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   2589篇
  免费   246篇
  国内免费   120篇
  2024年   12篇
  2023年   70篇
  2022年   31篇
  2021年   66篇
  2020年   140篇
  2019年   161篇
  2018年   153篇
  2017年   155篇
  2016年   132篇
  2015年   95篇
  2014年   134篇
  2013年   355篇
  2012年   61篇
  2011年   82篇
  2010年   65篇
  2009年   80篇
  2008年   98篇
  2007年   119篇
  2006年   118篇
  2005年   98篇
  2004年   83篇
  2003年   105篇
  2002年   85篇
  2001年   91篇
  2000年   49篇
  1999年   53篇
  1998年   28篇
  1997年   37篇
  1996年   22篇
  1995年   34篇
  1994年   17篇
  1993年   24篇
  1992年   8篇
  1991年   8篇
  1990年   5篇
  1989年   6篇
  1988年   3篇
  1987年   3篇
  1986年   2篇
  1984年   10篇
  1983年   2篇
  1982年   4篇
  1981年   5篇
  1980年   5篇
  1979年   10篇
  1978年   8篇
  1977年   14篇
  1976年   2篇
  1975年   5篇
  1974年   2篇
排序方式: 共有2955条查询结果,搜索用时 15 毫秒
1.
What does a postcolonial ethics of care mean for feminist geographers doing archival work? Feminist geographers have long called for ethical research engagement. This asserts the importance of caring relationships with research mentees, collaborators, participants, and spaces. But care comes both with promise and pitfalls. As postcolonial and antiracist geographers argue, we must emplace care. That is, we must recognize that care, including caring feminist geographic practice, is grounded in colonial past-presents. We must work towards responsible ontologies and epistemologies that attend to and redress these histories. In this article, we draw on feminist postcolonial work on care (namely Raghuram et al. (2009) and Noxolo et al. (2012)) along with intersectional interventions in archival studies (Hartman, 2008; Cifor and Wood, 2017; Sutherland, 2017) to examine the politics of care in and through the archives. We draw on postcolonial interventions to reflect on our own archival geographic practice in the USA, the Dominican Republic, and Uganda. We use these accounts to make visible how caring archival practice, and critical archives of care, can shed light on, reinforce, or salve deep geohistories of heteropatriarchal colonialism and its aftermath. We assert that a postcolonial approach to care denaturalizes and spatializes racial power in feminist geographic practice, here via the archives.  相似文献   
2.
Abstract

This study builds on and extends previous sales leadership research by exploring sales professionals’ perceptions of effective leadership behaviors. Semistructured interviews with both sales leaders and salespeople working in a global enterprise software company were examined through a qualitative analysis. Results indicated that participants believed sales leadership played an important role in influencing sales performance. When asked to describe specific sales leader behaviors that best enable salesperson performance, sales professionals – both sales leaders and salespeople – overwhelmingly referenced coaching, followed by collaborating, championing, and customer engaging. We define and describe these four key sales leader behaviors and identify four potential mediating variables (trust, confidence, optimism, and resilience), from which emerges a conceptual framework of sales leader behaviors perceived to enable salesperson performance. We examine these four key sales leader behaviors and mediators in the broader context of leadership theory, particularly transformational, servant, authentic, and adaptive leadership theories. The key contribution of this study is the identification of a set of leader behaviors that are likely to be especially effective in modern sales organizations given that they originated from the perceptions of sales professionals themselves.  相似文献   
3.
4.
本文从有关研究证据的基础上,介绍了个人化设计的理论基础和实验设计,并在此基础上讨论了个人化设计在临床研究领域中的应用价值,总结出一种适合临床病人使用的研究程序。个人化设计允许对个体的个人价值进行分析,并能同时研究不同刺激信息的作用,在个体水平上分析个体差异。通过简化了的实验程序,个人化设计为解决临床研究中的问题提供了一种新的思维方式。文中还对相关研究法的局限进行了讨论。  相似文献   
5.
