开放式证券投资基金费用率的实证研究

我国证券投资基金费用结构的设计较多地借鉴了美国投资基金业的经验,但由于依附的资本市场发展程度不尽相同,在费用种类和费用比率方面还存在着一定差异。基金运作费用是我国投资基金管理过程中一个有争议的话题。本文从多角度对我国开放式证券投资基金运作费用的现状进行了实证研究采用多元线性回归方法,以中国开放式证券基金费用率为主要研究对象,结合国外对于此问题的相关研究,从基金的业绩,单个基金的规模,以及基金类型三个方面进行实证分析。     

区域物流网络结构演化分新与实证

区域物流网络结构演化分析可以了解区域物流的本质特征,认为聚集与扩散是演化的动力机制,根据其空间结构演化阶段可分为四个阶段。最后用赫佛因得指数（HI）和分布非均衡系数《占）模型。以湖南省为例验证区域物流网络结构的演化和发展。     

经济学视野中的毕业生专业对口问题实证分析

目前我国高校毕业生的专业不对口问题十分严重,从经济学的角度看,不仅浪费了部分高等教育投资,还影响了我国的高等教育收益。本文认为这个问题的产生主要是由各高校之间专业重复设置及专业设置的滞后性、国家教育制度僵化和学生专业选择的盲目性这三方面的原因形成的。建议国家要充分发挥宏观调控作用,高校应根据本校和市场实际需求情况设置专业,而个人在进行专业选择时要提前对专业各方面信息有所了解,通过高等教育的良性发展为我国经济社会的发展更好的服务。     

影响管理类大学生创新能力培养因素的实证研究

基于SPSS16.0软件的应用,应用大学生创新能力培养和多元统计分析中的因子分析法,结合管理类大学生培养的现状,对影响管理类大学生创新能力培养的因素进行了深入的分析与研究。在总结、提炼管理类大学生创新能力影响因素的基础上,采用实证研究的方法,通过问卷调查和因子分析法对这些因素进行分析与修正,得出启示与结论。     

汇率变动和退税率调整对中国出口影响的实证研究

"消费惯性"影响着一国内需,相应的"外需惯性"则影响着一国的出口。对于中国而言,由于外需消费群体的相对稳定性,使"外需惯性"成为影响其出口的主要因素。同时,中国特有的出口退税率调整政策以及汇率变动也不同程度地影响着中国的出口。从长治久安的发展战略考虑,中国必须逐步减少"外需惯性",而增强本国的"消费惯性",并科学准确地把握各种宏观经济政策的效果,更加有效地调控中国经济的发展。     

Theorizing,testing, and concluding for mediation in SCM research: Tutorial and procedural recommendations

Empirical research in Supply Chain Management is increasingly interested in complex models involving mediation effects. We support these endeavors by directing attention to the practices for the theorizing of, the testing for, and the drawing of conclusions about mediation effects. Our paper synthesizes diverse literature in other disciplines to provide an accessible tutorial as to the mathematical foundation of mediation effects and the various methods available to test for these effects. We also provide guidance to SCM scholars in the form of eight recommendations aimed at improving the theorizing of, the testing for, and the drawing of conclusions about mediation effects. Recommendations pertaining to how mediation effects are hypothesized and stated and how to select among methods to test for mediation effects are novel contributions for and beyond the Supply Chain Management discipline.     

Rough-and-ready assessment of the degree and importance of smoothing in functional estimation

In nonparametric estimation of functionals of a distribution, it may or may not be desirable, or indeed necessary, to introduce a degree of smoothing into this estimation. In this article, I describe a method for assessing, with just a little thought about the functional of interest, (i) whether smoothing is likely to prove worthwhile, and (ii) if so, roughly how much smoothing is appropriate (in order-of-magnitude terms). This rule-of-thumb is not guaranteed to be accurate nor does it give a complete answer to the smoothing problem. However, I have found it very useful over a number of years; many examples of its use, and limitations, are given.     

Estimation and testing of crossing‐points in fixed design regression

Many phenomena in the life sciences can be analyzed by using a fixed design regression model with a regression function m that exhibits a crossing‐point in the following sense: the regression function runs below or above its mean level, respectively, according as the input variable lies to the left or to the right of that crossing‐point, or vice versa. We propose a non‐parametric estimator and show weak and strong consistency as long as the crossing‐point is unique. It is defined as maximizing point arg max of a certain marked empirical process. For testing the hypothesis H₀ that the regression function m actually is constant (no crossing‐point), a decision rule is designed for the specific alternative H₁ that m possesses a crossing‐point. The pertaining test‐statistic is the ratio max/argmax of the maximum value and the maximizing point of the marked empirical process. Under the hypothesis the ratio converges in distribution to the corresponding ratio of a reflected Brownian bridge, for which we derive the distribution function. The test is consistent on the whole alternative and superior to the corresponding Kolmogorov–Smirnov test, which is based only on the maximal value max. Some practical examples of possible applications are given where a certain study about dental phobia is discussed in more detail.     

近十年WTO框架下国际反倾销状况及趋势实证研究

在中国加入WTO十周年之际,本文根据WTO官方网站所提供的数据,从国际反倾销措施发起的数量、国别、地区和行业分布等角度综合分析WTO成员方所提起的国际反倾销措施的状况,以期揭示WTO框架下国际反倾销措施的特点、原因和趋势等情况。同时,本文也分析和总结我国近10年来反倾销的状况和趋势,以便更好地应对国际贸易摩擦和有效地维护国家的利益。