Aiming at this drawback, an improved scheme is introduced,in which not only the advantages of the Harn scheme are kept,but also the h...

文章針對(duì)該方案的不足，提出一種改進(jìn)方案，新方案不但保留了 Harn數(shù)字簽名計(jì)算速度快及容易實(shí)現(xiàn)密鑰共享等優(yōu)點(diǎn)，而且能夠有效抵抗同態(tài)攻擊国产原创第一页，并且在隨機(jī)密鑰 k重復(fù)使用時(shí)能夠確保方案的安全性

Aiming at this drawback, an improved scheme is introduced,in which not only the advantages of the Harn scheme are kept,but also the homomorphism attack is resisted effectively. In addition, the new scheme can ensure the scheme's security when the same random key k is used.

文章針對(duì)該方案的不足，提出一種改進(jìn)方案AⅤ资源网影音先锋，新方案不但保留了Harn數(shù)字簽名計(jì)算速度快及容易實(shí)現(xiàn)密鑰共享等優(yōu)點(diǎn)都市激情国产在线观看网址，而且能夠有效抵抗同態(tài)攻擊，并且在隨機(jī)密鑰k重復(fù)使用時(shí)能夠確保方案的安全性。

Upon the problems mentioned above, this paper focuses on the following work:? Analyzes the advantages and disadvantages for the key researches both in and abroad;? Studies some existing international standards and protocols including SET and ASC X9;? Gives the designing rules for the secure scheme then proposes a general simple model for mobile payment;? A secure scheme called SeMo is designed according to the different security needs for lineate links and wireless ones;? Analyzes the security for the scheme still basing on the two distinct links, which improves the scheme fully fulfilling the security requirements such as: authentication, integrity, confidentiality and non-repudiation.

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Thirdly, by means of distinguishing its features, in accordance with thesetup rule, with the aboved feature of society, economy, environment, logistics industry andsystem and network, and so on, in order to achieve sustainable development as target, throughfour angles as society, economy, environment, logistics industry, select 8 index to establish it,moreover, use the AHP law obtain their weight, besides, by analyzing incompatible problembetween index and method, existed in traditional methods, in accordance with principle andfeature of extension synthesis assessment method, evaluate and optimate logistics centerplanning schemes and get an accurate result in the practical example.

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Secure communication scheme based on chaotic synchronization is an entirely new secure communication scheme. Pecora and Carroll propose secure communication scheme based on chaotic synchronization first in 1990. The scheme makes use of the good characteristic of chaotic signals, and has high security. Lots of papers improve on the scheme after it has been proposed.

基于混沌同步的保密通信方案是一種全新的保密通信方式日本爱爱网站。1990年欧美女一级片，Pecora-Carroll首先提出了基于混沌同步的保密通信方案，方案利用了混沌信號(hào)所具有的優(yōu)良特性，具有很高的安全性殴美真人操逼免费看，之后又有很多文獻(xiàn)對(duì)該方案進(jìn)行了改進(jìn)欧美老妇性性行为。

It is convenient to evaluate and optimize many kinds of design scheme of the inking system and could store and redact the design scheme. The software could provide accordance for the designers and the users. 4. The experiment on the PZ1650 sheet-fed press was performed for getting the indexes of the inking system.

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After that, the author, based on the wasteless mining theories and his research experience, put forward creatively a new method to design and appraise for the wasteless mining, in which the modern applicable visualization technique are applied.

在采礦方案優(yōu)選方面，發(fā)展應(yīng)用模糊數(shù)學(xué)與層次分析法的組合決策優(yōu)化方法對(duì)無廢開采方案優(yōu)選的指標(biāo)體系国产精品馆、權(quán)值的分析處理與系統(tǒng)進(jìn)行了綜合評(píng)判欧美性爱www，并建立了系統(tǒng)實(shí)用的方案優(yōu)化選擇數(shù)學(xué)模型，以獲得最佳内射合集在线视频、合理的無廢開采方案视频一视频二无码在线有限公司。

First, the paper analyzes 217 factory"s exterior environments completely and objectively by the models of PEST and Boter "s "five forces" and it points out the opportunities and the challenges for 217; Second, making use of the strategic groups theories, the BOSTON matrix analysis, the core ability theories and value chains theories, the paper analyzes the competition position of 217 factory in AC profession. It explicates the main rivals of 217 and the present conditions that 217 factory makes use of chances and averts the exterior threat; The third, according to the exterior environment and internal resources-ability of analysis, the paper makes use of the theories of SWOT to map out competition strategic projects. Immediately after, the paper evaluates and analyzes these competition strategic projects by means of strategy choosing theories.and then it chooses strategic projects of competition under current circumstance; The end, this paper puts forward to some ways in order to carry out these strategic projects of competition that has been chosen.

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To overcome the bad effect resulting from the nonlinearity time-variability and uncertainty on autopilot system performance during the motion process of aerodynamics missile, and to further improve the flight quality of missile, the autopilot system and used control method are researched. Firstly the integrant structure of system is discussed; then baaed un introducing the traditional PID method, controllers for missile attitude motion are designed respectively using fuzzy self-turning PID method and neural network self-adaptive PID method; at last a simulation experiment is finished. By comparing the simulation results that the designed controllers have good qualities is showed, and the feasibility and validity of applying fuzzy control and neural network into automatic control of aerodynamics missile is confirmed, and the base that other nonlinear control theory can be combined with the traditional control for missile to further improve the performance of missile control system is established.

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Chapter 9 is conclusion and future prospect. There are five innovative findings in the paper. Firstly, the evolvement of extensions and connotations of two reengineering styles is analyzed based on their high risk, and finding their trends of amalgamation. With this, the concept of corporation reengineering is then redefined combining core competence theory and ideas of process change management, and decompounding it into two parts: pre-reengineering and post-reengineering. Its inner relationships are analyzed and explained by economics theory. Secondly, establishing a analysis framework of reengineering risks, risk factors of foreign BPR are analyzed and concluded systematically for the first time. Reengineering risks are divided into three parts: plan, design and executive based on process and project management, then risk factors system is abstracted. Thirdly, 72 reengineering corporations in Jiangsu province are investigated on risk condition. Furthermore, risk factors in every part are analyzed and reduced experimentally by factor analysis method, and a risk factors system to suit Chinese corporation's reengineering is established. Fourthly, setting up a choice model of reengineering projects, the objective optimization model is presented to ascertain the weigh of each factor, a method of sequencing reengineering projects is presented so that risk of each reengineering project can be evaluated and compared effectively. Fifthly, an integration relationship model among IT, BPR and strategy is established aiming at productivity paradox derivative from IT and its dual effects on BPR, IT investment priorities in BPR is narrated deeply.

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