肥胖儿童少年血脂、红细胞膜脂及PS外翻的研究     

赖爱萍 《浙江体育科学》2011,33(4)

目的：通过对肥胖儿童少年血脂及红细胞膜脂及磷脂酰丝氨酸（PS）外翻的研究,探讨肥胖对儿童少年脂代谢的影响,为早期监测儿童少年脂代谢紊乱提供理论依据。方法：64名肥胖儿童少年按体脂百分比分为轻度、中度和重度3组,测定其血脂六项、红细胞膜胆固醇、PS外翻量及膜Na＋K＋-ATPase和Ca2＋Mg2＋-ATPase活性。结果：①肥胖儿童少年的TC水平已超过参考标准的理想水平;②肥胖儿童少年血TG与BMI及WC、WHR明显正相关,其中和前两项指标显著性P≤0.01;③轻度肥胖组PS外翻量与其他两组肥胖者之间存在显著性差异（P≤0.05）,HDL仅在轻度肥胖者和重度肥胖者之间存在显著性差异。结论：肥胖儿童少年血脂出现紊乱的潜在可能,PS外翻异常可能比血脂指标更早表现出来,因此对儿童少年肥胖发展的预测和预防可能会有更大的价值。  相似文献   

关于词汇刻意学习的实证研究     

周玲 《培训与研究》2006,23(4):27-29

本文通过词汇实验来检测刻意词汇学习和伴随词汇学习哪种学习方式更有效,更持久。实验得出的数据显示: 刻意学习比伴随学习更适合高校非英语专业二年级学生,是他们主要的词汇学习方式,而且更有持久性。  相似文献   

俯首于现实 解脱于虚无——评《水泥桶里的一封信》     

张敏生 《安阳师范学院学报》2009,(3):71-74

《水泥桶里的一封信》是日本无产阶级作家叶山嘉树的代表作之一。通过文本分析,可以看到女工的信件中,在包含有可能会给予主人公松户与三积极影响的异质性因素的同时,也包含着有可能会对其产生消极影响的同质性因素。本文在此分析的基础上剖析松户与三的人物形象,并进而挖掘小说中所隐含的深刻主题。  相似文献   

高住低训中EPO变化规律的研究   总被引：2，自引：0，他引：2  

李晓霞 《山东体育学院学报》2004,20(3):52-53

血清EPO(erythropoietin，促红细胞生成素)与红细胞的生成有密切关系。为确切了解EPO在高住低训中的变化规律，将14名大学生分为高住低训组和低住低训组，每组7人。高住低训组每天低压低氧(2500m模拟高度)暴露12小时；低住低训组在实验期间不进行低氧暴露。两组每天在常压常氧环境下进行一次3000m跑训练。实验为期4周。结果表明，促红细胞生成素在间断性低氧暴露初期就有升高变化，1天后出现高峰，这一高EPO水平一直维持到低压氧暴露结束。另外，对第2次低氧暴露完当天出低压氧仓即刻与常氧暴露10h后所测EPO结果的比较表明，常氧暴露后EPO呈下降趋势，说明间断性低氧暴露对EPO生成存在着慢性积累的过程。低住低训组的EPO水平一直比较平稳，说明常氧环境对EPO的分泌无明显影响。  相似文献   

集群企业竞争强度与创新绩效关系的理论与实证——基于集群企业同质化程度的视角   总被引：1，自引：0，他引：1  

杨皎平  刘丽颖  牛似虎 《软科学》2012,26(4):23-27,47

以企业同质化程度来表征企业竞争强度,通过建立数学模型和实证分析研究了集群内部竞争对技术创新的影响。结果显示集群企业内部竞争对技术创新同时具有促进作用和阻碍作用,集群企业的同质化一方面加快了知识溢出进而促进了技术创新,另一方面则诱发了恶性价格竞争进而阻碍了技术创新。随着同质化程度的演变,知识溢出效应和价格竞争效应的力量对比发生变化,最终使得同质化对技术创新产生了一种倒U型的影响。  相似文献   

Applying user analytics to uses and effects of social media in China     

Jonathan J. H. Zhu  Yixin Zhou  Lu Guan  Lei Hou  Anqi Shen  Heng Lu 《亚洲交流杂志》2019,29(3):291-306

