@inproceedings{19692, author = {{Briest, Patrick and Brockhoff, Dimo and Degener, Bastian and Englert, Matthias and Gunia, Christian and Heering, Oliver and Jansen, Thomas and Leifhelm, Michael and Plociennik, Kai and Röglin, Heiko and Schweer, Andrea and Sudholt, Dirk and Tannenbaum, Stefan and Wegener, Ingo}}, booktitle = {{Parallel Problem Solving from Nature - PPSN VIII}}, isbn = {{9783540230922}}, issn = {{0302-9743}}, title = {{{The Ising Model: Simple Evolutionary Algorithms as Adaptation Schemes}}}, doi = {{10.1007/978-3-540-30217-9_4}}, year = {{2004}}, } @inproceedings{19693, author = {{Schweer, Andrea and Leifhelm, Michael and Degener, Bastian and Heering, Oliver and Tannenbaum, Stefan and Röglin, Heiko and Gunia, Christian and Englert, Matthias and Briest, Patrick and Sudholt, Dirk and Brockhoff, Dimo and Wegener, Ingo and Jansen, Thomas and Plociennik, Kai}}, booktitle = {{Parallel Problem Solving from Nature - PPSN VIII}}, title = {{{Experimental Supplements to the Theoretical Analysis of EAs on Problems from Combinatorial Optimization}}}, year = {{2004}}, } @inbook{19706, author = {{Büker, Petra}}, booktitle = {{Interkulturell lernen – erziehen – bilden (Paderborner Beiträge zur Unterrichtsforschung und Lehrerbildung, Bd. 8)}}, editor = {{Köller, Katharina and Grosse-Holthaus, Marlies}}, publisher = {{LIT-Verlag}}, title = {{{Dokumentationsschrift zum Paderborner Grundschultag 2003}}}, volume = {{8}}, year = {{2004}}, } @inproceedings{19800, abstract = {{Redundant arrays of independent disks, also called RAID arrays, have gained a wide popularity in the last twenty years. Most of the disks used in the server market are currently based on RAID technology. The primary reason for introducing RAID technology in 1988 has been the fact that large disk systems have become much slower and more expensive than the connection of a large number of inexpensive disks and the use of them as an array. The times seem to repeat themselves. Today, large scale RAID arrays have become incredible big and expensive. It seems that it makes sense to replace them by a collection of smaller and inexpensive arrays of JBODs or mid-ranged RAID arrays. In this paper we will show that combining these systems with state-of-the-art virtualization technology can lead to a system that is faster and less expensive than an enterprise storage system, while being as easy to manage and as reliable. Therefore we will outline the most important features of storage management and compare there realization in enterprise class storage systems and in current and future virtualization environments.}}, author = {{Brinkmann, André and Salzwedel, Kay and Vodisek, Mario}}, booktitle = {{Proceedings of the international workshop on Storage network architecture and parallel I/Os - SNAPI '04}}, pages = {{9--16}}, title = {{{A case for virtualized arrays of RAID}}}, doi = {{10.1145/1162628.1162630}}, year = {{2004}}, } @inproceedings{19807, abstract = {{Wireless connectivity is state of the art for local area networks. Currently, most W-LAN networks rely on a centralized design with access points routing all inner and outbound traffic. These access points are intrinsic communication bottlenecks. Mobile Ad Hoc Networks (MANET) overcome this problem, because every participant works as well as a simple node and as a router. Current MANETs are restricted in scalability, because they rely on flooding mechanisms or complete routing tables. Other approaches, providing better scalability use clustering, yet network performance deteriorates in case of high node mobility. We describe the design of a PAMANET, the Paderborn Mobile Ad Hoc Network, a MANET overcoming these problems providing scalability and reliability in a mobile scenario. When implemented, PAMANET works with standard W-LAN IEEE 802.11 radio devices, provides IPv6 communication interfaces and works on personal computers under a standard Linux distribution. First, we present current routing protocols and classify them with respect to scalability and stability in dynamically evolving MANETs. Then, we discuss related research in the