混合酸碱溶液酸碱度的计算

本文对混合酸碱溶液的酸碱度计算作一探讨。     

《切韵》系韵书歌戈韵分合性质研究--歌戈韵在韵书中的反切比较

我们用几种韵书比较切下字系统 ,发现有许多字原本属于开口韵歌、哿的字在《集韵》里分别收在合口韵戈、果韵中 ,但切下字却仍用开口字。开合混置的韵字特别多 ,不仅有开口韵放入合口韵 ,而且也有合口韵放入开口韵 ,但切下字系统不变     

唱好高音的几个重要因素

基于专业教学经验的总结，对唱好高音的问题提出了自己的看法，认为唱好高音必须运用采取的方法是：真正打开喉龙；正确运用气息；声音“走向”正确无误；科学运用混合共鸣等。     

Building a just world: the effects of service-learning on social justice beliefs of Chinese college students

This study aimed to examine the effects of different service experiences on the social justice beliefs of 60 Chinese college students with mixed methods. The quantitative results indicated that the participants in two service groups (i.e. for at-risk adolescents and adolescents with cerebral palsy) demonstrated a more significant promotion of social justice beliefs than their peers in non-service group. A qualitative analysis provided evidence of the mechanism underlying service-learning, as well as different service experiences affecting on students’ social justice beliefs. Finally, the implications for implementing service-learning and realizing social justice goals in China were discussed.     

纵向数据线性混合模型中M估计的渐近正态性

对纵向数据的线性混合模型yk=Xkβ＋Ckτk＋ek用Fisher得分迭代法得到了参数的M估计（稳健估计）,并在一系列的正则条件下,证明了参数M估计的渐近性质．     

Mondrian as kitchen tiles? Artistic and cultural conceptions of art museum visitors in Belgium

This article investigates the ways in which art museums' visitors define their relationships to art and culture, and how this affects their perceptions of art museums. Existing approaches have traditionally attempted to define the meaning of art museums on the basis of the socio-economic composition of museum audiences. Using mixed methods analysis, with a particular stress on qualitative data about the audiences of the six main museums of modern and contemporary art in Belgium, I argue for the need for a more complex and comprehensive framework to understand visitors' perceptions. I show that people characterized by similar cultural tastes and practices use similar strategies to interpret their relationship to culture, art and museums (the same principles of classification, legitimation and justification). On this basis, I argue that those with a similar cultural profile belong to the same “interpretive community” (Fish, 1980; Hooper-Greenhill, 2000).     

房产税改革的方案选择及财税效应分析

对房产持有环节开征房产税具有国际通用的合理性和合法性,房产税改革是新一轮国家财税体制改革的重要内容。对国内主要城市的房产税改革方案及其财税效应分析表明：采用无差别税率征税方案的优势在于减少征管成本、确保居民纳税义务的公平性,劣势在于造成纳税人税负过重、不利于调节财富分配差距;而按住房面积采用递进税率征税方案的优势在于能够调节贫富差距、体现“量能负担”原则,劣势在于容易被纳税人投机取巧而逃避高税率和监管。权衡利弊,“每人享受一定面积的减免,根据住房面积大小、基于公告价值或评估价值按不同税率征收”的方案,可作为今后房产税改革的主要方向。     

Digital Module 16: Longitudinal Data Analysis

In this digital ITEMS module, Dr. Jeffrey Harring and Ms. Tessa Johnson introduce the linear mixed effects (LME) model as a flexible general framework for simultaneously modeling continuous repeated measures data with a scientifically defensible function that adequately summarizes both individual change as well as the average response. The module begins with a nontechnical overview of longitudinal data analyses drawing distinctions with cross-sectional analyses in terms of research questions to be addressed. Nuances of longitudinal designs, timing of measurements, and the real possibility of missing data are then discussed. The three interconnected components of the LME model—(1) a model for individual and mean response profiles, (2) a model to characterize the covariation among the time-specific residuals, and (3) a set of models that summarize the extent that individual coefficients vary—are discussed in the context of the set of activities comprising an analysis. Finally, they demonstrate how to estimate the linear mixed effects model within an open-source environment (R). The digital module contains sample R code, diagnostic quiz questions, hands-on activities in R, curated resources, and a glossary.     

基于混合策略博弈的我国优秀运动员流动影响因素分析

建立以优秀运动员、运动员现所属组织和流动目的组织为博弈主体的混合策略博弈模型,并对其策略选择进行分析。依据纳什均衡解得出注册优先权是影响运动员流动的核心要素,运动员现所属组织使用注册优先权与否,很大程度上决定了运动员流动或者流动的流畅性;转会费、制度成本和契约成本也是影响运动员流动的因素;运动员流动的概率与注册优先权成负相关的关系;组织间利益的负关联妨碍了我国优秀运动员流动各利益方合作共赢的意愿和行为。提出逐步限制注册优先权、完善转会费制度、增加训练补偿金等建议。     

Home advantage in speed skating: Evidence from individual data

Home advantage is a well-documented phenomenon in many sports. Home advantage has been shown to exist for team sports (soccer, hockey, football, baseball, basketball) and for countries organizing sports tournaments like the Olympics and World Cup Soccer. There is also some evidence for home advantage in some individual sports, but there is a much more limited literature. This paper addresses the issue of home advantage in speed skating. From a methodological point of view, it is difficult to identify home advantage, because skaters vary in their abilities and the conditions of tournaments vary. There is a small but significant home advantage using a generalized linear mixed model, with random effects for skaters and fixed effects for skating rinks and seasons. Even though the home advantage effect exists, it is very small when compared to variation in skating times due to differences of rinks and individual abilities.