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In the problem, there are m persons who are to be assigned to do n jobs, and the number of the persons who are assigned to do the jth job is bj, where bj is an unknown positive integer number to be calculated such that djbjej, dj and ej are known positive integer number (j=1,2,…,n) such that ∑nj=1bj=m and m≥n.

考虑一类较一般的最优指派问题：欲指派m个人做n项工作，要求每个人只做一项工作，第j项工作可以由bj个人共同去做，其中bj是待求未知数，满足dj≤bj≤ej(即ej，dj为第j项工作所需人数的上下限)及∑nj=1bj=m，dj，ej为已知常数，j=1，…，n。

First, select four kinds of main risks source from bigly celebrate the main risk in region source, namely the flood, drought, sand-dust weather and petroleum pollution accident, etc. According to the different a request for to habitat, study this 19 kinds of landscapes ecosystem type of the Regional induce for 7 kinds of ecosystems system: Then the marsh of bulrush, lakes and reservoirs , salt alkali wasteland, prairie, island form wood, farmland, town. The difference is proceeded by characteristic according to each type ecosystem to the analysis of four kinds of main risks source, including the certain risk all rate, delimiting the space distribute, analyzing the risk strength to the receptor etc. At proceed the revelation the different from endanger to analyze the inside, this text borrows ecosystem index number that this index sign to reflect primarily habitat the ecosystem meaning of the type of habitat the different from position, with weak an index number to show the destructibility of the habitat, from but compute each ecosystem that is lost by ecosystem system an index number.

首先，从大庆地区主要的风险源中遴选出四种主要的风险源，即洪涝、干旱、沙尘天气和石油污染等；依据不同生物类群对生境的要求，将本研究区域的19种景观生态类型归纳为7种生态系统：即芦苇沼泽、湖泡库渠、盐碱荒地、草甸草原、岛状林、农田、城镇；对四种主要风险源的进行分析，包括确定风险概率，划定空间分布，对风险受体的作用强度分析等；在进行暴露和危害分析中，本文主要借生态指数这一指标来反映不同生境类型的生态意义和地位，以脆弱度指数来体现不同生境的易损性，从而计算出各受体生态系统的生态损失度指数；由于各主要风险物质对风险受体的作用强度是不同的，对形成区域性生态风险的作用大小也有差异，因此本文采用层次分析法对主要生态风险物质进行综合评价，并把判断矩阵排序权值的合理计算问题归为—非线性化问题，并提出用基于遗传算法(GA[5])的层次分析模型进行权重分析；进行风险表征，即综合前面两个阶段的信息，对环境中风险的性质和强度以及风险评价过程中不确定性问题进行分析与描述，并划分出五级生态风险区；最后，根据划分的五级生态风险区的特征，分别提出针对各生态风险区的生态风险管理对策。

At the end of -2006 on four quarters, quarter by quarter to reduce the number of shareholders, after a period of time the ready, on the Topix index over the same period also began in the low start, ushered in a rising prices; then in 2007, the number of shareholders, has begun to trend showed an increase quarter by quarter, but the first three quarters of 2007 alleviate the growing number of shareholders At the same time, the Shanghai index is still of inertia on the red, and all the way to its peak Biao .

在-2006四季度，按季度季度末的2006年，以减少股东人数，经过一段时间的准备期间的同期东证指数也开始在低开始时，在迎来了价格上涨，2007年以后，股东人数，已经开始的趋势显示按季度增加四分之一，但前三四分之二千零七缓解日益增长的股东，同时数，上海指数仍然是惯性的红色，一路飙到了最高点。

In order to reduce calculation error, the frequency distribution of average values is used to compute the mixed distribution's digital features of each component distribution, thereinto, the number of the component distribution is determined by AIC, choose the number that meets the minimum value of AIC as the component number of mixed distribution, and the other parameters are estimated by EM algorithm; Secondly, because each component distribution is corresponding to a kind of major gene genotype, according to the values of the average and variance of the each component distribution, we can use the limit error of the normal distribution to plot each individual into the correspondent component distribution, namely into correspondent major gene genotype. Then we regard each major gene genotype as a treatment level of one-way analysis of variances, and the one-way multivariate analysis of variance is carried out to calculate the covariance matrix of major gene effect, covariance matrix of polygene effect, covariance matrix of environment effect and so on; At last, combining the weights of the each component distribution of mixed distribution, we can calculate the variance of major gene effect, the variance of polygene effect, environmental variance and the genetic gain of the quantitative trait.

为减小计算误差，本研究采用均值的频数分布来计算各成分分布的数字特征，其中成分分布个数根据AIC准则，选择使AIC值达到最小的成分分布个数作为混合分布的成分分布数，分布中其它参数的确定利用EM算法来估计；其次，每个成分分布对应一种主基因基因型，根据各个成分分布的均值和方差，利用正态分布的极限误差将每个个体划分到相应的成分分布中，即相应的主基因基因型中，将每种主基因型作为单因素方差分析的一个处理水平，对其进行单因素的多元方差分析，分别计算主基因效应协方差阵、多基因效应协方差阵、环境协方差阵等参数；最后结合混合分布中各成分分布的权重即各主基因基因型的分离比例，计算主基因效应方差，多基因效应方差和环境方差，以及遗传力等参数，进而计算该数量性状的遗传进展。

The number raised to the logarithm of a designated number in order to produce that designated number.

