擬特提斯 的英文怎麼說
中文拼音 [nǐtèdīsī]
擬特提斯
英文
paratethys-
First this paper describes the composing and technics of drillers ; then the composing of control system based on s7 - 300plc is described ; then thinking of such characteristics of oil driller as complexity and long delay, this paper brings forward the control strategy of combining the fuzzy control with smith estimate control algorithm, and sets down the way of auto - driller based on discal hydraulic pressure brake. at last the experiment based on matlab by computer shows that the effect of this control mode is very good and all performance are famous
首先本文闡述了鉆機的組成與工藝特點，然後描述了基於西門子s7 - 300plc的控制系統組成，然後針對傳統鉆機自動送鉆控制策略落後的缺陷，同時考慮到鉆機的復雜性、大滯后等特點，提出了模糊控制演算法與施密斯（ smith ）預估控制演算法相結合的控制策略，給出了基於液壓盤式剎車的自動送鉆智能控制策略， matlab的模擬實驗證明該控制方式控制效果良好，各方面性能指標都達到理想要求。Thereafter, the applications of go sequences in single - cell s - cdma systems are discussed in this thesis. in additive white gaussion noise ( awgn ) channel, interference components in s - cdma systems accommodating more users than the spreading factor is analyzed based on the theoretical bound of the periodic correlation mean square property. then two interference - suppressed s - cdma system models of augmented capacity are proposed, along with the analysis and simulation results
在加性白高斯噪聲（ awgn ）通道條件下，以序列集周期相關均方特性理論界為基礎，對序列個數大於系統擴頻因子的s - cdma系統干擾組成進行了分析，並基於截短wh序列提出了兩種高容量低干擾s - cdma系統模型，給出了分析和模擬結果。A scheme to be formulated and submitted for approval to the harbour commissioners for the exploitation of white coal hydraulic power, obtained by hydroelectric plant at peak of tide at dublin bar or at head of water at poulaphouca or powerscourt or catchment basins of main streams for the economic production of 500, 000 w. h. p. of electricity
有個建造水力發電廠的計劃：利用都柏林沙洲的滿潮噗啦呋咔272或鮑爾斯考特瀑布273的水位差主要河流的流域來開發白煤水力發電，經濟生產五十萬水馬力的電力。擬好后，將提交港灣委員會，以便獲得批準。The super resolution effect of sb layer super resolution structure is also investigated with near - field scanning optical microscope. in addition, a rigorous three - dimensional ( 3d ) optical electromagnetic finite - difference time - domain ( fdtd ) model for analysis of a sil system is detailed. in order to accurately analyse sil model, a new method of setting a focused gaussian beam source in fdtd grids is presented
此外，本文還建立了對sil系統光傳輸特性進行模擬的時域有限差分程序，提出一種在fdtd模擬的離散空間設置會聚高斯光源的新方法，並模擬了會聚高斯光束在sil系統中的傳輸，研究了sil在不同離焦情況下底面出射光場幅度及光束半徑的變化規律，為sil存儲系統的優化設計提供了理論依據。A systematic summary of previous work has been given first. then this paper presents a novel multi - stage face detection algorithm, which makes a good use of human face pattern ' s valuable information in colour image sequences. the difficult detection task has been divided into four steps : the preprocessing, which is to gain skin colored regions with human skin color model ; the roughly detection and face region refining by elliptic curve fitting ; the fine detection with facial features " detection and location ; the face / non - face classification step based on pca and gaussian density estimation technique