area of distributed hash tables and consistent hashing, used for relieving hot spots in the Web, storage area networks and peerto-peer networks, which inspires the design of PAMANET. PAMANET consists of three main components: First, the embedding of the routing layer into IEEE 802.11 and IPv6 by using techniques used at the ad hoc support library (aslib) by Gupta et al. Second, the routing layer which combines a landmark routing, hierarchical clustering, consistent hashing for providing location dependent addresses and lookup-service for the location of nodes. Third, a peerto-peer data storage system based on egoistic distributed caches enabling hop and traffic efficient data access on replicated data partitions.
The routing layer incorporates a variety of new approaches. Link distances reflect the failure probability of links, which is estimated by the reciprocal age of the link. Then, we combine a landmarking system on this metric with the hierarchical layer graph yielding small landmark addresses and small routing tables. To balance the load of the distributed lookup-service for landmark addresses, a hierarchical weighted consistent hashing scheme is used. This ensures that each node receives an equal part of all landmark addresses. Using these mechanisms (regularly and on demand) PAMANET adjusts IPv6 routing tables such that short stable routes are preferred. For the distribution of control data like landmark information PAMANET uses a message box system interface to provide fast one-hop communication. On top of this system, PAMANET provides a peer-to-peer data storage and lookup system that realizes time, traffic, and load efficient access using egoistic caches and data segmentation strategies.}}, author = {{Schindelhauer, Christian and Böttcher, Stefan and Rammig, Franz}}, booktitle = {{Proceedings of the second international workshop on Mobility management & wireless access protocols}}, isbn = {{1581139209}}, title = {{{The design of PaMaNet the Paderborn mobile ad-hoc network}}}, doi = {{10.1145/1023783.1023807}}, year = {{2004}}, } @inproceedings{19851, abstract = {{The Internet-SCSI protocol [iSCSI] allows a client to interact with a remote SCSI-capable target by means of block-oriented commands encapsulated within TCP/IP packets. Thereby, iSCSI greatly simplifies storage virtualization, since clients can access storage in a unified manner, no matter whether the I/O-path is short or long distance. Intermediate devices located on the path between a client and a target can easily intercept iSCSI sessions and rewrite packets for the sake of load balancing, prefetching, or redundancy, to mention just a few beneficial applications. Within this paper we describe the design and implementation of such an iSCSI capable intermediate device that deploys prefetching strategies in combination with redundant disks to reduce average I/O-latency. Depending on its location within the network, this virtualization and prefetching device can hide wide area access latency and reduce network contention targeting remote SCSI-devices to a large extent.}}, author = {{Bleckmann, Peter and Schomaker, Gunnar and Slowik, Adrian}}, booktitle = {{Proceeding of International Workshop on Storage Network Architecture and Parallel I/O}}, number = {{2}}, pages = {{40--47}}, title = {{{Virtualization with prefetching abilities based on iSCSI}}}, doi = {{10.1145/1162628.1162634}}, year = {{2004}}, } @article{19879, author = {{Klein, Jan and Zachmann, Gabriel}}, journal = {{Computers and Graphics}}, number = {{6}}, pages = {{839--850}}, title = {{{Point Cloud Surfaces using Geometric Proximity Graphs}}}, doi = {{10.1016/j.cag.2004.08.012}}, volume = {{28}}, year = {{2004}}, } @inproceedings{19883, author = {{Klein, Jan and Zachmann, Gabriel}}, booktitle = {{Eurographics Symposium on Point-Based Grahics (SPBG'04)}}, pages = {{131--138}}, title = {{{Proximity Graphs for Defining Surfaces over Point Clouds}}}, year = {{2004}}, } @inproceedings{19889, author = {{Klein, Jan and Zachmann, Gabriel}}, booktitle = {{SIGGRAPH 2004, Sketches}}, title = {{{Nice and Fast Implicit Surfaces