Gerhard Schwabe, J Novak, M Aggeler, Designing the Tourist Agency of the Future, In: 21st Bled eConference eCollaboration: Overcoming Boundaries Through Multi-Channel Interaction, 2008-06-15. (Conference or Workshop Paper published in Proceedings)
The Internet has challenged the traditional business model of travel agencies: What is the reason for their existence if information is abundantly available and transactions can be flexibly booked on the Internet? This paper argues that good travel advisory services create a significant added value, if they succeed in uncovering the customers’ hidden needs and creating a better user experience. Modern information systems such as the SmartTravel system developed by the authors support this effort and provide the customers with an involving “shopping” experience. SmartTravel supports the agent-customer interaction with a large display and an interface integrating professional and user-generated content. We present the design rationale and the interface design of the SmartTravel system. First evaluation results indicate that the users value the system, because it provides richer and more trustworthy information in a more enjoyable environment. |
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Martin Pinzger, K Gräfenhain, P Knab, H C Gall, A Tool for Visual Understanding of Source Code Dependencies, In: International Conference on Program Comprehension, 2008-06-10. (Conference or Workshop Paper published in Proceedings)
Many program comprehension tools use graphs to visualize
and analyze source code. The main issue is that existing
approaches create graphs overloaded with too much
information. Graphs contain hundreds of nodes and even
more edges that cross each other. Understanding these
graphs and using them for a given program comprehension
task is tedious, and in the worst case developers stop using
the tools. In this paper we present DA4Java, a graphbased
approach for visualizing and analyzing static dependencies
between Java source code entities. The main contribution
of DA4Java is a set of features to incrementally
compose graphs and remove irrelevant nodes and edges
from graphs. This leads to graphs that contain significantly
fewer nodes and edges and need less effort to understand. |
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Burkhard Stiller, Econ@Tel: COST Action IS0605 ? A Telecommunications Economics COST Network, In: DC ISCH Annual Meeting. 2008. (Conference Presentation)
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A Löber, Gerhard Schwabe, Audio and chat combined - are two media better than one?, In: 16th European Conference on Information Systems (ECIS 2008), 2008-06-09. (Conference or Workshop Paper published in Proceedings)
Meetings and collaborative work are part of the everyday business life. Audio communication in the form of VoIP and instant messaging-based chat communication offer new and inexpensive ways to communicate in groups. Our previous research has shown that the selection of either audio or chat has a significant impact on the collaborative productivity. This experiment observes the impact of
selecting both audio and chat communication at the same time. We analyze whether the polychronicity helps to achieve a higher productivity. This work provides quantitative, experimental-based data. We show with this data that typical users are overwhelmed by the combination of both media. The complexity of listening to the audio conversation, reading the chat dialog and observing the shared whitespace together with communicating seems to induce too high a cognitive load on the user, thus
preventing productive work. This paper shows the importance of quantitative experiments about polychronicity and proposes further work about the correlation of media synchronicity and polychronicity research. |
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C C Kanne, A Böhm, E Marth, The Demaq system: declarative development of distributed applications, In: 28th ACM SIGMOD/PODS Conference, Association for Computing Machinery (ACM), New York, 2008-06-09. (Conference or Workshop Paper)
The goal of the Demaq project is to investigate a novel way of thinking about distributed applications that are based on the asynchronous exchange of XML messages. Unlike today's solutions that rely on imperative programming languages and multi-tiered application servers, Demaq uses a declarative language for implementing the application logic as a set of rules. A rule compiler transforms the application specifications into execution plans against the message history, which are evaluated using our optimized runtime engine. This allows us to leverage existing knowledge about declarative query processing for optimizing distributed applications. |
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Andrea Schenker-Wicki, Vertrauen – Kontrolle - Performance, In: Swiss Performance Academy. 2008. (Conference Presentation)
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Andreas Scherer, David Seidl, Guido Palazzo, Legitimacy Strategies as Complexity Reduction in a Post-national World – A Systems-Theory Perspective, In: Organization Studies Summer Workshop. 2008. (Conference Presentation)
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Andreas Scherer, G Palazzo, David Seidl, Legitimacy strategies as complexity reduction in a post-national world: a systems-theory perspective, In: 4th Organization Studies Summer Workshop 2008: “Embracing complexity: advancing ecological understanding in organizational studies”, 2008-06-05. (Conference or Workshop Paper published in Proceedings)
