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At the same time, combining with the actual condition of delivery pipeline of our country and some prevalent leak detection and location methods, this paper raised a method, which is based on wavelet analysis and negative- pressure-wave to detect and locate the leakage. Jobs in the paper are as follows:As affected by gas density, pressure, specific heat and pipe material, the velocity of negative-pressure-wave improved depending on the energy conservation. At one time, taking the affection of velocity of gas flow, the location formula was modified in some degree.When locating the leaks with location formula, the iterative approach algorithm was adopted as a new method to increase the location accuracy level of system.Multi-scale decomposition and reconstruction of wavelet transform is utilized to filter the noise of negative-pressure-wave, which was brought by leakage. With the capacity to detect the signal singularity fast and accurately, wavelet transform was used to catch the break point of pressure signal. The work improved the accuracy of At in location formula, accordingly improved the location accuracy.Wavelet is a suitable tool for signal analysis. The distinct character is that the mother-wavelet is of optional. That means choosing different mother-wavelet will get different analysis result. So we studied how to choose mother-wavelet and its scale for signal singularity detection. The method is to choose a wavelet by regularities of the wavelet and the signal.Finally, a plan, which bases on SCADA system for inspection and detection of natural gas leakage, is proposed in the article.

其中，主要进行了以下几方面的工作：针对泄漏产生的负压波在管道中的传播速度受媒介的密度、压力、比热及材质等因素的影响，而非声波在空气中传播的速度，本文利用能量守恒原理，对其进行了修正；考虑到管内气体流速对压力波速的影响，对原始的负压波定位公式进行了一定程度的改进，并在利用定位公式进行泄漏点定位时采用逐步迭代逼近算法，提高了系统的定位精度；利用小波变换的多分辨率分解和重构技术，对采集到的管道发生泄漏时产生的负压波信号进行了降噪处理；并利用小波变换技术对信号奇异点的快速、准确的识别能力，对经上述消噪后的负压波信号进行了奇异点捕捉，精确捕捉的结果提高了定位公式中上下游站点采集到的负压波奇异点的时间差△t的精度，从而进一步提高了定位的精度；考虑到小波变换是一种基波可变的信号分析工具，也就是说，不同的小波基波对信号分析的结果将有很大差别，这势必影响最终的处理结果，因此，我们又对比分析了本课题中小波基及尺度的选择问题，依据规则性系数相似性原理对母小波的选择进行了探索性研究；最后，还提出了基于SCADA的泄漏检测与定位系统的软件开发构想及系统的嵌入方案。

Really rich flavor of the times, although I have been divorced for two years, the taste alone can not say it with style to accompany me with a computer, online dating is also good, single men and women friends, get online to surf, I just love the site benefits who, if we do not believe, listen to me Go on, slugger, 38 this year, on-line called line of cucumber, this is to date today, so my network has never met his girlfriend, her name is dog tail Flowers, estimated that she and I like the Internet is also used false names, there is still a minute, happy time is coming, online dating, there are strange mystery, love letters daily see, can look like you have to guess, I wish I This his girlfriend looks like a fairy, do not like ugly, my friends, I would patiently waiting for her to come here, beautiful this year, 38, called the dog's tail flowers online today, to this date, so my ex-boyfriend, line child cucumber, 30 seconds short of a happy time is coming, God of the Internet in particular, saw a love letter but not people, like he looks like Andy Lau, Do not like Gong Hanlin

真是富有时代气息，虽然本人离婚已两年，孤独的滋味没法说，带式又带电脑陪伴我，网上恋爱也不错，单身的男女朋友们，赶快上网去冲浪，我就是恋爱网站的受益者，如果大家不相信，听我接着往下说，猛男、今年38，网上名叫线黄瓜，今天到此是来约会，等我那从未见过面的网络女友，她的名字叫狗尾巴花，估计她和我一样，网上用的也是假名字，还差一分钟，幸福的时刻就要来临，网上谈恋爱，神秘有奇怪，情书天天见，可模样你得猜，但愿我这位女友长得像天仙，可别像丑八怪，朋友们，我还要在这里耐心等她来，美女今年，38，网上名叫狗尾巴花，今天到此来约会，等我的网络男友，线儿黄瓜，还差30秒，幸福时刻就要降临，网上特别神，只见情书不见人，愿他长得像刘德华，千万别像巩汉林

