一种疏水缔合聚合物快速溶解方法研究

研究了疏水缔合聚合物（AP–P4）经过拉伸装置后的溶解时间。结果表明，拉伸装置可以缩短疏水缔合聚合物的溶解时间；拉伸装置的最佳间距为200 μm，此时疏水缔合聚合物的溶解时间为25 min。经拉伸装置处理后的疏水缔合聚合物可以在30 min 内达到溶解；提高温度可以显著改善疏水缔合聚合物的溶解效果，缩短疏水缔合聚合物的溶解时间。     

Estimation and simulation of conditional hazard function in the quasi-associated framework when the observations are linked via a functional single-index structure

We consider the estimation of the conditional hazard function of a scalar response variable Y given a Hilbertian random variable X when the observations are linked via a single-index structure in the quasi-associated framework. We establish the pointwise almost complete convergence and the uniform almost complete convergence (with the rate) of the estimate of this model. A simulation is given to illustrate the good behavior in the practice of our methodology.     

高校学生社团在弘扬民族文化中的作用

民族文化对民族的延续和国家的存亡,无论在任何时候都具有特别重要的意义,在培育民族优秀精神品格方面也起着其他方式难以替代的重要作用。在高校,大学生社团作为文化传播的主体,具备弘扬民族文化不可估量的优势。充分发挥学校领导的作用、建立健全民族文化类社团的良性机制、发挥社团成员聪明才智、激发大学生对民族文化的兴趣、注重打造精品民族文化类社团,致力于弘扬民族文化途径的探索,在大学生群体中开展民族文化活动,对民族文化的传承和发展都具有重大的促进作用。     

Construction of incomplete Sudoku square and partially balanced incomplete block designs

Abstract

The present article deals with the study of association among the elements of a Sudoku square. In this direction, we have defined an association scheme and constructed incomplete Sudoku square designs which are capable of studying four explanatory variables and also happen to be the designs for two-way elimination of heterogeneity. Some series of Partially Balanced Incomplete Block (PBIB) designs have also been obtained.     

组织特点、外部约束与行业协会能力

构建行业协会制度能力和服务能力测度指标,实证研究表明:协会组织特点、外部约束对于制度能力以及制度能力对于服务能力具有影响。组织特点中,协会兼职或离退休官员的存在不利于协会制度能力提高,尤其是离退休官员。收入虽然对制度能力没影响,但显著影响了服务能力。外部约束中,行业竞争不利于协会制度能力,也没有影响服务能力,反而容易诱发协会寻租活动。协会间竞争对于制度能力、服务能力都没有影响,但对寻租活动抑制效果显著。政策只对协会促进会员遵守规则的制度能力具有正向作用,对协会服务能力提升没有产生效果,仅减少了协会寻租可能。制度能力对于协会总体服务能力和正向服务能力都具有积极作用,而对于负向能力没有影响。     

Some maximum-indifference estimators for the slope of a univariate linear model

As known, the least-squares estimator of the slope of a univariate linear model sets to zero the covariance between the regression residuals and the values of the explanatory variable. To prevent the estimation process from being influenced by outliers, which can be theoretically modelled by a heavy-tailed distribution for the error term, one can substitute covariance with some robust measures of association, for example Kendall's tau in the popular Theil–Sen estimator. In a scarcely known Italian paper, Cifarelli [(1978), ‘La Stima del Coefficiente di Regressione Mediante l'Indice di Cograduazione di Gini’, Rivista di matematica per le scienze economiche e sociali, 1, 7–38. A translation into English is available at http://arxiv.org/abs/1411.4809 and will appear in Decisions in Economics and Finance] shows that a gain of efficiency can be obtained by using Gini's cograduation index instead of Kendall's tau. This paper introduces a new estimator, derived from another association measure recently proposed. Such a measure is strongly related to Gini's cograduation index, as they are both built to vanish in the general framework of indifference. The newly proposed estimator is shown to be unbiased and asymptotically normally distributed. Moreover, all considered estimators are compared via their asymptotic relative efficiency and a small simulation study. Finally, some indications about the performance of the considered estimators in the presence of contaminated normal data are provided.     

行业协会对行政权力制约的缺乏及对策

任何公权力都需要监督和制约,行政权力尤为如此.行业协会不同于一般的社会组织,它的出现是对传统国家管理的修正,是社会发展的必然,是对行政权力进行制约的有效武器.但是,我国行业协会的发展却不尽如人意.文章从我国行业协会的历史和现状两方面分析了我国目前行业协会对行政权力缺乏制约的原因,并提出了相关解决的对策.     

浅析袁隆平的科研方法

袁隆平是当代杰出的农业科学家,被国际同行誉为"杂交水稻之父".他在水稻杂交优势利用的开创和发展方面成就卓越.从科学方法而言,袁隆平院士在科研中成功运用了信息联想、辨证分析、试验探索、灵感思维等方法.     

招贴设计的方法论研究

招贴设计的方法论研究是平面设计基础理论的一个重要支系,由于招贴设计自身的复杂性,与之对应的方法论研究不应等同于一般的设计方法论.文章突破了旧有的研究体系,尝试从哲学、图像学、潜意识等多个角度去剖析创意生成的奥秘,进而引导初学者完成创意的构思.     

高校学生社团组织宣传工作创新探析

高校学生社团组织宣传工作是开展学生思想政治教育工作的重要渠道,也是强化校园主流文化引领性的重要手段。当前高校学生社团宣传工作必须结合新媒体时代发展的趋势,探索社团宣传工作的规律和途径,创新发展高校社团宣传内容与阵地,突破传统宣传格局、完善宣传工作机制方法,实现高校社团宣传工作新旧模式的战略整合。