全文获取类型
收费全文 | 1763篇 |
免费 | 266篇 |
国内免费 | 76篇 |
专业分类
2105篇 |
出版年
2025年 | 9篇 |
2024年 | 41篇 |
2023年 | 35篇 |
2022年 | 41篇 |
2021年 | 47篇 |
2020年 | 88篇 |
2019年 | 78篇 |
2018年 | 81篇 |
2017年 | 82篇 |
2016年 | 83篇 |
2015年 | 57篇 |
2014年 | 102篇 |
2013年 | 164篇 |
2012年 | 54篇 |
2011年 | 89篇 |
2010年 | 52篇 |
2009年 | 71篇 |
2008年 | 117篇 |
2007年 | 118篇 |
2006年 | 116篇 |
2005年 | 101篇 |
2004年 | 88篇 |
2003年 | 73篇 |
2002年 | 50篇 |
2001年 | 45篇 |
2000年 | 34篇 |
1999年 | 28篇 |
1998年 | 29篇 |
1997年 | 25篇 |
1996年 | 12篇 |
1995年 | 21篇 |
1994年 | 9篇 |
1993年 | 8篇 |
1992年 | 9篇 |
1991年 | 7篇 |
1990年 | 3篇 |
1989年 | 3篇 |
1988年 | 2篇 |
1987年 | 1篇 |
1986年 | 3篇 |
1985年 | 2篇 |
1984年 | 7篇 |
1983年 | 4篇 |
1982年 | 1篇 |
1981年 | 2篇 |
1980年 | 3篇 |
1979年 | 4篇 |
1978年 | 2篇 |
1975年 | 2篇 |
1973年 | 2篇 |
排序方式: 共有2105条查询结果,搜索用时 15 毫秒
51.
Alasdair Cochrane 《Res Publica》2007,13(3):293-318
This paper examines whether non-human animals have a moral right not to be experimented upon. It adopts a Razian conception
of rights, whereby an individual possesses a right if an interest of that individual is sufficient to impose a duty on another.
To ascertain whether animals have a right not to be experimented on, three interests are examined which might found such a
right: the interest in not suffering, the interest in staying alive, and the interest in being free. It is argued that while
the first two of these interests are sufficient to ground animal rights against being killed and made to suffer by experiments,
the interest in freedom does not ground a general animal right not to be used in experimentation.
Winner of the second annual Res Publica Postgraduate Essay Prize, 2006. 相似文献
52.
Lappi H Valkonen-Korhonen M Georgiadis S Tarvainen MP Tarkka IM Karjalainen PA Lehtonen J 《Infant behavior & development》2007,30(4):546-556
The effects of eating on heart rate variability (HRV) differ between adults and newborns. This may reflect the impact of suckling on the overall psychophysiological and autonomic nervous system maturation. The purpose of the present study was to explore whether the reactions of HRV during feeding change towards the adult pattern during the first 6 months of life. In addition, the effects of non-nutritive and nutritive sucking on heart rate (HR) and HRV were compared. The participants were 23 infants on whom recordings were performed as newborns and at 6, 12 and 24 weeks old. Nutritive sucking caused an increase in HR and a decline in HRV. The results were consistent with previous reports of a decrease in high frequency components of HRV during feeding in newborns, reflecting a decrease in parasympathetic activity. This response was apparent in all four ages studied, and remained similar throughout the 6-month period. However, age as an independent factor seemed to influence both HR and HRV. Pacifier sucking had no significant effects on HRV at any age. The results demonstrate the physical strain that sucking imposes on the baby, with a specific autonomic nervous system response involved. We consider this response an essential part of the overall psychophysiological maturation of infants. 相似文献
53.
通过对广西部分人群在预防艾滋病知识和对艾滋病人态度方面的情况调查,了解我区开展艾滋病健康教育的现状,探讨完善我区艾滋病预防宣传教育体系的途径;我区部分人群预防艾滋病知识知晓率高低不够均衡;我区艾滋病预防宣传教育收效明显,但有待完善。 相似文献
54.
