龙宫水溶洞的成因分析

文章分析了龙宫水溶洞的形成机制,认为龙宫水溶洞是在地层地貌基础、水动力条件和断裂构造等因素的影响下形成的一个地下伏流系统。在新构造运动的影响下,喀斯特作用的向深性不断增强,水溶洞的局部顶板崩塌,使完整的伏流系统分解为五段地下水溶洞,称为"五进龙宫"。龙宫的龙门瀑布与黄果树瀑布在形成机理上有一定的相似性。     

贵州喀斯特与非喀斯特地貌分布面积及其特征分析

论述贵州省喀斯特地貌及其它地貌的确切分布面积 ;探讨分布特征 ;划分喀斯特地貌县与非喀斯特地貌县 ,并以湄潭和紫云二县为例 ,阐明喀斯特高原区和峡谷区两大地貌单元的基本特征与差异。     

提问中的形成性评价

自20世纪80年代中期以来,由布鲁姆提出的形成性评价的相关理论引起我国教育界的广泛关注,广大教师纷纷在教学中运用形成性评价方法,并在一定程度上改善了教学成果,但是教师在使用形成性评价时仍然存在一些的误区。课堂提问是教师检测学生掌握知识的常用手段,但提问本身并不能达到形成性的目的。本文就教师如何更好地发挥课堂提问中形成性评价的功能进行探讨。     

A critical analysis of the use of formative assessment in schools

The literature is replete with exhortations about the need for teachers to use formative assessment. Clearly there are many advantages in doing so. Yet, empirical studies reveal that there is very little evidence that formative assessment is used frequently in classrooms. It is necessary to examine the reasons, why this is the case and to look for possible solutions to the problem.     

剖宫产427例原因分析

目的:探讨剖宫产率上升原因,寻找降低剖宫产率的可能途径。方法:统计1999-3-12～2000-4-8在张家口医学院第一附属医院427例剖宫产病历,分析各种剖宫产原因及所占比例。结果:胎儿因素197例(46.1％),其中胎儿宫内窘迫86例(20.1％);母体因素104例(24.4％),其中胎膜早破37例(8.796);母儿因素72例(16.9％);社会因素54例(12.6％)。结论:胎儿因素是剖宫产率上升的主要原因,要求剖宫产也占了很大比例,要降低剖宫产率需要医生和社会共同提高认识。     

形成性评估对学生自我效能感的促进作用分析

形成性评估是教师评估、学生互评和学生自我评估相结合的多元评估模式,在课堂环境中有效使用形成性评估可以为学生自我效能感的提高提供积极正面的预期信息来源,使学生成为积极主动的自主学习者.     

中苏关系实现正常化原因的层次分析

文章运用国际关系研究中常用的层次分析法,从国际系统因素、国家内部因素和决策者个人因素三个层次对中苏关系实现正常化的原因进行重新分析,避免了传统的历史和经验研究方法常常把各个层次的原因混淆在一起的弊端,使不同层次的原因所发挥的作用以及它们之间的主次关系得以明确。通过分析,文章在促进中苏关系正常化的诸多因素中,决策者个人因素是最主要的。     

佛教载于《宋书·夷蛮传》原因初探

《宋书·夷蛮传》是专记刘宋政权与周边国家交往的传记。然而,有关此时的佛教事宜也被载入该传。这种独特的现象与《宋书·夷蛮传》的编撰继承、传统儒家本位思想以及南朝佛教特有的夷蛮性有着密切的联系。     

"小学科"的困境描述及原因探析

由于诸多因素的影响,在我国中小学中形成了除考试科目以外的其他学科被称为"小学科"的现象.本文对"小学科"遭遇的困境,从专业师资,在学校、学生、社会中的地位及面对的评价体系等方面进行了描述,并从"小学科"认识偏见、重要地位、教学资源、专业教师自身素质和评价体系五个方面进行了原因探析.     

Diversity in the principalship: The impact of the formative years

This paper presents the key findings of a recent study into the relationship between first time principals' formative years and their early experiences in the leadership role. The family, school and religion all had a significant influence in shaping basic values and beliefs, and the beliefs and values in turn exercised considerable influence on how new principals carried out their roles. It was evident that the socialization agencies of principals' respective families, workplaces and schools all played a noticeable role in the conception of their ‘self’ and their ‘leadership character’. The study also illustrates the impact of early experiences on the educators even before they took up positions of leadership, and throws light on their aspirations to become leaders and the strategies they employed to work their way up the career ladder. The paper explains how early life experiences, when combined with the historical, economic and cultural context in Singapore, affected the thoughts, attitudes, and actions of the novice principals. Finally, the paper examines some of the things that were perceived by the new principals as either supporting or hindering their practice, and at how they were affected. This revised version was published online in August 2006 with corrections to the Cover Date.