Estimating the association parameter for copula models under dependent censoring

Summary. Many biomedical studies involve the analysis of multiple events. The dependence between the times to these end points is often of scientific interest. We investigate a situation when one end point is subject to censoring by the other. The model assumptions of Day and co-workers and Fine and co-workers are extended to more general structures where the level of association may vary with time. Two types of estimating function are proposed. Asymptotic properties of the proposed estimators are derived. Their finite sample performance is studied via simulations. The inference procedures are applied to two real data sets for illustration.     

各向异性媒质填充圆波导中对称模的传播

从圆柱坐标系下各向异性媒质中的麦克斯韦方程出发,对对称模的去耦纵向场方程进行变换求解,推导出各向异性媒质填充的圆波导的对称模特征方程。借助于合流超几何函数的渐近展开公式,对对称模的传播常数进行了数值求解。     

高校学报资料室工作琐谈

文章从高校学报资料室的特点入手 ,就其在高校教学和科研中的作用提出了自己的看法。     

执政党功能的科学定位与执政方式的选择

随着执政党地位、环境和任务发生的重大变化,必须深入思考和探索执政党功能定位以及由此引起的执政方式改革的一些基本问题,以实现市场经济条件下执政党功能的准确定位,从而采取科学的执政方式。这是实现政党现代化、全面加强和改进党的建设的重要前提。     

关于二维小波函数的进一步探讨

对二维小被函数作了进一步分析，讨论了二维频率响应的计算，将二维尺度函数用乘积空间中勒让德正交多项式展开，得到了一些可喜结果。     

Reference priors for exponential families

Reference analysis, introduced by Bernardo (J. Roy. Statist. Soc. 41 (1979) 113) and further developed by Berger and Bernardo (On the development of reference priors (with discussion). In: J.M. Bernardo, J.O. Berger, A.P. Dawid, A.F.M. Smith (Eds.), Bayesian Statistics, Vol. 4, Clarendon Press, Oxford, pp. 35–60), has proved to be one of the most successful general methods to derive noninformative prior distributions. In practice, however, reference priors are typically difficult to obtain. In this paper we show how to find reference priors for a wide class of exponential family likelihoods.     

福柯与法兰克福学派审美功能观比较

法兰克福学派与福柯在审美功能问题上有一致性,即对异化现实的批判,都超越了阶级分析;都认为审美经验可以改变人的精神状况。其不同的是,前者致力于解放人的爱欲,后者主张个体自我塑造为主体;前者注重艺术相对于意识形态的异在性,后者则强调审美与伦理的相通;前者有一种乌托邦情结,后者则终结了任何乌托邦计划。     

论国家所有权的行使

国家所有权的行使应在坚持社会主义公有制、国有财产国家所有的宪法前提下,坚持原则性与灵活性相结合的原则、效用原则、区分原则,实行分级所有、分级管理、分级行使,充分调动中央和地方两个方面的积极性,采用划拨、出售、出让、租赁、承包、信托、股权投资、交换等方法,以确保国有财产的保值增值。     

神经网络—维布局算法

研究并提出了一种基于神经计算的集成电路一堆布局的并行优化算法。文中首先将布局问题的限制条件和目标函数映射为一个二次函数,并以该函数为能量函数构造相应的神经网络,然后利用神经网络的并行计算特性求出一堆布局问题的优化解。     

ASYMPTOTIC EXPANSIONS APPLIED TO F-TEST CRITERIA

Using asymptotic expansions of the Kummer hypergeometric function, the sequential. F-test criterion is evaluated asymptotically in terms of the sample size. The continuation region inequalities for the test are inverted and expressed in terms of known test criteria. A rapidly converging algorithm for carrying out the sequential procedure is provided. This makes the F-test easier for the practitioner to use. Almost sure finite termination of the sequential. F-test is asserted by appealing to the continuation inequalities and a heuristic asymptotic expansion of the test criterion. Average stopping times of the sequential procedure for a variety of population means and population number configurations are tabulated. The computer symbolic manipulation program MAPLE was used to derive some formulae.