等分布

In this paper we introduce a finite element program design method for solving 3 D thoracic electrical field distribution,based on Borland C++ for DOS and using isoparametric element of arbitrary hexahedron.In the process of solving final finite element equation,this paper uses the method of blocking and 'getting big number' to deal with total coefficient matrix and boundary conditions.

本文介绍了一种采用等参数8节点任意六面体单元来求解人体胸腔三维恒定电场分布的有限元程序设计方法，程序的编制基于BorlandC＋＋ForDOS的编程环境，在对最终形成的有限元代数方程的求解过程中采用了分块处理总系数矩阵及"取大数"处理边界条件的方法。

The Pb-Pb isochron of metamorphic argillite in Shuangqiaoshan Group is 1 490±68 Ma, while the Nd mode ages of Zhanggongshan Group, Shuangqiaoshan Group, Chenglang Group and Xiushui Group are 1.57 Ga, 1.89 Ga, 1.77 Ga, 1.60 Ga,respectively, less than 1.6-1.9 Ga, which suggest that they formed in Middle Proterozoic Subera.

研究结果还显示，双桥山群变质泥质岩的Pb-Pb等时线年龄为（1 490±68）Ma，而障公山群、双桥山群、程浪群和修水群的钕模式年龄分别为1.57 Ga、1.89Ga、1.77Ga和1.60 Ga，均分布在1.5～1.9 Ga之间，表明这些地层的形成年龄应小于1.9 Ga，是中—晚元古代的产物，同时表明扬子古陆南缘存在古元古代的基底。

Methods Sequence specific primers-polymerase chain reaction was used for the detection of genotypes and alleles of rs3850641 A/G loci in OX40L gene in 187 PACS cases (≤55 years) and 138 controls. Diseased vessel numbers and stenostic severity integral by coronary arteriogram and serum levels of sOX40L, C-reactive protein and vascular cell adhesion molecule-1 (VCAM-1) by enzyme-linked immunosorbent assay and nephelometry were measured. The relationship between OX4OL gene variants and PACS risk, SSI as well as plasma levels of three cytokines were analysed.

采用聚合酶链反应－序列特异性扩增技术检测187例年龄≤55岁、早发急性冠状动脉综合征患者和138例冠状动脉造影正常者rs3850641位点A/G变异的基因型、等位基因及其分布频率；采用冠状动脉造影测量病变血管支数和狭窄程度积分；应用ELISA法测试血浆sOX40L、血管细胞黏附分子(VCAM-1)；应用散射比浊法测试血浆C反应蛋白水平；分析OX40L基因变异与ACS风险、冠状动脉病变程度和血浆3个细胞因子之间的关系。

The distributions of the chain radius of gyration and the two-dimensional asphericity are measured. It is found that the DNA molecules exhibit highly anisotropic shape even for circular-form and the mean asphericity is chain length independence.

从测量二维的鍊回旋半径分布发现DNA分子展现高度的非等向性的形状(甚至是环形的DNA也具备此特性)且此特性与鍊长无关。

Aligned with cytochrome b sequences from 29 siluriforms in Japan, Korea, Russia, Africa, North America and South America retrieved from GenBank, and selected Astyanax mexicanus, Phenacogrammus interruptus, Cyprinus carpio and Oncorhynchus mykiss as outgroups, which are belonging to Characiformes, Cypriniformes and Salmoniformes, respectively.

所得序列与从GenBank下载的分布于非洲、北美洲和南美洲等地的鲇形目鱼类同一基因序列进行排序，并选用脂鲤目的墨西哥丽脂鲤、断线脂鲤，鲤形目的鲤以及鲑形目大麻哈鱼属的Oncorhynchus mykiss作外类群。

This dissertation is concerned with some problems regarding the asymptotic property of nearest-neighbor density estimator for α—mixing and nagetive quadrant dependent samples. The results extend the corresponding theorems in i.i.d.

本文主要考虑了最近邻密度估计在α—混合序列和两两NQD混合序列情形下的大样本性质，推广了独立同分布和其它相依情形下最近邻密度估计的大样本性质，如相合性、渐近正态性等。

We discuss asymptotically best linear unbiased estimators of the Logistic population based on selected order statistics and give the formula of computing the ABLUE, the variance and the covariance of the ABLUE in limit, and properties of the ABLUE, and so on. We give the optimum chosen of spacing which is the ABLUE with maximum asymptotic relative efficiency based on complete sample when selected order statistics number is less than 10, and obtain its maximum asymptotic relative efficiency.

讨论基于Logistic总体Ⅱ型截尾样本的若干个样本分位数的总体分布参数的近似最佳线性无偏估计；给出了该近似最佳线性无偏估计的计算公式，估计方差与协方差的极限表达式及估计量的大样本性质等；给出了全样本，样本分位点个数固定，但不超过10情形下，使上述近似最佳线性无偏估计有最大相对联合估计效率时，样本分位数选取法及最大相对联合估计效率；为大样本情形下，该近似最佳线性无偏估计的应用提供了理论依据。

This dissertation shows each unstable asymptotic equilibrium point is just the pattern that refuses to be recognized by combining the idea about constraint and projection with the continuous network LSSM and the discrete network BSB, eliminates some shortcomings of LSSM and BSB in the distribution of attraction domain. LSSM and BSB are then improved to be ideal associative memory and can be implemented by circuit.

将约束投影思想与连续神经网络LSSM和离散神经网络BSB相结合，说明了不渐近稳定的平衡点恰是实际中拒识模式，根除了LSSM和BSB在吸引域分布等方面的一些缺点，将它们完善成为理想的联想记忆器，并且它可用电路实现。

They also show that the DSUR estimators have asymptotically mixed normal distribution and the tests of parametric restrictions can be constructed by the Wald statistic which is asymptotically distributed as a chi-square variate.

如Mark et al(2005)等提出了似无关动态协整模型的思想及其估计方法，以此来消除解释变量的内生性影响，并获得了一个标准的渐近分布。

By density functional theory B3LYP method with 6-31G basis set, the geometry and electronic structure of the natural inhibitor and derivatives of Adenylosuccinate synthetase were optimized and their thermodynamic stability was also analyzed. The relationship between their electronic structures and bioactivities were discussed based on the Mulliken bond order, atomic net charge distribution and molecular surface electrostatic potential.

利用密度泛函B3LYP方法选择6-31G基组对腺苷酸琥珀酸合成酶天然抑制剂及其衍生物的结构进行优化，并对其稳定性进行了分析，同时采用Mulliken键序、原子电荷分布、表观静电势等对AdSS抑制剂及其衍生物电子结构与其生物活性相关性进行了理论研究。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。