全文获取类型
收费全文 | 785篇 |
免费 | 65篇 |
国内免费 | 62篇 |
专业分类
912篇 |
出版年
2024年 | 3篇 |
2023年 | 6篇 |
2022年 | 15篇 |
2021年 | 16篇 |
2020年 | 29篇 |
2019年 | 28篇 |
2018年 | 25篇 |
2017年 | 23篇 |
2016年 | 34篇 |
2015年 | 17篇 |
2014年 | 32篇 |
2013年 | 80篇 |
2012年 | 38篇 |
2011年 | 48篇 |
2010年 | 33篇 |
2009年 | 32篇 |
2008年 | 54篇 |
2007年 | 45篇 |
2006年 | 39篇 |
2005年 | 39篇 |
2004年 | 35篇 |
2003年 | 19篇 |
2002年 | 28篇 |
2001年 | 10篇 |
2000年 | 14篇 |
1999年 | 11篇 |
1998年 | 11篇 |
1997年 | 16篇 |
1996年 | 9篇 |
1995年 | 6篇 |
1994年 | 6篇 |
1993年 | 6篇 |
1992年 | 4篇 |
1991年 | 4篇 |
1990年 | 8篇 |
1989年 | 6篇 |
1987年 | 8篇 |
1986年 | 8篇 |
1985年 | 5篇 |
1984年 | 9篇 |
1983年 | 3篇 |
1982年 | 6篇 |
1981年 | 7篇 |
1980年 | 6篇 |
1978年 | 9篇 |
1976年 | 2篇 |
1975年 | 2篇 |
1974年 | 3篇 |
1972年 | 4篇 |
1971年 | 2篇 |
排序方式: 共有912条查询结果,搜索用时 7 毫秒
241.
242.
243.
Jim Paul Dan L. Costley Jon P. Howell Peter W. Dorfman David Trafimow 《Journal of applied social psychology》2001,31(9):1821-1842
Shamir, House, and Arthur (1993) suggested that the effects of charismatic leadership on followers' motivation are mediated by the increased salience of collective identities in followers' self-concepts. This study empirically examines the effects of leadership messages on followers' self-concept accessibilities. Charismatic and integrative (combined charismatic and individualized consideration) leadership increased the accessibility of followers' collective self-concepts. Individualized consideration increased the accessibility of followers' private self-concepts. These results support the propositions of the self-concept-based theory of charismatic leadership. Charismatic and integrative leadership messages from a leader resulted in higher follower collective self-concept accessibilities than did routinized messages. This finding underscores the importance of a charismatic leader, even when charismatic messages have become routinized. 相似文献
244.
245.
Attribution of beliefs by 13-month-old infants 总被引:3,自引:0,他引:3
In two experiments, we investigated whether 13-month-old infants expect agents to behave in a way that is consistent with information to which they have been exposed. Infants watched animations in which an animal was either provided information or prevented from gathering information about the actual location of an object. The animal then searched successfully or failed to retrieve the object. Infants' looking times suggest that they expected searches to be effective when--and only when--the agent had had access to the relevant information. This result supports the view that infants possess an incipient metarepresentational ability that permits them to attribute beliefs to agents. We discuss the viability of more conservative explanations and the relation between this early ability and later forms of theory of mind that appear only after children have become experienced verbal communicators. 相似文献
246.
余丹 《医学与哲学(人文社会医学版)》2007,28(1):23-23,26
中国艾滋病立法始于1987年,其标志性法规性文件就是《艾滋病监测管理的若干规定》,这也是中国第一部关于艾滋病的法规性文件.中国艾滋病立法虽然已有了19年的历史,但至今中国仍没有专门的、系统的、权威的艾滋病法规,大多数法律或法规性内容都是分散在其他的法律、法规或规章中,现有的法律法规体系残缺不全.2006年1月29日,国务院总理温家宝签署第457号国务院令,公布了《艾滋病防治条例》,该条例于2006年3月1日起施行.该条例明确了政府和个人艾滋病防治的权利与义务,应该是中国目前最专门、最系统、最权威的艾滋病法规.但如何保护艾滋病患者的隐私权,该条例并未充分说明,因此有必要予以探讨和研究. 相似文献
247.
教师职业倦怠是教师因工作时间过长、工作量过大、工作强度过高所经历的一种疲惫不堪的状态,包括情绪衰竭、去人性化、低个人成就感三个方面.教师职业倦怠的起因很多,除个人因素外,更重要的是环境因素,主要包括超量工作、缺乏调节、缺乏奖赏、人际关系障碍、公平缺失和价值冲突等,研究者认为教会教师应对倦怠的策略是缓解倦怠的有效方法. 相似文献
248.
The opioid systems play an important role in mediating both physical pain and negative affects (eg, the pain of social isolation). From an evolutionary perspective, it is not surprising that the neurocircuitry and neurochemistry of physical pain would overlap with that involved in complex social emotions. Exposure to trauma as well as a range of gene variants in the opioid system may be associated with alterations in opioid systems function, with changes in reward processing, and with vulnerability to substance abuse. A role for interventions with opioid agents in depression and anxiety disorders has been suggested. 相似文献
249.
Dan Moldovan Christine Clark Sanda Harabagiu Daniel Hodges 《Journal of Applied Logic》2007,5(1):49-69
This paper presents the architecture and functionality of a logic prover designed for question answering. The approach transforms questions and answer passages into logic representations based on syntactic, semantic and contextual information. World knowledge supplements the linguistic, ontological, and temporal axioms supplied to the prover which renders a deep understanding of the relationship between the question and answer text. The trace of the proofs provides a basis for generating human comprehensible answer justifications. The results show that the prover boosts the performance of the Question Answering system on TREC 2004 questions by 12%. 相似文献
250.