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111.
Using intuition and computer experimentation, Brady conjectured that the ratio of the subdominant eigenvalue to the dominant eigenvalue of a positive random matrix (with identically and independently distributed entries) converges to zero when the number of the sectors tends to infinity. In this paper, we discuss the deterministic case and, among other things, prove the following version of this conjecture: if each entry of the matrix deviates from 1/n by at most θ/n1+е, then the modulus of the subdominant root is at most θ/nе where θ and ε are arbitrary positive real parameters. 相似文献
112.
Josef Andrýsek Antonella Bodini Miroslav Kárný Jan Kracík Fabrizio Ruggeri 《Group Decision and Negotiation》2008,17(3):225-236
The complexity of the problems to be addressed in an e-democracy framework and the variety of involved stakeholders, with
different backgrounds, views and access to information sources, lead us to consider the case in which an e-negotiation should
be performed among subjects who have partial, sometimes incompatible, information and can hardly gather to discuss issues
together, under the supervision of a facilitator. We propose a statistical method which addresses the issue of partial and
incompatible information, merging it and then using it to get a final decision, possibly in an automatic way, through processes of e-negotiation and e-arbitration.
相似文献
113.
Borges Maria Rosa Mendes José Zorro Pereira André 《International Advances in Economic Research》2019,25(4):429-444
International Advances in Economic Research - We tested whether the 2010, 2011 and 2014 European Union bank stress tests produced useful and real information to the market. Using an augmented... 相似文献
114.
115.
Crecimiento económico,flexibilización laboral y calidad del empleo en Colombia de 2002 a 2011 下载免费PDF全文
Tras analizar el mercado de trabajo colombiano entre 2002 y 2011, los autores constatan una mejora sustancial de las oportunidades de empleo, junto con el aumento del empleo atípico. Exploran cómo ello afectó a la calidad del empleo mediante un indicador compuesto basado en el método de componentes principales categóricos, y concluyen que hubo una leve mejora generalizada, debida al aumento de los ingresos y de la seguridad social y al menor subempleo por horas, que benefició sobre todo a las trabajadoras independientes. Ello deja todavía un déficit cualitativo importante, que requiere políticas de estímulo de la institucionalidad y la productividad laborales y de la inversión. 相似文献
116.
André Burgstaller 《Journal of International Economics》1980,10(3):341-355
The paper presents a general equilibrium model of a small flexible exchange rate economy comprising asset, goods, and labor markets. Viewing the exchange rate as determined proximately in asset markets, the study examines its influence on the excess demand for labor and for output and, correspondingly, its impact on the level of unemployment and external imbalance. The role of exchange rate expectations is central to the present analysis, which reconsiders, in that light, the conventional conclusions about monetary and fiscal policy effectiveness under flexible exchange rates. 相似文献
117.
Along with individual corporate management and regulatory matters for instance within EU regime Solvency II, Internal Risk Models are very important for major general insurance companies. Of crucial importance in building these internal models, is the stochastic modelling of large claims and in particular, the selection and parameterization of suitable probability distributions for the amount and number of claims based on empirical data. To this end, in practice, a visually-based methodology is more appropriate and workable than strict mathematical approaches. Based on a practical case study, this paper provides some insight into a visually-based methodology for internal risk models. 相似文献
118.
We develop a novel high‐dimensional non‐Gaussian modeling framework to infer measures of conditional and joint default risk for numerous financial sector firms. The model is based on a dynamic generalized hyperbolic skewed‐t block equicorrelation copula with time‐varying volatility and dependence parameters that naturally accommodates asymmetries and heavy tails, as well as nonlinear and time‐varying default dependence. We apply a conditional law of large numbers in this setting to define joint and conditional risk measures that can be evaluated quickly and reliably. We apply the modeling framework to assess the joint risk from multiple defaults in the euro area during the 2008–2012 financial and sovereign debt crisis. We document unprecedented tail risks between 2011 and 2012, as well as their steep decline following subsequent policy actions. Copyright © 2016 John Wiley & Sons, Ltd. 相似文献
119.
Jan de Leede André H. J. Nijhof Olaf A. M. Fisscher 《Journal of Business Ethics》1999,21(2-3):203-215
Concepts that include the participation and empowerment of workers are becoming increasingly important nowadays. In many of these concepts, the formal responsibility is delegated to teams. Does this imply that the normative responsibility for the actions of teams is also delegated? In this article we will reflect on the difference between holding a person accountable and bearing responsibility. A framework is elaborated in order to analyse the accountability and responsibility of teams. In this framework, the emergence of a collective mind, and the organisational factors that influence the extent to which teams have the possibility of acting in a responsible way play an important role. It shows that teams can bear responsibilities that could never be carried by a group of individuals. The framework is used to analyse two sample cases with self-managing teams in production facilities. The authors discuss the implications for the theory and practice of self-managing teams and the allocation of responsibility between individuals, teams and the organisation. 相似文献
120.
Despite mandatory parental leave policies being a prevalent feature of labor markets in developed countries, their aggregate effects in the economy are not well understood. To assess their quantitative impact, we develop a general equilibrium model of fertility and labor market decisions that builds on the labor matching framework of Mortensen and Pissarides (1994). We find that females gain substantially with generous policies but this benefit occurs at the expense of a reduction in the welfare of males. Leave policies have important effects on fertility, leave taking decisions, and employment. These effects are mainly driven by how the policy affects bargaining – young females anticipate future states with higher threat points induced by the policy. Because the realization of these states depends on the decisions of females to give birth and take a leave, leave policies effectively subsidize fertility and leave taking. We also find that generous paid parental leaves can be an effective tool to encourage mothers to spend time with their children after giving birth. 相似文献