The present study investigated emotional influences on behavior in a one-shot, simultaneous, give-some dilemma game. In accordance with functional perspectives on the role of discrete emotions, we found fear to reduce, and guilt to increase levels of cooperation. Moreover, we showed individual differences in the effect of induced emotional states. Specifically, results indicated that inducing fear reduced cooperation only for individuals with a pro-social value orientation, and that guilt induction increased cooperation only for individuals with a pro-self value orientation. We also established that both social value orientations could be adequately described in terms of differences in chronically accessible goals (as assessed by value-importance ratings). These results, therefore, seem to support our hypothesis that individual differences in the behavioral consequences of induced emotional states are related to variation in chronic accessibility of general goals associated with a particular emotional state. 相似文献
55.
将中南大学湘雅医学院2010级临床医学五年制197名学生随机分成两组,在医学影像学见习教学过程中分别应用影像存储及传输系统(PACS)教学法(98人)及传统读片教学法(99人),学期结束时对两组学生考试成绩进行分析,并对PACS组学生进行问卷调查及结果分析.统计数据显示,PACS组学生读片测验及卷面考试中,病例分析题成绩显著高于传统读片组,问卷调查显示PACS组学生大多数认可该教学方法.因此,应用PACS教学有助于提高学生的临床分析能力及主动学习的能力,是学生欢迎的教学方式.但对医学影像学基本知识的传授,应用PACS法较传统读片法并无明显优势. 相似文献
56.
57.
《管予》渊源于齐文化,法制思想以礼、法并重为特色,齐用之而为东方大国;秦用商、韩之法迅速强大并统一六国,但秦法严苛激进,任法而废礼,致秦二世而亡。汉承秦之弊,在历史与现实中寻求适合自己发展的道路,于偶然,也是必然中选择了礼法并重的《管子》法制思想作为治国方略,史称黄老政治,使国家逐步实现了稳定与繁荣,并开创了二千多年的秦汉制度。 相似文献
58.
Dirk Smeesters Vincent Y. Yzerbyt Luk Warlop 《Journal of experimental social psychology》2009,45(1):211-216
Using cooperative behavior in economic decision-making settings, we predicted and found that people’s susceptibility to priming influences is moderated by two factors: people’s chronic accessibility to a behavioral repertoire and people’s self-concept activation. In Experiment 1, we show that individuals highly consistent in their social value orientation (SVO) assimilate their behavior to their dispositions rather than to the primes, whereas the opposite effect is obtained among individuals with a low consistent SVO. In Experiment 2, we show that low consistent SVO individuals become less susceptible to priming influences when their self-concept is activated. These studies shed new light on individuals’ susceptibility to priming influences on social behavior. 相似文献
59.
David Tannenbaum Eric Luis Uhlmann Daniel Diermeier 《Journal of experimental social psychology》2011,47(6):1249-1254
Public outrage is often triggered by “immaterially” harmful acts (i.e., acts with relatively negligible consequences). A well-known example involves corporate salaries and perks: they generate public outrage yet their financial cost is relatively minor. The present research explains this paradox by appealing to a person-centered approach to moral judgment. Strong moral reactions can occur when relatively harmless acts provide highly diagnostic information about moral character. Studies 1a and 1b first demonstrate dissociation between moral evaluations of persons and their actions—although violence toward a human was viewed as a more blameworthy act than violence toward an animal, the latter was viewed as more revealing of bad moral character. Study 2 then shows that person-centered cues directly influence moral judgments—participants preferred to hire a more expensive CEO when the alternative candidate requested a frivolous perk as part of his compensation package, an effect mediated by the informativeness of his request. 相似文献
60.
儿童运动视觉表象操作水平的发展及影响因素 总被引:2,自引:0,他引:2
采用计算机软件控制实验,以暴露运动一段行程后进入遮蔽的光点为刺激物,光点以三种不同运动速度、三种不同运动行距组合呈现,要求儿童判断光点到达目标位置时按键反应。结果表明:5—19岁儿童运动视觉表象操作水平的发展存在5一8岁、11—14岁两个加速期;客体运动速度对运动视觉表象操作绩效有显著影响,5、8、11岁组快速较中速下.5.8岁组中速较慢速下操作准确性均有显著降低;客体运动行距对运动视觉表象操作绩效也有显著的影响.5、8、11岁组右目标位置下较中目标位置下操作准确性显著降低;性别对运动视觉表象操作水平无显著影响。 相似文献