群的規模 的英文怎麼說
中文拼音 [qúndeguīmó]
群的規模
英文
flock size-
The 654 - foot ship rolled onto its side south of the aleutian islands, forcing a dramatic helicopter rescue of the crew last night
昨晚該長達654英尺的輪船迅速駛向阿留申群島南側,迫使(海岸巡邏隊)採取較大規模的直升機援救行動。The method of modified simplex was applied to optimize the models, and the fitting results show that liu - logistic model was more suitable than logistic model to the actual growth trend of form. taxus chinensis var. mairei population, and the highest growth rate of basal area was the tenth age class, namely the phase when breast diameter was 68 ~ 76 cm
以胸高斷面積代替種群生物量,分別採用logistic常規模型及劉金福提出的logistic改進模型對南方紅豆杉種群的增長動態進行研究,運用改進單純形法對模型進行優化,擬合結果表明改進模型比logistic常規模型更符合南方紅豆杉種群的增長趨勢,南方紅豆杉種群的最大增長速度出現在第10齡級,即胸徑為68 76cm時期。Thirdly, resorting to cooperation - competition model of biomathematics, this thesis proposes a new co - evolution model. simulation results are shown to verify its effect and practicabilitv. last, standard methods for optimizing neural netvvorks are easily trapped into local optimization, and unable to adjust the structure of neural networks, thus their application is limited to certain extent
本文主要驗證和設計適應性操作運算元和小生境方法保持群體多樣性的能力,實驗表明兩種方法都能較好地達到目的;利用生物合作競爭模型設計協同演化來動態地改變群體規模,實驗表明該模型是有效的;人工神經網路是得到越來越廣泛應用的學習系統,但是由於學習演算法存在一定的缺陷,如易於陷入局部極值,難以調整網路的結構等,使神經網路的應用受到一定的限制。Dull butcheries on a gigantic scale and mass effects overwhelm all detached sentiment.
大規模的無情屠殺和群眾意向壓倒了一切公平意見。According to the low speed of constringency and high complexity of training methods in large scale training, particle swarm algorithm is brought forward to solve the problem
針對在大規模訓練中演算法收斂速度慢、復雜程度高等問題,提出用粒子群演算法求解其中的二次規劃問題的思想。This belt is bounded on the north by a group of large plutonic masses.
該帶的北部被一群大規模的深成巖體所限。Industrial clusters have obviouse effect of economic scale
產業集群具有明顯的規模經濟性。Of the species, . characters of ecology, reproductive biology, genetic diversity, population genetic structure, endangering mechanisms, and sampling strategy have been studied in view of conservation biology. the results may be summarized as follows : by field investigation, we found that the localities recorded for four specimens of d. versipellis and d. pleiantha had disappeared, and most of the present populations are located in protected subforests. the distributional range of d. versipellis has also been reduced greatly, evidently, the number of present populations has decreased, the resources are reduced sharply, and the species are clearly endangered
從保育生物學的角度,對八角蓮種群生態學和生物學特性、遺傳多樣性水平和遺傳結構、瀕危機制及保育取樣策略進行了研究,結果如下:通過野外調查發現,原標本記載的一些八角蓮和六角蓮種群已難以找到,該類群目前多分佈於自然保護區外圍次生林地帶,分佈范圍明顯縮小,現存群體的規模也明顯減少,資源量貧乏,物種處于瀕危狀況。This model is simple and easy to be implemented. the refined genetic algorithm is also set up, in which some improvements are made on chromosome coding, fitness fuction, stopping rule, crossover and mutation pattern
對遺傳演算法的染色體編碼、群體規模的確定、收斂準則、交叉、變異等環節進行了改進,提高了演算法的全局尋優概率和收斂速度。The theory and the implementation of the genetic algorithms are discussed in detail. the question on how to choose the crossover probability, the mutation probability, the scale of population and the numbers of the generation is discussed. then, the mathematics model of the optimal design is established
詳細介紹了遺傳演算法的理論和實現技術,探討了交叉概率、變異概率、群體規模、進化代數等變量的選取問題,建立起了基於遺傳演算法的深基坑支護結構設計的優化模型,結合彈性地基梁有限元法,利用fortran語言編制了gafortran優化程序,程序中包括普通遺傳演算法和改進遺傳演算法。And through the analysis of group differences reflected, on the social network, by the work force in different groups with different professional role in the present rural area, this research gives the prophecy of the evolving tendency of the social supporting network of the work force in the rural area in china. the thesis is divided into four parts : the first part expatiates the focus of attention, purpose, significance, innovation, feasibility, research idea and research methodology of the paper. the second part, through the five aspects of the scale of the social supporting network, relation constitution, compactness degree, convergence and diversity, describes and analyses the general character of the social supporting network of the work force of the rural area, and roots out that the social supporting network of work force in rural area in china is in the process of slow and gradual transform
