全文获取类型
收费全文 | 1561篇 |
免费 | 22篇 |
国内免费 | 1篇 |
专业分类
教育 | 1159篇 |
科学研究 | 67篇 |
各国文化 | 26篇 |
体育 | 128篇 |
综合类 | 1篇 |
文化理论 | 11篇 |
信息传播 | 192篇 |
出版年
2022年 | 10篇 |
2021年 | 14篇 |
2020年 | 28篇 |
2019年 | 58篇 |
2018年 | 68篇 |
2017年 | 57篇 |
2016年 | 49篇 |
2015年 | 44篇 |
2014年 | 57篇 |
2013年 | 363篇 |
2012年 | 55篇 |
2011年 | 57篇 |
2010年 | 33篇 |
2009年 | 37篇 |
2008年 | 41篇 |
2007年 | 31篇 |
2006年 | 36篇 |
2005年 | 34篇 |
2004年 | 35篇 |
2003年 | 32篇 |
2002年 | 28篇 |
2001年 | 23篇 |
2000年 | 19篇 |
1999年 | 24篇 |
1998年 | 17篇 |
1997年 | 13篇 |
1996年 | 13篇 |
1995年 | 12篇 |
1994年 | 9篇 |
1993年 | 15篇 |
1992年 | 10篇 |
1991年 | 15篇 |
1990年 | 12篇 |
1989年 | 16篇 |
1988年 | 28篇 |
1987年 | 15篇 |
1986年 | 16篇 |
1985年 | 11篇 |
1984年 | 8篇 |
1982年 | 12篇 |
1981年 | 8篇 |
1980年 | 8篇 |
1979年 | 8篇 |
1977年 | 8篇 |
1976年 | 12篇 |
1974年 | 8篇 |
1973年 | 5篇 |
1972年 | 8篇 |
1970年 | 5篇 |
1968年 | 6篇 |
排序方式: 共有1584条查询结果,搜索用时 0 毫秒
11.
Three rats received unmodifiable tailshock at random intervals in a shuttlebox. In a continuous-choice situation, Ss could choose between an auditory signal immediately preceding or immediately following the tailshock. Over repeated daily 3-h sessions, each S acquired a spatial discrimination indicating a strong preference for the signal preceding tailshock. This preference continued undiminished through two successive reversals of the position associated with signaled shock. This demonstration precludes explanations of the preference-for-signaled-shock phenomenon based upon primary reinforcement value or acquired value of the signal, position preferences, and overt modification of the aversiveness of the reinforcer through such means as postural adjustments. An explanation of recent failures to obtain the preference-for-signaled-shock effect is offered. 相似文献
12.
In four Pavlovian conditioned lick-suppression experiments, rats had two conditioned stimuli (CSs X and A) independently paired with footshock, followed by pairings of a compound of A and X with the footshock. On subsequent tests with CS X, less conditioned suppression was observed than in control subjects that lacked the compound AX→footshock trials. Thisoverexpectation effect was reversed through posttraining extinction of CS A, a result consistent with both performance- and acquisition-focused models of retrospective revaluation. However, only performance-focused models could account for how posttraining increases or decreases in the A-footshock temporal interval attenuate the overexpectation effect. 相似文献
13.
Foster , John , L. (Editor ). (1977). Reluctant to Read? Edinburgh Reading Tests - Stages 1 and 4 - Godfrey Thomson Unit. Dubin , F. and Olshtain , E. (1977). Facilitating Language Learning. Skitt , Frank . (1978). Themes for Language Learning. 相似文献
14.
Noam Miller 《Learning & behavior》2018,46(1):5-6
Sasaki and Biro (2017, Nature Communications, 8, 15049) show that pairs of pigeons can increase the efficiency of their homing routes over several ‘generations’ in which pair members are gradually replaced by naïve birds. Their findings show that socially transmitted cumulative alterations of behavior are not unique to humans and suggest a way to examine potential mechanisms of cultural evolution. 相似文献
15.
Peter Brusilovsky Eduardo Calabrese Jozef Hvorecky Anatoly Kouchnirenko Philip Miller 《Education and Information Technologies》1997,2(1):65-83
Mini-languages are a visually intuitive, simple and powerful way to introduce students to programming. They are a good foundation for general computer science instruction, provide insight into programming for the general population, and teach algorithmic thinking. The goal of the paper is to provide an extensive review of the mini-language approach to teaching programming. For different audiences and in different countries, the authors have extensive experience in design and application of mini-languages. We outline the problems that motivate the application of this approach, present a brief history, review several existing mini-languages, and provide discussion of lessons learned. In particular, we discuss how to choose a mini-language for a particular group of students and list some requirements for a successful application of a mini- language. We conclude with a discussion of possible future directions of the mini-language approach development 相似文献
16.
Aaron L. Wallis David P. Gretz Jeffrey A. Rings Kiersten M. Eberle 《Journal of College Counseling》2019,22(2):125-137
This article examines the relationship between marijuana use and anxiety symptoms among college students, with a secondary focus on marijuana use and grade point average (GPA). A secondary analysis was conducted on data obtained from the American College Health Association–National College Health Assessment. Results indicated that marijuana use was negatively associated with GPA among students with current anxiety and no formal treatment. The relationships between these variables may be more complex than previously thought. 相似文献
17.
18.
Klingner Stephan Miller Mihail Becker Michael Schumacher Frank 《Journal of Cultural Economics》2021,45(4):633-670
Journal of Cultural Economics - In the competitive, increasingly international music business, publishers are developing new ways to increase effectiveness and efficiency of the monetization of the... 相似文献
19.
20.