BEHAVIOUR OF REHABILITATED STRUCTURAL WALLS

An experimental program for identifying the causes of failures in structural walls under earthquake loading and investigating potential rehabilitation schemes was undertaken. Large-scale models of the plastic hinge region of the walls were tested. An innovative test setup that provides the possibility of controlling the ratio of the shear force to both bending moment and axial load was constructed. A control wall was tested and failed prematurely in shear reproducing the failure observed in the field. Two different rehabilitation schemes to improve the behaviour of the wall using biaxial fibre reinforced polymer (FRP) sheets were designed to prevent the shear failure. To improve the ductility, the end column elements of the walls were confined using anchored FRP. The two schemes were tested and proved to be effective in increasing shear strength, ductility, and energy dissipation capacity of the walls.     

FRAGILITY ASSESSMENT OF SLAB-COLUMN CONNECTIONS IN EXISTING NON-DUCTILE REINFORCED CONCRETE BUILDINGS

Fragility functions that estimate the probability of exceeding different levels of damage in slab-column connections of existing non-ductile reinforced concrete buildings subjected to earthquakes are presented. The proposed fragility functions are based on experimental data from 16 investigations conducted in the last 36 years that include a total of 82 specimens. Fragility functions corresponding to four damage states are presented as functions of the level of peak interstory drift imposed on the connection. For damage states involving punching shear failure and loss of vertical carrying capacity, the fragility functions are also a function of the vertical shear in the connection produced by gravity loads normalised by the nominal vertical shear strength in the absence of unbalanced moments. Two sources of uncertainty in the estimation of damage as a function of lateral deformation are studied and discussed. The first is the specimen-to-specimen variability of the drifts associated with a damage state, and the second the epistemic uncertainty arising from using small samples of experimental data and from interpreting the experimental results. For a given peak interstorey drift ratio, the proposed fragility curves permit the estimation of the probability of experiencing different levels of damage in slab-column connections.     

《英语写作》课堂教学探索

《英语写作》课程是英语本科专业学生必修课程、同时也是专业培养目标中学生必须掌握的核心技能之一。然而,其教学过程中也存在较多的问题。本文从课程内容设置、学生学习现状、及教学措施等方面对该课程进行探索,目的是改进教学方式方法,提高教学质量。     

The 2012 TRIP survey of international relations in Australia: one problem to rule us all

This article analyses the results of the most recent and largest cross-national survey on the international relations discipline. Completed by scholars in 20 countries, the survey covered the areas of teaching, research, foreign policy, the profession, and the relationship between policy and academia. From an Australian perspective, the key findings include the strong link between what academics teach and research; the narrowing epistemological gap between the USA and Australia; the curious pessimism of scholars on a wide range of foreign policy issues; and the ability of scholars to define research quality independently of other national settings. The most significant and alarming finding, however, concerned how the present structure of the field is undermining scholars'attempt to forge closer, more influential ties with policy makers in Canberra. In fact, it is clear from the results that what academics research and how they go about it is actually counterintuitive to this goal. The article concludes with three recommendations aimed at rectifying this problem.     

我国人文地理学研究生课程教学改革初探——基于与美国研究生课程的比较和感知

扩招之后的我国研究生教育质量受到质疑。这种质量下降的起因可能是多方面的,但课程教学不规范则是很重要的一个方面。本文对我国人文地理学研究生课程教学进行了个人思考,以期认清可能存在的相关问题,并参照被世界各地当作楷模的美国研究生课程教学的长处,提出了作者的研究生课程教学改革建议:编制详细的课程教学大纲、以讨论课为主、引导学生读书、拓宽视野和知识基础。在此基础上,有望建立以学生为中心的研究生教学模式,进而缩小与欧美发达国家研究生教育的差距,并为知识经济发展提供必需的高素质人才。     

Teaching and Social Reform in the 1960s: Lessons from National Teacher Corps Oral Histories

Abstract: This article draws on oral history narratives to examinethe beliefs and expectations that brought a group of young peopleto the field of teaching in the 1960s through the National TeacherCorps (NTC). The oral histories address the identities, politics,aims, and backgrounds of a dozen NTC participants. By situatingthe voices of these young people within a larger social andhistorical context, the article uses oral history testimonyto reconsider existing accounts of social reform movements andteaching in the 1960s and early 1970s. Specifically, the oralhistories allow Teacher Corps participants to emerge as individualswho represent an important if largely unexplored populationthat took part in 1960s movements toward greater equality andsocial justice and who embraced the unique perspective thatteaching in ordinary schools serving poor and minority studentscould offer meaningful opportunities for grassroots, socialreform activity.     

从教谕文献看古代埃及的伦理教育

关于言行和品性的教导是比较为人熟知的教谕文献的重点内容,但是实际上教谕文献当中还包含着伦理教育其他方面的重要内容.首先,文献中暗含着教导方式问题,即一种劝导或者说教的方式.其次,教谕文献的主旨在于以"明智"取代"无知",所以文献中也陈述遵从教导的益处以及忽视教导的害处.另外,和其它涉及伦理内容的文献相比,教谕文献真正地诠释了作为古代埃及伦理学中心概念的"玛阿特"的具体内容,"玛阿特"无疑就是伦理教育的原则.通过对伦理教育相关问题的探讨,可以更为深刻地了解古代埃及伦理教育的基本原理以及社会价值的取向.     

多媒体教学模式在大学英语教学中的应用

多媒体教学模式在大学英语中的综合应用有助于提高教学效果,并为探索新的教学方法提供新的契机。传统教学模式和多媒体教学模式有很大的差别,如何在大学英语教学中合理利用多媒体技术,提高教学质量,是本文探讨的中心。     

如何提高成人外语课堂教学的有效性

本文从成人外语学习的认知特点入手,探讨了外语教师应以科学的教育教学理论为指导,采取切实可行的教学策略,使成人学习者具有可持续发展的潜力,具备以外语作为工具进行有效交际的能力。     

Reverse Engineering the Ceramic Cooking Pot: Cost and Performance Properties of Plain and Textured Vessels

Ceramic cooking pots throughout the world vary in exterior surface treatment from smooth to roughly textured. An intriguing example of this variation occurred in the Puebloan region of the southwestern United States where cooking pots changed from scraped plain to highly textured, corrugated vessels between the seventh and eleventh centuries AD, and then reverted back to plain-surfaced by the fifteenth century. To investigate potential cost and performance differences between plain and corrugated cooking pots, a set of controlled experiments were performed, which document manufacturing costs, cooking effectiveness, and vessel durability. These experiments indicate that while corrugation may have increased manufacturing costs, neck corrugations improved vessel handling, upper body corrugations yielded greater control over cooking, and basal corrugations extended vessel use-life. Discerning the explanatory significance of these results for cooking pot change in the Southwest and elsewhere requires additional data on the contexts in which these pots were made and used.