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111.
Matching Communities and Hierarchies within the Firm 总被引:1,自引:0,他引:1
Cohendet Patrick Creplet Frédéric Diani Morad Dupouët Olivier Schenk Eric 《Journal of Management and Governance》2004,8(1):27-48
This article, which draws on recent literature on organizational communities, raises the question of the coherence of the
firm through the analysis of the dialectic interaction between hierarchies and Knowledge-Intensive Communities (KnICs) within
the firm. Focusing on the cognitive dimension of the firm, we analyze the matching between hierarchies and KnICs and draw
conclusions as to the coherence of the firm. Using two key elements (the frequency of interactions and the intensity of communication between communities), we draw a typology allowing a better understanding of the processes of coordination and knowledge creation
within the firm.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
112.
Markus Frölich 《AStA Advances in Statistical Analysis》2007,91(3):279-290
Propensity score matching is now widely used in empirical applications
for estimating treatment effects. Propensity score matching (PSM) is preferred to matching on X because
of the lower dimension of the estimation problem. In this note, however, it is shown that PSM is inefficient
compared to matching on X. Hence, matching on X should be considered as a serious alternative. 相似文献
113.
The aim of this article is to assess and compare several statistical methods for hyperspectral image supervised classification only using the spectral dimension. Since hyperspectral profiles may be viewed either as a random vector or a random curve, we propose to confront various multivariate discriminating procedures with functional alternatives. Eight methods representing three important statistical communities (mixture models, machine learning and functional data analysis) have been applied on three hyperspectral datasets following three protocols studying the influence of size and composition of the learning sample, with or without noised labels. Besides this comparative study, this work proposes a functional extension of multinomial logit model as well as a fast computing adaptation of the nonparametric functional discrimination. As a by-product, this work provides a useful comprehensive bibliography and also supplemental material especially oriented towards practitioners. 相似文献
114.
A requirement of procedural fairness is introduced and imposed on game forms. According to this axiom, everybody should be able, by varying unilaterally one`s strategy while keeping the others' strategies fixed, to produce the same set of outcomes. This axiom is called « Equality of Attainable Sets ». A necessary and sufficient condition for Nash implementability with Equality of Attainable Sets is provided under a mild domain restriction. This condition is shown to be equivalent to Nash implementability in structured models where each agent is homo oeconomicus.I thank C. d'Aspremont, S. Barbera, K. Binmore, J. Roemer, L. Gevers and an anonymous referee for their comments. The usual disclaimer applies. 相似文献
115.
Reports of Wins and Risk Taking: An Investigation of the Mediating Effect of the Illusion of Control
Frédéric Martinez Valérie Le Floch Bernard Gaffié Gaëlle Villejoubert 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》2011,27(2):271-285
Two experiments examined the relationships between the knowledge that another person has won in a gamble, the illusion of
control and risk taking. Participants played a computer-simulated French roulette game individually. Before playing, some
participants learnt that another person won a large amount of money. Results from a first experiment (n = 24) validated a causal model where the knowledge of another person’s win increased the illusion of control, measured with
betting times, expectancy and self-reports on scales, which in turn encourages risk taking. In the second experiment (n = 36), some participants were told the previous player acknowledged the win to be fortuitous. The suppression of the belief
that the previous winner had himself exerted control over the outcome resulted in lower rates of risk-taking behaviors. This
suggests that it was not the knowledge of another person’s win in itself that increased risk taking, but rather, the belief
that the other person had some control over the gamble’s outcome. Theoretical implications for the study of social mechanisms
involved in gambling behavior are discussed. 相似文献
116.
Ziegelmeyer Anthony Broihanne Marie-Hélène Koessler Frédéric 《Journal of Risk and Uncertainty》2004,28(2):165-186
This paper investigates parimutuel betting in the laboratory. Our experimental design relies on a simple sequential betting game where equilibrium strategies are characterized according to objective probabilities, the number of bettors, and publicly observable odds. The empirically well-documented phenomenon referred to as the favorite-longshot bias is observed in two of our three treatments. We offer a theoretical explanation of the subjects' behavior which relies on rank-dependent expected utility and pessimistic expectations about future bets. 相似文献
117.
Continuous determinantal point processes (DPPs) are a class of repulsive point processes on with many statistical applications. Although an explicit expression of their density is known, it is too complicated to be used directly for maximum likelihood estimation. In the stationary case, an approximation using Fourier series has been suggested, but it is limited to rectangular observation windows and no theoretical results support it. In this contribution, we investigate a different way to approximate the likelihood by looking at its asymptotic behavior when the observation window grows toward . This new approximation is not limited to rectangular windows, is faster to compute than the previous one, does not require any tuning parameter, and some theoretical justifications are provided. It moreover provides an explicit formula for estimating the asymptotic variance of the associated estimator. The performances are assessed in a simulation study on standard parametric models on and compare favorably to common alternative estimation methods for continuous DPPs. 相似文献
118.
Marek Krajewski Łukasz Rogowski Maciej Frąckowiak 《The British journal of sociology》2023,74(3):433-452
This paper shows how the metropolitan creative classes in Poland reacted to the changes in the organization of everyday life caused by the COVID-19 pandemic, especially its temporality and rhythmicity. The pandemic and lockdowns reorganized previous ways of experiencing and managing time. Based on our empirical research and research by other scholars, we have identified some of the most common disruptions of pandemic temporality. However, a vital element of the article is to specify how the social category we studied dealt with these disruptions. In doing so, we show that the response to the breakdown of the previous order of everyday life was to restore a sense of stability actively. We were also interested in the possible, also negative consequences of the findings for the social category under study. The empirical basis for the article are in-depth interviews conducted during the fourth phase of the ongoing research project [title anonymized], which began during the first weeks of the lockdown in Poland. 相似文献