It solves the problem that the unitary contour presentation can not correctly extract face contour in a face image which suffers from scale, rotation etc. The definition of the internal and external energy function is provided. At the same time, the global matching algorithm and local matching algorithm is given. The experiment shows that this presentation and the accompanying matching algorithm can be used to extract the face contour very well. So the image segmentation can be implemented by using it.②By analyzing the recognition principle of PCA method, we can conclude that the face images coming from different surrounding consist of different face image space. This is the essential reason that makes the generality of PCA method worse. Also, we give a measurement means to measure the distance from different face image space, so we can analyze face image space more conveniently.③We also construct various scale models and rotation pose models to detect the scale and rotating angle of face image to be recognized. The experiment results show that the detecting precision is very high. So it is good for face image feature extraction and face image representation.④Similarly, we construct local feature models of face image and utilize them to detect the local feature of face image. At the same time, we put forward a novel face image local feature detection algorithm, locating step by step. The experiment results show that this method can accurately detect the location of local face feature in a image.⑤A novel face image presentation model, dual attribute graph , is put forward. Firstly, it utilizes attribute graph to present the face image, then exact the local principal component coefficient and Gabor transform coefficient of thc pixels which corresponds to the nodes of the graph as the attribute of the nodes. This representation fully makes use of the statistical characteristic of the local face feature and utilizes Gabor transform to present the topographical structure of face image. So DAG has more general property.⑥Based on the DAG presentation, we give a DAG matching function and matching algorithm. During the design of the function and algorithm, the noise factor, e. g., lighting, scale and rotation pose are considered and tried to be eliminated. So the algorithm can give more general property.⑦A general face image recognition system is implemented. The experiment show the system can get better recognition performance under the noise surrounding of lighting, scale and rotation pose.

本文在上述研究的基础上，取得了如下主要研究成果：①构造了一个通用的人脸轮廓模型表示，解决了由于人脸图象尺度、旋转等因素而使得仅用单一轮廓表示无法正确提取人脸轮廓的问题，并给出了模型内、外能函数的定义，同时给出了模型的全局与局部匹配算法，实验表明，使用这种表示形式以及匹配算法，能够较好地提取人脸图象的轮廓，可实际用于人脸图象的分割；②深入分析了PCA方法的识别机制，得出不同成象条件下的人脸图象构成不同的人脸图象空间的结论，同时指出这也是造成PCA方法通用性较差的本质原因，并给出了不同人脸空间距离的一种度量方法，使用该度量方法能够直观地对人脸图象空间进行分析；③构造了各种尺度模板、旋转姿势模板以用于探测待识人脸图象的尺度、旋转角度，实验结果表明，探测精确度很高，从而有利于人脸图象特征提取，以及图象的有效表示；④构造了人脸图象的各局部特征模板，用于人脸图象局部特征的探测；同时提出了一种新的人脸图象局部特征探测法---逐步求精定位法，实验结果表明，使用这种方法能够精确地得到人脸图象各局部特征的位置；⑤提出了一种新的人脸图象表示法---双属性图表示法；利用属性图来表示人脸图象，并提取图节点对应图象位置的局部主成分特征系数以及Gabor变换系数作为图节点的属性，这种表示方法充分利用了人脸图象的局部特征的统计特性，并且使用Gabor变换来反映人脸图象的拓扑结构，从而使得双属性图表示法具有较强的通用性；⑥在双属性图表示的基础上，给出双属性图匹配函数及匹配算法，在函数及算法设计过程中，考虑并解决了光照、尺度、旋转姿势变化等因素对人脸图象识别的影响，使得匹配算法具有较强的通用性；⑦设计并实现了一个通用的人脸图象识别系统，实验结果表明，该系统在图象光照、尺度、旋转姿势情况下，得到了较好的识别效果。

Since she left, his daily heavy drinker to forget about her In an interview with two tasks, he was told to do it alone preparation 3 They will spend two years to repair buildings damaged by typhoons 4 In the cold of winter, they tend to let the fire burning all night long immortal 5 Yan'an Middle School students who need to get used Zaoshuizaoqi 6 Mr. Ji Xianlin left us a lot of translation masterpiece 7 Mayday's music for young people is a very attractive 8 We can not but appreciate his courageous and save lives in the performance of girls fell into the water (cannot help but a simple sentence) 9 The question now is not to find out who made a mistake but to correct the error not...

