医学期刊三线表设计中常见问题例释

三线表在科技期刊中得到普遍应用,主要就医学期刊三线表设计中存在的几个常见问题举例、分析和修正,旨在提高三线表表格设计的科学性,使表格具有可读性和准确性,从而进一步提高期刊质量。     

从餐桌文化看中西文化的面子观差异

餐桌文化在当今社会人们的跨文化交际活动中扮演着越来越重要的角色,中西方文化的面子观差异从餐桌文化中可以管窥一侧。中西餐桌文化从餐桌氛围、劝酒文化、点菜习惯及餐桌话语都体现出中西文化的面子观差异。虽然中西餐桌文化在人际交往中都注意到了面子,但由于历史条件、文化基础和思维方式的不同,两种餐桌文化表现出不同的面子观文化。中国人在餐桌交际时往往采用积极的面子策略,体现了以群体取向为主的中国文化的价值观,西方人在餐桌交际时侧重采用消极面子策略,体现了以个体意识为核心的面子特征。面子文化只有差异,没有对错与优劣之分。为了确保跨文化交际的顺利进行,我们要尊重并包容面子文化差异。     

Outlier detection in contingency tables using decomposable graphical models

For high-dimensional data, it is a tedious task to determine anomalies such as outliers. We present a novel outlier detection method for high-dimensional contingency tables. We use the class of decomposable graphical models to model the relationship among the variables of interest, which can be depicted by an undirected graph called the interaction graph. Given an interaction graph, we derive a closed-form expression of the likelihood ratio test (LRT) statistic and an exact distribution for efficient simulation of the test statistic. An observation is declared an outlier if it deviates significantly from the approximated distribution of the test statistic under the null hypothesis. We demonstrate the use of the LRT outlier detection framework on genetic data modeled by Chow–Liu trees.     

Stable growth in native‐dependent multistate population dynamics

Users of multistate life tables and projections have recognized that the Markovian assumptions underlying such models are unduly restrictive and should be relaxed whenever data permit. Efforts to include the influences of previous occupancies have included the incorporation of place‐of‐birth dependence. This paper addresses the stable growth properties of such generalized multistate models. It shows how place‐of‐birth‐specific stable growth measures can be calculated without projection simply by solving the characteristic equation. An example using Canadian data illustrates the argument.     

The multistate life table with duration‐dependence

A method for generalizing the multistate, or increment‐decrement, life table to include rates which depend upon duration of exposure to risk, as well as upon age, is proposed. The method is built upon the linear approximation, called the linear integration hypothesis, developed mainly by Rogers and his colleagues. Although the use of rates indexed by duration categories leads to a substantial increase in the state space of the model, it is possible to arrange the rates in such a way that matrices to be inverted are no larger than those encountered in the usual multistate life table. In the more general approach it is possible to derive several new summary indices of the life‐table cohort's history, such as the mean and median time in current status, at any age. The method is illustrated using a simple four‐state marital‐status model which has appeared often in the literature; here, rates of divorce and widowhood vary by duration of marriage as well as age.     

On the estimation of multidimensional demographic models with population registration data

In this paper the estimation of multidimensional demographic models is investigated in situations where population registration data are available. With this kind of aggregate data, estimation by traditional methods is not possible. We look at two versions of the multidimensional model: the constant intensities model and the linear integration model. Some logical inconsistencies in the derivation of the latter are discussed. In particular, we argue that the linear integration model is not compatible with a Markov process. A new algorithm for the estimation of the constant intensities model with population registration data is proposed. Some preliminary results on the mathematical and statistical properties of this method are given. The algorithm is applied to Dutch nuptiality data.     

学生公用机房硬盘管理方法

通过分析操作系统对硬盘的管理特点 ,找到了一种安全有效的机房硬盘管理方法     

图表作文的审题方法及写作技巧

图表作文就是把图表上的数据用文字表达出来。这类作文一般可分三步来写：首先，用典型数据概述图表的主要内容；第二，对数据进行仔细分析比较，归纳出增减比率，找出变化原因；最后写看图表后的想法和评论，并得出自己的结论。     

Foxpro中几个重要环境参数的设置与使用

较为详细地介绍Foxpro中几个重要的环境参数的设置格式与使用方法     

肇庆学院俱乐部式乒乓球专项选修课改革实践

根据目前高等教育体育教学改革需要，结合肇庆学院体育与健康学院的实际情况，在乒乓球专项选修课教学中探讨了体育俱乐部式的教学模式，总结出“以生为本”和“个性发展”相结合、教师主导性和学生主体性学习相结合、评价体系和学习目标相结合等教学方法，并取得了较好的成效：激发了学生对乒乓球专项课的兴趣；全面提高了学生身体素质、专项技术能力和乒乓球教学能力；提高了学生的社会适应能力；使学生养成了终身学习与终身体育的观念；促进了教师自身专业能力的不断提高．