktitle = {{Words into Action – The International Conference for Renewable Energies – Bonn 2004, Faircount, London (UK), S. 175}}, title = {{{Future Visions}}}, year = {{2004}}, } @inproceedings{8292, author = {{Krauter, Stefan}}, booktitle = {{Proceedings of the Second World Renewable Energy Forum, Eurosolar, Bonn (Deutschland), 29.–31. Mai 2004}}, title = {{{Renewable Energies in Latin America}}}, year = {{2004}}, } @inproceedings{8293, author = {{Krauter, Stefan}}, booktitle = {{Proceedings of the 19th European Photovoltaic Solar Energy Conference and Exhibition, Paris (Frankreich), 7.–11. Juni 2004, S. 2399–2402}}, title = {{{Enhanced Integrated Solar Home System}}}, year = {{2004}}, } @inproceedings{8294, author = {{Krauter, Stefan}}, booktitle = {{Proceedings of the 19th European Photovoltaic Solar Energy Conference and Exhibition, Paris (Frankreich), 7.–11. Juni 2004, S. 3523–3526}}, title = {{{Photovoltaics in the Context of Carbon Trading}}}, year = {{2004}}, }