Marc Engel, Private Investments in Public Equity, University of Zurich, Faculty of Economics, Business Administration and Information Technology, 2008. (Bachelor's Thesis)
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Laila Grasso, The Impacts of Shareholder Activism in the middle and long run, University of Zurich, Faculty of Economics, Business Administration and Information Technology, 2008. (Bachelor's Thesis)
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Fabienne Buschor, Collaborative Governance in der Schweiz und in Deutschland, University of Zurich, Faculty of Economics, Business Administration and Information Technology, 2008. (Bachelor's Thesis)
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Ramazan Gençay, Nikola Gradojevic, Overnight interest rates and aggregate market expectations, Economics Letters, Vol. 100 (1), 2008. (Journal Article)
This paper introduces an entropy approach to measuring market expectations with respect to overnight interest rates in an inter-bank money market. The findings for the Turkish 2000-2001 borrowing crisis suggest that a dynamic, non-extensive entropy framework provides a valuable insight into the degree of aggregate market concerns during the crisis. |
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Ulrike Malmendier, Geoffrey Tate, Who Makes Acquisitions? CEO Overconfidence and the Market’s Reaction, Journal of Financial Economics, Vol. 89 (1), 2008. (Journal Article)
Does CEO overconfidence help to explain merger decisions? Overconfident CEOs over-estimate their ability to generate returns. As a result, they overpay for target companies and undertake value-destroying mergers. The effects are strongest if they have access to internal financing. We test these predictions using two proxies for overconfidence: CEOs’ personal over-investment in their company and their press portrayal. We find that the odds of making an acquisition are 65% higher if the CEO is classified as overconfident. The effect is largest if the merger is diversifying and does not require external financing. The market reaction at merger announcement (-90 basis points) is significantly more negative than for non-overconfident CEOs (-12 basis points). We consider alternative interpretations including inside information, signaling, and risk tolerance. |
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Joachim Grammig, Kerstin Kehrle, A new marked point process model for the federal funds rate target: methodology and forecast evaluation, Journal of Economic Dynamics and Control, Vol. 32 (7), 2008. (Journal Article)
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Thomas Bocek, W Kun, Fabio Victora Hecht, D Hausheer, Burkhard Stiller, PSH: A private and shared history-based incentive mechanism, In: Second International Conference on Autonomous Infrastructure, Management and Security, AIMS 2008, Springer, Berlin, 2008-07-01. (Conference or Workshop Paper published in Proceedings)
Fully decentralized peer-to-peer (P2P) systems do not have a central control mechanism. Thus, different forms of control mechanisms are required to deal with selfish peers. One type of selfish behavior is the consumption of resources without providing sufficient resources. Therefore, incentive schemes encourage peers to share resources while punishing selfish peers. A well-known example of an incentive scheme is Tit-for-Tat (TFT), as used in BitTorrent. With this scheme, a peer can only consume as much resources as it provides. TFT is resilient to collusion due to relying on private histories only. However, TFT can only be applied to peers with direct reciprocity.
This paper presents a private and shared history (PSH) based incentive mechanism, which supports transitive relations (indirect reciprocity). Furthermore, it is resilient to collusion and it combines private and shared histories in an efficient manner. The PSH approach uses a shared history for identifying transitive relations. Those relations are verified using private histories. Simulations show that the PSH mechanism has a higher transaction success ratio than TFT. |
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G Schaffrath, Burkhard Stiller, Conceptual integration of flow-based and packet-based network intrusion detection, In: 2nd International Conference on Autonomous Infrastructure, Management and Security (AIMS 2008), Springer, Berlin, 2008-07-01. (Conference or Workshop Paper published in Proceedings)
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Fabio Victora Hecht, Burkhard Stiller, Enabling next generation peer-to-peer services, In: 2nd International Conference on Autonomous Infrastructure, Management and Security (AIMS 2008), Springer, Berlin, 2008-07-01. (Conference or Workshop Paper published in Proceedings)
Peer-to-peer (P2P) applications have the potential to improve net- work scalability and create a community in which resources are under the shared responsibility of its members. Current popular solutions target specific applications, such as file sharing and VoIP (Voice-over-IP), but important challenges prevent P2P technology from having wider acceptance in other services. Overwhelmed by interdomain traffic generated by P2P applications that build overlays asymmetric to the network topology, ISPs offer at a home user level only connections with asymmetric bandwidth. This measure efficiently hinders P2P applications. This paper introduces a new incentive model for overlay applications and ISPs to collaborate and to create at the same time a win-win situation. The approach combines two principles: (1) ISPs and P2P applications communicate to correct overlay asymmetry and (2) ISPs diminish bandwidth asymmetry by providing users additional bandwidth reserved for intradomain traffic. |
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D J Lutz, Burkhard Stiller, Token-based payment in dynamic SAML-based federations, In: 2nd International Conference on Autonomous Infrastructure, Management and Security (AIMS 2008), International Federation for Information Processing (IFIP) / Springer, Berlin, Heidelberg, 2008-07-01. (Conference or Workshop Paper published in Proceedings)
The newly developed approach on token-based payments introduces an integration of payments with current schemes for Identity Federations based on SAML. This new design utilizes an established federation infrastructure as well as its protocols. Only relevant mechanisms to support the payment on the federation infrastructure level are extended. |
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I Assent, R Krieger, B Glavic, T Seidl, Clustering multidimensional sequences in spatial and temporal databases, Knowledge and Information Systems (KAIS), Vol. 16 (1), 2008. (Journal Article)
