欠发达地区技术进步与经济增长的实证研究——以甘肃省为例

欠发达地区经济增长由于受到市场化程度、资源配置效率、工业发展基础等影响,技术进步转化生产力方面并不高,经济增长效应不佳。通过用甘肃省经济数据拟合广义柯布-道格拉斯函数,计算出广义技术进步以及资本、劳动和技术进步对经济增长的贡献,得出甘肃省经济发展还处于高资本、劳动投入推动经济增长阶段,经济发展处于粗放型模式,科技进步转化效果并不明显。     

Saving behaviour and earnings uncertainty: Evidence from the British Household Panel Survey

For the first time, this paper uses a panel data set, the British Household Panel Survey, to analyse saving behaviour in Britain. One objective is to test the precautionary saving hypothesis, according to which households save to self-insure against uncertainty. Our results show that in accordance with this hypothesis, various measures of uncertainty based on earnings variability have a statistically significant effect on households' saving decisions. Moreover, in accordance with the life cycle model, households save more if they expect their financial situation to deteriorate. Received: 15 June 1999/Accepted: 4 January 2001     

The cost of children: May the collective approach to household behavior help?

The collective approach to household consumption behavior tries to infer from variables supposed to affect the general bargaining position of household members information on the allocation of consumptions goods and tasks among them. This paper investigates the extension of previous work to the case where children may be considered as a public consumption good by the two adult members of a household. The main question being asked is whether it is possible to retrieve from the aggregate consumption behaviour of the household and the relative earnings of the parents information on the allocation of goods between them and children. This alternative approach to the estimation of the ‘cost of children’ is contrasted with the conventional approach based on a ‘unitary’ representation of and demographic separability assumptions on household consumption behaviour. Received: 29 August 1997/Accepted: 26 November 1998     

在现实主义和现代主义的视野里寻求和谐生存之道——论D·H·劳伦斯的《儿子与情人》

D.H.劳伦斯在小说《儿子与情人》中,通过批判现实主义手法描述了主人公保罗的爱情悲剧和家庭悲剧,揭示了英国工业文明对自然环境及人类和谐生存状态的破坏。同时,作为一个现代主义作家,劳伦斯探索了人的潜意识及如何在现代文明中构建和谐生存之道。劳伦斯认为,人类只有与自然界保持和谐的关系、重建两性之间和谐、自然的关系,才能克服现代文明社会带来的弊端,实现生存状态的和谐。劳伦斯对人类生存困境的探索不仅为同时代人提供了获得救赎的全新思路,在当今呼唤和谐社会的时代,仍为我们提供了有益的借鉴。     

企业合作研发过程的知识共享博弈分析

企业合作研发过程中存在着知识共享博弈,知识共享博弈是企业合作研发过程中重要的知识行为,对其研究可以有效地辨识知识共享主体间博弈过程,为企业合作研发知识共享策略选择提供依据。运用博弈论思想,分析企业合作研发中知识共享的冲突及其原因,提出企业合作研发知识共享博弈的路径选择和解决思路,在此基础上,构建企业合作研发中知识共享博彝模型,求出知识共享博弈均衡解,并对博弈均衡解进行分析,指出了企业合作研发知识共享博弈行为策略,提高了企业合作研发知识共享效果。     

Measures of individual risk attitudes and portfolio choice: Evidence from pension participants

We use a large non-student sample to test how distinct measures of risk-attitudes relate to each other, to demographic characteristics and to real-life risk taking in the financial domain. These measures, namely the Bomb Risk Elicitation Task (BRET), self-reported willingness to take risks in general, the choice in a hypothetical lottery, the score in the Domain Specific Risk-Taking (DOSPERT) scale, appear to be positively correlated and exhibit a certain degree of consistency. Furthermore, a subset of these measures is driven by similar demographic characteristics as such that males are more risk seeking and risk-aversion increases with age. Using extensive data on the retirement portfolios of the participants during the years 2008–2014, we find that all of these measures are positively correlated with the riskiness of individual portfolios. The self-reported willingness to take risks in general appears to be the most relevant measure in predicting actual risk-taking behavior.     

Improving variance function estimation in semiparametric longitudinal data analysis

We propose an efficient and robust method for variance function estimation in semiparametric longitudinal data analysis. The method utilizes a local log‐linear approximation for the variance function and adopts a generalized estimating equation approach to account for within subject correlations. We show theoretically and empirically that our method outperforms estimators using working independence that ignores the correlations. The Canadian Journal of Statistics 39: 656–670; 2011. © 2011 Statistical Society of Canada     

Noninformative priors for linear combinations of normal means with unequal variances

For normal populations with unequal variances, we develop matching priors and reference priors for a linear combination of the means. Here, we find three second-order matching priors: a highest posterior density (HPD) matching prior, a cumulative distribution function (CDF) matching prior, and a likelihood ratio (LR) matching prior. Furthermore, we show that the reference priors are all first-order matching priors, but that they do not satisfy the second-order matching criterion that establishes the symmetry and the unimodality of the posterior under the developed priors. The results of a simulation indicate that the second-order matching prior outperforms the reference priors in terms of matching the target coverage probabilities, in a frequentist sense. Finally, we compare the Bayesian credible intervals based on the developed priors with the confidence intervals derived from real data.