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   

奥运冠军米斯蒂·海曼的训练特点     

J·R·罗萨尼亚 《体育科研》2003,24(3):62

美国运动员米斯蒂·海曼在悉尼奥运会女子200m蝶泳比赛中击败了该项世界纪录保持者澳大利亚苏珊 ?奥尼尔,爆出了2000年一大新闻。米斯蒂的成功,首先在于确立训练目标:增强肌肉力量,改善身体组成成份。虽然,那时她的体魄已经非常健康、匀称了,体内只有16%的脂肪,但计划要她降到12%。教练员探索她发展肌肉的突破口,为她制订了符合饮食习惯的各组食谱。训练中,主要做带有力量性、平衡性、多关节的和全身的练习,如:下蹲,静力举重,大步行进中的扩胸等练习,以增大肺活量。教练员还为她设计了提高肩后部和上背部的力量、提高腰腹部的力量和改善四头…  相似文献   

文献信息计算机全文全自动标引方法   总被引：3，自引：0，他引：3  

叶志清  刘瑞红  袁庆  胡修兰 《情报学报》2003,22(2):169-172

为了满足越来越细化的文献信息服务的要求 ,必然会最终实现全文全自动标引和主题词检索加关键词全文检索的文献信息处理方法。文章在已研制成功的“计算机辅助标引系统”的基础上 ,提出了全文全自动标引的切词方法、匹配算法、加权校对算法 ,以及为配合切词和算法的要求应该设立的一系列数据库 ,并论述了它们的含义、功能和建库方法 ,提出了一种全新的文献信息全文全自动标引的实施方法。  相似文献   

Book reviews     

Allan Mazur  Charles R. Day  J. W. Grove 《Minerva》1995,33(3):291-302

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Copyright complicance in the electronic age: Conceptual issues     

John R. Garrett 《Publishing Research Quarterly》1991,7(4):13-20

This article focuses on several conceptual and structural issues that are central to copyright compliance in the electronic age. It presumes the development of a national electronic network for storing, organizing, accessing, managing, and charging for information. The article first discusses the implications of constructing a comprehensive electronic “highway,” or Digital Library System (DLS), which would link information to the widespread community of users. It then presents the ramifications of a highly decentralized set of subsystems serving rights holders and users, linked by protocols established by the DLS. A discussion of the implications of digital interchangeability for copyright follows. The article ends with an analysis of alternatives to existing intellectual property rights conveyance systems, and concludes that current ownership structures, and systems for conveying rights and royalties, will remain the foundation for copyright in the electronic world. This article appeared in a slightly different form in theProceedings of the Twelfth National Online Meeting—1991, and is published here with the permission of Learned Information, Inc., Medford, N.J.  相似文献   

A Pastoral Care Teacher's Theory of Action, Interactive Thinking and Effective Teaching Practice     

Anthony H. R. Chittenden 《Pastoral Care in Education》2002,20(1):3-10

Through the employment of a hybrid research model blending concept mapping and stimulated recall methodologies, this study explored the nature of a Pastoral Care Teacher's theory of action; the relationship between those beliefs and ideals and interactive thinking; and specific actions in effectively teaching a Pastoral Care issue. In undertaking the research a group of Year Eight boys at the Anglican Church Grammar School (Churchie) provided the context. The study shows that: (i) the teacher possessed a broad knowledge and understanding of the nature of Pastoral Care at Churchie; and (ii) the lessons undertaken, the pedagogy employed, and the knowledge elicited closely resembled the teacher's philosophies and thinking.  相似文献   

苯乙烯/甲基丙烯酸3-氯-2-羟基丙酯共聚物的合成与表征   总被引：1，自引：0，他引：1  

袁焜  李志锋  吕玲玲 《天水师范学院学报》2006,26(5):10-12

制备了甲基丙烯酸-3-氯-2-羟基丙酯(CHPMA),采用自由基悬浮聚合的方法,使其与苯乙烯进行共聚合,首次合成了苯乙烯/-а甲基丙烯酸-3-氯-2-羟基丙酯线型无规共聚物,并用FT-IR和GPC对共聚产物进行了表征,讨论了聚合条件对产物收率的影响。结果显示该共聚物的数均分子量达到10万以上,其分子量多分散系数为1.72,有望用于极性橡胶(如氯丁橡胶等)与亲水性树脂(如聚丙烯酸、聚丙烯酰胺等)共混的增容剂以制备稳定性良好的特种功能材料——吸水膨胀橡胶。  相似文献   

大鼠不同强度运动对肝细胞凋亡的影响   总被引：25，自引：0，他引：25  

袁海平  孙蓉  史仍飞  刘学 《上海体育学院学报》2001,25(4):31-33

采用流式细胞术及原位缺口末端标记法(TUNEL),检测大鼠肝细胞凋亡;同时检测大鼠红细胞超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)和丙二醛(MDA)的含量.结果发现,运动后肝细胞凋亡增加,且随着运动强度的加大,细胞凋亡百分率升高,反映机体抗氧化能力的SOD、GSH-Px显著降低,而MDA含量显著升高.认为,运动可诱导肝细胞凋亡,而运动后机体抗氧化能力下降,可能是凋亡发生的机制之一.  相似文献   

警惕秦桧站起来     

袁大任 《体育文化导刊》2006,(2):3

秦桧该不该站起来?奥运“举国体制”该不该取消?这不是不搭界的问题。前不久听到一些建言:取消全运会,取消推行“奥运争光”战略的举国体制,淡化为国争光,强化全民健身。其实,全民健身与奥运争光作为国家推行的两套战略,是互为促进的,这一点有目共睹,似乎没有道理将其对立。十运会的负面东西(假赛、兴奋剂等)占十运会比赛总场次尚不足千分之一,怎么就要取消全运会呢?近年来,世界体坛平均每年兴奋剂检测阳性率约为1.6%,而中国体坛的这个数字仅为0.4%,许多国际体育组织人士多次向中国厉行“三严”方针反兴奋剂的显著成效表示敬意,为什么一些人…  相似文献   

How sociology texts address gun control     

William R. Tonso 《Academic Questions》2004,17(2):67-79

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