vector pattern 中文意思是什麼
vector pattern
解釋
矢量圖型-
Abstract : in this paper ， a ray - optics analysis is performed to investigate the asymmetry of dual beam scanning field produced by a rotating polygon. some basic equations of dual beam scan are derived ， such as ， the position vector for the incident point ， the scalar expression for reflected ray ， scan pattern on observation plane ect. the far - field asymmetry of the scanning field has been discussed
文摘:應用幾何光學理論研究了多光束轉鏡掃描場的非對稱性，導出多光束掃描入射點位置矢量、反射線標量表達式、觀察面上的掃描軌跡方程，並研究了掃描遠場的非對稱性。 -
The modified zndx in comparison with others is well indicative of the severity and extent of flood / drought event and of more objective classification of them, which is therefore quite applicable to a extended area. ( 3 ) the main anomaly structures of grades of drought / food in summer over northwest china present pluvial pattern and dry pattern in all the areas, and spatial changes are opposite pattern from the noth to the south and the west to the east. the first four rotated loading vector fields represent four principal precipitation anomaly areas : the weishui river basin, east of the qinghai - xizang plateau
但修訂過的zndx指數根據氣溫、土壤濕度及前期氣候濕潤度等因子能夠客觀的反映出西北地區的旱澇特徵。 （ 3 ）西北地區季與年區域旱澇等級表明：西北地區的乾旱雨澇有顯著的階段性和年際變化特徵。 1980 』 s到1990 』 s中期，氣候較濕潤，土壤濕度增墑較明顯； 1990 』 s中期以後是40年乾旱最異常的時段； 1960 』 s旱澇交替發生，旱澇趨勢接近常年； 1970 』 s氣候雖乾旱，但沒有1990 』 s中後期顯著。 -
The vector - based plane - wave spectrum method ( vpws ) is improved, which can directly obtain the far field diffractive pattern depending on the output near field data in the bor fdtd meshes by use of the deduced formulas in this dissertation
改進了平面波譜傳播演算法（ vpws ） ，推導出的公式可以由borfdtd計算空間內的近場輸出數據直接計算出遠場的電磁場分佈。 -
In this paper, based on understanding and mastering image processing, we input the drawing into the computer by the image conversion, then automatically get and recognize the element by the method of the image processing and pattern recognition. at last, on the base of the understanding of the whole drawing, we will transform the information of the picture and the character to the vector format, on which we can make the vivid courseware
本文在理解和掌握圖像處理主要技術基礎之上，主要討論通過圖像轉換裝置將圖紙輸入到計算機，運用圖像處理、模式識別等理論和方法進行圖像中各種要素的自動提取識別，在實現對整幅圖紙理解的基礎上，自動將圖紙和符號信息轉換為矢量數據格式。 -
Numerical simulations were done to show the distortion of the wavefront and the interference pattern under several kinds of typical plasma density distributions. the ray path in plasma was calculated by the numerical solution of the vector equation of light ray, when the plasma density was closing to the critical electron density of the laser frequency. through the simulations, the factors that influence the measurement were found out under different density distributions and shapes of plasma
在此基礎上，採用數值模擬的方法，計算了在幾種典型的等離子體密度分佈下，激光波面的變化和產生的干涉圖樣；並用光線矢量微分方程的數值解法計算了當等離子體密度接近光頻臨界電子密度時，光線在等離子體中的傳播路徑，從中掌握了在不同的等離子體密度和形狀下，進行干涉測量所應估計到的因素。 -
The 3 - d vector and pattern of electromagnetic field and power density on a sphere from an array of time harmonic current
弦變線電流陣列在球面上電磁場及功率密度流之時變向量與三維場形。 -
It also analyses two patterns of gis case storage, by grid and vector, finally gives management content of gis case, key technology, workflow of two patterns and the contract between grid pattern and vector pattern
論文分析了gis案例存儲管理的兩種模式? ?柵格模式與矢量模式，並對這兩種模式進行了深入地探討，歸納出了gis案例存儲管理的內容、關鍵技術以及這兩種模式的管理流程，並對這兩種管理模式的優缺點進行了對比。 -
In these two methods a vector pattern is firstly partitioned into a set of sub - patterns, i. e. each sub - pattern in this set is only a part of the original vector pattern. after the partition, traditional pca & flda are used on these sub - pattern sets for sub - feature extraction
它首先將模式數據適當的分成若干個獨立的子模式，然後分別對其子模式集使用pca和flda方法進行特徵的提取，最後將所有獲得的子特徵作為模式的最後特徵並用於分類。 -
Secondly, a multilayered neural network trained with a learning vector quantization ( lvq ) algorithm is applied to pattern recognition of manifestations of the pulse and the classification ability of lvq network is compared with traditional near neighbor algorithm
