最優分佈 的英文怎麼說
中文拼音 [zuìyōufēnbù]
最優分佈
英文
optimum distribution-
Abstract : based on a numbers piled up for varies resources ( labor, materials, mechines ) in neuron plan, a composed distribution for various resources was obtained. then, using time difference and quantities of materials, the best selected work and time started as astrictive conditions, the best optimum distribution which satisfied variou resources in difference optimodel and astrictive conditions was got
文摘:將多種資源（人工、材料、機械）的數量同時在神經網路計劃技術上實行數字化疊加，從而獲得多資源疊加的合成分佈，再利用神經網路計劃技術中各個工作的不同時差和資源數量，按收斂條件選擇最佳開工工作和開工時間，滿足多種資源在優化模式中按收斂條件進行最優分佈The most obvious advantage is that because of their inability to scatter appreciably, nebular radio waves completely and genuinely delineate the distribution of nebular gas.
因為星雲對射電波的散射很小，所以最明顯的優點就是能夠全面而真實地勾畫出星雲氣體分佈的外貌。Based on the analysis of the fishing capture monitoring data, which obtained from 5 deep water drift net fishery resources investigation boats from april 1998 to march 2001, the results indicated that the psenopsis anomala which took accounted for 8. 68 % ~ 27. 16 % of the total catch, was one of the three preponderant species in the northern part of the east china sea and southern part of the yellow sea. ( branchiostegidac ranked first, followed by the psenopsis anomala or argyrosonus altetnate ). the yearly quantity distribution concentrated in summer and autumn, and reached the peak in latter summer to early autumn
摘要根據對5艘深水流網資源信息船1998年8月~ 2001年3月連續漁撈調查資料進行分析研究，結果表明：刺鯧是本海域深水流網漁業的三大優勢種之一（方頭魚占首位，刺鯧和白姑魚年間變動量相互交替） ，占年總漁獲量的8 . 68 % ~ 27 . 16 % ；周年數量分佈集中在夏、秋季，全年數量最高值出現在夏末初秋。The result is compared to the ideal velocity distribution, and the model is adjusted, calculations improved to attain hest results
通過與理想的速度分佈相比較，從而調整幾何模型和優化計算，獲得最佳速度分佈。A new planning method - analysis of factors of point line and area and control points optimization, which is based on the analysis of urban spatial structure, is tried to put forward. analyzing the important functional clusters in the spatial layout of the urban, the intracity medium - long distance vehicle traffic major directional desire line how the urban to link up with the highway network and the whole structure of expressway system, the skeleton of the expressway network can be obtained. using the degree of importance method analytic hierarchy process ( ahp ), one or several intersections can be selected
該法對城市空間結構布局中的重要節點、主要的中長距離機動車交通流徑期望線的分佈、大城市與區域干線公路網的銜接以及快速路系統線網的整體結構等進行分層次的分析研究，得出快速路系統線網構架，運用重要度法、層次分析法找出大城市重要功能組團中重要程度最高的一個或數個關鍵交叉口作為快速路系統線網規劃的控制點，考慮快速路線路走向的控制點對線路走向進行優化。Firstly, by numerical and theoretical analysis, the author compares some existent confidence intervals, for example, " exact " confidence interval, wald confidence interval and bayesian confidence interval, and finds some deficiencies points of the confidence intervals, whose modification version has been proposed. also, several better confidence intervals such as are also presented. secondly, for given confidence coefficient and interval width, the author constructs a class of asymptotical two - stage interval estimate procedures. at the same time, under varies restriction of confidence coefflcientent interval width, the optional sample size of the first stage has been computed by numerical computation. the numerical computation shows that the method considered in this dissertation have good properties and applied value
同時，由於poisson分佈的特性，我們知道不存在其參數區間長度小於0 . 5的置信區間，基於這些情況，我們主要展開了以下兩個方面的研究：一是利用數值計算分析與理論分析的方法對現有的若干置信區間如「精確」置信區間， wald置信區間， bayes置信區間等進行分析比較，發現了一些缺陷，針對這些缺陷，我們進行適當的修正，並得到幾種性質較好的置信區間如：修正大樣本區間jeffreys原則下置信區間二是針對已給定的置信系數與區間長度，我們提出了一種漸近的兩階段區間估計程序，並利用數值計算的方法，在各種置信系數與區間長度限定下，算出了最優的第一階段觀測次數（抽樣量） ，大量數據表明，本文考慮的方法性態良好，具有應用價值。In chapter3, we discuss the multiplicate progressive stresses accelerated life test. under the weibull distribution and an invers power law model we first present a necessary and sufficient condition for the existence and uniqueness of mle for the exponential distribution, then give estimators and confidence intervals of the parameters based on the blue. finally, we study them by using monte - carlo simulation
