以民为本:中国共产党从革命到执政的实践基础

中国共产党的三代领导集体 ,经历了革命、执政、改革开放和社会主义市场经济的社会实践 ,在不同历史时期 ,牢记为人民服务的宗旨 ,赢得了人民的支持 ,也向人民交出了无愧于时代的出色答卷。新的世纪 ,我党仍面临严峻考验。但中外历史经验证明 ,只要以民为本 ,服务人民 ,就能使社会主义祖国走向繁荣、富强     

中国资本“走出去”的困境与出路

伴随着中国对外直接投资的规模和速度不断增长,涌现出一大批有一定实力的企业向海外扩张,“走出去”已经成为企业进一步提升竞争力的必由之路.然而,随之而来的诸多问题又导致了中国资本在“走出去”的过程中陷入困境.文章从发展研究的视角,基于坦桑尼亚某中资国有企业的田野调查,提出了海外国有企业在运营中面临的两大困境：一是经济效益与国家利益冲突的困境;二是解决劳资纠纷时,“找法院”与“找政府”的选择困境.并深入分析造成两大困境的主要原因,最后尝试提出一些解决对策,为企业和政府提供参考依据.     

人道主义和反人道主义的知识论或真理观——以詹姆士与福柯为例

以詹姆士为代表的人道主义知识论或真理观认为,真理是人为的结果,并且造出来是给人用的;以福柯为代表的反人道主义的知识论或真理观认为,每一个话语实践都可以由它所形成的知识来确定,而话语实践总是和权力联系在一起。因此,知识或真理是由权力造就的。在这两种知识论或真理观中,福柯的知识论或真理观显得更为合理。实际上,知识或真理是在人的实践中产生的,并由人的实践效果来衡量,这就决定了知识或真理的社会基础和社会属性。     

日元对美元汇率的变化及其原因分析

自实行浮动汇率制到20世纪90年代上半期,日元持续升值,成为主要的世界货币之一。决定这一长期走势的基本原因是日元对美元购买力平价的提高。而经济实力的消长则是购买力平价提高的物质基础。20世纪90年代以来,日元对美元的购买力平价趋于稳定,从而结束了日元长期升值的趋势。在上述过程中,国家的宏观经济政策、国际间利率差别、跨国资本流动以及一些突发事件的影响成为汇率在短期内波动的直接原因。     

冷战后国际关系与美国外交政策

冷战结束以后国际政治发生的巨大变化是由苏联解体和国际权力结构的失衡所造成的。在失去了苏联的制衡之后,美国的行为越来越表现出肆意妄为和粗暴蛮横的特征。美国用先发制人战略取代威慑和遏制战略是错误的,布什政府的单边主义政策只能使美国在世界上越来越孤立。国际均势的恢复是一个漫长的过程,但是,国际体系的均势最终将会实现。     

Comparison of permutation methods for the partial correlation and partial mantel tests

This study compares empirical type I error and power of different permutation techniques that can be used for partial correlation analysis involving three data vectors and for partial Mantel tests. The partial Mantel test is a form of first-order partial correlation analysis involving three distance matrices which is widely used in such fields as population genetics, ecology, anthropology, psychometry and sociology. The methods compared are the following: (1) permute the objects in one of the vectors (or matrices); (2) permute the residuals of a null model; (3) correlate residualized vector 1 (or matrix A) to residualized vector 2 (or matrix B); permute one of the residualized vectors (or matrices); (4) permute the residuals of a full model. In the partial correlation study, the results were compared to those of the parametric t-test which provides a reference under normality. Simulations were carried out to measure the type I error and power of these permutatio methods, using normal and non-normal data, without and with an outlier. There were 10 000 simulations for each situation (100 000 when n = 5); 999 permutations were produced per test where permutations were used. The recommended testing procedures are the following:(a) In partial correlation analysis, most methods can be used most of the time. The parametric t-test should not be used with highly skewed data. Permutation of the raw data should be avoided only when highly skewed data are combined with outliers in the covariable. Methods implying permutation of residuals, which are known to only have asymptotically exact significance levels, should not be used when highly skewed data are combined with small sample size. (b) In partial Mantel tests, method 2 can always be used, except when highly skewed data are combined with small sample size. (c) With small sample sizes, one should carefully examine the data before partial correlation or partial Mantel analysis. For highly skewed data, permutation of the raw data has correct type I error in the absence of outliers. When highly skewed data are combined with outliers in the covariable vector or matrix, it is still recommended to use the permutation of raw data. (d) Method 3 should never be used.     

Resource characteristics in social exchange networks: Implications for positional advantage

Despite the wide range of resources that traverse social networks, social exchange research has focused on only a narrow subset. Notably, prior social exchange research has not considered resources like information that have the capacity to diffuse through networks. The current study investigates how differences between the standard social exchange resource and an information-type resource affect the advantage provided by one's network position. Results of a laboratory experiment support predictions and offer two new insights to the foundations of positional advantage: (1) the location of advantageous positions in a network differs by resource characteristics, and (2) only in particular situations is a single position able to experience high levels of both power and exchange frequency.     

Third-Order Asymptotic Distributions of Classic Test Statistics for One-Parameter Exponential Family Models

ABSTRACT

In this article we derive third-order asymptotic expansions for the non null distribution functions of four classic statistics under a sequence of local alternatives in one-parameter exponential family models. Our results are quite general and cover a wide range of important distributions.     

Calculating the power or sample size for the logistic and proportional hazards models

An algorithm is presented for calculating the power for the logistic and proportional hazards models in which some of the covariates are discrete and the remainders are multivariate normal. The mean and covariance matrix of the multivariate normal covariates may depend on the discrete covariates.

The algorithm, which finds the power of the Wald test, uses the result that the information matrix can be calculated using univariate numerical integration even when there are several continuous covariates. The algorithm is checked using simulation and in certain situations gives more accurate results than current methods which are based on simple formulae. The algorithm is used to explore properties of these models, in particular, the power gain from a prognostic covariate in the analysis of a clinical trial or observational study. The methods can be extended to determine power for other generalized linear models.     

杜文秀大理农民革命政权的历史贡献

杜文秀长期得不到公正评价的一个重要原因,即学界对其政权建立和建树缺乏了解。本文从九个方面,阐述了杜文秀起义原因和在政治、文化、民族团结及农工商各业取得的骄人成绩,以帮助读者加深对这一农民革命政权的了解。