完形填空题型分析解题步骤与技巧

完形填空是英语专业四级考试的基本测试题型，其目的是测试学生运用语言的综合能力。针对考生所面临的问题，对完形填空进行题型分析，总结解题步骤与技巧，并针对考生的复习备考提出指导性建议。     

室内装饰材料中甲醛含量的测定

利用二乙酰基二氢二甲基吡啶（DDL）在412nm处具有最大吸光度,运用汉茨（Hantzsch）反应对甲醛所表现出来的良好特性,采用气体分析法测定样品中甲醛的含量进而分析新装修后居室的污染情况,结果表明,气体分析法是一种快速便捷的测定新装修后居室的甲醛含量的方法,其灵敏度高.     

微课在数学分析教学中的应用

随着无线网络的全覆盖和手机等移动产品的普及,基于“微课”的学习越来越普遍,“微课”必将成为一种新的适应时代发展的教学模式和学习方法。基于微课小而精、制作简单、形式新颖、学习的时间和地点比较自由的特点,本文探索利用微课辅助教学,拓展教学新方法。     

The interplay of representations and patterns of classroom discourse in science teaching sequences

The purpose of this study is to examines the relationship between the communicative approach of classroom talk and the modes of representations used by science teachers. Based on video data from two physics classrooms in Singapore, a recurring pattern in the relationship was observed as the teaching sequence of a lesson unfolded. It was found that as the mode of representation shifted from enactive (action based) to iconic (image based) to symbolic (language based), there was a concurrent and coordinated shift in the classroom communicative approach from interactive–dialogic to interactive–authoritative to non-interactive–authoritative. Specifically, the shift from enactive to iconic to symbolic representations occurred mainly within the interactive–dialogic approach while the shift towards the interactive–authoritative and non-interactive–authoritative approaches occurred when symbolic modes of representation were used. This concurrent and coordinated shift has implications on how we conceive the use of representations in conjunction with the co-occurring classroom discourse, both theoretically and pedagogically.     

近二十年来中国政治文化变迁与分析

近二十年中，随着中国社会的转型与变迁，特别是市场经济为基本导向的经济改革的不断深入，中国政治文化的变迁呈现出从依附走向独立，从单维转向多维，从封闭转向开放，从情绪化走向法理化等一系列特征。一体多元化的政治文化格局的客观进程正在悄悄地进行－尽管这一进程刚刚起步。     

Thermodynamic Analysis and Comparison on Low Temperature CO_2-NH_3 Cascade Refrigeration Cycle

Intheapplicationsofindustrialandcommercialrefrig erationsystem ,iftherequiredrefrigerationtemperatureisverylow ,theconventionalvaporcompressionsystemisdiffi culttomeettherequirementbecausewhenthedifferencebe tweentheevaporatingtemperatureandthecondensingtemper atureissohighthatitishardtofindarefrigeranttomeettheneedsasthecondensingpressureisnottoohighandtheevap oratingpressureisnottoolow .Whentherefrigeratingtemper atureisverylow ,thecascaderefrigerationcycleissuitabletobeused .Itcannotonlysat…     

高校学生有意欠费的心理分析及对策研究——兼论大学生诚信教育

随着社会经济成份、组织形式、利益关系等日益多样化,人们的思想观念、思维方式和价值取向也日益呈现出多元的发展趋向,尤其是受社会不良风气的影响,大学校园里也充斥着许多虚伪丑陋的现象,大学生有意欠费之风便是其中之一。本文从大学生有意欠费的心理因素入手进行分析,研究少数大学生有意欠费现象,并就大学生的诚信教育问题谈一些初浅的看法。     

Making sense of learner and learning Big Data: reviewing five years of Data Wrangling at the Open University UK

Most distance learning institutions collect vast amounts of learning data. Making sense of this ‘Big Data’ can be a challenge, in particular when data are stored at different data warehouses and require advanced statistical skills to interpret complex patterns of data. As a leading institute on learning analytics, the Open University UK instigated in 2012 a Data Wrangling initiative. This provided every Faculty with a dedicated academic with expertise data analysis and whose task is to provide strategic, pedagogical and sense-making advice to staff and senior management. Given substantial changes within the OU (e.g. new Faculty structure, real-time dashboards, two large-scale adoptions of predictive analytics approaches, increased reliance on analytics), this embedded case study provides an in-depth review of lessons learned of five years of data wrangling. We will elaborate on the design of the new structure, its strengths and potential weaknesses, and affordances to be adopted by other institutions.     

面向对象方法

综述面向对象方法(Object-Oriented Methodology简称OO方法)的由来和发展，以及当前的主要研究领域；OO方法的基本概念、主要特征，并从OO方法作为新的方法学、程序设计新范型和一门新技术的角度展开了论述．     

从翻译失误看语篇翻译中的深层逻辑语义分析

逻辑语义关系是指由某种表层逻辑结构显现，并通过语言表达而附加出来的意义关系。原文表层逻辑结构和深层逻辑语义的不一致是造成翻译中逻辑转换失误的重要原因。因此，译者在翻译时应仔细分析原文内在的逻辑语义关系，再用符合译入语习惯的逻辑形式表达出来。