Estimating coefficients of single-index regression models by minimizing variation

This paper proposes a novel estimation of coefficients in single-index regression models. Unlike the traditional average derivative estimation [Powell JL, Stock JH, Stoker TM. Semiparametric estimation of index coefficients. Econometrica. 1989;57(6):1403–1430; Hardle W, Thomas M. Investigating smooth multiple regression by the method of average derivatives. J Amer Statist Assoc. 1989;84(408):986–995] and semiparametric least squares estimation [Ichimura H. Semiparametric least squares (sls) and weighted sls estimation of single-index models. J Econometrics. 1993;58(1):71–120; Hardle W, Hall P, Ichimura H. Optimal smoothing in single-index models. Ann Statist. 1993;21(1):157–178], the procedure developed in this paper is to estimate the coefficients directly by minimizing the mean variation function and does not involve estimating the link function nonparametrically. As a result, it avoids the selection of the bandwidth or the number of knots, and its implementation is more robust and easier. The resultant estimator is shown to be consistent. Numerical results and real data analysis also show that the proposed procedure is more applicable against model free assumptions.     

山东省海岸带管理派出机构构建探索

山东省海岸线长度占全国的六分之一,海洋经济发展迅速,设置海岸带管理派出机构是海岸带管理现状的需要。山东省沿海41个县、市（县级）、区应该设立县级海岸带管理委员会,7个沿海地级市设立市海岸带管理委员会,省政府设立省海岸带管理委员会,统筹全省海岸带事务,督导实施省海岸带规划。根据基层构建的不同,可以分为两种方案：各部门海岸带分局模式和海岸带事务公共服务中心模式。     

“I Wish to be Self-Reliant”: Aspiration for Self-Reliance,Need and Life Satisfaction,and Exit Dilemma of Welfare Recipients in Hong Kong

This qualitative study explores the welfare recipients’ experiences of and attitudes toward the welfare benefit system in Hong Kong. A sample of 19 welfare recipients from six main recipient groups was interviewed, some twice. This study finds that the recipients have strong aspirations to exit the welfare benefit system. The welfare application process is painful; they are strongly stigmatized; they do not have sufficient resources to meet many of their expected needs; and, after all, they have strong ethos for self-reliance. However, they remain in the benefit system. This study looks into this paradox and the challenges facing the welfare benefit system in Hong Kong in terms of providing ontological security on the one hand and promoting self-reliance on the other.     

建筑物理在建筑设计中的应用

随着建筑业的迅速发展,建筑物理在建筑设计中的应用越来越广泛,笔者从三个方面论述建筑物理在建筑设计中的应用。     

Professionalization and Cost Efficiency of Fundraising in Charitable Organizations: The Case of Charitable Foundations in China

This study examines the effects of professionalization on the cost efficiency of fundraising organizations in a unique research context, Chinese charitable foundations. Two important professionalization measures, professionalized human resource management and accounting practices, are adopted. Using data from audited annual reports from 2005 to 2009, we find that professionalization in general enables foundations to increase their fundraising cost efficiencies. However, further analysis indicates that this positive effect only occurs in private but not in public foundations. Furthermore, the positive effect of professionalization is more significant when raising unrestricted funds than when raising restricted funds from donors.

     

发电机端部振动光纤传感测试方法的研究

在理论上建立了光纤加速度传感器的工作模型,推导出了光纤传感器输出光信号受到振动调制的解析表达式,并分析了光纤传感器的输出幅频特性及输出信号与振动加速度之间的线性关系。文中还提出了一种新型的以光纤加速度传感器为基础构成的光纤振动测试系统设计方案,研究成功的光纤振动测试系统成功地应用于上海电机厂125MW和30MW大型汽轮发电机定子绕组瑞部振动测试真机试验,获得了满意的结果。     

高速旋转体温度分布光纤传感测试方法的研究

本文从理论、实验上分析了半导体 GaAs 本征单晶片透过光强与温度的关系特性.提出了一种新型的高速旋转体温度分布光纤传感测试方法,根据其测试原理研制成功的样机测试系统在龙羊峡水电站32万瓩水轮发电机上进行真机试验.取得了较为满意的结果.     

提高紫外分光光度法测定水中总氮方法精确度的研究

探讨了用紫外分光光度法测定水中总氮时，试剂质量、配制方法、消化温度与时间、冷却时间、所用水与玻璃器皿的纯净度等对测定结果的影响．     

海洋行政管理学基本理论体系的发展构想

海洋行政管理学属于传统行政管理学范畴,目前尚处于基本理论体系构建的初级阶段,在理论基础、行为工具等方面尚待完善,也未形成较强的学术气候,不能满足海洋强国实践的要求。发展海洋行政管理学应该从工具性、差异性、生态性、系统化的原则入手,从海洋行政管理学概念阐释、海洋行政管理理论基础、海洋行政管理理念、海洋行政管理主体、海洋行政管理行为工具、海洋行政管理实践等六个部分完善理论的基本框架,并从跨学科整合、争取学术话语权、开展海洋实践等方面提出深化海洋行政管理学发展的建议。