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   4637篇
  免费   590篇
  国内免费   519篇
  2024年   12篇
  2023年   94篇
  2022年   103篇
  2021年   150篇
  2020年   260篇
  2019年   256篇
  2018年   208篇
  2017年   287篇
  2016年   291篇
  2015年   181篇
  2014年   230篇
  2013年   713篇
  2012年   160篇
  2011年   190篇
  2010年   158篇
  2009年   223篇
  2008年   268篇
  2007年   233篇
  2006年   216篇
  2005年   196篇
  2004年   171篇
  2003年   150篇
  2002年   136篇
  2001年   103篇
  2000年   98篇
  1999年   88篇
  1998年   61篇
  1997年   55篇
  1996年   41篇
  1995年   43篇
  1994年   49篇
  1993年   34篇
  1992年   22篇
  1991年   42篇
  1990年   20篇
  1989年   22篇
  1988年   23篇
  1987年   14篇
  1986年   12篇
  1985年   17篇
  1984年   20篇
  1983年   8篇
  1982年   14篇
  1981年   7篇
  1980年   18篇
  1979年   15篇
  1978年   13篇
  1977年   12篇
  1976年   8篇
  1975年   1篇
排序方式: 共有5746条查询结果,搜索用时 15 毫秒
981.
Eva Erman 《Res Publica》2006,12(3):249-275
Within liberal democratic theory, ‘democratic accountability’ denotes an aggregative method for linking political decisions to citizens’ preferences through representative institutions. Could such a notion be transferred to the global context of human rights? Various obstacles seem to block such a transfer: there are no ‘world citizens’ as such; many people in need of human rights are not citizens of constitutional democratic states; and the aggregative methods that are supposed to sustain the link are often used in favour of nation-state strategic action rather than human rights. So what could accountability mean in relation to human rights? This article argues that discourse theory offers resources for approaching these problems and for rethinking a normative notion of accountability in relation to human rights. It is suggested that accountability should link political decisions to universal agreements through global rights institutions and that the link should be sustained by deliberative rather than aggregative procedures.  相似文献   
982.
This paper presents Automath encodings (which are also valid in LF/λP) of various kinds of foundations of mathematics. Then it compares these encodings according to their size, to find out which foundation is the simplest.

The systems analyzed in this way are two kinds of set theory (ZFC and NF), two systems based on Church's higher order logic (Isabelle/Pure and HOL), three kinds of type theory (the calculus of constructions, Luo's extended calculus of constructions, and Martin-Löf's predicative type theory) and one foundation based on category theory.

The conclusions of this paper are that the simplest system is type theory (the calculus of constructions), but that type theories that know about serious mathematics are not simple at all. In that case the set theories are the simplest. If one looks at the number of concepts needed to explain such a system, then higher order logic is the simplest, with twenty-five concepts. On the other side of the scale, category theory is relatively complex, as is Martin-Löf's type theory.

(The full Automath sources of the contexts described in this paper are one the web at http://www.cs.ru.nl/~freek/zfc-etc/.)  相似文献   