Legitimacy can be understood as the social acceptance of actions or institutions and is a vital resource for the sustained survival of companies in competitive environments. Legitimacy is subjectively perceived and ascribed to institutions and activities in processes of social construction. In recent times organizational legitimacy has been maintained primarily by either adapting to the social expectations of the company’s environment or by actively influencing the expectations of relevant stakeholder groups by means of advertising, public relations or strategic manipulation. During the process of globalization, however, companies are facing situations of increased complexity and heterogeneity in their environments so that the legitimacy strategies of adaptation and strategic manipulation may easily fail. In such situations, companies have to build on a third strategy, moral reasoning, in order to (re-)establish their legitimacy. However, moral reasoning cannot completely substitute both the other legitimacy strategies. We suggest that in order to survive in complex and competitive environments companies have to establish the organizational capacity to activate all of the three legitimacy strategies. In the present paper will develop a theoretical framework for three legitimacy strategies and their organizational implementation. We will build upon systems theory and empirical evidence from exemplary case studies. |
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Helmut Max Dietl, Egon Franck, Alexander Rathke, Günstig ausgelost: Deutschland besitzt zumindest mathematisch die grössten Chancen, den EM-Final in Wien zu erreichen, In: Neue Zürcher Zeitung, 129, p. 55, 5 June 2008. (Newspaper Article)
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David Hausheer, Distributed Test-Lab: EMANICSLab, In: 2nd International Summer School on Network and Service Management (ISSNSM 2008). 2008. (Conference Presentation)
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T Kuhn, AceWiki: Collaborative ontology management in controlled natural language, In: Proceedings of the Third Workshop on Semantic Wikis – The Wiki Way of Semantics. 5th European Semantic Web Conference, 2008-06-02. (Conference or Workshop Paper published in Proceedings)
AceWiki is a prototype that shows how a semantic wiki using controlled natural language - Attempto Controlled English (ACE) in our case - can make ontology management easy for everybody. Sentences in ACE can automatically be translated into first-order logic, OWL, or SWRL. AceWiki integrates the OWL reasoner Pellet and ensures that the ontology is always consistent. Previous results have shown that people with no background in logic are able to add formal knowledge to AceWiki without being instructed or trained in advance. |
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Andreas Lange, Andreas Löschel, Carsten Vogt, Andreas Ziegler, On the self-serving use of equity in international climate negotiations, In: Monte Verità Conference on Sustainable Resource Use and Economic Dynamics (SURED 2008), 2008-06-02. (Conference or Workshop Paper)
We discuss self-serving uses of equity in international climate negotiations. Using unique data from a world-wide survey of agents involved in international climate policy, we show that the perceived support of different equity rules by countries can be explained by the ranking of their economic costs. Despite being self-serving, equity arguments may be perceived as being used for different reasons, e.g. out of fairness considerations or to facilitate of negotiations. Consistent with experimental and behavioral studies, we find empirical evidence for self-serving biases: individuals are more likely to state reasons with positive attributes if they evaluate countries that support the individual’s personally preferred equity rule. Negotiators perceive countries’ use of equity as less influenced by pressure from interest groups. |
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Anca Ordeanu, Planung, Bewertung und Beurteilung von Investitionen des Projektes "Yello", University of Zurich, Faculty of Economics, Business Administration and Information Technology, 2008. (Bachelor's Thesis)
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Diana Hulina, Die Rolle von Vertriebsentschädigungen im Fondsvertrieb, University of Zurich, Faculty of Economics, Business Administration and Information Technology, 2008. (Bachelor's Thesis)
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David Schmid, Strukturierte Produkte in der Schweiz: Finanzinnovationen, Trends und der Markt in drei Jahren, University of Zurich, Faculty of Economics, Business Administration and Information Technology, 2008. (Bachelor's Thesis)
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Maxim Litvak, A Real Options Approach, University of Zurich, Faculty of Economics, Business Administration and Information Technology, 2008. (Bachelor's Thesis)
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Thomas Strahm, Commodity Markets: The Effect of Extreme Events and Possible Diversification Strategies, University of Zurich, Faculty of Economics, Business Administration and Information Technology, 2008. (Bachelor's Thesis)
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Roger Hunziker, Kotierung und Handel von Strukturierten Produkten im deutschen, italienischen und Schweizer Markt, University of Zurich, Faculty of Economics, Business Administration and Information Technology, 2008. (Bachelor's Thesis)
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Tobias Hochstrasser, Die Rolle der Analystenprognosen in der Schweiz, University of Zurich, Faculty of Economics, Business Administration and Information Technology, 2008. (Bachelor's Thesis)
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Stefano Battiston, Jan Lorenz, Systemic risk in a network fragility model analyzed with probability density evolution of persistent random walks, Networks and heterogeneous media, Vol. 3 (2), 2008. (Journal Article)
We study the mean field approximation of a recent model of cascades on networks relevant to the investigation of systemic risk control in financial networks. In the model, the hypothesis of a trend reinforcement in the stochastic process describing the fragility of the nodes, induces a trade-off in the systemic risk with respect to the density of the network. Increasing the average link density, the network is first less exposed to systemic risk, while above an intermediate value the systemic risk increases. This result offers a simple explanation for the emergence of instabilities in financial systems that get increasingly interwoven. In this paper, we study the dynamics of the probability density function of the average fragility. This converges to a unique stable distribution which can be computed numerically and can be used to estimate the systemic risk as a function of the parameters of the model. |
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