@inbook{36078, author = {{Schlegel-Matthies, Kirsten}}, booktitle = {{Heterogenität als Chance. Vom produktiven Umgang mit Gleichheit und Differenz in der Schule}}, editor = {{Bräu, Karin and Schwerdt, Ulrich}}, pages = {{197–217}}, publisher = {{Lit-Verlag}}, title = {{{Fachdidaktische Perspektiven auf den Umgang mit Heterogenität im haushaltsbezogenen Unterricht}}}, year = {{2005}}, } @article{26152, abstract = {{A model for simulation of the three-dimensional morphology of nano-structured aggregates formed by concurrent coagulation and sintering is presented. Diffusion controlled cluster–cluster aggregation is assumed to be the prevailing coagulation mechanism which is implemented using a Monte–Carlo algorithm. Sintering is modeled as a successive overlapping of spherical primary particles, which are allowed to grow as to preserve overall mass. Simulations are characterized by individual ratios τ of characteristic collision to fusion time. A number of resulting aggregate-structures is displayed and reveals structure formation by coagulation and sintering for different values of τ. These aggregates are described qualitatively and quantitatively by their mass fractal dimension Df and radius of gyration. The fractal dimension increases from 1.86 for pure aggregation to ≈ 2.75 for equal characteristic time scales. As sintering turns out to be more and more relevant, increasingly compact aggregates start to form and the radius of gyration decreases significantly. The simulation results clearly reveal a strong dependence of the fractal dimension on the kinetics of the concurrent coagulation and sintering processes. Considering appropriate values of Df in aerosol process simulations may therefore be important in many cases.}}, author = {{Schmid, Hans-Joachim and Tejwani, Saurabh and Artelt, Christian and Peukert, Wolfgang}}, issn = {{1388-0764}}, journal = {{Journal of Nanoparticle Research}}, number = {{6}}, pages = {{613--626}}, title = {{{Monte Carlo simulation of aggregate morphology for simultaneous coagulation and sintering}}}, doi = {{10.1007/s11051-004-2161-x}}, volume = {{6}}, 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}}, } @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}}, } @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{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{853, author = {{Typpö, Ville and Eisl, Jochen and Höller, Jan and Agüero, Ramon and Karl, Holger}}, booktitle = {{Broadband Satellite Comunication Systems and the Challenges of Mobility - IFIP TC6 Workshops on Broadband Satellite Communication Systems and Challenges of Mobility, World Computer Congress, August 22-27, 2004, Toulouse, France}}, pages = {{145----155}}, title = {{{Research Challenges in Mobility and Moving Networks: An Ambient Networks View}}}, doi = {{10.1007/0-387-24043-8_15}}, year = {{2004}}, } @inproceedings{854, author = {{Frank, Christian and Karl, Holger}}, booktitle = {{Proceedings of the 7th International Symposium on Modeling Analysis and Simulation of Wireless and Mobile Systems, MSWiM 2004, Venice, Italy, October 4-6, 2004}}, pages = {{105----114}}, title = {{{Consistency challenges of service discovery in mobile ad hoc networks}}}, doi = {{10.1145/1023663.1023684}}, year = {{2004}}, } @inproceedings{16803, author = {{Goetz, Frank and Domik, Gitta}}, booktitle = {{Cooperative Design, Visualization, and Engineering, First International Conference, (CDVE) 2004, Palma de Mallorca, Spain, September 19-22, 2004, Proceedings}}, editor = {{Luo, Yuhua}}, pages = {{38--46}}, publisher = {{Springer}}, title = {{{openVisaar: Enriching Cooperative Visualization by Combining Open Technologies}}}, doi = {{10.1007/978-3-540-30103-5_5}}, volume = {{3190}}, year = {{2004}}, } @inproceedings{16804, author = {{Goetz, Frank and Borau, Ralf and Domik, Gitta}}, booktitle = {{Proceeding of the Ninth International Conference on 3D Web Technology, Web3D 2004, Monterey, California, USA, April 5-8, 2004}}, editor = {{P. Brutzman, Donald and Chittaro, Luca and Puk, Richard}}, pages = {{87--97}}, publisher = {{{ACM}}}, title = {{{An XML-based visual shading language for vertex and fragment shaders}}}, doi = {{10.1145/985040.985054}}, year = {{2004}}, } @inbook{36082, author = {{Schlegel-Matthies, Kirsten}}, booktitle = {{Die Revolution am Esstisch. Neue Studien zur Nahrungskultur im 19./20. Jahrhundert}}, editor = {{Teuteberg, Hans-Jürgen}}, isbn = {{9783515084475}}, pages = {{148–161}}, publisher = {{Steiner-Verlag}}, title = {{{„Liebe geht durch den Magen“: Mahlzeit und Familienglück im Strom der Zeit}}}, year = {{2004}}, } @misc{18487, author = {{Peckhaus, Volker}}, booktitle = {{zbMATH Open, Zbl. 1030.01021}}, title = {{{Sundholm, Göran, “Frege, August Bebel and the Return of Alsace-Lorraine: The Dating of the Distinction between Sinn and Bedeutung”, History and Philosophy of Logic 22 (2001), 57–73}}}, year = {{2004}}, } @misc{18489, author = {{Peckhaus, Volker}}, booktitle = {{zbMATH Open, Zbl. 1030.03002}}, title = {{{Klement, Kevin C., “Russell’s Paradox in Appendix B of the Principles of Mathematics: Was Frege’s Response Adequate?”, History and Philosophy of Logic 22 (2001), 13-28}}}, year = {{2004}}, } @inproceedings{54143, abstract = {{Besides to classical research area of bioinformatics, the turn to nature for solutions to technological questions has brought us many unforeseen great concepts. This encouraging course seems to hold on for many aspects in technology. Many efforts were made in the area of computer technology employing mechanisms known from biological systems. The most known examples are evolutionary algorithms and the artificial immune system. One application is in network security, e.g. for the search for viruses and worms, where the immune system was used as an inspiration.In contrast, the focus of our group lays on trying to map the cellular and molecular biology to networking architectures. Recently, it was shown that the known approaches to study effects in computer networking, especially methods to analyze the behavior of large scale networks suffer from many presumptions. We try to study this behavior by analyzing the internal functioning of network components as well as there interactions in comparison with cellular systems and the associated intra and extra cellular signaling pathways.The main focus of this work is to show the similarities of computer networks and cellular systems. Based on the knowledge about cellular metabolism, new concepts for the behavior patterns of routers, monitor systems, and firewalls can be deduced and the efficiency of individual sub-systems can be increased. Focusing on examples of hot topics in the computer society, i.e. network security, potential solutions motivated by cellular behavior are currently studied and, hopefully, will soon bring new results in these areas.Independently from these examinations, we try to show the power of our novel approach by introducing the basic mechanisms and interactions as well as a self-evident application. Doing this, we must keep in mind that the deeper the parallels between biology and technology, the more important it is to map the corresponding elements correctly.}}, author = {{Dressler, Falko and Krueger, Bettina}}, booktitle = {{German Conference on Bioinformatics 2004 (GCB 2004), Poster Session}}, title = {{{Cell biology as a key to computer networking}}}, year = {{2004}}, } @inproceedings{54940, abstract = {{Autonomous networking has become the buzzword for attempts of building high-scalable network architectures, which are self-organizing, self-maintaining and self-healing. Few of these approaches were successful and none has shown to provide all the promised functions. We try to study the processes in computer networks using molecular processes as the paradigm. This novel approach shows many similarities between computer networking and cellular mechanisms. In this paper, we focus on the area of network security as one research area with high demand for high-scalable mechanisms providing the needed functionality. After identifying similarities between nature and technology, we discuss potential research domains, which are high potentials for learning directly from biology at the example of security attacks in networks. We see the proposed mechanism as a generic approach for autonomous networking. The countermeasures against attacks in computer networks are only a special example to introduce the mechanisms.}}, author = {{Krueger, Bettina and Dressler, Falko}}, booktitle = {{International IPSI Stockholm Conference: Symposium on Challenges in the Internet and Interdisciplinary Research (IPSI 2004)}}, title = {{{Molecular Processes as a Basis for Autonomous Networking}}}, year = {{2004}}, } @inproceedings{39055, abstract = {{We present a rigorous but transparent semantics definition of SystemVerilog that covers processes with blocking and non-blocking statements as well as their interaction with the simulation scheduler including the management of new SystemVerilog regions. We present our definition in form of distributed Abstract State Machines (ASMs) rules reflecting the view given in the SystemVerilog Language Reference Manual [1]. Our formal semantics is a concise, unambiguous, high-level specification for SystemVerilog-based implementations and for investigation of interoperabilities of SystemVerilog with SpecC, SystemC, and VHDL.}}, author = {{Zambaldi, Martin and Ecker, Wolfgang and Kruse, Thilo and Müller, Wolfgang}}, booktitle = {{Proceedings of FDL’04}}, location = {{Lille, France}}, title = {{{The Formal Simulation Semantics of SystemVerilog}}}, year = {{2004}}, } @inproceedings{39063, author = {{Müller, Wolfgang and Paelke, Volker}}, booktitle = {{Proceedings of the Simulation and Visualisation 2004}}, title = {{{A Formal Model of a Framework for Simulation-Based Animation}}}, year = {{2004}}, }