983.
冯源  苏彦捷  张莉 《心理科学》2006,29(3):757-760
关于人性善恶的问题一直有争议,本文从行为实验的角度对这一问题进行探讨。结果发现:3岁以前的儿童表现出人之初性本善的特征,对他人比较宽厚;3岁到4岁之间随着心理理论的增长,表现出道德水平下降,心理理论和道德水平两者之间出现交互作用。5岁以后的儿童由于心理理论的逐步完善,显现出越来越明确的“镜子行为”,即:谁对我好,我就对谁好;谁对我不好,我就对谁不好;原有的善性被外界恶性刺激掩蔽。  相似文献   
984.
This is a two-part paper: in the first one, a personal story serves as a conceptual prism through which I address the issue of how a queer analyst can be a problem for analytical psychology; in the second, I present some readings and images—mostly from decolonial feminisms—that have been of interest to me lately in my path to queer Jungian psychology, that is, to de-essentialize and de-individualize its theory and practice. By borrowing (and altering) the title from Gloria Anzaldúa's (1991/2009a) essay “To(o) queer the writer”, this paper explores some themes she has elaborated there on solidarity, theorization and ways of writing and reading from othered points of view. In dialogue with Donna Haraway's (2016) Staying with the Trouble and Ursula K. Le Guin's (1989/2000) The Carrier Bag Theory of Fiction, together with the imagery of bags, weaving and string figures game, this paper aims to explore the potential of what I have called “woven onto-epistemologies”. By imagining and developing this new condition of knowledge, other stories and theories in analytical psychology may have an opportunity to be told.  相似文献   
985.
Globally, the COVID-19 pandemic has impaired every aspect of life, especially causing much psychological damage—for instance, increasing the risk of suicide. Intense fear and anxiety are considered to play a central role in mental health problems. This study examined the psychological properties of the Japanese version of the Fear of COVID-19 Scale (FCV-19S) using classical test theory (CTT) and item response theory (IRT). Five hundred fifty participants aged 18–69 years and from across Japan completed questionnaires, including the Japanese FCV-19S, the Japanese Depression Anxiety Stress Scales-15 (DASS-15), and the Japanese version of the Kessler 6 (K6). CTT showed that each item of the Japanese FCV-19S had no ceiling and floor effect and was close to the normal distribution, and IRT revealed that each item had an appropriate parameter of discrimination and difficulty. Finally, the Japanese FCV-19S was shown to have an acceptable reliability and moderate good concurrent validity. Consequently, the Japanese FCV-19S has robust psychometric properties and can be useful for early detection of adults impacted by the COVID-19 pandemic.  相似文献   
986.
987.
Many researchers have tackled the question of how behavior is influenced by its outcomes. Some have adopted a nonmechanistic (functional) perspective that attempts to describe the influence of outcomes on behavior. Others have adopted a mechanistic (cognitive) perspective that attempts to explain the influence of outcomes on behavior. Orthogonal to this distinction, some have focused on the influence of outcomes that a behavior had in the past, whereas others also consider the influence of outcomes that a behavior might have in the future. In this article, we relate these different perspectives with the goal of reducing misunderstandings and fostering collaborations between researchers who adopt different perspectives on the common question of how behavior is influenced by its outcomes.  相似文献   
988.
Lent and Brown's (2006, 2008) social cognitive model of work well-being was tested in two samples of African college students, one from Angola (N = 241) and one from Mozambique (N = 425). Participants completed domain-specific measures of academic self-efficacy, environmental support, goal progress, and satisfaction, along with measures of global positive affect and life satisfaction. Path analyses indicated that the model fit the data well overall, both in the full sample and in separate sub-samples by country and gender. Contrary to expectations, however, self-efficacy predicted academic satisfaction only indirectly, via goal progress; and goal progress predicted life satisfaction only indirectly, via academic satisfaction. The predictors accounted for substantial portions of the variance in both academic domain satisfaction and life satisfaction. Implications for research and practice involving the social cognitive model are considered.  相似文献   
989.
The purpose of this study was to develop and validate a Japanese version of the Achievement Emotions Questionnaire – Elementary School (AEQ-ES), which assesses enjoyment, anxiety, and boredom experienced by elementary school students within the settings of attending class, doing homework, and taking tests. Japanese elementary school students (n = 863 for the first survey; n = 332 for the second survey) participated in the questionnaire survey. The results showed that the psychometric properties of the Japanese AEQ-ES were comparable to those of the original version. Moreover, the results showed that students' achievement emotions were associated with their control and value appraisals, as well as their academic motivation, learning strategies, academic performance, and support from teachers. These results indicated that the Japanese version of the AEQ-ES was a good measure of elementary school students' emotions and supported the propositions of the control–value theory of achievement emotions.  相似文献   
990.
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