市场结构、汇率转嫁与出口

汇率变化是影响出口贸易的重要因素。在传统的国际贸易理论中,虽然对汇率变化影响出口贸易的机制进行了详细分析,但它没有考虑到市场结构的影响。本文从市场结构的角度出发,分析在不完全竞争的市场结构下,拥有市场势力的企业的决策怎样影响到汇率的变动和产品的出口。本文的研究结果表明,在不完全竞争的市场结构下,汇率转嫁是不完全的,因此,只有大的持久的汇率贬值或升值才会对出口贸易量产生明显的效应。     

Simulation driven inferences for multiply imputed longitudinal datasets*

In this article, we demonstrate by simulations that rich imputation models for incomplete longitudinal datasets produce more calibrated estimates in terms of reduced bias and higher coverage rates without duly deflating the efficiency. We argue that the use of supplementary variables that are thought to be potential causes or correlates of missingness or outcomes in the imputation process may lead to better inferential results in comparison to simpler imputation models. The liberal use of these variables is recommended as opposed to the conservative strategy.     

从大中型企业的科技发展现状看新疆科技改革

在"科教兴新"战略的指引下,加快新疆科技改革已成为各方共识.新疆大中型企业的科技发展现状反映出新疆的科技发展存在不少问题.以市场为导向,以科技企业为载体,加大科技开发力度,建立适应经济发展的科技投入体系,提高专利技术转化率是解决诸多问题的重要对策.     

农地征用补偿安置制度研究综述

本文在广泛查阅、研究了近十年来有关征地补偿安置制度这一热点专题的大量文献的基础上，梳理、比较、分析了各界专家学者在征地补偿基本理论、合理标准、改革思路等主要问题上的研究进展和不足，旨在服务于今后的理论研究和实践工作。     

物流市场供需的动态弹性分析

运用系统动力学的思想,通过对物流市场特点的分析,借助于动态弹性分析手段建立了物流市场供需的动态弹性模型。根据模型的结果模拟出了物流市场的供需趋势图,并借助于一个实例进行了具体运用,较准确的预测出物流市场的供需趋势,为决策提供了很好的支持。     

高技术产业与经济增长关联性的实证分析

文章通过1995～2004年高技术产业的相关数据,建立了数学模型,运用实证分析的方法,求得我国和典型地区高技术产业各行业对GDP的产出弹性,得出不同地区均有各自优势行业的结论,同时还分析了高技术产业对我国三次产业的调整作用,为我国高技术产业发展规划提供决策参考。     

World Oil Depletion Models: Price effects compared with strategic or technological interventions

World oil depletion, including natural gas liquids, was modelled in the past by many authors. Recently, Guseo and Dalla Valle have introduced and Guidolin has applied a new approach following perturbed life-cycle diffusion models. Here we examine joint effects of economic and strategic or technological interventions using a Generalized Bass Model (GBM). Statistical analysis takes into account three different hierarchical levels: natural diffusion, long memory interventions and stochastic components. The main results confirm the statistical significance of historical 1970s shocks and highlight a strong long memory effect due to an increase in oil production after World War II. The estimated peak-date, 2007, and the 90% depletion time, 2019, are determined under an equilibrium intervention hypothesis.     

Linking Public Investment to Private Investment. The Case of Spanish Regions

Public investment constitutes one of the main instruments of regional policies. The existence of a direct link between infrastructure and regional income per capita is usually accepted. Literature also describes a positive effect of public investment on private capital accumulation. This paper seeks to provide new empirical evidence on this latter relationship for the case of Spanish regions over the period 1965–1997 using panel data methodology. The results show a positive effect of productive and social public investment (especially in education) on private investment. The spillover effects generated by the productive infrastructures located in other regions do not seem to encourage the private investment in neighbouring regions. Public consumption and interest rate exert a negative influence on private capital accumulation. These results are robust to changes in the econometric specification.     

Gender differences in self‐employment

This paper examines the factors that influence transitions into self‐employment, paying particular attention to gender differences. We find that: (i) men are more responsive to the wage differential between wage/salaried employment and self‐employment; (ii) liquidity constraints are more important for men; and (iii) the link between father's self‐employment status and the probability of self‐employment is stronger for men. Taken together, these results suggest that, for women, self‐employment is a closer substitute for part‐time work and labour‐market inactivity than it is for men. We attribute such differences to the different labour market opportunities and occupational strategies of women.     

Testing separability of public consumption in household decisions

In this paper we propose a sequential strategy, based on the microeconomic approach of the demand theory, in order to test for separability between private and public consumption. The aim of the present work is to verify, using a conditional almost ideal demand system, whether the different components of public consumption exert conditioning effects on the allocative structure of private spending. The empirical estimation of the model and the separability tests are developed for both a demand system in five functional categories of private spending, and for a demand system in six categories, where the private expenditures on those goods and services which can also be offered by the public sector are enclosed in a single functional category. The results of the separability tests, obtained using UK data for the 1974–2000 period, show that public individual consumption plays an important role in modifying consumer choices, while public collective consumption does not affect private consumption behaviours. The relationships between the different components of private spending and public individual consumption are both of substitutability and complementarity; in particular, we find that public individual consumption and the corresponding private expenditures on ‘Health, education, recreation and social protection’ are complements.