英语阅读材料的选择

阅读是语言学习成功与否的关键所在.对于语言学习者而言,选择合适的阅读材料显得犹为重要.本文通过对目前我国国内语言学习者选择阅读材料的状况的分析,运用可读性理论和克拉申的语言输出理论,初步得出选择阅读材料的基本原则.     

人本主义课程论对电视教材编制的启示

数字信息化时代对电视教材提出了新的要求。为了使电视教材顺应时代的发展,对人本主义课程论进行了分析,期望从中获取一些启示性信息。     

A Weighted Composite Dose – Response Model For Human Salmonellosis

This article describes the development of a weighted composite dose – response model for human salmonellosis. Data from previously reported human challenge studies were categorized into two different groups representing low and moderately virulent/pathogenic Salmonella strains based on a disease end point. Because epidemiological data indicate that some Salmonella strains are particularly pathogenic, and in the absence of human feeding study data for such strains, Shigella dysenteriae was used as a proxy for highly virulent strains. Three single-hit dose – response models were applied to the human feeding study data and evaluated for best fit using maximum likelihood estimation: (1) the exponential (E-1pop), (2) the two-subpopulation exponential (E-2pop), and (3) the Beta-Poisson (BP). Based on the goodness-of-fit test, the E-1pop and BP were the best-fit models for low and moderately virulent/pathogenic Salmonella strains, and the E-2pop and BP models were better for highly virulent/pathogenic strains. Epistemic analysis was conducted by determining the degree of confidence associated with the selected models, which was found to be 50%/50% (E-1pop/BP) for low and moderately pathogenic Salmonella strains, and 9.8%/90.2% (E-2pop/BP) for highly virulent strains. The degree of confidence for each component model and variations in the proportion of strains within each virulence/pathogenicity category were incorporated into the overall composite model. This study describes the influence of variation in strain virulence and host susceptibility on the shape of the population dose – response relationship.     

关于专业英语教学的几点思考

文章针对专业英语教学的现状，结合教学实践，提出专业英语教学应加强师资与教材建设，教学中应注意加强专业词汇的掌握、加强英语思维训练、强调获取专业信息等几方面的问题。     

B-spline estimation for partially linear varying coefficient composite quantile regression models

Abstract

In this article, a new composite quantile regression estimation (CQR) approach is proposed for partially linear varying coefficient models (PLVCM) under composite quantile loss function with B-spline approximations. The major advantage of the proposed procedures over the existing ones is easy to implement using existing software, and it requires no specification of the error distributions. Under the regularity conditions, the consistency and asymptotic normality of the estimators are also derived. Finally, a simulation study and a real data application are undertaken to assess the finite sample performance of the proposed estimation procedure.     

《机械工程材料》教学改革与实践

分析了机械工程材料课程教学中在课程体系内容、教学观念、教学手段等方面存在的问题，提出了改革课程体系、转变教学观念、调整教学内容、改进教学手段、加强实验和实训等教学改革措施，注重学生实践能力和创新能力的培养，为高素质、创新型人才的培养提供了新的课程改革方法和思路。     

中学语文应加强基本伦理规范教育

中学语文教学在重视崇高思想品德教育的同时还应该加强日常伦理规范教育。前者的核心是牺牲和奉献，后者的准则是善良、诚实、热心、有责任心、对社会有用等；两者有层次区别又相互联系。目前试用的教材普遍存在着混淆两者关系，忽视伦理规范教育的问题，教育理论界对此尚缺乏充分的认识，许多教师在教材处理时也没有在这方面作具体深入的研究。     

多维视角下的元杂剧研究述评

20世纪元杂剧研究成就巨大，元杂剧研究更成为一门体系性的学科。关于元杂剧的研究文献相当丰富，研究者从各方面对元杂剧进行研究，如元杂剧的题材来源、元杂剧中所体现出的民俗文化、元杂剧所体现的语法、元代文人与杂剧兴盛相互关系等。总体看来，研究者研究方法的多样性和研究视角的多维性是20世纪元杂剧研究的主要特点。     

建筑材料资源的可循环利用

现代建筑是能源及材料消耗的重要组成部分,随着地球环境的日益恶化和资源日益减少,保持建筑材料的可持续发展,提高建筑资源的综合利用率已成为社会普遍关注的课题。欧美等发达国家对建筑材料资源的保护与可循环利用问题意识较早,已开展大量的研究与广泛的实践,如传统建筑材料的可循环利用、一般废弃物在建筑中的可循环利用及新型可循环建筑材料的应用等等,且大多由政府主导,以"自上而下"的方式形成对建筑资源保护较一致的社会认同。目前,我国对建筑材料资源可循环利用的研究已取得突破性成绩,但仍存在技术及社会认同等方面的不足,中国与发达国家在该领域还存在差距。     

钢-混凝土双面组合梁极限承载力计算方法研究

提出用简化计算方法、截面全过程分析和结构有限元分析等三种方法对双面组合连续梁极限抗弯承载力进行分析研究；以某一试验梁为例，对三种不同方法计算得到的承载力进行了比较分析，总结了各种方法的适用性，对双面组合梁的设计和研究有一定参考价值。