探究返璞归真的教育变革之道——兼论中国远程教育整体创新的思路和趋势   总被引：1，自引：1，他引：0  

桑新民 《远程教育杂志》2010,28(5):3-9

从21世纪信息化与全球化合流的大趋势着眼,在理论与实践结合上,系统探讨了教育变革的规律和趋势,深刻剖析了导致我国社会和教育之异化的两只“看不见的手”：“行政化”（官本位）和“商品化”（钱本位）,提出教育变革的一个重要趋势是返璞归真。并在大教育的广阔视野中,对中国远程教育创新发展进行了整体思考,解读了在信息技术浪潮中突现的中国现代远程教育三大舞台,提出当前我国远程教育发展中必须实现的三大转变,论述了从五个方面综合推进远程教育整体改革持续深化的思路。认为远程教育的本质属性是一种超越面对面之传统学校教育时空的学习形式,因此也必然是一种以学生自学为主的学习形式或受教育形式,这其实是教育冲破时空束缚而获得的一种重大解放和自由,也正是现代远程教育最重要的价值和希望之所在。  相似文献   

小学教师语言暴力成因及消解对策   总被引：1，自引：0，他引：1  

桑青松 《教育科学研究》2007,(12):54-56

小学教育是人的生命发展的奠基阶段,肩负着促进生命全面、和谐、自由、创造地成长的重任.和谐的校园环境乃至于和谐校园的话语环境对儿童的成长尤为重要,它是儿童青少年健康成长的重要保证,也是构建和谐社会的有机组成部分.但在基础教育阶段,小学教师语言暴力的现象时有发生,严重影响着小学生的身心发展.因此,营造和谐的校园话语环境,有利于落实科学教育发展观,有利于学校教育目标的实现,有利于青少年的健康成长.  相似文献   

A novel on-chip three-dimensional micromachined calorimeter with fully enclosed and suspended thin-film chamber for thermal characterization of liquid samples     

Benyamin Davaji  Hye Jeong Bak  Woo-Jin Chang  Chung Hoon Lee 《Biomicrofluidics》2014,8(3)

A microfabricated calorimeter (μ-calorimeter) with an enclosed reaction chamber is presented. The 3D micromachined reaction chamber is capable of analyzing liquid samples with volume of 200 nl. The thin film low-stress silicon nitride membrane is used to reduce thermal mass of the calorimeter and increase the sensitivity of system. The μ-calorimeter has been designed to perform DC and AC calorimetry, thermal wave analysis, and differential scanning calorimetry. The μ-calorimeter fabricated with an integrated heater and a temperature sensor on opposite sides of the reaction chamber allows to perform thermal diffusivity and specific heat measurements on liquid samples with same device. Measurement results for diffusivity and heat capacitance using time delay method and thermal wave analysis are presented.  相似文献   

Process for silvering iron     

Edward Sang 《Journal of The Franklin Institute》1833,15(6):404-408

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传统武术规范与发展的理性思考   总被引：4，自引：1，他引：3  

桑全喜 《吉林体育学院学报》2005,21(1):118-119

通过对传统武术发展现状，发展过程中应该做好的几项工作的分析论述，指出传统武术发展的方向。为传统武术的规范和发展提出一些建议，从而更好地推动中国武术运动的发展。  相似文献   

基于语义计算的查询扩展优化研究   总被引：1，自引：0，他引：1  

桑艳艳  刘培刚  李勇 《情报学报》2007,26(5):704-710

查询扩展技术是指在原有查询的基础上加入与用户输入的检索用词相关联的新词,组成新的更长、更准确的查询,用于弥补用户查询信息不足的缺陷.为了提高文本检索的效率,纳入网络检索环境下的用户个人偏好,在查询扩展技术中引入语义计算是一个重要研究方向.文章从语义计算的角度提出了基于语义关联树的查询扩展算法,通过动态生成语义关联树,有效降低词相似度矩阵计算工作量.通过控制语义关联树的层次结构及复杂度,灵活高效的生成不同语义空间模型.实验证明,该算法能有效提高文本检索的准确率.  相似文献   

