genetic feature 中文意思是什麼
genetic feature
解釋
成因特徵-
A genetic feature study in class, division 1 malocclusion
類1分類錯的遺傳特徵初探 -
To detect both known and unknown intrusion patterns, the system introduces a blended frame that makes use of both misuse detection approach and anomaly detection approach. the one of the highlight of the architecture is introduction of data mining technique, and the other is introduction of genetic algorithms. the ids uses data mining algorithms to abstract key features of system runtime status from security audit data, and it uses genetic algorithm to select the feature subset to reduce the amount of data that must be obtained from running processes and classified
本文陳述了所研究系統的主要特點和技術：將智能體（ agent ）技術應用於入侵檢測系統，解決了傳統入侵檢測系統的集中式解決方案的弊病，充分利用網路資源協同完成入侵檢測任務；利用基於主機和基於網路的數據源，形成一種完整的混合型的結構，從而能收集到更加全面的信息；使用了異常檢測技術和誤用檢測技術，採用一種混合型的結構，既能檢測已知的攻擊模式，又能發現新的攻擊模式。 -
Application of genetic algorithm in data mining has been studied. based on gene hypothesis gene dynamic sort method has been brought forward. its feature is component of genes can become longer and better gene component and because of dynamic sort, good gene component can be kept effectively
在分類規則提取系統中，為了更好地提高演算法的尋優和保優能力，提出了基因動態排序方法，即把各基因位按重要性大小進行排序，在此基礎上再進行交叉操作。 -
Bccs usually arise in elderly light - skinned people as sporadic tumors, but are also a major feature of the nevoid basal cell carcinoma syndrome, an unusual genetic disorder characterized primarily by cancer susceptibility and some embryonic abnormalities
這種癌癥在淺膚色的年長者中，常以散發性腫瘤表現出來，它也是痣樣基底細胞瘤綜合病徵的主要徵狀，痣樣基底細胞瘤是一種特別的遺傳疾病，主要以癌癥易感性及胚胎異常為特徵。 -
A standard genetic analysis used to determine evolutionary lineages shows that they have kept something else long hidden : winged species evolved from wingless ancestors, whose own ancestors were winged. “ to our knowledge, this is the first example of a complex feature being lost and later recovered in an evolutionary lineage, ” write michael f
一項用於決定演化譜系的標準基因分析法證實，竹節蟲還保有其他隱藏已久的秘密：有翅竹節蟲是由無翅竹節蟲演化而來的，而無翅竹節蟲的祖先原本就有翅膀。 -
On the other hand the information cryptogram technology and card identification of 1c appl ication system are also introduced. a novel fingerprint image preprocessing method is studied based on the trend of fingerprint veins, and some feature extraction and fingerprint matching methods based on fingerprint minutia based on a novel multi - fitness genetic algorithm ( mfga ) are also studied
在分析了國內外指紋識別理論研究的基礎上，研究了一種基於指紋紋線趨勢的指紋圖象預處理方法並取得了較好的模擬效果；研究了遺傳演算法在指紋模式匹配中的應用，針對遺傳演算法在模式匹配的局限性，提出了一種多適應度遺傳演算法（ mfga ） ，並在此基礎上對原遺傳匹配演算法做了進一步的改進。 -
Now the main methods for paper currency recognition have geometrical dimension measure, feature recognition of image texture and nn etc. nn which is nonlinear math mode is used widely in the application field of currency recognition incorporating with some optimizing arithmetic such as genetic algorithm and simulated anneal in order to optimize nn structure and improve nn recognition precision
主要研究內容包括人民幣圖像顯性特徵的提取，人民幣圖像中噪聲信息的抑制和顯性特徵的加強，識別系統中的數學模型的選取和建立以及優化既得的人民幣顯性特徵等方面。 -
Abstract : biological invasions are a continuous feature of a non - equilibrium world, ever more so as a result of accidental and deliberate introductions by mankind. while many of these introductions are apparently harmless, others have significant consequences for organisms native to the invaded range, and entire communities may be affected. here we provide a survey of common models of range expansion, and outline the consequences these models have for patterns in genetic diversity and population structure. we describe how patterns of genetic diversity at a range of markers