一种点式幕墙拉索结构的受力分析

结合工程实例提出一种拉索结构布置方案；通过对载荷作用的分析，采用平面简化方法分析结构的内力，同时给出预应力数值的确定及施加途径；给出施工注意事项及设计实例。     

Testing independence of several groups of variables

The null distribution of Wilks' likelihood-ratio criterion for testing independence of several groups of variables in a multivariate normal population is derived. Percentage points are tabulated for various values of the sample sizeN and partitions of p, the number of variables. This paper extends Mathai and Katiya's (1979) “sphericity” results and tables.     

The null distribution of the likelihood ratio test for a mixture of two normals after a restricted box-cox transformation

Maclean et al. (1976) applied a specific Box-Cox transformation to test for mixtures of distributions against a single distribution. Their null hypothesis is that a sample of n observations is from a normal distribution with unknown mean and variance after a restricted Box-Cox transformation. The alternative is that the sample is from a mixture of two normal distributions, each with unknown mean and unknown, but equal, variance after another restricted Box-Cox transformation. We developed a computer program that calculated the maximum likelihood estimates (MLEs) and likelihood ratio test (LRT) statistic for the above. Our algorithm for the calculation of the MLEs of the unknown parameters used multiple starting points to protect against convergence to a local rather than global maximum. We then simulated the distribution of the LRT for samples drawn from a normal distribution and five Box-Cox transformations of a normal distribution. The null distribution appeared to be the same for the Box-Cox transformations studied and appeared to be distributed as a chi-square random variable for samples of 25 or more. The degrees of freedom parameter appeared to be a monotonically decreasing function of the sample size. The null distribution of this LRT appeared to converge to a chi-square distribution with 2.5 degrees of freedom. We estimated the critical values for the 0.10, 0.05, and 0.01 levels of significance.     

Effect of missing plots in some response surface designs

The effect of one or more missing observations for response surface designs arranged in blocks are examined in this paper. The resu lts as applied to a central composite design with orthogonal blocking, and an equirdial design with orthogonal blocking, are reported.     

Properties of estimators for the gamma distribution

Accurate moments of maximum likelihood and moment estimators for the scale and shape parameters of a two parameter gamma density are given, the former being tabulated over a segment of the parameter space. In addition, joint acceptance regions are given for a particular case. The three parameter model is also considered and comments made on second order asymptotics for the maximum likelihood estimators     

Simulation on probability points for testing of lognormal or weibull distribution with a small sample

Two extensive computer simulated tables of percentage points of the asymptotic test statistics for testing lognormal or Weibull population proposed by Pereira (1978) are discussed. Special attention is given to small sample cases. Some of the most commonly used 16 symmetrical probability points are reported. These points are 0.001, 0.005, 0.01. 002. 0.025. 0.05. 0.10.0.15, 0.85, 0.90, 0.95, 0.975, 0.98, 0.99, 0.995 and 0.999. These empirical Sumulated results can be used to test hypotheses for these two particular populations and are adequate when using a normal approximation.     

宋代蜀学转型的再探讨

宋代蜀学转型有三个大节点：两宋之际二程洛学传蜀,南宋前期南轩之学返蜀,南宋后期朱熹闽学传蜀;三大节点并非孤立的,且其发展变化,都同书院有密切关系。另外,文章还对以下几个问题进行了探讨：1.关于谯定与“涪陵学派”;2.“二江九先生”之名的由来;3.渊的学术活动;4.阳枋的学术活动;5.巴蜀学者之间的传承、交流与合作。     

中国古代文论“溯源”品质及其成因分析

中国古代文论在它的整个发展中，往往表现出溯源到原点的特性。这是其理论个性的表现，历史回转的学术视野、独具个性的理论溯源、当下性的批评实践。但其理论释义的反复性、术语互释的含混性及其复古倾向，使其存在创新乏力的缺陷。文章希望通过对这种现象的具体剖析，有助于形成当代文论面向未来的创新意识。     

关于算子谱的孤立点问题的讨论

给出了λ0∈C为σ（A）的孤立点的一个充要条件,并讨论了0为紧算子的谱的孤立点及其预解算子的极点问题．     

一类差分方程的回归点集

本文讨论了周期点的周期为2的方幂的一类差分方程的回归点的性质,定义这类差分方程的第i个分量仅依赖于前面i个独立变量