數據分佈中心 的英文怎麼說
中文拼音 [shǔjùfēnbùzhōngxīn]
數據分佈中心
英文
data distribution center-
The model reproduced the following facts of wa97 experimental data : the yield of strange particles increases with increasing mass and increasing centrality of the colliding system, and also with increasing strangeness content of hyperons in relativis - tic nucleus - nucleus collisions. the simulation of strangeness production using luc1ae model shows that strangeness production is related not only to the rescattering. but also to the collective interaction among strings in relativistic nucleus - nucleus collisions
Luciae模型能很好地描寫wa97發表的單奇異和多奇異重子的產額和橫質量分佈的實驗數據，能較好描寫wa97實驗所揭示的相對論性核-核碰撞中奇異粒子產額隨碰撞體系質量、中心度的增大而增加和奇異粒子增強隨奇異粒子所含奇異夸克數的增加而增強的實驗事實。According to the moving characteristics of tracklayer, when the vehicle is on ramp and the ground ' s vertical pressure is linear, the calculating formulas of relationship between the deviation of the instantaneous steering center, the position of vehicle ' s gravity, steering radius, moving velocity, moving acceleration, and vehicle ' s orientation, were obtained by the theory and method of vector analysis in mathematics and mechanics
摘要根據履帶式車輛的運動特點，運用數力學中矢量分析理論和方法，推導了接地比壓為線性分佈時履帶式車輛在斜坡上轉向時，瞬時轉向中心偏移量與車輛重心位置、轉向半徑、行進速度、加速度、車輛方位相互關系的計算公式。In this thesis, studies are focused on as follows : ( 1 ) based on analyzing the general transfer - matrix, the conception of the generalized double layer soil model is proposed, and the transfer - matrix ( r ) of half - infinite elastic mass is introduce - d to the analytic expressions of stress and settlement under the uniform circular, rectangular and strip vertical loads in multi - layered soil ; ( 2 ) according to the analytic expressions of the additional stress and settlement under unifo - rm circular in multi - layered soil, rectangular and strip vertical loads, the programs are develop - ed to resolve and debugged. the results show that the programs are correct ; ( 3 ) through calculating the coefficient of additional stress on the central axis of uniform circ - ular vertical loads, under the corner point of the uniform rectangular vertical loads, and on the central axis of uniform strip vertical loads, and the settlement on the center of uniform circular vertical loads and uniform rectangular loads in double - layered soil, the characters of stress and settlement are discussed ; ( 4 ) a case, as an example, is studied with different calculation methods, such as traditional theory, fem. the results obtained are compared
本文在已有研究成果的基礎上進一步開展了以下幾方面的研究： （ 1 ）在對層狀地基傳遞矩陣法中的總傳遞矩陣分析的基礎上，提出了廣義雙層地基模型的概念，並把半無限體的傳遞矩陣r引入到多層地基在圓形垂直均布荷載、矩形垂直均布荷載及條形垂直均布荷載作用下附加應力與沉降的解析式中； （ 2 ）根據多層地基在圓形荷載、矩形垂直均布荷載及條形垂直均布荷載作用下附加應力與沉降的解析式，編制了程序，調試通過並驗證了其正確性； （ 3 ）通過對雙層地基圓形垂直均布荷載中心軸線上的附加應力系數和荷載中心沉降，矩形垂直均布荷載角點下的附加應力系數和荷載角點沉降及條形垂直均布荷載中心軸線上的附加應力系數進行的計算，探討了雙層地基中的附加應力與沉降特性； （ 4 ）應用本文的層狀地基體系理論對一個工程實例進行了計算分析，並與傳統的計算方法的計算結果和有限單元方法的計算結果進行了對比分析，結果表明利用層狀地基理論計算更能反映地基中附加應力分佈的實際情況。In this thesis hydraulic experimental studies and theoretical analyses on the vortex - flow drop shaft were conduced and the following results were accomplished : ( 1 ) in the model test some hydraulic characteristics including the shape of air core in the center of the drop shaft, the radial distribution of water flow velocity and the distribution of pressure on the wall of the drop shaft were measured under the condition of high water head above 250m and large discharge above 1400m3 / s. ( 2 ) a kind of computational method for the spiral water flow in the air core region of drop shaft was discussed and applied and the results agree the experimental data well. ( 3 ) the total ratio of energy dissipation in the drop shaft can reach 90 % and the energy dissipation in every region was discussed quantitatively