can be used to infer invasion routes, and to reveal the roles of selection and drift in shaping population genetic patterns that accompany range expansion. we summarise a growing range of population genetic techniques that allow large changes in population size ( bottlenecks and population expansions ) to be inferred over a range of timescales. finally, we illustrate some of the approaches described using data for a suite of invasions by oak gallwasps ( hymenoptera, cynipidae, cynipini ) in europe. we show that over timescales ranging from 500 10000 years, allele frequency data for polymorphic allozymes reveal ( a ) a consistent loss of genetic diversity along invasion routes, confirming the role of glacial refugia as centres of genetic diversity over these timescales, and ( b ) that populations in the invaded range are more subdivided genetically than those in the native range of each species. this spatial variation in population structure may be the result of variation in the patchiness of resources exploited by gallwasps, particularly host oak plants
文摘:生物入侵是不均衡世界的一個永恆話題，尤其是當人類有意或無意地引入物種后.很多引入顯然是無害的，但另外一些則有著嚴重的後果，會給入侵地的生物以至於整個生物群落造成影響.本文總結了分佈區擴張的常見模式，概述了它們對遺傳多樣性和種群結構式樣所造成的影響.描述了如何根據以一批遺傳標記所得到的遺傳多樣性式樣來推斷入侵途徑，來揭示伴隨擴張選擇和漂變在形成種群遺傳樣式中的作用.本文對日益增多的群體遺傳學方法進行了總結，這些技術可以用來在不同的時間尺度上推斷種群規模所發生的巨大變化（瓶頸效應及種群擴張） .最後，我們以歐洲櫟癭蜂（膜翅目，癭蜂科，癭蜂族）一系列入侵的數據為例對一些方法進行了說明.從500 10000年的時間尺度上，多態的等位酶位點上等位基因頻率的數據表明: 1 ）遺傳多樣性沿入侵路線呈不斷下降的趨勢，支持了冰河期避難所作為遺傳多樣性中心的作用; 2 ）入侵地區的種群與該物種原產地的種群相比，遺傳上的分化更為強烈.這種種群結構在空間上的變異可能是被櫟癭蜂開發的資源尤其是櫟樹寄主在斑塊上出現變異的反映 -
The stress is basing coal - fired boiler inflammation system feature and control demand to design a kind of fuzzy - pi controller on based of genetic algorithm to control it. the controller refers the error and its variety rate as its inputs. and, in order to make the control qualities much better, concerns them as the performance index to optimize the membership function of the fuzzy variables and the pi ' s controller parameter by means of online adjujsting the genetic algorithm, inflammation system steam pressure loop and economic inflammation loop
重點是針對燃煤鍋爐燃燒系統的特點和控制要求，設計了一種基於遺傳演算法的模糊- pi復合控制器對其進行控制，該控制器以偏差、偏差變化率作為輸入量，通過遺傳演算法在線調整模糊控制器的模糊變量隸屬度函數和pi控制器的參數，從而達到優化模糊控制規則和pi控制器參數的目的，實現燃燒系統的蒸汽壓力迴路和經濟燃燒迴路的控制要求。 -
Genetic subtype and epidemiological feature of hiv - 1 circulating strains in fujian province
1流行毒株基因分型與流行特徵分析 -
At the same time, ga does n ' t have to know every feature of problem, so it can accomplish solution only by genetic procedure embodying evolving mechanism
同時，遺傳演算法具有不用了解問題本身的全部特徵的特點，僅僅通過體現進化機制的演化過程來完成對問題的求解。 -
Microcalcification feature selection in mammograms using genetic algorithm
使用遺傳演算法的乳腺微鈣化點特徵優化 -
Hisityl - trna synthetase catalyzes the aminoacylation of trnahis in the initial step of protein biosynthesis. the involumen of histidyl - trna synthetase in autoimmune diseases is another feature of the enzyme. in studies, it is reported that purified jo - 1 antigen can increase the detection rate of anti - jo - 1 antibody. but it is difficult to obtain a single component by biochemical extraction. genetic engineering can help us to desolve this problem. after looking up mrna sequence encoding histidyl - trna synthetase in genebank, we used rt - pcr technology to gain its full length dna sequence. the vestor ptybllwas used in the construction of expressing vestor. we transformed the jo - 1 gene into er2566 and used this system to express fusion jo - 1 antigen
本實驗從人胎盤中提取總rna ，利用rt - pcr技術獲得了編碼jo - 1的基因整長序列，選用impact - cn系統中的ptyb11載體，構建了jo - 1基因的克隆與表達載體，並轉化大腸桿菌er2566 ，經過抗性篩選、分子量大小比較、雙酶切鑒定、和pcr鑒定等多種方法驗證，篩選出了5個陽性克隆。 -
