Delayed Time-to-Degree and Post-college Earnings     

Witteveen  Dirk  Attewell  Paul 《Research in higher education》2021,62(2):230-257

Research in Higher Education - Increasingly, undergraduates take more than 4 years to complete a baccalaureate, a situation widely perceived as a waste of time and money, for students,...  相似文献   

Investigation of Poor Academic Achievement in Children with Duchenne Muscular Dystrophy     

V. J. Hinton  D. C. De Vivo  R. Fee  E. Goldstein  Y. Stern 《Learning disabilities research & practice》2004,19(3):146-154

Duchenne Muscular Dystrophy (DMD) is a neurogenetic developmental disorder that presents with progressive muscular weakness. It is caused by a mutation in a gene that results in the absence of specific products that normally localize to muscle cells and the central nervous system (CNS). The majority of affected individuals have IQs within the normal range, generally with lower verbal than performance IQ scores. Prior work has demonstrated selective deficits on tests of verbal span and immediate memory. For the current study, 26 boys with DMD (and normal intellectual function) and their unaffected siblings were evaluated. Paired comparisons demonstrated that the children with DMD had significantly poorer academic achievement scores than their siblings, even though their vocabulary levels and home and educational environments were comparable. Children with DMD also had more behavioral concerns, physical disabilities, and poorer verbal memory spans. Linear regression indicated that behavioral concerns, executive function, and physical disability did not contribute substantially to academic performance, whereas performance on verbal span did. DMD presents with a selective developmental aberration in verbal span that has wide‐ranging consequences on learning skills.  相似文献   

我国体育用品业未来发展走向初探   总被引：16，自引：0，他引：16  

叶德初  王蓉 《武汉体育学院学报》2001,35(5):39-41

通过对我国体育用品市场需求量,以及体育用品业存在的问题和面临的挑战的分析,认为产业升级是我国体育用品业未来发展的主要走向.  相似文献   

全民健身与普通高校体育教育管理   总被引：8，自引：0，他引：8  

商勇  孙占光  娄德玉 《中国体育科技》2001,37(1):39-41

本研究运用A.E.SAATY教授提出的AHP层次分析法，对高校体育教育管理目标体系进行系统分析，明确了普通高校体育教育管理体系，建立了判断矩阵，并提出了该管理系统第3层目标的19个构成因素。  相似文献   

The relationship between peak height velocity and physical performance in youth soccer players   总被引：1，自引：1，他引：0  

Philippaerts RM  Vaeyens R  Janssens M  Van Renterghem B  Matthys D  Craen R  Bourgois J  Vrijens J  Beunen G  Malina RM 《Journal of sports sciences》2006,24(3):221-230

Longitudinal changes in height, weight and physical performance were studied in 33 Flemish male youth soccer players from the Ghent Youth Soccer Project. The players' ages at the start of the study ranged from 10.4 to 13.7 years, with a mean age of 12.2 +/- 0.7 years. Longitudinal changes were studied over a 5 year period. Peak height velocity and peak weight velocity were determined using non-smoothed polynomials. The estimations of peak height velocity, peak weight velocity and age at peak height velocity were 9.7 +/- 1.5 cm x year-1, 8.4 +/- 3.0 kg x year-1 and 13.8 +/- 0.8 years, respectively. Peak weight velocity occurred, on average, at the same age as peak height velocity. Balance, speed of limb movement, trunk strength, upper-body muscular endurance, explosive strength, running speed and agility, cardiorespiratory endurance and anaerobic capacity showed peak development at peak height velocity. A plateau in the velocity curves was observed after peak height velocity for upper-body muscular endurance, explosive strength and running speed. Flexibility exhibited peak development during the tear after peak height velocity. Trainers and coaches should be aware of the individual characteristics of the adolescent growth spurt and the training load should also be individualized at this time.  相似文献   

体育明星作形象代言人推行品牌产品的战略效应分析   总被引：2，自引：0，他引：2  

乐仁油  王丹虹  庄德  徐志雄 《哈尔滨体育学院学报》2005,23(6)