本文通過試驗研究與理論分析對旋流式豎井泄洪洞應用於高水頭、大泄流量情況時存在的一些水力學問題進行了研究和探討，取得以下主要成果：一、結合小灣工程導流洞改建，對高水頭（ 252m ） 、大泄流量（ 1400m ~ 3 s ）條件下旋流式豎井中的水流運動特徵進行了比較全面的測量，包括空腔形態、徑向流速分佈及井壁壓強等；二、提出了豎井空腔段螺旋水流水力計算方法，其計算結果與實測值吻合良好；三、利用試驗與計算結果，對旋流式豎井的消能機理進行了探討，對豎井各部分的消能能力有了總體認識；四、對豎井下部消力井的合理井深進行了優化試驗研究，發現消力井合理深度為0 . 9d左右；五、通過試驗研究，歸納出豎井水流總摻氣量估算方法，為導流洞排氣方案的設計提供了參考依據；六、在高水頭、大流量條件下，豎井空腔段下部流速很高，盡管水流螺旋運動引起的離心力可以確保井壁壓強保持正壓，但空化數依然較低，因此豎井的空化空蝕始終是工程界關注的重大問題。An empirical analysis is made with the population data of the us cities to verify the theory and models developed in this paper, which will contribute to reconcile the apparent difference between the hierarchical step - like frequency distribution of city sizes suggested by central place theory and the smooth curve reflected by the work on the rank - size rule
多重zipf維數模型不僅可以有效地統一中心地的等級階梯與位序-規模法則反映的連續分佈，而且可以揭示城市體系演化的更多信息和隱含法則。以美國城市體系1998年的數據為實證對象，給出了城市規模分佈的多分維It is discovered that the combustion condition of the second stage pc is up to the outlet temperature of the first stage pc and the content of combustible gases in first stage flue also plays positive effect on the ignition of second stage pc. the effects of parameters of two coal - air mixture, wall temperature of first ignition chamber and annular filling air on imfit are studied experimentally in this thesis. in this thesis, the numerical simulations of ignition and combustion of pc in imfit are conducted
本文通過建立數學模型，對感應加熱煤粉多級無油點火進行數值模擬，研究了一級煤粉煤粉在點火室內的著火過程和二級點燃過程、煤粉粒徑分佈對煤粉多級無油點火的影響，研究了一級點火室壁面溫度、一級煤粉氣流和二級煤粉氣流的風粉參數在煤粉多級無油點火過程中的影響規律；根據二級點燃段的流場和溫度場分佈，研究了環形夾心風推遲二級煤粉著火的機理。The subject of this thesis is to study ironless moving coil linear permanent magnet synchronous motor and the major works in this thesis are summarized as follows : 1 ) two analytical formulas are derived by concentrated current method and distributed current method to determine the magnetic field due to pm, based on the current model of pm. besides, two method ( magnetic charge method and solution by laplace equation method ) are also introduced with comparing their advantages and disadvantages. then the effects of the motor parameters on the flux distribution are discussed
本文對空芯動圈式直線同步電動機進行了深入細致的研究，內容包括： （ 1 ）採用電流模型推導出兩種計算永磁磁極二維氣隙磁場的解析公式（集中電流法、分佈電流法） ，同時介紹了兩種永磁電機氣隙磁場計算方法（磁荷法，直接求解拉氏方程法） ，分析各種方法的優缺點，討論電機參數對氣隙磁密的影響； （ 2 ）介紹了單層同心繞組的布置方式，根據安培定律推導出空芯動圈式直線永磁同步電動機的靜推力計算公式，分析靜態力?位移特性； （ 3 ）建立空芯動圈式直線永磁同步電動機動態模擬模型，模擬不同驅動方式下電動機起動、穩態運行時電磁力、速度、位移的變化情況。In connection with the difference and distribution characteristic of the samples in sample space rs based on dga, a new self - adapted weight fuzzy omean clustering model of fault diagnosis of the power transformer based on the potential function is proposed. meanwhile, from the aspect of geometry characteristic of fc - divided in s dimension sample space, a method is proposed for the purpose of getting an effective adjacent radius, adaptive cluster number c and original cluster center of x sample set. for the diagnosis sample x, the property measure and diagnosis rule are proposed, which under the condition of potential density function that determine c number of optimal fuzzy cluster p1
根據以變壓器dga數據為特徵量的樣本空間各樣本差異特性以及樣本在空間r ~ s的分佈特性，首次提出了基於勢函數自適應加權的變壓器絕緣故障診斷的模糊c -均值聚類模型；同時，從s維樣本空間的f ~ c -劃分幾何特性出發，提出了一種求取樣本集的類勢有效鄰域半徑和自適應求取聚類數和聚類中心初值的方法；對一個待診斷樣本，設計了基於類勢密度函數意義下的屬性測度和診斷準則。There is no standard classification scheme, though equal - probable categorization is preferred wmo 2000. some centres determine the boundaries of categories by ranking method. others apply techniques involving fitting data to a statistical distribution iri 2003
