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ANOVA,regression method and likelihood ratio test can be applied in single-marker mapping.

单一标记分析法可以采用方差分析、回归分析或似然比检验的方法分析。

The data capture mainly gathers the data from the network. Protocol analysis can analyse every segment of the data packet according to protocol standard. Data recover can recover all the data of the application layer of the TCP connection. IP spoofing can construct all kinds of packets and realize the network attack. Real-time interruption can interrupt the TCP connection of Both sides of communication as the third party. Fire wall can realize network access control. Then the system can protect the network information safety from many aspects.

数据捕获主要完成从网络采集数据的功能;分析还原包括协议分析和数据还原两部分内容,协议分析可以对捕获到的数据包按照网络协议规范分别进行各协议字段分析,数据还原功能可以将每条TCP连接中传输的所有应用数据进行重新组合,还原出原来数据的内容;IP欺骗指构造各种功能的数据包,实现网络攻击;实时阻断指第三方实时阻断通信双方的TCP连接,禁止他们进行数据通信;防火墙主要实现网络访问控制,保护内部子网的功能。

The research work of this paper is divided into five parts: The first ,according to the work characteristics of ship's auxiliary boiler, this paper is to design applied project in the automatic control system of ship's auxiliary boiler; The second, according to the work request of the cargo winch of alternating three-speed change-pole speed-adjusting, this paper is to determine adopting the method of the PLC control; The third, this paper is to design PLC application in three -phase induction motor control, to give the ladder chart, program and input and output circuit diagram; The fourth, this paper is to research the method of the ship's combined starting screen automatic control with the PLC; The fifth, this paper is to inquire the possibility of apply the PLC in ship's engine room surveillance system; According to the comprehensive analysis of above actual example of ship's auxiliary machinery automatic system with the technique of PLC; not only can use the technique of PLC to replace traditional relay-contactor control technique in ship's auxiliary machinery automatic system, but also can get the conclusion of the former is more dependable and more clever than the latter, the maintenance is more convenient, thus develop a new path for ship automation.

本文研究的工作主要包括五个部分:第一,根据船舶辅锅炉的工作特点,设计PLC在船舶辅锅炉自动控制系统中的应用方案,主要有PLC选型及输入输出点的设计,画出系统控制梯形图并分析工作原理;第二,根据交流三速变极调速起货机的工作要求,确定采用PLC控制的方法,进行控制系统的硬件设计和软件设计,并分析工作原理:第三,设计了PLC在三相异步电动机控制中的应用,给出了控制梯形图、程序及输入、输出接线图;第四,研究了用PLC实现船舶组合起动屏自动控制的方法,进行了系统的电源设计和软件设计,给出系统工作流程图;第五,探讨了船舶机舱监视系统应用PLC的可行性,将继电器报警线路改为用PLC控制报警,给出系统硬件图和软件梯形图,并分析了PLC机的选型、抗干扰和应用PLC的经济效益和社会效益等问题。综合以上船舶辅助机械自动控制系统采用PLC技术的实例分析,可以得出船舶辅助机械自动控制系统不但可以使用PLC技术取代传统的继电器接触器控制技术,而且前者比后者更可靠、更小巧,维护保养更方便的结论,从而为船舶自动化开辟了一条新的路径。无忧毕业设计网 www.5ubs.cn

Model, while the real systems are packet systems.But this model is useful, because it is analyzable. The worst-case network

是包系统。但这个系统十分有用,因为它可以被简单的分析,并且通过分析可以得到

Meanwhile, result comes out that seven fossil samples are mostly evergreen Araucarioxylon, deciduous species prapably exists, but their fixed numbers of growing year are extraordinarily variant; Analysis of ariance indicates that, imposing ray cells, radial tracheid diameters-, the ratios of ray cells to radial tracheid diameters on distinguishing seven samples is doable as a whole, while not fitting for individuals.

