Cognitive development and instructional theory

The foundations of the cognitive-developmental curriculum movement are briefly examined in this paper. The key features of this movement are the recommendations it makes in three areas: curriculum sequencing, curriculum content, and teaching strategies. Each of these areas is critically examined. It is concluded that the grounds for all proposals are purely theoretical. When the data are considered, they either contradict specific proposals or provide no direct evidence.     

互构、共变与融合:5G时代“移动互联+全民健身”的演进脉络及发展前瞻

媒介技术与健身需求交互建构是5G时代"移动互联+全民健身"的生成机制,供需主体同向共变是其发展状态,多元要素系统融合是其演进趋势,并最终在实践中生成"数字化健身共同体"形态。直面5G时代"移动互联+全民健身"机遇与挑战,探索突围路径：完善体育科技伦理体系,以"人民性"作为衡量技术发展的标准;制定针对性政策法规,协调政策激励与过程监管;做好顶层设计,引导数字健身平台与体育实体产业协同发展;优化资源配置,引进社会力量与新型人才共建全民健身事业;持续推进科技创新,助力健康中国与体育强国建设。     

运动对大鼠骨骼肌CaMKⅡ磷酸化水平及核内PGC-1、HDAC5蛋白含量的影响

目的:研究运动后不同时间大鼠骨骼肌CaMKⅡ磷酸化水平及核内PGC-1、HDAC5蛋白含量的变化,以探讨运动后PGC -1α基因表达时相性变化的调节机制.方法:9周龄的雄性Wistar大鼠(167±4) g48只,随机分成安静对照组(C)和跑台运动后0h、3h、6h、12 h、24h取材组,共6组,每组8只.大鼠进行0坡度的1h跑台运动,跑台速度34 m/min.Western blot法测定蛋白含量及磷酸化水平,RT-PCR法测定基因表达.结果:PGC-1α mRNA含量,运动后即刻变化不显著,运动后3h、6h显著增加,12h虽仍高于对照组,但与6h相比显著降低,24h恢复至安静水平.核内PGC-1 α蛋白含量运动后各取材点均无显著变化.核内HDAC5蛋白含量则在运动后3h、6h下降显著,12h虽仍低于对照组,但与6h相比显著增加,24 h恢复到安静组水平.CaMKⅡ磷酸化水平,运动后0h,3h显著升高,6h虽仍高于对照组,但与3h相比显著降低,12h恢复至安静水平.结论:运动后PGC-1α基因表达的时相性变化可能是由对应时相变化规律的CaMKⅡ通过调节核内HDAC5含量,解除了转录因子对PGC-1α基因转录的抑制而实现.     

我国体育赛事运营的作用力机制和内涵式发展对策研究

随着体育赛事经营规模和数量的不断增加,赛事运营内外因素和环境对其的影响力日渐提升.本研究把体育赛事运营置于社会发展这一大系统中,从体育赛事运营的宏观至微观环境入手,将体育赛事运营的驱动力和制约力相结合来构建赛事运营的作用力机制,并以提升产品力、营销力、决策力、品牌力、赛事资本转换力为着力点,着重发展“5P型的赛事产业”,从内涵式发展推进体育赛事的可持续发展视角寻求提高我国体育赛事经营竞争力的有效途径,通过内涵式发展带动我国体育赛事业的全面腾飞.     

From knowledge to added value: A comparative, panel-data analysis of the innovation value chain in Irish and Swiss manufacturing firms

The innovation value chain (IVC) divides the innovation process into three separate links or activities: knowledge gathering, knowledge transformation and knowledge exploitation. Here, we report a comparative panel data analysis of the IVC in Ireland and Switzerland. Both economies are small, very open and depend significantly on innovation to maintain competitive advantage. In recent years, however, R&D and innovation growth in Ireland has been markedly stronger than that in Switzerland. We investigate these differences through the ‘lens’ of the IVC. Significant similarities exist between some aspects of firms’ innovation behaviour in each country: strong complementarities emerge between external knowledge sources and between firms’ internal and external knowledge. And, in both countries, in-house R&D and links to customers prove important drivers of innovation. Innovation drives productivity growth in different ways in the two countries, however, through product change in Switzerland and through process change in Ireland. Other differences in the determinants of innovation performance linked to ownership and firms’ institutional context emphasise the systemic nature of innovation and the legacy of past patterns of industrial development.     

“晒X”词族探析

＂晒X＂中的＂晒＂源自英语的＂share＂和广东话＂晒命＂,并在沿用或借用共同语中已有的诸如＂晒被子＂、＂晒粮食＂类的＂晒X＂常用构词模式,形成其独特的搭配形式;在词语形式上,＂晒X＂多为三音节谓词性词组。目前人们对＂晒X＂结构的选择,既是经济性、新颖性用词原则的体现,同时又是人们彰显和诉求等社会文化心理的体现。     

安顺市“十二·五”期间人才开发的对策

加强对安顺市"十二·五"期间人才开发的研究力度,通过对人才开发面临的问题及人才需求状况的分析,提出相应的对策措施,对于制定安顺市"十二.五"人才发展规划和安顺市"十二·五"经济社会发展规划,更好地实施人才强市战略,加强对人才的吸引、培养和使用,充分发挥好人才的作用,具有重要的指导意义。     

2,6-二羟甲基-1,7-庚二醇的合成

以丙二酸二乙酯为原料,先与1,3-二溴丙烷发生亲电加成反应,生成1,1,5,5-戊烷端四甲酸四乙酯,用氢化铝锂作还原剂,在-5℃条件下将生成的酯基还原为羟基,合成了标题化合物2,6-二羟甲基-1,7-庚二醇,合成的中间体和目标产物的结构经红外光谱(IR)、核磁共振氢谱(H-NMR)、碳谱(C-NMR)、质谱(MS)和元素分析证实与其分子式相符。     

野生鸟类对禽流感爆发与传播的影响

2003—2005年高致病性禽流感在亚洲、欧洲等多个国家大范围爆发,引起了全世界的关注,并将视线集中在候鸟身上。结合最近疫情,文章对野生鸟类在禽流感爆发和传播中的作用与影响予以简要分析,并提出了建议。     

高校图书馆无线信息平台构建及管理

在介绍无线网络技术的基础上,提出了高校图书馆无线信息平台构建的可行性,并结合实例阐述了基于802．1X接入认证的无线网络环境建设及安全管理方案。