具體的操作上，有一些氣候中心採用排列法ranking ，另外亦有氣候中心假設數據依正態伽瑪或其他統計分佈，進行曲線契合來分等級iri 2003 。The 29 f globular clusters in the galaxy are selected as samples in my paper ( the space distribution and motional orbits of the samples have not been researched in detail before. ). according to the basic parameters : azimuth coordinates, distances from the sun, radial velocities and proper motions of sample clusters, the initial positions and velocities of the samples are reduced using the galactic coordinates, and their orbits are integrated by numerical method for three different galactic gravitational potential models
本文選用銀河系中29個累積光譜型為f型的球狀星團作為樣本（這些樣本星團的空間分佈和運動特徵都沒有被詳細地討論過） ，根據它們的基本資料：方位坐標、日心距、視向速度，絕對自行等參數，歸算處理得出了各樣本星團的空間分佈和運動速度。Abstract : biological invasions are a continuous feature of a non - equilibrium world, ever more so as a result of accidental and deliberate introductions by mankind. while many of these introductions are apparently harmless, others have significant consequences for organisms native to the invaded range, and entire communities may be affected. here we provide a survey of common models of range expansion, and outline the consequences these models have for patterns in genetic diversity and population structure. we describe how patterns of genetic diversity at a range of markers can be used to infer invasion routes, and to reveal the roles of selection and drift in shaping population genetic patterns that accompany range expansion. we summarise a growing range of population genetic techniques that allow large changes in population size ( bottlenecks and population expansions ) to be inferred over a range of timescales. finally, we illustrate some of the approaches described using data for a suite of invasions by oak gallwasps ( hymenoptera, cynipidae, cynipini ) in europe. we show that over timescales ranging from 500 10000 years, allele frequency data for polymorphic allozymes reveal ( a ) a consistent loss of genetic diversity along invasion routes, confirming the role of glacial refugia as centres of genetic diversity over these timescales, and ( b ) that populations in the invaded range are more subdivided genetically than those in the native range of each species. this spatial variation in population structure may be the result of variation in the patchiness of resources exploited by gallwasps, particularly host oak plants
文摘:生物入侵是不均衡世界的一個永恆話題，尤其是當人類有意或無意地引入物種后.很多引入顯然是無害的，但另外一些則有著嚴重的後果，會給入侵地的生物以至於整個生物群落造成影響.本文總結了分佈區擴張的常見模式，概述了它們對遺傳多樣性和種群結構式樣所造成的影響.描述了如何根據以一批遺傳標記所得到的遺傳多樣性式樣來推斷入侵途徑，來揭示伴隨擴張選擇和漂變在形成種群遺傳樣式中的作用.本文對日益增多的群體遺傳學方法進行了總結，這些技術可以用來在不同的時間尺度上推斷種群規模所發生的巨大變化（瓶頸效應及種群擴張） .最後，我們以歐洲櫟癭蜂（膜翅目，癭蜂科，癭蜂族）一系列入侵的數據為例對一些方法進行了說明.從500 10000年的時間尺度上，多態的等位酶位點上等位基因頻率的數據表明: 1 ）遺傳多樣性沿入侵路線呈不斷下降的趨勢，支持了冰河期避難所作為遺傳多樣性中心的作用; 2 ）入侵地區的種群與該物種原產地的種群相比，遺傳上的分化更為強烈.這種種群結構在空間上的變異可能是被櫟癭蜂開發的資源尤其是櫟樹寄主在斑塊上出現變異的反映In the process of steel - making, killing oxygen by adding aluminum process is a controlled object whose parameters are distributed and non - linear, and its observed data are discrete. the key point of this process is model of killing oxygen by adding aluminum process
煉鋼生產中，定氧加鋁工藝的被控對象具有參數分佈、非線性、動態觀測數據離散等特徵，定氧加鋁模型的建立是該工藝的核心。In icf ecperiment, the x ray produced by laser plamsa mainly distributes in sub - kilo electron volt region, whose overall energy, energy - spectrum characteristic, projecting time and its distribution in space are basic dataes in theory and experiment
在icf實驗中，激光等離子體產生的x光主要分佈在亞仟電子伏特區（ 0 . 1 - 1 . 5kev ） ，它的總能量、能譜特徵、發射時間過程和空間分佈都是理論和實驗極為關心的基本數據。Detailed diagnoses is made on a heavy - hard rain in the northeast qinghai - xizang plateau using ncep data of 1 x 1 with 6h intervals, more complete and integrated conventional observational data and the data set of automatic meteorological stations in plateau and new generation doppler radar data and satellite images and etc. the following conclusions can be drawn : 1. the distribution of heavy - hard rain, which is characteristics of valley topography in northeast qinghai - xizang plateau is obviously effected by topography. the distribution of yearly mean precipitation and the frequencies of heavy - hard rain in this area are descending from east to west
