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   2768篇
  免费   36篇
  国内免费   9篇
教育   1914篇
科学研究   269篇
各国文化   48篇
体育   214篇
综合类   2篇
文化理论   22篇
信息传播   344篇
  2023年   12篇
  2022年   26篇
  2021年   51篇
  2020年   102篇
  2019年   124篇
  2018年   148篇
  2017年   149篇
  2016年   135篇
  2015年   97篇
  2014年   131篇
  2013年   703篇
  2012年   101篇
  2011年   91篇
  2010年   94篇
  2009年   84篇
  2008年   81篇
  2007年   72篇
  2006年   68篇
  2005年   35篇
  2004年   32篇
  2003年   45篇
  2002年   33篇
  2001年   34篇
  2000年   31篇
  1999年   22篇
  1998年   17篇
  1997年   19篇
  1996年   15篇
  1995年   14篇
  1994年   10篇
  1993年   16篇
  1992年   11篇
  1991年   18篇
  1990年   8篇
  1989年   16篇
  1988年   8篇
  1987年   14篇
  1986年   7篇
  1985年   19篇
  1984年   10篇
  1983年   10篇
  1982年   14篇
  1981年   10篇
  1980年   8篇
  1979年   10篇
  1978年   9篇
  1977年   5篇
  1975年   5篇
  1973年   5篇
  1889年   3篇
排序方式: 共有2813条查询结果,搜索用时 17 毫秒
61.
This study employed qualitative data collection and analysis methods to investigate the influence of English as a foreign language teacher education programme on Korean teachers’ classroom teaching practices. Six in-service secondary-school teachers participated in semi-structured interviews. Thematic analysis was applied to the data collected from these interviews. Findings from the analysis included that: a) most of the teachers were dissatisfied with the largely theory-oriented pre-service teacher education programmes that they attended; b) a major source of influence on their teaching was their experience of in-service teacher training programmes with practical curricula; c) observation of other fellow teachers’ teaching had the strongest impact upon the teachers’ teaching practices; and d) the teachers’ low English proficiency and the washback effect of the Korea Scholastic Aptitude Test hindered the maintenance of the changes brought about by in-service teacher education programmes. This study ends with a discussion of the implications of these findings.  相似文献   
62.
全球化是否有助于教育公平?   总被引:3,自引:0,他引:3  
温明丽 《教育学报》2006,2(5):58-70
自20世纪末迄今,全球化在资本主义沃土的滋润下,已经蔚为世界的潮流。全球化一方面有现代性的特质,另一方面,也呈现后现代思潮的特征。教育在此全球化的不同样貌中,必须认清现代与后现代思潮的利弊得失,并批判地融合两者,方能确保教育公平和社会正义。从现代和后现代思维,厘清与批判全球化的趋势和内涵,并透过分析、诠释与批判方法,为教育在全球化趋势下,找到一条有助于促进教育迈向公平和正义的方向。  相似文献   
63.
64.
The purpose of the current study was to investigate a two-stage model in which parent-related stress and hopelessness each served as mediators of the relationship between perceived parental bonding and South Korean adolescent peer victimization. This study also examined whether the mediating relationships differed by the gender of parents and adolescents. A casual chain with three links and four sets of variables were analyzed using structural equation modeling. Data were collected from 800 adolescents attending 10 middle schools in the Busan region of South Korea. Results indicated that both maternal and paternal parental bonding were negatively associated with stress, stress was positively associated with hopelessness, and hopelessness was positively associated with South Korean adolescent peer victimization. Most importantly, the significant negative associations between both maternal and paternal parental bonding and peer victimization were mediated by both stress and hopelessness. Furthermore, gender differences in these relationships existed for both parents and adolescents. Limitations and implications to practice were discussed.  相似文献   
65.
66.
