中国制造还具有劳动力成本优势吗

本文利用2002-2011年的制造业数据核算比较了中国与主要竞争国家的制造业单位劳动力成本,发现我国单位劳动力成本已经高于印尼、泰国和马来西亚等东南亚国家。具体地,东部地区单位劳动力成本2002年以后高于印尼,2007年超过我国中西部地区和泰国,2011年超过马来西亚;中西部地区单位劳动力成本2002年以后高于印尼,2009年超过泰国,2011年超过马来西亚,主要原因在于我国小时劳动力成本上升过快。因而,与印尼、泰国、马来西亚等东南亚国家相比,我国已不具有劳动力成本优势,再加上近年来我国人口红利的消失,中西部地区劳动力成本也已高于东南亚国家,因而,可以解释我国中西部地区为何没能及时接收东部地区的产业转移。     

The population policy of the USSR

Developments in population policy in the USSR are outlined in this editorial. Mention is made of achievements in lowering mortality, particularly in the 1950s and 1970s. Recently adopted pro-natalist measures are described, and the results are stated to ba a rise in the birth rate in 1983 that was sustained in 1984 and 1985. Attention is also given to policies designed to encourage labor migration in response to labor shortages in some regions.     

得失与启示：我国统计学博士学位论文选题统计分析

 统计学博士是统计科研的中坚力量之一,其博士论文在一定程度上反映了当时我国统计学科研的热点和前沿,代表着我国统计教育的先进水平。本文通过对1987-2009年509篇统计学博士学位论文的选题及其研究内容进行统计,分析其变动规律和特点,总结选题的得失与启示,为今后科学选题以及进一步深入开展统计学术研究提供参考依据。     

Influence of behavioural tactics on recruitment and reproductive trajectory in the kittiwake

Many studies have provided evidence that, in birds, inexperienced breeders have a lower probability of breeding successfully. This is often explained by lack of skills and knowledge, and sometimes late laying dates in the first breeding attempt. There is growing evidence that in many species with deferred reproduction, some prebreeders attend breeding places, acquire territories and form pairs. Several behavioural tactics assumed to be associated with territory acquisition have been described in different species. These tactics may influence the probability of recruiting in the breeding segment of the population, age of first breeding, and reproductive success in the first breeding attempt. Here we addressed the influence of behaviour ('squatting') during the prebreeding period on demographic parameters (survival and recruitment probability) in a long-lived colonial seabird species: the kittiwake. We also investigated the influence of behaviour on reproductive trajectory. Squatters have a higher survival and recruitment probability, and a higher probability of breeding successfully in the first breeding attempt in all age-classes where this category is represented. The influence of behaviour is mainly expressed in the first reproduction. However, there is a relationship between breeding success in the first occasion and subsequent occasions. The influence of breeding success in the first breeding attempt on the rest of the trajectory may indirectly reflect the influence of behaviour on breeding success in the first occasion. The shape of the reproductive trajectory is influenced by behaviour and age of first breeding. There is substantial individual variation from the mean reproductive trajectory, which is accounted for by heterogeneity in performance among individuals in the first attempt, but there is no evidence of individual heterogeneity in the rate of change over time in performance in subsequent breeding occasions     

Influence of behavioural tactics on recruitment and reproductive trajectory in the kittiwake