第三章首先指出了一組序進應力加速壽命試驗下weibull分佈分佈參數的mle不唯一，然後給出了p組序進應力加速壽命試驗下指數分佈的mle存在和唯一的一個充要條件，並用隨機模擬的方法研究比較了參數估計的優良性，最後給出了p組序進應力加速壽命試驗下weibull分佈中參數的點估計和區間估計，討論了有關問題，給出模擬實例。Based on the ostwald - de waele equation, the leakage characteristics of power - law transmitted by helical gear pump are researched, and the leakage model of power - law in the clearence is founded, and - the velocity distributing and the leakage capacity are worked out by the boundary condition. the power loss of leakage is got through the clearence leakage capacity, and the friction power loss is attained by the velocity distributing. the mathematic calculation model
利用冪律流體本構方程，首次對聚合物流體在斜齒齒輪泵中的漏流特性進行了研究，建立冪律流體在間隙中的泄漏模型，利用邊界條件求出速度分佈及泄漏量；由間隙泄漏量得到漏流損失功率，由速度分佈得到流體摩擦功率損失，並得到間隙最優解的數值計算數學模型，同時給出實例及數值計算結果。Niche breadth of four dominate populations at three age groups was studied by the methods of resource utilization ability and ratio. the result shows that : symplocos sectchuanensis is a typical gengeration species whi ch resource utilization ability is strong, and distribution is wide. meanwhile, go rdonia acuminata, castanopsis fargesis and pinus massoniana specialized at some d egree in resource utilizationm, their distribution is limited. especially, the ju venile of pinus massoniana specialized outstandingly. with the devlopment of pinu s massoniana, which is the pioneer population in mt. jinyun, the environment become s unfit to it ' s juvenile. it turns to needle and evergreen broad - leaves mixed fo r est. because the tolerance toward shading of gordonia acuminata is lower than tha t of castanopsis fargesis, gordonia acuminata will be substituted by castanopsis fargesis and other evergreen broad - leaves species are the edificators. the popul ation ' s ability of resource utilization is the inner factor of population distri bution and community succession. the distribution of light and the concentrate of nutrient ( such as n ) is the outer factors of community succession
對縉雲山森林植被的4個優勢種群3個年齡級生態位寬度進行了研究.結果表明，川灰木利用資源的能力最強、分佈廣，為典型的泛化種.大頭茶、栲樹、馬尾松對資源的利用在一定程度上特化，分佈上有一定的局限性.馬尾松的中齡組與幼齡組特化現象十分顯著.縉雲山森林植被的先鋒種馬尾松的發展，導致環境的改變不適于其幼齡個體的生長，群落演替到針闊葉混交林階段，最後發展為以栲樹等為建群種的常綠闊葉林.種群的資源利用能力，是種群分佈與群落演替的內在原因，光因子和營養元素（如n ）是群落演替的主要外部動力It is proposed that the fixed capacity investment and cargo discharge regression forecasting model and the optimal average information customer distribution model can be used to predict the cargo o - d distribution. the capacity limitation dynamic increment comprehensive network model can be applied to the prediction of the channel cargo transportation discharge and the turnover discharge in the main courses. the main courses network plan grade can be verified by the total cost method, and according to which the economic rationality of constructing different grade channels can be evaluated
本文開展了平原水網地區航道網規劃方法的研究，提出了採用固定資產投資完成額與貨運量回歸預測模型；平均信息量用戶最優分佈模型預測貨物o - d的分佈；容量限制動態增量綜合網路配流模型預測干線航道貨物運輸量和周轉量；採用總費用法論證干線航道網規劃等級，據此評定建設不同等級航道的經濟合理性。In this paper ， an optimal search strategy by dividing the whole surveillance area into regions is presented so that the optimal search can be adaptively implemented in phased array radar. firstly ， the inherent relationship among average discovering time ， radar resources consumption ， search frame period and target distribution density is studied. secondly ， parameters for the region search are optimized to achieve the optimal search performance inside regions. then ， the optimal search frame period for each region is derived to minimize the average discovering time of targets ， where the constraint of radar time resource and the importance of each region are taken into account. finally ， the adaptability of this search strategy is discussed. only if the optimal parameters for each region are utilized and the beams are scheduled according to the optimal frame period under the radar time constraint ， the optimal distribution and the optimal scanning sequence of beams can be implemented adaptively. thus ， optimal search is adaptively implemented in the whole surveillance area
