引文网络的主路径特征研究——以富勒烯领域为例     

樊志伟  韩芳芳  刘佳 《图书情报工作》2013,57(3):17

以富勒烯领域引文数据为样本,通过HistCite^TM生成不同规模与格式的引文网络,利用Pajek集成的三种主路径算法分析不同数据格式、不同网络规模的主路径组分与形态差异,运用曲线拟合方法探索主路径规模与主路径长度间的关系。结果表明:三种主路径算法结果没有显著差异,主路径长度与网络规模呈对数关系,主路径在网络规模约为总顶点数40%后趋于稳定。  相似文献   

穴位埋线对冠心病无症状心肌缺血、心肌缺血总负荷的影响     

刘卫平  邢之华  林展增  吴建琼 《河北北方学院学报(医学版)》2002,19(6):27-28

目的 :研究穴位埋线对无症状心肌缺血动态心电图的影响。方法 :以随机对照方法 ,观察治疗组 (穴位埋线 )和对照组 (普奈洛尔组 )对无症状心肌缺血的影响。结果 :两组治疗前后 ,在心肌缺血次数 ,心肌缺血持续时间 ,以及缺血总负荷方面有明显差异 ,P <0 .0 1,与对照组治疗后相比 ,无明显差异 ,P >0 .0 5。结论 :穴位埋线在改善无症状心肌缺血方面具肯定疗效。  相似文献   

深圳市中学生精神信仰调查研究   总被引：1，自引：0，他引：1  

刘旺 《上海教育科研》2006,(3):46-48

本文通过对深圳市中学生精神信仰的调查,揭示了深圳市中学生精神信仰的特点:精神信仰总体上积极健康;男生比女生更看重政治信仰和金钱物质,女生比男生具有更高的宗教信仰;对金钱物质和生命崇拜的信仰程度随年级升高而升高;独生子比非独生子女更重视生命的价值;团员比非团员的政治信仰程度更高; 非学生干部比学生干部具有更强的金钱物质信仰;学习成绩为上等的学生对国家民族的信仰程度相对较高, 学习成绩为下等的学生较为看重金钱物质。  相似文献   

李斯特《匈牙利狂想曲第十一首》演奏诠释     

刘莉 《山西广播电视大学学报》2008,13(2):96-97

在十九世纪的欧洲音乐生活中,李斯特占有特殊的地位,他的天才技艺和狂放气质征服了全世界.是十九世纪匈牙利音乐的杰出代表人物,他的音乐创作与匈牙利民族音乐息息相关,十九首《匈牙利狂想曲》便是他的"爱国的音乐",具有鲜明的民间音乐色彩.本文以李斯特的《匈牙利狂想曲第十一首》为研究对象,从李斯特的生活经历、创作背景等方面入手,以期对《匈牙利狂想曲第十一首》有一个全面透彻的理解,帮助我们更好地来诠释这首乐曲……  相似文献   

Doing Good and Feeling Good: The Experiences of Older Volunteers in a University Research Registry     

Chi Wai Lui  Helen Bartlett 《Educational gerontology》2013,39(6):553-569

This paper reports the findings from a study that explored the experiential knowledge of older volunteers who participated in university research projects. Findings suggest that most participants were very positive about their experiences, and they appreciated the opportunity to contribute to research into ageing issues. In terms of areas of improvement, many highlighted the need for researchers to provide feedback on research outcomes and to consider access and transport issues. The capacity for critical reflection amongst participants suggests the potential for the development of more responsive research as well as for cultivating partnerships with older people in future research activities.  相似文献   

独立大小便训练与幼儿发展     

陈斌斌  李燕  刘佩丽 《上海教育科研》2008,(6)

幼儿的独立大小便训练常被认为是儿童发展和家庭抚养的一个重要阶段.大小便训练的好坏不仅会影响今后儿童的排便和排尿问题,而且影响儿童的社会性发展,如社会技能的发展(如社会退缩)、自我概念、自主性的发展.在西方,关于幼儿的大小便训练的研究自上世纪三十年代开始逐步发展,随着医学的进步以及对大小便训练的逐步重视,到了七、八十年代关于幼儿大小便训练的理论发展逐步成熟,并在近十几年里不断的有新的关于儿科医学、护理学、教育学方面的研究成果的出现和补充.本文将综述西方学者对幼儿独立大小便训练模式与幼儿发展关系的研究,并在此基础上对我国幼儿教养实践进行反思.  相似文献   

