曲率不變式 的英文怎麼說
中文拼音 [qūlǜbùbiànshì]
曲率不變式
英文
curvature invariant-
It is found that with fixed laser power and increasing exposal time, the increasing of the depth of exposal grows slower, the exponential increasement can be express by the equation :, the depth of exposal becomes satured with increasing exposal time ; with fixed exposal time and increasing laser power, the depth of exposal increases linearly and can be express by the equation : y = 40
結果表明，當固定曝光功率，不斷增加曝光時間時，曝光深度的增加趨于緩慢，程指數曲線形式變化，可表示為，當曝光時間不斷增加時，曝光深度的增加趨近於飽和;當固定曝光時間，不斷增加曝光功率時，曝光深度程線性趨勢增加，可表示為y = 40 . 5x0 . 151y = 0Firstly, 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 。Based on the tribological principle and the theory of contact mechanics, it is feasible to adopt curvature - changing structure in the rock - bit journal bearing system. the structure and coupling relationship of curvature - changing journal bearing under the condition without friction have been analyzed and three kinds of sub - form structure configurations, namely, the pseudo - curvature - changing structure, the conformable curvature - changing structure, and the clearance curvature - changing structure, been differentiated according to the contacting features. the shape optimization and pre - running - in regulations of the contact surface of curvature - changing journal bearing under friction condition have been established. the results of rock bit journal bearing test indicate that the tribological behavior of the bearing can be effectively improved by curvature change based on both designing and pre - running - in
基於摩擦學原理和接觸力學理論，提出了可在牙輪鉆頭滑動軸承中採用變曲率結構.在不考慮摩擦的情況下，就結構設計和配合關系等問題進行了分析討論，劃分了準變曲率、吻合變曲率以及間隙變曲率等3種結構形式；針對考慮摩擦時的變曲率結構，提出了接觸形狀優化和預磨合的實施方案.鉆頭軸承試驗結果表明，無論是預設計變曲率還是預磨合變曲率，都能改善軸承摩擦副的摩擦學特性，因而值得進一步研究和推廣Considering the similitude law for shaking table test, we study the test results and obtain some conclusions which are a ) generally, the silty soil in test box liquefies and the liquefied time has relation with the amplitude of acceleration, b ) when the intensity is on and above eight degree, the silty soil deposit will be liquefied dramatically, c ) the relationship of the pore water pressure is relevant to the cycle loading which represents when the cycle loading ranges from little to great, the relationship is represent as a concave curve, or else as a protruding curve and tends to stability. ( 3 ) based on the triaxial compression test and the resonant column test, some studies are made such as a ) the duncan - chang parameters of constitutive model, b ) the dynamic shear modulus ratio and c ) the damping ratio of the site soil deposits. in order to deal with the test data, a computer program is compiled
（ 2 ）利用小型振動臺進行了k _ 0固結狀態下粉土的振動液化模擬研究，通過分析正弦荷載作用下的試驗資料，驗證了粉土的孔隙水壓力增長模式的合理性；從微分方程推導了基於土體振動臺模型試驗的相似律，並從模型實體、孔壓時程曲線和相似律等方面做出了分析，得出了如下結論：在小型振動臺試驗中，模型箱中的粉土都發生了液化，液化的時刻和輸入加速度幅值有關，而對頻率的變化不太敏感；粉土在相當於8 9度地震烈度的加速度幅值作用下可能產生嚴重的液化；孔壓的增長曲線形狀與施加的荷載有關：當施加荷載為由小到大的形式時，曲線形狀為上凹的曲線；當施加荷載為等幅的正弦荷載或荷載幅值由大到小時，曲線形狀為上凸的曲線，且逐漸趨于穩定。Fluorescence power transfer function, three - dimensional point spread function ( 3d - psf ) and three - dimensional optical transfer function ( sd - otf ) for the various fluorescent wavelength of the two kinds of fluorescence confocal scanning microscopy are calculated in this paper by using fourier imaging theory. the results show that the fluorescent wavelength has influence on imaging property of confocal microscopy such as spatial cut - off frequency, resolution and 3d - otf. there is a different missing - cone in the 3 - d space of otf when the ratio of excitation wavelength to fluorescent wavelength decreases
本文在sheppard和gumin等人的理論基礎上，利用fourier光學成像理論，討論了不同熒光波長對單光子和雙光子共焦顯微鏡成像特性的影響，導出了單光子和雙光子共焦顯微鏡的熒光功率傳輸函數、三維脈沖響應函數和三維光學傳遞函數，得到了它們在不同激發波長與熒光波長比值時具體的表達式，並且通過數值計算，得到了它們的曲線圖，結果表明：隨著激發波長與熒光波長比值的增加，焦斑的橫向分佈和縱向分佈變窄，橫向解析度和縱向解析度提高，系統的成像效果變好，當激發波長與熒光波長的比值下降到一定程度時，可以看到不同程度的失錐現象。It ' s the first time clearly and systematically to present the concepts of restraint influence coefficient of steel to strain increment, to curvature increment and to deflection increment due to creep which are different each other. theoretical formulae are established, and approximate formulae are also obtained while considering the characteristics of common - used concrete and ambient condition of real bridges in china. so, an approximate restraint influence coefficient method to analyze the effect due to creep and shrinkage in pc bridges is put forward, and the equations to estimate second - force due to creep considering influence of steel in system - transferred continuous pc bridges is also established
