首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   631篇
  免费   14篇
  国内免费   6篇
教育   448篇
科学研究   57篇
各国文化   11篇
体育   51篇
综合类   14篇
文化理论   2篇
信息传播   68篇
  2023年   5篇
  2022年   8篇
  2021年   14篇
  2020年   25篇
  2019年   18篇
  2018年   37篇
  2017年   33篇
  2016年   21篇
  2015年   19篇
  2014年   27篇
  2013年   98篇
  2012年   43篇
  2011年   47篇
  2010年   36篇
  2009年   27篇
  2008年   38篇
  2007年   22篇
  2006年   21篇
  2005年   12篇
  2004年   11篇
  2003年   12篇
  2002年   9篇
  2001年   10篇
  2000年   13篇
  1999年   7篇
  1998年   3篇
  1997年   4篇
  1996年   5篇
  1995年   3篇
  1994年   2篇
  1993年   5篇
  1992年   2篇
  1991年   1篇
  1990年   3篇
  1988年   1篇
  1987年   1篇
  1986年   1篇
  1985年   2篇
  1980年   1篇
  1978年   2篇
  1975年   1篇
  1965年   1篇
排序方式: 共有651条查询结果,搜索用时 15 毫秒
531.
This study investigated whether gratitude and the ‘good-enough mindset’ added to the contribution of perfectionism in predicting life satisfaction in 245 Chinese highly achieving students in Hong Kong. Participants completed self-report questionnaires that included scales on life satisfaction, positive and negative perfectionism (perfectionistic striving and perfectionistic concerns), gratitude and the good-enough mindset. Measures of gratitude and the good-enough mindset explained a substantial amount of unique variance in the prediction of life satisfaction in addition to the contribution of age and measures on positive and negative perfectionism. Implications of the findings for integrating gratitude and the good-enough mindset in the development of effective positive interventions to cope with negative perfectionism in youth and adolescents are discussed.  相似文献   
532.
The present study aimed at identifying core components of reading instruction in Chinese within the framework of the tiered intervention model. A curriculum with four teaching components of cognitive-linguistic skills was implemented in a Program school for 3 years since Grade 1. The findings showed that the Tier 1 intervention was effective in enhancing the literacy and cognitive-linguistic skills of children in the Program school. The positive effects were maintained at the end of Grade 2. Progress in both word-level and text-level cognitive-linguistic skills predicted significantly progress in reading comprehension. Based on the present findings, the four core reading components in Chinese were proposed—oral language, morphological awareness, orthographic skills, and syntactic skills. Comparing the Big Five in English and the four core components in Chinese reflects different cognitive demands for reading diverse orthographies.  相似文献   
533.
This study explores whether the deficit approach to understanding youth, which has been widely critiqued in contemporary youth studies, could still be a dominant paradigm in an emerging curriculum which emphasises multiple-perspective thinking. The analysis compares the representations of youth in selected reference sources at different levels of curriculum-making of the Liberal Studies (LS) curriculum in Hong Kong. These includes: (1) the official website of the curriculum, (2) the textbooks and (3) the teachers' verbal accounts. The findings indicate that the curriculum contents at the institutional level (the LS official website) do not really favour a deficit representation of youth, but that the contents at the programme level and at the classroom level do intensify that deficit representation. The findings shed light on the discourse of youth in education regimes and inform future research.  相似文献   
534.
While experential learning has been increasingly explored and adopted by higher education institutions, few have researched the appropriate assessment methods that can be aligned with the learning outcomes of experential learning. A literature review on the diverse forms of assessment currently used for community service types of experiential learning in higher education is presented in this paper to review their appropriateness in assessing experential learning. The paper also describes the assessment framework of the University of Hong Kong Sichuan Reconstruction Community Service Project, which is incorporated into a multidisciplinary community service learning project. Feedback from students and teachers are reviewed to gauge their preferences towards these assessments, as well as their opinions on assigning academic credits to experential learning projects.  相似文献   
535.