Lee AC  Ou Y  Fong D 《Child abuse & neglect》2003,27(11):1323-1329
OBJECTIVE: To describe a pattern of abusive head injury in a series of children older than 4 years of age. METHODS: A hospital chart review of abused children with skull fractures from 1999 to 2001 was carried out. The clinical features, social background, and subsequent outcome and management are described. RESULTS: An 11-year-old girl and a pair of brothers of ages 7 and 9 were identified. The girl was attacked with a hammer during sleep by her stepmother, who committed suicide shortly afterwards. After craniotomy and intensive care, the child survived her multiple depressed fractures, intracranial bleeding, and brain contusion. Two brothers from a second family were attacked from behind with a hammer by their biological father, who was subsequently found to have undiagnosed schizophrenia. A depressed occipital fracture, without intracranial injury, was found in each child. The elder brother also had metacarpal fractures. Both children recovered without surgical intervention. CONCLUSION: A pattern of abusive head injury was described in older children with depressed skull fractures from blunt injury. The abusing parents were seriously mentally disturbed, and the abusive acts closely resembled child homicide.  相似文献   
67.
Initial intervention processes for children with intellectual disabilities (IDs) largely focused on direct efforts to impact core cognitive and academic deficits associated with the diagnosis. Recent research on risk processes in families of children with ID, however, has influenced new developmental system approaches to early intervention. Recent risk and resilience processes are reviewed that connect stress, family process, and the high rates of behavioral problems in children with ID that have substantial influence on child and family outcomes. These models are linked to emerging evidence‐based intervention processes that focus on strategic parent skill training and mindfulness interventions that reduce parental stress and create indirect benefits for children's behavioral competencies. A family‐focused developmental systems approach (M. J. Guralnick, 2011) is emphasized.  相似文献   
68.
A number of numerical codes have been written for the problem of finding the circle of smallest radius in the Euclidean plane that encloses a finite set P of points, but these do not give much insight into the geometry of this circle. We investigate geometric properties of the minimal circle that may be useful in the theoretical analysis of applications. We show that a circle C enclosing P is minimal if and only if it is rigid in the sense that it cannot be translated while still enclosing P. We show that the center of the minimal circle is in the convex hull of P. We use this rigidity result and an analysis of the case of three points to find sharp estimates on the diameter of the minimal circle in terms of the diameter of P.  相似文献   
69.
国产十种乌头的染色体研究   总被引:1,自引:0,他引:1  
本文描述了我国产毛茛科乌头属的10个种的染色体数目和形态。  根据该属染色体基 数为8(x=8),可将这些种归为二倍体、四倍体、六倍体和八倍体种。  10种乌头的染色体在数目、大小、结构上表现出相关性。其中具根状茎而多年生的种多为二倍体,染色体形态较大,第3-7号多为近端着丝点(st)染色体, 具块茎而二年生的种多为多倍体,染色体形态较小,第3-7号多为近中着丝点(sm)染色体。染色体演化方向可能是二倍体→多倍体、大→ 小、st→sm。这进一步证明根状茎种较块茎种原始。根据染色体数目和形态,又可将这些种的染色体分为两类。这进一步支持了目前分类学上的牛扁亚属和乌头亚属的划分。本文还讨论了这些种的有关分类问题。  相似文献   
70.
Word sense disambiguation (WSD) is meant to assign the most appropriate sense to a polysemous word according to its context. We present a method for automatic WSD using only two resources: a raw text corpus and a machine-readable dictionary (MRD). The system learns the similarity matrix between word pairs from the unlabeled corpus, and it uses the vector representations of sense definitions from MRD, which are derived based on the similarity matrix. In order to disambiguate all occurrences of polysemous words in a sentence, the system separately constructs the acyclic weighted digraph (AWD) for every occurrence of polysemous words in a sentence. The AWD is structured based on consideration of the senses of context words which occur with a target word in a sentence. After building the AWD per each polysemous word, we can search the optimal path of the AWD using the Viterbi algorithm. We assign the most appropriate sense to the target word in sentences with the sense on the optimal path in the AWD. By experiments, our system shows 76.4% accuracy for the semantically ambiguous Korean words.  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