全文获取类型
收费全文 | 10192篇 |
免费 | 124篇 |
国内免费 | 122篇 |
专业分类
教育 | 6487篇 |
科学研究 | 1242篇 |
各国文化 | 94篇 |
体育 | 1646篇 |
综合类 | 21篇 |
文化理论 | 67篇 |
信息传播 | 881篇 |
出版年
2021年 | 81篇 |
2020年 | 156篇 |
2019年 | 204篇 |
2018年 | 285篇 |
2017年 | 285篇 |
2016年 | 264篇 |
2015年 | 185篇 |
2014年 | 237篇 |
2013年 | 1582篇 |
2012年 | 213篇 |
2011年 | 230篇 |
2010年 | 193篇 |
2009年 | 212篇 |
2008年 | 195篇 |
2007年 | 184篇 |
2006年 | 205篇 |
2005年 | 172篇 |
2004年 | 383篇 |
2003年 | 351篇 |
2002年 | 337篇 |
2001年 | 401篇 |
2000年 | 241篇 |
1999年 | 163篇 |
1998年 | 106篇 |
1997年 | 98篇 |
1996年 | 98篇 |
1995年 | 107篇 |
1994年 | 102篇 |
1993年 | 78篇 |
1992年 | 153篇 |
1991年 | 120篇 |
1990年 | 137篇 |
1989年 | 149篇 |
1988年 | 113篇 |
1987年 | 131篇 |
1986年 | 122篇 |
1985年 | 136篇 |
1984年 | 119篇 |
1983年 | 123篇 |
1982年 | 96篇 |
1981年 | 82篇 |
1980年 | 90篇 |
1979年 | 135篇 |
1978年 | 87篇 |
1977年 | 72篇 |
1976年 | 89篇 |
1975年 | 65篇 |
1974年 | 72篇 |
1973年 | 69篇 |
1971年 | 67篇 |
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
201.
OBJECTIVE: This study examined specific aspects of child sexual abuse in relation to symptom severity among hospitalized patients diagnosed with bulimia nervosa. METHOD: Participants were 45 hospitalized bulimic women who reported a history of child sexual abuse. Structured interviews were conducted in order to obtain detailed information regarding specific features of the abusive event(s). Participants also completed instruments that measured depression and eating pathology. RESULTS: There were no significant differences in severity of depression or eating disturbance among women reporting differing abusive experiences including intrafamilial versus extrafamilial abuse, abuse with or without the use of physical force, one versus multiple incidents, early abuse versus abuse occurring after age 14, contact versus noncontact abuse, disclosed versus undisclosed, and combined physical/sexual abuse versus sexual abuse alone. CONCLUSION: The specific characteristics of child sexual abuse are not related to the level of symptomatology for hospitalized bulimic patients. This study suggests that differences in the nature of the abuse may not be as important as the fact that the abuse occurred in the first place. 相似文献
202.
203.
JIŘI LAŽANSKÝ VLADIMÍR MAŘÍK OLGA ŠTĚPÁNKOVÁ 《European Journal of Engineering Education》1992,17(2):143-149
Both the origin and development of artificial intelligence (AI) are connected with the origin and development of computers. Computers play a very important role in engineering education. AI influences such disciplines like CAD, CASE, CAE, and others. The specific experience concerning AI education at a technical university has been gathered in this paper. There is stressed need of good balance between theoretical background and individual training with computers as well as importance of personal experience in solving practical AI. 相似文献
204.
P. J. Rogers 《Educational studies》1989,15(1):37-51
The use of ‘play’ as a means of teaching elementary mathematics is discussed. The games used are described and the underlying theory explained. Results obtained from work with over 150 children are presented and the case for ‘Playway’ argued in the light of these. 相似文献
205.
Catie A. Greene Amy E. Williams Pamela N. Harris Sterling P. Travis Sharon Y. Kim 《Counselor Education & Supervision》2016,55(3):216-232
The authors evaluated an unfolding case‐based approach to a practicum in counseling course infusing crisis, trauma, and disaster preparation for changes in students’ crisis self‐efficacy across a semester. The course, informed by constructivist‐developmental pedagogy and centered on the unfolding case, resulted in significant increases in students’ crisis self‐efficacy. 相似文献
206.
Pigeons' keypecking was reinforced by food on baseline schedules of multiple variable interval (VI) x VI x and on contrast schedules of multiple VI x VI y. Deprivation of food was varied by maintaining subjects at 75%, 85%, and 95% (+/- 2%) of their free-feeding weights. Positive and negative behavioral contrast were observed. The size of the contrast was not systematically altered by changes in deprivation. Positive and negative contrast were both larger later in the session than they were earlier. Within-session decreases in responding were steeper for the baseline than for the contrast schedules for positive contrast. Within-session decreases were steeper for the contrast than for the baseline schedules for negative contrast. These results were predicted by the idea that different amounts of habituation to the reinforcer during the baseline and contrast schedules contribute to behavioral contrast. The results show that contrast occurs under conditions that reduce the effect of the following component. The results support the assumption that positive and negative contrast are produced by symmetrical theoretical variables. 相似文献
207.
Meghan Moran 《The Journal of perinatal education》1999,8(4):19-26
Modesty may be a significant variable impacting breast- feeding outcomes in western cultures, yet this term has received minimal attention in the breastfeeding literature. An analysis of the concept of modesty was conducted to gain greater understanding of the potential impact of modesty on breastfeeding outcomes. Various uses of the term modesty and particularly modesty in the context of breastfeeding are discussed in this paper. The defining attributes of breastfeeding modesty are identified and examples are provided. Implications for research and clinical practice are suggested. 相似文献
208.
MICHAEL P. WILBUR JANICE ROBERTS-WILBUR GORDON M. HART JOSEPH R. MORRIS ROBERT L. BETZ 《Counselor Education & Supervision》1994,33(4):262-279
The article reports the pilot study results of a Structured Group Supervision (SGS) model. The structured model of group supervision seemed superior in comparison with “control” group supervision. 相似文献
209.
Marcia Eugenio-Gozalbo Raquel Pérez-López Juan-Carlos Tójar-Hurtado 《The Journal of environmental education》2020,51(3):246-255
ABSTRACTThe presence of learning gardens in Spain is growing, and the current scenario is highly diverse in relation to issues such as participatory models or purposes, among others. In the context of the 1st National Meeting on organic learning gardens, we convened eight expert practitioners in a focus group. Their discourse was analyzed through content analysis, after which four categories were selected for co-occurrence analyses. The most important questions for university garden-based practitioners in the country are presented, related to actors involved, functions that gardens fulfill, strengths of these educational resources, and requirements for their consolidation. 相似文献
210.
The role of vision was examined as infants prepared to grasp horizontally and vertically oriented rods. Hand orientation was measured prior to contact to determine if infants differentially oriented their hands relative to the object's orientation. Infants reached for rods under different lighting conditions. Three experiments are reported in which (1) sight of the hand was removed (N = 12), (2) sight of the object was removed near the end of the reach (N = 40, including 10 adults), and (3) sight of the object was removed prior to reach onset (N = 9). Infants differentially oriented their hand to a similar extent regardless of lighting condition and similar to control conditions in which they could see the rod and hand throughout the reach. In preparation for reaching, infants may use the current sight of the object's orientation, or the memory of it, to orient the hand for grasping; sight of the hand had no effect on hand orientation. 相似文献