over Noisy Point Clouds}}}, year = {{2004}}, } @inproceedings{19891, author = {{Klein, Jan and Zachmann, Gabriel}}, booktitle = {{Computer Graphics Forum (Proceedings of EUROGRAPHICS 2004)}}, pages = {{567--576}}, title = {{{Point Cloud Collision Detection}}}, year = {{2004}}, } @inproceedings{19924, abstract = {{Juli 2004}}, author = {{Büker, Petra}}, title = {{{Kompetenzprofil Grundschullehrerin: Workshop im Rahmen des Berufsorientierungstages für BA/MA Studierende an der Universität Bielefeld}}}, year = {{2004}}, } @inproceedings{1993, author = {{Kao, Odej and Hovestadt, Matthias and Keller, Axel}}, booktitle = {{Proc. Advanced Research Workshop on High Perfomance Computing: Technology and Applications}}, title = {{{SLA-aware Job Migration in Grid Environments}}}, year = {{2004}}, } @inproceedings{1994, author = {{Burchard, Lars-Olof and Heiss, Hans-Ulrich and Hovestadt, Matthias and Kao, Odej and Keller, Axel and Linnert, Barry}}, booktitle = {{Proceedings of the GI-Meeting on Operating Systems}}, title = {{{An Architecture for SLA-aware Resource Management}}}, year = {{2004}}, } @inproceedings{1995, abstract = {{The next generation Grid will demand the Grid middleware to provide flexibility, transparency, and reliability. This implies the appliance of service level agreements to guarantee a negotiated level of quality of service. These requirements also affect the local resource management systems providing resources for the Grid. At this a gap between these demands and the features of today's resource management systems becomes apparent. In this paper we present an approach which closes this gap. Introducing the architecture of the virtual resource manager we highlight its main features of runtime responsibility, resource virtualization, information hiding, autonomy provision, and smooth integration of existing resource management system installations.}}, author = {{Burchard, Lars-Olof and Hovestadt, Matthias and Kao, Odej and Keller, Axel and Linnert, Barry}}, booktitle = {{Proc. Int. Symposium on Cluster Computing and the Grid (CCGRID)}}, title = {{{Virtual Resource Manager: An Architecture for SLA-aware Resource Management}}}, doi = {{10.1109/CCGrid.2004.1336558}}, year = {{2004}}, } @inproceedings{28184, author = {{Bloh, Bea and Schürer, Sina and van Ophuysen, Stefanie}}, title = {{{Elterliche Prädiktoren für die Ablehnung von Schullaufbahnempfehlungen}}}, year = {{2004}}, } @inproceedings{2415, abstract = {{In this paper we introduce to virtualization of hardware on reconfigurable devices. We identify three main approaches denoted with temporal partitioning, virtualized execution, and virtual machine. For each virtualization approach, we discuss the application models, the required execution architectures, the design tools and the run-time systems. Then, we survey a selection of important projects in the field. }}, author = {{Plessl, Christian and Platzner, Marco}}, booktitle = {{Proc. Int. Conf. on Engineering of Reconfigurable Systems and Algorithms (ERSA)}}, keywords = {{hardware virtualization}}, pages = {{63--69}}, publisher = {{CSREA Press}}, title = {{{Virtualization of Hardware – Introduction and Survey}}}, year = {{2004}}, } @inproceedings{2416, author = {{Groppe, Sven and Böttcher, Stefan and Birkenheuer, Georg}}, booktitle = {{Proc. Int. Conf. on Enterprise Information Systems (ICEIS)}}, pages = {{241--250}}, title = {{{Efficient Querying of Transformed XML Documents}}}, year = {{2004}}, } @inproceedings{2417, author = {{Groppe, Sven and Böttcher, Stefan and Heckel, Reiko and Birkenheuer, Georg}}, booktitle = {{Proc. East-European Conf. on Advances in Databases and Information Systems (ADBIS)}}, title = {{{Using XSLT Stylesheets to Transform XPath Queries}}}, year = {{2004}}, } @techreport{2594, author = {{Betz, Stefan}}, title = {{{Programmorientierte Materialbedarfsermittlung auf Basis der Fuzzy-Set-Theorie}}}, volume = {{02}}, year = {{2004}}, } @book{2595, editor = {{Betz, Stefan}}, title = {{{E-Business im industriellen Management - Theoretische Fundierung und praktische Umsetzung im Mittelstand}}}, year = {{2004}}, }