经方差分析可以看出,利用射线直径、管胞直径和射线管胞比可以在总体上区分各标本,但对个别样本不适用;射线高度这一性状在各标本间差别很小,不能区分;结果认为:标本2和标本6的性状最相近,为相同的种类;标本1、4、7可能为同一属;对方差和CSDM曲线的综合分析认为,标本1、3、6的生长年限存在一定的区别,可能导致在方差分析上出现些许误差。

The tracing of the knowledge structure of the Ancient Judge can depart from three different points:firstly,the knowledge having been possessed before one became judge,which can be examined in the subjects and their contents of the imperial examinations;secondly,the professional knowledge necessary for an ancient judge to carry out his job,which can be known by studying the empanelment of Ancient Judge and the basic requirement of the subjects tested;thirdly,the knowledge tropism of Ancient Judge as a whole,which can be understood by analyzing how the state and judge clear up the judicial risks.

探寻刑官的知识结构,可以从三个角度出发:其一是刑官任官前的一般知识储备,这可以从科举考试的科目及内容出发;其二是刑官行使职权所需要的专业性知识,这可以从国家对各级刑官制度化的选任和考课的基本要求来分析;其三是刑官总体的知识取向,这可以从国家和刑官本人如何消解司法风险来分析。

Moreover, the actual allele frequency of most varieties deviates far from Hardy-Weinberg equilibrium. All PPB、na 、I、h、Gi and Fst have proved to be the references to elucidate that ISSR is a most powerful tool to analyze genetic diversity, compared with the RAPD marker and the allozyme marker is less strong ordinally. We could divided the 70 samples into A, B, C, D and E five groups using three methods according to genetic distance clustering. There is a bit displacement for few varieties in different clustering maps, but the most are similar to morphological analysis despite that there is still a great difference among cultivars in the same one group. The above results imply that the three methods have the different sensitivity and resolution in genetic distance analysis of close varieties. The Mantel test indicates that the results from the three kinds of markers have the significant correlation, which demonstrates that the number of the used three kinds of markers is enough to exactly detect the diversity of all 70 samples to ideal extent. And these methods can be used to evaluate the diversity of the whole group using the miscellaneous samples instead of the individual sample, of the Gerbera jamesonii are mainly from tissue culture plants. In conclusion, the above study results provide a reference for the application of three kinds of molecular markers to molecular marker-assisted breeding of flower. 2. The genetic diversity among the eight introduced cut-flower varieties of Ranunculus asiatica was analyzed by the ISSR markers. Based on the genetic clustering tree, all the colorful flower varieties are clustered into one group, and the white flower varieties into another group. Moreover, among the former group the yellow flower varieties are clustered into one sub-group, and the reddish flower varieties, such as rose color, pink, nacarat, are clusetered into another sub-group.

由三种分子标记的分析结果可以看出,等位基因平均值、观察杂合度、Fis值、Fit值皆较高,表明非洲菊等位基因较丰富,杂合基因偏多,且绝大部份品种的实际等位基因频率在品种内偏离了Hardy-Weinberg equilibrium;PP8、na、Ⅰ、h、Gi及Fst皆表明,ISSR检测遗传多样性的能力最强,其次是RAPD,等位酶最低;根据遗传距离进行聚类,三种方法都把70个品种分成A、B、C、D、E五个大组,每一组中除少数品种发生位移外,大部份品种分类结果相似,且与形态分析结果有相似性,但在每一组中,品种间的聚类差别较大,表明这三种方法在近距离品种间检测遗传变异时灵敏度及分辨力不同;Mantel检测表明,三种标记的分析结果有显著相关性,表明所用的三种分子方法的标记数量已经可以相对无偏地检测到70个品种间遗传变异;非洲菊为组培苗,三种标记的检测结果皆表明,混合样品可以作为个体样品的代表,对整个居群的遗传多样性进行评价;这些研究结果可为三种分子标记方法在花卉分子辅助育种中的进一步应用提供借鉴。

