大健康视野下老年功能性力量评估——以武汉市老年太极人群为例     

肖剑  邹克宁  李小兰 《武汉体育学院学报》2019,53(2):74-80

采用文献法、测试法、数理统计等方法，以武汉市十三个行政区内528名以太极拳为主要体育健身方式的老年人为样本，以马步蹲起、弓箭步蹲起、肘撑侧桥、肘撑侧桥举腿等与日常生活活动相关联的四个基础动作为测试内容。研究表明，受试人群普遍存在下肢与躯干的功能性力量不足、左右侧肌肉链力量不均衡的问题。虽然样本人群经常进行以太极拳为主要形式的体育锻炼，但在锻炼过程中侧重于套路技能的演练，对功能性力量训练的认识不足及缺乏相应的训练方法，存在科学性盲区，需要引起重视。  相似文献   

The application of inertial measurement units and functional principal component analysis to evaluate movement in the forward 3½ pike somersault springboard dive     

Cherie Walker  John Warmenhoven  Peter J. Sinclair 《Sports biomechanics / International Society of Biomechanics in Sports》2019,18(2):146-162

Based on technological and analytical advances, the capability to more accurately and finitely examine biomechanical and skill characteristics of movement has improved. The purpose of this study was to use Inertial Measurement Units (IMUs) and Functional Principal Components Analysis (fPCA) to examine the role of movement variability (assessed via angular velocity), on 2 divers (1 international level; 1 national) performing the forward 3½ pike somersault dive. Analysis of angular velocity curves during ive-flight identified 5 fPCs, accounting for 96.5% of movement variability. The national diver’s scatter plots and standard deviation of fPC scores illustrated larger magnitudes of angular velocity variability across dive flight. For fPC1 and fPC3, magnitudes of SD variability were 282.6 and 201.5, respectively. The international diver illustrated more consistent angular velocity profiles, with clustering of fPCs scores (e.g., fPC1 & 3 = SD’s of 75.2 & 68.0). To account for lower variability in the international diver, the ability to better coordinate movement sequences and functionally utilise feedback in response to initiation of the somersault position is highlighted. Overall, findings highlight how both IMUs and fPCA can more holistically and finitely examine the biomechanical and skill characteristics of movement sequences with the capability to inform athlete development.  相似文献   

Blogadapting: Adaptation Experiences among Expatriate Bloggers     

Clark Callahan  Jesse King  Audrey Halversen 《Journal of Intercultural Communication Research》2020,49(3):227-241

ABSTRACT

Increased global communication is adjusting traditional models of cross-cultural communication. Specifically, changes in international communication processes have caused increased scrutiny of cross-culture adaptation theory. This is especially true when focusing on the difference between cultural adaptation and functional fitness. The purpose of this research is to address changes in global communications by testing to see if there is a difference between two important theoretical concepts within cross-cultural adaptation theory – linear and non-linear adaptation. Findings indicate that cultural sojourners do not equate cross-cultural adaptation with linear models of functional fitness. Models that equate the two should be revisited.  相似文献   

模板技术制备介观结构材料（英文）     

牛忠伟  杨振忠 《中国科学院研究生院学报》2005,1(6):773-776

模板技术是制备介观尺度下具有多重结构材料的简单有效方法。本工作围绕纳米微球及其组装结构，一维纳米纤维及其组装结构而开展。其中重点关于核-壳结构凝胶微球的制备，并以此为模板制备包覆复合微球和中空微球，实现复合微球的形貌和特征尺寸的控制。通过化学改性对单分散聚苯乙烯胶体微粒进行处理，制备了具有核-壳结构的单分散凝胶粒子。以核-壳结构凝胶粒子为模板，制备了二氧化钛包覆聚苯乙烯核壳结构的复合粒子及其中空的二氧化钛粒子。发现在无机前体的溶胶凝胶过程中，电场能诱导复合粒子表面形成贯穿的多孔结构。同样思路，制备了二氧化硅、导电聚苯胺及其复合的核-壳结构和相应的中空微球。对聚苯乙烯胶体晶进行化学改性，制备了核-壳结构的胶体晶凝胶。以此为模板，与第二种具有响应特性凝胶进行复合，得到了敏感特性的胶体晶凝胶。并研究了此复合凝胶的形态及外场响应特性。以多孔氧化铝膜为模板，制备一维结构及其阵列体系。通过调节孔的润湿性，调节一维结构的形态（纤维或中空结构）并可调节双组分核-壳结构纤维的内外相相反转。  相似文献   

技术创新中的职能分工   总被引：2，自引：0，他引：2  

陈松  冯国安 《科研管理》2005,26(1):24-28

技术创新过程中创新职能的分工导因于市场交易效率的改进与固定学习费用的增加。职能分工经济来源于企业对重复的固定学习费用的节约。当今全球技术创新中新趋势的出现与市场交易效率的改进导致创新职能分工不断深化，使得以技术导入为基础的创新日趋重要。  相似文献   

战略联盟不稳定性的研究现状与展望   总被引：9，自引：0，他引：9  

吴海滨  李垣  谢恩 《科研管理》2004,25(5):46-51

竞争环境的变化使得战略联盟成为企业间合作的一种重要形式，但高达40％—60％的失败率一直是困扰联盟管理的一项难题。本文总结了战略联盟高不稳定性的理论解释和影响因素，并结合学习型联盟与合资企业两种重要的联盟方式探讨了特定联盟形式的不稳定性的特点以及促进联盟稳定的机制设置，在此基础上总结了目前研究的不足和今后研究的方向。  相似文献   

The case for natality in pastoral care and why it matters     

Giles Barrow 《Pastoral Care in Education》2017,35(4):284-292

The author presents the concept of natality for consideration in terms of pastoral care and educational purpose. The discussion identifies significant threats to the future for pastoral care in schools, including the Global Educational Reform Movement and the increasing emphasis on teachers taking charge of discipline in the classroom, at the expense of relational and emotional engagement. The author proposes options for professional development and improvements in school culture with natality as a recurrent reference point in a holistic view of education.  相似文献   

强度高斯分布对四态叠加多模泛函叠加光场和压缩特性的影响     

刘宝盈  陈永庄  杨志勇  王宝珍 《商洛学院学报》2005,19(Z1):59-62

构造了由多模泛函相干态、多模复共轭泛函相干态以及它们的相反态等几率线性叠加构成的多模泛函叠加态光场|ψ*(4)(fj)〉q.利用多模压缩态理论,研究了态|ψ*(4)(fj)〉q的等幂次和压缩特性,发现当腔模总数与压缩次数之积为奇数时,两正交相位分量可呈现互补对称的等幂次和压缩效应,其压缩程度、压缩深度与各模的经典强度和经典相位的空间分布函数等强烈地非线性关联.进一步研究发现,对由经典强度为厄米高斯分布的四个三模光场构成的态|ψ*(4)(fj)〉q,只有第二正交相位分量呈现和压缩效应.  相似文献   

面向对象系统开发模型OOSDM     

乔琳 《中山大学学报论丛》1996,(6)

提出了一种面向对象软件开发模型ｋＯＯＳＤＭ，并介绍了它的基本概念及开发流程  相似文献   

一类三阶泛函微分方程的周期解     

潘立军  陈星荣 《嘉应学院学报》2008,26(3):29-33

利用重合度理论,研究了一类三阶泛涵微分方程x＇＇＇（t）＋a1[x”（t）]^k＋a2[x＇（t）]^k＋a3[x（t）]^k＋f（t,x（t）,x（t—τ））=p（t）的周期解的存在性,得到了周期解存在的充分条件。  相似文献