被升到指定数字的对数上的数量，是为了得到那被指定的数目。

Ochikarawere studied in morphology. The results indicates that the Oochikara has lateral root primordium and lateral root, and RM109 has no those. The number of pericycle cells in protoxylem of RM109 reduces to the 77% of that of Oochikara ; the number of vessel in metaxylem increases, and the number of vessel Ⅰ is the 149% of that of Oochikara ; the number of vessel Ⅱ is the 321% of that of Oochikara ; and the vessels arrange disorderly.

ochikara的冠根组织形态进行比较，结果表明，大力品种可观察到侧根原基及侧根，而RM1 0 9均无；RM1 0 9的原生木质部间中柱鞘细胞数目减少，为大力的 77%；后生木质部导管数增加，其导管I的数量为大力的 1 4 9%，其导管Ⅱ的数量为大力的 3 2 1 %，且导管排列散乱。

The result showed that the optimal condition of inorgano-absorbent manufacture as following: concentration of vitriol is 15%, the bentonite carrier must be soaked in the 0.4% La(superscript 3+) solution, the pH is 10, microwave radiation power is 340 W for 5 min. The optimal condition of organo-absorbent manufacture process as following: concentration of CTMA is 5%. The rate of wave must 166 W and the time of radiation is 6 mi In addition, the experimental results showed that with inorgano-absorbent the pH number is 3~6 and the reaction time is 45 min, the removal efficiency of phosphor will be up to 99% and the amount of adsorption will be up to 41 mg/g. And with organo-absorbent the pH number is 3~4 and the reaction time is 45 min, the removal efficiency of phosphor is more 30% than that of inorgano-absorbent. The removal efficiency of phosphor will be up to 99% and the number of adsorption will be up to 60 mg/g.

实验表明：①制备无机稀土吸附剂的适宜条件为：硫酸浓度15%，镧浓度0.4%，浸渍pH值10，微波功率340 W，辐射时间为5 min；②制备有机稀土吸附剂的适宜条件为：表面活性剂浸泡浓度为5%，微波功率为166 W，微波辐射时间为6 min；③无机稀土吸附剂当溶液的pH值为3~6，振荡时间为45 min时，对磷去除率为99%以上，吸附量达到了41 mg/g以上，有机稀土吸附剂当溶液的pH为3~4，振荡时间为45 min时，其效果比原来镧改性的无机吸附剂吸附量提高了30%，磷去除率为99%以上，吸附量达到了60 mg/g以上。

Conversely, a point P to the right of the origin, whose distance from the origin is d units, shall have as its corresponding real number the positive real number d and, similarly, if Q is a point d units to the left of the origin , then Q shall have as its corresponding real number the negative real number –d.

Conversely，在起源右边的点P，从起源的距离是d单位，将有作为它对应的实数正面实数d和，同样地，如果Q是点d单位在起源左边，然后Q将有作为它对应的实数消极实数–d。

There is provided a portable radio signal transceiver including an annunciator which annunciates a user that there has been a call, a counter which counts both the number of calls having been made in a predetermined period of time and the number of annunciation made by the annunciator when there is a call, a memory storing therein a predetermined condition for locking a dial, the predetermined condition including the predetermined number N1 of annunciation and the predetermined number N2 of calls, and a controller which causes the portable radio signal transceiver to carry out dial-locking, if the numbers of annunciation and calls counted by the counter are equal to the predetermined numbers N1 and N2, respectively.

一种便携式无线电信号收发信机（100），它包括一个通告用户已来呼叫的通告器，一个计数在预定时间内所作的呼叫数和当来呼叫时由通告器所作的通告数的计数器，一个存储用来锁定拨号的预定条件的存储器（105）预定条件包括预定通告数N2和预定呼叫数N2的存储器，以及一个控制器，如果计数器计数的通告和呼叫数分别等于预定数N1和N2，则控制器使便携式无线电信号收发信机执行拨锁。

A2, in the world, the vast majority of AM points per inch of the number of lines in the dot-matrix, only Germany once in a while the number of dots per centimeter line. 150 line represents the inch 150 x 150 line = 22,500 a number of points, higher numbers, the more business card printing and membership card, the more difficult, making the good paper business card printing and membership card making for behaving as a musician of image quality, the use of more than 300 line number would be closer to the continuous tone of the feeling, on the other hand, are coarse thick wire.

A2、在寰宇上，绝不小众数的AM网不面都以每寸有众少线的不面阵来算，只有德国不常以每公分有众少线筹算。150线表示每寸有150×150线=22，500个网不面，数字越不小不面数越众，制卡和会员卡制作越艰难，在好的纸张制卡和会员卡制作后提下可表示很澈底的影像品格，搁置300线以上的线数不离很挨近不断调的发觉，反之，粗纸不离给用粗网线数。

If you are committed to an education career, then the Master of Arts in Education from Ashford University is for you.

如果你是致力于教育事业，那么，艺术教育硕士学位阿什福德大学是给你的。

objective:to explore the expression of survivin protein and its mrna in rectal cancer and their clinic significance.

目的：研究凋亡抑制因子survivin蛋白及其mrna在直肠癌组织中的表达及其与临床病理关系。