點在曲線上 的英文怎麼說
中文拼音 [diǎnzàiqūxiànshàng]
點在曲線上
英文
point on curve-
For this purpos, from the point of the log geology, aimed at the actuality of the current fractured reservoir log geology interpretation and evaluation, based on synthetical analysis of the current domestic and foreign fruit of fractal dimension investigation of reservoir fracture, using the method and technique of fractal dimension, through the further discussion of the fractal dimension characteristics of m index and n index in the log interpretation archie model in a sample way and through the theoretic reasoning to the fractal dimension dfa and m index of fractured reservoir interval ' s log curve, according to the geophysical signification of the fractal dimension dfa of fractured reservoir interval ' s log curve shape : the more complicated the change of the curve shape is, the larger the its dfa value is, then the more complicated space structure of fracture and pore, then the higher value of m index of space structure of fracture and pore, and so on, the text propounds an improved method, based on box dimension, of covering log curve with scale grid, and by programming computes the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, then further puts this technique into application investigation, and makes analysis of application effects in the reservoirs located in l area of qx oil field from three aspects : 1. the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, which are derived from computing, is used to identify reservoir type by crossplotting m index with the product df _ acrt of fractal dimension of acoustical wave log curve and restivity log curve and by experiential discriminance plate of reservoir type in l area of qx oil field
因此，對該區裂縫性儲集層的類型識別、孔滲特徵的測井地質解釋以及儲層裂縫的發育和分佈規律進行深入的研究便成為本文研究的出發點。為此，本文從測井地質的角度，針對當前裂縫性儲層測井地質解釋與評價的現狀，在綜合分析當前國內外儲層裂縫的分形分維研究成果的基礎上，利用分形分維方法和技術，通過對archie測井解釋模型中的m指數、 n指數的分形分維特性的深入淺出的論述以及裂縫性儲層段測井曲線分維d _ （ fa ）與m指數的理論推導，根據裂縫性儲層測井曲線形態分維值的地球物理意義? ?曲線變化越復雜，則其分維值d _ （ fa ）越大、裂縫孔隙空間結構越復雜、裂縫孔隙空間結構指數m值越高等特徵，提出了改進的基於盒維數的測井曲線網格覆蓋法，編程計算了裂縫性儲層段常規測井曲線（如聲波和電阻率曲線）上分形分維值及其m指數值，進而從以下三個方面對qx油田l區塊的裂縫油藏進行應用研究，效果十分理想： 1將計算得到的可變的m指數與聲波和電阻率分維之積df _ acrt進行交繪，採用儲層分維值分類技術統計分析這些參數變化的規律，並結合qx油田l區塊儲層類型經驗判別圖版，從而實現qx油田l區塊下白堊統的裂縫性儲層的類型識別。Sometimes he was handsome : sometimes as he looked sideways, downwards, and the light fell on him, he had the silent, enduring beauty of a carved ivory negro mask, with his rather full eyes, and the strong queerly - arched brows, the immobile, compressed mouth ; that momentary but revealed immobility, an immobility, a timelessness which the buddha aims at, and which negroes express sometimes without ever aiming at it ; something old, old, and acquiescent in the race
有時他是漂亮的，當他向地下或向旁邊注視時，光線照在他的上面，他象一個象牙雕刻的黑人似的，有著一種沉靜持久的美。他的眼睛有點突出，眉毛濃厚而奇異地糨曲著，嘴部緊縮而固定，這種暫時的但是顯露的鎮靜，是佛所有意追求而黑人有時超自然流露出來的，是一種很老的種族所默認的東西！The resistance of sample l # ( 44nm ) and sample 2 # ( 50nm ) rises rapidly from 25k and 45k respectively, and an inflexion appears at the temperature in the resistance - temperature curves. the same inflexion appears at 75k in the resistance - temperature curves
