固化土强度特性试验研究

应用不同固化剂对加固软土的作用进行了试验，分析和讨论了固l和固2加固土在不同掺入比和龄期时强度的变化规律及应力一应变特性．从整体加固效果分析看出，固2加固土效果优于固l加固土，两种固化土的最佳掺入比在12％～15％，可在软土地基处理和实际工程中应用．     

正态分布下时变参数的报童问题

随着服务业的快速发展和基于时间竞争战略的深化,产品/服务的时效性越来越强。本文扩展了传统的报童模型,以批发价和需求预测精度随时间变化的报童问题为对象,研究市场需求函数为正态分布的报童模型关于最佳订货时点和最优订货量的决策问题。建立了正态分布下时变参数的报童问题的数学模型,通过模型的求解和数值分析,结果显示,与传统的不考虑时间因素的报童模型相比,前者能够增加零售商的收益。     

从美国基础研究发展过程引发的几点思考

分析美国基础研究经费投入的变化过程,以及其经费来源与使用情况,提出了关于我国基础研究发展的若干思考。     

WOMBAT A tool for mixed model analyses in quantitative genetics by restricted maximum likelihood （REML）

WOMBAT is a software package for quantitative genetic analyses of continuous traits, fitting a linear, mixed model; estimates of covariance components and the resulting genetic parameters are obtained by restricted maximum likelihood. A wide range of models, comprising numerous traits, multiple fixed and random effects, selected genetic covariance structures, random regression models and reduced rank estimation are accommodated. WOMBAT employs up-to-date numerical and computational methods. Together with the use of efficient compilers, this generates fast executable programs, suitable for large scale analyses. Use of WOMBAT is illustrated for a bivariate analysis. The package consists of the executable program, available for LINUX and WINDOWS environments, manual and a set of worked example, and can be downloaded free of charge from http://agbu. une.edu.au/~kmeyer/wombat.html     

ISM-CMAP-Combine (ICMC) for hierarchical knowledge scenario in quality engineering education

Quality assurance in engineering education is a multifaceted problem further augmented by the stakeholders of engineering education. Students, parents and employers are rightfully questioning the quality of the curriculum, the instructional delivery, the learning environment, accessibility to learning technologies and equipment, employability as well as the possibilities of lifelong learning and the improvement of knowledge (Karapetrovic 2002 Karapetrovic, S. 2002. Why and how to develop a meaningful quality assurance system in engineering schools. Int. J. Engg. Educ, 18(3): 285–294. [Web of Science ®] [Google Scholar]). The purpose of the study is, therefore, to identify the parameters that influence the quality of an engineering education system and develop an integrated model of hierarchical structuring and a concept map for pre-identified concept elements through a process of iterative-interactive consensus-driven methodology, as advocated by second-generation system design paradigm for evolving knowledge scenario of concepts related to quality engineering education.     

竞技健美操运动的核心力量训练

核心力量是竞技健美操基本姿势和动作的控制因素,对稳定脊柱、骨盆、保持正确的身体姿势,协调平衡,提高竞技健美操运动员的速度、力度、难度和表现力都具有很重要的意义。因此核心力量的训练对竞技健美操运动至关重要。其方法主要是针对躯干深层小肌肉,在不平衡的状态下进行各种负荷的训练。     

论中国队微小优势智取日本队获2010体操世锦赛男团金牌

2008年北京奥运会之后,各国体操队均面临着队伍的调整和人员更新问题,中国男队同样以年轻队员为主,进行重新定位。因此,2010年荷兰体操世锦赛团体冠军,成为人们公认的中、日之争。比赛结果是中国团队以总分274.997分,仅以1.228分的微小优势赢得比赛,原因应归结为中国团队以隐现亮点,主动出击而智取日本队。     

方东美论道家艺术精神

"诗哲"方东美极为重视道家的艺术精神。他以形象的比喻"太空"来描述道家妙不可言的胜境,此真理、真实之"太空"胜境,为道家艺术精神的指向。超越、解放与"坐飞机"升迁等,为道家艺术精神获取的途径。道家艺术精神运转无穷,像"同心圆"扩散一样,产生广泛的影响。     

氢氘原子光谱实验最优参数的确定

为了获得了清晰的氢氘原子光谱谱线,首先确定了对光谱谱线有影响的负高压及狭缝宽度2个实验参量。先选定氢原子的一条谱线,在一定的负高压下,通过改变狭缝宽度来获取不同组光谱谱线,经分析得到理想的狭缝宽度范围。在该范围内选取几条狭缝宽度,分别通过改变负高压来得到理想的最优参数组。实验发现,对于不同的波长最优参数组参数不同,因此又用同样的方法对其他的谱线进行了探究,找到不同谱线的公共最优参数区间,最终获得了清晰的氢原子光谱谱线。     

基于ANSYS的平面应力分析

利用ANSYS软件中的平面应力静力分析功能,采用ANSYS的APDL语言完成了平面应力的内力分析计算.其方法可用于解决其他类型平面应力问题.