Editorial

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Editorial

     

Estimation of generalized linear latent variable models

Summary.  Generalized linear latent variable models (GLLVMs), as defined by Bartholomew and Knott, enable modelling of relationships between manifest and latent variables. They extend structural equation modelling techniques, which are powerful tools in the social sciences. However, because of the complexity of the log-likelihood function of a GLLVM, an approximation such as numerical integration must be used for inference. This can limit drastically the number of variables in the model and can lead to biased estimators. We propose a new estimator for the parameters of a GLLVM, based on a Laplace approximation to the likelihood function and which can be computed even for models with a large number of variables. The new estimator can be viewed as an M -estimator, leading to readily available asymptotic properties and correct inference. A simulation study shows its excellent finite sample properties, in particular when compared with a well-established approach such as LISREL. A real data example on the measurement of wealth for the computation of multidimensional inequality is analysed to highlight the importance of the methodology.     

提高遗传学教学效果的改革与实践

在教学时数压缩、生源构成复杂的新形势下，以细菌和病毒的遗传为例，总结了提高遗传学教学效果的课程改革方法：精选朱军《遗传学（第二版）》教材作为组织教学的蓝本，进行系统的知识体系调整与整合，对教学难点进行、巧妙设计，整体教学内容做到概念明确，重点突出，由浅入深，前后呼应，力争用简单的语言、明晰的逻辑关系展开遗传学教学。     

From critical sociology to public intellectual: Pierre Bourdieu and politics

By the late 1990s, Pierre Bourdieu had become the primary public intellectual of major social scientific status at the head of the anti-globalization movement that emerged in France and in other Western European countries. This article discusses how Bourdieu became a leading public intellectual, a role that seems to contrast with his early years as a professional sociologist. It explores what seemed to change in Bourdieu’s activities and outlook as sociologist and what seems to have remained constant. It identifies several institutional conditions that seemed necessary for Bourdieu to be able to play the kind of public intellectual role he did in his later years. Bourdieu’s movement from a peripheral position to a central location in the French intellectual field, the changing character of the field itself, the growing influence of the mass media in French political and cultural life, the failures of the French Socialists in power, a cultural legacy of leading critical intellectuals in France, a unifying national issue of globalization, and the political conjuncture in 1995 all intersected in ways that opened a path for Bourdieu to choose new and more frequent forms of political action. His responses to that combination of factors at different moments reveal both a striking continuity in desire to preserve the autonomy of intellectual life and a change in view and strategy on how best to do that. The article concludes with a brief evaluation of Bourdieu’s public intellectual role.     

论建筑企业在买方市场条件下的国际竞争力

国际建设市场是典型的买方市场，为恰当评价建筑企业在买方市场下的国际竞争力，以便为我国建筑企业制定竞争战略，建立了买方市场竞争机制下的建筑企业国际竞争力分析路径模型。该模型涵盖了建筑企业市场定位、五力驱动模型、直接竞争要素及建筑企业国际竞争力层次关系。研究表明，该模型能够体现国际建设市场的竞争特点和企业战略管理的动态过程，沿此分析路径，可客观地获得分析建筑企业国际竞争力构成要素。