density detection 中文意思是什麼

density detection 解釋
密度檢測
  • density : n. 1. 稠密；濃厚。2. 【物理學】濃度；密度；比重。3. 愚鈍，昏庸。
  • detection : n. 1. 探知；發現，發覺；敗露。2. 【化學】檢定，檢查；【電訊】檢波。
  1. Abstract : based on the analysis of the mathematics models of saturation steam density and superheat steam density the paper states that the deviation of the detection on temperature highly affects the accuracy of intelligent flow totalizer. especially for saturation steam ， the accuracy of the temperature detection circuit shall be designed higher than the accuracy of the instrument. thus a temperature detection circuit based on ratio method with high accuracy is introduced

    文摘:在分析飽和蒸汽和過熱蒸汽密度的數學模型的基礎上指出，溫度檢測的偏差對智能流量積算儀的精度影響極大，尤其是飽和蒸汽，測溫電路的精度應設計為遠高於儀表的精度，同時引入一種基於比率法的高精度測溫電路。
  2. 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。
  3. Deviation in the immobilized antibody density is relatively high even with a minute change in experimental conditions, and the amount of detection antibody can be accurately controlled by transferring a metered volume ( 8 )

    盡管在實驗條件下只有很小改變，固定抗體的濃度偏差也會相對較高，而檢測抗體的量就能通過移取量好的體積來精確控制。
  4. A monte carlo algorithm was presented to model the relation between the scattering phenomenon, depolarization changes and sea water depth, it is discovered that the radius of scattering point and the degree of depolarization increase with increasing of the sea water depth. at last, a optical engineering software ( lighttools ) is introduced to simulate optical scattering in the deep sea water, and studys the corelation between scattering and relative refractive index, particle density and particle size in the sea water. the experiment results show that the intensity of scattering will increase evidently with the increasing of particle size, particle density and relative refractive index. the methods and results in the article provide the basic theory and experiment validation for improving performance of communication, detection and imaging under sea water

    本文以球形粒子的mie散射理論、 stokes矢量法以及mueller矩陣來研究海水的散射特性和散射中的退偏振度變化;通過montecarlo方法模擬藍綠激光在海水傳輸過程中的散射現象以及散射中的退偏度變化與海水深度的關系，發現隨著海水深度的增加，散射后的光斑半徑、退偏振度將逐漸增大。最後通過光學工程軟體（ lighttools ）對海水中的散射進行模擬實驗，研究散射與海水中粒子密度、粒子大小和相對折射率的關系。實驗結果表明，隨著粒子半徑、粒子密度和相對折射率的增加，散射的強度將顯著增加。
  5. Abstract : it is essential to research radar clutter with non - gaussian spectrum and non - r ayleigh distribution in modern radar design. based on spherically invariant rando m process ( sirp ), this paper applies a new algorithm to model the clutter with k d istribution in amplitude and any power density spectrum. at last it is proved tha t thi s method is correct and applicable with real simulative clutter and statistical detection result

    文摘:研究並模擬具有非瑞利幅度分佈和非高斯功率譜的雷達雜波是現代雷達信號處理中的一個重要的研究課題.文中基於球不變隨機過程（ sirp ）的建模方法，針對實地採集的幅度滿足k分佈並具有有理功率譜的高解析度雷達雜波，運用現代譜估計演算法對其進行建模和模擬，並以模擬雜波與實際雜波的數據對比和統計檢驗的結果對該方法進行了驗證
  6. Furthermore, the growth and the study of self - organized quantum dots structures become more and more important recently, and the application of self - organization technique become wider and wider in this thesis, we address the theory of film growth and the growth technique firstly more, the ways and characteristics of surface detection are prescribed we mainly report the growth process, results and discuss of self - organized quantum dots structures in the a12o3 substrates by s - k mode using ecr - mocvd, in the espd - u device the growth art of ain epilayer which is the preliminary foundation of self - organized gan / ain quantum dots structures, including the substrate cleaning, nitridation, the growth of buffer and the growth of gan and ain epilayer, is discussed we deliberately compare the test result of rheed xrd and afm and achieved the optimalized condition of ain at last we have successfully realized the growth of ain which is much smooth and better crystal quality moreover, we grow the self - organized gan / ain quantum dots structure in s - k mode because the limits of the heater temperature, we can not grow the atom - smooth epilayer of ain until now so we could not grow better quantum dots which have small diameter and big density but the self - organized quantum dots structures with better quality will be realized successfully if the substrate temperature is increased the thesis study belong to my tutor subject of national nature science foundation ( 69976008 )

