Generalized Youden designs: construction and tables

Generalized Youden Designs are generalizations of the class of two-way balanced block designs which include Latin squares and Youden squares. They are used for the same purposes and in the same way that these classical designs are used, and satisfy most of the common criteria of design optimality.We explicitly display or give detailed instructions for constructing all these designs within a practical range: when υ, the number of treatments, is ?25; and b₁ and b₂, the dimensions of the design array, are each ?50.     

小学生学习适应问题的整合性教育干预模式研究

学习适应问题是小学生常见的学习心理问题,也是直接影响小学教育质量的老大难问题.针对小学生学习适应问题的现状,整合性教育干预模式主张,通过专题辅导、个别咨询辅导和家庭间接辅导等途径,精选科学高效的教育干预策略,为学生提供有关学习态度、学习方法、学习环境和身心健康等方面的学习适应性辅导,达到提高学生的学习适应性和学习成绩的双重目标.     

Projective (2n,n,λ,1)-designs

A projective (2n,n,λ,1)-design is a set $\text{D}$ of n element subsets (called blocks) of a 2n-element set V having the properties that each element of V is a member of λ blocks and every two blocks have a non-empty intersection. This paper establishes existence and non-existence results for various projective (2n,n,λ,1)-designs and their subdesigns.     

坚持哲学社会科学与自然科学并举并重推进“重要职责”与"第一要务”全面落实

作为人类历史发展最终决定力量的生产力,本身就是自然力与社会力的有机统一.它所客观固有的这一内在本质,既决定了解放、发展社会生产力,尤其是推动先进生产力,必须实行哲学社会科学技术与自然科学技术的并举、并重,又决定了培育、提高先进主体生产力,必须实行哲学社会科学素质和才能与自然科学素质和才能的并举、并重.只有同时坚持这两个并举、并重,我们党代表中国先进生产力发展要求必须始终履行的“重要职责”和"第一要务”,才能得到全面落实.     

Semiparametric inference of proportional odds model based on randomly truncated data

This paper studies the estimation in the proportional odds model based on randomly truncated data. The proposed estimators for the regression coefficients include a class of minimum distance estimators defined through weighted empirical odds function. We have investigated the asymptotic properties like the consistency and the limiting distribution of the proposed estimators under mild conditions. The finite sample properties were investigated through simulation study making comparison of some of the estimators in the class. We conclude with an illustration of our proposed method to a well-known AIDS data.     

试论小学教育在人生教育中的作用

本文提出，小学阶段的启蒙教育,对人才的培养具有特别重要的意义，应特别注意小学教师素质的培养。     

对高师本科小学教育专业（英文方向）教学法课程改革的思考

本文针对高师本科小学教育专业英语方向的教学法课程在实际教学过程中存在的不足，提出了改进的建议：丰富知识内容，增加《英语课程标准》、课堂教学用语、英文书写及一线教学现状的内容；加强技能训练，从加强教学基本功训练和加强课堂教学模拟训练两方面人手；培养科研能力，通过分析教学案例、开展专题研讨和撰写小型论文的方式进行培养。     

Comparing relative importance of the same component in a series system in two environments

The relative performance of a component of a series system in two different environments is considered. The conditional probability of the failure of the system due to the failure of the specified component given that the system failed before time t is regarded as a measure of relative importance of the component to the system. A U-statistic test for checking the equality of the relative importance of the component to the system in two different environments against the alternative that the relative importance is smaller in one of the environments, is proposed. Some simulation results for estimating the power of the test are reported. The proposed test is applied to one real data set and it is seen that a different aspect of the data is brought out by this comparison than that by the comparisons of the absolute importance functions such as the subsurvival functions, considered in earlier studies.     

A study of BIB designs through support matrices

This paper deals with the existence and nonexistence of BIB designs with repeated blocks. The approach is an algebraic one. The concept of a support matrix is introduced and some of its basic properties are noted. Some basic examples of support matrices are given when the block size is 3. The connection between full column rank proper support matrices and irreducible designs is explored and some examples of such matrices are given.     

Some new factor screening designs using the search linear model

Factor screening designs for searching two and three effective factors using the search linear model are discussed. The construction of such factor screening designs involved finding a fraction with small number of treatments of a 2^m factorial experiment having the property P_2t (no 2t columns are linearly dependent) for t=2 and 3. A ‘Packing Problem’ is introduced in this connection. A complete solution of the problem in one case and partial solutions for the other cases are presented. Many practically useful new designs are listed.