一种结合改进OTSU法和改进遗传算法的图像分割方法   总被引:1,自引:0,他引:1  
为了自动确定图像分割的最佳阈值,提出了一种结合改进OTSU法和改进遗传算法的图像分割方法,即利用这种改进遗传算法对二维OTSU图像分割函数进行全局优化,该方法能够根据个体适应度大小和群体的分散程度自动调整遗传控制参数,从而能够在保持群体多样性的同时加快收敛速度,最后得到图像分割的最佳阈值,克服了传统遗传算法的收敛性差、易早熟等问题.在理论分析和仿真数据实验中,与二维OTUS图像分割法和基于基本遗传算法的图像分割法相比,使用该方法得出的阈值范围更加稳定,阈值计算时间有极大的降低,更能满足图像处理的实时性要求.  相似文献   
536.
陈朴 《收藏》2006,(12):120-121
各界各国王室历来重视王权标志,它们是王位与王权的有形物证,包括王冠、权杖、宝球、戒指及佩剑等,其中最具象征性的是至高无上的王冠。由于君主制度的衰落,王冠已失去以往的权威,目前,仅英国女王仍坚持在加冕典礼和议会开幕时佩戴王冠。各国王冠都是独一无二的国宝,一般由国库或博物馆珍藏。也有的则遭到毁坏或被拍卖。英国1938年印制了一套“著名王冠(Famous Crown)”烟画,全套25张,印制精美,从中可以鉴赏到100多年前一些欧洲国家的著名王冠。  相似文献   
537.
随着高职院校招生模式的改革推进,高职院校处于生源多元化的情境之中,教育教学面临着诸多挑战。本研究以四川交通职业技术学院为例,阐述了英语分层教学的必要性,分析了高职院校实施英语分层教学的理论依据与实践方案的设计,讨论了在实际教学过程中所产生的问题,并提出了相关的优化路径,旨在为英语分层教学在高职院校的推广和实施提供参考,让"因材施教"在英语教学中更好地得以实现。  相似文献   
538.
Conventional null hypothesis testing (NHT) is a very important tool if the ultimate goal is to find a difference or to reject a model. However, the purpose of structural equation modeling (SEM) is to identify a model and use it to account for the relationship among substantive variables. With the setup of NHT, a nonsignificant test statistic does not necessarily imply that the model is correctly specified or the size of misspecification is properly controlled. To overcome this problem, this article proposes to replace NHT by equivalence testing, the goal of which is to endorse a model under a null hypothesis rather than to reject it. Differences and similarities between equivalence testing and NHT are discussed, and new “T-size” terminology is introduced to convey the goodness of the current model under equivalence testing. Adjusted cutoff values of root mean square error of approximation (RMSEA) and comparative fit index (CFI) corresponding to those conventionally used in the literature are obtained to facilitate the understanding of T-size RMSEA and CFI. The single most notable property of equivalence testing is that it allows a researcher to confidently claim that the size of misspecification in the current model is below the T-size RMSEA or CFI, which gives SEM a desirable property to be a scientific methodology. R code for conducting equivalence testing is provided in an appendix.  相似文献   
539.
通过观察恒定负荷运动前后血液中葡萄糖、自由脂肪酸的变化和运动时主观感觉疲劳程度和RQ的变化,研究丙酮酸-肉碱或丙酮酸-肉碱-壳聚糖补充对机体运动时能量代谢和情绪的影响.结果提示:短期丙酮酸-肉碱补充能改善有氧运动中的主观感觉疲劳程度;促进安静时和有氧运动中脂肪的动员及提高脂肪供能的比例;添加壳聚糖后对以上效果没有影响,并且也不能改变高水平的血糖和FFA状况.  相似文献   
540.
The endangered medicinal herb,Changium smyrnioides can only be found in deciduous forest gaps within the middle to northern subtropical broad-leaved evergreen forest zone of China. The considerable plasticity of its shoot and root structure helps it to capture light more effectively in winter and early spring, and to adapt to the soil moisture conditions in its narrow habitat. Another medicinal plant,Anthriscus sylvestris, is of similar economic importance but commonly distributed widely. In contrast toC. smyrnioides, it has low structural plasticity. It is also specialized to adapt to the moist and sunny environment, where habitat, such as the banks of creeks and rivers, is abundant. Project supported by the National Basic Research Program (973) of China (No. G2000046805) and the National Natural Science Foundation of China (No. 39970058)  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号