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   1656篇
  免费   30篇
  国内免费   1篇
  2021年   16篇
  2020年   20篇
  2018年   29篇
  2017年   24篇
  2016年   34篇
  2015年   19篇
  2014年   23篇
  2013年   183篇
  2012年   29篇
  2011年   45篇
  2010年   32篇
  2009年   41篇
  2008年   63篇
  2007年   70篇
  2006年   55篇
  2005年   43篇
  2004年   60篇
  2003年   67篇
  2002年   54篇
  2001年   20篇
  2000年   21篇
  1999年   28篇
  1998年   24篇
  1997年   24篇
  1996年   25篇
  1995年   18篇
  1994年   23篇
  1993年   21篇
  1992年   25篇
  1991年   29篇
  1990年   24篇
  1988年   18篇
  1987年   17篇
  1986年   20篇
  1985年   18篇
  1984年   21篇
  1983年   19篇
  1982年   26篇
  1981年   21篇
  1980年   17篇
  1979年   29篇
  1978年   22篇
  1977年   29篇
  1976年   24篇
  1975年   21篇
  1974年   15篇
  1973年   20篇
  1971年   12篇
  1970年   14篇
  1967年   13篇
排序方式: 共有1687条查询结果,搜索用时 31 毫秒
11.
There is usually a long period of time between infection with the AIDS virus and manifestation of symptoms. Asymptomatic patients often would benefit from elective surgery for diseases such as arthritis which are unrelated to their infection. The surgeons' decisions to accept the risks to themselves, their spouses, and their operating teams in order to relieve pain and suffering appear to be based upon two covenants; one concerns their role within the doctor-patient relationship, and the other concerns their relationship to what they see as the ultimate meaning in life.  相似文献   
12.

The effects of varying decision outcome dispersion on organizational decision making were investigated under individual and group decision making conditions. Thirty-six female and pg]36 male subjects made decisions for organizational decision scenarios in which outcomes affected primarily the decision maker, people other than the decision maker, or a group of which the decision maker was a member. Subjects rated their levels of perceived risk and confidence in their decisions and made decisions within a simulated context of either a small or a large organization. Results indicated that subjects perceived significantly less risk and more confidence in their decisions when outcomes affected primarily themselves rather than others regardless of whether the decisions were made individually or by a group. Males perceived their decisions as significantly more risky than females. Induced organizational size did not significantly influence decision making.

  相似文献   
13.
Summary Three experiments investigated whether learning action phrases by enacting the denoted action enhances organization or not. In the first experiment it was shown that, compared to a standard learning instruction, enacting did not enhance the clustering of episodic and taxonomic lists, but it did enhance memory performance. Furthermore, the enacting effect was strongest with an unrelated list; in all lists, organization and recall correlated only under a verbal instruction and not under an enacting instruction. In the second experiment, subjects were also informed about the categories of the lists and instructed to use them to learn the items. The organization was enhanced in all cases by this procedure, but the recall performance was enhanced only with a standard learning instruction. Under enacting, information about the categories had no influence. In the third experiment this effect was replicated for a taxonomic list and could be generalized for a motor list, in which categories were in accordance with the similarities of the movement pattern. Here too the explicit category information had an effect only under a standard learning instruction, but not with enacting. We interpret these effects as support for the assumption that enacting does not enhance memory performance by better relational information. Relational information is, on the contrary, less important for recall under enacting than under a standard learning instruction.  相似文献   
14.
Classmate likeability, compromising skill, and temperament (n = 135) and after-school patterns of social interaction (n = 101) were examined for third through seventh grade children who were identified by a binomial probability model as popular, rejected, neglected, or average in the classroom setting. Significant effects were obtained for each type of score. Compared to the other social status groups, popular children were the best liked and rejected children were the least liked; neglected and average children fell between these two extremes. Popular children had higher compromising scores than either rejected or average children, and neglected children had higher scores than rejected children. Compared to average children, rejected children had higher attention and rhythmicity temperament scores. Finally, popular and average children had more neighborhood friends than either rejected or average children, and meglected children had more younger neighborhood friends than did average children. Results are discussed in terms of models of peer social status.  相似文献   
15.