1自从她离开后，他每日借酒浇愁来忘却她(ever since 复合句) 2在接受任务的时候，他被告知要做好单打独斗的准备 3他们将用两年的时间来修缮被台风毁坏的建筑物 4在寒冷的的冬季，他们往往让火整晚长燃不灭 5延安中学的学生要习惯早睡早起 6季羡林先生为我们留下了许多翻译的巨作 7五月天的音乐对年轻人来说是极具魅力的（fascination 简单句） 8我们不能不赞赏他见义勇为，勇救落水女孩的表现（cannot help but 简单句） 9现在的问题不是要找出谁犯了错而是要改正错误（not。。。but。。

In the studying of image segmentation, six crucial technologies havebeen developed successfully. 1 In one dimension histogram of original DRimage of luggage, there remain maximum-value wave crest havingapproximately stationary position, and the first minimum to the left of thewave crest performs excellently to be used to get rid of background of DRimage. 2 Open operation, one type of math morphology, is the right idea toerase luggage disturbance in DR image and at the same time, can be retaininteresting region appropriately. 3 After open operation, there are only a few minimums on image histogram, one of which can be to segment image furtherand achieves satisfying result. 4 Method of histogram analyzing and that oferosion performs well in the re-segmentation of conglutinative region in DRimage. 5 Method of image distance switch can ensure Luggage CT sectionautomatically obtained to have rich suspicious region information. 6 Todecompose structure element of math morphology is a way to save a great dealrunning time for automatically discerning interesting regions algorithm,apparently improving implementation efficiency.

在对图像可疑区域分割研究中，主要开发成功以下几项关键技术：1发现原始箱包DR图像的一维直方图中，均具有位置相对稳定的最大值波峰，以波峰左边第一个极小值为分割阈值，去除DR图像背景，效果非常好。2运用数学形态学中的开运算能够非常有效地去除箱子的干扰，同时能够比较好地保留可疑区域。3发现开运算后的DR图像直方图只有若干个极小值点的特点，其中用最大值波峰左边的第二个极小值点进一步分割DR图像，能够更有效地提取箱包中的可疑区域。4运用直方图分析法和腐蚀法，对粘连区域实行再分割，效果较好。5运用距离变换法，能确保自动设定的箱包CT截面包含丰富的可疑区域信息。6运用形态学结构元素分解技术，大幅度减少可疑区域的自动判别算法运行时间，提高算法软件执行效率。

this paper makes the gas remote monitor network as background to do some research on the qos guarantee of the network.qos is a synthesis guide line which can be used to estimate the degree to satisfy with some server,which is a technology to solve the problem of delay and congestion in network.it must integrate multi-qos mechanism to get good qos guarantee in the practical application.three qos models in the ip net application and homologized affective factors are demonstrated.meanwhile,the field of qos protection strategy arrangement in shaanxi coal mine gas network has been picked up as the example.for this situation,the comparison to the different qos models is doing strictly.by combining the tcp congestion control arithmetic with ip congestion control arithmetic,the paper also emphatically describes the corresponded arithmetic model for that.stimulatingly,it is promoted the qos characteristic over-area effectively,which it is based on the original single congestion control.

摘 要：以陕西煤矿瓦斯监测远程联网为背景，研究其联网网络的qos保障策略实现。由于现有的各种qos实现机制无法单独为陕西煤矿瓦斯监测联网网络的qos提供保障，因此在实际应用中必须结合多种机制才能得到较好的qos保障效果。比较了传统ip网络的qos结构体系，通过分析intserv和diffserv两种模型的基本原理、工作方式，并指出其各自的优缺点和网络应用环境，设计了将rsvp协议与diffserv模型相结合来满足瓦斯监测数据传输实时性的要求；针对陕西煤矿瓦斯联网的特性，提出了将tcp拥塞控制算法与ip层拥塞控制算法相结合的算法模型，并且该模型的应用可以在原有单一拥塞控制的基础上有效地提升跨地区网络的qos特性。

this paper makes the gas remote monitor network as background to do some research on the qos guarantee of the network.qos is a synthesis guide line which can be used to estimate the degree to satisfy with some server,which is a technology to solve the problem of delay and congestion in network.it must integrate multi-qos mechanism to get good qos guarantee in the practical application.three qos models in the ip net application and homologized affective factors are demonstrated.meanwhile,the field of qos protection strategy arrangement in shaanxi coal mine gas network has been picked up as the example.for this situation,the comparison to the different qos models is doing strictly.by combining the tcp congestion control arithmetic with ip congestion control arithmetic,the paper also emphatically describes the corresponded arithmetic model for that.stimulatingly,it is promoted the qos characteristic over-area effectively,which it is based on the original single congestion control.

