中频电源故障分析及维修     

褚晓虹 《中国现代教育装备》2011,(5):23-26

介绍了中频电源的工作原理,分析了几种中频电源中常见的故障,并以实例阐述了电源故障的处理方法和维修经验。  相似文献   

大气污染控制工程创新性实验的探索与思考     

朱玲  王建宏  陈家庆  初庆东  梁存珍 《中国现代教育装备》2011,(7):54-55

结合本校＂培养高级应用型人才＂的办学宗旨和环境工程专业的办学理念,从提高学生素质和创新能力出发,就大气污染控制工程课程创新性实验的经验和体会进行了总结。  相似文献   

论文学     

杨矗 《山西大学师范学院学报》2011,(4):1-10

文学是个非常古老的精神活动、精神形式,但人们对它既熟悉又陌生,熟知却未必真知。加上西方20世纪80年代发生了文学的＂文化转向＂后,文学的疆界变得无限开阔,而其自身的界定也面临空前的危机。因此,对＂文学是什么＂的回答就成了一个迫切的学术问题。而此前的＂形象论＂、＂表现论＂和＂审美意识形态论＂文学观都存在着严重不足,故而需要另辟蹊径,再进行新的界定。新的结论是：从其本源上看,文学是一种高级的魅态文化形式;从其历史面貌上看,文学是个历史性的家族,表现为文学观、特征论、形式定位、流派形态,同时还呈现为杂化和纯化的周期性变奏;从本质的抽象定义看,文学则是象征性的语言艺术,它不以科学和实用为目的,而以想象性超越和诗性的解放为旨归。中国当代文学的致命危机就是＂象征性＂传统谱系的断裂。  相似文献   

Banach空间中序压缩映射方程组的不动点定理     

刘春晗  初雪 《山东教育学院学报》2011,26(3):11-14

在Banach空间中引入了几种按序压缩的压缩型映射,用半序的方法讨论了一类非线性映射方程组的不动点的存在性,并推广了相应定理.  相似文献   

新媒体对高校思想政治教育的影响与应对   总被引：2，自引：0，他引：2  

沈楚 《湖州师范学院学报》2011,33(5):112-115,137

新媒体对于当代大学生来说已不再仅仅是一种工具,而是形成了一种环境。本文分析了新媒体环境下高校思想政治教育存在的困境及其给高校思想政治教育带来的机遇,提出要从构筑新媒体教育平台、创新思想政治教育话语、提升大学生新媒体素养、加强思想政治教育工作者队伍建设等方面探索大学生思想政治教育的新路径。  相似文献   

现代汉语二合复句中分句语气异类组配的倾向性研究     

万光荣  储泽祥 《暨南大学华文学院学报》2011,(4):64-71

现代汉语二合复句内分句语气同类组配是主体,异类组配是次要的。前后分句语气异类组配的使用频率具有一定的倾向性：陈述与疑问／祈使／感叹的组配〉疑问／祈使／感叹之间的两两组配;陈述＋疑问／祈使／感叹〉疑问／祈使／感叹＋陈述。陈述语气与疑问／祈使／感叹共享特征的数量都多于疑问、祈使、感叹两两语气之间共享特征的数量,因此前者是优势组配。疑问／祈使／感叹居前时通常要满足三个条件,居后时不受此限制,因此疑问／祈使／感叹居后是优势组配。  相似文献   

Understanding aims and values of science: developments in the junior cycle specifications on nature of science and pre-service science teachers’ views in Ireland     

Regina Kelly  Sibel Erduran 《Irish Educational Studies》2019,38(1):43-70

Irish science education is aiming to develop post-primary students’ knowledge of and about science through the introduction of ‘nature of science’ (NOS) in the new junior cycle science specification. This study aimed to investigate pre-service science teachers’ views about a particular aspect of NOS, namely the aims and values of science. Aims and values in relation to science can be considered from epistemic, cognitive, cultural, social, political, moral and ethical perspectives. In this paper, we focus on the epistemic, cognitive and social aims and values of science to provide a broad overview and investigate pre-service science teachers’ understanding of them. Qualitative methods are used to highlight two case studies that provide an in-depth record of how pre-service science teachers interpret aims and values of science. Although the sample is limited in terms of its generalisability to pre-service teacher education at large, the study provides a framework for (a) what to target and investigate about NOS in science education, particularly about aims and values of science, and (b) how pre-service science teachers are likely to make sense of such relatively new curricular goals. Implications for pre-service science teacher education are discussed.  相似文献   

Students’ Reflections on Their Field Practicum: An Analysis of BSW Student Narratives     

Qiang Chen  Regina M. Russell 《Journal of Teaching in Social Work》2019,39(1):60-74

This qualitative study was undertaken to explore what undergraduate students reflect on during their learning to practice social work in the field. Reflection is essential in the social work field practicum where students learn the practice of social work by doing. Seventeen BSW students’ final field practicum learning papers are analyzed. Four themes emerge that highlight the content of their reflections: situations of uncertainty, opportunities for application, tensions in action, and confrontations with others. This article presents in detail these 4 themes. Discussion includes suggestions for helping students better engage in reflective learning.  相似文献   

Convergent genomic signatures of high-altitude adaptation among domestic mammals     

Dong-Dong Wu  Cui-Ping Yang  Ming-Shan Wang  Kun-Zhe Dong  Da-Wei Yan  Zi-Qian Hao  Song-Qing Fan  Shu-Zhou Chu  Qiu-Shuo Shen  Li-Ping Jiang  Yan Li  Lin Zeng  He-Qun Liu  Hai-Bing Xie  Yun-Fei Ma  Xiao-Yan Kong  Shu-Li Yang  Xin-Xing Dong  Ali Esmailizadeh  David M Irwin  Xiao Xiao  Ming Li  Yang Dong  Wen Wang  Peng Shi  Hai-Peng Li  Yue-Hui Ma  Xiao Gou  Yong-Bin Chen  Ya-Ping Zhang 《国家科学评论(英文版)》2020,7(6):952

Abundant and diverse domestic mammals living on the Tibetan Plateau provide useful materials for investigating adaptive evolution and genetic convergence. Here, we used 327 genomes from horses, sheep, goats, cattle, pigs and dogs living at both high and low altitudes, including 73 genomes generated for this study, to disentangle the genetic mechanisms underlying local adaptation of domestic mammals. Although molecular convergence is comparatively rare at the DNA sequence level, we found convergent signature of positive selection at the gene level, particularly the EPAS1 gene in these Tibetan domestic mammals. We also reported a potential function in response to hypoxia for the gene C10orf67, which underwent positive selection in three of the domestic mammals. Our data provide an insight into adaptive evolution of high-altitude domestic mammals, and should facilitate the search for additional novel genes involved in the hypoxia response pathway.  相似文献   

信息时代译者的读者立场     

褚雅芸 《黄山学院学报》2006,8(4):135-137

在信息时代,翻译更应强调译者的“读者立场”。特别是在最能反应时代脉搏跳动的网络、多媒体、新闻报刊及广告等文体的翻译中,译者要站在读者的立场上,调整翻译策略,实现翻译目的。  相似文献