最小

The problem of seeking monitor-nodes for measuring the network traffic is regarded as the problem of finding out the minimum weak vertex cover of a graph which is NP-hard.

摘要网络流量监测点问题可以抽象为图的最小弱顶点覆盖问题，而求解最小弱顶点覆盖问题是一个NP难题。

Moreover, it has been proved that weighted sampling can be achieved by multiplying both the spectrum and concentration value of a sample by the same non-negative constant, which has made the computation of sample-weighted models much easier.

为解决以上问题，同时考虑到样品的代表性很难通过考察单个样品进行估计，我们把全局优化样品加权的思想和偏最小二乘相结合，提出了最优化样品加权偏最小二乘这一新算法。

Applied example makes clear, PSO can be solved well have nonlinear the computational precision of the least square method of optimizes problem;PSO computational precision excel that optimize target function or has multi-parameter, define with other and contented standard most the methodological computation precision of zonule condition comparatives, can achieve the result with taller precision and come true simply easily.

应用实例表明，PSO能够很好地解决具有非线性优化目标函数或具有多参数的优化新问题；PSO的计算精度优于最小二乘法的计算精度，和其他满足标准定义的最小区域条件的方法计算精度相当，能够获得精度较高的结果且简单易于实现。

In the second chapter, we present the traditional way of surface fitting ------LeastSquares. We present a kind of amendatory algorithm------Moving Least Squaresbased on Least Squares.

第二章介绍曲面拟合的传统方法——最小二乘法的理论，在此基础上，采用了一种改进的曲面拟合方法——移动最小二乘法。

The idea is to construct a homotopy connection of the identification based on ARMAX model with the one based on ARX model.

由于用以估计 ARX模型参数的误差函数是单峰的，因而没有局部最小点问题，这就使得有可能利用它们之间的同伦关系来解决 ARMAX模型参数的估计中的局部最小点问题。

METHODS:We recorded the cardiogram by perfusing garlicin injection and garlic preparation to the isolated heart of rabbits by Langendorff method,examined the minimum dose of asystole. RESULTS:The minimum fungistatic concentration of garlicin injection was 3～6.2 times lower than that of garlic preparation.

采用Langendorf法对兔离体心脏分别灌流大蒜素注射液、大蒜注射液、大蒜实验液，分别记录心搏图，求出致心脏停搏的最小剂量，结果：大蒜素注射液的抑菌浓度为大蒜实验液的1／6.2～1／3，而致心脏停搏的最小浓度分别为0.1736u／ml和3.919u／ml。

METHODS:We recorded the cardiogram by perfusing garlicin injection and garlic preparation to the isolated heart of rabbits by Langendorff method,examined the minimum dose of asystole. RESULTS:The minimum fungistatic concentration of garlicin injection was 3～6.2 times lower than that of garlic preparation. The minimum dose of garlic preparation is 0.1736 u/ml, and that of garlicin injection is 3.919 u/ml.

采用Langendorff法对兔离体心脏分别灌流大蒜素注射液、大蒜注射液、大蒜实验液，分别记录心搏图，求出致心脏停搏的最小剂量，结果：大蒜素注射液的抑菌浓度为大蒜实验液的1/6.2～1/3，而致心脏停搏的最小浓度分别为0.1736 u/ml和3.919 u/ml。

The model based on minimization cost is more accorded with the actual condition of berth allocation. The importances of ships in port are fully considered in this model. In general, the unit time cost of big ship is higher and that of small ship is lower, so the big ship should be berthed as soon as possible to minimize the sum of costs of the ships stayed in the ports.

基于成本最小的模型更加符合港口泊位资源配置的实际情况，并且充分考虑了船舶的重要性，一般情况下，大船单位时间内的成本相对较高，而小船单位时间内的成本相对较低，故大船应尽可能提前靠泊作业，从而达到所有船舶在港总成本最小。

In Chapter 4, we characterize bicyclic graphs with the smallest values of the second Zagreb index, and if α≥ 1, unicyclic graphs with the smallest value of the general Randic index.

在论文的第四章里，我们给出了双圈图的第二Zagreb指标的最小值和在α≥1时，单圈图的广义Randi指标的最小值。

In this thesis, we mainly study one of the topics in graph theory with applications: the extremal values of unicyclic graphs and unicyclic chemical graphs of the first general Zagreb index;the extremal values of bicyclic graphs of the second Zagreb index;the extremal values of unicyclic graphs of the general Randic index.

本论文主要研究了图论及其应用中的一个方面：图论在化学中的应用-单圈图以及化学单圈图的第一广义Zagreb指标的极值，双圈图的第二Zagreb指标的最小值以及单圈图的广义Randi指标在某个范围的最小值。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。