    本論文主要論述了在espd - u裝置上，採用電子迴旋共振等離子體增強mocvd （ ecr - pamocvd ）方法，在藍寶石襯底上通過s - k模式自組裝生長gan aln量子點結構的生長工藝、結果及討論。而重點分析了自組裝生長量子點之前的aln外延層生長工藝，包括襯底清洗、氮化、緩沖層的生長和gan 、 aln外延層的生長；通過高能電子衍射、 x射線衍射和原子力顯微鏡測試，並且對這些測試結果進行了詳細的比較研究，得出了較優化的工藝條件，生長出了晶質較好、表面較平整的aln外延層；進而採用s - k模式自組裝生長了gan aln量子點結構。由於實驗裝置加熱爐溫度的限制，我們沒有能夠生長出原子級平滑的aln外延層表面，因而沒能夠生長出密度比較大和直徑比較小的量子點。
  7. Detection of arch rib concrete density of a concrete - filled steel pipe arch bridge

    鋼管混凝土拱橋拱肋混凝土密實性檢測
  8. Simultatly, based on the vaviaction of seismic signal - noise ratio, the anthor use the funtion singular method in the seismic data procesy and put forward the wavelet amplitude singular exponentid method and the wavelet power spectrum singular exponential for the fractued density detection

    與此同時，將函數奇異性分析的思想引到地震信號處理中來，針對地震信號信噪比的高低，提出小波振幅奇異性指數法和小波功率譜奇異性指數法的裂縫密度檢測方法。
  9. Also, in our software, we have made the practical seismic data processing by the prediction of fractured amizuth and the fractured density, then evaluated the exactitude of the predictions by the evaluation of the assessment parauceter, and at last confirm one optimum detection methods of fractured amizuth, the wavelet difference scale filter method, and two the optimmer fractured density detection method, the wavelet amplititude singular exponential method and the wavelet power spectrum singular exponeatial method

    並用自編軟體，將三種裂縫方位預測和三種裂縫密度預測用於實際地震資料處理，並用評價參數檢驗評估其正確性，最終在現有的方法中確定了最優裂縫方位檢測方法?小波變尺度濾波法和最優裂縫密度檢測法?小波振幅奇異性指數法和小波功率譜奇異性指數法。
  10. The above - mentioned research results will supply valuable foundation of theory and experiment for ultrasonic detection of small inclusions and hardening particles density

    論文的上述研究成果，對于進一步開展ly12鋁合金細小夾雜物及強化粒子密度的超聲檢測提供了重要的理論及實驗依據。
  11. Making use of the predominance of the computer system, this paper makes an improvement on the method for density detection on the aerophotographic negative, then presents and implements a density detection system of aerophotographic negative

    摘要利用了計算機系統的優勢，改進了航空攝影負片的密度檢測方法，實現了航空攝影負片密度檢測系統，實驗證明了該系統的可行性和實用性。
  12. Moisture, the voids and the density of the pavement are expected for many operators in the road department. in order to promote the application of gpr to detect pavement quality as quickly as possible, in this paper some research works were zone. the mainly research results includes the following aspects : ( 1 ) since the dielectric constants of pavement medium have important influence on radar detection results, dielectric properties of pavement layers materials are analyzed for the design of practical gpr system and field application

    目前探地雷達在公路上的應用還主要局限於路面結構層厚度的檢測，對路基路面物理力學指標的無損檢測被廣大公路工作者寄予厚望，這一技術的應用還有很多的工作要做，為了使其早日應用於實際，實現探地雷達對路面含水量、空隙率和壓實度的快速無損檢測，本文具體做了以下的一些工作： （ 1 ）鑒于介電常數對探地雷達檢測的重要影響，對路面結構材料的介電特性進行深入分析，為路用探地雷達的實際應用測量提供理論依據。
  13. S. h. chang, and fu - tai wang, 2003, “ multipath detection in underwater using the robust discrete wavelet transform and recursive density estimation ”, proceedings of the fifth conference on undersea technology ( cust 2003 ), pp. 255 - 258

    張順雄、陳建堯、何升運、李信龍， 2003 ， 「準正交序列於水下展頻通訊之應用」 ，第五屆水下技術研討會暨國科會成果發表會，第31 - 36頁。
  14. In this paper, first discussed are the corresponding results in highway and dam constructions and the engineering characters of rock - fills are deeply analyzed, especially the relationships between gradation, strength and maximum dry density, long - term stability of fillers including earth - fillers and rock - fillers and some conclusions of use are drawn. by in - situ tests and researches on compacting mechanism of high - filled rock embankments, effecting factors on compaction, construction technology and shock compacting technology, obtained in this paper are the compacting technology of high - filled rock embankment and the optimal parameters of rolling compaction. by deeply research on the theory and methods of quality control of high - filled embankment, settled are the questions as quality detection method and control standard of high - filled rock embankment

