宋代厢军兵源述论

宋代厢军兵源多样。具体而言有：镇兵、收编军队、募兵、罪犯等。宋廷通过此多种方式补充其兵源,使其保持一定数量,以发挥应有之作用。     

Some results on the Induced Matching Partition Number of Product Graphs

The induced matching partition number of graph G is the minimum integer k such that there exists a k-partition （V1, V2,…,Vk） of V（G） such that, for each i（1≤i≤k）, G[V1] is 1-regular. In this paper, we study the induced matching partition number of product graphs. We provide a lower bound and an upper bound for the induced matching partition number of product graphs, and exact results are given for some special product graphs.     

列车振动震源产生地震波的采集方法及信号比较研究

通过描述列车振动作为震源所产生地震波的采集方法，对大秦铁路线怀柔段以及京沪铁路线究州段铁路沿线的两次观测试验记录进行了观测系统和信号品质的比较研究，分析了通过宽频地震仪和浅层地震仪所接收火车振动信号的不同特点，为再次开展野外信号采集提出了建议，并预言列车振动将成为铁路沿线进行浅层地震勘探生产中的有效震源．     

利用激光诱导击穿光谱技术定性分析矿石成分

利用激光诱导解析光谱方法,在小型化的实验装置上对铜矿石样品的元素成分进行了检测,定性分析了矿石的光谱特性并检测到包括Cu,Fe,Ca等在内的多种元素。结果表明,激光诱导解析光谱方法是一种潜在的快捷且有效的材料定性分析手段。     

绘制内力图的方法及其在实际工程中的应用

本文阐述了利用杆端弯矩、杆端剪力、杆端轴力三者之间的关系来绘制内力图。这种方法不仅使用于静定结构的梁与刚架,而且也使用于超静定结构的梁与刚架,在超静定结构中它的优点更为突出,因此在工程实际中有着广泛的应用。     

肘关节角度与外负荷的关系

肘关节在做屈伸运动时 ,关节角度与肌力之间存在一个最佳的发力位置。当角度为 90°～ 1 0 0°时 ,肌力的运动效果最佳 ,克服的阻力最大。这个最佳角度与阻力的方向无关。     

不同膝角半蹲跳的生物力学实验研究

介绍了在三维测力台上SJ (SquatJumpTest半蹲跳测试 )测试的基本方法 ,注意事项及条件控制 ,并通过一定样本量 (n =2 0 )对不同膝角的测试结果进行对比分析。着重讨论了最大力值 ,蹬伸时间 ,重心腾空高度等主要生物力学指标的变化规律     

Comparison of different regression models to fit the force–velocity relationship of a knee extension exercise

The aims of this study were to compare the goodness of fit and the concurrent validity of three regression models of the force–velocity relationship in a unilateral knee extension exercise. The force–velocity relationship and the one-repetition-maximum load in the dominant and non-dominant leg were obtained in 24 male sports sciences students by a progressive protocol. Additionally, the maximum voluntary contraction (MVC) of the knee extensor muscles was recorded. Individual force–velocity relationships were obtained by the linear, quadratic polynomial and exponential regression models. Although the adjusted coefficients of determination of all three models were high, the polynomial model’s coefficient was slightly but significantly higher than the rest of the models (p < 0.05), while the standard error of estimate was slightly higher for the linear than for polynomial model (p = 0.001). MVC was underestimated by F ₀ calculated from the linear and polynomial models, while the maximum power was accurately estimated by the linear model. In summary, while the polynomial model revealed somewhat better fit, the linear model more accurately estimates the maximum power and provides the parameters of apparent physiological meaning. Therefore, we recommend using the linear model in research and routine testing of mechanical capacities of knee extensors.     

中国企业对外直接投资的内外动力源研究

联合国贸发会议(UNCTAD)发布的<2006年世界投资报告>指出.来自发展中国家和转型期经济体的外国直接投资(FDI)开始蓬勃兴起.2006年,发展中国家跨国公司对外直接投资额达到了创纪录的1 200亿美元.特别是,中国在吸收外资保持世界领先的同时,自身的对外直接投资也呈现出快速增长的态势,中国跨国公司的崛起已经引起全球瞩目.据此,在分析我国对外直接投资概况的基础上,对我国企业对外直接投资的内外动力源进行了研究,提出了促进我国企业对外直接投资的对策.     

推动开放存取运动之重要力量探析

目前,开放存取运动得到了快速发展,其原因是多种力量主体作用的结果。文章着重从政府部门和科研资助机构、学术科研人员、大学、图书馆、期刊编辑以及软件研发者这几个主体来探讨推动开放存取运动蓬勃发展的重要力量。参考文献8。