Many studies have provided evidence that, in birds, inexperienced breeders have a lower probability of breeding successfully. This is often explained by lack of skills and knowledge, and sometimes late laying dates in the first breeding attempt. There is growing evidence that in many species with deferred reproduction, some prebreeders attend breeding places, acquire territories and form pairs. Several behavioural tactics assumed to be associated with territory acquisition have been described in different species. These tactics may influence the probability of recruiting in the breeding segment of the population, age of first breeding, and reproductive success in the first breeding attempt. Here we addressed the influence of behaviour ('squatting') during the prebreeding period on demographic parameters (survival and recruitment probability) in a long-lived colonial seabird species: the kittiwake. We also investigated the influence of behaviour on reproductive trajectory. Squatters have a higher survival and recruitment probability, and a higher probability of breeding successfully in the first breeding attempt in all age-classes where this category is represented. The influence of behaviour is mainly expressed in the first reproduction. However, there is a relationship between breeding success in the first occasion and subsequent occasions. The influence of breeding success in the first breeding attempt on the rest of the trajectory may indirectly reflect the influence of behaviour on breeding success in the first occasion. The shape of the reproductive trajectory is influenced by behaviour and age of first breeding. There is substantial individual variation from the mean reproductive trajectory, which is accounted for by heterogeneity in performance among individuals in the first attempt, but there is no evidence of individual heterogeneity in the rate of change over time in performance in subsequent breeding occasions     

Nineteenth and early twentieth century statistics: Some New Zealand connections

William Stanley Jevons published his statistical analysis of the climate of Australia and New Zealand, in 1858. Florence Nightingale advised Sir George Grey to collect statistics on M a ori health. Frederick William Frankland published a significant study of mortality in New Zealand, in 1882; and in 1890 George Hogben pioneered the application of statistics to seismology. These people all contributed to statistical knowledge in New Zealand, but were not New Zealanders. Earnest Rutherford, Leslie John Comrie and Alexander Craig Aitken were born and educated in New Zealand, but they worked mainly in the UK. In 1911 Rutherford made very effective use of statistics in discovering the nuclear structure of atoms; in 1937 Comrie pioneered the use of punched-card machinery for large-scale statistical analysis; and Aitken did very important work in mathematical statistics.     

Fertility in Poland during the 1980s: analysis of a maternity questionnaire

Recent fertility trends in Poland are analyzed using data from a mail survey conducted in 1984. The demographic, social, and economic characteristics of women who gave birth in 1984, their husbands, and their parents are examined. The results show an increase in fertility in the early 1980s, particularly in urban areas.     

Publication Delay in Iranian Scholarly Journals

Scholarly periodicals in Iran are considered main information resources in the development of knowledge in scholarly areas. About 566 periodicals have publication licenses from the Commission of Scholarly Periodicals Evaluation of Ministry of Science, Research & Technology (MSRT), with sixty-eight published in English. This paper studies the publication delay of twenty-six Iranian scholarly periodicals which are published in Persian in Iran, not those Iranian journals which are published in English in Iran or out of the country. The peer review and scholarly publication processes in Iranian journals are quite lengthy and need improvement. There was no significant relationship between publication delay in Persian scholarly periodicals and their impact factor as presented by the Islamic World Science Citation Center (titled ISC). Finally, the authors offer some solutions for improving the publication system of Iranian scholarly journals and decreasing the publication interval of these journals.     

中国省际资本边际报酬估算

 资本边际报酬是决定投资和资本配置的重要因素。本文利用中国省际宏观数据,估算了1990-2006年中国各省的资本边际报酬。结果显示,我国各省、直辖市的资本边际报酬呈现出东部沿海地区较高,而中西部地区较低的状况。同时,部分较落后地区的资本边际报酬不断增加,甚至已经超过了大部分沿海省份,而沿海省份的资本边际报酬增长趋势不再明显,很多省份呈现持平甚至下降趋势。这一结果说明,我国固定资本投资极不平衡的现象与中国省际的资本边际报酬估算结果是一致的,但是根据资本边际报酬的变化趋势,该问题在今后或许可以得到缓解。     

收入增长、收入波动与城镇居民财产积累

本文根据1995年和2002年住户调查数据,讨论了居民收入增长、收入波动以及住户特征对于城镇居民财产积累的影响。本文发现在1995年的家庭财产持有行为中已经具有明显的预防性动机,收入波动对于家庭的财产积累行为具有重要影响,而2002年中这种效应则有所下降。城镇居民在这一期间持有财产数量的增长主要是由收入增长所解释。此外,预防性动机在整个财产分布中的变化趋势在两个年份中是相反的,1995年财产分布低分位点钟具有更强的预防性动机,而2002年则相反,预防性动机随着财产分布分位点的上升而增强。如果控制收入、收入波动以及生命周期等储蓄性因素,户主特征对于财产积累的解释作用非常有限。     