本文首次清晰而系統地提出了鋼筋對徐變的不同效應（徐變應變、徐變曲率、徐變上拱）約束影響系數的概念，建立了相應的計算式；結合我國普遍採用的混凝土的徐變特性和橋梁的構造特點及工作中南大學博士學位論文摘要環境特徵，給出了具有較高計算精度的實用計算式;在此基礎上，建立了橋梁徐變效應近似分析的鋼筋約束影響系數法，並推導出了考慮鋼筋影響的超靜定梁徐變次內力的近似計算式，可方便地應用於橋梁研究和設計中。Then, this paper edits other computer program to calculate thirty sgrc frame columns, and researches the drift capacity of sgrc frame column, and analysis the turning capacity of frame column " s plastic hinge. then the relational expression of the curvature ductility factor and ratio of hoops of sgrc frame columns is derived. this paper analysis the relation of the curvature ductility factor and the relative drift of sgrc frame columns, and discuss the question of the minimum values of ratios of hoops of sgrc frame column at different axial load ratios
一11一太原理工大學碩_ i :學位論文使用本文程序另外模擬計算了30榻煤研石混凝土框架，進一步分析了軸壓比和配箍率對煤研石混凝土框架柱曲率延性的影響，編寫程序計算了30根煤研石混凝土框架柱，對煤研石混凝土框架柱的側向變形能力進行了研究，分析了柱塑性鉸的轉動能力，導出了煤研石混凝土框架柱的曲率延性系數與配箍率的關系式，分析了煤研石混凝土框架柱的曲率延性系數與框架柱相對側向位移的關系，討論了煤研石混凝土框架柱在不同軸壓比下最小配箍率的取值問題。The research indicate that the structured soft clay has below several characteristic, the viscous strain is produced during the stage of primary consolidation and of second consolidation, and in the prophase, the relation of stress - strain - strain rate is unique, so the form of constitutive model, such as, f ( v ', e ) = 0, f ( ' v, e, t ) = 0, ca n ' t describe strain behavior of soil skeleton rationally ; the time - dependent properties involve three aspects, in addition the time - dependent strain, apparent preconsolidation pressures that depend on strain rate, and the effect of creep compression on apparent preconsolidation pressures ; because of holding structural strength, the mechanics characteristic is determined by the magnitude of stress, and the compression curve is composed of several sections. by combining structural yield stress and it ' s characteristics with the improved time line model, a new one - dimensional elastic visco - plastic consolidation model is established
研究結果表明，結構性土的固結過程具有以下特性：主固結和次固結階段都包含有因土骨架的粘滯性移動而產生的變形，而且在正常固結階段，存在應力?應變?應變速率的唯一性， f （ _ v ， e ） = 0 、 f （ _ v ， e ， t ） = 0形式的本構關系不足以描述土骨架的變形行為；固結壓縮過程中的時間效應包括三個方面的內容，除了應力應變關系與時間相關外，還包括粘滯性變形引起表觀前期固結壓力增加和屈服應力的應變速率效應；軟土的結構性使其力學特性與應力水平相關，壓縮曲線具有分段性。It can be concluded that the performance differences between the plate membrane and the hollow fiber membrane can be attribute to difference of the stresses in the membranes when they were under pressure and the difference of the strain caused in the membrane, besides the possible reason that the surface curvature difference between a plate substrate and a hollow fiber one may cause structure difference in the dense functional layer when coating. the stresses in a hollow fiber composite membrane under an outside pressure are quite different from that in a plate one in that they exert on the hollow fiber in both the radial and circular directions, and the compress strain of the hollow fiber is thus much more complex, which may cause the top layer crinkle and a decreased salt rejection
分析認為造成平板復合膜（ ）和中空纖維復合膜（ ）性能差異的主要原因，除了平板基膜與中空纖維基膜因表面曲率不同可能引起在塗覆時形成的緻密功能層結構上的差異之外，由於中空纖維膜受外壓時，膜內部承受的應力形式與平板膜不同，會同時在徑向（膜厚度方向）和環向（膜面內方向）兩個方向產生壓應力，因此，所發生的形變也較為復雜，可能造成表面復合層的起皺或脫落，引起脫鹽率下降。The result indicates : when the transverse crack was contained in the crankshaft, the crankshaft ' s natural frequency reduced obviously, but does not change the vibration form of every type
結果表明，曲軸在含有橫向裂紋后，其固有頻率有很明顯的降低，但是不改變各階振型的振動形式。因此，固有頻率的降低可以作為曲軸中含有橫向裂紋的標志。To analyze the seismic behavior of the lattice type src members, look for a section patterns which is not only safety but also economic, in this paper, a experiment of seismic behavior about nine truss type src columns and three rc columns which strength, steel requirements and axial load are different, the deformation capacity and failure patterns are observed, and the hysteretic cycle are obtained. according to the experiment results, it is different between the failure patterns of src members and rc members