A common criticism of iterative least squares estimates of communality is that method of initial estimation may influence stabilized values. As little systematic research on this topic has been performed, the criticism appears to be based on cumulated experience with empirical data sets. In the present paper, two studies are reported in which four types of initial estimate (unities, squared multiple correlations, highestr, and zeroes) and four levels of convergence criterion were employed using four widely available computer packages (BMDP, SAS, SPSS, and SOUPAC). The results suggest that initial estimates have no effect on stabilized communality estimates when a stringent criterion for convergence is used, whereas initial estimates appear to affect stabilized values employing rather gross convergence criteria. There were no differences among the four computer packages for matrices without Heywood cases.  相似文献   
16.
Combinatorial data analysis: Association and partial association   总被引:4,自引:0,他引:4  
A combinatorial data analysis strategy is reviewed that is designed to compare two arbitrary measures of proximity defined between the objects from some set. Based on a particular cross-product definition of correspondence between these two numerically specified notions of proximity (typically represented in the form of matrices), extensions are then pursued to indices of partial association that relate the observed pattern of correspondence between the first two proximity measures to a third. The attendant issues of index normalization and significance testing are discussed; the latter is approached through a simple randomization model implemented either through a Monte Carlo procedure or distributional approximations based on the first three moments. Applications of the original comparison strategy and its extensions to partial association may be developed for a variety of methodological and substantive tasks. Besides rank correlation, we emphasize the topics of spatial autocorrelation for one variable and spatial association between two and mention the connection to the usual randomization approach for one-way analysis-of-variance.  相似文献   
17.
An extension of Heiderian triadic balance (Heider, 1946, 1958) for quantitative data is presented and an algebraic formula is developed: M′ = m - s - 1, s, m, 1 denoting the smallest, medium, and largest of the relations of a triad; lower values indicating more positive relations than higher ones. M′ can be interpreted as a natural structural characterization of a triad which covers the idea that balance is an interaction effect of attraction and agreement in a triad. The formula is applied to the sociometric ratings (P-O-Q triads) of the members of seven peer-groups. AS predicted, the higher the value of M′ the more the empirical frequencies of triads exceed their expected chance frequencies. The formula is compared theoretically and empirically with other balance models for quantitative data (Osgood and Tannenbaum, 1955; Morrissette, 1958; Wiest, 1965). In the P-O-Q situation the formula presented is shown to be superior to the other models. Finally some substantial problems related to balance are discussed and a second interpretation of M′ is given: M′ is an equal weight linear combination of four functions which can be seen as group forming forces in triads (forces towards group integration, towards tight friendships, and two clique building forces).  相似文献   
18.
For four of six autistic children who underwent intensive behavioral treatment, the nature of their self-stimulatory behavior changed from initial lowlevel motor behaviors (such as rocking, spinning, twirling) to differing kinds of higher-level behaviors (such as lining of objects, echolalic speech, and preoccupation with spelling and numerical values). The children who changed to the highest levels of self-stimulatory behavior also showed the largest gains in treatment (as determined by IQ scores, school placement, etc.). The changes in self-stimulatory behaviors were attributed to the intense teaching of appropriate social behaviors and the explicit therapeutic suppression of low-level, self-stimulatory behaviors. The long-term therapeutic effects of changing from lower-to higher-level forms of self-stimulatory behavior were discussed.This study was supported by a grant from the National Institute of Mental Health (grant MH 11440). We want to express our thanks to the parents who allowed us to study their children. We gratefully acknowledge the assistance of Maria Audero with the design of the weighted measure, and Tracee Parker with the collection of the data.  相似文献   
19.
The religious client presents a particular challenge to the RET therapist in that the irrational beliefs responsible for the client's problems are often created or supported by distortions in the religious belief system. This paper will discuss the connections between religious distortions and the irrational ideas, ways to deal with them, and then present the most common religiously based irrational beliefs along with biblical disputations.Constance Lawrence, M.S., is Director of the Christian Counseling Center in Norwalk, CT, and also has a private practice in Weston, CT.  相似文献   
20.
A sample of 440 full-time employed couples from 11 states was examined to determine the differences between time spent on housework by husbands and wives in rural and urban areas. More time is spent in housework in rural families than in urban families because time spent in housework is greater for rural women than for urban women, while rural and urban husbands' times do not differ. Education of spouses, job status differentials, and age of the younger child do not significantly interact with rural-urban residence and sex of the spouse. However, family income does significantly influence the relationship between time spent on housework for rural and urban husbands and wives.  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