Firstly, we generalize and analyze the advantages and present research of elliptic curve cryptography ; secondly, we study the basic theory of the ecc ; thirdly, we illustrate the safety of the ecc and discuss the elliptic curve key agreement scheme, elliptic curve encryption scheme and elliptic curve digital signature algorithm ; fourthly, we study fast algorithms of the multiplication and inversion multiplication of the element of in the underlying finite field f2m whose characteristic is two represented by the two basis of optimal normal basis and polynomial basis. we make improvements to the fast algorithm of the polynomial basis multiplication by hankerson and base on the experiments, we describe the properties and compare the advantages of the multiplication and inversion multiplication of the elements in f2m field under optimal normal bases and polynomial basis. results concluding from the study car be used as references in the realization of the elliptic curve cryptosystem ; fifthly, we overview the current fast algorithm of point multiplication, improve the fix base point comb algorithm, advance the speed of the whole system and remark the advantages and disadvantages of the popular algorithms based upon the experimental datas ; sixthly we realize the algorithm library of elliptic curve cryptography based on the f2m. only change slightly in our algorithm library can we realize the ecdh, eces, ecdsa based onf2m of anysize ; seventhly, we realize the ecc on two secure elliptic curves, including ecdh, eces, ecdsa
本文首先介紹並分析了橢圓曲線密碼體制的優點及研究現狀；其次研究了橢圓曲線密碼體制的基本理論；第三，分析了橢圓曲線密碼的
安全性並介紹了密鑰共享，加密，數字簽名等橢圓曲線密碼體制；第四，深入研究了特徵為2的有限域f _ 2m中的元素在多項式基和最優正規基表示下的乘法運算和乘法逆運算的快速演算法，並對hankerson等人提出的多項式基下的乘法運算的快速演算法作了改進，而且在實驗的基礎上不僅分析研究了f _ 2m域中元素在多項式基和最優正規基表示下的乘法和乘法逆運算的性能，還對這兩種基表示下的f _ 2m域中元素運算效率的優劣作了
比較和研究，所得的結論可供在實現橢圓曲線密碼體制時參考；第五，研究了目前流行的計算橢圓曲線標量乘法的快速演算法，同時改進了固定基點梳形法，提高了整個系統的速度，並在實驗的基礎上分析研究了流行演算法的優劣；第六，實現了基於f _ 2m的橢圓曲線密碼體制的演算法
庫，在我們的演算法
庫中只需稍微改變便能實現基於任意尺寸的f _ 2m上的ecdh ， eces ， ecdsa等橢圓曲線密碼體制；第七，實現了兩條
安全橢圓曲線上的橢圓曲線密碼體制，包括ecdh ， eces ， ecdsa 。
To manage data storage, many database management system are now available, like oracle, ms sqlserver, db2, infomix, sybase and mysql etc. these systems are all based on the theory of relational data model, and can provide us with strong functions on data storage management
在數據的存儲方面，有oracle ， mssqlserver ， db2 ， informix ， sybase ， mysql等成熟的數據
庫服務器產品提供
比較完善的功能。這些建立在關系數據理論上的產品無論是在功能、效率還是
安全等方面可以說完全能夠滿足現有數據存儲的需要。
From the left : vocalist kerry walsh, vocalist anne marie ketchum, conductor peter boyer, conductor bill conti, the beach boys family friends, movie star debbie reynolds, supreme master ching hai, actor john moschitta, the irish band " gaelic storm ", and vocalist mel kubik
左起：歌者凱莉沃許歌者
安茱莉凱倩指揮家彼得鮑約指揮家
比爾康迪海灘男孩家族朋友合唱團女演員黛
比雷諾詩人清海無上師演員約翰莫奇塔愛爾蘭蓋爾風暴樂隊歌者梅兒
庫必克。
In addition, participants included debbie reynolds, john moschitta, jr., maria newman, gaelic storm, kerry walsh, mel kubik, anne marie ketchum, jerome smith, nicole campbell, steven cooper, dr. larry m. timm, the pasadena boys choir, and especially, poet supreme master ching hai, who has become popular through her highly creative poems, paintings, music, clothing designs and charitable activities
此外還有黛
比雷諾約翰莫奇塔瑪麗雅紐曼蓋爾風暴樂隊凱莉沃許梅兒
庫必克
