元組關系演算 的英文怎麼說

中文拼音 [yuánzǔguānxìyǎnsuàn]
元組關系演算 英文
tuple relational calculus
  • 組 : Ⅰ名詞1 （由不多的人員組成的單位） group 2 （姓氏） a surname Ⅱ動詞（組織） organize; form Ⅲ量詞（...
  • 關 : Ⅰ動詞1 （使開著的物體合攏） close; shut 2 （圈起來） shut in; lock up 3 （倒閉; 歇業） close down...
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 演 : 動詞1 （演變; 演化） develop; evolve 2 （發揮） deduce; elaborate 3 （依照程式練習或計算） drill;...
  • 算 : Ⅰ動詞1 （計算數目） calculate; reckon; compute; figure 2 （計算進去） include; count 3 （謀劃;計...
  • 演算 : perform mathematical calculations; calculation; calculus演算器 exerciser
  1. We first set up the hiberarchy of the nmm ’ s visualization and focus on the study of pem ’ s visual process. then the coupling equation of pem is deduced and a rapid algorithm for solutions of bordered tridiagonal linear equations is put forward. in the last of the thesis, elementary system of deformation geometry unified for manifold ’ s structure is studied primarily via the idea of unified modeling and some theoretic results for analytical visualization are given out under the system of frenet frame of arbitrary parameters

    文章結合nmm的基本原理和特點，研究了nmm可視化的有關理論和方法;文章首先建立了nmm可視化的層次結構，重點對面素單元法（ pem ）的可視化過程進行了細致研究，推導出了pem的耦合方程，然後給出加邊三對角方程組的一種快速求解演算法，最後還從統一建模的思想對統一于流形結構變形幾何的基本體系進行了初步研究，得到了任意參數形式下frenet標架體系的若干適用於解析可視化的理論結果。
  2. The difference between these two algorithms is that the former uses sub - domain as the basic unit of task to be allocated and the latter uses the node - super - row as the basic unit of task. ( 6 ) the original problem is transformed into transformed domain by using laplace transform method. by the parallelization of the bem in the transformed domain, the parallelization of the elasto - dynamic be analysis is implemented by introducing the time related fimdamental solution, the time dependency is released from the formation of time - domain be equations

    （ 6 ）通過拉氏積分變換法將彈性動力問題轉換至變換域，通過變換域上邊界元的分佈并行處理實現了彈性動力邊界元分析的并行化；引入與時間有關的基本解，解除了時域邊界元系統方程組形成階段的時間順序依賴性，通過矩陣向量運算的分佈并行處理實現方程組時間步進求解方法的并行化，這種方法是一種部分時間并行演算法。
  3. The sms representation scheme allows a given specification to be decomposed into an ordered sequence of sub - sms, and attempts to match each sub - sms with one or more stored basic mechanical units. thus, the possible solutions are generated. the data structures, the decomposing and the synthesis algorithm are presented according to the established mathematical models and the data base system

    同時，結合關系型數據庫系統對運動方案設計知識庫的組織管理（包括基本變換單元信息的存儲、提取操作及數據流間的復雜關系建立） ，提出了方案設計的綜合求解演算法，實現了在計算機上進行方案設計的可計算自動求解。
  4. If the equipment is in condition of acute wear, the variable group will be determined by using fuzzy clustering arithmetic according to relativities of all elements under different level, and the pattern of waiting for identifying will be constructed

    一旦發現設備有劇烈磨損，能夠運用模糊聚類分析演算法，分析了不同水平下的各元素親近關系，從而確定設備磨損部位的變量組，構造待識別模式。
  5. Abstract : six quasi - ternary liquid - liquid equilibria systems between benzene, toluene, p - xylene, n - heptane, methyl - cyclohexane and n - formylmorpholine ( nfm ) + water have been determined at normal pressure and 60 ; the conjugate phase compositions and the contribution curves of these quasi - ternary liquid - liquid equilibria systems were obtained ; the experimental data were correlated using uniquac and nrtl models ; the plait points of these systems were obtained by the constructive fitting for the conjugate phase and parameter predicting methods ; the selectivity and contribution coefficients of the solvent to the solutes were calculated