ABSTRACT

We introduce what user analytics can do in the first half of the paper and then illustrate how to do user analytics in the second half. In the current context, user analytics refers to a set of diverse communication research methods on uses and effects of social media. User analytics has evolved from TV ratings research to online user research. The history illustrates what data sources, measures, and analyses can be used for what types of research questions under user analytics. We discuss the similarities of and differences between user analytics and other methods of computational communication research (e.g. content mining and online experiments), and compare the strengths and weaknesses of user analytics with traditional quantitative methods (e.g. survey). Finally, we present an application study of Chinese bloggers to demonstrate how to employ user analytics methods to study the production, consumption, and effects of user-generated content.  相似文献   

爱米丽与杜丽娘之比较--兼谈福克纳和汤显祖思想的统一性     

安鲜红  刘开田 《黄冈师范学院学报》2003,23(4):45-48

主要比较分析福克纳的小说《纪念爱米丽的一朵玫瑰花》和汤显祖的戏剧《牡丹亭》,在对作品中的两位女性爱米丽与杜丽娘作简要分析的基础上,从个体与社会的角度,探讨了她们不同命运结局的原因,以及由此展现出来的中西方化的某些异质与同质,指出一个伟大的作家之思想既具有传统性,又具有现代性。  相似文献   

The influence of childhood polyvictimization on disordered eating symptoms in emerging adulthood     

《Child abuse & neglect》2017

Children who endure multiple victimization experiences, or “polyvictims," are vulnerable to maladaptive outcomes. Yet, little research exists evaluating the relationship between childhood polyvictimization and disordered eating symptoms (DES) in emerging adulthood. The current study examines the relationship between childhood polyvictimization and DES in emerging adults. Data were collected from 288 participants across two universities using online self-report measures. Hierarchical regression analyses revealed a significant positive relationship between number of childhood victimization experiences and DES in young adulthood (ß = 0.14; p = 0.016). Female participants were more likely to demonstrate DES (ß = 0.14; p = 0.008). Further, high levels of emotion dysregulation during young adulthood were associated with more DES (ß = 0.33; p < 0.001). Findings suggest that exposure to victimization experiences in childhood increases individuals’ risk for exhibiting DES in young adulthood. Results also highlight the strong relationship between individuals’ emotion regulation abilities and the presence of DES. Findings align with the theory that children who have endured high levels of victimization often feel overwhelmed by their emotions and circumstances, demonstrate emotion regulation difficulties, and may rely on maladaptive coping strategies, including disordered eating, to manage adversities. Study results emphasize the importance of considering victimization history when working with emerging adults displaying disordered eating symptomatology.  相似文献   

基于现金流量法的企业外汇风险暴露度量研究     

谢赤  丁晖  王雅瑜 《湖南师范大学社会科学学报》2008,37(2):97-100

随着中国企业国际化程度的提高,由汇率波动所带来的企业价值变化的外汇风险将越来越大。因此,如何准确而简约地衡量企业外汇风险是一个亟待解决的问题。从这个角度出发,通过实证研究发现现金流量法能较好地度量中国企业的外汇风险暴露。  相似文献   

Understanding Greek Primary School Children's Comprehension of Sun Exposure     

Piperakis  Stylianos M.  Papadimitriou  Vasiliki  Piperakis  Michael M.  Zisis  Panagiotis 《Journal of Science Education and Technology》2003,12(2):135-141

The purpose of this study was to assess Greek primary (1st to 6th grade) school children's understanding of sun exposure during summer vacation. Our results show that children know the damaging effects of long time exposure and the precautions that should be taken during sun bathing (sun glasses, hat, umbrella, sunscreen, etc). Nevertheless, they do not seem to avoid being exposed between 12.00 A.M. and 15.00 P.M., which is the most dangerous time. The socioeconomic status of father has no effect on the attitude of children towards taking protection measures when exposed to the sun, however, the educational status of the mother appears to influence children's reported knowledge and behaviour. Place of residence (urban or rural areas) and gender does not influence their knowledge on the sun's damaging effects and the precautions they should take. Finally, as children grow older they seem to gradually reduce the protective measures they take.  相似文献