    本文首先總結和分析了國內外公路和壩工行業已有的相關成果，深入探討了填石料的工程性質與最大幹密度、長期穩定性等之間的關系，得到了一些有益的結論；通過現場試驗路堤的試驗和對高填石路堤壓實機理、填石路堤壓實效果影響因素、施工工藝和沖擊壓實技術等研究，解決高填石路堤壓實工藝和最優碾壓參數控制等技術問題；通過深入研究填石路堤壓實質量控制原理和方法，解決高填石路堤壓實質量檢測方法和控制標準技術難題；解決高填石路堤沉降觀測技術問題，並根據沉降觀測結果研究高填石路堤地基和路堤沉降變化規律，得到了能預測沉降變化規律的「龔帕斯」成長曲線預測模型；根據工程實際，深入研究了邊坡穩定性的影響因素，得到了有益的結論。
  15. Therefore the dynamical characteristic is acted as detected parameter for fractured detection ( primary amplitude secondary frequence ). and the amplitude of mean sguare and central frequence are acted as evaluational parameter, based on the those studies, the new ideas is put forward that fractured azimuth is dected by lateral difference and fractured density is dected by vertical difference for three facters of fracture, wavelet acted as analysis tool and direction by wave field characteristic applied the multiple scale edge dectection and self - adaptive edge detection into the detection theory of seismic fractured azimuth, also put forward the wavelet different scale filter method of the fractured azimuth detection

    因而，確定了主要以振幅，其次是頻率的地震波動力學特徵作為裂縫檢測的被檢參數和均方振幅和中心頻率作為檢驗檢測結果正確與否的評價參數。在上述研究基礎上，針對裂縫的三要素，提出通過橫向求異檢測裂縫方位和縱向求異檢測裂縫密度的新思想。並以小波作為分析工具，以潛山波場特徵作指導，將數字圖像處理中的多尺度邊緣檢測和自適性邊緣檢測引用到地震裂縫方位檢測中來，並提出了小波變尺度濾波法新的裂縫方位檢測法。
  16. We are used to gain the detection efficiency by making the standard samples, because of the different source of the environment samples, the component and density and volume of the samples ca n ' t entirely match those of the standard samples, so it is very difficult to make the standard samples, thereby, in order to conquered experiment difficulty, this article has calculated the detection efficiency of hpge - spectrometer by existing monte carlo code

    但由於待測環境樣品的來源不同，其介質成份、密度和體積量可能相差很大，實驗上又難以製作各種各樣的標準樣品，採用蒙特卡羅方法可以比較容易地解決這些問題，對此，我們採用蒙特卡羅方法，研究了高純鍺譜儀對不同環境樣品的探測效率，解決了實驗上製作各種標準樣品的難題。
  17. Probability density function method for studying reconstructed attractor and detection of ventricular tachycardia and fibrillation

    概率密度函數法研究重構吸引子並檢測心動過速和心室纖顫
  18. Normal behavior and anomaly are distinguished on the basis of observed datum such as network flows and audit records of host. when a training sample set is unlabelled and unbalanced, attack detection is treated as outlier detection or density estimation of samples and one - class svm of hypersphere can be utilized to solve it. when a training sample set is labelled and unbalanced so that the class with small size will reach a much high error rate of classification, a weighted svm algorithm, i

    針對訓練樣本是未標定的不均衡數據集的情況，把攻擊檢測問題視為一個孤立點發現或樣本密度估計問題，採用了超球面上的one - classsvm演算法來處理這類問題;針對有標定的不均衡數據集對于數目較少的那類樣本分類錯誤率較高的情況，引入了加權svm演算法-雙v - svm演算法來進行異常檢測;進一步，基於1998darpa入侵檢測評估數據源，把兩分類svm演算法推廣至多分類svm演算法，並做了多分類svm演算法性能比較實驗。
  19. ( 3 ) we can detection the azimuth of crack growth by abnormal amplitude or the discrepancy of wave - speed. ( 4 ) we can guess whether crack contains fluids by the change of p - wave speed. second, using pore model, under press and temperature, we have studied the influences of pore density on the characteristic parameters of seismic wave

    第一、利用人工裂縫模型，研究了裂縫密度、方位和張開度的變化對地震波屬性參數的影響，根據實驗結果，總結出：可利用橫波分裂的不同程度來檢測裂縫密度的高低；可利用縱橫波的振幅、主頻、衰減（或品質因子q ）和主振幅的變化來檢測裂縫張開度的變化；可利用速度的差異和振幅異常來檢測裂縫發育的方向；可利用縱波速度的變化來推測裂縫中是否含流體。
  20. The physical properties were measured using x ray diffraction analyzing, sem observing, fracture toughness and fracture strength measuring, micro - hardening and density detection etc. the results display that the relative densities are above 98 % for all the samples, especially reaches 99. 8 % for the sample added 2vol % sic nano - particles

    在sic加入量為2vol %時，由於分散比較均勻，對樣品燒結性能影響不大，相對密度可達99 . 8 % 。在未加sic時，四方zro2的含量最高為50 . 5vol % 。隨sic加入量的增加，四方相zro2的含量呈下降趨勢。
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