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   283篇
  免费   52篇
  国内免费   29篇
  2024年   1篇
  2023年   4篇
  2022年   3篇
  2021年   8篇
  2020年   9篇
  2019年   13篇
  2018年   15篇
  2017年   17篇
  2016年   19篇
  2015年   4篇
  2014年   24篇
  2013年   39篇
  2012年   5篇
  2011年   14篇
  2010年   9篇
  2009年   9篇
  2008年   12篇
  2007年   12篇
  2006年   10篇
  2005年   20篇
  2004年   17篇
  2003年   11篇
  2002年   10篇
  2001年   7篇
  2000年   9篇
  1999年   9篇
  1998年   4篇
  1997年   7篇
  1996年   2篇
  1994年   1篇
  1993年   2篇
  1992年   1篇
  1991年   4篇
  1990年   2篇
  1989年   2篇
  1988年   1篇
  1987年   1篇
  1986年   3篇
  1985年   2篇
  1983年   3篇
  1982年   2篇
  1981年   3篇
  1980年   2篇
  1979年   2篇
  1978年   5篇
  1976年   2篇
  1975年   3篇
排序方式: 共有364条查询结果,搜索用时 526 毫秒
231.
Power hierarchies are an essential aspect of social organization, create stability and social order, and provide individuals with incentives to climb the hierarchical ladder. Extending previous work on power and creativity, we put forward that this relationship critically depends on both the stability of the power hierarchy and the relevance of creative efforts to power. Across three experiments, we show that when power positions are unstable, low power individuals are more flexible thinkers, are less avoidant and process information more globally. Consequently, they achieve more creative insights, especially when being creative is relevant to power. As such, when the power hierarchy is unstable, those lacking power hold the power to creativity.  相似文献   
232.
道咸以来,考据学渐衰,《管子》研究也随之进入了平缓时期。生活于清末的学者孙诒让,在《管子》研究史上承前启后,乃清末考据学之杰出者。他的《札迻》引经据典,校勘辨疑,极有乾嘉之遗风。特别是其中的《管子》部分,充分体现其学术思想,无论内容还是特色,很有典型性。后世学者校读《管子》,多以不同版本对勘,再参以前人之成果,注重多重证据,就是受了孙诒让《管子》研究的影响。  相似文献   
233.
The outcomes of health interventions are co‐constructed through negotiation between the competing knowledges of different stakeholders. In such a context, local implementing partners – who mediate between international donors/programme managers and local beneficiary communities – have a critical ‘knowledge brokering’ role to play. With appropriate support, they can facilitate integration of internationally established knowledge with local beliefs and practices in ways that support health‐enhancing behaviour change. This paper focuses on the local field officers of an HIV prevention programme with Cambodian military couples. The paper asks: (1) what are the outcomes of knowledge encounters between international organizations and local field officers, as expressed in field officers' interpretation of programme goals, strategies and messages? (2) To what extent does the intervention context support the field officers' knowledge brokering efforts? Data collected includes semi‐structured interviews, observations of programme meetings and activities, and textual materials. The findings demonstrate that field officers privilege international knowledge, particularly in interactions with international manager–partners. However, in the field, they both hybridize programme messages and struggle to resolve dilemmas provoked by conflicting international and local knowledges. Material and symbolic asymmetries within the intervention context are shown to undermine their knowledge brokering efforts, as field officers attempt to claim identities and futures as health development professionals. Implications for programme practices and accountability systems are discussed. Copyright © 2010 John Wiley & Sons, Ltd.  相似文献   
234.
In order to better understand decision maker’s perceptions of the importance of attributes, Goldstein (1990) differentiates between global and local interpretations of attribute importance. While the appreciation for the distinction is growing, research on the relationship between measures of global and local importance is inconclusive. We believe that these inconclusive findings are caused by operationalizing global attribute importance with single-point measures that implicitly assume that the global interpretation of attribute importance linearly depends on the relevant range of context-specific attribute levels. To address this, we propose to operationalize the global interpretation of attribute importance by estimating decision makers’ attribute-value functions. Two empirical studies demonstrate that the shape of attribute-value functions changes from concave to convex with global attribute importance. Furthermore, the steepness of these functions increases with global attribute importance while the diminishing sensitivity decreases. Finally, it is demonstrated that the inconclusive findings about the relationship between common, single-point measures of global and local attribute importance is driven by non-linearities in decision makers’ attribute-value functions. The results suggest great promise for future research on using decision makers’ attribute-value functions for measuring the importance of attributes.  相似文献   
235.