本文對彩色序列圖像中的人臉檢測和跟蹤技術進行了深入的研究，其具體內容為：對近年來的研究工作進行了系統的介紹；提出了一個由粗到細的多階段的人臉檢測演算法，該演算法充分利用了序列圖像中人臉模式的各種有用信息，將復雜的檢測工作分為了四個部分：膚色區域分割預處理，人臉粗檢及利用橢圓擬和的人臉區域提煉，應用人臉基本特徵檢測和定位的人臉細檢， pca結合高斯概率密度估計的人臉驗證。In the second part of this paper, it makes a detailed analysis among fluid - model - based, smith - principle - based and two - pd - controllers - based by comparing to the method and application of control theory. then it gets the laws to keep the control loop stable. in order to analyze the dynamic and transient characters, three congestion control algorithms mentioned above have been carried out in the nist atm network simulator and the successful outcomes are brought out
本論文對atm網路abr業務擁塞控制的控制理論演算法進行了總結，簡要分析了其優點和缺點；運用控制理論的分析方法和觀點對基於流體控制模型、史密斯預估控制模型和雙重比例微分控制模型三種擁塞控制演算法加以具體的分析，從而分析了怎樣確保控制環的穩定性；在nistatm網路模擬軟體中嵌入以上三種擁塞控制演算法，從而對演算法的動態和瞬態特性進行模擬分析，以此證明控制演算法的有效性；最後提出了今後atm網路abr業務擁塞控制演算法的發展趨勢。In this thesis, first, we present the theory of sess system, the generation of the sess spreading code and its characteristics and the acquisition theory of conventional spread spectrum communication system. an efficient acquisition scheme based on periodically transmitting the synchronization head, which is composed of binary chaotic codes, using the matched filter and automatic decision threshold - level control based on a so - called constant false alarm criterion for sess system is present. the acquisition model of sess system is built and simulated in the awgn channel, the raleigh fading channel and imulti - address interfere condition
本文首先概述了自編碼擴頻通信的原理、自編碼擴頻序列的產生方法及其特性和擴頻通信系統編碼同步的理論，然後針對自編碼擴頻通信系統提出了擴頻序列捕獲方案:周期性地加入混沌序列同步碼，並採用恆虛警率匹配濾波器捕獲法;在加性白高斯噪聲通道、瑞利衰落通道和多址干擾情況下進行了模擬，分析了各種捕獲性能:在選擇性能最優的混沌序列、適當的序列長度、虛警概率及門限值的情況下，可以獲得較短的捕獲時間和較大的捕獲概率。There are three steps of the concrete process of the algorithm : initial localization, separating image and confirmation. firstly, single gaussian model is used to imitate skin - color distribution, meanwhile, skin probability images which is smoothly disposed using middle wave is calculated to attain the initial localization. secondly, in order to separate the latent face region, it uses multimodal information that includes the region growing 、 the hue and brightness 、 skin probability images etc. at last, it adopts the criterion of morphology analysis and face characteristic draw to confirm the latent region
演算法的具體過程主要分為三個階段:人臉初定位、人臉分割和人臉確認，首先採用高斯模型來模擬膚色分佈並構造出膚色概率圖進行人臉的初定位，並對膚色概率圖採用中值濾波進行平滑處理，接著利用區域生長準則和融合色度、亮度以及膚色概率圖等多源信息相結合的方法對圖像進行分割，以達到分割出潛在臉區的目的，最後採用人臉整體形狀的確認準則和人臉特徵提取的確認準則相結合的方法對潛在臉區的最終確認。This paper presents a new face detection algorithm for color video images based on skin color and multimodal information fusion. first, this paper presents a new means for selecting skin samples ; and then comparing skin distribution in the eight color spaces and analyzing the adaptability for different skin patterns, poses a face initial orientation ' s method which uses the single gaussian model in the tsl color spaces, and calculates skin probability images ; afterwards comprehensive comparing three typical threshold value separating algorithms, put forwards a face separating method which bases on region growing and fuses multimodal informations ; final, raises a face confirming algorithm which fuses three shape features
