Michael Hermann, PAX A Semantically Annotated Publication Database Using Ajax, University of Zurich, Faculty of Economics, Business Administration and Information Technology, 2007. (Master's Thesis)
Web applications for managing scientific publications on an institute's, research group's, and researcher's homepage can hardly be found. This thesis presents the implementation of such a Web Application called PAX. It makes use of Ajax for providing a user friendly interface, supporting drag and drop as well as dynamic changes of the Web pages. It handles the import of BibTeX files as well as the export formats BibTeX and CSV. The semantic annotation, which is available in RDF and RDFa, follows the SWRC-unizh ontology, which is an extension of the SWRC ontology. An approach for incorporating the generation of semantic data into a Web application is presented. |
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Hans Jäckle, Autonomous Motion And Obstacle Detection For The Robosuitcase 015, University of Zurich, Faculty of Economics, Business Administration and Information Technology, 2007. (Master's Thesis)
In this assignment an obstacle avoidance algorithm for the robotic suitcase Robosuitcase 015 will be developed. After an introduction into the underlying theories and an analysis of the status-quo of the project, appropriate sensors will be searched and built in. Based on this an obstacle avoidance algorithm will be developed and implemented. With a series of tests the functionality of the obstacle avoidance algorithm will be verified and the used strategies will be optimized. |
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Simon Lützelschwab, Case-based Reasoner for OWL-S Web Services, University of Zurich, Faculty of Economics, Business Administration and Information Technology, 2007. (Master's Thesis)
This thesis explores a novel approach to use techniques found in Case-based Reasoner Systems and apply them to the Semantic Web. In the context of the Web Service Ontology OWL-S, a framework following the principles of Case-based Reasoning is introduced. A suitable case structure is defined that builds the basis of the system. Furthermore, various similarity strategies are implemented to determine the appropriate selection of suitable cases based on the novel problem presented to the system. Similarity is measured using semantic, syntactic and graph measurements. Additionally, different adaption strategies are introduced to facilitate the reuse process. The framework's architecture allows for custom extension of additional similarity and adaption strategies in the future. |
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Markus Sonderegger, Sea Cage Gateway — Optimal Mobile Grid Support in Aquaculture, University of Zurich, Faculty of Economics, Business Administration and Information Technology, 2007. (Master's Thesis)
Competition in the economic world has turned harder. New ways of communication enable global access to markets. This phenomenon yields product markets which were impossible to reach. In order to prevail in this challenging environment, enterprises need to adapt established organizational structures. Consequently, a shift in focus towards core competen¬cies can observed. The virtual organization is a possible organizational structure to meet these new requirements. In an environment with mobile or nomadic users, the virtual orga¬nization concept is extended by mobility and increased dynamics, which results in the notion of Mobile Dynamic Virtual Organizations (MDVO). From a technical point of view, MDVOs are best implemented applying mobile grid technology. Accordingly, the main objective of this thesis is to identify the economic potential of MDVOs and mobile grids. Norway's aquaculture domain is the favored application field for this evaluation. The thesis gives an outline on the relevant set of related topics. Three sce¬narios for exemplary implementation of a mobile grid are introduced. The key technical and economic requirements are determined to assess the scenarios from a conceptual viewpoint. For further assessment, the applicable scenario is chosen based on a qualitative require¬ments evaluation. This scenario is modeled with the help of an established business model¬ing tool which leads to an in-depth quantitative assessment by means of corporate finance methods. This allows a detailed economic inspection of a mobile grid implementation applied in Norwegian aquaculture. |
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Jürg Syz, Markus Leippold, Trend derivatives: pricing, hedging, and application to executive stock options, Journal of Futures Markets, Vol. 27 (2), 2007. (Journal Article)
