格點函數 的英文怎麼說

中文拼音 [gédiǎnhánshǔ]
格點函數 英文
lattice point function
  • 格 : 格象聲詞rattle; gurgle
  • 點 : Ⅰ名詞1 （液體的小滴） drop （of liquid） 2 （細小的痕跡） spot; dot; speck 3 （漢字的筆畫「、」）...
  • 函 : 名詞1. [書面語] （匣; 封套） case; envelope 2. （信件） letter 3. （姓氏） a surname
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 函數 : [數學] function函數計算機 function computer; 函數計算器 function calculator; 函數運算 functional operation
  1. Abstract : in this paper, the status quo factor characters of rural industry increase are analysed, and cobby - douglas functions are established. factors involved are further analysed. finally, suatainable development countermeasures are put forword

    文摘:首先分析了山東省農村工業增長的要素投入特點，用道格拉斯函數對山東省農村工業增長因素作了動態分析，提出了山東農村工業持續發展的對策。
  2. Then the structure unit of hexangular lattice is found according to the principle of invariable symmetry. renormalization transformation is processed when we regard the structure unit and the growth model as graphs before and after transformation respectively. after choosing the 11 thermodynamic function fugacity as parameter, we can write out the partition functions before and after transformation and the formula of renormalization transformation

    然後根據對稱性不變的原則，從整體晶格中選取結構單元，把結構單元和生長模型分別作為重整化變換前、后的圖形來進行重整化變換，選取熱力學函數易逸度為參量，寫出了重整化變換前後的配分函數和重整化變換關系式，求出了這一變換的不動點。
  3. Abstract : the effect of correction of self - consistent potential on electronic structure in simple cubic nanocrystal particles is calculated by means of the green ' s function method in the tight - binding approximation, taking only the nearest neighbor matrix elements into account. the numerical results show that the electronic energy spectrum is shifted, the chemical potential is not equal to the atomic energy level, the electronic density at each lattice point is changed, and the variation of electronic density at surface lattice point is the largest

    文摘:在緊束縛近似下，只計及最近鄰的矩陣元，採用格林函數計算了自洽勢修正對簡立方納米晶體顆粒的電子結構的影響，發現電子能譜發生了移動，化學勢不等於格點原子能級，各格點的電子密度也發生了變化，其中以表面格點的電子密度變化最大。
  4. The main content is to study the stability of some cobweb models in which supply or demand curves are given nonlinear form. researches on the stability are done and the existent conditions and stable regions about equilibrium price are obtained. chapter five, application of logistic equation in cobweb models

    第四章：對具體幾個蛛網模型的分析本章是本文研究的核心和重點之二，主要研究了對于供給函數或需求函數為特定非線性形式的幾個蛛網模型的動態分析與穩定性問題，分別對需求函數或供給函數為非線性函數時的蛛網模型，進行了動態分析和穩定性分析，從而得出了其均衡價格的存在條件及穩定區間。
  5. First, the paper introduces the basic knowledge of the image processing technique, emphasizes the image processing method that is used in the measur - ement system, such as edge detection operator, curve fitting algorithm, espe - cially hough change in detail, etc. second, the paper introduces the vc + + 6. 0 program language, analyses its peculiarity and advantage, explains the form of the image in the computer and dib visiting functions

    首先，介紹了圖像處理方法的基礎知識，特別重點講述了在本系統中將會應用到的一些圖像處理方法，如邊緣檢測運算元、曲線擬合演算法等等，尤其是對于哈夫變換的方法，進行了詳細闡述。其次，介紹了本系統所應用的編程語言vc + + 6 . 0 ，分析了其特點和優點，並說明了模擬圖像數字化后，在計算機里的存儲格式以及相應的設備無關位圖訪問函數。
  6. Besides, the gauss interpolation function and the domain of support which includes much more nodal information than finite element method does is used to make meshless method much more earlier solve the large deformation and distortion and describe the local characteristic ( such as stress locality et al. ) more facilely

