全文获取类型
收费全文 | 35685篇 |
免费 | 569篇 |
国内免费 | 150篇 |
专业分类
教育 | 25303篇 |
科学研究 | 3783篇 |
各国文化 | 311篇 |
体育 | 2762篇 |
综合类 | 44篇 |
文化理论 | 299篇 |
信息传播 | 3902篇 |
出版年
2021年 | 307篇 |
2020年 | 534篇 |
2019年 | 748篇 |
2018年 | 1047篇 |
2017年 | 1079篇 |
2016年 | 1043篇 |
2015年 | 628篇 |
2014年 | 832篇 |
2013年 | 6542篇 |
2012年 | 815篇 |
2011年 | 895篇 |
2010年 | 672篇 |
2009年 | 654篇 |
2008年 | 734篇 |
2007年 | 731篇 |
2006年 | 672篇 |
2005年 | 621篇 |
2004年 | 588篇 |
2003年 | 554篇 |
2002年 | 590篇 |
2001年 | 630篇 |
2000年 | 613篇 |
1999年 | 619篇 |
1998年 | 341篇 |
1997年 | 362篇 |
1996年 | 418篇 |
1995年 | 367篇 |
1994年 | 325篇 |
1993年 | 320篇 |
1992年 | 484篇 |
1991年 | 480篇 |
1990年 | 522篇 |
1989年 | 523篇 |
1988年 | 470篇 |
1987年 | 431篇 |
1986年 | 436篇 |
1985年 | 528篇 |
1984年 | 457篇 |
1983年 | 428篇 |
1982年 | 360篇 |
1981年 | 356篇 |
1980年 | 310篇 |
1979年 | 451篇 |
1978年 | 382篇 |
1977年 | 357篇 |
1976年 | 295篇 |
1975年 | 245篇 |
1974年 | 259篇 |
1973年 | 265篇 |
1972年 | 219篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
Roberta A. Hibbard M.D. Janet Serwint M.D. Monica Connolly M.S.W. 《Child abuse & neglect》1987,11(4):513-519
Increased awareness of the problem of child sexual abuse has resulted in increasing numbers of children presenting to professionals for the evaluation of possible sexual victimization. A multidisciplinary project to develop professionals' knowledge and skills in the identification and evaluation of possible victims is described. The program focused on the child as a victim and emphasized developmental perspectives with regard to identification, interviewing children, the medical examination, and children in the legal system. Fifty-one medical and social work professionals from ten Indiana counties attended the program and responded to questionnaires about their experience and knowledge. Of 40 (78%) respondents, 63% had had no previous training in the medical evaluation for child sexual abuse. Child protective workers referred alleged victims primarily to the child's regular physician (37%) or emergency room (31%) for medical examination. Knowledge about child sexual abuse improved significantly at two weeks postsymposium (p = .001) and remained improved at six months postsymposium (p less than .02). These original participants have subsequently organized similar multidisciplinary programs in their local communities for medical, social, law enforcement, and legal professionals; thus, they have been "seeds" for further educational and cooperative efforts throughout the state. 相似文献
992.
993.
Intake interviews were analyzed from 365 adults molested as children (AMACs). The AMACs were entering treatment at the Child Sexual Abuse Treatment Program (San Jose, CA). This study presents data on the relationship of the perpetrator to the victim, and whether most molestations include intercourse. The majority of the perpetrators (62%) were either biological fathers or father-surrogates. Ninety-nine percent of the perpetrators were known to the victim; 97% were male. As in past studies, fondling from the waist down was the most common type of molestation, occurring in 92% of the cases. Forty-four percent of cases included intercourse. The present findings are compared with past research and are discussed in the context of common misconceptions associated with child sexual abuse. 相似文献
994.
995.
This paper reports results from a study exploring the multimedia search functionality of Chinese language search engines. Web searching in Chinese (Mandarin) is a growing research area and a technical challenge for popular commercial Web search engines. Few studies have been conducted on Chinese language search engines. We investigate two research questions: which Chinese language search engines provide multimedia searching, and what multimedia search functionalities are available in Chinese language Web search engines. Specifically, we examine each Web search engine’s (1) features permitting Chinese language multimedia searches, (2) extent of search personalization and user control of multimedia search variables, and (3) the relationships between Web search engines and their features in the Chinese context. Key findings show that Chinese language Web search engines offer limited multimedia search functionality, and general search engines provide a wider range of features than specialized multimedia search engines. Study results have implications for Chinese Web users, Website designers and Web search engine developers. 相似文献
996.
997.
998.
Campbell AM Zanta CA Heyer LJ Kittinger B Gabric KM Adler L Schulz B 《CBE life sciences education》2006,5(4):332-339
We have developed a wet lab DNA microarray simulation as part of a complete DNA microarray module for high school students. The wet lab simulation has been field tested with high school students in Illinois and Maryland as well as in workshops with high school teachers from across the nation. Instead of using DNA, our simulation is based on pH indicators, which offer many ideal teaching characteristics. The simulation requires no specialized equipment, is very inexpensive, is very reliable, and takes very little preparation time. Student and teacher assessment data indicate the simulation is popular with both groups, and students show significant learning gains. We include many resources with this publication, including all prelab introductory materials (e.g., a paper microarray activity), the student handouts, teachers notes, and pre- and postassessment tools. We did not test the simulation on other student populations, but based on teacher feedback, the simulation also may fit well in community college and in introductory and nonmajors' college biology curricula. 相似文献
999.
Weiqi Zhou Wenjuan Yu Yuguo Qian Lijian Han Steward T.A.Pickett Jing Wang Weifeng Li Zhiyun Ouyang 《国家科学评论(英文版)》2022,9(1):74-86
Environmental degradation caused by rapid urbanization is a pressing global issue.However,little is known about how urban changes operate and affect environment... 相似文献
1000.
English Proficiency,Identity, Anxiety,and Intergroup Attitudes: US Americans’ Perceptions of Chinese
Makiko Imamura Racheal A. Ruble Yan Bing Zhang 《Journal of Intercultural Communication Research》2016,45(6):526-539
Guided by the Common Ingroup Identity Model and Berry’s acculturation framework, this study examined the roles that perceptions of language proficiency, cultural identity, and communication anxiety had on intergroup attitudes and stereotypes in the American–Chinese contact context. Serial mediation analyses with 10,000 bootstrap samples revealed that perceived English proficiency of a Chinese contact had significant indirect effects on affective and behavioral attitudes toward Chinese through American participants’ perceptions of their contact’s host and home culture identification and communication anxiety. Perceived English proficiency had an indirect effect only on positive stereotypes through the Chinese contact’s perceived identification with home culture. 相似文献