首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   401篇
  免费   3篇
教育   310篇
科学研究   7篇
各国文化   1篇
体育   38篇
信息传播   48篇
  2021年   3篇
  2020年   7篇
  2019年   8篇
  2018年   11篇
  2017年   8篇
  2016年   17篇
  2015年   10篇
  2014年   10篇
  2013年   110篇
  2012年   16篇
  2011年   6篇
  2010年   9篇
  2009年   8篇
  2008年   12篇
  2007年   14篇
  2006年   8篇
  2005年   10篇
  2004年   8篇
  2003年   10篇
  2002年   7篇
  2001年   3篇
  1999年   3篇
  1997年   3篇
  1996年   2篇
  1995年   5篇
  1994年   8篇
  1993年   3篇
  1992年   2篇
  1991年   6篇
  1990年   2篇
  1989年   3篇
  1988年   2篇
  1986年   3篇
  1985年   5篇
  1984年   2篇
  1983年   4篇
  1982年   3篇
  1981年   7篇
  1980年   5篇
  1977年   4篇
  1975年   2篇
  1974年   2篇
  1973年   2篇
  1972年   5篇
  1970年   2篇
  1969年   4篇
  1968年   2篇
  1967年   5篇
  1928年   1篇
  1927年   1篇
排序方式: 共有404条查询结果,搜索用时 15 毫秒
51.
Forty food-deprived cockerel chicks were tested individually in a straight runway containing a familiar food cup that moved when the chicks moved. The food cup always moved in the same direction as the chick: For 20 experimental chicks it moved twice as far as the chick; for 20 control chicks it moved half as far. In Lewis Carroll’s (1898/1926) picturesque terminology, the experimental chicks were tested in Alice’s “room through the looking-glass,” in which, in order to approach the food cup, they had to “walk the other way.” Although the control chicks performed well, the experimental chicks evinced the runway behavior that characterizes positive feedback: They persistently chased the food cup away. This means that the spatial polarity of visual feedback is critical and implies that an ordinary approach response is but an automatic (closed-loop) realization of an intended visual perception.  相似文献   
52.
ABSTRACT

In this paper, our purpose is to investigate policy informing texts and discourses referencing transgender equality and gender diversity in the Western Australian education system. Drawing on scholarship from transgender, queer and policy studies, we highlight the interplay of progressive and conservative forces affecting the Western Australian education system’s commitment to supporting transgender and gender non-binary students. Based on a Social Sciences and Humanities Research Council of Canada (SSHRC) project, the paper constructs a Western Australian case study, which threads together the critical examination of policy informing texts, qualitative interview data and media discourses surrounding public narratives, such as the Safe School Coalition Australia’s attempt to implement a school program, which builds awareness about gender and sexual diversity. Emerging through the material, discursive and spatial elements of locales and networks, our case study has the potential to deepen knowledge regarding the heuristic capacity of employing policyscape as an analytic category. In this vein, we draw attention to the possibilities and challenges for re-conceptualizing gender and providing trans-affirmative school spaces that promote equality.  相似文献   
53.
54.
This paper focuses on the Australian federal Parliamentary Inquiry into Boys’ Education, Boys: Getting it Right, which is shown to be an exemplary instance of recuperative masculinity politics. The paper demonstrates how, through a variety of rhetorical strategies, its anti‐feminist politics are masked and how the report works with essentialised differences between boys and girls. The argument is demonstrated through a focus on a number of the report’s recommendations, including the call for a recasting of current gender policy, the need for creating so‐called ‘boy‐friendly’ curricula, assessment and pedagogical practices, and for employment of more male teachers. The report draws on populist literature and submissions from the boys’ lobby, as well as practice‐oriented submissions to the neglect of theoretically oriented and (pro‐)feminist work. As such, the significance of the construction of masculinities to boys’ attachment to and performances in school is totally neglected, limiting the value of the report’s recommendations for improving schooling for both boys and girls.  相似文献   
55.
A hurdle-jump escape response was employed to assess the laboratory rat’s aversion or attraction to different types of conspecific odor. Odorant donor subjects received 112 runway acquisition trials on a continuous reward schedule followed by 32 extinction trials, 112 acquisition trials on a 50% schedule of reward and nonreward followed by 32 extinction trials, or 144 “neutral” trials with no reward in the alley. Different groups of test subjects escaped from odor excreted by odorant subjects on (a) nonrewarded acquisition and extinction trials, (b) rewarded trials during continuous reinforcement, (c) rewarded trials during partial reinforcement, or (d) neutral trials; others escaped from a clean box. The principal findings were: (1) significant aversion to “odor of nonreward” appeared after the donor odorants had received 12 exposures to reward; (2) production of odor of nonreward by odorant subjects changed as a function of training experience with reward; (3) after repeated exposure to odor of nonreward, the escape response habituated; (4) greater or different odor excretion in extinction resulted from subjects trained on a continuous reward schedule than on a partial reward schedule. Relationships of the data to frustration theory were discussed, assuming that inferred differences in production of odor reflect differences in frustration reaction.  相似文献   
56.
Comparative studies of attitudes in different countries have resulted in the claim that parents in the USA and England tend to have unrealistically positive views of their children's schools and academic performance. Low expectations, together with a belief in the importance of natural ability, it has been argued, lead to low standards and reduce striving to succeed. The present study builds upon earlier investigations of children's attitudes, beliefs and behaviours in Sunderland, Eastern Kentucky and St Petersburg by surveying parental perspectives. Findings from these three regions reinforce earlier findings about English and American complacency and the more demanding nature of the Russian context. In line with our earlier studies, and contrary to the suggestion of a number of writers, an emphasis upon effort, rather than ability, was a strong feature of the English and American responses, although it is pointed out that such beliefs may not actually result in high work rates. The paper concludes by suggesting that the important role of parents in instilling important attitudes and behaviours in their children is undermined by the current emphasis upon schools as fundamentally responsible for ensuring high levels of achievement.  相似文献   
57.
Thermodynamic principles are basic to an understanding of the complex fluxes of energy and information required to keep cells alive. These microscopic machines are nonequilibrium systems at the micron scale that are maintained in pseudo-steady-state conditions by very sophisticated processes. Therefore, several nonstandard concepts need to be taught to rationalize why these very ordered systems proliferate actively all over our planet in seeming contradiction to the second law of thermodynamics. We propose a model consisting of boxes with different shapes that contain small balls that are in constant motion due to a stream of air blowing from below. This is a simple macroscopic system that can be easily visualized by students and that can be understood as mimicking the behavior of a set of molecules exchanging energy. With such boxes, the basic concepts of entropy, enthalpy, and free energy can be taught while reinforcing a molecular understanding of the concepts and stressing the stochastic nature of the thermodynamic laws. In addition, time-related concepts, such as reaction rates and activation energy, can be readily visualized. Moreover, the boxes provide an intuitive way to introduce the role in cellular organization of "information" and Maxwell's demons operating under nonequilibrium conditions.  相似文献   
58.
59.
60.
This study examined whether the candidate-controlled public relations tools of political ads and candidate blogs were successful in influencing the issue and news agenda of the major television news networks during the 2004 presidential election. Data showed strong correlations between blogs and the media agenda. Advertisements did not correlate with the media agenda. Cross-lag analyses showed that the media set the candidates' agenda. The authors suggest intermedia agenda setting occurred as the media transferred their agenda to campaign blogs.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号