Linear regression analysis with inequality constraints on the regression parameters via empirical likelihood

An empirical likelihood ratio test is developed for testing for or against inequality constraints on regression parameters in linear regression analysis. The proposed approach imposes no parametric model nor identically distributing assumption on the random errors. The asymptotic distribution of the proposed test statistic under null hypothesis is shown to be of chi-bar-squared type. The asymptotic power under contiguous alternatives is also briefly discussed. Moreover, an adjusted empirical likelihood method is adopted to improve the small sample size behaviour of the proposed test. Several simulation studies are carried out to assess the finite sample performance of the proposed tests. The results reveal that the proposed tests could be valuable for improving inference efficiency. A real-life example is discussed to illustrate the theoretical results.     

大系统观下降解率与均衡价格的联络——资源有界引致的市场逻辑

资源稀缺下的市场定价,由于要素循环是必需的,故市场价格在受上变量和侧变量影响的同时,还受下变量的影响。通过构造劳动力—功能空间图,把表征为下变量的未来因子引入对均衡价格的决定中,并认为当期均衡价格由"未来商品供给和当前商品供给生成的总供给"与"未来商品需求和当前商品需求生成的总需求"联合决定,由此引入影响未来供给的降解率因子。因此,资源稀缺社会里,社会机制的设计和社会法则的提取应放在更大系统内探究。     

我国中小企业融资约束与创新基点

在分析我国中小企业融资结构的基础上,通过实证研究论证了我国中小企业当前仍然面临着较为严重的融资约束问题,提出中小企业应增强自身的资本形成能力,扩大内源融资;与银行、政府、大企业保持良好的合作关系,发展外源融资;拓展集群融资、集合发债等作为融资的创新基点,构建多元化的融资体系。     

怒江大峡谷区域旅游业发展问题诊断

作者探讨了怒江大峡谷旅游开发现状中所呈现的问题,认为旅游资源在质和空间分布上所存在的局限性是制约怒江大峡谷旅游业发展最根本的问题。在此立论基础上,针对怒江大峡谷旅游业发展的问题现状,提出相应的解决措施。     

The Higher Education White Paper: The Good,the Bad,the Unspeakable – and the Next White Paper1

This article argues that reforms of higher education finance for undergraduates in England introduced by the Blair government in 2006 provided a progressive strategy for achieving the central objectives of higher education of quality (better), access (wider) and size (larger). Reforms in 2012 are a not a strategy but a collection of ad hoc arrangements. They include the good (a higher fees cap, a higher interest rate on student loans, better information and improved support for part‐time study), the bad (abolishing most taxpayer support for teaching in the arts and humanities and the social sciences, and raising excessively the threshold at which loan repayments start) and the unspeakable (abolishing Education Maintenance Allowances and AimHigher). The reforms are fiscally costly and hence perpetuate the central problem of capped student numbers, and will not stand the test of time. The concluding section outlines the next White Paper.     

Optimal consumption and portfolio selection with negative wealth constraints,subsistence consumption constraints,and CARA utility

We consider the optimal consumption and portfolio selection problem with constant absolute risk aversion (CARA) utility. The economic agent in this model receives constant labor income, and her economic behavior is restricted on consumption and wealth, which are called the subsistence consumption constraint and the negative wealth constraint. We use the convex duality method to derive the value function and the optimal policies in closed-form solutions. Also we illustrate some numerical examples.     

Nonparametric estimation of multivariate extreme-value copulas

Extreme-value copulas arise in the asymptotic theory for componentwise maxima of independent random samples. An extreme-value copula is determined by its Pickands dependence function, which is a function on the unit simplex subject to certain shape constraints that arise from an integral transform of an underlying measure called spectral measure. Multivariate extensions are provided of certain rank-based nonparametric estimators of the Pickands dependence function. The shape constraint that the estimator should itself be a Pickands dependence function is enforced by replacing an initial estimator by its best least-squares approximation in the set of Pickands dependence functions having a discrete spectral measure supported on a sufficiently fine grid. Weak convergence of the standardized estimators is demonstrated and the finite-sample performance of the estimators is investigated by means of a simulation experiment.     

资源约束项目计划内在稳健性与资源使用效率关系

资源约束项目计划的内在稳健性受资源使用效率的影响,查明二者之间的影响关系,可为稳健性的项目计划制定和项目计划稳健性的预测提供依据。文章应用16种优先规则对Kolisch的j30算例集中的480个算例制定项目计划,计算出各项目计划的资源使用效率,通过仿真的方法得到各项目计划的内在稳健性值;实验结果表明,项目计划的内在稳健性与资源使用效率之间存在显著的负相关关系,即资源使用效率越高,项目计划的内在稳健性越低,这与直觉一致。     

乡村人居环境建设中的制度约束与优化路径

优化乡村人居环境,改善农户生活质量,统筹城乡发展是社会主义新农村建设的一项重要内容.目前我国乡村人居环境建设面临着基层组织管理制度、土地制度、户籍制度、投资制度和保障制度等方面的制度约束.针对一系列制度约束,从乡村人居环境建设内涵出发,构建了有利于促进乡村人居环境发展的新制度框架.应从创新农村市场经济制度,维护人居空间有序发展;完善财政转移支付制度,保障乡村人居公共物品供给;创新农村社区管理制度,重构乡村社会关系网络等方面进行制度创新.     

Understanding Sheng Nu (“Leftover Women”): the Phenomenon of Late Marriage among Chinese Professional Women

In the past few decades, there has been a rise in the number of single, unmarried Chinese professional women, which is known as the sheng nu or “leftover women” phenomenon. Through an interactionist grounded theory method, this study has located the interactional constraints faced by 50 single Chinese professional women that were issued by their male romantic partners and parents, respectively. “Discriminatory” and “controlling” gendered constraints issued by the women's male suitors and partners reflected the persistence of the Chinese patriarchal structure, and this was found to be the leading cause of the women being “leftover” in the marriage market. Parents' traditional views continued to exert strong influences on the women's marital choices, but this was seen to conflict with their more “modern” views toward advocating and supporting the women's strong economic achievements. The four different types of Chinese professional women that were constructed based on their different partner choice strategies not only gave rise to an in‐depth and nuanced understanding of the sheng nu phenomenon in China, but could also be generalized toward understanding the marital choices of single professional women in other patriarchal societies who faced similar dilemmas in reconciling interactional constraints imposed by men and parents alike.