本文首先利用ncep時間間隔為6小時的1 1的格點資料、更全面、更為完整的常規探測資料和高原地區布設的自動氣象站資料、新一代多卜勒天氣雷達資料、衛星雲圖資料等對高原東北部地區大到暴雨的天氣、氣候特徵及大尺度環流背景進行分析，形成對高原暴雨的整體認識，並為以後的數值模擬提供大尺度環流背景及依據，分析中發現： 1 、高原東北部地區大到暴雨的分佈明顯受到地形影響，年降水量和大到暴雨次數自東向西呈階梯性遞減趨勢，分別在高原東北部的外流河谷地區和四川北部地區存在大值中心。A new data compression technique, called the threshold discrete fourier transform ( tdft ) method, is proposed to efficiently compress the scattered field data from complex targets
提出了閾值dft （ tdft ）演算法用於實現基於雷達目標強散射中心分佈的rcs數據壓縮。The usual method is, to find a sub - missile disper firstsion center first from each group data of the sub - missile ' s falling point coordinate, then to estimate the parameters according to a few data of dispersion center using the classical statistic method
通常的方法由每次試驗的子彈落點數據獲得一個子彈散布中心，再由少數的幾個散布中心數據、運用經典的統計方法求散布中心的正態總體分佈參數，其不足之處在於小樣本條件下采偽的概率很高。With the application background of the development of pbc dalian branch " disposal information s ervice system ", the decision supporting subsystem of dalian international cooperating group information system and china life insurance company dalian branch " estimate and planning of market the decision supporting system ", paper applies itself to resolve the above conflict and problem, in order to enhance the self - adaptive of dw system, to implement integration optimization within dw and measure the users compatibility, and to get a self - adaptive dw system. during the process, it uses dw technology, dw quality, corba structure and agent technology. the content is below : ( 1 ) in order to decrease the development cost, to improve the multiplexing of components and to realize load balance and distributional calculation in larger range, paper studies and realizes the self - adaptive architecture of dw with the corba technology, agent technology and java programming language. as a result, the dw architecture get the ability of initiative, permanence and intelligence
鑒於此，本文以數據倉庫系統面臨的問題與矛盾為研究背景，以中國人民銀行大連資金清算中心清分信息服務系統、大連國際合作集團決策支持系統、中國人壽保險公司大連分公司營銷決策支持系統評估與規劃等三個項目為應用背景，以強化數據倉庫系統的自適應性、在數據倉庫系統中進行聚集優化和度量數據倉庫用戶適用度，得到一個自適應的數據倉庫系統為目的，利用數據倉庫技術、數據倉庫質量、 corba結構以及agent技術，重點研究了以下內容： （ 1 ）為達到降低軟體系統開發成本、提高組件重用性、在較大范圍內實現平衡負載與分佈運算的目的，賦予數據倉庫體系結構主動性、持久性、智能性的能力，本文利用corba技術、 agent技術與java編程語言，研究並實現了數據倉庫自適應體系結構。After the field survey, the technique and implementation group of igcsb chose dajianshan where is 18km away from lanzhou seismic station in the south - west as the array site among several backup sites, and enforced a site survey on august, 1999. eignt suits of instruments supported by the analysis and prediction center, csb were used for the field observation, and 18 sites were deployed on two concentric circles and a beeline respectively. during the 18 days, we achieved about 3gb waveform data
1999年8月，中國地震局地球物理研究所臺陣建設技術實施組經過實地考察，從幾個候選陣址中選中蘭州地震臺西南方向18km的大尖山作為ims蘭州臺陣陣址，在中國地震局分析預報中心的支持下，投入了8套地震儀器以同心圓分佈和直線分佈方式在蘭州大尖山陣址對18個測點進行了為期18天的野外觀測，取得了約3gb的地震數據。Based on wind tunnel test and theoretical analysis, the vibration mechanism, vibration shape, dynamic response and equivalent wind load factor of the long - span grid roof of taizhou stadium subjected to wind excitation are analyzed systematically in this dissertation, and some valuable results are obtained. in the matter of wind tunnel tests, the distribution rules of roof under various wind directions are obtained through the data got from the wind tunnel tests for rigid model of long - span grid roof of taizhou stadium
在風洞試驗方面，通過對臺州體育中心屋蓋剛性模型在模擬大氣邊界層風洞中進行的不同風向角下的風洞試驗所得數據的研究，獲得了結構在各種情況下的屋面風壓分佈規律，並且繪制了臺州體育中心屋蓋在各個風向角下的屋蓋平均風壓系數和脈動風壓系數分佈等值線圖。Subramanyam mallela, rahul kumar. a divisive information - theoretic feature clustering algorithm for text classification
然而，中心向量的分類能力常常受到數據分佈的影響。分享友人