安茉莉凱倩傑若美史密斯妮可坎培史蒂芬古柏萊利提姆帕沙第納男孩聖詠團。
On the night of the battle, excited, but not weary though prince andrey did not look robustly built, he could bear fatigue better than very strong men, he had ridden with a despatch from dohturov to krems to kutuzov. the same night he had been sent on with a special despatch to brnn
作戰的深夜，
安德烈公爵激動不
安，並不感到睏倦，雖然看起來他的身體虛弱，但是他
比那些最強壯的人更能經受住勞累，他騎上馬，隨身帶著多赫圖羅夫的情報前往克雷姆斯晉謁
庫圖佐夫。
Further more, it ' s short of necessary security and hard to reused and also hard to update. so it ' s the most important to design a stable and safe middleware for the system
這種構架模式在用戶數量較多時訪問數據
庫的效率
比較低，而且軟體的重用性、
安全性較低以及軟體的升級
比較困難。
Based on the study on the current instance of agricultural environmental quality and safety in chongqing city, we put forward that : make the best of the environmental resources, carry on the layout of agriculture production, and adjust the agricultural structure ; strengthen ecoenvironmental protection and pollution control in the outskirts of the city ; reasonably apply pesticides and fertilizers in order to avoid agriculture products being polluted by them ; strengthen the construction of monitoring system of agricultural environment and agriculture product quality and safety in the whole city, and develop early warning monitoring ; strengthen non - point pollution control in the three gorges reservoir area ; and conduct more researches on controlling of priority pollutants in agricultural environment
摘要對重慶市農業環境質量
安全現狀進行了研究分析，提出了充分利用環境資源
比較優勢，進行農業生產布局和農業結構調整；加強城郊區農業生態環境保護和污染的治理；合理施用農藥化肥，防止農產品農藥殘留和硝酸鹽污染；加強全市農業環境與農產品質量
安全監測體系建設，開展預警監測；加強三峽
庫區農業面源污染防治；進一步開展農業環境優先污染物的控制研究等防治對策。
On the base of the popular short - term hydrologic forecast models, xin ' anjiang model, the sacramento model and the tank model are used to simulate and analyze the rongjiang river basin and result are analyzed contrastively the second part : the economic running problems are studied in the water power station, and the newest results are used in the water power station in rongjiang river basin
第一部分，探索了入
庫徑流短期預報方法，在綜述了現行常用的短期水文預報模型的基礎上，分別用新
安江模型、薩克模型和水箱模型對融江流域實際資料進行模擬計算。對模擬結果進行了
比較分析。第二部分，水電站廠內經濟運行理論的實例應用研究，將相關最新研究成果應用於融江流域水電站。
Thirdly, because the depth of the seepage prevention wall of xia ban di dam project has the value of 85m which is the maximum depth in the dam projects in our country, the stress state of the seepage prevention wall is very complicated, the influence of nine modulus for nine kinds of seepage prevention wall material on the stress and displacement of the seepage prevention wall is studied and the rule of the change of stress and displacement with the change of characteristic parameters for seepage prevention wall under time of engineering completion and water impounding operation period is given in this paper
第三，鑒于大壩基礎混凝土防滲墻深度達85m ，厚度僅為1 . 0m ，防滲規模和工程難度為國內之最，墻體應力
比較復雜，本文研究了大壩施工填築竣工期、水
庫蓄水運行期防滲墻的應力和變形隨墻體參數的變化而變化的規律，為大壩
安全設計及防滲墻墻體材料的選擇提供了理論依據。
5 by using multi - window programming technology to combine vc + + with autocad, this thesis implemented comparison of plane, profile and across section, interactive design of profile, railway location by across section and setting location of bridge and tunnel. 6 this thesis expounded itself viewpoint on application model of profile optimization in scrlid, and has been used in system development. 7 by putting forward the summaries on the application model of professional design, this thesis established mathematics model of calculating terrain height of profile and across section, automatic setting location of the bridge and the tunnel
