local density 中文意思是什麼
local density
解釋
局部密度-
Intermolecular interaction potentials of ne - ch4 complex from local density approximation
4分子間相互作用勢的局域密度近似計算 -
The module was divided into sub - channels, and the hydrodynamics in each channel was just the function of the local cell packing fraction. based on the theoretical probability density distribution functio
在裝填密度較小的時候，紊流傾向十分明顯；當裝填密度較大的時候，殼程的流動狀況與層流相對比較接近。 -
The aa interaction which we take is in good agreement with the experimental ground binding energy of t he. the a. a potentials reproducing the experimental value of ba ( a / fe ) are obtained by folding the density distribution of the a particle and ajv local potentials which give a very good fit to the a - proton scattering data
） ?勢是通過選取（ ? ） -質子散射的實驗值數據較好的（ ? ） -核子定域勢、以4he核的密度分佈作折疊積分得到； -勢符合低能-散射實驗及sbe的基態共振能量。 -
In such cases, any local bunching of particles causes a large unshielded electric field unless the density is extremely low.
在這種情況下，除非密度非常低，任何粒子的局部集中都會引起末被屏蔽的強電場。 -
According to gaseous " molecular kinetic, the mass diffusion rate is within finite value. so theoretical conclusion of mass flux ' s producing and the essential relation of flux vs. force could be drawn. with the assumption that local density states in near equilibrium and the distribution is gradual changed, the classical first pick ' s law was modified considering mass relaxation time
根據氣體分子運動論對質量傳播速度為有限值情況下的質量流的產生及流與力之間的本構關系作了理論推導，在假定局域濃度處于近平衡態，其分佈為漸進的情況下得到了考慮質量鬆弛作用的經典fick第一定律的修正式。 -
We also derived the relationship between the radial local density distribution and the observed line integral density distribution by fourier integral transform. on this basis, the density inversion calculation is realized through fft method and is independent of abel inversion
另外，本文還著重推導了線積分密度分佈和徑向體密度分佈之間的傅立葉積分變換關系，並利用快速傅立葉變換實現了完全拋開abel反演公式的密度反演計算。 -
Consequently, large tracts of our main city areas around the harbour are filled almost continuously with tightly - packed buildings abutting roads. hardly any room for amenity planting, except at the few urban parks and occasional local open spaces, has been left in the pervasive high - density districts
可是，這樣一來，沿海港之廣泛地區滿是星羅棋布的樓宇及擁擠的街道。除少數市區公園及零星的空地外，在繁囂的都市裡，幾乎沒有多餘空間以供綠化種植之用。 -
In the terms of interpolation, the image reconstructed from nearest interpolation or linear interpolation has good edge but serious noise ; reconstruction from 4 * 4cubic interpolation or three b - spline or three - order lagrange interpolations has better local character. 2 x 2cubic interpolations which has both better edge and local character is the ideal interpolation, the following is the basic principle during reconstruction : ( 1 ) the more width of interpolation, the more number of summation and the more order of interpolation polynomial, the higher of density resolution ; ( 2 ) the more of interpolation polynomial and width of interpolation, the more of reconstruction time simultaneously, aimed at eliminating the effects of noise contained in projection data, in this paper, author analysis cause and effects of common artifacts. importantly, discusses convolution back - projection reconstruction algorithm with a shift axis of rotation has been derived for correcting images that acquired with a divergence axis of rotation using the fan beam geometry with an angle - equaled detector
在ct圖像重建時，選擇有限帶寬窗有較好的空間解析度，三角形窗有較好的密度解析度，選擇餘弦窗則使得空間解析度與密度解析度的折衷；從窗函數的頻譜角度來講，可以用於圖像重建的一個良好的卷積窗函數應該具備以下條件： （ ? ）小的3db帶寬b ，即最小的主瓣寬度； （ ? ）最小的旁瓣最大峰值a ； （ ? ）最大的旁瓣峰值衰減速度d ；就內插函數而言，臨近點內插與線性內插重建圖像噪聲大，但有較好的邊緣與細節； 4 4三次內插、三次b -樣條與四次拉格朗日多項式內插圖像平滑，局部特性較好。 -
And because of lacking the local research findings in hong kong, dr. suzanne ho, the principal investigator from the faculty of community and family medicine, chinese university of hong kong and other investigators in alphabetical order : miss sophie chan, prof winnie chu, dr. joseph lau, prof. nelson tang, prof. jean woo and dr. winnie yeo, are therefore commenced their work in 2004 on a on - going research project called - adolescent and adult soy intake and breast risk in chinese pre - menopausal women this study aims to investigate the relationship between not only the lifestyle but also the soy intake in the premenopausal women aged from 35 - 45 years and their breast density
由於大部份相關研究也是來自歐美，其研究結果缺乏本土性也可能不適用於華裔婦女身上。有見及此，此研究統籌何陳雪鸚教授（香港中文大學社區及家庭醫學系）聯同其他研究學者包括（排名不分先後） ：劉德輝教授、胡令芳教授、朱昭穎教授、楊明明教授、鄧高生教授和陳秀雁小姐在2004年開始進行一項關于香港婦女生活模式與預防乳癌的關系研究，探討35 - 45歲、未停經的香港婦女，除了生活模式，還有大豆飲食習慣與乳房密度的聯系。 -
