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排序方式: 共有96条查询结果,搜索用时 15 毫秒
1.
This paper presents two results about preference domain conditions that deepen our understanding of anonymous and monotonic Arrovian social welfare functions (ASWFs). We characterize the class of anonymous and monotonic ASWFs on domains without Condorcet triples. This extends and generalizes an earlier characterization (as Generalized Majority Rules) by Moulin (Axioms of Cooperative Decision Making, Cambridge University Press, New York, 1988) for single-peaked domains. We also describe a domain where anonymous and monotonic ASWFs exist only when there are an odd number of agents. This is a counter-example to a claim by Muller (Int. Econ. Rev. 23 (1982) 609), who asserted that the existence of 3-person anonymous and monotonic ASWFs guaranteed the existence of n-person anonymous and monotonic ASWFs for any n>3. Both results build upon the integer programming approach to the study of ASWFs introduced in Sethuraman et al. (Math. Oper. Res. 28 (2003) 309). 相似文献
2.
This paper considers educational investment, wages and hours of market work in an imperfectly competitive labour market with heterogeneous workers and home production. It investigates the degree to which there might be both underemployment in the labour market and underinvestment in education. A central insight is that the ex post participation decision of workers endogeneously generates increasing marginal returns to education. Although equilibrium implies underinvestment in education, optimal policy is not to subsidise education. Instead it is to subsidise labour market participation which we argue might be efficiently targeted as state-provided childcare support. 相似文献
3.
This article examines the transferability of the concept of gentrification away from its Anglo‐American heartland to the cities of Asia Pacific and specifically Hong Kong. An epistemological argument challenges such theoretical licence, claiming that conceptual overreach represents another example of Anglo‐American hegemony asserting the primacy of its concepts in other societies and cultures. Past research suggests that if gentrification exists in Asia Pacific cities it bears some definite regional specificities of urban form, state direction and, most surprising from a Western perspective, a potentially progressive dimension for some impacted residents. Closer examination of urban discourse in Hong Kong is conducted through analysis of English and Chinese language newspapers. In both instances, gentrification is barely used to describe the pervasive processes of urban redevelopment, which otherwise receive abundant coverage. Interviews with local housing experts confirm the marginality of gentrification in academic and public discourse, and the power of a local ideology that sees urban (re)development unproblematically as a means of upward social mobility. However, in the decade‐long housing bust after 1997, growing inequality has encouraged a nascent class analysis of the property market, an ontological awakening that may prove more favourable to the identification of gentrification in an Asia Pacific idiom. 相似文献
4.
We explore how gender bias in career opportunities affects matching in a marriage market with search frictions and where an individual’s fitness decays with age. We document a “being left on the shelf” effect where young singles, who find the marriage market rapidly thins with age, rush into early partnership. Singles with stronger career opportunities, however, have a greater option value to defer marriage. More equal career opportunities for women (captured by greater schooling and better occupations) potentially explain the recent emergence of toyboy unions, in which the woman is at least 5 years older than her partner. 相似文献
5.
We introduce inventories into an otherwise standard New Keynesian model and study the implications for inflation dynamics. Inventory holdings are motivated as a means to generate sales for demand-constrained firms. We derive various representations of the New Keynesian Phillips curve with inventories and show that one of these specifications is observationally equivalent to the standard model with respect to the behavior of inflation when the model's cross-equation restrictions are imposed. However, the driving variable in the New Keynesian Phillips curve – real marginal cost – is unobservable and has to be proxied by, for instance, real unit labor cost. An alternative approach is to impute marginal cost by using the model's optimality conditions. We show that the stock–sales ratio is linked to marginal cost. We also estimate these various specifications of the New Keynesian Phillips curve using GMM. We find that the predictive power of the inventory-specification at best approaches that of the standard model, but does not improve upon it. 相似文献
6.
7.
Y.D. Xu S.J. LiK.L. Teo 《Transportation Research Part E: Logistics and Transportation Review》2012,48(3):567-577
In this paper, we study a (weak) vector equilibrium principle with capacity constraints of arcs and common arcs in some different paths. We obtain some necessary and sufficient conditions for a (weak) vector minimum cost flow. By virtue of a (weak) Δ-equilibrium principle, we also derive some necessary and sufficient conditions for a weak vector equilibrium flow. 相似文献
8.
Irene K.H. Chew Senior Lecturer Albert C.Y. Teo 《International Journal of Human Resource Management》2013,24(1):231-239
This study compared the perceptions of various important job applicant characteristics, job characteristics and job benefits between 107 corporate recruiters and 191 business undergraduates in Singapore. Results indicated significant incongruence between recruiter and student perceptions of a large number of job characteristics and benefits. However, perceptual differences were less extensive in the case of applicant attributes. The implications of these findings, and suggestions for greater perceptual congruence between recruiters and applicants, are discussed. 相似文献
9.
The emergence of the Internet and new software applications has provided an opportunity for some companies to move towards an extended enterprise business model–one that enhances value across the total supply chain. The prime driver of this trend has been the implementation of Enterprise Resource Planning (ERP) systems. The research investigates whether traditional technology infrastructures, including information systems, have failed to deliver the level of support required to enable organizations to take advantage of the new extended business model. The research identifies a series of new and distinctive capabilities that influence the adoption of an extended business model. Supported by innovative technologies, leading companies are exploiting these distinctive capabilities to meet the challenge of the New Economy. 相似文献
10.
This comment contrasts the jointness statistics proposed by Doppelhofer and Weeks ( 2009 ) with alternatives proposed by Strachan ( 2009 ) and Ley and Steel ( 2007 ). In contrast to the alternatives, our jointness statistic constitutes a formal test for dependence over the joint posterior distribution. The essential difference between our proposed measure and the alternatives is that our jointness measures uses the entire joint posterior distribution. We discuss differences in jointness, as well as inclusion and exclusion margins of the joint posterior distribution, and the impact on economic significance using the numerical examples given by Strachan ( 2009 ) and Ley and Steel ( 2009 ). Copyright © 2009 John Wiley & Sons, Ltd. 相似文献