Therefore, it can be regarded as a great improvement of the investment decision-making theory and methods .This article makes a systematic research on real options theory and method and its application, including the following several main aspects:Firstly, it makes a detailed discussion about the common theoretical basis of financial options and real options, including no-arbitrage equilibrium principle, risk-neutral definition, complete market and dynamic tracking.Secondly, it analyze three basic characteristic of investment decision-making in modern market economic system: irreversibility, uncertainty and flexibility, and from the angle of their mutual quantitative and qualitative interactions, it makes a comparison between the traditional NPV methods and real options methods and makes a summary of the general analytical methods of real options.Thirdly, it discusses the all elements in the application of real options such as the ^leakages in value of real assets, basis risk, and private risk, and furthermore, it attempts to put forth a normalized strategy of its application and construct a basic framework of its application.Fourthly, it applies real options theory to strategetic investment of enterprises and the buy-out of company, putting forth a value model for strategetic investment program and making a concrete analysis of its application to buy-out. Furthermore, it advocates that a flexible investment decision-making system should be setup according to real options theory in our country.

本文对实物期权理论和方法及其应用进行了系统研究,主要内容包括如下几个方面:(1)详细讨论了金融期权和实物期权共同的理论基础,主要包括无套利均衡原理、风险中性定义、完全市场以及动态复制方法,对这些理论方法的探讨既是本文的出发点和基础,它们提供了研究实际应用实物期权的一个基准点,也是贯穿全文的线索和灵魂;(2)分析了现代市场经济体系中投资决策的三个基本特征即不可逆性、不确定性和时机选择,并从它们数量上和质量上相互作用的重要意义的角度,分析了传统的净现值法与实物期权方法的差异,指出了净现值法在不确定环境中存在的缺陷及实物期权处理投资灵活性的价值,并将净现值法纳入实物期权投资分析决策体系当中,总结了企业投资决策实物期权的一般分析方法;(3)探讨了实物期权应用中要考虑的各种要素,如实物资产的价值漏损、基差风险和非市场风险等,并进一步提出了实物期权应用的规范化策略和构建了一个实际应用实物期权方法的基本框架,尝试将期权的基本原理与企业在现实经济环境中投资决策的要素结合起来,从而可以在一定程度上超越期权的复杂的数学计算而汲取期权思想的精华,从而促进期权决策方法在实际投资决策中的应用;(4)将实物期权方法应用于企业战略投资,得出了战略投资项目的价值模型,指出可以将实物期权理论和方法应用于企业并购,分析了应用的具体方面,并提出应根据实物期权理论建立一套适合我国企业的灵活的投资决策系统。

Due to the complexity of the cell jitter, the NonSynchronous Tining Recovery methods are currently not mature With the emphasis being given to the Class A CBR traffic, this paper analyzes the performance of the queueing delay and cell jitter at the source node and intermediate nodes, and discusses the Source Timing Recovery at the destination node in ATM networks Firstly, this paper presents a description of the cell jitter of CBR traffic, and gives the definitions of two kinds of cell jitter regarding the Source Timing Recovery for CBR traffic Then, by using exact mathematical models and analysis methods, this paper analyzes the impact of the factors, such as the capacity of the queueing buffer, the randomness, the deterministic nature and the correlation in cell arrivals of the background traffic sources, on the queueing delay and cell jitter performance of the CBR traffic through Statistical Multiplexitng To obtain an insight into the power spectral distribution and look for better schemes for the depression and filtering of the cell jitter, within the analyses we succeed deriving the power spectrum of the cell jitter for CBR traffic Hence, not only the power spectral distribution of the cell jitter can in the frequency domain be qualitatively understood, but also can the rms (root-meansquare) value of the cell jitter be quantitatively obtained so as to more accurately measure the amplitude of the jitter In the end-to-end performance analysis of the queueing delay and cell jitter, we propose a kind of quasi-periodic cell stream model to characterize the jittered CBR traffic, and present an initial queueing analysis of the CBR traffic following such a model at a generic intermediate node Additionally, we briefly discuss the buildout/playout and Source Timing Recovery functions of the destination node Finally, regarding the Source Timing Recovery of CBR traffic, this paper systematically discusses several important principles of the cell jitter filtering and depression reported in the literature, introduces several implementation schemes of the Source Timing Recovery e.

