农户参与情境下贫困乡镇旅游精准扶贫路径

旅游扶贫是一种新的产业扶贫方式,通过发挥旅游业的联动作用,带动贫困乡镇经济发展,使当地居民脱贫的同时能提供更多就业机会,从而提升贫困地区的城镇化发展水平、减轻社会的养老服务压力。但是,在实践过程中存在着旅游扶贫资金“瓶颈”、旅游项目同质化、扶贫对象未能精准识别、旅游开发与管理人才缺乏等问题。笔者基于对辽宁省贫困乡镇旅游扶贫取得的成效、存在的问题以及农户参与旅游扶贫项目行为的分析,探讨了农户参与情境下的旅游精准扶贫机制,提出了具体的实施策略。     

On the estimation of the marginal density of a moving average process

The authors present a new convolution‐type kernel estimator of the marginal density of an MA(1) process with general error distribution. They prove the √n; ‐consistency of the nonparametric estimator and give asymptotic expressions for the mean square and the integrated mean square error of some unobservable version of the estimator. An extension to MA(q) processes is presented in the case of the mean integrated square error. Finally, a simulation study shows the good practical behaviour of the estimator and the strong connection between the estimator and its unobservable version in terms of the choice of the bandwidth.     

Estimating generalized semiparametric additive models using parameter cascading

Elimination of nuisance parameters is a central but difficult problem in statistical inference. We propose the parameter cascading method to estimate statistical models that involve nuisance parameters, structural parameters, and complexity parameters. The parameter cascading method has several unique aspects. First, we consider functional relationships between parameters, quantitatively described using analytical derivatives. These functional relationships can be explicit or implicit, and in the latter case the Implicit Function Theorem is applied to obtain the required derivatives. Second, we can express the gradients and Hessian matrices analytically, which is essential for fast and stable computation. Third, we develop the unconditional variance estimates for parameters, which include the uncertainty coming from other parameter estimates. The parameter cascading method is demonstrated by estimating generalized semiparametric additive models (GSAMs), where the response variable is allowed to be from any distribution. The practical necessity and empirical performance of the parameter cascading method are illustrated through a simulation study, and two applied example, one on finding the effect of air pollution on public health, and the other on the management of a retirement fund. The results demonstrate that the parameter cascading method is a good alternative to traditional methods.     

关系稳定性与零售商感知的机会主义行为——直接影响与供应商承诺的间接影响

研究了关系稳定性对零售商感知的供应商机会主义行为的直接影响,以及关系稳定性通过供应商承诺这一中间变量对零售商感知的供应商机会主义行为的间接影响。通过对中国家电行业160对供应商与零售商关系的问卷调查,采用因子分析和结构方程模型的方法对概念模型及假设进行了验证,得出的研究结果表明,双方良好的关系态度既可以直接降低零售商感知的供应商机会主义行为,也可以通过增加供应商的忠诚性承诺和减少其算计性承诺来降低零售商感知的供应商机会主义行为;虽然关系长度对零售商感知的供应商机会主义行为的影响不明显,但它却可以通过增加供应商的忠诚性承诺和算计性承诺来降低和提高零售商感知的供应商机会主义行为。     

法律与宗教学术研讨会综述

由汕头大学法学院、香港大学法学院主办,普世社会科学研究所与太平洋学报协办的法律与宗教学术研讨会于2006年12月在北京友谊宾馆举行。此次会议的宗旨是"建设现代法治,构建和谐社会"。来自汕头大学、香港大学、北京大学、中国社会科学院、中央党校、国家行政学     

微内核结构操作系统中文件系统服务器的实现

论述在微内核结构操作系统中文件系统服务器的实现原理和方法，介绍了客户／服务器模型文件系统中，实现文件系统调用的消息的生成及传送，服务器端口的管理，服务器的建立过程和客户程序的请求过程。     

Linearly admissible estimators of mean vector with respect to balanced loss function in multivariate statistics

The authors discuss the bias of the estimate of the variance of the overall effect synthesized from individual studies by using the variance weighted method. This bias is proven to be negative. Furthermore, the conditions, the likelihood of underestimation and the bias from this conventional estimate are studied based on the assumption that the estimates of the effect are subject to normal distribution with common mean. The likelihood of underestimation is very high (e.g. it is greater than 85% when the sample sizes in two combined studies are less than 120). The alternative less biased estimates for the cases with and without the homogeneity of the variances are given in order to adjust for the sample size and the variation of the population variance. In addition, the sample size weight method is suggested if the consistence of the sample variances is violated Finally, a real example is presented to show the difference by using the above three estimate methods.     

档案中所见的部聘教授

部聘教授是抗战时期国民政府教育部实施的尊师重教、稳定队伍的一项重要举措。受时下教育部推行的长江学者特聘教授制度的影响,坊间和各种传媒对历史上部聘教授这一群体颇为关注,但都不同程度地存在时间、名单、学科、人数等等多方面的错误。本文主要利用典藏在海峡两岸的档案史料,对抗战时期部聘教授的荐选经过、群体构成和教学、科研情况进行考察,以订正其中以讹传讹的错误,并为今天的教师聘任提供借鉴。