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   1056篇
  免费   78篇
  1134篇
  2024年   4篇
  2023年   6篇
  2022年   6篇
  2021年   18篇
  2020年   22篇
  2019年   29篇
  2018年   35篇
  2017年   50篇
  2016年   47篇
  2015年   32篇
  2014年   29篇
  2013年   123篇
  2012年   63篇
  2011年   74篇
  2010年   36篇
  2009年   27篇
  2008年   41篇
  2007年   42篇
  2006年   38篇
  2005年   48篇
  2004年   40篇
  2003年   40篇
  2002年   40篇
  2001年   11篇
  2000年   11篇
  1999年   15篇
  1998年   15篇
  1997年   10篇
  1996年   8篇
  1995年   7篇
  1994年   13篇
  1993年   7篇
  1992年   4篇
  1991年   13篇
  1989年   6篇
  1987年   5篇
  1986年   4篇
  1985年   10篇
  1984年   10篇
  1983年   11篇
  1982年   14篇
  1981年   11篇
  1980年   6篇
  1979年   12篇
  1978年   3篇
  1977年   6篇
  1975年   5篇
  1974年   6篇
  1973年   4篇
  1970年   3篇
排序方式: 共有1134条查询结果,搜索用时 8 毫秒
61.

It has become increasingly common for young children to be taken care of by multiple caregivers in China after the socio-economic reforms. Complex migration patterns and high female labour force participation have led to children receiving care from various individuals in different contexts. However, little is known about how childcare arrangements are associated with child health well-being. This study examines various early childhood caregivers and their influences on children’s physical health in China. Using data from the China Health and Nutrition Survey (CHNS 1991–2011) with 3,470 children aged 2 to 6, we first identified different types of childcare arrangements in and outside of the household based on who provides the care, where they provide the care, and the intensity of the care. Then we examined the relationship between various childcare arrangements and health outcomes for children. Overall, household members undertook early childhood care tasks in China, with an increase in grandparents as primary caregivers between 1991 and 2011. The proportion of children receiving formal childcare fluctuated around 20% during this period. The findings suggest that: 1) primary caregiver in the household other than parents is not associated with undesirable physical health outcomes; 2) formal childcare outside the household is associated with higher height and lower BMI scores; 3) primary caregivers in the household, particular grandparents, moderate the association between childcare arrangements outside the household and children’s health outcomes. It yields an implication that early childhood care policies incorporating multiple caregivers would benefit children’s well-being in China.

  相似文献   
62.
This article examines the multiple relations between the rationalist tradition of French philosophy of science exemplified by the work of Gaston Bachelard, and the rethinking of the relation between science and ideology undertaken by Louis Althusser and a young Alain Badiou in the 1960s. Both Bachelard and Althusser are interrogated for the philosophy of language that underpins their respective visions of scientificity; in turn, the problem of the subject is posed, in part through an investigation of Althusser's inheritance and transformation of Lacanian psychoanalysis.  相似文献   
63.
64.
Behavioral researchers often obtain information about the same set of entities from different sources. A main challenge in the analysis of such data is to reveal, on the one hand, the mechanisms underlying all of the data blocks under study and, on the other hand, the mechanisms underlying a single data block or a few such blocks only (i.e., common and distinctive mechanisms, respectively). A method called DISCO-SCA has been proposed by which such mechanisms can be found. The goal of this article is to make the DISCO-SCA method more accessible, in particular for applied researchers. To this end, first we will illustrate the different steps in a DISCO-SCA analysis, with data stemming from the domain of psychiatric diagnosis. Second, we will present in this article the DISCO-SCA graphical user interface (GUI). The main benefits of the DISCO-SCA GUI are that it is easy to use, strongly facilitates the choice of model selection parameters (such as the number of mechanisms and their status as being common or distinctive), and is freely available.  相似文献   
65.
Researchers have investigated visual search behavior for almost a century. During that time, few studies have examined the cognitive processes involved in hiding items rather than finding them. To investigate this, we developed a paradigm that allowed participants to indicate where they would hide (or find) an item that was to be found (or hidden) by a friend or a foe. We found that (i) for friends more than foes, participants selected the pop-out item in the display, and (ii) when the display was homogeneous, they selected nearby and corner items. These behaviors held for both hiding and finding, although hide and find behaviors were not identical. For pop-out displays, decision times were unusually long when hiding an item from a foe. These data converge on the conclusion that the principles of search and concealment are similar, but not the same. They also suggest that this paradigm will provide researchers a powerful method for investigating theory of mind in adults.  相似文献   
66.
Eye movement sequences??or scanpaths??vary depending on the stimulus characteristics and the task (Foulsham & Underwood Journal of Vision, 8(2), 6:1?C17, 2008; Land, Mennie, & Rusted, Perception, 28, 1311?C1328, 1999). Common methods for comparing scanpaths, however, are limited in their ability to capture both the spatial and temporal properties of which a scanpath consists. Here, we validated a new method for scanpath comparison based on geometric vectors, which compares scanpaths over multiple dimensions while retaining positional and sequential information (Jarodzka, Holmqvist, & Nystr?m, Symposium on Eye-Tracking Research and Applications (pp. 211?C218), 2010). ??MultiMatch?? was tested in two experiments and pitted against ScanMatch (Cristino, Math?t, Theeuwes, & Gilchrist, Behavior Research Methods, 42, 692?C700, 2010), the most comprehensive adaptation of the popular Levenshtein method. In Experiment 1, we used synthetic data, demonstrating the greater sensitivity of MultiMatch to variations in spatial position. In Experiment 2, real eye movement recordings were taken from participants viewing sequences of dots, designed to elicit scanpath pairs with commonalities known to be problematic for algorithms (e.g., when one scanpath is shifted in locus or when fixations fall on either side of an AOI boundary). The results illustrate the advantages of a multidimensional approach, revealing how two scanpaths differ. For instance, if one scanpath is the reverse copy of another, the difference is in the direction but not the positions of fixations; or if a scanpath is scaled down, the difference is in the length of the saccadic vectors but not in the overall shape. As well as having enormous potential for any task in which consistency in eye movements is important (e.g., learning), MultiMatch is particularly relevant for ??eye movements to nothing?? in mental imagery and embodiment-of-cognition research, where satisfactory scanpath comparison algorithms are lacking.  相似文献   
67.
Increasing numbers of counsellors practise using social constructionist (e.g. narrative, collaborative language systems and solution-focused) approaches. Social constructionist theory holds that matters such as 'understanding' are constructed and upheld in human interaction though counselling approaches derived from this theory offer little insight on how this might occur. The present study adopts a theoretically compatible research approach (ethnomethodology and conversation analysis) to empirically examine how understandings were purportedly constructed in counselling interviews. Understanding is depicted in conversational interaction terms, in how speakers make evident to each other that their shared talk is adequate for 'moving forward'. Counsellor and client perceptions of their participation in researcher-selected passages of 'understanding' supplement the analyses. This preliminary study sheds light on some pragmatic considerations useful in practising constructionist forms of counselling.  相似文献   
68.
69.
70.
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