梁启超是清末民初的著名学者,一身兼有旧学和新学影响,在《管子》研究上也有所建树。他的《管子》研究,正处于变法维新时期,他以今文经学的宗旨为指导思想,通过对中西方制度等方面的对比,试图找到改变中国命运的一剂良方。《管子》是礼法并重、制度以刚柔相济为要,故而十分符合梁启超的初衷。他结合自己的学术研究,通过《管子》书来评价管仲,并突显了《管子》的经济与法治思想,这是其《管子》研究的特色,并在《管子》真伪的讨论、义理的研究和管子形象的提升上对后世产生深远的影响。  相似文献   
236.
以群体偏爱的IAT测验为实验材料,结合社会支持和学校适应问卷,考察初中流动儿童在内隐群体偏爱、社会支持上与本地儿童之间的差异,并探讨这两种变量对流动儿童学校适应的影响.结果表明:(1)流动儿童存在内隐外群体偏爱,对自身所属群体表现出内隐的消极认同;本地儿童存在内隐内群体偏爱,对流动儿童具有内隐的消极认知;(2)流动儿童在父亲、教师以及同性朋友的社会支持上显著差于本地儿童;(3)在对流动儿童学校适应的影响上,社会支持的主效应显著,内隐群体偏爱和社会支持的交互作用显著;高内隐群体偏爱组中,高社会支持流动儿童的学校适应优于低社会支持儿童.  相似文献   
237.
Evangelical Christians–Baptists (ECBs) are a prominent denomination in contemporary Ukraine. They survived persecution by Soviet state atheism and are meeting the challenges of postcommunist freedom. They provide good ground for a case study on how religious communities preserve their collective memories and identities when times and conditions change. In this paper, based on various sources produced by churches and religious organisations, I analyse the ways in which ECBs maintain and reflect upon their collective memories and reinvent their traditions. Particularly I focus on historical narratives and commemorations. I argue that the ECBs develop their collective memories in transnational, local and personal perspectives. They are eager to see the history of their community as an inalienable part of the national history of Ukraine, but also consider themselves as both rooted in Russian culture and heirs of a European Protestant tradition. The main values in the core of their memory discourse are holiness, spirituality, suffering for faith and survival of the community in a hostile society. Celebrations of faith heroes and martyrs are especially popular among those who belong to the former underground wing of this denomination. A more recent trend is the celebration of the history of local congregations. As ECBs perceive threats to their traditional way of life from the West and the national liberalism of today, they become more fundamentalist and persistent in its preservation and protection. Ultimately, in order to defend their cultural space from ‘immoral’ influences, they have become more politically active and have contributed to conservative and anti-liberal agendas on the national level in Ukraine.  相似文献   
238.
Abstract

Fluorescence transitions in LiNdP4O12: 4 F3/24I9/2 (0·90μm), 4F3/24I11/2 (1·05μm), 4F3/24I13/2 (1·32μm), 4F3/24I15/2 (1·77μm), and in LiErYP4O12: 4S3/24I11/2 (1·3μm), 4I13/24I15/2 (1·53μm), have been obtained at room temperature. The positions of the energy levels related to the excitation, nonradiative and radiative processes have been established from complementary absorption measurements. The fluorescence lifetimes of the above-mentioned transitions have been determined from single exponential decays.  相似文献   
239.
Utility is sometimes defined as being a way to summarise choice, and sometimes as the benefit we get from experience. In economics, the twentieth century saw the former definition supplant the latter. Recent research by Kahneman and colleagues has undertaken to resurrect the latter definition under the heading of “experience utility”. In this paper I give a brief history of the concept of experience utility, and examine three normative claims that have been made about it: that it avoids the problem of dependent utilities, that it can be measured from an invariant “zero point”, and that it allows intrapersonal comparison of utilities.  相似文献   
240.
Two experiments examined pigeons' generalization to intermediate forms following training of concept discriminations. In Experiment 1, the training stimuli were sets of images of dogs and cats, and the transfer stimuli were head/body chimeras, which humans tend to categorize more readily in terms of the head part rather than the body part. In Experiment 2, the training stimuli were sets of images of heads of dogs and cats, and the intermediate stimuli were computer-generated morphs. In both experiments, pigeons learned the concept discrimination quickly and generalized with some decrement to novel instances of the categories. In both experiments, transfer tests were carried out with intermediate forms generated from both familiar and novel exemplars of the training sets. In Experiment 1, the pigeons' transfer performance, unlike that of human infants exposed to similar stimuli, was best predicted by the body part of the stimulus when the chimeras were formed from familiar exemplars. Spatial frequency analysis of the stimuli showed that the body parts were richer in high spatial frequencies than the head parts, so these data are consistent with the hypothesis that categorization is more dependent on local stimulus features in pigeons than in humans. There was no corresponding trend when the chimeras were formed from novel exemplars. In Experiment 2, when morphs of training stimuli were used, response rates declined smoothly as the proportion of the morph contributed by the positive stimulus fell, although results with morphs of novel stimuli were again less orderly.  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