金融危机预警报道的缺失与美国新闻的变质     

李德 《新闻与传播研究》2011,(1)

美国媒体金融危机预警报道等方面的缺失和公信力的大幅下降,反映了新自由主义经济政策影响下美国媒体日趋垄断化,导致新闻日益商业化和娱乐化,发生了根本性的质变。  相似文献   

The long-term athlete development model: physiological evidence and application   总被引：2，自引：2，他引：0  

Ford P  De Ste Croix M  Lloyd R  Meyers R  Moosavi M  Oliver J  Till K  Williams C 《Journal of sports sciences》2011,29(4):389-402

Within the UK, the "Long Term Athlete Development" (LTAD) model has been proposed by a variety of national governing bodies to offer a first step to considering the approach to talent development. The model, which is primarily a physiological perspective, presents an advancement of understanding of developing athletic potential alongside biological growth. It focuses on training to optimize performance longitudinally, and considers sensitive developmental periods known as "windows of opportunity". However, it appears that there are a number of problems with this theoretical model that are not necessarily transparent to coaches. Principally, the model is only one-dimensional, there is a lack of empirical evidence upon which the model is based, and interpretations of the model are restricted because the data on which it is based rely on questionable assumptions and erroneous methodologies. Fundamentally, this is a generic model rather than an individualized plan for athletes. It is crucial that the LTAD model is seen as a "work in progress" and the challenge, particularly for paediatric exercise scientists, is to question, test, and revise the model. It is unlikely that this can be accomplished using classical experimental research methodology but this should not deter practitioners from acquiring valid and reliable evidence.  相似文献   

Fundamental movement skill performance of preschool children in relation to family context     

Cools W  De Martelaer K  Samaey C  Andries C 《Journal of sports sciences》2011,29(7):649-660

Evidence suggests the development of fundamental movement skill (FMS) is a key factor in promoting long-term physical activity. Low levels of activity among preschool children and the relationship between physical activity and the development of fundamental movement skills underline the need to determine the factors associated with children's development of such skills. As parents play an important role in the socialization process, the aim of this study was to examine correlates of family and neighbourhood characteristics as well as parental behaviour and beliefs on FMS performance in 4- to 6-year-old preschool children. Relationships between preschool children's FMS performance and family contextual variables were examined within a sample of 846 preschool children. Results identified positive associations of FMS performance with parental education, father's physical activity, transport to school by bicycle, and the high value placed by parents high on sport-specific aspects of children's physical activity. Variables negatively associated with preschool children's FMS performance included father-child interaction in TV-viewing and reading books, the high importance placed by parents on winning and performance in children's physical activity. Furthermore, the ambiguity of associations between FMS performance and parental beliefs underlined its complexity.  相似文献   

Engaging Students with Integrated STEM Education: a Happy Marriage or a Failed Engagement?     

De Loof  Haydée  Boeve-de Pauw  Jelle  Van Petegem  Peter 《International Journal of Science and Mathematics Education》2022,20(7):1291-1313

International Journal of Science and Mathematics Education - The “leaky pipeline” with regard to students’ engagement in Science, Technology, Engineering, and Mathematics (STEM)...  相似文献   

进一步开创敦煌研究的新局面     

马德  马高强 《家教指南》2022,(1):137-142

120多年来,世界范围内敦煌研究取得了一定的成就,为今后的研究奠定了基础。在这个基础上,需要认识敦煌历史文化作为精神财富对人类社会进步发展的价值意义;需要转变传统观念,改进研究方法,开创新的研究局面,促进敦煌事业的发展,为新时代坚持中国特色社会主义建设提供精神支撑。  相似文献   

亲水性废旧轮胎橡胶粉的制备及在固井水泥中的应用     

郭光范  姜德  王爽  张玉平  王宇飞  王建宇 《贵阳学院学报(自然科学版)》2022,17(1):52-57

  相似文献   

Medical and health informatics services during and after the COVID‐19 pandemic should be virtual,tailored, responsive and interactive: a case study in Belgium     

Nele S. Pauwels  Ann De Meulemeester  Alessia Romagnoli  Heidi Buysse  Renaat Peleman 《Health information and libraries journal》2021,38(1):66-71

This is part of a new series in this regular feature regarding trends in the provision of information by health science libraries. By sharing expertise and drawing together relevant trends the series intends to serve as a road map for both health science librarians and health informatics professionals. This article shows how a medical and biomedical research library changed practices, and reassessed user needs for the COVID‐19 emergency. Discusses changes to online education (and collaborative working) to provide user‐friendly services, researcher support tailored to need and re‐visioning library space. J.M.  相似文献   

川南地区页岩气民营化发展调查     

杨红伟  高德  罗自力  刘勇  郑杰  谢启艳 《宜宾学院学报》2014,14(6):62-65

针对我国首个居民使用页岩气镇——宜宾市珙县上罗镇,通过走访、问卷调查、咨询专家及现场考察方式,主要从市场、需求、价格、影响因素等方面进行调查;分析并提出对页岩气开采应减少水资源污染、提供能源补贴,鼓励使用新型能源并积极推进页岩气民营化的进度.  相似文献   

600MW机组对冲燃烧锅炉运行问题分析及解决     

潘存华  彭荣  李德 《巢湖学院学报》2014,(6):104-107

针对某电厂600MW对冲燃烧型锅炉运行出现的问题,理论分析结合试验调整,解决运行出现的问题。结果表明:减小磨煤机分离器挡板开度及燃尽风的旋流强度有助于煤粉在炉内的燃烬;合理的提高运行氧量,可以减少炉膛出口CO数值;调平一次风风速、减小炉内温度场偏差及降低炉膛出口烟气温度可以降低过热器、再热器管壁温度,有效解决管壁超温现象。  相似文献   

改变音乐节拍对脑电功率谱变异的影响及其心理意义     

张德乾  刘健  林梦 《绵阳师范学院学报》2014,(2):56-62

目的旨在探索音乐节拍对大脑活动主要区域信息加工过程中的脑电波谱变异.方法采用自编的音乐播放软件给被试分别播放(42、65、120 BPM)3种音乐节拍的65 dB音乐,每种节拍曲目播放5 min,并采集16脑区的脑电信号进行离线分析.结果 (1)与安静状态相比播放音乐时被试在7个波段的脑电波谱功率显著降低;播放音乐时脑电波谱重心频率向低频段移动,表明疲劳程度增加;(2)改变音乐节拍显著降低α1波频段的功率而增加α2波频段的功率;(3)从频段功率占比看,加快音乐节拍节奏增加高频段脑电波活动,降低节拍节奏增加低频段活动而降低高频段脑电波活动.结论音乐节拍显著影响脑电波谱功率变异,65 BPM的中等节奏音乐有利于注意力集中和放松休息,120 BPM快节奏音乐有利于激活唤醒水平,加快运动,改变音乐节拍增加注意负荷,消耗更多的心理加工资源,其意义有待于进一步探索.  相似文献