Viscoelastic effects on electrokinetic particle focusing in a constricted microchannel     

Xinyu Lu  John DuBose  Sang Woo Joo  Shizhi Qian  Xiangchun Xuan 《Biomicrofluidics》2015,9(1)

Focusing suspended particles in a fluid into a single file is often necessary prior to continuous-flow detection, analysis, and separation. Electrokinetic particle focusing has been demonstrated in constricted microchannels by the use of the constriction-induced dielectrophoresis. However, previous studies on this subject have been limited to Newtonian fluids only. We report in this paper an experimental investigation of the viscoelastic effects on electrokinetic particle focusing in non-Newtonian polyethylene oxide solutions through a constricted microchannel. The width of the focused particle stream is found NOT to decrease with the increase in DC electric field, which is different from that in Newtonian fluids. Moreover, particle aggregations are observed at relatively high electric fields to first form inside the constriction. They can then either move forward and exit the constriction in an explosive mode or roll back to the constriction entrance for further accumulations. These unexpected phenomena are distinct from the findings in our earlier paper [Lu et al., Biomicrofluidics 8, 021802 (2014)], where particles are observed to oscillate inside the constriction and not to pass through until a chain of sufficient length is formed. They are speculated to be a consequence of the fluid viscoelasticity effects.  相似文献   

Jamming and unjamming transition of oil-in-water emulsions under continuous temperature change     

Se Bin Choi  Joon Sang Lee 《Biomicrofluidics》2015,9(3)

To analyze the jamming and unjamming transition of oil-in-water emulsions under continuous temperature change, we simulated an emulsion system whose critical volume fraction was 0.3, which was validated with experimental results under oscillatory shear stress. In addition, we calculated the elastic modulus using the phase lag between strain and stress. Through heating and cooling, the emulsion experienced unjamming and jamming. A phenomenon—which is when the elastic modulus does not reach the expected value at the isothermal system—occurred when the emulsion system was cooled. We determined that this phenomenon was caused by the frequency being faster than the relaxation of the deformed droplets. We justified the relation between the frequency and relaxation by simulating the frequency dependency of the difference between the elastic modulus when cooled and the expected value at the same temperature.  相似文献   

Pornography Consumption and US Adults' Attitudes toward Gay Individuals' Civil Liberties,Moral Judgments of Homosexuality,and Support for Same-Sex Marriage: Mediating and Moderating Factors     

Paul J. Wright  Robert S. Tokunaga  Soyoung Bae 《Communication monographs》2014,81(1):79-107

This study compared views on homosexuality among US adults who varied in their consumption of pornography. Nationally representative cross-sectional data generated by the General Social Survey (GSS) between 2000 and 2012 were employed. Pornography consumers expressed more positive attitudes toward gay individuals' civil liberties, more moral acceptance of homosexuality, and more support for same-sex marriage. Moderation analyses indicated the importance of consumers' views on personal freedom and morality. Associations between pornography consumption and positive views on homosexuality were strongest when consumers placed a premium on personal freedom and adopted a relativistic perspective on morality. Mediation analyses indicated that pornography consumption indirectly predicted more positive views on homosexuality through a nontraditional attitude toward sex. Supplementary analysis of nationally representative three-wave GSS panel data confirmed the temporal sequencing of these links. Prior pornography consumption predicted a more positive subsequent attitude toward nontraditional sex, which in turn predicted more positive subsequent views on homosexuality.  相似文献   

嵌入性对咨询联盟网络的启示研究     

桑琰云 《图书馆工作与研究》2014,(10)

本文将网络嵌入性理论运用于咨询联盟网络中.从联盟网络的社会性、联盟资源的异质性和联盟网络的互惠学习性三个方面分析了嵌入性时咨询联盟研究的启示,指出咨询联盟网络中不同社会资本的嵌入、认同的嵌入、关系的嵌入、文化的嵌入会带来网络的平衡发展,认为鼓励馆员开通自己的虚拟社区、建立连锁董事关系网络、发展边界人、避免文化的“过嵌入”这些措施会全面发挥网络嵌入所带来连锁效应,指引咨询联盟网络服务创新发展.  相似文献