Monte Carlo法在含体积缺陷压力管道可靠性分析中的应用

工业生产装置中,压力管道是重要的组成部分.通常压力管道中存在着局部减薄,而且局部减薄尺寸等参数具有物理不确定性和统计不确定性,所以应该用可靠性来定量衡量其安全状况.依据GB/T 19624-2004计算模型进行蒙特卡罗模拟,计算局部减薄管道的可靠性.该计算方法使用方便,结果可靠.     

Structural dynamic responses analysis applying differential quadrature method

INTRODUCTION The differential quadrature method (DQM) was proposed by Bellman and Casti as an analogous ex- tension of the quadrature method for integrals (Bellman and Casti, 1971; Bellman et al., 1972). It can be essentially expressed as the values of the de- rivatives at each grid point as weighted linear sums approximately of the function values at all grid points within the domain under consideration. As a distinct numerical solution technique to obtain the initial and/or boundary …     

从词义角度谈现在进行时言外之意

英语时态形式与意义不一致的现象是广大英语学习者在英语应用中很容易产生错误的地方。时态的意义和用法并不能以时态形式笼统解释。现在进行时不表示"正在进行"的原因正是动词本身的词义所决定的。根据词义,动词有静态动词和动态动词之分,现在进行时除表示"现在正在进行"的行为动作以外,还包括表示"过去"、"将来"、"渐进"、"重复"、"临时"、"描述"等意义。     

关于完善高校领导干部政绩考核中几个问题的思考

高校领导干部政绩考核是干部管理工作中的一项重要工作,考核指标、考核目的、考核方法、考核主体、考核结果的运用等问题联系非常密切,系统研究,大胆实践,意义重大。     

学科质量评价的属性识别法

高等学校学科建设是体现办学实力和办学特色的 基础性工作。因此，建立合理的学科质量评价体系，从 而对高校学科质量进行评价，对提高高校教学质量、科 研水平以及社会服务能力等方面具有重要意义。属性 识别理论已成功地应用于环境质量等多属性综合评价 领域，取得了较好的评     

关于发展性教学评价的理性思考

本文针对目前评价领域可能出现的极端化倾向,提出了发展性教学评价应该树立的评价理念以及应该坚持的评价原则。     

Using Google Forms to track library space usage

This article is a response to the excellent “Using Mobile Technology to Observe Student Study Behaviors and Track Library Space Usage” by Susan Thompson. Thompson reviews the literature regarding user counts on mobile devices and describes the California State University San Marcos (CSUSM) Library's evaluation of SUMA, Counter+, and CloudOn. After trialing these mobile technologies, CSUSM selected CloudOn. At New York University Abu Dhabi, we use Google Forms to conduct user counts on an iPad and Google Sheets to evaluate these data. We find that Google Forms are easy to set up, modify as necessary, and present the data in easy-to-manipulate spreadsheets.     

Teaching Them to Teach: Programmatic Evaluation of Graduate Assistants’ Teaching Performance

Academic libraries are one of the most important sources of “on the job” training for future library instructors. Librarians who supervise and assess these future library instructors (often in graduate assistant positions) often choose to provide observations and feedback each semester to these instructors in training. Scholarly literature, however, provides little information on whether this system helps graduate assistants to develop as teachers. The authors of this article assessed graduate assistants’ performance as teachers over three semesters using a system of observation and self-assessment. They analyzed both patterns and areas of growth and discuss the strengths and weaknesses of this system.     

学生评教中存在的问题及对策研究

学生评价教师课堂教学质量是实现教学质量自我监控的重要环节之一,有助于保证教育服务质量的稳步上升、学生的健康成长与教师教育水平的提高。但由于种种原因,学生评教时往往会出现评价目的不明、评价形式单一、评价内容片面等诸多问题。要真正实现学生评教的价值,必须对这些问题进行分析,并找出相应的解决方案。     

企业经营者和生产者尽忠问题的动态博弈分析

本文在对不完全信息下的股东与经营者、经营者与生产者之间的动态行为进行了博弈分析,揭示了促使经营者尽力和生产者用心的机制。