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   22454篇
  免费   26篇
  22480篇
  2021年   22篇
  2020年   22篇
  2019年   31篇
  2018年   3510篇
  2017年   2840篇
  2016年   2289篇
  2015年   229篇
  2014年   120篇
  2013年   325篇
  2012年   633篇
  2011年   2462篇
  2010年   2560篇
  2009年   1514篇
  2008年   1773篇
  2007年   2227篇
  2006年   95篇
  2005年   290篇
  2004年   220篇
  2003年   173篇
  2002年   119篇
  2001年   56篇
  2000年   78篇
  1999年   42篇
  1998年   57篇
  1997年   46篇
  1996年   32篇
  1995年   22篇
  1994年   35篇
  1993年   20篇
  1992年   29篇
  1991年   22篇
  1990年   30篇
  1989年   20篇
  1988年   23篇
  1987年   19篇
  1986年   20篇
  1985年   27篇
  1984年   26篇
  1983年   23篇
  1982年   32篇
  1981年   34篇
  1980年   25篇
  1979年   30篇
  1978年   19篇
  1977年   21篇
  1976年   18篇
  1975年   15篇
  1974年   14篇
  1973年   15篇
  1966年   14篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
901.
The management of water is a topic of great concern. Inadequate management may lead to water scarcity and ecological destruction, but also to an increase of catastrophic floods. With climate change, both water scarcity and the risk of flooding are likely to increase even further in the coming decades. This makes water management currently a highly dynamic field, in which experiments are made with new forms of policy making. In the current paper, a case study is presented in which different interest groups were invited for developing new water policy. The case was innovative in that stakeholders were invited to identify and frame the most urgent water issues, rather than asking them to reflect on possible solutions developed by the water authority itself. The case suggests that stakeholders can participate more effectively if their contribution is focused on underlying competing values rather than conflicting interests.  相似文献   
902.
This article deals with a modern disease of academic science that consists of an enormous increase in the number of scientific publications without a corresponding advance of knowledge. Findings are sliced as thin as salami and submitted to different journals to produce more papers. If we consider academic papers as a kind of scientific ‘currency’ that is backed by gold bullion in the central bank of ‘true’ science, then we are witnessing an article-inflation phenomenon, a scientometric bubble that is most harmful for science and promotes an unethical and antiscientific culture among researchers. The main problem behind the scenes is that the impact factor is used as a proxy for quality. Therefore, not only for convenience, but also based on ethical principles of scientific research, we adhere to the San Francisco Declaration on Research Assessment when it emphasizes “the need to eliminate the use of journal-based metrics in funding, appointment and promotion considerations; and the need to assess research on its own merits rather on the journal in which the research is published”. Our message is mainly addressed to the funding agencies and universities that award tenures or grants and manage research programmes, especially in developing countries. The message is also addressed to well-established scientists who have the power to change things when they participate in committees for grants and jobs.  相似文献   
903.
This paper aims to question anew the popular and supposedly self-evident affirmation of education, in its modern incarnation as in its historical notion. The “naive” questions suggest that we have recently taken for granted that education ought to be for the masses, that it ought to be upbringing, and that it is better than ignorance. Drawing on the tradition that calls such an understanding of education into question, the author shows that the hidden costs of disregarding such reflection end up, camouflaged and smuggled, taxing the current debates regarding generally accepted education strategies. The characteristic feeling of the currently accepted model of education being in chronic crisis is less a testament to an absence of alternative approaches than to a lack of thorough self-reflection.  相似文献   
904.
In this essay, the author joins a conversation started by Martin (Reclaiming the conversation: the ideal of the educated woman. Yale University Press, New Haven, 1985) regarding gender and education seeking to extend the conversation to address sexuality. To do so, the author brings a reading of the Marquis de Sade to challenge the emphasis on reproduction in education as it relates to gendered and sexual norms. The author, following Martin’s approach in Reclaiming the Conversation, reads one particular text of Sade’s—Philosophy in the Bedroom—to argue for queer possibilities that Sade brings to the conversation around gender and sexuality within twenty-first century education. The Marquis de Sade may viscerally seem an inappropriate choice to return to and use to join the conversation, but his novelic imagination incites complications in the conversation. Following in the footsteps of Martin’s re-reading of historic philosophical texts the author offers not only another layer of thinking about “female education,” but also opens up space for engaging gender and sexuality in the history and philosophy of education. As issues around gender and sexed bodies become ever more present and contested in educational discourses, does Sade continue the conversation in ways that corrupt the reproductive aims of education?  相似文献   
905.
