Tiered Housing Allocation with Preannounced Rankings: An Experimental Analysis

We study in the laboratory a variant of the house allocation with existing tenants problem where subjects are partitioned into tiers with hierarchical privileges, and they know their position in the priority queue before making their decision. We evaluate the performance of the modified versions of three well‐known mechanisms: Top Trading Cycle (TTC), Gale‐Shapley, and Random Serial Dictatorship (RSD) with Squatting Rights. For all three mechanisms, we find low rates of participation (around 40%), high rates of truth‐telling conditional on participation (around 90%), high proportions of fair allocations (above 90%), and significant efficiency losses. We also observe differences across mechanisms: RSD is ranked highest in efficiency and TTC is ranked lowest in fairness. We then show that position in the queue has a positive and significant impact on participation whereas tier has little effect on behavior. Finally, the individual analysis reveals that the majority of subjects who do not play according to the theory still follow discernible patterns of participation and preference revelation.     

心理资本对民营企业新生代员工绩效的影响——以浙江3家民营上市公司为例

通过定性与定量研究,本文认为心理资本与新生代员工绩效有显著正相关关系。回归分析发现,员工心理资本中自信维度对于新生代员工任务绩效、人际促进、工作投入三维结构均有显著的正向促进作用;乐观、坚韧对于任务绩效达成有显著正向影响;希望维度对于人际促进有显著正向影响;而坚韧维度有助于新生代员工工作投入的增强。新生代员工不只看重物质待遇,也重视精神需求的满足。     

The effect of authenticity on visitors’ expenditure at cultural events

The main aim of this study is to analyse the influence of the perceived authenticity of cultural events and their products on shopping expenditure. The quantitative analysis is based on 1275 self-administered questionnaires collected among event attendees in three different Northern Italian Christmas Markets in 2008. In order to estimate separately the determinants of the propensity of respondents to shop and how much money they are willing to spend for each kind of purchase, we have adopted a double-hurdle model. The results show that tourists are more likely to spend and that they do spend more if they consider the event and the products sold to be authentic. This study also reveals that socio-demographic factors and visit motives are interrelated with authenticity perception and together affect the amount of personal expenditures during the event. Finally, some implications of the study are discussed.     

Reconsidering learning by exporting

Self-selection and learning by exporting are the main explanations for the higher productivity of exporting firms. But, whereas evidence on self-selection is largely undisputed, results on learning by exporting are mixed and far from conclusive. However, recent research by De Loecker (J Int Econ 73(1):69–98, 2007) has shown that the conclusions from previous learning by exporting studies may have been driven by strong assumptions about the evolution of productivity and the role of export status. Relaxing these assumptions turns out to be critical to find evidence of learning by exporting in a representative sample of Spanish manufacturing firms. Our results indicate that the yearly average gains in productivity are around 3 % for at least 4 years.     

Distribution-free tests of stochastic monotonicity

This article proposes a nonparametric test of monotonicity for conditional distributions and its moments. Unlike previous proposals, our method does not require smooth estimation of the derivatives of nonparametric curves. Distinguishing features of our approach are that critical values are pivotal under the null in finite samples and that the test is invariant to any monotonic continuous transformation of the explanatory variable. The test statistic is the sup-norm of the difference between the empirical copula function and its least concave majorant with respect to the explanatory variable coordinate. The resulting test is able to detect local alternatives converging to the null at the parametric rate n^−1/2$n^{-1/2}$, with n$n$ the sample size. The finite sample performance of the test is examined by means of a Monte Carlo experiment and an application to testing intergenerational income mobility.     

Families of linear efficiency programs based on Debreu’s loss function

Gerard Debreu introduced a well known radial efficiency measure which he called a ??coefficient of resource utilization.?? He derived this scalar from a much less well known ??dead loss?? function that characterizes the monetary value sacrificed to inefficiency, and which is to be minimized subject to a normalization condition. We use Debreu??s loss function, together with a variety of normalization conditions, to generate several popular families of linear efficiency programs. Our methodology also can be employed to generate entirely new families of linear efficiency programs.     

基于复杂网络理论的应急物流网络可靠性仿真研究

首先介绍了复杂应急物流网络的内涵及其统计特征,提出了复杂应急物流网络连通可靠性的评价指标,构建了复杂应急物流网络的拓扑模型并给出攻击仿真方法,最后以某应急物流网络为例,通过在Visual Basic平台下开发的程序,分别对两种攻击模式下该网络连通可靠性进行了仿真分析,得到了相应攻击模式下应急配送时间及有效需求点比例的变化曲线,验证了应急物流网络的复杂网络特性,分析了不同攻击模式对应急物流网络可靠性的影响。     

宜春市推进城镇化和新型城市建设研究

本文根据中央一号文件和宜春市社科联课题立项要求,对城镇化和城市建设概念进行了诠释,分析了当前宜春市的城镇化和城市规划建设概况,以较大篇幅、从以下五个方面对宜春市推进城镇化和新型城市建设进行了研究:城市规划、投融资渠道、人才引进、户籍制度、特色文化建设。探讨通过理论和实践相结合,推动宜春市新一轮城镇化建设高潮。     

责任成本核算之我见

责任成本就是指某成本中心的各项可控成本之和。可控成本是与不可控成本相对而言的,指的是成本费用依其责任主体是否能控制所认定的,凡是责任中心能控制其发生的成本称为可控成本,凡是责任中心不能控制其发生及其数量的成本称为不可控成本。     

基于授权的XML文档安全策略

随着网络应用中的XML数据量与日俱增,XML文档的安全问题也越来越受关注。本文在研究XML进行数据表示的特点的基础上,提出一种XML的安全策略,根据安全策略对XML文档树和文档内容加以保护。