Krashen的语言输入理论与多媒体网络英语教学

语言输入理论是第二语言习得研究的重要理论之一。网络英语和网络英语教学在我国外语界越来越受到重视。文章客观地介绍了Krashen的语言输入理论的主要观点及其对我国网络英语教学的启示。     

吉林省地区间经济力差距分析

按照Kuznets倒U字假说,我国实现经济高速增长过程中,由于区域经济增长的不平衡性,导致了地区间经济力差距的扩大。吉林省为了尽可能地缩小地区间经济力的差距,以便促进地区的均衡发展,应该在省内形成以信息和高速公路网络为基础的共同市场。     

沈阳市产业关联和产业结构变化的实证研究

沈阳在高速经济增长的同时 ,工业化的进程加速 ,产业结构发生很大变化。本文将利用 1 996年和 2 0 0 0年两个时点的投入产出表 ,分析沈阳市产业关联和产业结构变动规律和特征。     

Sampling Strategies for Toxic Air Contaminants

Annual concentrations of toxic air contaminants are of primary concern from the perspective of chronic human exposure assessment and risk analysis. Despite recent advances in air quality monitoring technology, resource and technical constraints often impose limitations on the availability of a sufficient number of ambient concentration measurements for performing environmental risk analysis. Therefore, sample size limitations, representativeness of data, and uncertainties in the estimated annual mean concentration must be examined before performing quantitative risk analysis. In this paper, we discuss several factors that need to be considered in designing field-sampling programs for toxic air contaminants and in verifying compliance with environmental regulations. Specifically, we examine the behavior of SO2, TSP, and CO data as surrogates for toxic air contaminants and as examples of point source, area source, and line source-dominated pollutants, respectively, from the standpoint of sampling design. We demonstrate the use of bootstrap resampling method and normal theory in estimating the annual mean concentration and its 95% confidence bounds from limited sampling data, and illustrate the application of operating characteristic (OC) curves to determine optimum sample size and other sampling strategies. We also outline a statistical procedure, based on a one-sided t-test, that utilizes the sampled concentration data for evaluating whether a sampling site is compliance with relevant ambient guideline concentrations for toxic air contaminants.     

人格结构的行为归类假设与中国人人格的文化意义

根据对中西方人格概念的词源和内涵的分析,人格内容可划分为四个不同层次,包括个体的外显行为、内心体验、动机和神经生理基础等四个方面,不同层次之间存在密切的交互关系;文化对人格的不同内容都会产生一定的影响,但影响的程度存在差异.由于对行为含义观察角度的不同造成了中西方人格结构的差异,人格结构的特点也是对文化意义的直接反映.以后的研究应关注文化对人格、行为和适应之间关系的影响.     

An alternative to model selection in ordinary regression

The weaknesses of established model selection procedures based on hypothesis testing and similar criteria are discussed and an alternative based on synthetic (composite) estimation is proposed. It is developed for the problem of prediction in ordinary regression and its properties are explored by simulations for the simple regression. Extensions to a general setting are described and an example with multiple regression is analysed. Arguments are presented against using a selected model for any inferences.     

对我校科研发展状况的分析及思考

文章以广东工业大学“九五”期间科技投入与产出的统计数据为基础,描述了学校的科研状况,在分析其不足的同时,认为可通过制定合理的科研发展目标和发展战略、积极发挥科研管理的职能、注重“产学研”结合、巩固和建设几个有较大影响的重点学科等对策来提高学校的科研水平。     

我国产业间波及效应的探讨

从理论上来说,某一产业的变化会引起其它产业间的连锁反映。产业间的波及效应可以通过投入系数表来加以分析。通过实证分析,研究我国产业间波及效应的强弱,可以为国家制定产业政策、优化产业结构提供依据。     

The availability of personal and external coping resources: Thier impact on job stress and employee attitudes during organizational restructuring

This study examines the relationships among personal coping resources, social support, external coping resources, job stressors and job strains in a sample of 110 American Telephone and Telegraph employees undergoing a major organizational restructuring. The study expanded on a model suggested by Ashford (1988) by defining another category of coping resources that employees may draw upon to deal with the stressors and strains which occur during major organizational changes. External coping resources were defined as those which provided employees with a sense of 'vicarious control' in stressful situations. Results indicated that personal coping resources, social support and external coping resources had a direct effect upon job stressor and strain levels. No 'buffering' effect of these coplng resources was found. Hierarchical regression analyses indicated that external coping resources added to the prediction of job stressors and strains even when pertonal coping resources and social support were entered first into the prediction questions.     

社会自主性的三种提升路径

社会自主性是现代化进程中的重要一维,社会自主性对市场侵蚀的抵抗和对国家权力的制约有利于形成均衡性的治理结构。现代化进程的历史维度、关系范畴的相对维度和治理现代化的功能维度构成理解社会自主性的3种视角。中国经由长期历史沉淀形成的是国家本位主义传统,改革开放打破了国家-社会的同构状态并塑造了一个相对自主的社会。中国社会缺乏自治机制的文化土壤和理念基础,社会自主性的提升需要国家以主动塑造方式,通过输入路径、合作路径和培育路径进行治理推动。