2 、用面向對象的數據封裝和繼承技術實現了項目管理和方案數據的
安全保護； 3 、選擇應用vc + + dao數據
庫應用技術，完成了方案
比選共用數據
庫的開發； 4 、用autocadobjectarx定製實體技術，實現了線路平面拖放式交互設計； 5 、用vc + +與autocad相結合的多窗口編程技術，實現了平面、縱斷面、橫斷面三種圖形的對
比顯示，實現了縱斷面交互設計、橫斷面定線和橋隧工程設置； 6 、就縱斷面優化在線路方案
比選工作中的應用模式提出了自己的觀點，並在系統開發中得到應用； 7 、總結專業設計應用模式，建立了內插縱橫斷面地面高程、自動設橋、自動設隧數學模型。
The fifth chapter investigates the dynamic relationship between geometry and architecture based on ellipse ' s geometric character, and analyzes ellipse architecture ' s characters in symbolism, dualism, diversity and unity these four facets. in the sixth chapter, taking ellipse architecture as examples, i try to explore the relationship between the more general geometry ' s purity and architecture ' s complexity, and build the foundation for future exploration of geometry ' s purity. in the seventh chapter, using typology contrast methodology, i analyze two architects with quite different design theories - tadao ando and koolhaas " adoption of ellipse, and taking position relationship as clue, combine ellipse and other geometric forms together to generalize the effect of geometry ' s purity to architecture ' s complexity in usual situations
第四章從歷史和現代兩個方面展開了大量對橢圓形式在建築中應用的個案和實例的研究與對
比，探討了橢圓形式在歷史上意義的變遷；第五章以橢圓的幾何特性為立足點，研究了橢圓幾何- -建築之間的動態關系，從標志性，二元對立，多樣和統一四個方面分析了橢圓建築的特點；第六章以橢圓建築為例，嘗試探討了更一般的幾何的純粹性與建築的復雜性的關系，對幾何純粹性意義的挖掘為進一步的研究提供基礎；第七章採用了類型對
比的研究方法，分析了
安藤忠雄和
庫哈斯兩位設計哲學截然不同的建築師對橢圓形式的使用；另外，以位置關系為線索，將橢圓和其他的幾何形式結合起來，總結了一般情況下幾何的純粹性對建築復雜性的作用。
With the refrigeration equipment industry as the background, xi " an qingan refrigeration equipment co. ltd as the research object, lean production management as the fundamental theory, this article is to analyze the current conditions and problems in the organizational pattern of assembly line, ways of purchasing materials, storage and production management information system in xi " an qingan refrigeration equipment co. ltd, to discuss the adaptability, feasibility and applied condition of lean production management, to compare the production, purchase, storage and production management information system before and after lean production management is adopted and the different effects, to pose efficient methods of purchase, production and storage which have been proved effective and feasible, to research method and experience attained during the application of lean production management, to offer proposition and assumption to apply lean production management, and to reach the conclusion that to enhance competitive ability the application of lean production management is the inevitable choice of the xi ' an qingan refrigeration equipment co. ltd
本文以空調製冷和壓縮機行業為研究背景，以「慶
安製冷」公司為研究對象，運用精細生產管理的基本理論，對「慶
安製冷」公司空調壓縮機多品種中小批量的流水線生產組織模式、采購模式、
庫存模式和生產管理信息系統中的管理現狀及存在問題進行了分析，探討了精細生產管理模式在「慶
安製冷」公司應用的適應性、可行性和應用條件，對
比分析了公司開展精細生產管理前後生產組織、采購、
庫存、生產管理信息系統取得的成效，提出了公司的采購過程模型，零部件最優
庫存控制模型，並經實踐驗證有效可行。文章研究分析了公司總裝車間開展精細生產管理的思路、方法和經驗，並對公司未來運用精細生產管理方式提出了改進建議和設想。文章得出的結論是：應用精細生產管理方式是「慶
安製冷」公司提升競爭力的必然選擇。
