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   4028篇
  免费   235篇
  2023年   25篇
  2022年   21篇
  2021年   57篇
  2020年   91篇
  2019年   104篇
  2018年   146篇
  2017年   154篇
  2016年   159篇
  2015年   125篇
  2014年   137篇
  2013年   530篇
  2012年   238篇
  2011年   238篇
  2010年   128篇
  2009年   141篇
  2008年   185篇
  2007年   164篇
  2006年   177篇
  2005年   142篇
  2004年   126篇
  2003年   139篇
  2002年   106篇
  2001年   47篇
  2000年   61篇
  1999年   62篇
  1998年   50篇
  1997年   49篇
  1996年   41篇
  1995年   41篇
  1994年   35篇
  1993年   46篇
  1992年   25篇
  1991年   27篇
  1990年   23篇
  1988年   28篇
  1987年   22篇
  1986年   23篇
  1985年   30篇
  1984年   40篇
  1983年   20篇
  1982年   28篇
  1981年   28篇
  1980年   21篇
  1979年   23篇
  1978年   18篇
  1976年   16篇
  1975年   15篇
  1974年   12篇
  1973年   12篇
  1972年   13篇
排序方式: 共有4263条查询结果,搜索用时 15 毫秒
121.
A three-level piecewise growth model (3L-PGM) can be used to break up nonlinear growth into multiple components, providing the opportunity to examine potential sources of variation in individual and contextual growth within different segments of the model. The conventional 3L-PGM assumes that the data are strictly hierarchical in nature, where measurement occasions (level 1) are nested within individuals (level 2) who are members of a single cluster (level 3). However, in longitudinal research, it is sometimes difficult for data structures to remain purely clustered during a study, such as when some students change classrooms or schools over time. One resulting data structure in this situation is known as a multiple membership structure, where some lower-level units are members of more than one higher-level unit. The new multiple membership PGM (MM-PGM) extends the 3L-PGM to handle multiple membership data structures frequently found in the social sciences. This study sought to examine the consequences of ignoring individual mobility across clusters when estimating a 3L-PGM in comparison to estimating a MM-PGM. MM-PGM estimates were less biased (especially in the cluster-level coefficient estimates), although we found substantial bias in cluster-level variance components across some conditions for both models.  相似文献   
122.
Journal of Philosophical Logic - In Berto’s logic for aboutness in imagination, the output content of an imaginative episode must be part of the initial content of the episode (Berto, Philos...  相似文献   
123.
This article explores the role negative history plays in political discourse on crisis management and how times of sociopolitical change in turn influence the strategies that can be employed to write a positive historical charter. Choosing Germany as a case study, we analyzed how political leaders negotiate Germany's narrative and political role during the European “refugee crisis” in speeches (n = 332) held between 2015 and 2018. Applying a combination of corpus-based and qualitative narrative analysis, we found that the context of a crisis is used to attach new meaning to Germany's role in World War II. By focusing on the lessons learned from history and pointing out the parallels between the current crisis and sociopolitical developments that took place 80 years ago, Germany is presented as the ideal advocate for a free and united Europe, a narrative that legitimizes its advancingly dominant role within the EU and beyond. The analysis demonstrates how times of change can facilitate social creativity strategies for nations whose past is dominated by negative history, with implications for the theory of identity management.  相似文献   
124.
The jail‐based competency treatment (JBCT) model has become an established forensic practice across the country. From the perspective of implementation science and the three core elements of the Promoting Action on Research Implementation in Health Service (PARiHS) framework, the JBCT model is a remarkable example of how context (an unrelenting and overwhelmingly strong demand for forensic beds) has driven multiple state governments to facilitate implementation of a methodology in the absence of empirical evidence supporting its efficacy. This 7‐year study of outcomes from four JBCT program sites provides this much‐needed evidence by showing that JBCT restored 56% of 1553 male and 336 female patients over an average of 48.7 days. At the same time, the study highlights how variations in JBCT models, methods, and preadmission stabilization time present challenges to planned and effective implementation of evidence‐based practice at the statewide system level. By identifying differential responsiveness to JBCT treatment by diagnosis and other factors, the study suggests preliminary implementation ideas for what types of patients are well served by the JBCT model as part of a continuum of restoration options that includes inpatient, outpatient and diversion. Significant findings showed that JBCT patients were restored at a higher rate and in a shorter time if they were female, < 20 years old (highest restoration rate; those < 60 years old also significantly better rates), free of co‐occurring intellectual and cognitive deficits, and malingering. Of the major diagnoses, schizoaffective disorder required a significantly longer length of JBCT treatment for restoration, and lower restoration rates than schizophrenia and bipolar disorder, although this was moderated by a significant interaction with abuse of amphetamines.  相似文献   
125.
Journal of Psychopathology and Behavioral Assessment - This paper presents the development and validation of the Possessions as Others and Self Inventory (POSI). The POSI is a 23-item self-report...  相似文献   
126.
Journal of Clinical Psychology in Medical Settings - Previous research has linked death attitudes, palliative care self-efficacy, and attitudes toward care of the dying among nursing students and...  相似文献   
127.
Clinical Child and Family Psychology Review - The crisis in child and adolescent mental health and wellbeing has prompted the development of school and community-based interventions to tackle...  相似文献   
128.
129.
Only recently has determining the child-rearing concerns of parents been considered an important research objective. Existing efforts have, for the most part, either employed small sample sizes or surveyed parents already in the process of seeking help or advice. It was, therefore, felt that additional, more representative data were needed. In the present study, 583 mothers with children aged 59 months or younger were surveyed regarding their concerns about their children's development. On the „Specific Needs Assessment Report”︁ (SNAR) (copyright © 1975, by Karl F. Riem, J. Jeffrey Crisco, and Kathy Willms), mothers rated their concerns for 60 developmental-behavioral items about their children's health, attending skills, problem behaviors, communication skills, motor skills, cognitive skills, self-help skills, and social skills. Mothers were most frequently concerned to a moderate or major degree about at least one item of the problem behavior category. For this category, parent-child management, crying-whining, and temper tantrums were the individual items of greatest concern. Mothers of girls more frequently indicated health concerns than mothers of boys. These results support those of previous investigations, which suggested the need for parent education programs to help parents manage their children.  相似文献   
130.
The social relations of three adult males in a captive chimpanzee group were evaluated for 12 months. The observations encompassed a period of transition in the dominance hierarchy providing an opportunity to assess behavioral patterns involved in the initiation of status changes. This study shows that dominance in the chimpanzee is expressed primarily through ritualized and non-contact behavior rather than by overt aggression. In particular, display behavior is important for indicating dominance rank, in communicating aggressive intent, and as a prelude to status struggles. The functional relationships between status, displays and other socio-sexual behavior patterns are presented.  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