Both institutional and private investors often have only limited flexibility in timing their investment decision. They look for investments that will ideally be independent of the timing decision. In this article, a new class of derivative products whose payoff is linked to the trend of the underlying instrument is introduced. By linking the trend to the payoff, the timing of the decision becomes less important. Therefore, trend derivatives offer some time-diversification benefits. How trend derivatives are designed and priced is shown. Due to their peculiar features, trend derivatives offer some interesting applications such as executive stock option plans. |
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Gregory S. Crawford, Matthew Shum, Monopoly quality degradation and regulation in cable television, The Journal of Law and Economics, Vol. 50 (1), 2007. (Journal Article)
Using an empirical framework based on the Mussa-Rosen model of monopoly quality choice, we calculate the degree of quality degradation in cable television markets and the impact of regulation on those choices. We find lower bounds of quality degradation ranging from 11 to 45 percent of offered service qualities. Furthermore, cable operators in markets with local regulatory oversight offer significantly higher quality, less degradation, and greater quality per dollar, despite higher prices. |
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Nathan Labhart, Shuhei Miyashita, Adaptation of a distributed controller depending on morphology, In: Proc. of the 12th Artificial Life and Robotics (AROB), Beppu, Japan, 2007. (Conference or Workshop Paper published in Proceedings)
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Lorenz Hilty, The material side of virtualization, In: ITEE 2007, Springer, Berlin, Heidelberg, 2007-01-23. (Conference or Workshop Paper)
The Environmental Informatics community could recently celebrate its 20th anniversary. The application of Information and Communication Technology (ICT) to problems of environmental research and management has made considerable progress and contributes to sustainable development. Moreover, ICT has the potential to virtualize processes that would otherwise consume considerable amounts of material and energy; virtual meetings, for instance, could avoid 97-98% of the CO2 emissions of physical meetings.The time, space, material and energy needed to provide a unit of ICT service have roughly decreased by a factor of 1000 since the first PC was sold. It seems therefore natural that researchers and industries using ICT in the environmental field ignore the environmental impacts caused by ICT hardware – they are just negligible compared to the environmental benefits that can be realized with the applications.Paradoxically, it is the progress in ICT hardware efficiency that has made ICT a part of the problem, too. The global mass and energy flows caused throughout the hardware life cycle are increasing due to the wide-spread use of ICT products and their decreasing useful lives. The environ-mental problems caused by the production, use and disposal of ICT hard-ware are solvable in principle; they are not as hard as the discrepancy between - e.g. - growing mobility and CO2 reduction goals. But problems can only be solved if they are not neglected. |
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Martin Glinz, Christian Seybold, Silvio Meier, Simulation-Driven Creation, Validation and Evolution of Behavioral Requirements Models, In: Proceedings of the Dagstuhl-Workshop Modellbasierte Entwicklung eingebetteter Systeme (MBEES 2007), TU Braunschweig, Germany, 2007. (Conference or Workshop Paper published in Proceedings)
Abstract: Requirements models for large systems cannot be developed in a single step; they evolve in a sequence of iterations. We have developed a simulationdriven process that supports iterative, volutionary modeling of behavioral requirements. We start with modeling type scenarios (i.e. use cases) and simulate these interactively. The simulation runs yield exemplary system behavior, which is
documented in message sequence charts (MSCs). The modeler can then generalize this recorded partial behavior into statecharts. The resulting model is simulated again for validating that the modeled behavior matches the previously recorded behavior. The validated model is then used in the next incremental step for eliciting new, yet unspecified behavior by simulating new scenarios. |
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Sven Seuken, Shlomo Zilberstein, Memory-Bounded Dynamic Programming for DEC-POMDPs, In: Proceedings of the 20th International Joint Conference on Artificial Intelligence (IJCAI), Hyderabad, India, 2007. (Conference or Workshop Paper published in Proceedings)
Decentralized decision making under uncertainty
has been shown to be intractable when each agent
has different partial information about the domain.
Thus, improving the applicability and scalability
of planning algorithms is an important challenge.
