全文获取类型
收费全文 | 1195篇 |
免费 | 27篇 |
专业分类
教育 | 927篇 |
科学研究 | 92篇 |
各国文化 | 13篇 |
体育 | 78篇 |
综合类 | 1篇 |
文化理论 | 3篇 |
信息传播 | 108篇 |
出版年
2023年 | 9篇 |
2021年 | 14篇 |
2020年 | 27篇 |
2019年 | 30篇 |
2018年 | 36篇 |
2017年 | 43篇 |
2016年 | 40篇 |
2015年 | 19篇 |
2014年 | 25篇 |
2013年 | 311篇 |
2012年 | 17篇 |
2011年 | 26篇 |
2010年 | 22篇 |
2009年 | 23篇 |
2008年 | 24篇 |
2007年 | 22篇 |
2006年 | 22篇 |
2005年 | 14篇 |
2004年 | 17篇 |
2003年 | 13篇 |
2002年 | 19篇 |
2001年 | 22篇 |
2000年 | 13篇 |
1999年 | 10篇 |
1998年 | 13篇 |
1997年 | 15篇 |
1996年 | 21篇 |
1995年 | 11篇 |
1994年 | 17篇 |
1993年 | 19篇 |
1992年 | 10篇 |
1991年 | 11篇 |
1990年 | 12篇 |
1989年 | 13篇 |
1988年 | 18篇 |
1987年 | 19篇 |
1986年 | 10篇 |
1985年 | 11篇 |
1984年 | 9篇 |
1983年 | 9篇 |
1982年 | 12篇 |
1981年 | 14篇 |
1980年 | 12篇 |
1976年 | 6篇 |
1974年 | 8篇 |
1973年 | 6篇 |
1971年 | 9篇 |
1970年 | 6篇 |
1969年 | 7篇 |
1968年 | 7篇 |
排序方式: 共有1222条查询结果,搜索用时 9 毫秒
71.
Emily Vardell Tanya Feddern-Bekcan Mary Moore 《Medical reference services quarterly》2013,32(3):283-294
SciVal Experts is a resource for finding experts and fostering collaboration. The tool creates researcher profiles with automatically updated publication and grant information and faculty-inputted curriculum vitae, more fully capturing a researcher's body of work. SciVal Experts indexes campus-based “experts” by research topic, allowing faculty to find potential research partners and mentors, furthering translational research opportunities and dissemination of knowledge. 相似文献
72.
Justin X. Nicoll Andrew J. Galpin Donald B. Thomason Christopher A. Moore 《European Journal of Sport Science》2017,17(9):1194-1202
Purpose: There is a paucity of research investigating the expression of mitogen-activated protein kinases (MAPK) in chronically trained (CT) athletes. Thus, it is unclear how MAPK may contribute to performance and muscle adaptation in CT subjects. The purpose of this study was to determine MAPK total protein, and phosphorylated expression of extracellular signal-regulated kinases 1 and 2 (ERK1/2), c-Jun N-terminal kinase (JNK), and p38-MAPK (p38) between untrained, and chronically trained runners. Methods: Tissue samples were analysed from sedentary (SED; n?=?5) controls and chronically trained runners (CT; n?=?5). Resting muscle biopsy samples were analysed for total-MAPK – and ratio of phosphorylated/total (p-MAPK) – ERK1/2, JNK, and p38-MAPK via western blotting. Mann–Whitney U tests and effect sizes were utilized to determine differences in total MAPK protein content and phosphorylation status between SED and CT subjects. Results: There was no difference in total-MAPK expression between SED and CT (p?>?.05). p-p38-MAPK tended to be greater for CT compared to SED (p?=?.07). There were moderate effect sizes of decreased pERK/total-ERK (d?=??0.69) and increased pJNK/total-JNK (d?=?0.54) in CT compared to SED. There was a positive correlation between p-p38-MAPK/total-MAPK and the percentage of type I fibres (r?=?0.73, p?=?.016). Conclusion: Contrary to previous studies, chronic endurance training does not greatly influence total MAPK protein expression in chronically trained runners. However, resting phosphorylation of p38-MAPK may contribute to enhanced oxidative metabolism at chronically trained levels. These alterations are likely involved in the different physiological adaptations that occur following long-term training or at highly competitive levels. 相似文献
73.
