sample extraction 中文意思是什麼

sample extraction 解釋
樣本提取
  • sample : n 1 樣品，貨樣。2 標本；榜樣，實例。3 【統計】典型取樣，抽檢查。4 【電訊】信號瞬時值。5 【冶金】 ...
  • extraction : n. 1. 抽出，拔出。2. 【化學】提取（法）；萃取（法）；回收物，提出物；精煉。3. 精選，摘要。4. 血統，家世，出身。5. 【數學】開方，求根。
  1. The process of feature extraction is to transform the eradiate noise signal to different feature space and extract the feature vectors that reflect the category of the input sample. the extracted features are the input modes to the classifier

    特徵提取的過程是把輸入的船舶輻射噪聲信號變換到不同的特徵空間，提取出反映樣本的類別特性的特徵向量，並把其作為分類器的輸入模式。
  2. Firstly the patterns of the multifingered hands are detailed, eight patterns are defined. the classical bayes method is used in the classification of pre - grasp of multiple fingers based on three patterns which are grasping, holding and pinching. based on the eight pre - grasp patterns, bp neural network is applied in the classification of the pre - grasp of multifingered hands and gets a good effect. the method solves the shortcoming input sample relying on the propobility density and simplified the un - insititution characters extraction. in this paper, support vector machine ( svm ) and binary - tree with clustering is applied in the classification. this method can solve the slow speed and effect with fewness sample in the classification, achieving a good effect. in this papper, we extract the characters of the regulation object with geometry characters and extact the unregulation object with the image analysis

    此法解決了輸入樣本依賴物體的概率密度的特點，簡化了分類特徵提取的不直觀性。本文還採用了支持向量機（ svm ）和聚類二叉樹相結合的方法對機器人手預抓取八類模式進行分類，解決了預抓取模式分類訓練速度過慢以及在分類中樣本數量偏少而影響分類效果的問題，得到了較高的正確率。本文對預抓取幾何形狀規則的物體採用直接提取其幾何特徵，對于預抓取幾何形狀不規則的物體採用圖像分析的方法進行特徵提取。
  3. The disquisition includes choice of algorithm, accomplish of algorithm, collection of learning sample, parameter of net, shortcoming of bp algorithm, extraction and reduction form line etc. referring to shortcoming of traditional bp algorithm, a modified learning factor with adaptation is introduced. because of every different font has robust, the way based chain coded and knaggy feature is used. a bizarre sample feature database is constructed for speeding up modified bp learning and classification

    本文對人工神經網路理論進行了研究，探討了網路形式及演算法的選擇、演算法的實現、學習樣本的收集、網路參數選擇、 bp演算法缺陷、表格線提取、還原、生成及字元識別、還原生成等問題，並針對bp演算法的缺陷提出了和實現了改進型bp演算法，使網路學習效率提高，對不同人的不同字型字體有較強的魯棒性，採用了基於鏈碼特徵和凹凸分佈特徵的方法來抽取字元特徵。
  4. Spe ( solid phase extraction ) as a technique of sample pretreatment for aquatic environmental pollutants analysis is reviewed

    摘要固相萃取技術非常適用於環境水質中痕量有機污染物的監測分析。
  5. This review introduces the basic principle of molecular imprinting technique and summarizes its application in sample pretreatment including molecularly imprinted solid phase extraction, molecularly imprinted solid - phase microextraction and molecularly imprinted membrane separation technique

    本文介紹了分子印跡技術的基本原理，綜述了分子印跡技術在樣品前處理中應用的研究進展。
  6. Stir bar sorptive extraction ( sbse ), which was originally developed at the end of 1990s, is a kind of novel and solvent - free sample preparation technology with high sensitivity and reproducibility

    攪拌棒吸附萃取是九十年代末發展起來的一種新型的樣品前處理技術，具有靈敏度高、重現性好、不使用有機溶劑等優點。
  7. We did the same steps for three times, so we could get the extraction using the steps mentioned. laemmli sample buffer was added to the extracted protein, which were then boiled for 5 min. the protein samples were separated by 12 % sds - page and transferred to nitrocellulose membrane

