fourth-generation system 中文意思是什麼

fourth-generation system 解釋
第四代系統
  • fourth : n 每月的四日；【音樂】四度音程，四度和音，第四音； 〈pl 〉 【商業】四級品。 a fourth part 四分之...
  • generation : n. 1. 代〈約30年〉，世代，時代；同時代的人。2. 一代[一世]。3. 生殖，生育；發生，產生。4. 【數學】（面、體、線的）形成。5. 完善化階段，完善化方案，完善化的模型；發展階段。
  • system : n 1 體系，系統；分類法；組織；設備，裝置。2 方式；方法；作業方法。3 制度；主義。4 次序，規律。5 ...
  1. The third generation of scada, based on the technology of distributing computer net and relation data base, could realize the large - scale internet connection, which is currently applied in data collection, surveillance control and processing control in the fields of electric power system, water supply system, petroleum and chemical industry etc. the fourth generation of scada would adopt the internet technology, object oriented technology, neural network as well as java technology as its main development tendency, aiming at enlarging the integration of scada and other systems, which could finally meet the needs of business management and integrated security economic circulation

    現在的基於分散式計算機網路以及關系數據庫技術的能夠實現大范圍聯網的第三代scada系統被廣泛應用於電力系統、給水系統、石油、化工等領域的數據採集與監視控制以及過程式控制制等諸多領域。第四代scada系統的主要發展趨勢是採用internet技術、面向對象技術、神經網路技術以及java技術等技術，繼續擴大scada系統與其它系統的集成，綜合安全經濟運行以及商業化運營的需要。
  2. An erp system differs from the typical mrpii system in technical requirements such as graphical user interface, relational database, use of fourth - generation language, and computer - aided software engineering tools in development, client / server architecture, and open - system portability

    一個erp系統和典型的mrp系統的區別在技術上，例如，圖形用戶介面，關系數據庫，在開發中使用第4代語言和計算機輔助軟體工程工具，客戶機/服務器體系結構和開放系統的可移植性。
  3. The main part and key technique of the cpa system is study : the generation of the femtosecond laser pulse is study, the modulation and maintenance of the ti : s laser is learned ; the types of the measurement for ultrashort laser pulse is generalized and the interferometric autocorrelation is expatiated ; the varieties of the stretchers is sum up and aberration - free stretcher is calculated and optimized to improve the stretching ratio ; the pulse selection is analyzed and a single pulse can be selected successful from the pulse train at a repetition rate of 82mhz ; the kinds of the amplifier in cpa system is gathered up, the eight - pass pre - amplifier and a good many effects in it is investigated. finally, the second, third and fourth - order dispersions in cpa system is analyzed systemicly, and the according means for dispersion compensation is worked out

    對cpa系統的主要環節及關鍵技術進行了研究：掌握了鈦寶石激光器的調節和維護技術，較深入地研究了飛秒激光脈沖產生的機理，其中對群速色散、自相位調制、自鎖模等問題進行了詳盡的分析；總結了超短激光脈沖的測量技術，重點研究了干涉自相關測量法；在總結展寬器類型的基礎上，對無象差展寬器進行了理論計算、優化設計，提高了展寬倍數；深入論述了脈沖列的選單問題，熟練掌握了脈沖選單技術。
  4. The first chapter in this paper provides a survey of data mining technology, and explains basic concepts, function and the whole framework of data mining and difficulties in developing and some future directions in association rule generation ; the second chapter introduce the basic concepts, brings forward a classification of association rule ; the third chapter give a deep research on algorithms of every kind of association rule, include mining single - dimensional signal - level association rule and multidimensional multilevel association rule, it describes these algorithm, point out some method to optimize this algorithm and test its quality with experiments ; the fourth and fifth chapter introduce the designs about association rule mining system basing on relation database visual foxpro in detail : according to system frame of the association rule mining, actualize a new mining algorithms and analyses every function module of program, at last further analyses the left problems in designs

    本論文第一部分對數據挖掘技術進行了總體介紹，說明了基本概念、功能和系統總體框圖以及發展中的難點和研究方面；第二章對關聯規則基本概念的進行了介紹，提出了關聯規則的分類方法；第三章探討了挖掘各種關聯規則的演算法，從挖掘單維單層布爾關規則的經典的apriori開始，分析了挖掘單維、多層關聯規則的演算法，多維關聯規則的演算法到多維多值屬性關聯規則的演算法。文中提出演算法優化方法，並對其性能進行了實驗測試；第四部分、第五部分詳細介紹了基於關系型數據庫的關聯規則挖掘系統的設計構思，根據關聯規則挖掘系統結構框架，實現了基於visualfoxpro的關聯規則挖掘系統，其于採用了一個新型的基於關系數據庫的關聯規則挖掘演算法，提高了挖掘效率，並詳細分析了程序設計的各個功能模塊，最後就設計中遺留的問題進行了進一步的分析。
  5. Main content includes : first, improve the understanding of the necessity and urgency about the youth ' s ideological and political work ; second, set up a goal system of the youth ' s ideological and political work, gearing to actual circumstances ; third, study the youth ' s thought state scientifically to strengthen the predictability and perspective of the work ; fourth, explore and utilize the new carrier of the work energetically, especially to capture the position of internet voluntarily ; fifth, combine the era ' s requiring and the youth ' s reality closely, and promote the work pertinently ; sixth, strengthen organizational support of the work and combine the innovating of the communist youth league ' s constructing with the ameliorating of the youth ' s ideological and political work ; seventh, continue and deepen teenagers " mass activity of establishing spiritual civilization ; eighth, make great efforts to build a good atmosphere for the youth ' s ideological and political work, mobilizing the whole society, with a responsible attitude towards the young generation and the country ' s future, optimize the environment the youth growing up in

    第三，就如何做好新時期青年思想政治工作提出了對策。主要內容包括：一是要切實提高對青年思想政治工作必要性、緊迫性的認識；二是切合實際地建立青年思想政治工作的目標體系；三是科學地研究青年思想狀況，加強青年思想政治工作的預見性和前瞻性；四是大力發掘和利用青年思想政治工作的新載體，特別是要主動占領網際網路這個陣地；五是緊密結合時代要求和青年實際，有針對性地開展工作；六是著力加強青年思想政治工作的組織依託，將團建創新與改進青年思想政治工作結合起來；七是繼續深化青少年群眾性精神文明創建活動；八是努力營造青年思想政治工作的良好氛圍，全社會動員起來，以對青年一代、對國家未來負責的態度，優化青年成長的環境。
  6. Pe pipe is used for gas engineering so early overseas that urban gas pipeline network in many developed country is made up of pe pipes, which are developing in the trend of hypo - high pressure gas transmission system. these coutries are extending the use of pe100, the fourth generation of pe product. meanwhile, they have advanced and well - developed technology standard from manufacturing to application

    國外在聚乙烯燃氣管道應用上起步較早，許多發達國家的城市燃氣管網均採用聚乙烯管道，目前正在逐步向次高壓燃氣輸配系統延伸，大面積推廣使用pe100級第四代聚乙烯產品，並擁有一套從原料生產到工程施工的先進的完備的技術標準體系。
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