晶粒尺寸為44nm和50nm的1 #和2 #樣品的電阻率分別在25k和45k附近開始隨溫度的升高快速增大，在曲線上出現拐點。Firstly, we generalize and analyze the advantages and present research of elliptic curve cryptography ; secondly, we study the basic theory of the ecc ; thirdly, we illustrate the safety of the ecc and discuss the elliptic curve key agreement scheme, elliptic curve encryption scheme and elliptic curve digital signature algorithm ; fourthly, we study fast algorithms of the multiplication and inversion multiplication of the element of in the underlying finite field f2m whose characteristic is two represented by the two basis of optimal normal basis and polynomial basis. we make improvements to the fast algorithm of the polynomial basis multiplication by hankerson and base on the experiments, we describe the properties and compare the advantages of the multiplication and inversion multiplication of the elements in f2m field under optimal normal bases and polynomial basis. results concluding from the study car be used as references in the realization of the elliptic curve cryptosystem ; fifthly, we overview the current fast algorithm of point multiplication, improve the fix base point comb algorithm, advance the speed of the whole system and remark the advantages and disadvantages of the popular algorithms based upon the experimental datas ; sixthly we realize the algorithm library of elliptic curve cryptography based on the f2m. only change slightly in our algorithm library can we realize the ecdh, eces, ecdsa based onf2m of anysize ; seventhly, we realize the ecc on two secure elliptic curves, including ecdh, eces, ecdsa
本文首先介紹並分析了橢圓曲線密碼體制的優點及研究現狀；其次研究了橢圓曲線密碼體制的基本理論；第三，分析了橢圓曲線密碼的安全性並介紹了密鑰共享，加密，數字簽名等橢圓曲線密碼體制；第四，深入研究了特徵為2的有限域f _ 2m中的元素在多項式基和最優正規基表示下的乘法運算和乘法逆運算的快速演算法，並對hankerson等人提出的多項式基下的乘法運算的快速演算法作了改進，而且在實驗的基礎上不僅分析研究了f _ 2m域中元素在多項式基和最優正規基表示下的乘法和乘法逆運算的性能，還對這兩種基表示下的f _ 2m域中元素運算效率的優劣作了比較和研究，所得的結論可供在實現橢圓曲線密碼體制時參考；第五，研究了目前流行的計算橢圓曲線標量乘法的快速演算法，同時改進了固定基點梳形法，提高了整個系統的速度，並在實驗的基礎上分析研究了流行演算法的優劣；第六，實現了基於f _ 2m的橢圓曲線密碼體制的演算法庫，在我們的演算法庫中只需稍微改變便能實現基於任意尺寸的f _ 2m上的ecdh ， eces ， ecdsa等橢圓曲線密碼體制；第七，實現了兩條安全橢圓曲線上的橢圓曲線密碼體制，包括ecdh ， eces ， ecdsa 。After looking up a large amount of native and foreign information, the materials used in the experiment were as follows : ptfe base, graphite filler, molybdenum disulfide filler, copper powder filler, carbon fiber and so on. the experimental method is that the formula was designed according to uniform experimental method, the relationship between formula and frictional property was found with spline function and then the representative test points were chosen from fitting curve to make verification test for optimization. the preparative technique of solid lubricant is cold - press sintering method
經過查閱大量國內外文獻資料后確定原料為：聚四氟乙烯樹脂為基體，加入石墨、二硫化鉬、銅粉、碳纖維等填料；試驗方法為：根據均勻試驗方法設計配方，用樣條函數找出配方與摩擦性能的關系，然後在擬合曲線上選取具有代表性的試驗點進行驗證試驗，達到優化的目的；制備工藝：冷壓燒結法制備固體潤滑劑。If it lies above the curve, the air is said to be supersaturated