消除学生心理紧张情绪 搞好体育教学   总被引：1，自引：0，他引：1  

刘志刚  沈昕平 《福建体育科技》2000,19(1):58-60

在体育教学中 ,由于教学内容、方法及客观环境的影响 ,学生在心理上要承受一定的压力 ,从而出现心理紧张情绪 ,产生心理障碍 ,这对体育教学产生不利影响 ,既影响学生技术动作的掌握和发挥 ,又会对学生身体健康产生不良的后果。只有让学生克服心理紧张情绪 ,消除心理障碍 ,了解动作技术环节 ,才能把体育教学搞好 ,使学生身心得到全面发展  相似文献   

Parents’ Perspective of the Impact of School Practices on the Functioning of Students with Special Educational Needs     

Ming Lui  Lan Yang 《International Journal of Disability, Development & Education》2017,64(6):624-643

Students with special educational needs (SEN) are at an elevated risk of psychological and behavioural dysfunctions. In this study, we conducted a survey of parents of students with SEN in Hong Kong to examine the impact of two school practices – learning support and school climate – on the psychological and behavioural functioning (PBF) of students with SEN. We also examined the mediating effects of social participation and academic engagement. Questionnaires were distributed to 586 parents in 139 primary schools. The results of structural equation modelling (SEM) analysis show that perceived school climate has a direct effect on perceived PBF, while perceived learning support does not. Perceived learning support has two indirect effects on perceived PBF, with perceived academic engagement or social participation as a mediator. The findings have implications for the effective use of educational resources to support the inclusive education of students with SEN.  相似文献   

Is Liberal Studies a political instrument in the secondary school curriculum? Lessons from the Umbrella Movement in post-colonial Hong Kong     

Dennis Chun-Lok Fung  Wai-Mei Lui 《Curriculum Journal》2017,28(2):158-175

This paper examines whether Hong Kong teachers and students perceived Liberal Studies and its ongoing curriculum review as politically driven during and after the Umbrella Movement, a large-scale civil disobedience campaign that took place in September 2014. The findings presented herein show that both groups disagreed with the claim that Liberal Studies was used as a political instrument to instigate students’ participation in the protest movement. Moreover, they also reveal that teachers have maintained their neutrality towards controversial issues related to politics during Liberal Studies lessons. Whilst the participating teachers and students considered the government's proposed reform of Liberal Studies to be politically motivated, they held differing attitudes towards the addition of more China-related elements to the subject. On the basis of these results, this paper analyses the potential role of Liberal Studies in the democratisation of local society. It also provides an indication of the curriculum's dynamic nature, explanation of students’ resistance to the review policy and suggestions for the subject's future development.  相似文献   

白细胞介素－1β对原代培养Leydig细胞白细胞介素－αmRNA基因表达的诱导作用     

王德利  童钟杭  吕志良 《科技通报》1994,(5)

最近发现睾丸中存在ＩＬ－Ｉ样物质，但其来源不明，作者用改良的Ｋｌｉｎｅｆｅｌｔｅｒ方法分离纯种大鼠睾丸Ｌｅｙｄｉｇ细胞，培养于含有人重组ＩＬ－１β的牛血清的ＤＥＭＥ／Ｆ１２培养基中，根据Ｃｈｏｍｃｚｙｎｓ－ｋｉ及Ｓａｃｄｃｈｉ方法，抽提全部细胞的ＲＮＡ，最后用Ｎｏｒｔｈｅｒｎ印迹分析发现ＩＬ－β导致Ｌｅｙｄｉｇ细胞中ＩＬ－１αｍＲＮＡ表达增加，且呈剂量依赖性，脂多糖亦刺激ＩＬ－１αｍＲＮＡ的表达，但佛波脂无此作用．结果表明Ｌｅｙｄｉｇ细胞为ＩＬ－Ｉ的主要来源，它具有自分泌和旁分泌效应．  相似文献