Effectiveness of the PPVT-R for screening gifted students     

Dan Wright 《Psychology in the schools》1983,20(1):25-26

The PPVT-R and the WISC-R were administered to a sample of 35 students, grades 1 through 8, who were nominated for possible participation in gifted programming. The correlation between the PPVT-R and Full Scale IQ was .27, which probably was affected by the restricted range of ability assessed. The PPVT-R showed modest incremental effectiveness beyond informal referral procedures in predicting toward a WISC-R criterion score.  相似文献   

库恩思想中的社会学转向     

万丹  石少虎 《湖南师范大学社会科学学报》2007,36(6):83-86

科学哲学中的社会学转向肇始于库恩,表现为从社会学的维度来建立科学划界标准、理论选择标准、真理观和科学发展图景等方面.库恩以此来反对传统科学哲学以逻辑和经验为基础的实证主义,并开启了科学哲学的新方向.  相似文献   

Optimized versus corrected peak power during friction-braked cycle ergometry in males and females     

James DV  Wood DM  Maberly TC  De Ste Croix M 《Journal of sports sciences》2007,25(8):859-867

The aim of this study was to compare optimization and correction procedures for the determination of peak power output during friction-loaded cycle ergometry. Ten male and 10 female sports students each performed five 10-s sprints from a stationary start on a Monark 864 basket-loaded ergometer. Resistive loads of 5.0, 6.5, 8.0, 9.5, and 11.0% body weight were administered in a counterbalanced order, with a recovery period of 10 min between sprints. Peak power was greater and occurred earlier, with less work having been done before the attainment of peak power, when the data were corrected to account for the inertial and frictional characteristics of the ergometer. Corrected peak power was independent of resistive load (P > 0.05), whereas uncorrected peak power varied as a quadratic function of load (P < 0.001). For males and females, optimized peak power (971 +/- 122 and 668 +/- 37 W) was lower (P < 0.01) than either the highest (1074 +/- 111 and 754 +/- 56 W respectively) or the mean (1007 +/- 125 and 701 +/- 45 W respectively) of the five values for corrected peak power. Optimized and mean corrected peak power were highly correlated both in males (r = 0.97, P < 0.001) and females (r = 0.96, P < 0.001). The difference between optimized and mean corrected peak power was 37 +/- 30 W in males and 33 +/- 14 W in females, of which approximately 15 W was due to the correction for frictional losses. We conclude that corrected peak power is independent of resistive load in males and females.  相似文献   

Relationship between maximal oxygen uptake and oxygen uptake attained during treadmill middle-distance running     

James DV  Sandals LE  Draper SB  Wood DM 《Journal of sports sciences》2007,25(8):851-858

Traditionally, it has been assumed that during middle-distance running oxygen uptake (VO2) reaches its maximal value (VO2max) providing the event is of a sufficient duration; however, this assumption is largely based on observations in individuals with a relatively low VO2max. The aim of this study was to determine whether VO2max is related to the VO2 attained (i.e. VO2peak) during middle-distance running on a treadmill. Fifteen well-trained male runners (age 23.3 +/- 3.8 years, height 1.80 +/- 0.10 m, body mass 76.9 +/- 10.6 kg) volunteered to participate in the study. The participants undertook two 800-m trials to examine the reproducibility of the VO2 response. These two trials, together with a progressive test to determine VO2max, were completed in a randomized order. Oxygen uptake was determined throughout each test using 15-s Douglas bag collections. Following the application of a 30-s rolling average, the highest VO2 during the progressive test (i.e. VO2max) was compared with the highest VO2 during the 800-m trials (i.e. VO2peak) to examine the relationship between VO2max and the VO2 attained in the 800-m trials. For the 15 runners, VO2max was 58.9 +/- 7.1 ml x kg(-1) x min(-1). Two groups were formed using a median split based on VO2max. For the high and low VO2max groups, VO2max was 65.7 +/- 3.0 and 52.4 +/- 1.8 ml x kg(-1) x min(-1) respectively. The limits of agreement (95%) for test-retest reproducibility for the VO2 attained during the 800-m trials were +/- 3.5 ml x kg(-1) x min(-1) for a VO2peak of 50.6 ml x kg(-1) x min(-1) (the mean VO2peak for the low VO2max group) and +/- 2.3 ml x kg(-1) x min(-1) for a VO2peak of 59.0 ml x kg(-1) x min(-1) (the mean VO2peak for the high VO2max group), with a bias in VO2peak between the 800-m runs (i.e. the mean difference) of 1.2 ml x kg(-1) x min(-1). The VO2peak for the 800-m runs was 54.8 +/- 4.9 ml x kg(-1) x min(-1) for all 15 runners. For the high and low VO2max groups, VO2peak was 59.0 +/- 3.3 ml x kg(-1) x min(-1) (i.e. 90% VO2max) and 50.6 +/- 2.0 ml x kg(-1) x min(-1) (i.e. 97% VO2max) respectively. The negative relationship (-0.77) between VO2max and % VO2max attained for all 15 runners was significant (P = 0.001). These results demonstrate that (i) reproducibility is good and (ii) that VO2max is related to the %VO2max achieved, with participants with a higher VO2max achieving a lower %VO2max in an 800-m trial on a treadmill.  相似文献   

