全文获取类型
收费全文 | 1079篇 |
免费 | 170篇 |
国内免费 | 51篇 |
专业分类
1300篇 |
出版年
2025年 | 3篇 |
2024年 | 23篇 |
2023年 | 23篇 |
2022年 | 26篇 |
2021年 | 33篇 |
2020年 | 62篇 |
2019年 | 48篇 |
2018年 | 50篇 |
2017年 | 43篇 |
2016年 | 44篇 |
2015年 | 32篇 |
2014年 | 66篇 |
2013年 | 103篇 |
2012年 | 28篇 |
2011年 | 50篇 |
2010年 | 33篇 |
2009年 | 49篇 |
2008年 | 75篇 |
2007年 | 80篇 |
2006年 | 76篇 |
2005年 | 63篇 |
2004年 | 52篇 |
2003年 | 35篇 |
2002年 | 27篇 |
2001年 | 33篇 |
2000年 | 28篇 |
1999年 | 20篇 |
1998年 | 23篇 |
1997年 | 14篇 |
1996年 | 10篇 |
1995年 | 12篇 |
1994年 | 7篇 |
1993年 | 5篇 |
1992年 | 3篇 |
1991年 | 4篇 |
1990年 | 2篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1986年 | 2篇 |
1985年 | 2篇 |
1984年 | 4篇 |
1983年 | 3篇 |
1978年 | 1篇 |
1975年 | 1篇 |
排序方式: 共有1300条查询结果,搜索用时 0 毫秒
971.
A selective prevention design was applied to 238 recently separated families. Of these, 153 mothers randomly assigned to the experimental (E) group participated in 14 group sessions focused on Parent Management Treatment (PMT). Prior analyses showed that, over time, the group of families in the untreated group deteriorated in both parenting practices and in child outcomes. In keeping with the classic prevention pattern, families in the E group showed modest improvements in parenting and in child outcomes. Improvements in parenting were associated with significant reductions in problem behavior. The data showed that those mothers who improved their parenting skills during the first 12 months also showed significant reductions in maternal depression during that same interval. A cross-lagged panel analysis showed that a reduction in maternal depression during the first year of the study was a significant predictor of maintenance or improvements over the next 18 months. The findings are consistent with the concept of the family as a system. 相似文献
972.
工业革命以来,伴随现代化进程,人类的内外环境和社会生活均已发生巨变.当代中医病因学和治疗学应及时研究全球气候的非周期性变化、城市环境致病因子等新要素,应该对心理因素、工作环境、生活方式致病作用的凸现作出相应的反应.即,对传统中医学的"三因制宜"体系应进行现代整合,以促进其辨证施治优势与时俱进. 相似文献
973.
县级领导干部的绩效考核一直是党和国家关注的焦点,而实践中县级领导干部的绩效考核多年来一直是个难点问题。该文通过回顾国内外绩效考核的相关理论和文献,对应该如何建立科学有效的县级领导干部绩效结构及考核指标体系进行了探讨,并进一步提出了其研究的创新和意义所在。 相似文献
974.
Starting off from the infinitary system for common knowledge over multi-modal epistemic logic presented in [L. Alberucci, G. Jäger, About cut elimination for logics of common knowledge, Annals of Pure and Applied Logic 133 (2005) 73–99], we apply the finite model property to “finitize” this deductive system. The result is a cut-free, sound and complete sequent calculus for common knowledge. 相似文献
975.
Marta Bílková 《Studia Logica》2007,85(1):1-31
We investigate uniform interpolants in propositional modal logics from the proof-theoretical point of view.
Our approach is adopted from Pitts’ proof of uniform interpolationin intuitionistic propositional logic [15]. The method is
based on a simulation of certain quantifiers ranging over propositional variables and uses a terminating sequent calculus
for which structural rules are admissible.
We shall present such a proof of the uniform interpolation theorem for normal modal logics K and T. It provides an explicit
algorithm constructing the interpolants.
Presented by Heinrich Wansing 相似文献
976.
论社会主义核心价值体系基本内容的层次结构 总被引:9,自引:0,他引:9
社会主义核心价值体系的基本内容是一种结构性存在,它所包含的四个方面的基本内容具有不同的性质,其中,马克思主义指导思想是导向性内容,中国特色社会主义共同理想是目标性内容,以爱国主义为核心的民族精神和以改革创新为核心的时代精神是情感性和动力性内容,社会主义荣辱观是基础性内容。从层次结构上看,社会主义核心价值体系所包含的四个方面的基本内容,从最低层次到最高层次,构成一个逻辑严谨、层次分明、由高到低、由理论到实践、由思想到行为的整体性框架结构,而每一层次也有着自身的层次结构特点。 相似文献
977.
Jeremy I. Skipper Susan Goldin-Meadow Howard C. Nusbaum Steven L. Small 《Brain and language》2007,101(3):260
Speech-associated gestures are hand and arm movements that not only convey semantic information to listeners but are themselves actions. Broca’s area has been assumed to play an important role both in semantic retrieval or selection (as part of a language comprehension system) and in action recognition (as part of a “mirror” or “observation–execution matching” system). We asked whether the role that Broca’s area plays in processing speech-associated gestures is consistent with the semantic retrieval/selection account (predicting relatively weak interactions between Broca’s area and other cortical areas because the meaningful information that speech-associated gestures convey reduces semantic ambiguity and thus reduces the need for semantic retrieval/selection) or the action recognition account (predicting strong interactions between Broca’s area and other cortical areas because speech-associated gestures are goal-direct actions that are “mirrored”). We compared the functional connectivity of Broca’s area with other cortical areas when participants listened to stories while watching meaningful speech-associated gestures, speech-irrelevant self-grooming hand movements, or no hand movements. A network analysis of neuroimaging data showed that interactions involving Broca’s area and other cortical areas were weakest when spoken language was accompanied by meaningful speech-associated gestures, and strongest when spoken language was accompanied by self-grooming hand movements or by no hand movements at all. Results are discussed with respect to the role that the human mirror system plays in processing speech-associated movements. 相似文献
978.
出生缺陷(birth defection,BD)已经成为目前全世界共同关注的一个重大公共卫生问题。为此,世界卫生组织提出预防出生缺陷的“三级预防策略”,国家计生委于2000年组织实施“出生缺陷干预工程”。结合哲学思想对出生缺陷的三级预防以及干预模式进行综合分析。 相似文献
979.
墨西哥近年的医疗卫生改革取得了巨大的成就。通过简要地描述墨西哥人群健康状况、医疗卫生资源现状、卫生系统绩效以及与中国的比较,分析了墨西哥三轮卫生改革的特点、存在的问题以及面临的挑战,旨在提出墨西哥卫生系统与医疗保障体系改革对我国医疗卫生改革的启示和借鉴。 相似文献
980.
袁日华 《医学与哲学(人文社会医学版)》2007,28(9):29-30,35
阐述了新型农村合作医疗的基本制度规定,包括资金来源、办理程序、就诊规定、补偿办法、组织机构以及基金监督,并在制度的框架内对新型农村合作医疗进行了评析,通过对152名农民的问卷调查,了解农民对新型农村合作医疗的基本评价,对农民参与新型农村合作医疗的吸引和排斥因素进行分析。 相似文献