运动鞋企业是晋江经济的支柱,其发展对晋江经济和体育产业的发展有着重要的意义。值此第七届晋江(国际)鞋业博览会之际,运用文献资料、调查访问、观察及网上查询等研究方法,并运用经济学、广告学等相关学科的一些原理,分析了福建晋江运动鞋企业聘请体育明星作形象代言人推行品牌建设的现状及存在的一些主要问题,并提出了进一步推动晋江运动鞋企业品牌建设的一些对策和建议,以便给当地政府及相关的决策者提供一些理论参考。  相似文献   

每球得分制条件下影响一攻、防反关系的主要因素的研究——兼谈中国女排与世界女排的比较   总被引：3，自引：0，他引：3  

张桂青  张德广  钟霖 《中国体育科技》2002,38(5):27-31

通过对 1998年世界女子排球锦标赛、1999年世界杯女子排球赛与 1999年、2 0 0 0年全国女子排球甲级联赛的研究 ,对每球得分制条件下影响一攻和防反的主要因素进行论证。结果表明 :发球、一传效果、防守效果、不同风格打法和运动员心理素质是影响每球得分制条件下一攻、防反效果的主要因素 ;与世界强队相比 ,中国女子排球队在后排进攻方面存在着显著性差异  相似文献   

The energetics and benefit of an arm swing in submaximal and maximal vertical jump performance     

Lees A  Vanrenterghem J  De Clercq D 《Journal of sports sciences》2006,24(1):51-57

The aims of this study were to investigate the energy build-up and dissipation mechanisms associated with using an arm swing in submaximal and maximal vertical jumping and to establish the energy benefit of this arm swing. Twenty adult males were asked to perform a series of submaximal and maximal vertical jumps while using an arm swing. Force, motion and electromyographic data were recorded during each performance and used to compute a range of kinematic and kinetic variables, including ankle, knee, hip, shoulder and elbow joint powers and work done. It was found that the energy benefit of using an arm swing appears to be closely related to the maximum kinetic energy of the arms during their downswing, and increases as jump height increases. As jump height increases, energy in the arms is built up by a greater range of motion at the shoulder and greater effort of the shoulder and elbow muscles but, as jump height approaches maximum, these sources are supplemented by energy supplied by the trunk due to its earlier extension in the movement. The kinetic energy developed by the arms is used to increase their potential energy at take-off but also to store and return energy from the lower limbs and to "pull" on the rest of the body. These latter two mechanisms become more important as jump height increases with the pull being the more important of the two. We conclude that an arm swing contributes to jump performance in submaximal as well as maximal jumping but the energy generation and dissipation sources change as performance approaches maximum.  相似文献   

体育教学与学生创新能力的培养   总被引：13，自引：0，他引：13  

许德顺 《体育学刊》2002,9(6):100-101

从创新能力形成与发展的理论，阐述体育教学中创新能力的培养基本方法与途径。  相似文献   

The use of personal digital assistants in the health sciences: results of a survey.     

Sandra L De Groote  Marceline Doranski 《Journal of the Medical Library Association》2004,92(3):341-348

OBJECTIVES: The purpose of this study is to determine how personal digital assistants (PDAs) are used on an academic health sciences campus to define the level of training and support the library can provide to the students and faculty. METHOD: A Web-based questionnaire was developed. A total of 1,538 health sciences faculty and residents were sent an email message requesting participation. Data from the returned surveys were analyzed with SPSS. RESULTS: Sixty-one percent of survey respondents used PDAs. The address book, date book, and calculator were the most common uses reported for PDAs. Residents also reported a high use of drug databases on their PDAs. Most survey respondents indicated they would like to learn more about clinical resources for PDAs. CONCLUSIONS: Many opportunities exist for librarians to provide training and support for PDAs, in addition to evaluation and promotion of clinical software for PDAs.  相似文献