    並由於在無網格法中採用了高次插值函數和包含有較多節點的支持域（在有限元法中的支持域只包含單元節點） ，從而使得無網格法能方便地處理變形畸變和應力應變局部化等問題。
  7. By using cobb - douglas production function model and solow ' s growth equation, this paper computes and analyses the effect of technological progress on shunde ' s economic growth since 1990s, summarizes the characters and defects of shunde ' s technical development and points out technological progress become the vital factor and high - tech industry largely promote its progress

    本文運用柯佈道格拉斯生產函數模型和索洛增長速度方程式，對順德90年代以來技術進步及其對經濟發展的貢獻進行實證分析，指出技術進步已成為順德經濟發展的主要動力，概括了順德技術進步的特點及存在問題，認為順德高新技術產業的快速發展是發揮技術進步作用的重要原因。
  8. The transmission amplitude expressed by green ? s functions is derived exactly for the case of one dimension, and the scattering amplitude for the three - dimension case is also given approximately by green ? s functions. with the analytical expressions of this scattering amplitude, we can illustrate the relation of the poles of the scattering amplitude and the bound states in a more generated way

    對於一維散射給出了透射振幅的格林函數表示，對於三維散射近似給出了散射振幅的格林函數表示.利用散射振幅的格林函數表示，更一般性地說明了一維和三維情況下散射振幅的極點與束縛態能級的關系
  9. Electronic transport in a quantum - dot superlattice, consisting of an array of negative potential, has been studied by making use of the recursive green ' s function method

    摘要用遞歸格林函數方法研究了一種周期排列而成的量子點超晶格結構中的電子輸運性質。
  10. In this paper, the waterway curve plane function is established with move fit method to calculate the depth value of grid points, and in part fields linear method is adopted because of the distributing scrambling of waterway measure points. as a result of the use of two methods, not only the calculating precision is high but also the calculating speed is very fast

    本文選用移動擬合法建立航道曲面函數，插值計算航道測量區網格點的深度值，並且根據航道測量點分佈的不規則性進行了優化，即在測量點稀少的地方運用了線形內插法代替移動擬合法來進行插值計算，兩種插值方法的合理結合，不僅保證了插值的精度，特別是提高了插值的計算速度。
  11. 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。
  12. The main contributions of this dissertation are listed as the followings : l ) deducing and proving the " three in one " theory of natural monopoly, that is, from the angles of economies of scale, economies of scope and economies of network, giving an explanation of natural monopoly ; 2 ) putting forward the concept of " strict superadditivity " and proving that total value function and total revenue function of network economy have strict superadditivity ; 3 ) summarizing the emerging characteristics in the market definition of natural monopoly, that is, in the monopoly industry, " market " tends to be more and more smaller than " industry " ; 4 ) expounding that the objective patterns of regulatory reforms of the railway industry in china are explicit regulation with partly characteristics of implicit regulation ; 5 ) proving the idea that the structural reforms of the railway industry in china should be hierarchical ; 6 ) demonstrating the theoretical bases for whether infrastructure management should be separated from transpo rt operation ; 7 ) expounding and proving that the interior of the railway industry in china should implement the differential property rights reform pattern

    本文的研究特點在於： （ 1 ）在規模經濟、范圍經濟的基礎上進一步推導並證明了網路經濟與自然壟斷的關系，即自然壟斷可以從規模經濟、范圍經濟、網路經濟三個角度來解釋論述； （ 2 ）明確提出了一個與鮑莫爾、潘澤與威利格等人提出的「成本劣加性」相類似的概念? ?價值優加性，並證明了網路經濟的總價值函數和總收益函數具有嚴格優加性； （ 3 ）概括了自然壟斷市場界定中所出現的新特徵，即在壟斷產業中， 「市場」正越來越小於「產業」 ； （ 4 ）進一步論證了中國鐵路產業規制創新的目標模式是兼有部分內生規制特點的外生規制； （ 5 ）在中國鐵路產業的結構改革中應體現分層次的思想； （ 6 ）明確論述了內容提要鐵路路網公司等自然壟斷環節是否分割的理論基礎; （ 7 ）提出並進一步證明了中國鐵路產業內部應實行差異化的產權改革模式。
  13. The crt now has float and double forms for all math functions