Abstract : an identification model of taste signals is developed based on fuzzy neural networks. the data compression and feature extraction of the sampled taste signals obtained using taste sensors are implemented employing wavelet transformation. fuzzy neural networks are used to identify the taste signals. the training of network weights and the optimization of membership functions are conducted employing genetic algorithms. the data processing and fuzzy identification of mixed acid and sweet taste signals are realized. simulated experimental results show that it is feasible and effective to introduce fuzzy neural networks into the fuzzy identification of taste signals
文摘:文中提出了一種基於模糊神經網路方法的味覺信號識別模型，利用小波變換實現了對傳感器所採集的味覺信號進行數據壓縮及特徵抽取，以模糊神經網路作為味覺信號的識別工具，並利用遺傳演算法訓練網路權值、優化隸屬度函數.文中實現了對酸、甜復合味覺信號的數據處理和模糊識別.實驗結果表明了將模糊神經網路引入到味覺信號模糊識別的可行性和有效性 -
( 2 ) the mechanism of pollination off. mollis. ( 3 ) e. mollis is a long - lived species, ( 4 ) a feature of the flora in the southwest of shanxi is its antiquity associated with prolonged geographical stability and no obvious extinction episodes caused by recent glaciations. genetic divergence over all populations was very low ( fst = 0. 019 )
翅果油樹有較高的遺傳多樣性，主要原因可能是（ ? ）由翅果油樹種群的分佈格局所決定； （ ? ）翅果油樹是一種長壽命的植物； （ ? ）翅果油樹所生存的地質環境較為穩定； （ ? ）由翅果油樹的授粉機制所決定。 -
On single color, it provides image2 - d minimum cross entropy based on genetic algorithm. on multi - color, it provides distill color - feature and morphologic segmentation technique. these segmentations all get good effect to make preparation for the following recognition. thirdly, this paper gives feature extraction means
另外，還研究了對背景固定的灰度視頻流及彩色視頻流的運動目標進行了檢測分割，這些分割方法均取得了不錯的效果，為目標識別作好了準備。 -
In this thesis a vision model consist of cellular neural network as feature detector and bp network as classifier is proposed, and experiments are described where genetic algorithm is used to evolve an optimal feature detector in order to aid a classifier to generalize across different conditions. application of cellular neural network to image filtering is also studied
論文研究了虛擬生物的視覺建模問題，用細胞神經網路cnn來進行視網膜圖象特徵提取，通過遺傳演算法進化cnn模板，實現特徵提取的優化，從而提高了分類器的泛化能力和識別效果，為生成基於視覺的自適應行為提出了一個新的方法。 -
Mail digital information feature space dimension is very huge. in order to reduce the feature dimension and caused the machine learning algorithm to be feasible, it has utilized feature selection algorithm based on the feature selection measure function. and on the foundation it has researched and designed the feature selection algorithm which combines the genetic algorithms and the feature selection measure function
郵件數字信息特徵空間維數巨大，為了降低特徵維數，使機器學習演算法可行，運用了基於特徵選擇度量函數的特徵選擇演算法，在此基礎上提出了基於遺傳演算法和特徵選擇度量函數相結合的特徵選擇演算法。 -
This paper takes the high spacial - differentiating remote sensing image material as research objects, studies and realizes four feature - oriented image segmentation methods : orient phase method, fuzzy threshold with genetic algorithms method, gaussian markov random field model texture segmentation method and moment feature - based texture segmentation, analyses their fundamental theories, their merits and drawbacks in detail, and validates them by some experiments
本文以高空間解析度的遙感資料為對象，研究和實現了四種面向特徵的圖像分割演算法：方向相位法、結合遺傳演算法思想的模糊閾值分割方法、基於高斯馬爾科夫隨機場模型的紋理圖像分割方法和基於矩特徵的紋理圖像分割方法，詳細分析了它們的原理和各自的優缺點，並用具體實驗進行了驗證。 -
Mathematics model of feature combination classification is regarded as fitness function, optimal selection of original flaw feature is realized with feature selection strategy based on genetic algorithm
以特徵組合分類能力數學模型為適應度函數，設計了基於遺傳演算法的特徵選擇策略，實現了對缺陷原始特徵量的優化選擇。
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