The impact of coding time on the estimation of school effects

Multilevel growth curve models are becoming invaluable in educational research because they model changes in student outcomes efficiently. The coding of the time variable in these models plays a crucial role as illustrated in this study for the case of a three-level quadratic growth curve model. This paper shows clearly how the choice of a time coding affects school effects estimates and their interpretation. A new definition for school effects for growth curve models with random intercepts and slopes is proposed. This study recommends that the choice of a time coding should not only be based on the ease of interpretation and model convergence but also on its consequences on the student status and growth parameter estimates. The current application illustrates that in general the school effects for student growth in well-being and language achievement in secondary school, are greater for student growth than for student status.     

Business incomes in rural Nicaragua: the role of household resources,location, experience and trust

This paper analyses the determinants of business income for rural households in Nicaragua. A sample of 1030 households was studied in order to assess the importance of material and behavioural factors that influence income from business activity. The households are involved in manufacturing, trade, services or have a mixture of businesses. They generally have a low income and asset value. Households supplement their income from wages and agricultural activities. To estimate non-farm business income per employed person we analyse the impact of resources, location, entrepreneurial experience and trust. Our results show that household resources and entrepreneurial experience are significant determinants for business income in all sectors. Trust is also important, particularly generalized trust. The contribution of other forms of trust, such as institutional trust, depends on the sector in which households participate.     

The Wage Elasticity of Labour Supply: A Synthesis of Empirical Estimates

Summary This paper performs a meta-analysis of empirical estimates of uncompensated labour supply elasticities. For the Netherlands, we find that an elasticity of 0.5 for women and 0.1 for men is a good reflection of what the literature reveals. The elasticity for men hardly differs between countries, but for women some cross-country variation is found. The increasing participation rate of women may lead to a somewhat lower elasticity in the future. Both the specification of the hours function and the estimation method are found to affect elasticity estimates.      

中国金融市场与房地产投资的协整和Granger检验

本文通过对中国1985～2005年金融资产和房地产投资的年度数据进行协整和Granger因果关系检验,发现以金融资产为指标的金融市场和房地产投资之间存在长期和短期的均衡关系及单向因果关系,即金融资产的增加极大地促进了房地产投资总额的增加。     

Macroeconomic Consequences of Outsourcing: An Analysis of Growth, Welfare, and Product Variety

Outsourcing of non-core activities is nowadays a common business strategy. Declining transaction and transportation costs caused by the advent of Information and Communication Technology are a potentially important driving force behind this development. This paper provides a theoretical framework for analysing a firm's incentive to follow such a strategy of outsourcing and its consequences for macroeconomic variables like growth and product variety. We divide production activities into core and non-core activities. Non-core activities can be performed within the firm or can be mediated by the market. We derive conditions under which outsourcing occurs, and under which outsourcing is socially desirable. These conditions do not necessarily coincide. Outsourcing may hence be a profitable strategy for firms, while it is socially suboptimal. Crucial parameters in the model are the relative scale of core versus non-core activities, management costs, transaction costs and love for variety of consumers.     

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我国经济金融运行状况和相关政策解析

本文对我国经济金融运行现状进行了分析,阐述了货币政策适时适度调整,成功进行了宏观调控,促进了经济平稳较快发展。未来一段时期,我国金融业面临难得机遇和严峻挑战,需要注意把握政策的稳定性、针对性和灵活性,维护金融稳定,促进经济结构调整和发展方式转变。     

The Italian Banking Structure in the 1990s: Testing the Multimarket Contact Hypothesis

The multimarket contact hypothesis holds that more contacts between firms competing in the same markets may induce more collusion. This paper tests the hypothesis for the Italian banking market, analysing the behaviour of the largest Italian banks from 1990 to 1996. Market rivalry is gauged by changes in loan market shares and interest rates in each Italian province. We estimate the effects of increasing multimarket contacts, concentration indicators, banks' costs and loan demand on variations in market shares and interest rates. No support is found for the multimarket contact hypothesis. Geographical overlap in banking is positively correlated with changes in market shares, confirming the thesis of an overall increase in competition within the Italian banking system. Greater multimarket links also seem to correspond to lower lending rates.
(J.E.L.:G21, C33, L40.)     

现代畜牧企业社会责任初探

本文主要探讨了现代畜牧企业社会责任内容以及当前我国畜牧企业社会责任存在的问题及原因。对于如何提升畜牧企业社会责任,本人认为主要从政府、社会层面、企业层面和行业层面来提升现代畜牧企业的社会责任。