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Whereas modest familial aggregation of VO2max has been documented after controlling for variables such as physical activity habits, the effect of adjustment for moderating variables has not been directly tested. This issue was addressed in 95 Anglo and 111 Mexican-American families who underwent submaximal cycle ergometer testing. Zero-order correlations of predicted VO2max between pairs of family members were generally weak for both Anglo families (r = 0.04 to 0.35) and Mexican-American families (r = 0.03 to 0.50). Five of 12 correlations were significant. Similar results were found for combined ethnic groups. Adjustment for age, physical activity, and body mass index by partial correlation had few significant effects on aggregation of predicted VO2max. Adjustment for body mass index produced significant decreases in the correlation for Anglo spouses and mother-older child and sibling pairs in the combined group. Although influential moderating variables were not identified, body mass index was found to be a significant, though inconsistent, mediator of aggregation of VO2max. Genetic factors were not strongly supported because of generally weak aggregation in the two ethnic groups.  相似文献   
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Abstract

This article presents the theoretical basis and methods for the process and outcome evaluations of the Rhode Island Early Childhood Summer Institutes held in 2000 and 2001. The article also discusses the evaluation results that demonstrated the institutes were received as high‐quality inservice professional development programs in which participants made significant knowledge gains. Additionally, the influence of the evaluations on the institute programs held in 2000 and 2001 as well as the impacts on the planning of future institutes are described. These evaluation studies can serve as models to others planning evaluations of professional development programs. © 2004 Elsevier Inc. All rights reserved.  相似文献   
615.
Most Soviet applied research and development (R&D) is performed by organizations of industrial branch ministries. Pricing of applied R&D begins with calculations of costs. which are often inflated. Soviet specialists disagree on whether R&D prices should include a profit above cost, and, if so, how the profit should be determined. Current pricing schemes for applied R&D include profits based on planned wage cost, on planned total cost, or on the economic effect of the R&D.The use of the last pricing method is analyzed and evaluated in detail. In principle this method creates incentives for timely delivery of high quality R&D results suitable for assimilation into production. However, in practice the strength of these incentives is considerably weakened by a number of factors.  相似文献   
616.
This content analysis includes 230 peer‐reviewed articles regarding teaching and learning published in journals of the American Counseling Association and its divisions between January 2001 and December 2010. Results include examination of focus, pedagogical foundations, and the methodologies used. Implications for the scholarship of teaching and learning in counselor education are discussed.  相似文献   
617.
Research Findings: Despite the abundance of research suggesting that preschool classroom quality influences children's social-emotional development, the equally important and related question of how characteristics of children enrolled in a classroom influence classroom quality has rarely been addressed. The current article focuses on this question while also considering teacher stress as a mediator of the relationship between child behavior problems and classroom emotional climate. Data came from 2 low-income samples. Ordinary least squares regression revealed that higher levels of child externalizing behavior problems in the fall predicted higher teacher stress in the spring. Teacher stress was nonlinearly related to classroom emotional climate in the spring: Moderate levels of teacher stress were associated with higher (i.e., more positive) classroom emotional climates, and low and high levels of teacher stress were associated with lower classroom emotional climates. Contrary to expectations, higher levels of child externalizing behavior problems were related to higher classroom emotional climates. There was no evidence that teacher stress mediated this relationship. Practice or Policy: These results are discussed in terms of strategies to reduce the disruptive influence of child behavior problems on the classroom emotional climate as well as strategies to limit high levels of preschool teacher stress.  相似文献   
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Abstract

The aim of this study was to examine participant and scheme characteristics in relation to access, uptake, and participation in a physical activity referral scheme (PARS) using a prospective population-based longitudinal design. Participants (n = 3762) were recruited over a 3-year period. Logistic regression analyses identified the factors associated with the outcomes of referral uptake, participation, and completion (≥80% attendance). Participant's age, sex, referral reason, referring health professional, and type of leisure provider were the independent variables. Based on binary logistic regression analysis (n = 2631), only primary referral reason was associated with the PARS coordinator making contact with the participants. In addition to the influence of referral reason, females were also more likely (odds ratio 1.250, 95% confidence interval 1.003 – 1.559, P = 0.047) to agree to be assigned to a leisure provider. Referral reason and referring health professional were associated with taking up a referral opportunity. Older participants (1.016, 1.010 – 1.023, P < 0.001) and males were more likely to complete the referral. In conclusion, the PARS format may be less appropriate for those more constrained by time (women, young adults) and those with certain referral reasons (overweight/obesity, mental health conditions). More appropriate targeting at the point of referral could improve participation rates by revealing or addressing barriers that might later result in dropout.  相似文献   
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Abstract

Given that males and females respond differently to endurance-based tasks, prolonged putting practice may provide an avenue to examine gender-related differences in golf swing kinematics. The aim of this project was to determine if 40 min of putting affects thorax and pelvis kinematics during the full swing of males and females. Three-dimensional trunk kinematics were collected during the swings of 19 male (age: 26 ± 7 years, handicap: 0.6 ± 1.1) and 17 female (age: 24 ± 7 years, handicap: 1.4 ± 1.7) golfers before and after 40 min of putting. Angular displacement at address, top of backswing and ball contact for the pelvis, thorax, and pelvis–thorax interaction were calculated, in addition to the magnitude of peak angular velocity and repeatability of continuous segment angular velocities. Female golfers had less pelvis and thorax anterior–posterior tilt at address, less thorax and thorax–pelvis axial rotation at top of backswing, and less pelvis and thorax axial rotation and pelvis lateral tilt at ball contact pre- to post-putting. Analysis of peak angular velocities revealed that females had significantly lower thorax–pelvis lateral tilt velocity pre- to post-putting. In conclusion, an endurance-based putting intervention affects females’ thorax and pelvis orientation angles and velocities to a greater extent than males.  相似文献   
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