The econometrics of female labor supply and children

This is a survey of applied econometric research on the effects of children on female labor supply. Reasons for interest in the topic, and a basic model and terminology, are reviewed. Concerns are raised about the possible endogeneity of child status variables, and about the instrumental variables approach for dealing with this problem. Alternative ways of conceptualizing and estimating child status effects are considered, together with selected empirical evidence. Relevant developments from the household demand literature are summarized. Basic issues of model choice are also discussed.     

冯雪峰论:“修正主义文艺“批判运动人物检讨(之一)

冯雪峰是“修正主义文艺”批判运动第一阶段（ １９５６～ １９６２）主要的批判对象．作 为唯一的参加过长征的左翼文艺理论家,冯雪峰于１９５７年遭遇清算,除了他那不合时宜的革命 现实主义理论的启蒙倾向,还有一个重要的原因,就是１９世纪３０年代已然形成、长期以来没 能解决的宗派主义从中作祟．     

Estimation of the Force of Infection from Current Status Data Using Generalized Linear Mixed Models

Based on sero-prevalence data of rubella, mumps in the UK and varicella in Belgium, we show how the force of infection, the age-specific rate at which susceptible individuals contract infection, can be estimated using generalized linear mixed models (McCulloch & Searle, 2001). Modelling the dependency of the force of infection on age by penalized splines, which involve fixed and random effects, allows us to use generalized linear mixed models techniques to estimate both the cumulative probability of being infected before a given age and the force of infection. Moreover, these models permit an automatic selection of the smoothing parameter. The smoothness of the estimated force of infection can be influenced by the number of knots and the degree of the penalized spline used. To determine these, a different number of knots and different degrees are used and the results are compared to establish this sensitivity. Simulations with a different number of knots and polynomial spline bases of different degrees suggest - for estimating the force of infection from serological data - the use of a quadratic penalized spline based on about 10 knots.     

论非专利技术的转让

非专利技术在技术转让中占有越来越重要的地位,其表现形式的多样化、内容的广泛性以及不受时间、空间限制的特点都使其较之专利技术更为有实用价值。非专利技术是以占有人采取保密的形式而形成事实上的独占资产。因而,在技术转让中,合同成为其唯一获得法律保护的途径。本文从非专利技术的产权确定、价格形成的依据以及非专利技术的保密等方面作了论述,说明非专利技术存在的价值以及在转让中应注意的问题。     

Semiparametric Additive Accelerated Life Models

In this paper we investigate the asymptotic properties of estimators obtained for the semiparametric additive accelerated life model proposed by Bagdonavicius & Nikulin (1995). This model generalizes the well known additive hazards model of survival analysis and is close to the general transformation model (see Dabrowska & Doksum, 1988). Asymptotic properties of the estimator of the regression parameter and the estimator of the reliability function are given in the case of right censoring for discretized data and a numerical example illustrates these results.     

Identification of composite (∑+II) arma models by relatively simpler models

In the real world situations, many time series are aggregates of two or more time series. An aggregation may take place due to an addition or the product or both of two or more time series. We are often interested in the study of the properties of aggregates which are, in turn, dependent on the properties of the constituent series. Motivated by this problem, the authors study in this paper the properties of models generated by the operator (Σ+II) on autoregressive-moving-average (ARMA) processes of orders (p_i,q_i), i = l→n . A few practical examples where such models have been used are given in the introduction and an illustrative numerical example is discussed at the end of the paper.     

高职院校学生顶岗实习中的人身伤害问题及法律保障

顶岗实习是学生在完成文化基础课、专业课以及校内专业实践课以后所进行的实践性教学环节。由于我国法律法规对顶岗实习学生合法权益尚未完善,导致顶岗实习学生在发生人身意外伤害事故时,维权非常困难。本文对顶岗实习的涵义、顶岗实习学生身份的界定和完善顶岗实习法律举措等几个方面的法律问题进行了探讨。     

我国农村劳动力回流的效应与对策分析

农村劳动力流动这一现象早在新中国成立不久就已经存在,但大规模跨区域流动并日渐成为令人注目的社会现象,则始于20世纪80年代后期,尤其是90年代初以来.改革开放初期,伴随着家庭联产承包责任制的实施,农业结构发生了重大变化,隐性的农村富余劳动力显性化,富余劳动力开始离开传统的农业进入其他领域,由农村进入城镇,这形成了一股不可阻挡的潮流,这也是农村人口流动的主流.但农村富余劳动力的流动交织着外流与回流并行的势头,在农村富余劳动力大规模外流的同时,部分外出劳动力放弃了外出生活,返回家乡.那么,这部分外出劳动力的回流会产生怎样的效应,如何鼓励积极性的回流,使之成为一种有序的回流,这对推动农村经济发展、解决"三农"问题是至关重要的.     

台湾地区失业人口特征分析

利用1992—2002年台湾地区人力资源相关数据,对台湾失业人口①状况进行了描述和分析,静态分析失业人口的绝对数量和相对构成并考察其性别、年龄和受教育程度方面表现出的特征及差异,动态分析和描述这11年来台湾失业人口的变动状况及发展趋势。认为失业问题的根本原因在于产业结构的变动,台湾当局执政角色的变化也制约了其经济发展,加剧了劳动力市场的结构性矛盾。     

教师“为迁移而教”的能力结构探讨

“为迁移而教”是教师的综合教学能力的一种具体表现 ,主要包括两大要素 :一是有关迁移以及“为迁移而教”的基本观念 ,二是“为迁移而教”的基本教学技能 ,具体有激发动机、编选与教授学科内容、教授学习策略以及评估迁移成效等教学技能