西南联大时期的许宝騄与戴世光

许宝騄、戴世光是我国近现代数理统计和社会经济统计领域的两面旗帜。他们二位在上世纪30年代分别留学英国和美国，获得统计学博士和硕士学位。抗日战争爆发后，分别在1940年、1938年回到昆明，任教西南联大。在极其困难的条件下，他们不仅在算学系、经济学系系统讲授数理统计和社会经济统计等课程，而且作出了有重大国际影响的研究成果。艰苦而乐观的生活趣事既反映了当时特殊的时代背景，更彰显出他们高尚的人格品德。     

Likelihood ratio-based distribution-free sequential change-point detection

Most existing control charts are for monitoring location or scale parameters, rather than any change in process distribution such as shift in shape. Goodness-of-fit (GOF) test can detect any change in distribution. This paper develops a new distribution-free control chart by integrating a powerful two-sample nonparametric likelihood ratio GOF test into the effective change-point model. Our proposed chart is easy in computation, convenient to use, and very efficient in detecting any change in process distribution, including shifts in location, scale, and shape. It is also robust in detecting various magnitudes of shifts and especially powerful in monitoring any distributional change involving a decrease in scale.     

中国城市民生发展的区域差异测度、来源分解与形成机理

本文基于熵值法构建城市民生发展指数,利用Dagum基尼系数和方差分解方法首次从空间和结构两个视角考察我国城市民生发展的差异大小及来源,并运用关系数据分析范式研究其形成机理。研究发现:我国城市民生发展水平持续向好,但2010年之后民生发展不均衡现象显著;民生发展总体差异主要来源于区域间差异,其中东部和中部区域间差异贡献最大,东部区域内差异贡献显著高于中部、西部地区;社会发展差异和生态建设差异是民生发展差异的主要结构来源;人民生活差异、科技创新差异对民生发展差异的影响均从东向西依次减弱,社会发展差异的作用则依次增强,生态建设差异的影响在中部地区最为突出,经济发展差异对东部地区的影响较弱;人民生活差异、科技创新差异上升是导致2010年之后民生发展差异扩大的主要原因。本研究丰富了城市民生评价体系的构建方案,为揭示我国城市民生发展差异状况、探索协同提升对策提供了重要借鉴经验。     

关于保险核算问题的思考

 近年来,我国保险业发展很快,但国民经济核算中有关保险核算的专门研究相对滞后。随着我国社会主义市场经济体系的逐步建立和完善,国民经济核算体系已逐渐完成了新旧更替,因此,加强保险核算研究显得更加重要和紧迫。本文主要研究商业保险（如财产保险、人寿保险）的产出核算、服务份额计算以及保险活动账户记录等问题。     

Reliability of indices of industrial production in developing countries:the case of Zambia, 1980–89