Effects of student versus staff tutoring on student learning in a problem-based, health sciences curriculum were studied. Academic achievement of 334 tutorial groups guided by staff tutors was compared with achievement of 400 groups guided by student tutors. In addition, students rated their tutor's performance on four behaviors considered critical to facilitating student learning. Overall, students guided by a staff tutor achieved somewhat better. In terms of practical significance, the difference was, however, fairly small. Staff tutors were rated as more knowledgeable and their contributions as more relevant. In addition, they asked stimulating questions to a larger extent. However, an interaction effect was found between the ratings and the year of study: Peer tutors displayed the supportive behaviors more extensively in the first year, whereas staff tutors' ratings were higher as the curriculum advanced. These results were interpreted in terms of the cognitive congruence framework.Parts of this article have been presented to the Annual Meeting of the American Educational Research Association, Atlanta, GA, April, 1993. 相似文献
74.
75.
Attachment and Adolescent Psychosocial Functioning 总被引:8,自引:1,他引:8
To explore the meaning and function of attachment organization during adolescence, its relation to multiple domains of psychosocial functioning was examined in a sample of 131 moderately at-risk adolescents. Attachment organization was assessed using the Adult Attachment Interview; multiple measures of functioning were obtained from parents, adolescents, and their peers. Security displayed in adolescents' organization of discourse about attachment experiences was related to competence with peers (as reported by peers), lower levels of internalizing behaviors (as reported by adolescents), and lower levels of deviant behavior (as reported by peers and by mothers). Preoccupation with attachment experiences, seen in angry or diffuse and unfocused discussion of attachment experiences, was linked to higher levels of both internalizing and deviant behaviors. These relations generally remained even when other attachment-related constructs that had been previously related to adolescent functioning were covaried in analyses. Results are interpreted as suggesting an important role for attachment organization in a wide array of aspects of adolescent psychosocial development. 相似文献
76.
University counseling center clients’ (N = 52) perceptions of precounseling functioning were highly correlated with their actual well‐being scores at intake. The magnitude of change based on perceptions of precounseling functioning to current well‐being was approximately double of what is found from the difference of actual precounseling well‐being to current well‐being scores. Retrospective methods for assessing precounseling functioning are best suited for comparison among clients or counseling processes. 相似文献
77.
Richard J. Viken Danny L. Moore John F. Knutson David J. Fordyce 《Learning & behavior》1982,10(2):135-140
The effects of isolation and handling on the reactivity of rats to two tactile stimuli were assessed in two experiments. In the first experiment, reactivity to more intense footshock was increased in rats raised in isolation but was not affected by handling by an experimenter. In the second experiment, increased reactivity to airpuff stimuli presented to the dorsal surface of isolation-reared rats was reduced by handling. The data suggest that the effects of handling on shock-motivated behaviors are not due to altered reactivity to shock and that the effect of housing or handling must be considered in behavioral tests in which reactivity to tactile stimulation might play a role as dependent or independent variables. 相似文献
78.
Constructivism claims to be a postepistemology that replaces 'traditional' concepts of knowledge. Supporters of constructivism have argued that progress requires that pre-service teachers be weaned off traditional approaches and that they should adopt constructivist views of knowledge. Constructivism appears to be gaining ground rapidly and should no longer be viewed as an exercise in radical thinking primarily aimed at generating innovative teaching. It has become an integral part of the pedagogic mainstream. Close examination of the theoretical foundations of constructivism, however, reveals that the basic assumptions of constructivism are flawed. Far from being a postepistemology, constructivism simply regresses to a pre-Renaissance mindset with theology replaced with a psychologism. Constructivists should be aware that the implications of constructivism for future generations may be both profound and non-benign. 相似文献
79.
Rusciano Frank Louis; Fiske-Rusciano Roberta 《Int. Journal of Public Opinion Research》1990,2(4):305-322
This paper presents a content analysis of the manner in whichworld opinion is used in stories and editorialsof two nations' major newspapers. The authors studied the InternationalHerald Tribune and the Frankfurter Allgemeine Zeitung for themonths of February, March, and April 1986 for articles whichcontained implicit or explicit references to world opinion.These refernces were studied using a pre-designed survey instrument,which analyzed several features of the term's usage. Topicsfor discussion included: (1) the various syonyms for world opinion;(2) the agenda for world opinion; (3) the timing of referenceto particular issues on the agenda; (4) the moral and pragmaticcomponents of world opinion; and (5) the link between worldopinion and the international isolation of nationsor individuals. The paper concludes by combining the resultsof the study into a preliminary definition of world opinion,based upon the common usage of this term. The definition comparesthe characteristics of world opinion and publicopinion, and discusses the possible ramifications ofunderstanding the concept in this manner. 相似文献
80.
Learning & Behavior - Five experiments were conducted to evaluate various aspects of stimulus preexposure effects on conditioned saccharin aversion in rats of three age groups: weanling... 相似文献