CPA矩阵法用于多组份同时测定的研究——测定波长、波长数目和标准混合溶液数目的选择     

李蕾  刘小明  黄振泉 《赣南师范学院学报》1991,(Z1)

本文研究了CPA矩阵法用于多组份同时测定的条件选择,即测定波长、波长数目和标准混合溶液数目的选择,提出了四条选择原则。研究结果表明,上述条件对计算结果的影响很大。用于NO_2~和NO_3~混合体系的同时测定,所得结果满足微量分析要求。  相似文献   

基于IDL的复杂环境数据处理方法及应用研究     

芮建勋  孙雅荣 《株洲师范高等专科学校学报》2005,10(5):28-30

IDL是第四代面向对象的可视化数据分析语言,它完全面向矩阵进行计算,克服了传统软件基于像素处理数据比较慢的缺点，加快了数据处理速度，在卫星数据的同步处理方面以及海量遥感影像的实时处理、分析及应用中有着很大优势。  相似文献   

矩阵环的理想     

吴毅清 《怀化学院学报》2004,23(2):1-3

证明了 :若Mn(R)是一个单环 ,则R是单环 ;若R是一个有单位元的环 ,则Mn(R)一定是单环 并给出了主理想环I上的矩阵环Mn(I)的全部理想的形式以及上三角形矩阵环一类理想的构造方法 .  相似文献   

关于一般线性群的2—子群的一个定理     

李永福 《湖州师范学院学报》1991,(6)

设X、Y是任意n×n实矩阵,对于矩阵指数函数,一般说,e~X·e~Y≠e~(X+Y),除非〔X,Y)=0.当[x_1y]=(x+y)X-(x-y)Y时,本文通过浩繁的计算,终究得出一个具体的解析函数λ=f(x,y),使得e~X·e~Y=e~(X+Y+λ[X’Y])所得此公式,实际上正是一般线性群GL(n,R)的 2—Lie子群结构的一种表示.  相似文献   

The MMP3 gene in musculoskeletal soft tissue injury risk profiling: A study in two independent sample groups     

A. Gibbon  H. Hobbs  W. van der Merwe  S. M. Raleigh  J. Cook  C. J. Handley 《Journal of sports sciences》2017,35(7):655-662

Matrix metalloproteinase-3 (MMP3) is a mediator of matrix remodelling and a proposed susceptibility locus in the genetic profile of musculoskeletal soft tissue injuries. Therefore, this study aimed to validate the MMP3 gene as a risk marker for these injuries by conducting a case control genetic association study in two independent samples groups. Three previously investigated MMP3 variants (rs679620, rs591058 and rs650108) in addition to the functional promoter variant (rs3025058) were genotyped in 195 Australian control participants and 79 Australian individuals with chronic Achilles tendinopathy. Similarly, 234 South African individuals with acute anterior cruciate ligament ruptures and 232 matched control participants were also analysed. Based on high linkage with the previously associated MMP3 variant rs679620, rs3025058 was inferred and found to be associated with increased risk for Achilles tendinopathy within the South African group (P = 0.012; OR: 2.88; 95% CI: 1.4 to 6.1). Lastly, the 6A-G-C-G haplotype, constructed from the investigated variants, was significantly associated with reduced risk for Achilles tendinopathy (29% CON vs. 20% TEN, P = 0.037) in the Australian group. In conclusion, a signal surrounding MMP3 is apparent with respect to Achilles tendinopathy. However, whether the investigated variants are contributing to injury susceptibility or whether they are merely linked to the risk conferring variants mapping elsewhere within the MMP gene cluster on chromosome 11, still requires refining.  相似文献   

判定向量线牲相关牲的几种方法     

白颉 《太原大学教育学院学报》2013,31(1):96-99

文章主要针对向量线性相关性问题的两种常见题型，提出了相应的、简洁易行的求解方法，并通过例题给予了这些方法的具体说明。  相似文献   

写字灵巧手系统研究     

乔金晶  李志斌  节鹏举  刘浩 《中国科技纵横》2010,(23):39-40

针对6自由度写字灵巧手的研究，设计了一种通过摄像头或键盘录入字符，通过自开发软件控制并实现写字的机械手．实现了机械手从采集信息到实现写字的全智能化过程．经过实际测试，该系统运行稳定，操作简易。  相似文献   

二人减数博弈的取胜策略     

李超 《湘南学院学报》2012,(5):19-20

给出了二人减数博弈的取胜策略及其证明.  相似文献   

Robust adaptive sliding mode control for uncertain discrete-time systems with time delay   总被引：2，自引：0，他引：2  

Yuanqing Xia  Zheng Zhu  Hongjiu Yang 《Journal of The Franklin Institute》2010,347(1):339-357

This paper focuses on robust adaptive sliding mode control for discrete-time state-delay systems with mismatched uncertainties and external disturbances. The uncertainties and disturbances are assumed to be norm-bounded but the bound is not necessarily known. Sufficient conditions for the existence of linear sliding surfaces are derived within the linear matrix inequalities (LMIs) framework by employing the free weighting matrices proposed in He et al. (2008) [3], by which the corresponding adaptive controller is also designed to guarantee the state variables to converge into a residual set of the origin by estimating the unknown upper bound of the uncertainties and disturbances. Also, simulation results are presented to illustrate the effectiveness of the control strategy.  相似文献   

基于多部完全图子图相交关系的池设计     

张瑞雪  李丽 《临沂师范学院学报》2012,(3)

本文在多部完全图上，利用完全予图的相交关系构造了一族池设计，且具有较高的客错性．  相似文献