全文获取类型
收费全文 | 7716篇 |
免费 | 122篇 |
国内免费 | 22篇 |
专业分类
教育 | 5418篇 |
科学研究 | 776篇 |
各国文化 | 52篇 |
体育 | 769篇 |
综合类 | 6篇 |
文化理论 | 94篇 |
信息传播 | 745篇 |
出版年
2023年 | 53篇 |
2022年 | 80篇 |
2021年 | 111篇 |
2020年 | 197篇 |
2019年 | 288篇 |
2018年 | 374篇 |
2017年 | 407篇 |
2016年 | 313篇 |
2015年 | 217篇 |
2014年 | 255篇 |
2013年 | 1370篇 |
2012年 | 240篇 |
2011年 | 208篇 |
2010年 | 193篇 |
2009年 | 175篇 |
2008年 | 173篇 |
2007年 | 187篇 |
2006年 | 161篇 |
2005年 | 115篇 |
2004年 | 116篇 |
2003年 | 120篇 |
2002年 | 90篇 |
2001年 | 127篇 |
2000年 | 150篇 |
1999年 | 111篇 |
1998年 | 94篇 |
1997年 | 78篇 |
1996年 | 87篇 |
1995年 | 60篇 |
1994年 | 66篇 |
1993年 | 48篇 |
1992年 | 84篇 |
1991年 | 82篇 |
1990年 | 73篇 |
1989年 | 80篇 |
1988年 | 91篇 |
1987年 | 71篇 |
1986年 | 84篇 |
1985年 | 75篇 |
1984年 | 63篇 |
1983年 | 75篇 |
1982年 | 62篇 |
1981年 | 46篇 |
1979年 | 59篇 |
1978年 | 55篇 |
1977年 | 42篇 |
1976年 | 48篇 |
1975年 | 39篇 |
1974年 | 39篇 |
1973年 | 36篇 |
排序方式: 共有7860条查询结果,搜索用时 15 毫秒
101.
For many years now, most countries of the world have increasingly valued the headteacher as a powerful force in facilitating school and staff development. Such recognition has resulted in widespread training programmes—even in the poorest countries. In Spain, however, there has been, until very recently, considerable ambiguity over the role of the headteacher. This uncertainty is manifested in the appointment system of headteachers and the lack of commitment to training. This paper seeks to show the reasons for this situation, through an evaluation of recent legislation, the impact of Franco's legacy on education and the current preoccupation with democratic government at all levels. The paper highlights important changes of attitude towards the role of the head now taking place, mainly at local levels, and encourages the government to ensure that examples of effective training, emanating from these ideological shifts, are recognised and contained within national programmes. 相似文献
102.
OBJECTIVE: This study had two aims: First to examine psychosocial correlates of child maltreatment risk, and second to assess the validity of the CAP Inventory (Milner, 1986) with multiply disadvantaged teenage mothers. METHOD: Participants were 75 adolescent mothers who were wards of the Illinois child protection system. Mothers (aged 14-18) and infants participated in home-based psychosocial assessment of personal and parenting functioning. Group comparisons examined differences for mothers with elevated versus normal versus invalid CAP scores due to faking good. RESULTS: Findings indicated that abuse risk groups differed on emotional distress, social support satisfaction, reading achievement, and years of education, but not on parenting beliefs or quality of child stimulation. Differences favored the normal over the elevated risk group in all significant comparisons, whereas mothers with elevated faking good differed from normals only in lower reading achievement. Multiple regression analysis highlighted emotional distress, support dissatisfaction, and low achievement as significant predictors of greater abuse risk. CONCLUSIONS: Despite sharing multiple disadvantages, adolescent wards are a heterogeneous group who show different levels of psychosocial functioning corresponding to levels of child maltreatment risk. The findings provide support for the concurrent validity and clinical applicability of the CAP Inventory with disadvantaged teenage mothers. 相似文献
103.
104.
Frank N. Dempster 《Educational Psychology Review》2002,14(4):413-423
105.
Patrick Johnson Cassandra N. Nichols Walter C. Buboltz Brian Riedesel 《Journal of College Counseling》2002,5(1):4-14
To assess the impact of a holistic career and life planning course on college students, the authors asked 209 students in treatment and control groups to complete measures of career development. Results indicate that the course significantly increases vocational identity and career decision‐making self‐efficacy and decreases career indecision. 相似文献
106.
The Urban Review - The decision to rescind Deferred Action for Childhood Arrivals (DACA) will have major repercussions amongst beneficiaries, especially in terms of employment. One of the sectors... 相似文献
107.
In this study, the reading comprehension of deaf children and adolescents in the Netherlands is examined along with their
word identification. The reading comprehension of 464 deaf students and the word identification of 504 deaf students between
6 and 20 years of age was examined. The results show the reading comprehension scores of deaf children to be far below the
scores of hearing children. On average, the deaf subjects scored at a level equivalent to a hearing child in the first grade.
The word identification scores of the deaf children, however, were almost equivalent to the scores of hearing children. Although
reading comprehension and word identification appear to be related, this relation does not completely explain the comprehension
difficulties encountered by deaf children. Additional factors are required to explain deaf children’s difficulties with reading
comprehension. 相似文献
108.
In this article we derive the distribution, mean and variance of the number of cycles in a randomly selected permutation of the first n integers. 相似文献
109.
N. R. Krishnaswamy 《Resonance》1996,1(2):40-46
Chemical methods to determine the conformations and absolute configurations of menthol, a cyclohexane derivative with 3 chiral centres, are described. 相似文献
110.
N R Krishnaswamy 《Resonance》1996,1(7):23-30
Some interesting examples of the linkage between the structure and biological function of secondary metabolites in plants and animals are described. 相似文献