本文提出一種分區搜索演算法，實現了相控陣雷達的自適應最優搜索.首先，研究了各區域平均發現一個目標消耗的雷達資源和目標被發現的平均時間同搜索幀周期以及目標強度的關系；然後，研究了在各區域採用兩步搜索演算法的最優參數設計，實現了局部區域的最優搜索；其次，在雷達時間資源有限和區域重要性加權的約束條件下，導出了使目標被發現的平均時間最小的區域最優幀周期；最後，討論了分區搜索演算法的自適應性.只要採用各區域的最優參數，按最優幀周期調度雷達波束，就可以自適應地實現使目標被發現的平均時間最短的波束的最優分佈和掃描順序，即自適應最優搜索The research for key techniques of turbo codes is processed. it includes, ? the design of optimal component codes and the performance of asymmetric turbo codes are analyzed ; ? a search algorithm for short random interleaver based on the distance spectrum and ids criteria is carried out and simplified ; ? random puncturing method to improve the weight distribution of turbo codes with some special code rates is analyzed and simulated. ? the effect of different schemes of trellis termination to the performance of turbo codes is analyzed ; ? a new low complexity decoder structure is provided ; 5
對turbo碼的部分關鍵問題進行分析和改進，主要包括： ?分析了最優分量碼的設計和非對稱turbo碼的性能； ?設計了基於距離譜和ids的短隨機交織器搜索演算法並進行了簡化； ?提出了採用隨機刪余方式改善特定高碼率turbo碼重量分佈特性的方法； ?分析了不同編碼器狀態歸零方案對turbo碼性能的影響； ?提出了一種降低實現復雜性的turbo迭代譯碼器結構。First the companding function that can realize optimum table spacing is derived, and a new nonlinear indexing method based on lut technique is putting forward. the advantage of this new indexing method is studied and the practical implementation is present. at last an improved adaptive scheme of the new method is considered
首先理論推導了實現表項最優分佈的壓縮函數，然後提出了一種非線性表項索引技術?查找表索引技術，分析了該技術的特點並給出了具體實現方式，最後還提出了自適應改進方案。A selection method of serm factorizations for linear transforms is presented. it is discovered that the near optimal results are almost everywhere and when the factorization error is small, the closer the permutation matrices, the closer the results. according this fact, a local search is proposed that based near optimal factorization method which can obtain the near optimal results. moreover, this method convergence very fast, can usually obtain useful results by very limited iterations. it is tested lossless image coding with the selection results and good results is obtained
通過大量的實驗，發現serm分解的近似最優結果是大量存在的，而且這些近似最優結果的分佈是分散的，當分解結果的誤差度量比較小時的時候，有當置換矩陣相近時，分解結果的誤差也相近的實驗事實。基於此觀察結果，給出了基於局部搜索的serm分解的近似最優分解方法，可以得到非常接近最優分解的結果。It learns from the basic thought of hierarchical clustering methods ( hcm ), which groups objects by comparing the sizes of distance or similar coefficients between objects, meanwhile, combines with the optimal split - plot designs ( ospd ) in ordered samples, and synthesizes the intuitive property of hcm and the character of simplicity and the ability in finding out the accurate solution of ospd. with history data, this paper assumes that data from the same group come from the same distribution, and so do the history data
本文汲取了系統聚類法中通過定義距離或相似系數並以其大小將對象進行分類的基本思想，將之與有序樣本情況下的最優分割法相結合，吸收了系統聚類法的直觀性和最優分割法的簡捷性及可以求出精確最優解的良好性質，在存在歷史數據的條件下，假設同類數據來自於同一分佈，歷史數據相應的來自該分佈。Finally, in order to resolve the problem that energies of nodes near the sink deplete too fast, the influence of redundant sensor nodes distribution is researched. layered network architecture based on regular hexagonal cells is introduced. taking cells as the minimum working units instead of sensor nodes, optimal distribution of redundant nodes is investigated so that network lifetime can be prolonged as much as possible
介紹了基於正六邊形網格的分層網路結構;以網格作為網路的最小工作單元，研究了如何分配無線傳感器網路的冗餘節點來延長網路壽命;通過對網路壽命的分析，獲得了由各層網格的冗餘節點倍數向量rn 、 1 - n層節點倍增值rt和分配剩餘冗餘節點的概率密度函數f （ k ）共同構成的網路冗餘節點最優分佈條件。Necessary conditions of optimal distributted control for age - dependent nonlinear population diffusion system
年齡相關的非線性種群擴散系統最優分佈控制的必要條件For the augmentation of heat conduction, the principle of temperature - gradient uniformity governing the optimal distribution of the thermal conductivity is presented and proved theoretically
對于導熱強化，提出並理論證明了溫度梯度全場均勻化是控制導熱系數空間最優分佈的基本原則。In addition, the redundant nodes in network are distributed with optimal distribution conditions, enabling the network life - time to ultimately meet the requirements of substation automation system applications
將網路中的冗餘節點按最優分佈條件進行分佈，使得網路壽命最終能夠滿足變電站自動化系統的要求。During the topology optimization of the load pan, the combination of the homogenization and artificial density method is adopted, and the concept of density subjection function and relative density is introduced, consequently, the traditional topology optimization issue is transformed to the optimum distribution of materials
在對負載盤進行拓撲優化設計的過程中，本文採用了均勻化法和變密度法相結合的方法，引入了密度隸屬函數和相對密度的概念，從而將傳統意義上的拓撲優化問題轉換為材料的最優分佈問題。分享友人