We present the first memory-bounded dynamic programming
algorithm for finite-horizon decentralized
POMDPs. A set of heuristics is used to identify
relevant points of the infinitely large belief
space. Using these belief points, the algorithm
successively selects the best joint policies for each
horizon. The algorithm is extremely efficient, having
linear time and space complexity with respect
to the horizon length. Experimental results show
that it can handle horizons that are multiple orders
of magnitude larger than what was previously possible,
while achieving the same or better solution
quality. These results significantly increase the applicability
of decentralized decision-making techniques. |
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Helmut Max Dietl, Egon Franck, Wie im Baseball Statistik über Intuition siegt, In: Neue Zürcher Zeitung, 3, p. 51, 4 January 2007. (Newspaper Article)
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Marco Prestipino, Felix-Robinson Aschoff, Gerhard Schwabe, How up-to-date are online tourism communities? An empirical evaluation of commercial and non-commercial information quality, In: 40. HICCS Hawaii International Conference on System Sciences, IEEE, HICSS - Hawaii International Conference on System Science, Vol. 40, 2007-01-03. (Conference or Workshop Paper published in Proceedings)
While social and economic aspects of online communities have been investigated broadly, the information exchanged has seldom been the subject of study. The article follows recent work on using an information systems metaphor for online communities: users specify queries and receive information from the online community members. In order to justify this metaphor, information needs to be at least up to classic information products. In this paper we present a framework for the evaluation of timeliness in online communities. An empirical study is presented which compares aspects of timeliness, namely up-to-dateness, for a wiki community and a printed guidebook. Results show that the community is at least as up-to-date as the printed guidebook. While further research is needed, results indicate that online communities can be used as information systems with reasonable information quality values. |
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Deepinder S Bajwa, L Floyd Lewis, Graham Pervan, Vincent Lai, Bjorn E Munkvold, Gerhard Schwabe, Organizational assimilation of collaborative information technologies: Global comparisons, In: 40. HICCS Hawaii International Conference on System Sciences, IEEE, HICCS - Hawaii International Conference on System Sciences, 2007-01-03. (Conference or Workshop Paper published in Proceedings)
This paper reports on a global initiative to investigate the assimilation of collaborative information technologies (CITs) in task-oriented collaboration. The two classes of CITs explored include conferencing and groupware technologies. Based upon the level of technology access/availability and utilization, four assimilation states are identified. Data collected from 538 organizations in the US, Australia, Hong Kong, Norway, and Switzerland is mapped in the four CIT assimilation states. The results indicate that the assimilation patterns of conferencing and groupware technologies vary across the study regions. Overall analyses of the organizational antecedents of CIT assimilation indicate that function integration and promotion of collaboration are significantly associated with the assimilation of conferencing and groupware technologies. Organization size and information technology (IT) function size, on the other hand, were found to be significantly associated only with the assimilation of conferencing technologies. Implications of our findings are discussed for practice and research. |
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Paul Bourgade, Ashkan Nikeghbali, Alain Rouault, The characteristic polynomial on compact groups with Haar measure: some equalities in law, Comptes Rendus Mathematique, Vol. 345 (4), 2007. (Journal Article)
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Ashkan Nikeghbali, Non-stopping times and stopping theorems, Stochastic Processes and their Applications, Vol. 117 (4), 2007. (Journal Article)
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Arnold Picot, Egon Franck, Helmut Max Dietl, Shinseidoha ni goru: Soshiki-nyumon - shijou, Soshiki, Soshikikan kankei heno apurochi, Hakutou Shobou, Tokyo, 2007. (Book/Research Monograph)
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Nir Jaimovich, Firm Dynamics and Markup Variations: Implications for Multiple Equilibria and Endogenous Economic Fluctuations , Journal of Economic Theory, 2007. (Journal Article)
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Nir Jaimovich, Sergio Rebelo, Behavioral Theories of the Business Cycle, Journal of the European Economic Association, 2007. (Journal Article)
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Markus Menz, Jochen Menges, Lydia Ebersbach, Mergers & Acquisitions - Von der Strategie zur Integration, In: Mergers & Acquisitions - Von der Strategie zur Integration, Haupt, Bern, p. 11 - 27, 2007. (Book Chapter)
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Heike Bruch, Jochen Menges, Boesche A., Wie erfolgreiche Unternehmen mit Energie Kunden begeistern , In: Jahrbuch Kunde im Fokus, IM Marketing-Forum , Ettlingen, p. 72 - 75, 2007. (Book Chapter)
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