convergence region 中文意思是什麼

convergence region 解釋
收斂區域
  • convergence : n. 1. 聚合，會聚，輻輳，匯合。2. 集合點；【數、物】收斂；【生物學】趨同（現象）。
  • region : n. 1. 地方，地域，地帶；地區；行政區，管轄區，區；左近，鄰近；（大氣、海水等的）層，界，境。2. 【解剖學；動物學】（身體的）局部，部位。3. （學問等的）范圍，領域。4. 〈罕用語〉天空。
  1. Figure 4 depicts character convergence in different species using an example from an arid region.

    圖4用乾旱地區的一個例子描繪了不同種的性狀趨向性。
  2. The recent history of korean peninsula is a history of convergence of sea power and land power, which is an inevitable result caused by its geographical politics. during the recent history, great powers around once attempted to divide the buffer region - - korean peninsula time and again. during the cold war, the political division of korean peninsula is actually a reality of aspirations

    韓半島的近代史是一部成為海洋勢力與大陸勢力之力量交匯處的歷史，這是其地緣政治意義所導致的必然的結果。在近代的歷史上，周邊列強曾多次試圖分割東亞的緩沖地帶- -韓半島。冷戰時期，韓半島政治上的分裂實際上就是這種慾望的實現。
  3. Some result of power series in convergence region

    關于冪級數在收斂域內的一些結果
  4. In this region of convergence we find the deepest earthquakes, great topographic relief, and intensive volcanic activity.

    在這種聚合地區，我們發現了最深的地震，巨大的地形起伏和強烈的火山活動。
  5. By applying the theory and method of geological anomaly, it is focused on the analysis of the characters of major geological anomalies and their effect of mineralization in daye - jiurui region. the analysis result shows that the basement fault anomalies control a few major large hidden batholiths and their associated orefields ; that the anomalies of cover structure confine most cu - au deposits and fe - cu deposits within their scope ; that the geochemical anomalies and lithofacies - paleogeographical anomalies are major geological factors leading to trataboundness of some cu - au deposits ; that the anomalies of rock operties provide the favorable chemical and physical conditions for the ore - forming process, including the seepage, circulation, convergence and deposit of ore - bearing hydrothermal solution ; that the anomalous ctive stage of mesozoic magmatite is almost consistent with the major mineralization epoch of the fe, cu deposits, and the structure of multi - levels, and the zoning in magmatic system determine the spatial distribution of the mineralization system. then, based on the above analysis, a comprehensive variate, geological combination entropy, is brought forward for reflecting the complex degree of the combination of geological ore - controlling factors. after circumscribing the anomalies of geological combination entropy, the relations between the anomalies and ore deposits are determined

    從地質異常的角度，重點分析了大冶九瑞地區主要地質異常的特徵及其對成礦的影響.由分析可知：基底斷裂異常控制了本區若干重要規模較大的隱伏巖基及伴生礦田，而蓋層構造異常控制銅金礦床和鐵銅礦床的空間位置；地層的地球化學異常和巖相古地理異常是造成一些銅金礦床層控性的主要地質因素；蓋層的巖性異常為含礦熱液的滲流、循環、聚集和礦質沉澱等一系列成礦作用提供了有利的物理和化學條件；中生代巖漿巖的異常活動期也是本區主要的鐵銅成礦期，巖漿巖系統的多層分枝和分帶性結構控制了本區成礦系統的三維空間分佈.在上述分析的基礎上，構置了地質組合熵作為反映控礦地質因素組合系統結構復雜程度的綜合變量，並圈定出組合熵異常，由此確定了綜合地質異常與礦床的關系
  6. We analyzed the effect of such factors as grids size, boundary shape of region, and relaxation factor on the convergence of this iterative calculation by calculating two - dimensional iterative calculation examples. we take its conclusions as the three - dimensional iterative calculation ' s references

    利用二維算例分析了單元大小、區域邊界形狀、鬆弛因子的大小等因素對迭代收斂性的影響；在三維迭代計算方法的研究中參考、印證了這些結論。
  7. Trust region methods has drawn our attention increasingly as one approximating method guarantees general convergence. its basic step is as follows : first, we set trust - region radius, and then we get a trial step produced by constraint quadratical model

    信賴域方法是近年來日益受到關注的一種新的保證演算法整體收斂性的逼近方法，信賴域方法的基本步驟是首先指定一個信賴域半徑，然後用帶約束的二次模型來確定搜索方向與步長大小。
  8. This paper presents a conjugate gradient method using restart strategy for solving trust region subproblems. and the convergence is proved. the numerical results show that this strategy is very effective

    摘要給出了用共軛梯度法解信賴域子問題的重新開始策略，並證明了方法的收斂性，數值結果表明該策略可以大大提高演算法的收斂速度。
  9. Small watersheds are dominant landscape units of the region as well as runoff production, convergence and sand production unit which reflecting soil and water loss rules. small watersheds are eco - economic compound systems, embodying structure and function of economic and social activities of human being during a certain period time

    小流域既是區域的優勢景觀單元；又是一個產流、匯流、產沙單元，反映水土流失規律；還是一個復合生態經濟系統單元，反映一定時期內人類經濟社會活動的結構與功能。
  10. Rapid convergence of population and increase in standards of living result in huge urban domestic water consumption in pearl river delta region