If it ' s a fairly common graphics card and you can ' t find the chipset or memory, you should be able to select a generic or older version of the card from the x installation database
如果它是一個非常共同的圖形卡，而且你不能找晶片組或者存儲器，你應該能夠選擇來自x
安裝數據
庫的卡的一個一般性或
比較舊版本。
Starting from the frozen food and refrigeration principles and using comparative analysis method, we get conclusions that in the blow - frozen device, the open - mode, cold - quantity reclaim, low - press, direct - cooling air, absorbing - heat air cycle have the most significant reductions in food freeze dry cost, food hygiene, devices delicate, organizating air stream, non - electrical heat, high efficiency and safe refrigeration etc. the cold - cumulating and dryness tin is the equipment which applys the store - release characteristic of cold - cumulating stuff, ensures the higher efficiency of open - mode cold - quantity reclaim low - press direct - cooling air, shoulders conveyance of the saturated and frozen air to frozen storeroom to reduce dry cost of food and dry the cycling air to ensure safe and reliable
從食品冷凍和製冷原理入手，用對
比分析方式得到了在吹風式凍結裝置中，開式回冷低壓直接冷卻吸熱循環空氣製冷機具有最大幅度降低食品凍結乾耗、確保食品冷凍
安全、系統簡單、凍結
庫小巧、氣流易於組織、無電機熱量、效率較高和製冷
安全等結論。蓄冷乾燥器是通過蓄冷材料的蓄?釋冷特性，來保證開式回冷低壓直接冷卻吸熱循環空氣製冷機具有較高的效率，同時蓄冷乾燥器還擔負著輸送飽和低溫空氣至凍結
庫以降低食品凍結乾耗和乾燥循環空氣以確保整機
安全可靠工作的主要設備。
Keeping mr hussein alive would also allow other trials detailing far greater evils than dujail to be completed ? such as the one, already begun, in which he stands accused of instigating the so - called anfal campaign against iraq ' s kurds, in which more than 100, 000 people may have been killed and millions uprooted
免去海珊先生死刑，還能讓其它
比杜賈爾村案更令人發指的案件繼續審訊下去? ?
比如說已經開審的
安法勒案，薩達姆被指控發動針對
庫爾德人的所謂
安法勒運動，造成了可能多達10萬人的喪生和數百萬人的流離失所。
On the basis of a full investigation and study and an integrated analysis of the geological setting and rock - mass mechanical environment of the bank slopes of the hydroelectric project area on the mainstream of the jinsha river and by combining the qualitative analysis with the quantitative evaluation, the authors calculated the instability of the sliding masses according to 1 / 8 and 1 / 11 of the total cubic capacity of the materials falling into the river and the surge wave heights at the falling sites as well as at the xiangjiaba and xiluodu dam sites and in adjacent townships according to the calculation method of the surge wave diagram given by the american society of civil engineers, made the risk evaluation of the bank slope instability with respect to the operation safety at the dam, safety of the cities and townships around the reservoir and safety of the reservoir operation, and put forward precautionary measures for bank slope instability
摘要筆者通過調查研究和綜合分析金沙江幹流水電工程區岸坡地質背景和巖體力學環境條件，定性分析與定量評價相結合，採用與三峽工程
庫區岸坡失穩危險性評價相類
比的方法，針對崩滑體失穩按總體積的1 / 8和1 / 11入江方量進行了計算和按美國土木工程學會涌浪圖解計演算法計算了入水點及在向家壩壩址、溪洛渡壩址和鄰近城鎮的涌浪高度，並圍繞大壩施工
安全、
庫區周邊城鎮
安全，水
庫運營
安全等方面對岸坡失穩的危險性進行了評價預測，提出了岸坡失穩的防治對策。
Abstract : this paper gives an account of the service behavior of dam safety monitoring system of tianshengqiao hydorpower station during construction period, impounding period and operation period, with comparing the deformation conditions of the dam before and after impounding and the behavior of the dam since its operation
文摘:通過大壩安全監測，天生橋一級水電站大壩安全監測系統在施工期、蓄水期及運行期的工作性態，比較水庫蓄水前後大壩各項監測內容的變形情況以及大壩運行到目前的工況。
