图式理论与英语听力理解

以图式理论为依据,讨论图式知识对英语听力理解的影响,图式理论对英语听力教学的启示等问题,旨在提高学生的英语听力能力。     

商业模式创新分析——基于外部利益相关者视角

商业模式构成企业逻辑框架,同时也动态影响企业的整个运营流程,外部利益相关者作为情境变量,对商业模式价值的形成与创新有重要的影响作用。本研究将企业看作整体,通过分析政府机构、公众&社区、竞争性企业、互补性企业、供应商、消费者对企业的价值导向作用,并结合企业特征构建新的分析框架,从不同维度视角探索各类型企业在商业模式创新与外部利益相关者之间的作用关键点,为相关研究提供新的基础性研究框架。     

电感耦合等离子发射光谱法测定铅黄铜中常微量元素

研究了用电感耦合等离子发射光谱法(ICP-AES)对铅黄铜合金中多元素分析的基本条件,确定了合适的谱线,采用相邻峰背景扣除法对光谱干扰进行了校正,探讨了酸度对光谱强度的影响,同时测定了各元素的检出限.测定元素的回收率为92%~107%,精密度为0.25%~2.75%.     

语法正确与语用得体——大学英语教学的语用学思考

本文通过一些语用实例对大学英语教学中语法正确与语用得体进行探讨,指出大学英语教师应该更加重视语用学的学习与研究,自觉利用语用学原理指导教学实践。     

大学生英语自主学习能力培养策略

学生自主学习能力的培养是当今教学改革的主要内容之一。为全面提高学生英语的综合应用能力,教师必须帮助学生确立学习目标,正确引寻学习策略,培养良好的学习习惯,从而提高他们的自主学习能力。     

Enhancing survey‐based investment forecasts

We investigate the accuracy of capital investment predictors from a national business survey of South African manufacturing. Based on data available to correspondents at the time of survey completion, we propose variables that might inform the confidence that can be attached to their predictions. Having calibrated the survey predictors' directional accuracy, we model the probability of a correct directional prediction using logistic regression with the proposed variables. For point forecasting, we compare the accuracy of rescaled survey forecasts with time series benchmarks and some survey/time series hybrid models. In addition, using the same set of variables, we model the magnitude of survey prediction errors. Directional forecast tests showed that three out of four survey predictors have value but are biased and inefficient. For shorter horizons we found that survey forecasts, enhanced by time series data, significantly improved point forecasting accuracy. For longer horizons the survey predictors were at least as accurate as alternatives. The usefulness of the more accurate of the predictors examined is enhanced by auxiliary information, namely the probability of directional accuracy and the estimated error magnitude.     

非电子类电工电子实验模块构建及考核标准

通过对全日制普通高校非电子类专业开设的电工电子实验教学中实验模块构建及考核标准优化问题的研究分析,进行了相应的思考,并提出了对策方案.     

英语专业开设专门用途英语的可行性研究

分析了给大学四年级英语专业学生开设专门用途英语(ESP)——"汽车英语"课程的可行性。ESP课程的教学材料从现有的资料中按照教学要求、目的选取。经过17周的教学,对学生掌握的汽车英语知识、翻译能力进行测试。结果表明,学生在学习课文和翻译课文过程中,能够逐渐掌握一些基本的汽车知识,能够较通顺地翻译汽车技术方面的文章。对教学材料的分析表明,在一篇技术文章中,技术词汇占的比例很小,因此,给英语专业学生开设汽车英语课程是可行的。     

Vaults and the major vault protein: Novel roles in signal pathway regulation and immunity

The unique and evolutionary highly conserved major vault protein (MVP) is the main component of ubiquitous, large cellular ribonucleoparticles termed vaults. The 100 kDa MVP represents more than 70% of the vault mass which contains two additional proteins, the vault poly (ADP-ribose) polymerase (vPARP) and the telomerase-associated protein 1 (TEP1), as well as several short untranslated RNAs (vRNA). Vaults are almost ubiquitously expressed and, besides chemotherapy resistance, have been implicated in the regulation of several cellular processes including transport mechanisms, signal transmissions and immune responses. Despite a growing amount of data from diverse species and systems, the definition of precise vault functions is still highly complex and challenging. Here we review the current knowledge on MVP and vaults with focus on regulatory functions in intracellular signal transduction and immune defence. Received 27 June 2008; received after revision 25 July 2008; accepted 30 July 2008     

Using an Action Research Framework to Explore Assessment: A South African Case Study

This article is a reflection of my first experience with action research in trying to devise a system of assessment that would benefit both first and second language speakers of English in an assessment system that is plagued by its separatist past. In this paper, I discuss an action research study on oral assessment implemented at two tertiary institutions in South Africa. The actual details of each phase of the assessments are not reported on, but the methods used to facilitate the processes are. The findings and adaptations after each phase of the assessments are discussed to show the effectiveness of using an action research methodology.