    樣品蛋白經12 % sds一聚丙烯酞胺凝膠電泳分離后，轉印到硝酸纖維素膜上，與第一抗體4孵育過夜，經tbs洗滌后，再與第二抗體室溫孵育2小時， ttbs充分沖洗后，顯色觀察。
  8. Because the concentration of zirconium in uranium has large ranges, from 1. 50xlo ' 6 - 3. 8g / gu, not only how to decrease the remainder of uranium to eliminate its determinate effect but also how to acquire higher recovery of zirconium is considered, so the method of silica gel, the method of tbp levextrel resin chromatography, the method of tta chromatography and the method of tta extraction are compared. then tta extraction is chosen to acquire the ideal separation purpose. compared with icp - ms and icp - aes, xrf has characters of high repeatability, stability, low cost, high concentration elements analysis, the ability to determinate solid sample and having comprehensive practicability, but xrf has lower sensitivity, so how to increase the concentration of the sample to acquire better precision is a difficult problem, the optimum of operating condition : the integral time of spectral lines is 60s, the integral time of background lines is 20s, the voltage of xrf is 50kv, the electric current is 50ma

    由於鈾中鋯的含量范圍很廣，從1 . 50 10 ~ （ - 6 ） 3 . 8g / gu ，在分離和測量時，既要考慮盡量地減少鈾的殘留量以消除鈾對鋯測量產生的影響，又要獲得鋯的理想的回收率，因此本文在分離方法的選擇上比較了硅膠吸附分離法， cl - tbp萃取色層法， tta萃取色層法和tta萃取分離法的優缺點，認為tta萃取分離法可以達到理想的分離效果。
  9. To device a primer pairs and amplify the full length pstvd by rt - pcr, the positive rna extraction from tuber sample was used as template. the product of rt - pcr was purified and connected to the plasmid pmd 18 - t vector

    Cdna核酸斑點雜交反應（ nash ）檢測pstvd方法準確、靈敏度高，一次檢測樣品數量多，且對于異地樣品檢測非常方便，是以往其它檢測方法的有效補充。
  10. A review on the application of liquid membrane extraction for environmental sample preparation is presented

    摘要對液膜萃取技術在環境樣品前處理中的應用進行了綜述。
  11. The ultraviolet absorbance of the extraction liquid didn ' t relate to the sample weight or the extracted time

    化探樣萃取液的紫外吸光度與萃取時間及稱樣量關系不大。
  12. A project of authentication based on fingerprint feature data is studied : in this project, the first step is to sample the fingerprint of people and extraction its feature data through secugen hamster ( which is a kind of fingerprint sample device ), then embed the fingerprint feature data into the image ( both 256 gray - scale images and 24 bit color images ). during the identification course, match the fingerprint feature data sampling from the secugen hamster with that of picked

    研究了一種基於指紋特徵數據水印演算法的身份識別方案:結合secugen系列指紋儀，將採集的指紋圖像進行特徵提取，最後將指紋特徵信息嵌入到宿主圖像（ 256色或24位彩色圖像） 。在識別過程中，將採集的指紋信息和從圖像中提取的指紋特徵信息進行比對，如果比對成功，則可以確認其身份合法，否則，就是非法者。
  13. In addition, the concept of scene centriod is introduced to represent video scene by averaging of all key frames inside a group of shots in the given video scene, which makes an audacious attempt for high - level video unit extraction and representation ; 4 ) according to the given sample video, shot and scene - based video retrieval methods are discussed respectively, and the evaluation pricinples are also discussed

    進而，討論了由場景中一組鏡頭的關鍵幀的質心表示場景關鍵幀，即場景質心的方法，從而為抽取高層的視頻數據單元做出了大膽的嘗試； d ）從給定樣本視頻出發，分別討論了基於鏡頭和場景的視頻檢索方法，並分析了檢索性能評價的準則。
  14. After finished the cyclic voltammetry experiments, the results showed that iron steel grid can act as good current collector in the aqueous electrolyte. while the scan rate was fall in the range of 0. 5 - 4. 0mv / s, electrochemical reaction of the lithium insertion / extraction in the solid phase was kinetically limited by the diffusion of lithium ions. after 40 cycles in aqueous electrolyte the discharge capacities of sample of s13 reached 77mah / g, and showed good cycle performance

