量子蒙特 的英文怎麼說
中文拼音 [liángzimēngtè]
量子蒙特
英文
quantum monte carlo method-
The remote sensing quantitative retrieval model for the appraisable factors of desertification monitoring are founded. in naiman country, inner mongolia, the experimental area, the hyperspectral imaging spectrometer data in plant growth seasons are collected by state - produced airborne hyperspectral imaging spectrometer omis - i, and the etm + image is also obtained. meanwhile, ground investigation and measurement are made, which include the measurement on reflection feature of different kinds of geo - targets and the ground investigation data necessary for spectral rebuilding and retrieval models of the appraisable factors of desertification monitoring
本研究以內蒙古奈曼旗作為研究試驗區，採用我國自行研製的機載高光譜成像光譜儀omis - ，在植被生長季節取得高光譜解析度成像光譜儀數據和etm ~ +圖像，並進行了同步的地面調查及量測，包括不同類型地物反射特性量測和光譜重建以及荒漠化監測評價因子定量反演模型所必需的地面樣方調查數據。It is just the difficulty that the strongly correlated electron systems can not be studied by analytical methods, a variety of simulative numerical methods come out sequentially. there are a few typical methods such as the exact diagonalization ( ed ), the qutum monte carlo ( qmc ), the variation monte carlo ( qmc ), the renormalization group ( rg ), and the density matrix renormalization group ( dmrg ) and so on
正是強關聯系統遇到了解析研究的困難，各種數值模擬方法才相繼出現，最典型的數值方法有：嚴格對角化（ ed ） ，量子蒙特卡洛（ qmc ）模擬、變分蒙特卡洛模擬（ vmc ） 、數值重整化群（ rg ）以及密度矩陣重整化群（ dmrg ）等。Its main contributions include the following several aspects : firstly, the dissertation constructs the mathematic model of short baseline orientation determination using two geostationary satellites and analyses the applicable conditions of carrier phase interferometry. orientation determination precision is analysed in depth through both the conventional linearized method and monte - carlo computer simulation method, and the mathematical simulation results show that the linearized method has the shortcoming of fairly low elevation error analysis precision in high latitude area so as not to be very appropriate there. by analyzing the definite factors influencing orientation precision, the dissertation develops the concept of orientation dilution of precision, which uncovers the internal cause of exotic error behavior of bi - satellite orientation, and has important guiding significance for practical engineering applications
本文系統地研究了基於「北斗一號」衛星載波相位干涉測量原理實現地球靜止雙星定向的相關技術，主要研究成果包括以下幾方面:首先，建立了利用兩顆地球靜止軌道衛星進行短基線定向的數學模型，分析了載波相位干涉測量的適用條件;採用傳統的線性化解析法及蒙特卡洛隨機模擬法兩種途徑對雙星定向的精度進行了詳細分析，數學模擬結果表明在高緯度地區線性化解析法由於俯仰角誤差分析精度略有下降而不太適合;在分析定向精度確定性影響因素的基礎上，提出了雙星定向精度衰減因子odop的概念，揭示了雙星定向誤差特殊表現的內部機理，對實際工程應用具有重要的指導意義。The position and size of the monochromator, focusing curvature radii and tilting angles of the germanium focusing monochromator under different different take - off angle, size and divergency of the second collimator and intensity loss due to the use of it were determined. the neutron flux at different wavelength, under different reflection and take - off angle of the monochromator and divergency of the first collimator, were given. the simulation on the aperture used for limiting beam size in front of the sample showed that, smaller the size of the aperture and further the distance from the aperture to the sample, greater the loss of the intensity and more serious the spread of the beam along vertical direction at the sample position which makes the practical sampling volume greater than expected
