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   15282篇
  免费   540篇
  国内免费   199篇
管理学   998篇
劳动科学   2篇
民族学   194篇
人才学   1篇
人口学   188篇
丛书文集   1849篇
理论方法论   786篇
综合类   10092篇
社会学   1391篇
统计学   520篇
  2024年   29篇
  2023年   126篇
  2022年   147篇
  2021年   165篇
  2020年   235篇
  2019年   283篇
  2018年   279篇
  2017年   315篇
  2016年   303篇
  2015年   387篇
  2014年   777篇
  2013年   1087篇
  2012年   941篇
  2011年   1079篇
  2010年   842篇
  2009年   865篇
  2008年   971篇
  2007年   1102篇
  2006年   1001篇
  2005年   972篇
  2004年   936篇
  2003年   868篇
  2002年   771篇
  2001年   607篇
  2000年   359篇
  1999年   152篇
  1998年   78篇
  1997年   56篇
  1996年   46篇
  1995年   40篇
  1994年   31篇
  1993年   27篇
  1992年   28篇
  1991年   27篇
  1990年   19篇
  1989年   22篇
  1988年   12篇
  1987年   11篇
  1986年   3篇
  1985年   6篇
  1984年   2篇
  1983年   5篇
  1982年   2篇
  1981年   2篇
  1979年   1篇
  1978年   1篇
  1975年   3篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
在线下垂直实力对等、制造商主导和实体店主导三种渠道权力结构下,构建制造商、实体店和电商之间的博弈模型,探讨线下渠道权力结构与制造商线上销售模式的匹配关系。研究结果表明:(1)当电商要求的佣金比例较小时,在不同的线下渠道权力结构下,制造商都应该选择线上代销模式;而当电商要求的佣金比例较大时,在线下垂直实力对等结构下,制造商应该选择线上转销模式,而在制造商主导和实体店主导结构下,制造商应该选择线上代销模式。(2)当制造商选择线上转销模式时,在线下制造商主导的结构下,制造商给予实体店的批发价格最大,在垂直实力对等结构下次之,在实体店主导结构下最小。然而,线下渠道权力结构的差异并不会影响制造商给予电商的批发价格。(3)当制造商选择线上代销模式时,在线下制造商主导结构下,线下销售价格最高;在线下垂直实力对等结构下,线上销售价格最高。  相似文献   
992.
以演化博弈为主要分析工具,构建了产方与学研方演化博弈模型,进行了演化稳定策略分析。结果表明:在进行合作教育时,产方与学研方的积极合作是双方的良性演化稳定策略。分析认为,双方最终选择何种策略受到产方与学研方的内在需要和政府部门的外部介入的影响。  相似文献   
993.
随着国家教育事业的不断发展,关乎教育质量的教师教育问题愈来愈凸显其重要的意义。当前,我国教师教育课程资源仍存在一些问题。从混沌理论演绎来看,教师教育课程资源应该是一个混沌的综合系统,在课程资源建设中应秉持一种生成性的、发展的及非线性的视角,系统地去认识蕴藏在教师教育系统内部和外部的各种资源,把握好资源流通过程中的"供"与"给",发挥各种资源的潜在效能,才能实现整个教师教育培养的可持续发展。  相似文献   
994.
Participatory approaches are frequently recommended for international development programs, but few have been evaluated. From 2007 to 2010 the Andean Change Alliance evaluated an agricultural research and development approach known as the “Participatory Market Chain Approach” (PMCA). Based on a study of four cases, this paper examines the fidelity of implementation, the factors that influenced implementation and results, and the PMCA change model. We identify three types of deviation from the intervention protocol (lapses, creative adaptations, and true infidelities) and five groups of variables that influenced PMCA implementation and results (attributes of the macro context, the market chain, the key actors, rules in use, and the capacity development strategy). There was insufficient information to test the validity of the PMCA change model, but results were greatest where the PMCA was implemented with highest fidelity. Our analysis suggests that the single most critical component of the PMCA is engagement of market agents – not just farmers – throughout the exercise. We present four lessons for planning and evaluating participatory approaches related to the use of action and change models, the importance of monitoring implementation fidelity, the limits of baseline survey data for outcome evaluation, and the importance of capacity development for implementers.  相似文献   
995.
Since the introduction and definition of relationship algebras by James (1957), rolatively little use has been made of this theory in experimental design and analysis problems This may be due to the underlying theory of relationship algebras being previously accessible only in books on mathematical structure theory, e.g. van der Waerden (1950) This paper provides a development of the theory of relationship algebras beginning at an elementray level and including only those parts of mathematical structure theory which are essential to this development. An example of its application in derving an analysis due to alling (1967) is presented.  相似文献   
996.
李洪志的“修炼论”是“法轮功”的认识论基础。运用马克思主义实践论的观点分析批判它所提出的认识论问题 ,具有重要意义  相似文献   
997.
In this study, we examined the hypothesis that preschoolers' performance on emotion and cognitive tasks is organized into discrete processes of control and understanding within the domains of emotion and cognition. Additionally, we examined the relations among component processes using mother report, behavioral observation, and physiological measures of emotion control. Participants were 263 children (42 percent non‐White) and their mothers. Results indicated that the three approaches of measuring emotion control were unrelated. Regardless of the measurement method, a four‐factor solution differentiating emotion control and understanding and cognitive control and understanding fits the data better than did either of two two‐factor models, one based on domains of emotion and cognition across processes, and one based on processes of control and understanding across domains. Results of this research replicate those of Leerkes et al. in describing a differentiated underlying structure of emotion and cognition processes in early childhood while also extending these conclusions across samples and across measurement approaches for assessing emotion control.  相似文献   
998.
Latent growth modeling (LGM) has emerged as a flexible analytic technique for modeling change over time because it can describe developmental processes at both the inter- and intra-individual levels. The LGM method can also provide a means for testing the contribution of other variables in order to explain variability in growth trajectories. This paper didactically illustrates the use of LGM as an analytical tool in program evaluation. Specifically, a hypothetical evaluation of a high school drug prevention program was used to demonstrate: (a) how LGM can be used to assess the longitudinal impact of a prevention program by comparing treatment and control populations with respect to individual differences in initial status and in rate of change; and (b) how predictors of initial status (post-intervention) and growth selected on the basis of a particular program theory can be incorporated in the model to explain program impact. Some advantages and limitations of using LGM in program evaluation are highlighted.  相似文献   
999.
The sociology of the next century is likely to differ from that of the twentieth century. The current situation and the future prospects of sociology are assessed by spelling out the trajectory over the past century of sociology's predominant assumptions about the character and direction of the social world and of its own task of cognition. Sociology is located in three spaces of identity: a space of disciplines, a stage of everyday practice, and a space of imagination and investigation. From the cosmological, epistemological, and spatial trajectories some indications of a new, very different future of sociology are given. Finally, a way of preserving and developing the legacy of first century sociology is presented, in the form of nodes of knowledge, central to a 'typical' sociological approach to the social.  相似文献   
1000.
This paper makes the case that theorizing in family studies might be different if scholars asked the types of questions that now are asked in the physical sciences. Initial efforts to move toward a more abstract explanatory level in family studies led to inventorying and verification. This paper argues that the recognition of a realm of discovery, allowing for the creative and disciplinary use of imagination and metaphor, would extend the scope and quality of questioning. To ground the argument, the paper focuses on the problematics associated with the conceptualization of process in marriages and families.  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