On a Unified Generalized Quasi–likelihood Approach for Familial–Longitudinal Non‐Stationary Count Data

Abstract. In this paper, conditional on random family effects, we consider an auto‐regression model for repeated count data and their corresponding time‐dependent covariates, collected from the members of a large number of independent families. The count responses, in such a set up, unconditionally exhibit a non‐stationary familial–longitudinal correlation structure. We then take this two‐way correlation structure into account, and develop a generalized quasilikelihood (GQL) approach for the estimation of the regression effects and the familial correlation index parameter, whereas the longitudinal correlation parameter is estimated by using the well‐known method of moments. The performance of the proposed estimation approach is examined through a simulation study. Some model mis‐specification effects are also studied. The estimation methodology is illustrated by analysing real life healthcare utilization count data collected from 36 families of size four over a period of 4 years.     

中国重点行业绩效变化实证分析

基于1998-2004年中国国民经济重点行业的监测调查数据，应用主成分分析方法进行实证分析，结果表明：行业规模、行业发展能力因素对行业绩效的贡献逐渐增强；行业效益效率因素的贡献逐渐减弱。其中2002年以来，电信、电子、家电、电力、汽车、机械设备、纺织服装行业的绩效排名不断降低，建材、金属非金属、石化塑胶行业的绩效排名不断上升。     

论社会保障法的基本价值取向

理论界较一致地认为，社会保障法的基本价值取向是公平与效率。根据公平与效率的基本含义，对社会保障法的公平、效率价值观予以考察，却发现社会保障法的基本价值取向既不是公平，也不是效率。从社会保障的语义、社会保障法的产生动因及社会保障法的基本属性分析，社会保障法的基本价值取向应该是安全，包括个人生活安全与社会安全。     

大学科研效益现状与发展趋势——基于中西部地区合并高校的典型研究

为了研究合并大学资源重组后科研效益发展状况,文章选取我国中部地区13所合并大学1999年至2010年与科研相关的数据,运用因子分析对这些合并大学科研效益进行分析。研究表明,合并大学的整体科研效益在合并后呈先降后升的态势,合并后科研效益增长明显,大学合并有利于科研资源的优化与发展。     

大众媒体的经济分析

大众传播研究不能忽视大众媒体所有权和控制权的经济含义.这不仅仅是一个“谁拥有媒体”的问题.媒体产业的市场结构、企业行为、绩效以及公共政策之间的关系是构成媒体所有权的关键所在.     

Intermediate efficiency by shifting alternatives and evaluation of power

We study a modification of the notion of asymptotic intermediate efficiency of statistical tests by defining it in terms of shifting alternatives. We prove a theorem providing conditions for its existence and show that this modification is closely related to the original Kallenberg's asymptotic intermediate efficiency in a quite general setting. Next, we find estimates for differences between powers of the Neyman–Pearson test under original alternatives and that of a given test under shifted alternatives. We also present some simulation results. They attest to consistency of theoretical results with observed empirical powers for quite small sample sizes.     

Measuring effectiveness of production in the public sector

Key concepts in efficiency analyses are efficiency and effectiveness. Efficiency is popularly connected to ‘doing the things right’ and effectiveness to ‘doing the right things’. The paper elaborates upon the latter concept within a setting where resources are transformed into outputs under the control of a public provider, while outcomes with outputs as inputs represent higher social goals, but this production is outside the public provider׳s direct control. A new measure of overall preference effectiveness is introduced and its decomposition into output-oriented efficiency and output-mix efficiency is shown. The monumental task of getting the necessary information for calculating effectiveness is highlighted.     

LIKELIHOOD MOMENT ESTIMATION FOR THE GENERALIZED PARETO DISTRIBUTION

Traditional methods for estimating parameters in the generalized Pareto distribution have theoretical and computational defects. The moment estimator and the probability‐weighted moment estimator have low asymptotic efficiencies. They may not exist or may give nonsensical estimates. The maximum likelihood estimator, which sometimes does not exist, is asymptotically efficient, but its computation is complex and has convergence problems. The likelihood moment estimator is proposed, which is computationally easy and has high asymptotic efficiency.     

河北省产业结构水平和效益的动态分析

本文从产业结构的水平和效益两方面描述河北省1985—2006年间产业结构的变动过程,并通过与全国和国际经验的比较来反映河北生产业结构调整的成果及问题。分析显示:与全国水平相比,河北省产业结构水平与产业结构效益的关系出现偏差,呈现"高水平、低效益"和"低水平、高效益"交替出现的态势,尚未形成产业结构与效益相互促进、共同提高的良性循环。影响河北省产业结构水平和效益提高的核心因素是农村剩余劳动力转移与第三产业的发展。     

经济转型中航运价格双轨制过渡的经济学分析

在阐述经济转型与价格双轨制过渡基本理论的基础上,将航运价格的市场化纳入研究双轨制过渡的一般框架。通过对标准模型的修正,分析航运价格双轨制的资源配置效率和动态特征。研究发现,随着政府定价承运货物的份额缩减,航运企业可以更接近最优生产组合,从而从动态角度推动并轨。