This paper describes problems met in the calculation of the new index of industrial production in Zambia. It discusses deficiencies of the old index and measures taken to remedy the situation. Comparison of the indices shows that the old index was very unreliable. The average error for most indices was as large, or larger, than their average year-to-year change. Thus it was almost impossible to distinguish real movements in the old index from error variations. Similar problems were found in other developing countries. It is likely that many indices currently in use in these countries are also unreliable.This paper describes problems met in the calculation of the new index of industrial production in Zambia. It discusses deficiencies of the old index and measures taken to remedy the situation. Comparison of the indices shows that the old index was very unreliable. The average error for most indices was as large, or larger, than their average year-to-year change. Thus it was almost impossible to distinguish real movements in the old index from error variations. Similar problems were found in other developing countries. It is likely that many indices currently in use in these countries are also unreliable.This paper describes problems met in the calculation of the new index of industrial production in Zambia. It discusses deficiencies of the old index and measures taken to remedy the situation. Comparison of the indices shows that the old index was very unreliable. The average error for most indices was as large, or larger, than their average year-to-year change. Thus it was almost impossible to distinguish real movements in the old index from error variations. Similar problems were found in other developing countries. It is likely that many indices currently in use in these countries are also unreliable.This paper describes problems met in the calculation of the new index of industrial production in Zambia. It discusses deficiencies of the old index and measures taken to remedy the situation. Comparison of the indices shows that the old index was very unreliable. The average error for most indices was as large, or larger, than their average year-to-year change. Thus it was almost impossible to distinguish real movements in the old index from error variations. Similar problems were found in other developing countries. It is likely that many indices currently in use in these countries are also unreliable.     

Bayesian ratemaking procedure of crop insurance contracts with skewed distribution

Over the years, crop insurance programs became the focus of agricultural policy in the USA, Spain, Mexico, and more recently in Brazil. Given the increasing interest in insurance, accurate calculation of the premium rate is of great importance. We address the crop-yield distribution issue and its implications in pricing an insurance contract considering the dynamic structure of the data and incorporating the spatial correlation in the Hierarchical Bayesian framework. Results show that empirical (insurers) rates are higher in low risk areas and lower in high risk areas. Such methodological improvement is primarily important in situations of limited data.     

Spatially varying dynamic coefficient models

In this work we present a flexible class of linear models to treat observations made in discrete time and continuous space, where the regression coefficients vary smoothly in time and space. This kind of model is particularly appealing in situations where the effect of one or more explanatory processes on the response present substantial heterogeneity in both dimensions. We describe how to perform inference for this class of models and also how to perform forecasting in time and interpolation in space, using simulation techniques. The performance of the algorithm to estimate the parameters of the model and to perform prediction in time is investigated with simulated data sets. The proposed methodology is used to model pollution levels in the Northeast of the United States.     

企业不同发展阶段治理机制和绩效的关系研究

通过对企业不同的成长阶段中股权结构、董事会结构、债务结构和内部人持股对企业绩效的影响进行理论分析,提出相关的理论假设,并在此基础上通过回归方程进行回归分析得出结论:二元制的董事会的领导权结构在成熟期企业内对企业的业绩产生了显著的影响,而在成长期企业中则不显著;独立董事对成长期和成熟期企业的业绩都有显著的有利的影响;股权制衡力在成长期企业中对企业业绩产生了显著的负影响,而在成熟期企业内并没对企业的绩效产生显著的影响;债务融资对成长期企业和成熟期企业的业绩都有显著的负影响;增加高管持股比例在成熟期企业中有利于增加企业的绩效,但是在成长期企业中则会对企业的业绩产生负面的影响;股权集中度的增加会对企业的绩效产生不利的影响,这种不利的影响在成长期企业中更为显著。     

Singularity and Autoregressive Disturbances in Linear Logit Models

The implications of including autoregressive disturbances in linear logit models of demand systems are explored. It is argued that the normality assumption of the error terms is more appropriate in the linear logit model than in a share equation model with additive disturbances (commonly found in the literature). Autoregressive disturbances and their implications for model estimation are discussed in that context. Both theoretical arguments and empirical evidence are presented in favor of the logit specification given the presence of serial correlation.     

A comparison of suicide patterns in Australia and Hong Kong

We analyse the patterns of 6564 suicides in Hong Kong and 23671 suicides in Australia for the period 1981–1993. Within the unifying framework of logistic regression we investigate how suicide rates vary with marital status and age and how these patterns vary over time and between the two cultures. The main significant differences between the two cultures are that rates are higher in Australia, rates for males are much higher than for females in Australia but only slightly higher in Hong Kong, in Hong Kong the oldest age group has the highest suicide rate unlike in Australia and the protective effects of marriage are larger in Australia.