    文摘:用液液平衡釜測定了常壓， 60下加水n -甲酰嗎啉和苯、甲苯、對二甲苯、正庚烷、甲基環己烷組分間6個擬三元體系的液液平衡，得到了擬三元液液平衡體系的共軛相組成和分配曲線；實驗數據用uniquac和nrtl模型進行了關聯；用共軛相作圖擬合法和模型參數推演算法獲得了各體系的褶點數據；並求得了溶劑對溶質的選擇性和分配系數。
  6. Taking erectophile type continuous vegetation as a example, authors had done many monte carlo simulations, and established empirical analytic expressions of radiances with component temperature, soil emissivity and leaf area index. empirical analytic expressions were used to construct objective function and genetic algorithm was employed to synchronously retrieve 5 parameters, such as component temperature, soil emissivity and lai, from thermal infrared 2 channels and 2 angles data. many experiments of genetic algorithm inversion from simulated data were conducted, results show that it is very robust to retrieve component temperature using genetic algorithm ; genetic algorithm can cope with uncertainty inversion problem pretty well if full advantage of priori knowledge was taken. comparison between inversion results and ground - truth data has been done. this paper offers a new example to retrieve component temperature from multi - channel, multi - angle thermal infrared data based on the model of directionality of thermal radiance

    在熱輻射方向性規律的基礎上，以喜直型連續植被為例，進行了大量的monte carlo模擬，建立了輻射亮度和組分溫度植被葉面積指數及土壤比輻射率之間的經驗函數關系。採用遺傳演算法，從熱紅外2個波段2個角度數據中，同時反演混合像元組分溫度土壤比輻射率和葉面積指數等5個參數。通過對模擬的觀測數據進行大量的遺傳演算法反演試驗，結果表明，遺傳演算法反演組分溫度非常穩健，在寬松的先驗知識條件下，遺傳演算法可以解決不確定性反演問題。
  7. After analyzing the characteristic of the parallel processing system, some problems about design missile - carrying processing system are pointed out ; network in the parallel processing system has become bottleneck and affect the performance of system, so the processing efficiency is analyzed in a multiprocessor system based on cluster - bus and some rules in designing the network in the multiprocessor system are brought out ; genetic algorithm is used for scheduling in the multiprocessor system, and a scheduling algorithm is described to suit arbitrary number of tasks, unequal task processing time, arbitrary precedence relation among tasks and arbitrary number of parallel processor, so that the schedule length will be minimized ; finally, an atr algorithm is mapped to a ring multiprocessor system, and a block diagram using dsp device is constructed. in chapter 4, the study is performed on real - time system hardware realization of atr. tms320c80 is selected as the kernel processor in multiprocessor system

    為此，對一種由常用的dsp晶元組成的多處理器系統的處理器利用率進行了分析，提出了多處理器系統互連網路設計的基本原則；本章使用遺傳演算法作為實現多處理器調度的工具，提出了一種新的任務調度演算法，該演算法主要是為了解決在任務數任意、任務計算時間不相等、任務前趨關系任意、以及任務間存在通信和考慮任務存貯器要求的情況下，如何優化任務在各個處理器上的分配和執行順序，使得多處理器系統總的執行時間最小；最後對一個目標識別演算法進行了硬體實現優化分析，根據分析結果，將演算法映射到由dsp晶元組成的環形網路連接的處理器拓撲結構上，得到了多處理器系統的原理框圖。
  8. This method first decomposes the skeleton into its meaningful component ( such as branch and loop ) set, then vectorizes each components to simple structure elements ( such as straight line segments and circles ) and finally arrange them into an attributed relation graph

    該演算法首先將骨架分解為它的有意義分量（如分支和環）集，然後將各分量矢量化為簡單的結構基元（如直線段和圓） ，最後將它們組織到一個屬性關系圖之中。
  9. In the field of the organization and expression of learning content, the teaching pattern, instructional strategy as well as design are introduced in this thesis. hence, by combining " student - oriented " with " instructor - oriented ", the mixture - teaching pattern and the hierarchy analysis method to decompose the learning goal are determined in the modern < wp = 7 > distance education. in order to construct the concept mapping, a star algorithm is given

    為解決學習內容的組織和表示，本文剖析了教育學中的教學模式、教學組織策略和設計方法，確立了在現代遠程教育系統中採取以學生為中心結合以教師為中心的多元化教學模式，確定了層級分析法作為分解學習目標的方法，提出了構造概念之間的映射關系的星形圖演算法。
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