Using a nationally representative longitudinal data set, the current study examines the link between colorism and educational attainment of Asian American young adults. Three levels of educational attainment are used as outcomes: high school diploma, some college and a Bachelor’s degree or higher. Independent variables include skin tone, ethnic origin, parental income and education, family structure, parental involvement, family social support and others. Given the fact that colorism affects genders disparately, the analyses are conducted separately for males and females. The findings suggest that, compared to their co-ethnics with light brown skin tone, Asian American males and females with white skin are more likely to be college educated. Conversely, the odds of getting a Bachelor’s degree or higher are significantly higher for Asian Americans with light skin tone than for their co-ethnics with dark brown skin tone. All in all, the findings point to the pattern of the inverse relationship between educational attainment and the darkness of skin tone.  相似文献   
906.
The present longitudinal study, based on existing theoretical tenets, explored a conceptual model that depicted four major orientations: optimism, self-efficacy, and academic well-being. An important question for consideration, in this case, involved the testing of different untested trajectories that could explain and predict individuals’ mastery-approach goal orientations. This research investigation, in particular, is of significance for its unexploratory nature, and its findings, we contend, would contribute to our understanding of individuals’ academic and learning patterns. Data were collected across six separate time points, and path analytical procedures were used to test the hypothesized relationships. MPlus 7.3 produced a number of notable findings, emphasizing mediating mechanisms and interesting trajectories, for example: (1) the impact of enactive learning experience on Time 1 optimism and Time 3 self-efficacy, (2) the positive impact of Time 1 optimism on Time 2 motivation towards learning, and on Time 3 self-efficacy, (3) the direct impact of Time 1 optimism on Time 6 mastery-approach goals, mediated by Time 4 optimism and then Time 5 motivation towards learning. This evidence, overall, is substantive in terms of making theoretical contributions, as well as informing sound pedagogical practices for consideration and implementation.  相似文献   
907.
Although previous research indicates that both employment and adult attachment style have an influence on academic achievement, the interaction of these two factors has not been clarified. The purpose of this study was to investigate the moderating effect of adult attachment style on the relationship between employment status and first semester academic achievement in higher education. A sample of 378 freshman college students answered a series of questionnaires (Academic Amotivation Inventory, the Relationship Questionnaire and demographic), and their high school averages and first semester academic results were obtained from the Registrar’s office. The Analysis of covariance showed that employment status (having employment vs. no employment) and adult attachment style of students (secure vs. dismissing) strongly interacted in predicting academic achievement (first semester average adjusted for high school average, perceived financial burden, and amotivation). More specifically, the first semester averages of secure students with or without employment, and that of dismissing students without employment was indistinguishable. However, dismissing students with employment had significantly lower first semester averages than the secure students. This study showed that dismissing students entering postsecondary education who also have employment are at greater risk of academic difficulties than students with a secure attachment style.  相似文献   
908.
909.
Brian Leahy 《Topoi》2016,35(1):83-91
Scalar implicatures arise when a speaker uses a logically weak alternative in a context where a logically stronger alternative was available. Presuppositional implicatures, as I call them, arise when a speaker uses a presuppositionally weak alternative when a presuppositionally stronger alternative was available. My goal is to give a detailed, working theory of presuppositional implicatures, and show that they are a special case of scalar implicatures. In doing so, I carefully contrast presuppositional implicatures with antipresuppositions. These two phenomena have been treated as closely related in the literature, but some differences have not been adequately appreciated. Antipresuppositions are observed when a presuppositionally weak alternative is infelicitously used in a context that satisfies the presupposition of a presuppositionally stronger alternative. Presuppositional implicatures arise when a presuppositionally weak alternative is felicitously used in a context that does not satisfy the presupposition of a presuppositionally stronger alternative, but where that stronger presupposition would have been accommodated. Attention to this difference reveals a shortcoming in Schlenker’s (Nat Lang Semant 20:391–429, 2012) theory of presuppositional implicature. This paper both identifies and remedies that shortcoming.  相似文献   
910.
When there are equally strong claimants for a scarce good, lotteries are often argued to be a fair method of allocation. This paper reproduces four of the views on the fairness of lotteries that have been presented in the literature: the distributive view; the preference view; the actual consent view; and the expressive view. It argues that these four views cannot offer plausible explanations for the fairness of lotteries. The distributive view is argued to be inadequate because, even though receiving expectations to a good is of value to the participants, this value cannot plausibly make a contribution to the satisfaction of a participant’s claim. Both the preference and actual consent views are argued to be implausible because they lead to accepting procedures as legitimate that fail to correspond with what a claim is. Finally, it is contended that the expressive view identifies a value that is relevant to respecting equal claimants, but that cannot plausibly be related to a procedure’s fairness. The paper concludes by maintaining that an equal treatment view can accept all the valid insights from these four views without needing to accept their untenable implications.  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