排序方式: 共有68条查询结果,搜索用时 15 毫秒
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“文革史学”是指1966-1976年“文化大革命”期间中国“史学”的发展和演变的历史,它既是中国史学史、也是“文革”研究的重要组成部分。“文革史学”是动乱年代政治运动的特殊产物,是中国史学史上极为黑暗的一页,给中国史学蒙上了极大耻辱。它截断了中国史学的优良传统,并离群索居,与不断前进的世界史学背道而驰;中国史学成了政治史学、影射史学的代名词,失去了作为一门科学的独立性与尊严。 相似文献
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中国农村经济研究会是大革命失败以后中国思想界矛盾斗争的产物,是在陈翰笙领导的农村调查的基础上产生的,还与陈在中央研究院的工作受阻有关。它从1933年成立到1951年解散,工作重心和会址数度变迁,在各地均开展了卓有成效的活动。该会具有鲜明的学术特色;保持"合法性"是其在国统区生存的基本策略;中共对该会的政治指导是通过在其中工作的中共党员的自觉行动实现的。中国农村经济研究会是左翼文化运动的重要组成部分。 相似文献
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实施语文新课程教学,首先要注重培养良好的语文学习习惯。语文能力的发展是跟良好的习惯的养成紧密联系的,学生一旦养盛了良好的习惯,就变被动为主动,变依赖为独立,进入自主学习境界。教师要关注学生的自主探究和合作探究,促使他们自己去获得知识,发展能力,让学生在探究性学习中学有所思,思有所疑,疑有所问。 相似文献
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《Journal of Geography in Higher Education》2012,36(1):92-99
The use of Web-based learning environments involves cultivating new types of study and research skills among students. Students must be able to find authoritative sources efficiently, evaluate the quality of documents thoroughly, and use and cite materials properly. Students may also need guidance in what constitutes appropriate conduct in respect of the Internet and Web. They need to understand the difference between citing a source and plagiarizing it, how to communicate effectively and courteously by email, and how copyright law applies to resources they wish to use. These issues can be addressed in classroom discussion or in exercises woven into online learning materials and assignments. 相似文献
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一洪石女士在其博士论文基础上修改完成的《战国秦汉漆器研究》一书,是近年来战国秦汉考古学研究的一项新成果,应当引起学术界的重视。战国秦汉漆器的研究是一个极有学术价值的课题。在这一时期各种材质的器物中,漆器占据着特殊的地位。以之与商周青 相似文献
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张玉春 《文物保护与考古科学》2009,21(2):34-43
为了从宏观和微观上掌握有关高句丽铁器的保存状况、腐蚀产物组成和结构,更深入了解文物保存的宏观表象和微观组分、结构之间的关系,借助偏光显微镜、扫描电镜、体式显微镜对选定的丸都山城宫殿址出土的8件铁器的基体及锈层进行观察分析.结果表明,褐色腐蚀微滴在器型较大的三件器物中均观察到,其中在2001JWGT806③:67中褐色腐蚀微滴周围的腐蚀物中,还分别观察到红褐色针状和黄褐色片状结构.另外有三件器物的锈蚀层外围都存在白亮枝状结构物质.腐蚀层存在枝状结构的器物中未观察到新腐蚀产物-褐色腐蚀液滴,两者不同时存在.腐蚀层中硫、氯含量呈不均匀性,但此两项影响腐蚀的因素变化趋势类同.从含氧量判断,腐蚀产物尤其是外层含氧量更高.铁钉履腐蚀速率大大超过其余器物,按腐蚀面积计,表面存在黑亮表层的几件器物腐蚀速率明显较低;大型器物的腐蚀明显比小型者严重. 相似文献
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汉水中游地区以青龙泉遗址第三期为代表的遗存属于石家河文化的一个地方类型,即石家河文化青龙泉三期类型.以往被归入此类型的遗存并不单纯,实际上包含了部分属于煤山文化乱石滩类型的遗存.根据青龙泉、七里河、老鸹仓、黄楝树等典型遗址出土的材料,可将石家河文化青龙泉三期类型分为早、晚两期.已公布的测年数据显示,其绝对年代为公元前2... 相似文献
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Jamie E. Padgett Reginald DesRoches Emily Nilsson 《Journal of Earthquake Engineering》2013,17(6):918-933
This article presents the results of a seismic risk assessment of the bridge network in Charleston, South Carolina and the surrounding counties to support emergency planning efforts, and for prioritization of bridge retrofit. This study includes an inventory analysis of the approximately 375 bridges in the Charleston area, and convolution of the seismic hazard with fragility curves analytically derived for classes of bridges common to this part of the country. State-of-the-art bridge fragility curves and replacement cost estimates based on region-specific data are used to obtain economic loss estimates. The distribution of potential bridge damage and economic losses are evaluated for several scenario events in order to aid in the identification of emergency routes and assess areas for investment in retrofit. This article also evaluates the effect of uncertainty on the resulting predicted economic losses. The findings reveal that while the risk assessment is very sensitive to both the assumed fragility curves and damage ratios, the estimate of total expected economic losses is more sensitive to the vast differences in damage ratio models considered. 相似文献