由于信元抖动的复杂性,非同步定时恢复方法目前还很不成熟。本文针对A类CBR业务流在ATM网络源节点和中间节点的排队时延和信元抖动性能,以及在目的节点的源定时恢复问题作了较为全面的研究。首先,文中描述了CBR业务流的信元抖动,并具体地给出了两种与CBR业务源定时恢复有关的信元抖动的定义。然后,采用了精确的数学模型和分析方法,有针对性地分析了业务背景中信元到达的纯随机性、确定性和相关性以及排队缓存器容量等因素对CBR业务流经过统计复用后的排队时延和信元抖动性能的影响。为了了解信元抖动的功率频谱分布和寻求更好的抑制和滤除抖动的方法,在性能分析中,我们成功地完成了CBR业务流信元抖动的功率谱分析,使得不但可以从频域定性地认识信元抖动的能量分布特性,而且还可以定量地求出信元抖动的均方根值(rms:root-mean-square),以更为准确地衡量抖动的大小。在CBR业务流的多节点端-端排队时延和信元抖动性能分析中,我们提出了一种准周期性(quasi-periodic)信元流模型来描述感染了信元抖动的CBR业务流,并基于这一模型进行了CBR业务流中间节点的初步排队分析。

The simulation results of the cylinder-block model were given in the article, consistent with that of Middlemen"s. It was shown that the block part could improve the uniformity of the flow distribution. The analysis of the flow field of some materials with different power-law factor in the die designed by Mckelvey was close to that of Mckelvey"s. It was shown that the flow distribution was uniform in the die that can producesheets with 1200mm in width. During the analysis the flow channel was divided into several parts to get the details about the fluid flow in each area. A conclusion was drawn after analyzing the influence of the die pressure on the flow distribution, that the higher pressure is good for the output and bad for the uniformity of the distribution. Simulation of the die applying the cylindrical main runner showed the fact that when the cylinder replaced the cone the change of uniformity was trivial. The uniformity of the non-block flow channel was so poor that the block in the proper position of the die channel was necessary. The project of the die for the wider sheet was put forth, and the analysis of the fluid flow in the die was shown.

本文模拟了圆柱管缝隙流模型的三维流动场,得到了与Middlemen结论一致的流动均匀性,并通过模拟直观地展示了采用阻尼块可以改善挤出均匀性的现象;分析了多种幂率指数的流体在Mckelvey等人设计的流道模型中的流动分布,得到了与Mckelvey的分析结果接近的压力降和流量偏差;本文建立了1200mm幅宽机头流道的三维有限元模型,并逐个分析各个区域和多个截面的流动分布状况,由此揭示了1200mm幅宽L-型机头流道内的流北京化工大学硕士学位论文动分布基本均匀,并在分析了机头压力对于挤出流动分布的影响后得出结论:较高的机头压力可以获得较大的产量,但是不利于物料均匀分布;模拟了采用圆柱管主流道时机头流道内的流动分布,得出结论:主流道由圆锥管改为圆柱管时对流动均匀性影响不大,通过设置适当的阻尼仍然可以达到挤出平衡;模拟了两端进料式圆柱管无阻尼流道的流动均匀性后得到结论:两端进料式无阻尼结构的流动均匀性较差,宽机头中仍然有必要设置阻尼块;确定宽幅机头流道的基本方案,并设计了一种宽幅防水卷材挤出机头流道的结构,通过流动模拟表明该种结构的流动均匀性较好;考察了宽幅机头对于不同厚度片材的挤出适应性,得到结论:当生产不同厚度的片材时,阻尼块高度需要调整。

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I didn't watch TV last night, because it .

昨晚我没有看电视,因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来,在北京的很多小区里,电梯液晶电视被撤了下来。

I'm running my simile to an extreme.

我比喻得过头了。