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   20504篇
  免费   12篇
  2021年   2篇
  2019年   3篇
  2018年   3486篇
  2017年   2818篇
  2016年   2247篇
  2015年   187篇
  2014年   69篇
  2013年   76篇
  2012年   562篇
  2011年   2383篇
  2010年   2513篇
  2009年   1468篇
  2008年   1698篇
  2007年   2172篇
  2006年   32篇
  2005年   214篇
  2004年   171篇
  2003年   120篇
  2002年   63篇
  2001年   34篇
  2000年   59篇
  1999年   17篇
  1998年   24篇
  1997年   19篇
  1996年   10篇
  1995年   4篇
  1994年   6篇
  1993年   5篇
  1992年   3篇
  1991年   3篇
  1990年   10篇
  1989年   2篇
  1988年   1篇
  1987年   2篇
  1986年   6篇
  1985年   1篇
  1984年   3篇
  1982年   1篇
  1981年   4篇
  1979年   2篇
  1978年   1篇
  1977年   2篇
  1976年   1篇
  1975年   1篇
  1974年   2篇
  1972年   3篇
  1969年   2篇
  1967年   3篇
  1966年   1篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
Two factors are discussed which have important implications for the issue of paternalism in the neonatal intensive care unit (NICU): the physician's role as advocate for the patient; and the range of typical responses of parents who learn that their neonate has a serious illness. These factors are pertinent to the task of identifying those actions which are paternalistic, as well as to the question of whether paternalism is justified. It is argued that certain behavior by physicians which is often thought to be paternalistic is not in fact so. Furthermore, an argument in defense of paternalism which has largely been overlooked is presented. Examples are given to illustrate how paternalism actually arises in the NICU, and it is argued that paternalism is justified in some cases.  相似文献   
22.
23.
An experiment was conducted to examine the contribution of sensory information to asymmetries in manual aiming. Movements were performed in four vision conditions. In the full-vision condition (FV), subjects were afforded vision of both the hand and the target throughout the course of the movement. In the ambient-illumination-off condition (AO), the room lights were extinguished at movement initiation, preventing vision of the moving limb. In the target-off (TO) condition, the target was extinguished upon initiation of the movement. In a no-vision (NV) condition, ambient illumination was removed and the target was extinguished upon initiation of the response movement. Results indicated that accuracy was superior in the full-vision and target-off conditions and when movements were made by the right hand. Movements made by the right hand were also of shorter mean duration. The magnitudes of performance asymmetries were uninfluenced by vision condition. Analyses of movement kinematics revealed that movements made in conditions in which there was vision of the limb exhibited a greater number of discrete modifications of the movement trajectory. On an individual-trial basis, no relationship existed between accuracy and the occurrence of discrete modifications. These data suggest that although vision greatly enhances accuracy, discrete modifications subserved by vision reflect the imposition of nonfunctional zero-order control processes upon continuous higher-order control regimes.  相似文献   
24.
The advent of automated assessment contains the seeds of both threat and promise for professional assessors. Placing the problem in the historical and sociological contexts, this article examines computer-based test interpretation (CBTI) and the frequently misunderstood role of actuarial data in relation to it. I argue that sound clinicianship is central not only to the development of adequate CBTI systems, but also to the systems' appropriate and skillful use in practice. When properly utilized by otherwise well-qualified clinicians, CBTI can substantially enhance practice.  相似文献   
25.
The essay examines the argument advanced by E.D. Hirsch, Jr., for instituting ‘cultural literacy’ as a fundamental priority of schools. A number of confusions and equivocations in Hirsch's reasoning are identified, and the propensity of his project to indoctrinate is exposed. Among the features of Hirsch's argument shown to be troubling are his shifting construal of ‘language’, his inconsistency about the requirements of cultural literacy, and his uncritical relation to traditional images of the American past and present. The upshot is to raise the question why Hirsch's project has elicited wide support and praise.  相似文献   
26.
27.
How can we explain that an assertion on something perceived can be understood in the same manner by somebody who cannot perceive that scene? This problem bases the interest in computational linguistics in how listener modeling could possibly be harmonized with reference semantics. Mental images substituting real perception appear as a way out. The architecture of the listener model has to be adapted to the creation and use of such pictorial data structures. Furthermore, the relation between the latter and a verbal (i. e., propositional) representation must be understood. The resulting architecture of a listener model with reference semantics can be employed to solve communicational problems from three general classes in a better way, as is demonstrated by an example implementation.  相似文献   
28.
Bystander responses to public episodes of child abuse were surveyed among 269 self reported witnesses. Respondents completed an 80-item self-report questionnaire which inquired into a broad range of events, experiences, and behaviors surrounding naturally occurring incidents of perceived child abuse witnessed in public places. Almost one-half of the sample reported having witnessed at least one event of child abuse in public, but only one out of four witnesses acted to intervene. Data analyses identified 40 statistically significant variables across four categories: characteristics of the bystander, situation, victim, and perpetrator. Results were generally consistent with predictions and findings from previous research on bystander intervention, but a number of new and significant variables were identified that characterized intervention events. Direct and indirect forms of intervention were also distinguished. Implications of the findings are discussed, and educating people to intervene on behalf of abused children is proposed.  相似文献   
29.
Qualitative reviews of the withdrawal literature have reached inconsistent conclusions regarding the strength of the relationship between promotion and turnover. Several issues were addressed in this study which may account for these inconsistencies. First, we differentiate among three distinct operationalizations of promotion: (1) promotion satisfaction; (2) perceptions of promotional opportunity; and (3) actual promotion. We then conduct quantitative reviews using meta-analytic procedures on turnover and the three operationalizations of promotion. We found no significant relationships between promotion satisfaction and turnoveror between perceived promotional opportunities and turnover. However, a significant negative relationship was found between actual promotion and turnover. Theoretical implication of these findings are presented.  相似文献   
30.
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