為了分析空腹式鋼骨混凝土的抗震性能，尋找一種即安全又經濟的src截面形式，本文對9根不同強度、不同配鋼率、不同軸力的src試件和3根普通rc試件做了抗震性能試驗，在保持軸力不變的情況下，採用荷載? ?變形混合控制方法施加往復的水平荷載，觀察其變形性能與破壞狀況，測得各試件的滯回曲線。It analyzes the dynamic response of many different damage cases of simple i - shape beam structure and discusses their influences to natural frequency and modal curvature. it is found that the natural frequency and modal curvature can be used in identifying the severity and location of structural damage respectively. dynamic response of some real beams are measured and compared to the results analyzed by computer, it is found that there are some differences between them and the main reason is the error caused by modeling
2 .針對土木結構中最為常見的梁式結構，對簡支工字鋼梁的多種不同損傷工況的動力特性進行了有限元模擬分析，研究了損傷對頻率和模態曲率的影響，發現固有頻率變化率和模態曲率的變化分別可以用於損傷程度和損傷位置的識別;在實驗室中實測了幾種工況的鋼梁的振動模態，發現實測結果與計算結果有一定的差異，分析其原因主要是模型誤差和噪聲影響。The static triaxial test is performed on composite cemented clay samples and parameters of duncan - chang model are obtained considering the effects of replacement ratio and confining pressure. the effects such as replacement ratio, strain amplitude and confining pressure on the dynamic modulus and damping ratio of composite cemented clay samples are analyzed through undrained dynamic triaxial test. fitting equations estimating the dynamic modulus and damping ratio through regression analysis are deducted with the effects of replacement ratio, strain amplitude and confining pressure
通過不排水動三軸試驗詳細地分析了置換率、應變幅和圍壓等因素對水泥土復合試樣動模量和阻尼比的影響，根據有關數據，得到了較為完整的復合試樣的動力變形曲線，通過回歸分析方法，得到了考慮置換率，應變幅和圍壓影響的水泥攪拌樁復合試樣動模量和阻尼比的擬合公式。According to the supply system composed by parallel connection water pump, many kinds of operation proposals in a single pump were put forward to provide the greatest possible flow on both sides of the demarcation point in the scope of the flux changes ; identified the system of pumps, electromotor, speed governor imitate method of characteristics curve of the power device and its rotating speed, efficiency, energy consumption calculation under different condition ; the analytical methods used for the operational plan for comprehensive evaluation of the economic and safety and optimal results
摘要針對由並聯水泵組成的供水系統，提出了在以單泵可能提供最大流量為分界點的兩側流量變化范圍內具有多種運行方案；確定了在不同工況下，該系統中水泵、電機、調速器特性曲線的擬合方法及其各動力裝置中轉速、效率、能耗的計算式；採用解析的方法對各種運行方案進行了經濟性和安全性綜合評價，並給出最優結果。The curvatures of the curves between total formation conductivity c, and total water saturation swt, are greatly affected by formation matrix conductivity cma, while it is less affected by clay conductivity ccl. the curvatures of the curves between c, and swt are only affected by w, a factor number that is related to relative volume of water content in the formation, while is not much affected by the matrix factor number ma. when ct is kept to be constant, swt increases ash ma increases, and decreases as w increases
通過對該模型的影響因素分析，發現泥質分佈形式對模型計算的含水飽和度有很大影響；隨cma變化， ct與swt關系曲線的曲率發生變化；隨ccl變化， ct與swt關系曲線的曲率基本不變；只有或_ w變化， ct與swt關系曲線的曲率發生變化；只有_ （ ma ）變化， ct與swt關系曲線的曲率相近； ct一定， swt隨或_ （ ma ）增大而增大，隨_ w增大而減小。This text thinks that the verse language is different from usually a kind of special art language of the language, prose language, verse language a type is basic characteristic that verse of so for verse, it make the general language sentence produce the special the magic power of expression. this kind of special a type, the ancients calls it as language that " poem house language ", the modern linguistics thinks that this is to phonetic distortion in normal regulations with variation, is phonetic " not seen before turn ", verse phonetic a type, as a result also is called " not seen before turn ". because not seen before, the concern that increased the reader dialogue language oneself, as a result also expanded the phonetic the content of expression with postpone outside, increase phonetic the efficiency of expression
本文認為詩歌語言是不同於日常語言、散文語言的一種特殊的藝術語言，詩歌語言句式是詩歌之所以為詩歌的根本特質，它使一般語句產生了特殊的表達魅力。這種特殊句式，古人稱之為「詩家語」 ，現代語言學認為這是對常規語言的扭曲和變異，是語言的「陌生化」 ，詩歌語言的句式，因而也被稱為「陌生化」的語言。由於陌生，增加了讀者對話語本身的關注，因而也擴展了語言的表達內涵和外延，提高了語言的表達效率。分享友人