The objective is to obtain maximize the ready time of the scheme as late as possibility within the constraint that the grade of each jobs in the completion set is not less than a given value respectively 目标是在满足每个工作都以大于等于各自指定的隶属度属于完工集合的约束下，寻找工作的最大最迟开工时间。
For example , at pore - water pressures of zero and greater , ( i . e . below the water table ) , there is a saturated conductivity value ; at pore - water pressures less than zero , ( i . e . above the water table ) , the hydraulic conductivity is zero 比如：当孔隙水压力大于等于0 (如位于水位以下) ，有一个饱和的导水值；当小于0时(如在水位以上) ,导水性为0 。
Transportable gas cylinders - specification for the design and construction of refillable transportable seamless steel gas cylinders of water capacities from 0 , 5 litre up to and including 150 litres - cylinders made of seamless steel with an rm value of 1 100 mpa and above 可运输储气罐.水容量为0 . 5升至150升的可充气可移动的无缝钢储气罐的设计和结构规范. rdownm值为大于等于1100mpa的无缝钢储气罐
In the case of infinite domains , it is proven that there exists a maximal solution x " of a @ x = b such that x * x for every solution x of a @ x = b if the solution set of a @ x = b is unempty and b has an irredundant completely meet - irreducible decomposition . it is also identified that there exists a maximal solution x * of a @ x = b such that x * x for every solution x of a @ x = b if the solution set of a @ x = bis unempty and every component of b is dual - compact and has an irredundant finite - decomposition . in the end , a necssary and sufficient condition that there exists a maximal solution x * of a @ x = bsuch that x * x for every solution x of a @ x = b is given when the solution set of a @ x = b is unempty 当论域为无限集时，证明了如果方程a @ x = b有解且b有不可约完全交既分解，则对方程a @ x = b的每一个解至少存在一个大于等于它的极大解；进一步证明了如果方程a @ x = b有解且b的每一个分量为对偶紧元并有不可约有限交分解，则对方程a @ x = b的每一个解存在一个大于等于它的极大解；最后给出了对方程a @ x = b的每一个解存在一个大于等于它的极大解的一个充要条件及[ 0 ， 1 ]格上方程a @ x = b的解集中存在极大解的一个充要条件。
Compare a lot of face image characteristic vector with face image sets characteristic matrix in order to get their similarity , and find the least value of similarity as threshold . in the detecting phase , compute the similarity between characteristic vector of testing region in gray image and face image sets characteristic matrix , if the similarity bigger or equal to threshold then the testing region is a human face , otherwise is not 然后，用大量的人脸图像的特征向量与人脸图像集特征矩阵比较它们的相似程度，找出值小相似度，并把这个最小相似度作为阈值；在检测阶段，求出灰度图像的待测区域的特征向量与人脸特征矩阵的相似度，若该相似度大于等于阈值，则是人脸，否则不是人脸。
( 4 ) through the hydraulic property experiment of micro - hole lateral pipes of simple sdi in air , it was found that the average pressure of 60 mitre length lateral pipes was at the position of per 40o / o ~ ~ ~ 50 % of the effectual pipe length from the fist micro - hole , major pressure - loss was occurred at the ahead part of half pipe . the pressure uniformity reduced with orifice aperture ? increasing , and the relationship between pressure uniformity and initial water pressure was poor . running under the initial water pressure of 1 . 5 meter , the discharge uniformity reduced with orifice aperture ? increasing , and when the orifice aperture smaller than or equal 1 . 0mm , irrigation uniformity could achieve above 0 . 6 （ 3 ）通过对空气介质中简易地下滴灌的微孔毛管试验研究发现： 60m管长的毛管平均压力水头的位置基本上在距第一孔口的有效管长40 - 45的地方；大部分水头损失发生在毛管的前半部分；压力均匀度随孔径的增大而减小，但与初始工作水头关系不密切；在1 . 5m以下的工作压力下运行，沿程出流均匀度随孔径的增大而降低，当孔径不大于1 . 0mm时，灌水均匀度可以达到60以上；当孔径大于等于1 . 2mm时，灌水均匀度低于50 。
In order to ensure the real - time monitor this design choose special dsp chip and high - efficiency a / d transfer chip , the former ensure the time is enough to complete the calculation . tests proved that this equipment can satisfy the requirement of international standards about harmonic detection 论文提出了基于dsp的电能质量在线检测最小测量系统的设计方案。论证了用于电能质量检测系统的a / d转换器的位数应大于等于16位，才有可能使各次谐波的检测精度达到小于1 %的相对误差。
Abstract by setting up a network model of data aggregation and using a bit - hop metric to quantify energy costs in wireless sensor networks , we formally analyze the problem of area - based data aggregation and obtain that data aggregation will definitely be energy efficient when the relative difference between the average lengths of the two shortest paths , which are from source sensor nodes to the sink and to the aggregation node respectively , is not less than the ratio of data correlation to the number of source sensor nodes 摘要通过抽象出无线传感器网络中区域数据回传的网络模型，定量研究了区域数据聚合的节能条件，证明了先聚合再回传比直接进行数据回传所节省的相对路径长度,如果大于等于数据相关性与源节点个数的比值时，区域数据聚合一定可以节省能耗，并进一步给出了当数据聚合点在网络的不同位置，或数据的空间相关性不同时，区域数据聚合的节能条件。
The concept of good codes and proper codes for both error detection and correction is presented . it is shown that the binary perfect codes and the primitive double - error - correcting bch codes and their extended codes are proper for both error detection and correction . the primitive triple - error - correcting bch codes with length 2 " " - 1 and their extended codes are proper for odd m > 5 , not for even m > 6 本文的主要工作是把目前关于只检错时线性码不可检错误概率的研究推广到同时纠错和检错的情况，获得了同时纠检错时线性码不可检错误概率的解析表达式，提出了纠检错好码和最佳纠检错码的概念，并证明了二进制完备码及其扩展码是最佳纠检错码；纠正两个错误二进制本原bch码及其扩展码是最佳纠检错码；码长n = 2 ~ m - 1 、纠正三个错误本原bch码，当m为大于等于5的奇数时是最佳纠检错码；当m为大于等于6的偶数时，不是最佳码。
Apportioning the land - value of " high building " is a new project that has been brought up in recent years of our country . by systemic analysis of the necessity , the meanings , the theoretic foundations and the principles of apportioning the land - value of " high building " , i probe into the methods of apportioning the land - value of " high building " . on the base of experts " research and practical experience , and according to my own thinking , i bring forward the solution of " the distributive ratio of the land - value of floor " to apportion the land - value of " high building " 同时，对“高层建筑”地价分摊的内涵进行了详细的阐释，本文中“高层建筑”是特指一层以上(大于等于二层)的建筑物，包括高于一层的低层建筑、多层建筑及高层建筑；并提出“高层建筑”地价分摊实际上就是把一个平面地价空间化、立体化的问题，本文所探讨的“高层建筑”地价分摊也正是为了求取一幢建筑中各楼层应分摊的地价，这个地价就是楼层楼面地价； “高层建筑”地价分摊的影响因素和待分摊平面地价的内涵也是我们在进行“高层建筑”地价分摊前应了解的。
