Inferences for a Partially Varying Coefficient Model With Endogenous Regressors

In this article, we propose a new class of semiparametric instrumental variable models with partially varying coefficients, in which the structural function has a partially linear form and the impact of endogenous structural variables can vary over different levels of some exogenous variables. We propose a three-step estimation procedure to estimate both functional and constant coefficients. The consistency and asymptotic normality of these proposed estimators are established. Moreover, a generalized F-test is developed to test whether the functional coefficients are of particular parametric forms with some underlying economic intuitions, and furthermore, the limiting distribution of the proposed generalized F-test statistic under the null hypothesis is established. Finally, we illustrate the finite sample performance of our approach with simulations and two real data examples in economics.     

知识分布、衰减程度与产业集群创新模式的内在机制研究

以知识流动为研究视角,将集群创新过程中的知识溢出、吸收能力内生化,构建包含三种创新模式下的产业集群演化模型,重点分析集群知识分布和知识衰减程度与集群创新模式的内在机制及其对创新产出的影响,并进行仿真实验。研究表明：不同知识分布下,混合创新模式的创新产出表现最好,外部吸收创新模式与内部自主创新模式呈现出不同的创新产出演化路径;在外部吸收创新和混合创新模式下,均匀分布型产业集群的创新产出表现最好,集中分布型表现次之,异质分布型表现最差,而在内部自主创新模式下,集中分布型则表现最好;不同创新模式对知识衰减的敏感程度呈现阶段性差异特征。这些结论对产业集群创新和可持续发展具有很好的理论和实践指导意义。     

Performative family: homosexuality,marriage and intergenerational dynamics in China

Using in‐depth interview data on nominal marriages – legal marriages between a gay man and a lesbian to give the appearance of heterosexuality – this paper develops the concept of performative family to explain the processes through which parents and their adult children negotiate and resolve disagreements in relation to marriage decisions in post‐socialist China. We identify three mechanisms – network pressure, a revised discourse of filial piety and resource leverage – through which parents influence their gay offspring's decision to turn to nominal marriage. We also delineate six strategies, namely minimizing network participation, changing expectations, making partial concessions, drawing the line, delaying decisions and ending the marriage, by which gay people in nominal marriages attempt to meet parental expectations while simultaneously retaining a degree of autonomy. Through these interactions, we argue that Chinese parents and their gay adult children implicitly and explicitly collaborate to perform family, emphasizing the importance of formally meeting society's expectations about marriage rather than substantively yielding to its demands. We also argue that the performative family is a pragmatic response to the tension between the persistent centrality of family and marriage and the rising tide of individualism in post‐socialist China. We believe that our findings highlight the specific predicament of homosexual people. They also shed light on the more general dynamics of intergenerational negotiation because there is evidence that the mechanisms used by parents to exert influence may well be similar between gay and non‐gay people.     

韩国新村运动与我国社会主义新农村建设——"面向21世纪新农村建设中韩学术研讨会"述略

韩国新村运动,对我国社会主义新农村建设有着多方面的启迪。韩国新村运动不仅仅改善了农民生活环境,增加了农民收入,更重要的是提高了国民的社会伦理水平,如勤勉、诚信、节俭、自助、平等、合作等思想和精神,从而使新村运动逐步由政府推动变成农民的自觉行动。所有这些都是永远无法从资本和技术中获取的,这也许是最值得我们向韩国新村运动学习的内容。     

论赫哲族当代民族文化

本文在分析了赫哲族民族文化现状后指出,经过整合与重构的赫哲族文化具有多元性、现代性、亲合性、地域性和民族性的特征,是一种充满现代气息的民族文化。     

论《左传》中巫官文化与史官文化之消长

《左传》以其张扬的理性精神,昭示着春秋时期史官文化的发展与进步,与此同时,卜筮现象的大量存在,使《左传》在一定程度上更像是巫官文化与史官文化并存的产物。本文从《左传》文本中出现的大量卜筮现象入手,分析了这一现象背后,巫官文化和史官文化彼此的消长情况。《左传》中记载的卜筮现象,正说明史官文化最终覆盖了巫官文化,成为中华民族传统文化的基础。     

完善一人公司设立制度的若干构想

我国公司法确认了一人公司的法人地位,并对其进行了专门的规范。但公司法设立制度中禁止设立一人股份有限公司和禁止自然人重复设立一人公司的规定,不仅达不到有效防止一人公司滥用法人人格的目的,反而从一定程度上阻碍了一人公司在我国的发展。     

Two-Group Classification Using Neural Networks*

Artificial neural networks are new methods for classification. We investigate two important issues in building neural network models; network architecture and size of training samples. Experiments were designed and carried out on two-group classification problems to find answers to these model building questions. The first experiment deals with selection of architecture and sample size for different classification problems. Results show that choice of architecture and choice of sample size depend on the objective: to maximize the classification rate of training samples, or to maximize the generalizability of neural networks. The second experiment compares neural network models with classical models such as linear discriminant analysis and quadratic discriminant analysis, and nonparametric methods such as k-nearest-neighbor and linear programming. Results show that neural networks are comparable to, if not better than, these other methods in terms of classification rates in the training samples but not in the test samples.     

亚运会对广州体育场馆建设及经营管理的影响

广州亚运会体育场馆的建设应主要利用和改造现有的体育场馆,新建体育场馆和搭建简易体育场馆辅之。在投资上,以政府投入为主,通过土地置换、城市建设规划配套项目的开发权和经营权的发放等形式,把体育场馆的建设作为绑捆式投标项目向全社会公开招标,鼓励社会多渠道的资金投入。在社会主义市场经济体制下,公共体育场馆经营管理模式的建立要以管理体制改革为切入点,以体育场馆经营为核心,以市场为导向进行资源配置,以集约化经济为经营内容,以大型专业管理集团为管理实体,实现体育场馆的区域化和集约化综合经营管理。     

论意识形态的自组织性

意识形态的自组织性指的是意识形态在经济基础决定作用下的自我生成、自我规定、自我构造及自我发展。意识形态的自组织性具体表现为能动性、意向性、超越性、认知性、不平衡性、既与性。建构意识形态的自组织性理论具有重要的理论和实践意义。