Many environmental, scientific, technical or medical database applications require effective and efficient mining of time series, sequences or trajectories of measurements taken at different time points and positions forming large temporal or spatial databases. Particularly the analysis of concurrent andmultidimensional sequences poses newchallenges in finding clusters of arbitrary length and varying number of attributes. We present a novel algorithm capable of finding parallel clusters in different subspaces and demonstrate our results for temporal and spatial applications. Our analysis of structural quality parameters in rivers is successfully used by hydrologists to develop measures for river quality improvements. |
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M Lungarella, G Gómez, Developmental robotics, In: Encyclopedia of Artificial Intelligence, Information Science Reference, Hershey, p. 464 - 470, 2008-07. (Book Chapter)
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Proceedings of the Second Planning to Learn Workshop (PlanLearn) at ICML/COLT/UAI 2008, Edited by: P Brazdil, Abraham Bernstein, L Hunter, Omnipress, Helsinki, Finnland, 2008-07. (Edited Scientific Work)
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Johan Björck, The persistence of financial performance and the competitive advantage period: an empirical analysis, University of Zurich, Faculty of Economics, Business Administration and Information Technology, 2008. (Dissertation)
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Dieter Pfaff, H Mattle, IKS und Angaben über die Risikobeurteilung im Anhang: was ab Jahresrechnung 2008 für Sie ändert?, Maschinenbau: das Schweizer Industriemagazin, seit 1972, Vol. 37 (7), 2008. (Journal Article)
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Helmut Max Dietl, M Lang, The effect of gate revenue sharing on social welfare, Contemporary Economic Policy, Vol. 26 (3), 2008. (Journal Article)
This paper provides a theoretical model of a team sports league based on contest theory and studies the welfare effect of gale revenue sharing. It derives two counterintuitive results. First, it challenges the "invariance proposition" by showing that revenue sharing reduces competitive balance and thus produces a more unbalanced league. Second, the paper concludes that a lower degree of competitive balance compared with the noncooperative league equilibrium yields a higher level of social welfare and club profits. Combining both results, it concludes that gate revenue sharing increases social welfare and club profits in our model. |
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Stefan Koelsch, Simone Kilches, Nikolaus Steinbeis, Stefanie Schelinski, Effects of unexpected chords and of performer's expression on brain responses and electrodermal activity, PLoS ONE, Vol. 3 (7), 2008. (Journal Article)
BACKGROUND: There is lack of neuroscientific studies investigating music processing with naturalistic stimuli, and brain responses to real music are, thus, largely unknown.
METHODOLOGY/PRINCIPAL FINDINGS: This study investigates event-related brain potentials (ERPs), skin conductance responses (SCRs) and heart rate (HR) elicited by unexpected chords of piano sonatas as they were originally arranged by composers, and as they were played by professional pianists. From the musical excerpts played by the pianists (with emotional expression), we also created versions without variations in tempo and loudness (without musical expression) to investigate effects of musical expression on ERPs and SCRs. Compared to expected chords, unexpected chords elicited an early right anterior negativity (ERAN, reflecting music-syntactic processing) and an N5 (reflecting processing of meaning information) in the ERPs, as well as clear changes in the SCRs (reflecting that unexpected chords also elicited emotional responses). The ERAN was not influenced by emotional expression, whereas N5 potentials elicited by chords in general (regardless of their chord function) differed between the expressive and the non-expressive condition.
CONCLUSIONS/SIGNIFICANCE: These results show that the neural mechanisms of music-syntactic processing operate independently of the emotional qualities of a stimulus, justifying the use of stimuli without emotional expression to investigate the cognitive processing of musical structure. Moreover, the data indicate that musical expression affects the neural mechanisms underlying the processing of musical meaning. Our data are the first to reveal influences of musical performance on ERPs and SCRs, and to show physiological responses to unexpected chords in naturalistic music. |
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Bruno Frey, Sascha L Schmidt, Benno Torgler, Relative income position, inequality and performance: an empirical panel analysis, In: Myths and facts about football: the economics and psychology of the world's greatest sport, Cambridge Scholars Publishing, Newcastle upon Tyne, p. 349 - 369, 2008-07. (Book Chapter)
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Konstantin Beck, Margot Beck, Was bedeutet Capitationfinanzierung?, In: Defacto, 2, p. 3, 1 July 2008. (Newspaper Article)
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Timon Ruther, Der Einfluss der Informationstechnologie auf den Prinzipal-Agenten-Konflikt des Anlageberatngsprozesses, University of Zurich, Faculty of Economics, Business Administration and Information Technology, 2008. (Master's Thesis)
Abstract
In today’s harshly competitive ?nancial sector, ?nancial advice turnes out to be an apropriate
tool to set oneself apart form competitors. However, ?nancial advice seems to have several de?-
ciencies which lead customers to lose trust in their advisors. Consequently, many customers will
stop taking advice from consultants altogether. De?ciencies are mostly a result of an information
asymmetry between a customer an his ?nancial advisor. The process of information gathering
is supported by information technology which prepares and provides relevant information to
its users. The advisor is always better informed than his customer because the customer has no
access to the information system of the advisor.
Agency theory provides an effective tool for analizing the various characteristics of informa-
tion asymmetries between an agent (advisor) and a principal (customer). The in?uence of infor-
mation technology on the principal–agency–con?ict between customer and ?nancial advisor is
explored in this work against the background of the agency theory. With this aim several issues of
the ?nancial advisory process and the effect of information technology on on these issues will be
identi?ed. On the basis of the agency theory, possible ways towards a solution of these problems
will be explored. |
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