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991.
Elissaveta Zaharieva Matthew Gorton John Lingard 《Journal of Purchasing & Supply Management》2003,9(5-6):235-245
During transition, Bulgaria witnessed the dismantling of communist agri-food supply channels and a weakening of contract enforcement mechanisms. Wineries have had to establish grape procurement and purchasing relationships with a more diverse set of growers and intermediaries. In an attempt to overcome the weaknesses of procurement via spot markets, they have sought more interdependent contractual forms that secure greater control over the quality of inputs and minimise the possibility of opportunistic behaviour. The desired option by wineries is complete backward integration but attempts to achieve this have been limited by fragmented land ownership, credit constraints and incomplete property rights. 相似文献
992.
We propose a novel methodology for identification of first-price auctions, when bidders’ private valuations are independent conditional on one-dimensional unobserved heterogeneity. We extend the existing literature ( and ) by allowing the unobserved heterogeneity to be non-separable from bidders’ valuations. Our central identifying assumption is that the distribution of bidder values is increasing in the state. When the state-space is finite, such monotonicity implies the full-rank condition needed for identification. Further, we extend our approach to the conditionally independent private values model of Li et al. (2000), as well as to unobserved heterogeneity settings in which the implicit reserve price or the cost of bidding varies across auctions. 相似文献
993.
Matthew McQueen 《Intereconomics》2002,37(2):101-109
The EU has opened up its market to duty and quota free imports from the least developed countries. This article outlines the
key elements of this initiative and the factors determining its likely effects and argues that the EU must also liberalise
and reform its prefernntial rules of origin if the initiative is to be effective in achieving its objectives. 相似文献
994.
This article examines optimal social linkage when each individual's repeated interaction with each of his neighbors creates spillovers. Each individual's discount factor is randomly determined. A planner chooses a local interaction network or neighborhood design before the discount factors are realized. Each individual then plays a repeated Prisoner's Dilemma game with his neighbors. A local trigger strategy equilibrium (LTSE) describes an equilibrium in which each individual conditions his cooperation on the cooperation of at least one “acceptable” group of neighbors. Our main results demonstrate a basic trade‐off in the design problem between suboptimal punishment and social conflict. Potentially suboptimal punishment arises in designs with local interactions since in this case monitoring is imperfect. Owing to the heterogeneity of discount factors, however, greater social conflict may arise in more connected networks. When individuals' discount factors are known to the planner, the optimal design exhibits a cooperative “core” and an uncooperative “fringe.”“Uncooperative” (impatient) types are connected to cooperative ones who tolerate their free riding so that social conflict is kept to a minimum. By contrast, when the planner knows only the ex ante distribution over individual discount factors, then in some cases the optimal design partitions individuals into maximally connected cliques (e.g., cul‐de‐sacs), whereas in other cases incomplete graphs with small overlap (e.g., grids) are possible. 相似文献
995.
The reaction of labor markets to economic reforms is an important indicator of the progress of transition. Because of diminished government support and the breakup of state and collective enterprises, labor market adjustments in the transition economies have been particularly severe in the agricultural sector. This article evaluates the off-farm labor market for a sample of agrarian households in transition Bulgaria. We give particular attention to the distributional assumptions that underlie standard approaches to the evaluation of labor supply. A variety of specification tests are considered and support for standard maximum likelihood estimates which rely on normality as a maintained hypothesis is mixed. Alternative semiparametric (distribution-free) estimators are also considered. The empirical results indicate that, five years after the initiation of the transition, off-farm labor supply patterns for Bulgarian agricultural households are similar to what is commonly observed in developed market economies. Labor supply is positively affected by factors such as education and work experience which are hypothesized to increase off-farm wages. Social benefit programs providing monetary or in-kind support payments are shown to significantly decrease off-farm work. 相似文献
996.
We study implementation in undominated Nash equilibrium by bounded mechanisms. (An undominated Nash equilibrium is a Nash equilibrium in which no agent uses a weakly dominated strategy. A mechanism is bounded if every dominated strategy is dominated by some undominated strategy.) We identify necessary conditions and sufficient conditions for such implementation. These conditions are satisfied in virtually all economic environments, and are also satisfied by interesting correspondences from the social choice literature. For economic settings, we provide a particularly simple implementing mechanism for which the undominated equilibrium outcomes coincide with those obtained from the iterative elimination of weakly dominated strategies. Journal of Economic Literature Classification Numbers: 022, 025, 026. 相似文献
997.
Optimal Risk Management Using Options 总被引:5,自引:0,他引:5
Dong-Hyun Ahn Jacob Boudoukh Matthew Richardson & Robert F. Whitelaw 《The Journal of Finance》1999,54(1):359-375
This article provides an analytical solution to the problem of an institution optimally managing the market risk of a given exposure by minimizing its Value-at-Risk using options. The optimal hedge consists of a position in a single option whose strike price is independent of the level of expense the institution is willing to incur for its hedging program. This optimal strike price depends on the distribution of the asset exposure, the horizon of the hedge, and the level of protection desired by the institution. Moreover, the costs associated with a suboptimal choice of exercise price are economically significant. 相似文献
998.
999.
Matthew F. Mitchell 《International Economic Review》2005,46(3):935-955
The skill premium fell substantially in the first part of the 20th century and then rose at the end of the century. I argue that these changes are connected to the organization of production. When production is organized into large plants, jobs become routinized, favoring less‐skilled workers. A model is introduced that parameterizes capital's ability to do many tasks, that is, capital's flexibility. When calibrated to data on the distribution of plant sizes, the model can account for between half and two‐thirds of the movement in the skill premium over the century. 相似文献
1000.
Matthew Rafferty 《Southern economic journal》2005,71(3):582-591
This article examines the relationship between output volatility and long-run growth for 18 developed countries between 1880 and 1990. The analysis builds on the existing literature by decomposing output growth volatility into expected and unexpected components and then examining whether the types of volatility have different effects on long-run growth. The results are consistent with the view that unexpected volatility reduces long-run growth and that expected volatility increases long-run growth. The results also suggest that the combined effect of expected and unexpected volatility is to reduce long-run growth for most countries and most time periods. 相似文献