用蒙特卡羅模擬方法對中子應力衍射譜儀的設計方案進行了優化研究，提出了一系列可供參考的數據：確定了單色器的位置、尺寸、垂直聚焦單色器在不同起飛角下的聚焦曲率半徑和傾角；討論了第二準直器的尺寸和發散，以及使用第二準直器造成的強度損失；給出了在不同單色器反射面、起飛角、中子波長和第一準直器發散度的情況下樣品處的中子注量率，以及多種組合情況下譜儀的解析度曲線；對限束方孔的尺寸、距離樣品遠近對強度損失和測量中的影響做了深入研究。According to the demand of the concept design of china spallation neutron source ( csns ), the target station, i. e. the target, the reflector and the moderator have been simulated and optimized using monte carlo simulation software, nmtc / jam and mcnp4a, firstly. the neutron flux escaping from the target and the moderator and the heat deposition in the target, the reflector and the moderator are calculated. these results provided essential data as a basis of the spallation neutron source design
本論文結合當前中國散裂中子源（ chinaspallationneutronsource ， csns ）工程概念設計的迫切需要，選擇國際上廣泛使用的基於蒙特?卡羅方法，用於模擬粒子輸運過程的程序mcnp4a和nmtc jam作為研究工具，首次對csns靶站進行了全面的模擬與優化，內容包括靶、反射體與慢化器系統的中子通量分佈以及熱量沉積，同時計算了靶的溫度場與應力場分佈。Because of its specific structure and appropriate cation exchange capacity ( cec ), montmorillonite has been used in the preparation of polymer / layered silicate nanocomposites
由於蒙脫土（ montmorillionite ， mmt ）具有特殊的結構和適中的離子交換容量，可用於制備聚合物/層狀硅酸鹽納米復合材料。In addition, eece publications is successfully making eagle s english education synchronous with north america s. studying english at eagle gives children the same results as studying english abroad. eagle s education system model and comprehensive operating guidance model will help students, parents, and franchise partners to experience the same success as our existing students, parents, and franchise partners
而孩子因為英文能力的及早啟蒙及在正規教育下奠定的根基，家長可體驗到孩子已養成大量閱讀習慣主動探索新知的能力善於表達理念情感及尊重群體規范的菁英特質，弋果總是讓孩子成長的過程表現得比同儕優異且更具自信心。This paper deals with the monte carlo simulation of high - energy protons transport in silicon, in which the intra - nuclear cascade model is used to deal with proton nuclear reaction process. and the results of radiation effects of proton in silicon and p - seu ( proton induced single event upset ) cross section of some electronic devices are presented
本文用蒙特卡羅方法對高能質子（最高能量在500mev以上）在硅材料中的輸運過程進行了模擬，作了用核內級聯模型計算質子核反應的嘗試，計算了質子對硅材料的輻射效應及其對硅器件的單粒子效應。The generic methods for the calculation about the binding energy of d - centers are variational and diffusion quantum monte carlo methods
在計算d ~ -中心的束縛能時，理論工作者們一般採用的是變分法或離散量子蒙特卡羅方法計算d ~ -中心的基態能。It takes advantages of modern computer to fit all the experimental information, hence a very powerful pwa method. in this thesis, we use this method to analysis hadrons japdecay model jap - > ( ptt - tr + and j p radioactive decay model based on the pwa amplitude, we received mass distribution of two outgoing pious and angle distribution of the outgoing particles using the cern program. finally we compared tow different form factors ( barrier factors and gauss factor ) wh ich were always used the calculating of pwa amplitude
本文採用這種分析方法給出的j強衰變j ~ - ~ +和j粒子輻射衰變j ~ - ~ +分波振幅公式，利用cern的蒙特卡羅模擬程序繪出了末態粒子的角分佈和不變質量分佈，對分波分析中常用的兩種動力學形狀因子（中心位壘因子和高斯壓低因子）進行了研究比較。In this thesis, the pet / montmorillonite ( mmt ) nanocomposites and pure pet with high molecular weight were prepared by solid state polycondensation ( ssp ) so as to meet the needs of industrial fiber. the fiber was spun and drawn in proper conditions. the microstructure of pet / mmt nanocomposites was studied
本論文以常規分子量的聚對苯二甲酸乙二酯蒙脫土（ pet mmt ）納米復合材料和純pet為原料，通過固相縮聚的方法，來提高樣品的特性粘度，使之達到工業用纖維所需的分子量要求。Measurement and monte - carlo correction of neutron radiative capture cross section for 75as
中子輻射俘獲截面的實驗測量及蒙特卡羅修正Based on the principle of molecular dynamics, a sampling method in direct simulation monte carlo ( dsmc ) method for molecular total and translational energy, and the heat flux vector nearby the wall boundary is proposed
摘要從分子動力學出發，討論了直接模擬蒙特卡羅方法中分子平均總能量、平均平動能以及邊界熱流密度的抽樣方法。分享友人