首先提出了?種新的膚色樣本選取方法；然後通過對八種色空間膚色分佈的比較以及不同膚色模型適應性的分析，提出了在tsl色空間上用單峰高斯模型模擬膚色分佈，求得膚色概率圖進行人臉初定位的方法；隨后在綜合比較三個典型閾值化分割演算法的基礎上，提出了融合多源信息進行區域生長分割人臉的演算法；最後提出了融合三個形狀特徵的人臉確認演算法。The thesis was written under the direction of dynamic theory of forming reservoir, follows the rules of comprehensive information, judgment, interpretation and assessment and even makes full use of outcrop geology, data from drilling and logging, data from laboratory analysis and achievements in geophysical exploration. considering the basic factors of forming reservoir in the south of ordos basin as the starting point, the thesis defines that yanchang group of triassic goes into the start of generating oil in the late period of mid - jurassic and that the largest oil generation peaks in the middle period of early cretaceous, after the analogue - history of hydrocarbon generation. meanwhile it also establishes the relationship between the evolution of oil and gas and the formation of traps, the time of oil exploration
本文以成藏動力學理論為指導，本著綜合信息、綜合判斷、綜合解釋、綜合評價的原則，充分利用露頭地質，鉆測井資料，實驗分析資料及物化探成果，以鄂爾多斯盆地南部的基本成藏要素為出發點，通過生烴史模擬，確定了三疊系延長組在中侏羅晚期（ 150ma ）進入生油門限，于早白堊世中期達到最大生油高峰期；同時並確立了油氣演化與圈閉形成、捕油時間的關系；通過流體勢的全區計算，提出了該區油勢具有明顯的「雙層」結構特徵，並建立了以靜水壓力為主的重力流系統和以差異壓實作用為主的壓實流系統的流體動力分佈模型；通過成藏動力學系統的劃分及事件分析，探討了該地區油氣聚集規律，最終指出了有利的含油氣遠景區。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中傳輸進行了理論分析，然後對兩種邊界條件下產生的漫反射、漫透射光脈沖強度和形狀隨各光學特性參數的變化情況進行了數值模擬，最後得到了混濁介質的光學特性參數與漫反射、透射脈沖強度與形狀的關系曲線。第三章對不同形狀和脈寬的脈沖光源入射到混濁介質中產生的漫反射、漫透射脈沖的強度和形狀進行了理論分析和數值模擬，並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、形狀與各光學特性參數的關系曲線，這對從分析脈沖形狀中提取介質的光學特性參數的信息有重要的意義。None but is the test spectrum abundant and controllable, it is possible to simulate the stresses environment needed for exposing weakness of the product. based on summarizing the present status of the vibration test and vibration environment simulation technology in the world, the topic of simulation of super - gaussian random vibration environment with controllable frequency spectrum and its applications in reliability enhancement testing is put forward. the main content and conclusions of the dissertation are as following : 1
本文在綜述國內外振動試驗技術和振動環境模擬技術的基礎上，引出「頻譜可控的超高斯隨機振動環境模擬技術及其在可靠性強化試驗中的應用」這一主題，並緊緊圍繞該主題開展了如下研究工作: 1 .全面分析了振動激勵的功率譜密度量級、幅值分佈、帶寬以及試件結構的固有頻率、阻尼比等因素對疲勞損傷累積的強化效應，提出振動強化試驗激勵信號應具備的重要特性:頻譜可控和超高斯，確立了本文的研究主題和方向。Simulator presented in this paper provides a direct interface for the test of shortwave communication system, which well represents various features of hf channel such as multi - path delay, rayleigh fading, doppler shift, doppler spread, gaussian noise and impulsive interference, etc. in order to realize the channel simulation for the intermediate frequency signal, we, inspired by the idea of soft - defined radio, bring forward a new design method that the channel simulator consists of several dsp chips
本文研製的模擬器提供介面直接對短波通信系統進行測試，能夠全面反映短波通道的多徑時延、瑞利衰落、多普勒頻移、多普勒擴展、高斯噪聲和脈沖干擾等特性。為了實現對中頻信號的通道模擬，開發出一個結合軟體無線電思想的由多個數字信號處理晶元構成的短波通道物理模擬器。In order to identify and predict the space distribution of fracture - sets and karst caves in carbonate layers, a seismic forward modeling algorithm and a prediction method are presented in this paper
摘要提出了有助於確定碳酸鹽巖裂縫帶和喀斯特溶洞系統空間分佈的地震正演模擬和預測方法。分享友人