全文共分四大部分:第一部分,闡述本研究的出發點、目的、意義、創新性、可行性、研究思路以及研究方法;第二部分,從社會支持網的規模、關系構成、緊密程度、趨同性、異質性等五個方面,描述和分析了農村勞動人口社會支持網的一般特徵,發現當前我國農村勞動人口社會支持網,正處于較緩慢的漸進的變革過程中,傳統農民的社會支持網已經開始呈現出一定的多樣性和豐富性的特點;第三部分,通過控制職業角色分化因素,對不同職業角色群體勞動人口的社會支持網進行差異性分析,發現較之農業勞動者群體而言,工商業勞動者群體的社會支持網更為復雜與多樣,其社會效用也更大;第四部分,在概括本文研究結論的基礎上,預測農村勞動人口社會支持網的發展趨勢,明確現代社會網的創新方向。The company has paid great attention to management and administration since establishing, through making determined efforts to make the country prosperous of nearly 20 years, humane change of idea, deal in reform of development, from perfection medical treatment in production of management, from optimization innovation in product of personnel, make sure ring ring precise and penetrating, put in place step by step, with richness technical design strength and abundant clothing make experience, because the constant development and strict with quality of the products, in addition, the management theories of " sincerity, innovation ", get one regular customer group, gain the masses of trust of customer too, make scale of company expand product their find a good sale in in all parts of the world constantly even more, the annual order is on the rise
自創辦以來公司便十分注重經營管理,經過近二十年的勵精圖治,人文觀念的變更,經營發展的改革,從管理的完善到生產的調治、從人員的優化到產品的創新,都做到環環精到、步步到位,具有雄厚的技術設計實力和豐富的服裝製作經驗,由於產品的不斷開發和對質量的嚴格要求,再加上"誠信、創新"的經營理念,獲得了一批固定的客戶群、也贏得了廣大客戶的信賴,更使得公司的規模不斷擴大其產品遠銷世界各地,每年的訂單呈上升趨勢。Second, manufacturers are racing to expand production and gain the economies of scale and critical mass they need to survive
其次,各汽車廠商紛紛擴大產量,以獲得在市場生存下去所必須的規模效應和消費人群。Bp model can quite improve the accuracy of pricing result ; 2. need to confirm the number of the hidden layer of neuron rationally ; 3. should confirm population size rationally while optimizing ann ; 4
基本結論如下: ( 1 ) bp模型能夠提高定價結果的準確度;武漢理工大學碩士學位論文( 2 )建模需要合理確定隱含層神經元數目; ( 3 )優化網路應恰當確定初始群體規模; ( 4 )優化網路需要合理設計交叉運算元。Using the continuous test problems and the combinational test problems we compare the two algorithms : pspmea and spea2. elitism, size of the population and exchanging among sub - populations are the key issues in pspmea
通過連續測試問題和組合測試問題的實驗數據對比與分析,精英機制,群體規模以及子群個體遷移都是影響pspmea演算法的關鍵因素。In c & c + + ga program, using the parameter num equal to population number will make ga compulate more efficiently. 5. converting nonlinear equations solution to ga optimum problem, and then the problem is discused in ga model, fitness, coding, operator & parameter, convergence critericm multi solutions 6 aspects
首次在c與c + +的遺傳演算法程序中,提出了隨機數產生周期等於群體規模的參數取值方法,實例計算說明,演算法的計算效率能提高一倍左右。In the past, a mass exodus would leave the hive to be ransacked by honeybees from neighbouring colonies
過去,蜂群大規模出走後,周圍鄰近的蜂群會蜂擁而至,把廢棄的蜂窩翻個底朝天。Ga has the common shortcomings while applied in large - scale network, such asconsuming huge calculation time, easy to be trapped by local fninimize and not so goodability of searching local optimal solution. the pseudo - parallel ga technology and adaptivechanging population size are used to generate ndtial populaton, thus elevating the quality ofinitial population and furthermore improving optimal solution, voltage / reactive is of localcharacteristic in actual power system, and this fetch oul decomposing sub - area ga accordingto network natural management region
提出採用變群體規模的偽并行遺傳演算法獲得初始解群體,極大地改善了初始解群體的質量;根據無功/電壓問題的區域性特點,按照電網的自然管理分區,實現了遺傳演算法的分區分解計算;將常規的二次規劃模型的無功優化方法與遺傳演算法有機地結合,構成了獨具特色的混合遺傳演算法。By analyzing the specialty of enterprise existence in the enterprises clusters, the conception of the internal scale enterprises clusters ( isec ) was put forth, which helps us explain the cause of scale economy of the enterprises clusters including internal and external scale and scope economy and how to realize flexible manufacture and strategic synergy between them
通過對企業集群內企業生存特點的分析,提出了內生規模企業集群的概念,這有利於幫助我們解釋企業集群的規模經濟,包括內部規模經濟和外部規模經濟的形成的原因,以及集群內柔性製造和戰略協調是如何實現等內部機制。So that, one consideration on the optimal scales of industrial clusters comes out, that is, is there a best scale in which the total benefits, input - output ratio, is maximum or not
這樣就引發了對產業集群演化發展過程中合理規模的思考:是否存在一個最佳的規模(資產總量) ,使得集群整體的效益最大,即資金產出率(總產值/總資產)達到最大分享友人