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排序方式: 共有344条查询结果,搜索用时 31 毫秒
1.
Kenan Huremović 《Journal of Public Economic Theory》2021,23(2):275-317
In this paper we study a model of weighted network formation. The bilateral interaction is modeled as a Tullock contest game with the possibility of a draw. We describe stable networks under different concepts of stability. We show that a Nash stable network is either the empty network or the complete network. The complete network is not immune to bilateral deviations. When we allow for limited farsightedness, a stable network immune to bilateral deviations must be a complete -partite network, with partitions of different sizes. We provide several comparative statics results illustrating the importance of the structure of stable networks in mediating the effects of shocks and interventions. In particular, we show that an increase in the likelihood of a draw has a nonmonotonic effect on the level of wasteful contest spending in the society. To the best of our knowledge, this paper is the first attempt to model weighted network formation when the actions of individuals are neither strategic complements nor strategic substitutes. 相似文献
2.
Hardle Wolfgang; Herwartz Helmut; Spokoiny Vladimir 《The Journal of Financial Econometrics》2003,1(1):55-95
Price variations at speculative markets exhibit positive autocorrelationand cross correlation. Due to large parameter spaces necessaryfor joint modeling of variances and covariances, multivariateparametric volatility models become easily intractable in practice.We propose an adaptive procedure that identifies periods ofsecond-order homogeneity for each moment in time. To overcomethe high dimensionality of the problem we transform the multivariateseries into a set of univariate processes. We discuss thoroughlythe implementation of the adaptive technique. Theoretical andMonte Carlo results are given. We provide two applications ofthe new method. For a bivariate exchange rate series we comparethe multivariate GARCH approach with our method and find thelatter to be more in line with the underlying assumption ofindependently distributed innovations. Analyzing a 23-dimensionalvector of asset returns we underscore the case for adaptivemodeling in high-dimensional systems. 相似文献
3.
Vladimir Gligorov 《Constitutional Political Economy》1997,8(4):271-282
The paper discusses the constitutional theories of BenjaminConstant and Carl Schmitt on the role of sovereign power. Itthan discusses the Russian 1993 constitution to show that inthis respect it is closer to Schmitt's ideas rather than Constant's.Finally, the understanding of the role of supreme power in thecurrent Russian transformation by the Western advisers is criticisedand some speculative thoughts on Russia perception of authorityare offered. 相似文献
4.
Conclusions Up to now, specific historical development is reflected in ideological views predominant in the USSR. Many people continue to place their hopes mainly in the activity of the bodies of state power and administration, not in private initiative. An interrelated implementation of political and economic reforms will contribute to the development of new theory and ideology. It will then be possible to combine a pragmatic and theoretical approach, and to accelerate the reform of the Soviet economy [theoretical, practical and historical aspects connected with the problem of property are considered in more detail by the author in his bookEconomics and the Law soon to be published by the Economics publishing house in Moscow]. 相似文献
5.
To study the optimal age-specific labor demand and human capital investment at the firm level we extend the standard dynamic labor demand model by introducing ‘age’ as a second dynamic variable and distinguish between two types of workers: ‘low skilled’ and ‘high skilled’. Applying an age-structured optimal control model we derive qualitative features of the optimal age-specific hiring and training effort. For the case of a linear revenue and production function we prove that firms do not anticipate changes in adjustment costs in their optimal decisions. This result no longer holds if a nonlinear revenue or production function is considered. 相似文献
6.
Branko Milanović 《Journal of Comparative Economics》1982,6(4):379-395
This paper draws on Wicksell's Value, Capital and Rent. The (comparative-statics) response of the cooperative to a change in its parameters (capital stock, rate of interest paid on capital stock, and production function) is examined. Severe employment problems may be expected if, in a cooperative setting, the rate of interest is, by macroeconomic management, kept at a relatively low level. Technological progress also may lead to a contraction in employment and even, under some circumstances, cause a decline in output per man. The cooperative is throughout contrasted with its capitalist counterpart. 相似文献
7.
Dynamic Insurance Contracts and Adverse Selection 总被引:1,自引:0,他引:1
We take a dynamic perspective on insurance markets under adverse selection and study a dynamic version of the Rothschild and Stiglitz model. We investigate the nature of dynamic insurance contracts by considering both conditional and unconditional dynamic contracts. An unconditional dynamic contract has insurance companies offering contracts where the terms of the contract depend on time, but not on the occurrence of past accidents. Conditional dynamic contracts make the actual contract also depend on individual past performance (such as in car insurances). We show that dynamic insurance contracts yield a welfare improvement only if they are conditional on past performance. With conditional contracts, the first‐best can be approximated if the contract lasts long. Moreover, this is true for any fraction of low‐risk agents in the population. 相似文献
8.
Ashok Bardhan Raša Karapandža Branko Urošević 《The Journal of Real Estate Finance and Economics》2006,32(1):9-20
We develop a new option-based method for the valuation of mortgage insurance contracts in closed form in an economy where
agents are risk neutral. While the proposed valuation method is general and can be used in any market, it may be particularly
useful in emerging market economies where other existing methods may be either inappropriate or are too difficult to implement
because of the lack of relevant data. As an application, we price a typical Serbian government-backed mortgage insurance contract. 相似文献
9.
10.
Mark Bassin Paul Richardson Vladimir Kolosov Edith W. Clowes John Agnew Serhii Plokhy 《Geopolitics》2017,22(3):665-692
The essays collected in this forum discuss the geopolitical legacy of the Russian Revolution of 1917, one of the most momentous political events of the twentieth century. From a range of different academic disciplines and perspectives, the authors consider how the profound transformations in society and politics were refracted through space and geography, and how enduring these refractions proved to be. The authors focus on three themes that have been dominant in Russian affairs over the past century: 1)the problem of center-periphery relations, 2)the civilizational dynamics of Russia’s self-identification in relation to Europe and to Asia, and 3)the geopolitics of national identity. 相似文献