Silphids in urban forests: Diversity and function

Many ecologists have examined the process of how urbanization reduces biological diversity but rarely have its ecological consequences been assessed. We studied forest-dwelling burying beetles (Coleoptera: Silphidae)—a guild of insects that requires carrion to complete their life cycles—along an urban-rural gradient of land use in Maryland. Our objective was to determine how forest fragmentation associated with urbanization affects (1) beetle community diversity and structure and (2) the ecological function provided by these insects, that is, decomposition of vertebrate carcasses. Forest fragmentation strongly reduced burying beetle diversity and abundance, and did so far more pervasively than urbanization of the surrounding landscape. The likelihood that beetles interred experimental baits was a direct, positive function of burying beetle diversity. We conclude that loss of burying beetle diversity resulting from forest fragmentation could have important ecological consequences in urban forests.     

对培养学生英语自主学习能力的实践与思考

分析了由于长期的应试教育带来学生自主学习的能力较差的状况,结合英语教学实践,提出通过培养学生预习习惯,改变学生对学习英语的态度,引导和教会学生阅读技巧及方法,激发学生阅读兴趣,从而提高他们的阅读速度和阅读理解能力,促进自学能力的提高。     

图书馆在加强大学生信息素质教育中作用初探

信息素质是大学生整体素质的重要组成部分,高校图书馆在加强大学生信息素质教育方面拥有很多优势,承担着重要责任,要充分发挥高校图书馆在信息资源提供、信息检索查询、信息网络保障、信息人才支持等方面的独特作用,做好大学生的信息素质教育工作。     

图书馆特色化与学科建设

探讨了高校图书馆特色化建设与学科建设之间的互动性关系，提出了高校图书馆特色化建设的具体途径与方法，并指出在特色化建设时应注意的三个问题：层次定位、类型标准和精品战略。     

保函在国际承包工程中的运作方式——商贸英语教学中应介绍的一课

保函是国际商务活动,尤其是国际工程承包业务中被普遍接受的一种担保形式.本文主要介绍涉外商贸活动中常用的几种保函及运作方式.指出在商贸英语教学中向学生教授此类专业知识的必要性.     

教师效能感研究述评

教师效能感的主要理论模型建构主要有罗特的控制点理论和班杜拉的自我效能理论。教师效能感通过教师行为而对学生自我效能及学习能力与成绩起作用,与此同时,环境因素和教师自身因素也对教师的教学效能感产生影响。     

管理案例教学法的探析

管理案例教学法是现代管理学教育中不可替代的重要方法 ,是目前大学教育中弥补学生管理实践不足、锻炼提高学生学会管理本领的重要手段 ,同时也是促进教师素质提高的重要途径。本文对此试作探析。     

浅谈英语教学的改革与创新

通过对英语教学现状的分析 ,对英语教学的改革与创新做了初步的探讨 ,说明了教学改革势在必行 ,并提出了今后教学改革的思路。     

Demographic Shifts in the Czech Republic after 1989: A Second Demographic Transition View

A dramatic change in fertility,family formation and living arrangements tookplace in the Czech Republic over the 1990s. Theestablishment of democracy, profound socialtransformation and transition to the marketeconomy affected the values and demographicbehaviour of the young Czech generation. Thispaper examines whether these demographic shiftscan be interpreted within the framework of thesecond demographic transition. The theoreticalpart discusses the idea of the transition,outlining three distinctive conceptualisations.Two of them – the view of the transition as aprogression of characteristic interrelateddemographic changes and a broader viewstressing the importance of underlyingideational factors – fit the Czech situationvery well. A comparison with the Netherlandsreveals that the onset of the transition in theCzech Republic may be clearly located in thefirst half of the 1990s, lagging two decadesbehind the Netherlands.     

关于大专英语分层教学的若干问题思考

本文认为大专英语教学可分成 A、B、C三层次进行教学 ,并对如何分层、各层次的教学目标、层次教学的管理及师资的要求等作探讨