Simultaneous prompting (a type of antecedent prompt and test procedure) and constant time delay were compared with four students with moderate mental retardation learning expressive sight words. A parallel treatments design across word sets and replicated across students was used. For acquisition, the simultaneous prompting procedures required fewer trials, sessions, and training time to criterion and resulted in fewer student errors during daily probe and training sessions. However, maintenance data indicated mixed results across the two procedures. Reliability data (both dependent and independent variables) revealed no differences between the two procedures in terms of the teacher's accuracy in recording student responses and implementing each procedure. Future research issues are discussed.  相似文献   
6.
The armoury of statistical techniques has recently been enhanced with the multilevel model for longitudinal data. The present article explains the multilevel model for longitudinal data to the statistically non-sophisticated reader. It shows how the model relates to the five rationales of longitudinal research, as they were put forward by Baltes and Nesselroade (1979). In addition, it shows how the model matches Wohlwill's methodology of developmental functions. To elucidate the model further, three applications are given. The applications pertain to the development of children's sleeping duration during the first 18 months of life, the effects of early hospitalization on the daily frequency of crying, and the developmental relationship between social and solitary play.  相似文献   
7.
The present work examines imitation of mouth opening and tongue protrusion in 32 full-term infants at three different occasions: When the infants are two to three days, three weeks, and three months old. The analysis focuses (1) on individual differences in imitative behaviour and (2) on how to operationalize the infants' responses. The overall group analysis revealed that imitation of tongue protrusion was statistically significant for both two- to three-day-old and three-week-old infants but not when the children had become three months old. No statistically significant effect was observed for imitation of mouth opening. Two different imitation indexes were constructed in order to assess individual differences in early imitative behaviour. Results show that short-term stability in imitative tendencies exists between the first and second observation. The results further reveal that methodological factors must be seriously considered when studying neonatal imitation: the overall imitation found for tongue protrusion is demonstrated to be dependent on how the infants' responses are coded.  相似文献   
8.
The need to train accurate, not necessarily agreeing, observers is discussed. Intraobserver consistency as an intermediate criterion in such training is proposed and contrasted with the more familiar criterion of interobserver agreement. Videotaped observations of social interactions between handicapped and nonhandicapped preschoolers provided the medium for examining the criterion agreement of four observers trained against each type of standard. Observers generally failed to show high levels of criterion agreement whether trained to a within- or to a between-observer agreement standard. The results varied somewhat with the frequency of behaviors, however. Correlations between interobserver agreement and intraobserver consistency were variable but somewhat higher when interobserver agreement was the training criterion than when intraobserver consistency was the criterion. Correlations between interobserver agreement and criterion agreement ranged from — .16 to .89 during interobserver agreement training. Correlations between intraobserver consistency and criterion agreement ranged from — .23 to .99 during intraobserver consistency training.  相似文献   
9.
Many conceptual, methodological, and clinical issues remain unresolved in the assessment of anxiety disorders. Despite the prevalence, incidence, chronicity, and severity of anxiety disorders, research efforts and funding have fallen behind with regard both to other disorders and to addressing critical issues in the field. The primary objective of this paper is to provide a scientific critique regarding a number of often ignored yet salient considerations in anxiety-disorders assessment. Critical analyses of and recommendations regarding the multidimensional nature of anxiety, comorbidity, uniformity myths, synchrony, normative comparisons, psychometric properties of measures, and treatment integrity are offered. Finally, promising areas of clinical research are presented to enhance further the current understanding of the complexities inherent in assessing anxiety disorders.Preparation of this paper was supported in part by NIMH Grant MH36299.  相似文献   
10.
Redundancy analysis (also called principal components analysis of instrumental variables) is a technique for two sets of variables, one set being dependent of the other. Its aim is maximization of the explained variance of the dependent variables by a linear combination of the explanatory variables. The technique is generalized to qualitative variables; it then gives implicitly a simultaneous optimal scaling of the dependent, qualitative variables. Examples are taken from the Dutch Life Situation Survey 1977, using Satisfaction with Life and Happiness as dependent variables. The analysis leads to one well-being scale, defined by the explanatory variables Marital status, Schooling, Income and Activity.The views expressed in this paper are those of the author and do not necessarily reflect the policies of the Netherlands Central Bureau of Statistics.  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