如該點在曲線以上，叫做超飽和。By successful solution of non - linear magnetic fields and revision of the program, we can reach following conclusions : in the computation of nonlinear magnetic fields, if iteration method is used, under - relaxation is necessary when amending the permeability distribution in soft magnetic materials ; and when < wp = 5 > calculating the equivalent current density in permanent magnets, under - relaxation is not a necessity ; when searching for permeability values by interpolation method on the demagnetization curve of soft magnetic materials, if a fixed saturation point is set, around this point an abrupt change of permeability values will be obtained ; this sudden change may cause a little problem in the smoothness of magnetic field distribution ; because the magnetic circuits of microwave tubes are too complicated, in the author ' s view, to describe the working state of a magnet system, the working points of magnets can not do it properly but average energy production of magnets will serve ; as to indicate the quality of a magnet system design for microwave tubes, the efficiency of magnetic energy utilization will be a very good criterion
由此得出結論，在非線性磁場計算中：採用迭代法的情況下，在各迭代循環之間進行磁導率修正時，一個欠鬆弛迭代過程是必需的；對永磁體中的等效電流修正時可以不作欠鬆弛迭代；在純鐵的磁化曲線上指定某一個固定的磁感應強度為磁飽和值，會使得插值求出的磁導率在該磁飽和值附近有一突變，這一突變對計算結果中磁場分佈變化的光滑性稍有影響。在微波管磁系統設計中，由於微波管磁路比較復雜，作者認為磁體的工作點並不能很好地反映磁體的工作狀態，而採用平均磁能積為衡量磁體工作狀態的標準更加符合微波管磁系統的實際情況；要表示磁系統設計好壞的程度，則用磁能利用的效率為標準更好。During the past decades, some researchers, such as : bezier, kj. versprile, deboor and cox, etc. had made great progress in the filed of constrained b - spline curve and surface fitting. in this article the method of constrained b - spline curve was introduced, which is used to figure out the control vertexes. using this interpolation method we can calculate every points of a uniform b - spline
並且分析了在各種端點情況下，在重節點的情況下，如何反算控制多邊形的頂點；如何在求出控制多邊形頂點之後，插值計算b樣條擬合曲線上的每一點；並通過結合雙尾船的型線，採用visualc + +和autocad2002為平臺，分別編制了相應的軟體，對提供的型值做出繪圖處理，取得了良好的效果。It offers the idea according to problem faced, considering the good character of the ends, the ajusted cubic b - spline curve is used to fit ship lines. it finds out the control vertexs according to a sequence of given points, and then, through particular formula, each point in the curve could be worked out. it smoothes lines with the method based on small - paramter
針對面臨的問題，提出了自己的思路，在數學計算方法上，由於三次準均勻b樣條曲線良好的端部性質，這里用它來擬合船舶型線，首先根據所給的初步型值求出其控制頂點，然後根據相關公式進行插值便能得到曲線上的所有插值點。In 3d space, points on the infinite plane compose the absolute conic, and it contains the interior parameter information of camera. we use photography geometry character of circular point on the absolute conic to calculate camera interior parameter, exterior parameter can be obtained. we can obtain more accurate
在三維攝影空間中，無窮遠平面上的點構成了絕對二次曲線，由於二次曲線的像包含了攝像機的內部參數信息，我們利用了圓環點的像在二次曲線上的攝影幾何特性，從而確定攝像機的內部參數，進而求取攝像機運動的外部參數。With regard to distinguishing containing of the water and gas, the cretaceous is the difficult point on logging interpretation all the time in the majing of western of sichuan. it is mainly the diversity of the containing of gas and water is very difficult to distinguish. gas and water react very closely in the log
對于含水含氣性識別，川西馬井地區下白堊統含氣性識別一直是測井解釋的難點，主要在於儲層含氣性差異分辨較困難，氣和水在測井曲線上的響應比較接近，過去解釋的部分氣層測試卻產水，常規的測井解釋方法很難將二者區分開。A plane curve formed by the locus of points equidistant from a fixed line and a fixed point not on the line
拋物線到一固定直線和不在直線上某一固定點等距的點的軌跡所形成的平面曲線With the method of the coorinate transformation, the coordinate calculation equation of the arbitrary point of the top - class highway in the control coordinate system is deduced and the detailed point of the plane curve will set out accurately and quickly in the arbitrary control point by the means of pc - e500 computer program
