diffusion approximation中文什么意思

發(fā)音:

用"diffusion approximation"造句

擴散近似法

diffusion: n. 1.散布，發(fā)散。 2.傳播，普及。 3.冗長。 4 ...
approximation: n. 1.接近；近似。 2.【數(shù)學(xué)】近似值。 3.概算， ...
age diffusion approximation: 年齡擴散近似
approximation: n. 1.接近；近似。 2.【數(shù)學(xué)】近似值。 3.概算，略計。 successive approximations 逐次近似計算法。 be a very close approximation to 很接近于…。
approximation approximation: 近似，逼近

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Diffusion approximation for a re - entrant network under the priority service discipline
一類重入型網(wǎng)絡(luò)在優(yōu)先服務(wù)原則下的擴散近似
Validity of the diffusion approximation in determining the optical properties of biological
漫射近似在測量生物組織光學(xué)性質(zhì)中的適用范圍
Using the method of stochastic analysis , we demonstrate c - tightness of the scaled queue length processes and derive a sufficient condition for the existence of the diffusion approximation under a general priority service discipline
在優(yōu)先服務(wù)原則下，給出了這類網(wǎng)絡(luò)的標準化隊長過程擴散近似存在的充分條件。
In the section 2 , firstly based on the diffusion approximation theory , the temporal characteristics of the reflectance and the transmittance were theoretically analyzed in turbid tissues ; secondly , the curves were simulated that the intensity and the pulse shape of the time resolved reflectance and transmittance versus the absorption a , the scattering s and the anisotropy coefficient g in two different boundary conditions : semi - infinite turbid media and homogeneous slab ; at last , the optical properties can be derived from the curves ; in the section 3 , the conditions of ultra short laser pulses of different pulse - width and shapes has been theoretical analyzed and calculated , besides , the simulated the curves of the intensity and pulse shapes of the reflectance and transmittance in a homogeneous slab are obtained for use and future studying
第二章中首先根據(jù)漫射近似理論對超短脈沖在以生物組織為典型的混濁介質(zhì)中傳輸進行了理論分析，然后對兩種邊界條件下產(chǎn)生的漫反射、漫透射光脈沖強度和形狀隨各光學(xué)特性參數(shù)的變化情況進行了數(shù)值模擬，最后得到了混濁介質(zhì)的光學(xué)特性參數(shù)與漫反射、透射脈沖強度與形狀的關(guān)系曲線。第三章對不同形狀和脈寬的脈沖光源入射到混濁介質(zhì)中產(chǎn)生的漫反射、漫透射脈沖的強度和形狀進行了理論分析和數(shù)值模擬，并將高斯脈沖與方波脈沖情況進行了對比，得到了各種情況的漫反射、漫透射脈沖強度、形狀與各光學(xué)特性參數(shù)的關(guān)系曲線，這對從分析脈沖形狀中提取介質(zhì)的光學(xué)特性參數(shù)的信息有重要的意義。
Then the model is simplified , the theory of martingale , simulation , and diffusion approximations are discussed firstly . these methods are applied in the model . then get some useful results , so we can estimate the upper bound for the ruin probability and the approximation of the finite time ruin probability
并詳細的討論了模型有限時間內(nèi)破產(chǎn)概率和最終破產(chǎn)概率的估計，應(yīng)用隨機過程序列弱收斂，鞅以及隨機模擬等理論，得出一些有意義的結(jié)果? ?在有限時間內(nèi)破產(chǎn)概率的逼近表達式；最終破產(chǎn)概率的上界和有限時間內(nèi)破產(chǎn)概率上界；有限時間內(nèi)破產(chǎn)概率的隨機模擬算法；并得到最終破產(chǎn)概率滿足的泛函方程。