By using the improved gravity model and gray theory model, the essay makes forecast analysis on future passenger traffic volume of shjiazhuang - taiyuan passenger - dedicated line from three aspects, including passenger flow of local line, passenger flow originating from other railways and induced passenger flow, and using gdp and population density of surround cities along the passenger corridor, the passenger traffic volume on existing line of shijiazhuang - taiyuan passenger corridor and the weighted operation time between cities as impact factors respectively
摘要利用改進的重力模型和灰色理論模型，從石太客運專線的本線客流、跨線客流和誘增客流3個方面，分別以客運通道周邊城市的gdp和人口分布密度、石太客運通道既有線的旅客運輸量、城市間的加權運行時間為影響因子，對石太客運專線的旅客運輸量進行預測分析。 -
The paper puts forward the clustering algorithm includes : clustering based on grid and iterative, enhanced clustering algorithm base on density and k - medoids, enhanced k - means algorithm ( optimize chooseing consult _ points in iterative process ), enhanced clustering algorithm base on distance. they can overcome many limitations ( some traditional algorithms terminate in local optimization. many results of cluster are roundness, too many times in partition iterative process ), which are related to the static architecture of traditional model
在傳統聚類演算法的基礎上，結合我們科學數據挖掘的應用對象?分子動力學數據，提出了迭代網格聚類演算法， k -平均和基於密度結合的聚類演算法，迭代過程中優化選擇中心點的k -平均方法，以及改進型的基於距離的聚類演算法等模式識別方法，能夠解決傳統演算法帶來的諸多問題（比如一些傳統的聚類演算法常常收斂于局部最優，發現都模式都趨近於球形，劃分方法中迭代次數過多帶來的效率問題） 。 -
In chapter two we study the transport properties of a curved quantum wire, such as the mixture of transverse modes, suppress of conductance, local density, abrupt change of transmission phase and so on. these properties is compared to those of a perfect quantum wire
第二章分析了弧形量子線的模式混合，電導抑制，局域態密度，透射相位突變等性質，並將這些性質與理想直量子線進行了對比。 -
The distributions of the local density, thickness, temperature, tangential and normal stress and surface tension were acquired by the study of liquid - vapor interface. these simulated data agree well with corresponding experimental data and the md simulation results from other authors, consequently it is proved that the model and simulation method in the paper are correct
對汽液界面進行了分子動力學研究，獲得了汽液界面局域的密度、厚度、溫度、切向應力和法向應力以及表面張力的分佈，並把這些數據與相應的實驗數據和其他作者的模擬結果相比較，吻合較好，從而證明了本文所採用的模擬方法和模擬模型是正確的。 -
The fractional change in bold signal for a given change in blood flow can vary in different parts of the brain, depending on the local density of blood vessels and the physiological state of the particular tissues at rest
同樣的血流改變所導致的血氧濃度變化信號變化，在腦的不同部位會有不同的大小，端視局部的血管密度以及靜態下特定組織的生理狀態而定。 -
Calculation of hardness scale for elements on density functional theory with generalized local density approximation and modified slater transition - state
以密度泛函論與局域近似法及改進過渡態計算軟硬度 -
From an analytic treatment, the state is determined by the nanotube diameter rather than chirality. the corresponding image of local density of states in real space shows a highly localized state around the defect
然後逐點計算局域態密度發現，在實空間準束縛態是一個非常局域化的效應，離開缺陷即迅速衰減。 -
Calculation of local density of states in the framework of u methods
方法框架下局域態密度的計算 -
An adaptive space subdivision method based on clustering is proposed, which completes space subdivision through two steps : first the objects are classified through a new local - density based clustering algorithm, then the space is subdivided according to the clustering
該方法由兩個部分構成，首先，通過一個基於局部密度的聚類演算法對物體進行聚類；然後，根據聚類結果，通過簡化分割方法實現空間分割。 -
Experimentally, the plasma produced by cable plasma gun ( c - gun ) and dense plasma focus ( dpf ) was measured by the laser differential interferometer system. the clear interference patterns were acquired at different time. the contour maps of line integral density and curves of radial local density at different height above nozzle were presented
實驗上，對等離子體斷路開關中的電纜等離子體槍（ c - gun ）和等離子體焦點裝置（ dpf ）產生的等離子體進行了測量，獲得了對應不同時刻的清晰的干涉圖像，給出了線積分密度等值線圖和距噴口不同高度處的徑向密度分佈。 -
Firstly the phase is extracted from interferogram by filtering and displacing frequency spectrum. then the wavefront and the line integral density are recovered by using fft or polynomial fitting method. lastly the radial local density distribution is calculated from the fitting curve of line integral density by the abel inversion
首先對干涉圖進行頻譜濾波，用頻譜移頻法從干涉圖中提取相位，然後用快速傅立葉變換或多項式擬合實現波面重建，計算線積分密度，再利用abel積分變換從線積分密度的擬合曲線中反演徑向體密度分佈。
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