緩速演化 的英文怎麼說
中文拼音 [huǎnsùyǎnhuà]
緩速演化
英文
bradytelic-
The hybrid algorithm raises the convergence rate of the conjugate gradient method and solves the problem for which the convergence rate of the steepest descent method get slower when the isopleth of goal function is oblong
這種混合優化演算法結合了共扼梯度法和最速下降法產生搜索方向，既提高了共扼梯度演算法的收斂速度，又解決了目標函數的等值線是扁長橢球時，最速下降法下降緩慢的問題，具有收斂速度快、收斂范圍大、適應面廣等特點。In the proposed flow control method for abr service in atm networks, by introduction of delay factors, the cell transmission rate for abr traffic with different rtd are adjusted differently when the surplus bandwidth varies, and the rate variation amplitude for the short rtd traffic will be enlargeed while one for the long rtd traffic will be lessened, compared with erica
改進的erica演算法加入時延因子，使在連接中具有不同時延的用戶在剩餘帶寬變化時，速率的調整具有不同反應，時延大的反應較遲鈍，時延小的反應較敏感。改進演算法使得小時延信源能更快的適應帶寬的變化，緩解了由於大時延信源速率調整的滯后而無法及時解除擁塞的現象。The results showed the trend of soil ifi changes was partial " u ", namely, during the course of artificial picea succession, soil ifi decreased sharply at the initial stage, after artificial picea reaches mature forest, soil ifi recovered slowly and reached soil ifi of natural coniferous forest finally
在人工雲杉林地中，土壤ifi表現出非正「 u 」型的變化，即雲杉幼林向成熟林演替時，土壤ifi迅速下降，大約在雲杉40齡出現自疏之後，土壤ifi回升，但恢復速度十分緩慢。Secondllv in the 1 d random traffic flow model. the relation function between the correlation and the creation. disappearance. brake probabilities of the vehicles is presented. according to the statistical mechanical approach to the spatial correlation functions. the theoretical results agree with that of the computer simulation. thirdh. based on the bml model. a main - road traffic flow model with two speeds on two dimensions is designed. this model simulate the traffic situation of one main road and several branches in the cit traffic lights placed on the crossing. vehicles breaking ~ vhile running and turning to other direction while jamming. we investigate the ~ ' e1ocitv and flo ~ ~ of the model when the initial densitvthe brake and turning probabilities. the green to signal rati3. thc number of the branches and the period of the signal are changed. then the reasons causing all the kinds of phenomena are analvzed. finallv. we simulate the bml model using the method of lattice boltzmann which ~ vas brought out by liu mu - renand obtain the velocity - density graph similar to the previous result. the upper critical densiw above which there are oniv jamming configurations. and the lo ~ ver critical density below which there are only moving configurations are the same as before. the boltzmann function which is on the lattices shows the moving and jaxmning transition obviouslv. thus it proves the possibilit of this method on the traffic research
接著，建立了和研究了二維二速的主幹道模型，該模型模擬了城市交通中一條主幹道，多條支道的交通情況，在幹道與支道的交叉路口設置紅綠燈，車輛在運行中可以有對突發事件發生反應的剎車，在發生堵塞時，路口的車輛可考慮通過轉向來緩解交通等各種實際情況的發生，給出了車輛演化的演化方程，並通過計算機模擬，研究模型在改變車輛的初始密度、剎車概率、轉向概率、支道數、紅綠燈信號的綠信比、紅綠燈信號周期等各種情況下支、主幹道車輛的速度、流量的變化，並分析在各種情況下交通狀況的成因，提出改善交通的有效措施。最後，在劉慕仁提出的用格子boltzmann方法研究一維決定論交通流的思路下，將此法推廣到對二維bml模型的模擬上，得到了與用以往方法的研究結果相類似的速度-密度圖線，且車輛從運動相到堵塞相轉變的上下臨界密度是一致的，同時分別給出車輛在處于暢通相和堵塞相時， boltzmann函數在格子上的分佈情況，進一步驗證了此法的可行性。The existing comparatively mature algorithms about these two problems is optimized and improved. fast implementation of operation on big integers is realized mainly through cut buffer, namely the strategy of getting time by space
並對現有比較成熟的演算法進行了優化改進，主要通過開辟緩沖區，以空間換取時間的策略，完成了大整數的高速運算。Through analysis, we conclude that washing action of wave and flow is main power of evolvement of region of interest landform, structure lead to the fact that water area around shallow structure in cheng dao sea field has an increase about 0. 3m / a through actual measurement, water depth increase rate around foundation is 0. 25m / a, slope gradient of side slope averagely has a decrease of 5 % o a year, however marine hydropower wash rate through compute is 0. 2m / a on underwater bottom, the wash rate on structure foundation is 0. 35m / a
分析認為，浪流的沖刷作用是研究區水深地形演化的主要動力，構築物的存在，使埕島海域淺水區人工構築物周邊水域實測年水深增加幅度約0 . 3m a ，地基附近水深增加速率0 . 25m a ，邊坡坡度平均每年以5減緩，而計算得出的海洋水動力沖蝕速率在水下底坡為0 . 2m a ，在構築物地基沖蝕速率達0 . 35m a 。The problem to improving the rate of convergence and the accuracy of tracking of ilc for deterministic linear systems is considered, in the meanwhile, the effects of the plant characteristics, various types of disturbances, errors in initial conditions and the " slowly " varying desired trajectories on the convergence and performance of ilc for uncertain linear and nonlinear systems are also investigated
針對確定的線性系統，主要研究能夠提高演算法的收斂速度和跟蹤精度的迭代學習控制技術；針對不確定的線性和非線性系統，主要考慮系統的特性、各種干擾、初始狀態偏移和不確定的未建模動態以及緩慢變化的期望軌跡對迭代學習控制過程收斂性和跟蹤性能的影響。Besides, it is not fit with the precise adjustment and is difficult to conform the place. a new adaptive genetic algorithm with bp algorithm to optimize weight is backed up. the algorithm which combines the merits of the global convergence of genetic algorithm with fast local researching of bp algorithm not only intensifies the gradual convergence and evolution ability but also advance the speed of convergence, precision of training and generalization
針對傳統遺傳演算法的搜索過程帶有一定的盲目性，其收斂特性不穩定且收斂速度緩慢，特別是在系統規模較大時，優化效果的明顯改善往往需要相當長的時間，而且不適合候選解的精調，難以確定解的確切位置，提出一種新型自適應性遺傳演算法，並在此基礎上，用bp演算法優化前向神經網路權值，綜合了兩種演算法的優點，即遺傳演算法的全局收斂性和bp演算法局部搜索的快速性，強化了遺傳演算法的漸進收斂和進化能力，全面改善了演算法的收斂性，提高了收斂速度及訓練精度，也擴展了泛化能力。分享友人