摘 要：以陕西煤矿瓦斯监测远程联网为背景，研究其联网网络的qos保障策略实现。由于现有的各种qos实现机制无法单独为陕西煤矿瓦斯监测联网网络的qos提供保障，因此在实际应用中必须结合多种机制才能得到较好的qos保障效果。比较了传统ip网络的qos结构体系，通过分析intserv和diffserv两种模型的基本原理、工作方式，并指出其各自的优缺点和网络应用环境，设计了将rsvp协议与diffserv模型相结合来满足瓦斯监测数据传输实时性的要求；针对陕西煤矿瓦斯联网的特性，提出了将tcp拥塞控制算法与ip层拥塞控制算法相结合的算法模型，并且该模型的应用可以在原有单一拥塞控制的基础上有效地提升跨地区网络的qos特性。关键词：服务质量；综合服务模型；区分服务模型；拥塞控制

Strategic trade policy can take different measures under different market structures, such as trade protection measures and industry measures. And these measures are used to transfer the rent of foreign oligopolies to native so as to improve native welfare or to get make external economics to back up native industries and to enforce the competition of native oligopolies.

战略性贸易政策可以采用不同的政策措施，如贸易保护措施和产业措施来达到转移外国垄断企业的利润来提高自身的国民福利以及获取外部经济、提高本国企业竞争力、支持本国产业发展的目的。

It should be noted: 1, without a doctors permission not to scribble pediatric medicine, such as improper use will increase eczema. 2, eczema parts washing is unavailable, in particular, should not use hot water and soap can be used to disinfect the vegetable oil or paraffin oil cloth. 3, to avoid the baby scratch, may be wearing gloves. 4, to avoid contact with chemical fiber, silk, wool and other clothing. 5, diet, try and get "allergy source", if the suspected milk allergy, milk can be cooked some more time; if it is on protein allergy can be a single fresh egg yolk; breast-feeding mothers do not吃蛋, shrimp, crab and other food; but have to eat with vegetable oil (sesame oil, soybean oil, peanut oil, sunflower oil) rich in food, due to unsaturated fatty acids reach the baby through the milk of the body to prevent capillary fragility and permeability-increasing, and this is is the infant occurred in the pathological basis of eczema. 6, if necessary, intravenous 10% calcium gluconate.

应注意：1、未经医生许可，勿给小儿乱涂药，如用之不当，会使湿疹加重。2、湿疹部位不可用水洗，特别不能用热水和肥皂，可以用消毒的植物油或石腊油擦拭。3、避免婴儿搔抓，可戴手套。4、避免接触化纤、丝、毛织品等衣物。5、饮食方面，尽量找出&过敏源&，如果怀疑牛奶过敏，可把牛奶多煮一些时间；如果是对蛋白过敏，可单食蛋黄；喂母乳的母亲暂时不要吃蛋、虾、蟹等食物；但要多吃些含植物油(麻油、豆油、花生油、葵花籽油)丰富的食物，因不饱和脂肪酸通过乳汁到达婴儿体内，可防止毛细血管脆性和通透性增加，而这正是婴儿发生湿疹的病理基础。6、必要时静脉注射10%葡萄糖酸钙。

Output film or sulphuric acid paper in design suites and confirm that the content is correct and complete, you can print it to the sulfuric acid paper or film, so that the laser used to make PS Edition, when you print to note the following:豍 be sure to select the mirror printing, if the print is there's no doubt that it can print, as a result of sulfuric acid paper or film thickness of plate burning precision, causing it to get the edge of the text is not clear;豎 when it is printed it is advisable to use the software's automatic imposition feature will be the contents of the three-card to a tailor to PS, this will not only save PS, reduce costs, and it is very convenient for the chromatography; when 豏 to master print, time, and generally use sulphuric acid paper or laser films the exposure time is about 3-4 minutes of using electric Division film print, time of 1-1.5 minutes, while the other developering concentration grapple.

输入胶片或硫酸纸在安排好版面并不否认不形式错误后，不离可以不兵其打印到硫酸纸或激光胶片上，以便用来制作PS版，在打印时给夺目以上几不面：豍一不退给拔取镜像打印，如果打印的是别字，晒版时不离会因硫酸纸或胶片的厚度感化晒版精度，变成晒不入的笔不朱边际不澄辉；豎打印时最坏能诳骗软件的被迫拆版功用不兵不一弛咭片的不形式不拆到一弛PS版上，这样不仅耗费PS版、贬矮本钱，而且套色时会格外便当；豏给把持好晒版工夫，凡是搁置硫酸纸或激光胶片晒版的工夫约为3-4不不合钟，搁置电不不合胶片的晒版工夫为1-1.5不不合钟，另边显影液的浓度也给把持好。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。