湘鄂川黔边民族体育文化的理论建设与科学化发展探讨

湘鄂川黔边民族体育历史悠久、源远流长、内容丰富、博大精深，积淀着各民族与自然、与社会相抗衡的痕迹，是其各民族人民在各自民族不同的历史进程中创造与发展起来的文化财富，它以其独具特色的民族风格与价值特征屹立于中华民族体育之林。本文利用多学科的理论与方法，多角度全方位池对湘鄂川黔边民族传统体育项目进行审视，探讨了杨筑其理论框架应注意解决的几个问题，指出了它迈向科学化发展之路应采取的具体措施与步骤。     

Effects of Some Additives on the Adhesion of Polyacrylamide Sizes to Fibers

IntroductionPolyacrylamide ( PAM) size is one of the sizeingredients that are commonly used in conventionalfor mulations for warp sizing and paper making .It has theproperties of adhering to fibers and can be capable ofholding fiber together by surface attachment . Comparedwith starches and polyvinyl alcohols , PAM possesses suchcapability as excellent adhesion to cellulose fibers . Thiscapability ,however ,is not due to chemical valence ;but isdeveloped only through hydrogen bonds and Van …     

依法行政的理论内涵与实践原则

依法行政是一种全新的管理理念和管理方式，是依法治国的核心和重点。其理论内涵是：依法行政的主体是行政机关；行政权的来源必须有法律依据；依法行政中的“行政”，主要是指外部行政行为；行政权的行使必须遵守法律；行政机关违法行政，必须承担法律责任。坚持依法行政，必须贯彻教育原则、法律优先原则、权力监督原则、权力救济原则。     

低速气体流动不可压缩性理论解析

通过理想流体定常流动的理论解析,导出了微马赫数下密度的相对变化率与压强、温度的相对变化率的关系式,得到了当M<<1时的低速气体流动问题可视作不可压缩来处理的直观理论解析.     

坚持政治性体现时代性富有创造性--关于高等学校领导班子建设的理论思考

高校领导班子建设是领导班子建设的重要组成部分，是高校党的建设的重要环节，是推动高校改革发展的关键所在。新的历史条件下，高校领导班子建设要坚持政治性，体现时代性，富有创造性，努力把高校领导班子建设成为政治上坚强有力，组织上团结协作，工作上开拓进取，作风上清正廉洁的领导集体。     

郁达夫与小品文

在中国小品文史上,郁达夫是具有里程碑意义的作家.他吸取了晚明小品抒写性灵的精髓,又得力于西方随笔的影响,既有理论的建树,又有独特的美学追求和个人话语.其山水小品既是自然的清丽的画卷,也是自己的人格史、心灵史.他的创作风格对其后山水小品文的发展产生了深远的影响.     

A Theoretical Approach for Estimating Fracture Toughness of Ductile Metals

Fracture toughness is very important when applying Damage Tolerance Design and Assessment Techniques. The traditional testing approach for obtaining fracture toughness values is costly and time consuming. In order to estimate the fracture toughness of ductile metals, the fracture mechanics theory, materials plastic deformation theory and materials constructive relationships are employed here. A series of formulae and a theoretical approach are presented to calculate fracture toughness values of different materials in the plane stress and plane strain conditions. Compared with test results, evaluated values have a good agreement.     

完整理解“必需够用为度”在教学内容构建中用好“加减法”

完整理解“必需够用为度”，有利于处理好高等职业教育理论教学与实践教学的关系和占比问题。文章分析了“必需够用”的基本涵义，提出“必需够用为度”的边界概念，给出了边界的下限和上限。在此基础上，强调在教学内容构建中既要用好“减法”，也要用好“加法”。最后，结合课程对具体教学内容构建进行探讨。     

Transient pressure analysis for the reactor core and containment of a HTGR after a primary loop pressure boundary break accident

The pressure variances in the reactor core and containment of a High Temperature Gas-cooled Reactor (HTGR) after a primary loop pressure boundary break accident determine the structural integrity and safety of the reactor. Based on mass conservation, energy conservation and state equations, explicit formulae for the transient pressure and temperature variances in the pressure vessels were deduced, and a set of differential equations for the transient pressure and temperature variances in the containment were developed. Numerical simulation was also conducted to investigate the transient pressure and temperature variances in the pressure vessels and containment. The results show that energy transformation due to expansion work cannot be neglected. The maximum pressure in the containment could increase by 40 percent due to blockage caused by air in the containment. Detailed numerical simulations of the transient pressure and temperature variance in the reactor core flow passages were also conducted. The results show that the pressures acting on the reactor core and containment are below acceptable values.     

昆翅在飞行中的动态形变

通过理论模化途径研究昆翅在飞行中的动态形变机制.设计翅气动力试验平台,验证翅准静态形变影响气动力的"柔性楔形效应"理论解释.探讨昆翅的变刚度特性表明,弦向刚度分布规律符合二项式函数时具有优越性和现实性,进而指出昆姻结构的变刚度特性是产生高升力的基本条件.建立了柔性翅的简化力学模型,通过坐标变换法求解在气动力和惯性力共同...