摘要介紹通過坐標變換的方法導出高等級公路中平曲線上任意點在控制坐標系中的坐標計算公式，並配合pc - e500計算機計算程序，從而在任意控制點上採用極坐標法快捷、準確地放樣平曲線上的詳細點。By way of theoretical analysis, the relationship between settling angle on a planar curve and the polar coordinates of the same curve was obtained, and the polar equation of a curve that passed through two fixed points and had the specified directions at these two points was also derived
摘要通過理論分析與數學計算獲得了平面曲線上任一點處安放角與曲線極坐標方程的關系，同時導出了通過平面上兩定點且在兩定點處有給定方向的曲線的極坐標插值方程。In this thesis, the basic problem of network security, some correlative protocols and cryptology are discussed at first, math theory in point is also studied. especially, a sort of new matrix method of solving quadratic equation over gf ( 2m ) is given, which is the key of selecting random point over elliptic curves. no better solution has been found in related literature in the world. compared with ieee p1363 ' s method, it is easy to implement the software and obtain high efficiency, etc. then the basic operation of elliptic curve is debated and the steps of finding secure curve and basis point over gf ( 2m ) are presented. moreover, the encryption and decryption schemes of the ecc are designed and the security problem of ecc is also considered. in the end, ecc by koblitz curves are implemented
文章首先討論了網路安全基本問題、網路安全協議和密碼學；對相關數學理論進行了研究，特別是給出了一種新的求解gf （ 2 ~ m ）上二次方程的矩陣法，而它是選取橢圓曲線上的隨機點的關鍵步驟，和ieeep1363的方法相比，它有易於軟體實現、效率高等優點，在國內外相關文獻上還未見到更好的求解方法；接著討論了橢圓曲線的基本運算，進而給出了在gf （ 2 ~ m ）上選取安全曲線及基點的步驟；文章還設計了橢圓曲線加密系統的加解密方案，討論了橢圓曲線系統的安全性問題。最後文章就koblitz曲線加密系統進行了軟體實現。The p - elastica, the critical point for the total polynomial curvature functional on those curves with a fixed length satisfying given boundary conditions, is discussed
主要研究了在具有固定長度、且滿足給定邊界條件的曲線上定義的總多項式曲率泛函的臨界點，即所謂p -彈性曲線。As a result, the curves of c3 and c4 continuity can be generated, and the shape of the curves can be adjusted by the parameters x. the quadratic non - uniform b - spline curves are further extended and the continuity of curves is improved in this paper ; with a local shape parameter in each piecewise curve, the shape of the curves can be controlled effectively ; moreover, cusps of curves can be generated conveniently on the curves while using multiple knots
對二次非均勻b樣條作了進一步擴展，提高了曲線的連續性；曲線的每一段上都有一個局部控制參數，利用它們可以更有效的控制曲線的形狀；同時，利用曲線的重節點可以很方便的在曲線上構造尖點。作為b樣條擴展曲線的應用，作者將上面構造的各次調配函數應用到三次- b樣條插值曲線上，得到下述結果。It is shown that for a curve with corners, it always shrinks at the corner points firstly ; and as the scale increases, all the fine features on the curve will disappear
所得到的理論表明，帶有角點的曲線在尺度空間中往往從角點處最先收縮，且整個收縮過程一般以曲線上的細節特徵完全消失而告終。After getting chain code in the stage of image segmentation, we introduce. the concept of chain code sum, and propose the method of detecting projective - invariant key points on the contour of airplane
隨后在圖像分割階段得到鏈碼的基礎上，引入了鏈碼和的概念，提出了利用三點鏈碼和檢測飛機邊緣曲線上的透視不變點的方法。In terms of performance, the group starts at a level slightly below the sum of the individuals ' levels and then drops abruptly to its nadir until it climbs during norming to a new level of performing which is ( hopefully ) well above the start
表現在曲線上，最初團隊水準略微低於團隊中個人水準的總合，然後在震蕩階段跌落最低點，在經歷規范到表現階段之後就會有所突破（希望是這樣） 。分享友人