Local estimation for varying-coefficient models with longitudinal data

Varying-coefficient models are very useful for longitudinal data analysis. In this paper, we focus on varying-coefficient models for longitudinal data. We develop a new estimation procedure using Cholesky decomposition and profile least squares techniques. Asymptotic normality for the proposed estimators of varying-coefficient functions has been established. Monte Carlo simulation studies show excellent finite-sample performance. We illustrate our methods with a real data example.     

社会工作专业服务的本土框架和理论依据 ——一项本土专业服务场域的动态分析?

近十年来，在政府的大力推动下，中国社会工作的发展已经由体制外逐渐走进体制内，与体制的融合成为最迫切、最关键的问题，而融合的最基础专业服务场域就是社区。文章针对社区专业社会工作者与居委会动态关联的分析发现：（1）居委会承担着管理和服务双重角色，采取综合管理服务方式，与追求专业服务的社会工作存在不同的服务逻辑；（2）借助项目综合社会工作服务，能够把专业社会工作服务与居委会的综合管理服务融合起来。两种常见的融合方式，一是注重社区整体能力提升的社区社会工作；二是关注专项服务延伸的社区的社会工作；（3）本土社会工作专业服务的理论依据是“双主体（社会工作者和居委会）”的项目综合社会工作服务的场景服务逻辑，有别于西方七八十年出现的注重在实际生活场景中开展的综合社会工作服务逻辑。     

从“稻鱼鸭共生”看侗族的原生饮食——以贵州省从江县稻鱼鸭共生系统为例

侗族先民以生产糯稻为主，并利用稻田养鱼鸭，创造了侗族地区“稻鱼鸭共生”的原始有机农业文化经典形式。侗族特有的生存环境和农耕方式，形成了侗族人民食不离酸、喜糯食、喜酒、好鱼、茶饮独特等饮食特点及文化。侗族的原生食品加工方法独特，选料考究，营养价值高，富含各种人体所必需的营养物质，特别是以鱼类为加工原料的侗族酸食富含人体所需的可溶性钙是新鲜鱼食品的16倍以上，“稻鱼鸭共生”系统成为侗族食材的一个重要来源。稻鱼鸭复合系统保证了侗族传统食品的特殊性及无公害性，只有优质的传统原生态食材才能保证传统民族食品的传统性，保护“稻鱼鸭共生”系统不仅为民族食品的传承和发展提供了原料的保障，也为侗族传统食品产业化打下了坚实的原料供给基础。     

《日本遗孤》读后

最近，我有幸读到辽宁作家刘国强的长篇纪实文学专著《日本遗孤》，感受非常强烈。虽然，以往也接触过一些类似题材的作品，但应该说，这本书确有它自身的特色和独具的长处，就我所获得的印象，归纳起来有以下几点：     

平等服务和个性化信息服务——高校创建新型图书馆的两个核心理念

给读者提供平等的信息服务是现代图书馆首要的核心理念。现代网络信息技术恰好为个性化服务提供了方便。个性化服务需要图书馆员付出许多特殊的劳动,为保持服务平等性的纯洁,可采取适当对其提供了特殊服务的读者用服务收费的办法来实现平等服务的宗旨,以取得与普通读者平等的待遇,从而实现平等服务和个性化服务的两全其美。     

Depletion Effect of Work-Leisure Conflict: A Daily Diary Study

The negative effect of work-leisure conflict has attracted the attention of researchers. However, no previous research has determined the relationship between work-leisure conflict and ego depletion. Therefore, this study explores the relationship between daily work-leisure conflict and ego depletion, as well as the role of individuals’ negative emotions and core self-evaluations in this process based on ego depletion theory. Through the method of daily diary research, 77 employees were tracked for 7 consecutive work days. The results show that work-leisure conflict is positively related to employee ego depletion, that the negative emotions play a mediating role in this relationship and that core self-evaluations moderate the indirect effect of work-leisure conflict on ego depletion through negative emotions. In this study, daily diary method is used to verify the dynamic characteristics of work-leisure conflict, negative emotions and ego depletion, and some new insights into how to reduce employee ego depletion are provided.

     

基于HHM-RFRM的船舶航行风险评估方法研究

船舶航行风险是由各种风险因素交互作用产生。综合 HHM-RFRM 理论，构建船舶航行多维风险情景危险度测度模型，以风险因素耦合视角探讨船舶航行风险管理问题。在船舶航行多维风险情景危险度测度模型中结合贝叶斯定理，对船舶航行风险情景进行了定性与定量化过滤、评级。最后以大连港某从事商务活动的货船为例，验证了所提出方法的可行性。传统的风险评估方法只能评估单个风险因素对系统的影响，此评估方法克服了这一局限性，为船舶航行风险管理提供新的视角。     

新增硕士学位授予单位研究生培养机制研究

新增硕士学位授予单位在研究生培养方面既有优势,也存在劣势.为保证研究生培养质量,新增硕士学位授予单位应以质量优先、过程控制,扬长避短、特色发展为原则,从生源、导师、学位授予标准、培养条件、质量监控等方面入手,充分发挥培养优势,全力弥补发展短板,建立健全研究生培养机制.     

THE IMPORTANCE OF LEGAL FORM OF ORGANIZATION ON SMALL CORPORATION EXTERNAL FINANCING

This article quantitatively evaluates the impact of legal form of organization (LFO) choices, C versus S corporation, on small business external financing. A treatment effect model is formulated and estimated to examine the relationship between corporate types and chances of obtaining external financing. The estimation takes into account self‐selection bias associated with LFO choices. This article finds that LFO choices mainly affect small corporations' access to external equity capital, but have no significant impact on loan financing. Specifically, when a small corporation selects the C corporate legal form, the probability of obtaining new external equity is eight times higher compared to when it selects the S corporate legal form. Furthermore, the results suggest that better access to external equity investments, loosening business capital constraints, leads to better growth prospects for small C corporations. These empirical results have important macro‐economic implications on corporate financial and fiscal policies. (JEL G32, G38)     

论新媒体冲击下纸媒的生存与发展——以报纸为例

互联网的发展、智能手机的普及使传统的传媒环境和格局发生了翻天覆地的变化。新媒体的崛起与壮大给以纸媒为代表的传统媒体带来了前所未有的冲击，但不可否认的是，纸媒自身依然有不可替代的优势。本文主要以报纸为例，从纸媒传播内容的深度和可信度、纸媒对于受众文化素质的要求以及纸媒的表现形式、和受众的互动等方面的特点入手，分析在新媒体的冲击下纸媒所面临的生存现状，并且在此基础上指出将来纸媒应该如何利用新媒体的技术来促进自身的发展，更好地实现新媒体与传统媒体的融合。