失地农民社会养老保险法律问题研究     

黄玉芬 《北京工业职业技术学院学报》2009,8(4):93-96

城市化的发展带来耕地大面积被征用,失地农民不断增多。如何构建失地农民社会养老保险法律制度是社会保障法领域研究的新课题。很多地方在探索失地农民社会养老保险制度时运用“土地换保障”理论,建起了行之有效的筹资模式,其中浙江嘉兴、四川成都比较有代表性,通过对其制度的比较研究与分析,从立法形式、资金筹集、保险对象等方面对失地农民社会养老保险制度的构建提出了建议。  相似文献   

论教育技术的研究领域     

王永生 《教育技术导刊》2009,(3):5-7

分析了AECT1963—2005年定义的特征,指出了美国教育技术研究领域的变化。介绍了我国学者对教育技术定义的最新研究和我国教育技术的研究领域,分析了我国教育技术研究领域的现状与发展方向。  相似文献   

A Field Research on Test in English Listening Class     

李杰 《高等教育与学术研究》2009,(4)

The interrelationship among English teaching,learning and testing is discussed in the paper based on a field research on test in English listening class. The teachers' efforts to stimulate students' motivation in listening class is also a focus in it.  相似文献   

试论情感在田径教学中的价值     

郭金荣 《吉林体育学院学报》2011,(6):147-148

田径是各项运动的基础,享有“体育之母”的美称,它对促进学生的身体发展及对其他各项运动技能的掌握与提高起着良好的作用。在田径教学中,不但要：重视对学生的基本知识、技术的传授和能力培养,而且更应重视与学生进行情感的交流。  相似文献   

研究性学习与物理教学的有机整合     

杨光弟 《临沧师范高等专科学校学报》2011,(2)

在教学实践中确立合理的物理教学与研究性学习的有机整合目标,采用发挥教材和学习资料在研究性学习中的作用、挖掘物理学史的内容,充分利用本校案例的方法实现研究性学习与物理教学的结合,并通过将电工学、数字电路、课外活动有机整合的案例加以说明。  相似文献   

一种改进人工势场法的多机器人局部避碰规划方法     

万超  杨宜民 《科技广场》2011,(1):35-37

本文针对多移动机器人局部路径规划问题,提出一种基于改进的人工势场算法的策略。当多个机器人在安全的距离范围内相遇时,通过利用机器人之间产生的优先级退避策略走出对方视野,从而避免彼此碰撞、死锁。仿真结果表明此方法是有效的。  相似文献   

中国出版史的研究对象和范围──关于编撰中国古代出版通史的基本看法     

刘光裕 《出版科学》2008,16(3):83-87

中国古代的出版概念,是复制和发行两要素说。编辑并非出版诞生的标志,它是出版成熟或趋于成熟的标志。没有编辑的出版活动普遍存在于古代。出版史的研究对象是历史上以公众传播为宗旨,以作者为起点、读者为终点的书籍传播。出版史的研究范围大致是历史上书籍传播过程与在这过程中出现的重要人物、重要事件,以及影响、制约书籍传播的社会历史环境。  相似文献   

关于保守场判据的一点注记     

宋克慧  龙入海 《蒙自师范高等专科学校学报》1993,(2)

本文通过对两个问题的讨论。阐述了通常保守场的数据不够精确的原因。并最后给出了一个较为准确的数据。  相似文献   

Empowerment in Science Curriculum Development: A microdevelopmental approach     

Marc S. Schwartz  Philip M. Sadler 《International Journal of Science Education》2013,35(8):987-1017

This study characterizes how learning and teaching differs as the responsibility for choosing curriculum goals and the strategies to reach those goals shifts between teacher and the students. Three different pedagogical approaches were used with 125 seventh‐grade and eighth‐grade students. All three curricula focus on electromagnetism, and were taught by two teachers in different schools over a two‐week period. When students had control over the strategies employed to reach goals, their engagement stayed high. All three curricula advanced student understanding to some degree; however, large and significant gains were seen only for the pedagogy in which teachers set the specific learning goals and students had control over how to achieve them. Microdevelopment, a principle by which short‐term learning recapitulates the stages seen in long‐term developmental growth, is found to be a useful framework for curriculum development and for analyzing changes in student understanding. In general, initial “tinkering” activities are best followed by attempts at representing phenomena, only then to be followed by abstract conceptualization. On balance, we find that students benefit most from freedom to control the procedures that they generate in response to well‐structured goals presented by the teacher.  相似文献   

Scanning electron microscope hypsometry as a tool for evaluating the impact of surface treatments: A case study on sub-fossil bone     

《文物保护研究》2013,58(1):55-64

Abstract

Plaster of Paris field jackets are commonly employed for lifting fragile archeological and paleontological material during excavation. When the plaster has been applied directly to the object surface its removal poses a severe risk of damage and loss. This study documents the development of an experimental method to test the suitability of various techniques for removing plaster of Paris from sub-fossil bone. The use of digital microscopic elevation models, already in use in other disciplines, was tested as a method for quantifying surface loss resulting from conservation treatments. The study concludes that citric acid is not suitable for use in close proximity to sub-fossil bone. Air abrasion and laser ablation proved extremely damaging, but ultrasonic cleaning caused no detectable damage. This study has relevance to the removal of plaster of Paris from other materials, such as carbonaceous statuary. The analytical technique itself has a far wider application and is recommended for evaluation of all surface treatments that have the potential to cause loss on a microscopic scale.  相似文献