美国和加拿大的多元文化主义政策及语言策略比较

美国和加拿大两国都是移民国家,多元文化主义政策都在两国得到了很好的贯彻实施.但由于两国不同的政治、经济和社会文化背景,两国的多元文化主义呈现出一定的差异性,由此导致两国实施了不同的语言政策.加拿大实施沉浸式双语教育,而美国则实施淹没式双语教育.     

老年人健身器械的民族化设计研究

当今社会,人口老龄化已成为全球共同关注的社会问题,中国也在逐渐步入老龄化社会行列。老年人健身器材的设计研究日臻完善,然而现有设计西式化严重,漠视本民族的优秀传统,缺乏文化底蕴和创新精神,因此本文以老年人健身器材为研究对象,在剖析老年人健身器材设计民族化意义的基础上,探讨其民族化设计的过程,并结合中华太极文化设计提出一款老年人健身器材,希望对解决老年人健身器材的民族化设计问题有一定的推动作用。     

Some equalities for estimations of partial coefficients under a general linear regression model

Estimations of partial coefficients in a general regression models involve some complicated operations of matrices and their generalized inverses. In this note, we use the matrix rank method to derive necessary and sufficient conditions for the ordinary least-squares estimator and the best linear unbiased estimator of partial coefficients in a general linear regression model to equal.     

Estimation and Inference Based on Neumann Series Approximation to Locally Efficient Score in Missing Data Problems

Abstract.  Theory on semi-parametric efficient estimation in missing data problems has been systematically developed by Robins and his coauthors. Except in relatively simple problems, semi-parametric efficient scores cannot be expressed in closed forms. Instead, the efficient scores are often expressed as solutions to integral equations. Neumann series was proposed in the form of successive approximation to the efficient scores in those situations. Statistical properties of the estimator based on the Neumann series approximation are difficult to obtain and as a result, have not been clearly studied. In this paper, we reformulate the successive approximation in a simple iterative form and study the statistical properties of the estimator based on the reformulation. We show that a doubly robust locally efficient estimator can be obtained following the algorithm in robustifying the likelihood score. The results can be applied to, among others, parametric regression, marginal regression and Cox regression when data are subject to missing values and the data are missing at random. A simulation study is conducted to evaluate the performance of the approach and a real data example is analysed to demonstrate the use of the approach.     

爱，不可以无所顾忌

The generation gap that exists between people who were born in the 1950s and those who were born in the 1980s has been a cause for concern since the Parents Are Scourges appeared on the Internet. Generation gaps are normal, as older people tend to recall days that have passed and make judgments based on their experiences while younger people, who are full of hope and who tend to look to the future. They love to put their judgments to the test.     

我国法律类人才培养模式的现状及改革

对法律人才培养模式的涵义进行了界定，指出了目前我国的法律人才培养模式在教育体制、教学内容及方法、师资力量及培养效果等方面存在的问题，对当前的法律人才培养模式提出了改革的建议。     

公共服务均等化:现代政府不可推卸的道德责任

市场机制会导致公共服务的缺失和垄断的形成,这就需要政府进行有效的干预,承担起公共服务均等化的职责。但是均等化并不是平均主义,而是在差别下的均衡,重在确保机会均等、起点和过程公平等。公共服务均等化能提高社会成员享用公共服务的整体效用水平,使资源配置达到效率最优的状态。公共服务均等化能够促进经济发展,保障成果共享,协调各方利益,从而推动社会和谐。公共服务均等化是现代政府不可推卸的道德责任,能够有效地促进社会主义和谐社会的构建。     

CE环境下产品设计与工艺设计集成方法的研究

并行设计理论和方法学是先进制造技术开发热点之一，本文通过分析并行设计过程的本质特点，提出了并行设计微循环的概念以描述产品设计与工艺设计集成的方法。     

具有扩散的三种群捕食系统正周期解的存在性

研究了一类具有时滞、扩散和比率依赖功能性反应的非自治两食饵--捕食者系统,应用重合度连续性定理,得到了该系统正周期解存在的充分条件,并给出一个例子以说明所得到的结果。     

巩固和发展少数民族聚居地区新型农村合作医疗制度的实证分析

少数民族聚居地区经济社会发展整体落后已经是政界、学界、民众的基本共识。新型农村合作为社会建设的重要内容少数民族聚居地区也明显落后于东中部地区。少数民族聚居地区新农合显现的特点为:低保障、低预防、低水平医疗服务、低发展水平、"四低"特征。应尽快科学解决"低保障"问题,尽快改善"低预防"状况,提高"低医疗服务水平",根本上解决"低发展水平",这样,少数民族聚居地区的新农合状况才会有所改善。