高职院校多校区图书馆管理服务工作的探讨     

朱丹  齐慧敏 《包头职业技术学院学报》2016,(3)

随着学院招生的扩大,新校区设立,就形成了地理位置上分散的多个校区并存现象,如何在每个校区合理配置文献资源,最大限度满足读者的需求,提高图书文献的利用率.本文从我院图书馆实际出发阐述实现文献资源共享和优势互补是高职学院图书馆急需认真思考的问题.  相似文献   

基于竞争优势理论的我国竞技体育发展战略问题探析     

钟明宝  张春燕  史丹  王玉珠  侯学华 《北京体育大学学报》2016,39(9):1-11

摘要：以竞争优势理论为指导,以我国竞技体育发展战略的相关问题问为研究对象,运用文献法和数理统计法进行定性分析与定量判断,旨在通过特异性的持续发展,创造优于竞争对手的高收益。研究认为：1）我国竞技体育有着不可替代的价值,但存在高成本低效益、国际体育竞技竞争和体育事业其他领域资源竞争问题,关注资源配置的效益是我国竞技体育今后发展的目标和管理的基本理念;2）以成本优势战略为指导,我国竞技体育的发展首先应该有明确的目标定位,结合我国竞技体育发展的要素水平,以22~26枚奥运金牌为我国竞技体育发展的基本目标;3）在项目选择上,以跳水、乒乓球、羽毛球、体操（含蹦床）、射击、举重柔道和跆拳道为优势发展的项目,实施歧异化发展;4）发展战略设计以优势项目和国家队等重点管理领域为工作重点,进行分类管理,合理配置国家、市场与社会资源,实现发展目标积聚。与此同时,在竞技体育投入渠道、资源分配、管理体制、“国内练兵,一致对外”竞争理念方面简要阐明了自己的观点。  相似文献   

A comparison of the criterion-related validity (academic achievement) of the WPPSI and the WISC-R     

Cecil R. Reynolds  Dan Wright  Leon Dappen 《Psychology in the schools》1981,18(1):20-23

Correlations of WPPSI IQs with concurrently administered subtests from the WRAT were compared with analogous WISC-R/WRAT correlations in a group of children referred by regular classroom teachers for school psychological services. Although the magnitudes of all correlations were reduced, due to restriction of range, the comparisons indicated no significant differences in the magnitudes of the correlations of the WPPSI and the WISC-R with the WRAT. These results support the use of the two instruments as equivalent predictors of achievement.  相似文献   

我国高等教育大众化实施特点及影响研究——专业及招生的视角     

罗丹 《黑龙江高教研究》2007,(6):15-18

我国高等教育大众化的实施有三个鲜明的特点:以普通本科院校为主体;依靠专业点的增设而不是专业种数的增加和倚重人文社会科学类专业的发展来实现大众化。在这一过程中,各高校主要通过新增大量专业来消化学生,由于新设专业以招生数大的社会热门专业为主,导致高校专业设置趋同化,办学特色不明显。地方院校在基础薄弱的情况下,无法及时巩固新设专业,出现了专业招生大起大落或新设专业迅速停招等不稳定现象。明确这些,对于把握我国高等教育的未来发展有着十分积极的意义。  相似文献   

基于VB.NET和SQL Server的综合档案管理系统的设计与实现     

耿冬茹  李丹  赵占坤 《河北软件职业技术学院学报》2007,9(2):63-65

随着信息技术的不断发展,提高管理效率是高等院校的工作重点.本文以河北软件职业技术学院综合档案管理系统开发为例,对系统的设计与实现方法进行介绍.  相似文献   

伽利略的实验思想评述     

刘丹 《贵阳学院学报(自然科学版)》2006,1(2):5-7,11

伽利略善于运用理论思维指导实验选题,同时把实验和数学进行有机结合,依靠逻辑推理,并用实验来检验,构成一整套的实验科学方法.他设计的实验构思巧妙,蕴涵着丰富的实验思想,其卓越的实验思想及由此发展起来的物理学探索方法,为近代物理学奠定了基础.  相似文献