Local dependence estimation using semiparametric archimedean copulas

The authors define a new semiparametric Archimedean copula family which has a flexible dependence structure. The generator of the family is a local interpolation of existing generators. It has locally‐defined dependence parameters. The authors present a penalized constrained least‐squares method to estimate and smooth these parameters. They illustrate the flexibility of their dependence model in a bi‐variate survival example.     

汉代诸子论吏治与治吏

官吏是封建国家各项政策的具体执行者。因为政策执行情况的好与坏 ,直接关系着皇朝的长治久安 ,所以治吏便成为治国的很重要的一方面。汉代诸子通过对两汉各个时期吏治状况的论述 ,深刻揭露了官官相护、贪污奢侈、对劳动人民的中间盘剥等吏治腐败现实。在此基础上 ,他们又纷纷提出相应的治吏主张 ,如打击贪污腐败、加强法律监督、增加官吏俸禄等     

多元线性回归方程及其应用

通过建立多元线性回归的数学模型,利用最小二乘估计得到正规方程组并进行相关性检验,从而解决相关实际问题。     

Physiologically Based Liver Modeling and Risk Assessment

Because of the inherent complexity of biological systems, there is often a choice between a number of apparently equally applicable physiologically based models to describe uptake and metabolism processes in toxicology or risk assessment. These models may fit the particular data sets of interest equally well, but may give quite different parameter estimates or predictions under different (extrapolated) conditions. Such competing models can be discriminated by a number of methods, including potential refutation by means of strategic experiments, and their ability to suitably incorporate all relevant physiological processes. For illustration, three currently used models for steady-state hepatic elimination--the venous equilibration model, the parallel tube model, and the distributed sinusoidal perfusion model--are reviewed and compared with particular reference to their application in the area of risk assessment. The ability of each of the models to describe and incorporate such physiological processes as protein binding, precursor-metabolite relations and hepatic zones of elimination, capillary recruitment, capillary heterogeneity, and intrahepatic shunting is discussed. Differences between the models in hepatic parameter estimation, extrapolation to different conditions, and interspecies scaling are discussed, and criteria for choosing one model over the others are presented. In this case, the distributed model provides the most general framework for describing physiological processes taking place in the liver, and has so far not been experimentally refuted, as have the other two models. These simpler models may, however, provide useful bounds on parameter estimates and on extrapolations and risk assessments.     

中国古代管理中的四环均衡发展思想

政治是经济的集中体现 ,直接影响着经济的发展和吏治、教育的建设 ;经济的发展首先要有吏治的保证和教育的支持 ;教育为政治经济服务 ,为整个社会输送干部和人才 ;吏治是在政治的正确指向下 ,通过教育的培养 ,完成对社会各方面的管理特别是经济的管理的。四环是互相套合的 ,是要均衡发展的。     

清末地方行政体制改革

在清末的预备立宪改革中 ,地方行政体制也进行了相应的改革。通过这一改革 ,初步形成了行政与立法、行政与司法的分离 ;通过机构调整 ,使各级地方政府机构向分职化方向发展 ;通过地方自治的开展 ,将基层社会的管理纳入法制化的轨道 ,从而初步形成了基层社会管理的“民治”模式。尽管这一改革没有全部完成 ,尽管改革中出现了各种弊端和问题 ,但不可否认 ,改革从根本上改变了原有的地方行政模式     

黄石地方高校应定位于为地方经济和社会发展服务

黄石地方政府办高校已有二、三十年历史了 ,但适用人才匮乏始终困扰着黄石地方经济和社会发展 ,地方高校对此有不可推卸的责任。为了继续获得地方政府的支持 ,为了地方高校的持续发展 ,黄石地方高校应定位于为地方经济和社会发展服务。     

A Comparison of Partially Adaptive and Reweighted Least Squares Estimation

The small sample performance of least median of squares, reweighted least squares, least squares, least absolute deviations, and three partially adaptive estimators are compared using Monte Carlo simulations. Two data problems are addressed in the paper: (1) data generated from non-normal error distributions and (2) contaminated data. Breakdown plots are used to investigate the sensitivity of partially adaptive estimators to data contamination relative to RLS. One partially adaptive estimator performs especially well when the errors are skewed, while another partially adaptive estimator and RLS perform particularly well when the errors are extremely leptokur-totic. In comparison with RLS, partially adaptive estimators are only moderately effective in resisting data contamination; however, they outperform least squares and least absolute deviation estimators.     

一阶非线性中立型方程解的渐近性与振动性

本文研究一类具有交系数和多偏差的一阶非线性中立型微分方程解的渐近性与振动性     

新时期地方综合性大学提高教学质量的四个要素

中国入世以后 ,中国的高等教育由精英化教育阶段走向大众化教育阶段 ,这在教育领域内引发了一场新的、极为深刻的变革 ,对地方综合性大学来讲 ,将面临着生存与发展的竞争。地方综合性大学能否适应形势的需要 ,关键在于教学的质量能否为社会所公认 ,而影响教学质量的“重要因素”——教学观念、师资队伍、教材和教学过程能否适应形势的需要 ,是地方综合性大学要考虑的头等大事。