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581.
Academic records were obtained for students from two towns in southwestern Ontario who attended their town's major public elementary school from first through eighth grade and then completed their secondary education in each town's only public high school between 1982 and 1986. The evidence showed that students who experienced the most difficulty in mastering the two main areas of the first-grade curriculum (reading and arithmetic) had a much higher probability of leaving high school without graduating and of experiencing serious academic problems while in high school than students who received B to A + marks in first grade.  相似文献   
582.
583.
Companies worldwide are turning to organizational communities of practice (OCoPs) as vehicles to generate learning and enhance organizational performance. OCoPs are defined as groups of employees who share a concern, a set of problems, or a passion about a topic and who strengthen their knowledge and expertise by interacting on a consistent basis. To date, OCoP research has drawn almost exclusively from the community of practice (CoP) literature, even though the organizational form of CoPs shares attributes of traditional CoPs and of organizational teams. Drawing on Lave and Wenger's (1991) original theory of legitimate peripheral participation, we integrate theory and research from CoPs and organizational teams to develop and empirically examine a model of OCoP effectiveness that includes constructs such as leadership, empowerment, the structure of tasks, and OCoP relevance to organizational effectiveness. Using data from 32 OCoPs in a U.S.-based multinational mining and minerals processing firm, we found that external community leaders play an important role in enhancing OCoP empowerment, particularly to the extent that task interdependence is high. Empowerment, in turn, was positively related to OCoP effectiveness. We also found that OCoPs designated as "core" by the organization (e.g., working on critical issues) were more effective than those that were noncore. Task interdependence also was positively related to OCoP effectiveness. We provide scholars and practitioners with insights on how to effectively manage OCoPs in today's organizations.  相似文献   
584.
Researchers are often concerned with common method variance (CMV) in cases where it is believed to bias relationships of predictors with criteria. However, CMV may also bias relationships within sets of predictors; this is cause for concern, given the rising popularity of higher order multidimensional constructs. The authors examined the extent to which CMV inflates interrelationships among indicators of higher order constructs and the relationships of those constructs with criteria. To do so, they examined core self-evaluation, a higher order construct comprising self-esteem, generalized self-efficacy, emotional stability, and locus of control. Across 2 studies, the authors systematically applied statistical (Study 1) and procedural (Study 2) CMV remedies to core self-evaluation data collected from multiple samples. Results revealed that the nature of the higher order construct and its relationship with job satisfaction were altered when the CMV remedies were applied. Implications of these findings for higher order constructs are discussed.  相似文献   
585.
Background. As the development and use of genetic tests have increased, so have concerns regarding the uses of genetic information. Genetic discrimination, the differential treatment of individuals based on real or perceived differences in their genomes, is a recently described form of discrimination. The range and significance of experiences associated with this form of discrimination are not yet well known and are investigated in this study. Methods. Individuals at-risk to develop a genetic condition and parents of children with specific genetic conditions were surveyed by questionnaire for reports of genetic discrimination. A total of 27,790 questionnaires were sent out by mail. Of 917 responses received, 206 were followed up with telephone interviews. The responses were analyzed regarding circumstances of the alleged discrimination, the institutions involved, issues relating to the redress of grievances, and strategies to avoid discrimination. Results. A number of institutions were reported to have engaged in genetic discrimination including health and life insurance companies, health care providers, blood banks, adoption agencies, the military, and schools. The alleged instances of discrimination were against individuals who were asymptomatic and sometimes impacted on other asymptomatic relatives. Few surveyed respondents knew of the existence of institutions such as state insurance commissions or the Medical Information Bureau, Inc., which may play roles in redress of grievances or correction of misinformation. Conclusions. Genetic discrimination is variable in form and cause and can have marked consequences for individuals experiencing discrimination and their relatives. The presence of abnormal genes in all individuals makes each person a potential victim of this type of discrimination. The increasing development and utilization of genetic tests will likely result in increased genetic discrimination in the absence of contravening measures. All authors contributed equally to this work. This work was supported by a grant from the U.S. Department of Energy and funding from the Department of Mental Retardation of the Commonwealth of Massachusetts.  相似文献   
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587.
Jacobson has raised a number of issues about the usefulness of psychotherapy integration. Some of his concerns stem from his doubt that people are capable of change, and some that appear to be the result of a misinterpretation of what constitutes psychotherapy integration. This article attempts to clarify some of these misunderstandings, which seem to be the result of equating psychotherapy integration with the integration of theories. Comments are also made about the research underpinings related to work in this area.  相似文献   
588.
This paper reports the results of an exploratory study comparing the responsiveness of male versus female salespersons to differing leadership styles of female sales managers. Responding triads, made up of one female sales manager and two subordinate salespersons (one male and one female), completed questionnaires assessing the managers' leadership style, the salespersons' satisfaction with supervision, and the salespersons' selling performance. Partial correlational analysis revealed gender differences in the way satisfaction with supervision and performance effectiveness related to the female managers' leadership styles. Male sales force members were most responsive to leaders who displayed individualized consideration and used a transactional style (contingent rewards or management by exception). Saleswomen preferred charismatic leaders and those who were capable of intellectually stimulating methods. The results are discussed and recommendations made for future research.  相似文献   
589.
I appear to be one of the few persons who attended both the colloquium at Princeton titled Construct Validity in Psychological Measurement held in 1979 and the conference at Newport Beach titled Construct Validity: Issues and Opportunities held in 1990. As a discussant for both meetings, I have compared construct validity as seen by participants at the 1979 meetings with construct validity as seen by participants at the 1990 meeting. Comparisons are drawn according to conceptualizations of construct validity, construct va- lidity as scientific inquiry, and construct validity in assessment technology. A most noteworthy conclusion is that these three aspects no longer apply very well to the articles herein that were originally delivered at the 1990 meeting. Instead these articles show strongly that classification according to scientific inquiry versus applications is not possible. Such a conceptual gap no longer seems to exist for construct validity. Instead, these articles as well as the one by Hogan (1991) all emphasize large scale programmatic efforts characterized by approaches driven primarily by conceptualizations derived from construct validity. A secondary theme in these articles emphasizes analysis according to taxonomies at both the predictor and criterion levels. A primary conclusion from reviewing these articles is that construct validity no longer revolves around issues, but it clearly does connote opportunities for future research and applications.  相似文献   
590.
A new form (VI) of the Sensation Seeking Scale (SSS) was developed which separates reports of past experiences from desired or intended future experiences on both Disinhibition (Dis) and Thrill and Adventure Seeking (TAS) factors. Factor analyses were used to select items for the scales. High internal reliabilities were found for the Experience-Dis, Intention-TAS, and Intention-Dis scales, but only moderate reliability was found for the Experience-TAS scale. Retest reliabilities were high for all scales. The Experience-TAS and -Dis scales were highly correlated for males but not for females. The Experience- and Intention-TAS scales were moderately correlated, and the Experience- and Intention-Dis scales were highly correlated for both sexes. Both the TAS and the Dis scales on form V were highly correlated with the corresponding Intention scales on form VI. Uses for the new SS scales in individual assessment are suggested.A copy of SSS form VI may be obtained from the author.  相似文献   
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