    摘要人口的急劇集聚以及生活水平的快速提高，導致珠江三角洲地區的城市生活用水量非常大。
  11. Convergence theory of economic growth becomes a common way of regional inequality analysis theory and research methods, but to the central region that is redefined the

    然而對重新界定范圍的中部地區的研究，卻鮮見這一理論與方法的應用。
  12. The mesoscale systems have closed relationship to the - 52 tbb region with convergence in the lower levels however divergence in the upper levels

    Mcc發生在較弱的斜壓環境里，一般暴雨雲團則發生在較強的斜壓環境里。
  13. Then nonmonotone trust region algorithm is given and global convergence is proved. thirdly, based on complementary conditions and ncp theory, the minimax problem is transformed into nonsmooth equation. we introduce an numerical algorithm relating with splitting function method

    基於互補條件和ncp函數理論，將minimax問題轉化為一非光滑非線性方程組，利用分裂函數的思想，構造了一種新的演算法，並給出數值試驗和收斂性證明。
  14. Lc1 unconstrained optimization problem was discussed in the second chapter, giving a new trust region method and proving its global convergence and superlinear convergence under some mild conditions

    給出了一個新的信賴域演算法，並在一定的條件下證明了演算法的全局收斂性和局部超線性收斂性。
  15. We come up with an iterative approach using the newton - raphson method that has good efficiency and accuracy and is free from singularity and non - convergence except in a small region near the center of the earth

    提出了一個基於迭代newton - raphson方法的坐標變換快速演算法。除了靠近地心的一個小區域之外，新演算法不存在奇異和不收斂的情況。
  16. But, pso convergence ' s speed become slow in latter iterative phase, and pso is easy to fall into local optimization. at present, some scholars improve base pso mostly using 3 methods : disperse algorithm, increase convergence speed, enhance particle ' kinds. in the paper, i put forward 2 methods aiming at local best resutl but not whole best result. i modify base pso using the last method. some scholars put forward times initializations, so i select best result after circulating some times to be a parameter of formula. first, put particle into some small region, and ensure every region having one paticle at least. second, every region ' s particle has probability transfer other regions. although increase running time, enhance particle ' kinds, decrese the probability of convergence far from whole best result. nerms ( network educational resource management system ) is one of the research projects in the science and technology development planning of jilin province. the aim of nerms is to organize and manage various twelve kinds of network educational resources effectively so that people can share and gain them easily and efficiently, so as to quicken the development of network education

    但粒子群演算法仍存在如下不足:首先在多峰的情況下，粒子群有可能錯過全局最優解，遠離最優解的空間，最終得到局部最優解;其次在演算法收斂的情況下，由於所有的粒子都向最優解的方向群游，所有的粒子趨向同一，失去了粒子間解的多樣性，使得後期的收斂速度明顯變慢，同時演算法收斂到一定精度時，演算法無法繼續優化，本文對原始粒子群演算法提出了二點改進方案: 1 .演算法迭代到一定代數后，把此時找到的全局最優解當作速度更新公式的另一參數（本文稱之為階段最優解）再進行迭代; 2 .每次迭代過程中除最優解以外的每個粒子都有一定概率「變異」到一個步長以外的區域，其中「變異」的粒子在每一維上都隨機生成一個步長。
  17. The reference signal and the disturbance signal are controlled, which can achieve optimal effect in the meantime, applying adaptive lms algorithm based on variable step and variable region to variable frequency speed regulation system, the initial convergence rate, tricking ability of time - varying system and stable precision are best in the meantime

    利用變論域變步長的lms自適應濾波演算法，使自適應逆控制的異步電機變頻調速系統及其逆系統辨識的初始收斂速度、時變系統跟蹤能力及穩態精度3個指標同時達到最優。
  18. Both line search and trust region are well - accepted methods in the nonlinear programming to assure global convergence

    線搜索技術和信賴域策略是解非線性優化問題的兩種基本逼近方法，這兩種技術都能用來保證演算法的整體收斂性。
  19. A set of calculation softwares was programmed by simulated annealing algorithm. these softwares can find the best solution without being given initial values but region of convergence, and have a lot of advantages such as fast convergence, good stability and high accuracy

    根據模擬退火演算法編制的一系列計算軟體能在大面積內快速搜索，無須給定初始值，只要給定收斂區間，就能對可疑的點進行逐次逼近，直至搜索到一組最佳的薄膜參數值。
  20. The general nonlinear programming problem and the basic assumptions under which our convergence results hold are introduced in chapter 2. in chapter 3, we give the definition of the mpf which our method is based on, the mpf method and the trust region algorithm. the convergence results for the mpf method, some aspects concerning the practical implementation and some concluded remarks of the method are discussed in chapter 4

    第一章為緒論部分，第二章介紹本文收斂性理論所需要的一般非線性規劃問題的最優性條件和基本的假設條件，第三章給出修改的罰函數的定義，修改的罰函數法，以及第步迭代所用的信賴域演算法，第四章討論修改的罰函數法的收斂理論，數值實驗和由修改的罰函數法得出的一些結論。
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