    在水溶液中不銹鋼網可以作為電極的集流體，在0 . 5 - 4 . 0mv / s的掃描速度范圍內，鋰離子在尖晶石鋰錳氧化物的嵌入和脫嵌的電化學反應在動力學上是受鋰離子在固相中的擴散所控制，充放電實驗顯示樣品s13在水電解液中經過40個循環后達到77mah / g的放電容量，具有很好的循環穩定性。
  15. Determination of cadimium in cucumber with four types of sample preparation methods, i. e. digestion using nitric acid and perchloric acid, microwave digestion using nitric acid, digestion using sulfuric acid and hydrogen peroxide and extraction using hydrochloric acid were compared

    摘要本文通過比較研究了濕式消解法、微波消解法、硫酸過氧化氫快速消解發、鹽酸浸提法等四種前處理方法測定黃瓜中鎘含量。
  16. For the first time this dissertation discusses the feasibility of data mining for the fields data of cfbb ， analyses the preprocessing technology of sample data ， introduces the application of clustering analysis ， and finally completes the rule extraction by applying knowledge - based artificial neural network. considering distributed parameters ， nonlinear ， and long time lag system of cfbb ， the theory of self - organizing neural fuzzy inference system is applied to the control system of cfbb ， and enables control rules extraction on - line. the models of data mining and self - organizing ( fbnc - pnn controller ) are programmed ， embedded to the control system of a 35 t / h cfbb in tsingtao ， and finally improve the performance of cfbb effectively

    本文還針對流化床鍋爐運行的非線性嚴重、大滯后、不確定性大等特點，研究了基於數據挖掘優化的模糊神經自組織控制策略在循環流化床控制系統中的應用，使規則獲取可以在線進行；並編制了數據挖掘模塊優化自組織控制模塊，應用到青島35t / h循環流化床鍋爐的控制系統中，提高了鍋爐的運行水平和效率，取得了良好的效果。
  17. Solid - phase extraction ( spe ) is an effective tool for the preconcentration of trace elements and their separation from various sample constituents

    固相萃取對于痕量元素的預濃縮和將元素從各種樣品中分離是一種有效的工具。
  18. According to the requirements to pd pattern auto - recognition, this paper studies systematically the basic theories and realizable methods for auto - recognition of pd gray intensity image : ( 1 ) in the requirement of on - line pd monitoring for transformer, several discharge models are designed and the relevant experiment methods projected. with discharge model tests, a lot of discharge sample data is acquired. on the base of systematical research on recognition for pd gray intensity image, this paper puts forward two kinds of fractal features, the 2nd generalized dimensions of original pd images and fractal dimensions of high gray intensity pd images, and then the relevant extraction methods

    針對局部放電模式自動識別的需要，作者系統地研究了局部放電灰度圖像自動識別中的基本理論和實現方法： （ 1 ）根據變壓器局部放電在線監測的要求，設計了放電模型和實驗方法，並通過模型實驗獲得了大量放電樣本數據，為構造局部放電灰度圖像和採用bpnn進行識別作好準備； （ 2 ）研究了局部放電灰度圖像的構造方法以及降維構造32 32灰度和矩陣的方法；在用人工神經網路對局部放電進行模式識別時，分析了bp網路的優缺點，對典型bp網路的結構和學習訓練演算法提出了改進，採用帶有偏差單元的遞歸神經網路作為模式分類器；採用32 32灰度和矩陣進行bpnn識別結果表明這種方法是有效的。
  19. Several extraction methods for organic pollutants analysis in water sample were introduced, and further discussion on their detection limit and sensitivity was also developed

    摘要綜述水中有機污染物富集與分離方法的原理、優缺點、適用條件，探討各種分析方法的檢測限和靈敏度。
  20. The pretreatment of food samples for determination of organochlorine pesticides residues were described in this article, including several new technology which development during recent years, for example : supercritical fluid extraction, accelerated solvent extraction and solid - phase microextraction, these methods have reduced the time and solvent needed for sample extraction

    摘要綜述了近十年來國內外對于食品中有機氯類農藥分析的前處理技術，其中包括了近幾年出現的一些新技術，如：超臨界流體萃取、加速溶劑萃取和固相微萃取等，這些新技術不但縮短了樣品的前處理時間並且減少了有機溶劑的用量。
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