    現在， crt包含用於所有數學函數的浮點和雙精度格式。
  14. Three finite - difference methods, i. e., stagger grid, implicit and explicit algorithms, are analyzed in detail. multi - grid algorithm is firstly introduced in elastic wave simulation, to solve for the stability problem inherent in stagger grid and implicit algorithm, also for the efficiency problem inherent in explicit algorithm, and the precision, stability and efficiency for simulation of elastic wave arc increased by multi - grid method. phase - delay method is provided to effectively absorb boundary reflection and increase efficiency for wave motion simulation, based on phase delay and amplitude decaying features along wave propagation

    在水平分層介質接收函數的波形反演研究的基礎上，本文系統闡述了非均勻介質中彈性波傳播數值模擬常用的三種有限差分方法：顯式差分、隱式差分和交錯網格法，首次將多重網格演算法應用於彈性波方程的數值模擬問題，克服了交錯網格法和顯式差分法穩定性差，以及隱式差分法計算效率低的缺點，大大提高了彈性波數值模擬的精度、穩定性和計算效率。
  15. A meshless shapefunction was constructed by fixed reproducing kernel approximation, and solved the 2 - d elastic mechanics problem by means of combining collocation

    利用固定重構核近似建立無網格形函數，並結合配點法求解平面彈性力學問題。
  16. The loading effects of the atmosphere are the sum of the direct effect, which comes from its newtonian attraction to any point on the surface or within the interior of the earth, and the indirect effects, which is induced by the earth ' s deformation and additional gravitational potential arising from redistribution of the mass because it can be regarded as the surface loads. they are traditionally expressed as the convolution integration of the atmospheric green ' s function, which is virtually the sum of the elastic and gravitational green ' s functions, and the measured values of the barometric pressure on the earth ' s surface over the globe

    隨著現代大地測量技術和數據分析手段的日益提高，大氣對各類物理場地表觀測的負荷影響必須予以考慮，大氣的負荷效應為直接效應（大氣對地球表面及內部點產生直接吸引）和間接效應（大氣作為表面負荷作用於地球，導致地球的彈性形變和內部質量的重新分佈，產生附加位）之和，習慣上表示為大氣格林函數（彈性項和直接引力項格林函數之和）和地表氣壓觀測值的全球褶積積分
  17. Through green ’ s function method, we find that a virtual bound state is induced by a point defect

    格林函數方法計算態密度的結果表明，單個點缺陷在碳納米管中引起準束縛態。
  18. In this thesis, by making use of the nonequilibrium green ’ s function technique, we investigated the transport properties of several new kinds of coupled - quantum - dot systems theoretically and obtained several significant results

    本文採用非平衡格林函數方法，對幾種新型的耦合量子點結構的輸運性質進行了系統的理論研究，並得到了一些有意義的結果。
  19. The existence of multi - positive solutions are presented to a singular nonlinear second periodic order boundary value problem. and the proof uses the fixed point index in the cone theory

    摘要利用格林函數的正性和錐不動點指數，分析了一類奇異非線性二階周期邊值問題的多個正解的存在性。
  20. Secondly, the paper emphasizes particularly on introducing two different approaches to brightness temperature ( for short, tb ) of layered medium. one is based on rt theory ( called rt method ), and the other is on the basis of dgf ( called dgf method ). according to the methods, the relational expressions between tb of two - layer medium and the thickness of its first layer ( for short, thickness ) are achieved respectively

    接著，著重介紹分層媒質亮度溫度（即亮溫）的兩種不同解法：基於rt理論的亮溫求解法（ rt方法）和利用並矢格林函數的特點得到亮溫的方法（ dgf方法） ，並推導出不同溫度分佈情況下，雙層媒質的亮溫隨第一層厚度的變化關系；結果表明：在相同溫度分佈情況下，兩種方法所得亮溫隨厚度的變化趨勢相同，但rt方法所得亮溫與厚度間是? ?對應關系，而dgf方法則不是。
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