其次，本文根據脈圖的時域特徵，採用學習矢量量化演算法，訓練文中確立的神經網路分類器，用以實現對脈圖的識別。並比較了lvq神經網路分類器與傳統近鄰法的分類性能。 -
The expression conditions of e2 gene in p. pastoris were optimized, the results indicated that the peak obtained after 72 hours ; pattern of inhibition / induction could improve expression level ; the best ph value were between 7. 5 and 8. 0 and the optimized methanol - induced concentration was 2 % - 3 % the e2 genes of the prevalent strain ( guangxi yulin strain ) and c strain derived from rabbit spleen tissue were amplified and cloned into e. coli the expression vector pproex - htb respectively, the recombinant plasmids pproex - gxyl and pproex - c were obtained and then were transformed into the dh5a e. coli competent bacteria respectively, the recombinant bacteria could express the major antigen region of e2 gene, the expression yields amount to 35 % and 38 % repectively
豬瘟病毒ez基因的原核表達： pcr擴增出當前豬瘟流行野毒株，中國豬瘟兔化弱毒（ c株）兔脾組織毒ez基因的主要抗原區，將其克隆到原核大腸桿菌表達載體pproex htb中誘導表達，經sds page檢測表明，重組質粒能表達ez基因主要區蛋白， westernblot檢測表明，誘導表達蛋白與豬瘟陽性血清發生特異性反應，表達量為35和38 ，可用於基因工程診斷抗原。 -
2. study the working principle of the vector transducer, mainly for two - dimensional pressure - gradient transducer. and the experimental results for directional pattern of two - dimensional pressure - gradient vector transducer at frequency 3khz and 5khz are given
重點對本文所要研究的壓差式矢量水聽器進行研究，並運用消聲水池實測數據繪出了二維壓差式矢量水聽器在3khz和5khz下的指向性圖。 -
The parameters of support vector machine was optimized by using particle swarm optimization, then the pattern recognition model of identifying standard components of ions of groundwater was constructed
摘要採用粒子群演算法優化支持向量機參數，建立了地下水化學特徵組分識別的粒子群支持向量機模型。 -
The operating object of all these linear classifiers is vector pattern, i. e., before applying them, any non - vector pattern should be firstly vectorized into a vector pattern
然而現有的線性分類器幾乎都是針對向量模式的，即所有的模式都採用向量表示，要應用於矩陣表示的模式，必須首先將矩陣模式轉換成向量模式。 -
Pca & flda ), knowledge - based methods and neural - networks based methods, etc. in this thesis two novel classes of feature extraction methods are proposed, i. e. matrix - pattern - based and vector subpattern - based representation methods respectively
在本文中，我們在pca和flda方法的基礎上提出了兩類特徵提取新方法，即基於矩陣模式和基於子向量的特徵提取方法，並隨後用于模式的分類。 -
This type of strategy has two main shortcomings : 1 ) useful information for classification task contained in the matrix structure may be jeopardized in the vectorizing procedure ; 2 ) after vectorizing procedure computation complexity in classification task may increase substantially due to the vector pattern representation
這種方法存在著兩個主要的缺點： 1 ）矩陣模式中對分類有用的結構信息很可能會因為向量化的操作而遭到破壞； 2 ）向量化的操作極大的增加了特徵提取及隨后識別的運算復雜度。 -
After extracting characteristic vector, unqualified glass container can be identified by using statistic pattern recognition method
提取特徵矢量后，通過統計模式識別原理即可以分類識別。 -
Our proposed methods, matpca & matflda, can deal with not only the vector pattern, but also matrix pattern
我們提出的基於矩陣表示模式的特徵提取方法（ matpca和matflda ） ，不僅能直接處理向量表示的模式更能處理矩陣表示的模式，因此避免了上述問題。 -
In addition, a vector pattern can be recombined into a matrix pattern using some matrixization technique and then be processed by matpca & matflda
另外對于向量表示的模式，我們通過矩陣化重組將其轉化成矩陣表示的形式，然後使用matpca和matflda方法進行特徵提取。 -
In above mentioned matpca & matflda, a vector pattern is firstly reshaped into a matrix pattern and then processed by pca & flda. it follows a first - matrixization - then - extraction path
前面提到的matpca和matflda是將向量表示的模式轉換成矩陣表示的模式后再分別進行pca和flda的方法，它具有先組合后提取的過程。 -
But, such a vectorization will bring at least three potential problems : 1 ) structural or local contextual infor mation may be broken down ; 2 ) the higher the dimension of input pattern, the more me mory space are needed for the weight vector related to a classifier ; 3 ) when the dimension of a vector pattern is very high and while the sample size is small, it is easy to be overtrained
如此轉換至少會帶來三個不足: 1 ）空間或結構信息可能會遭到破壞; 2 ）由於權向量的維數等於輸入模式的維數，當輸入模式維數很大時，權值的存儲空間相應的會很大; 3 ）對于大維數的向量模式，當樣本數不多的時候，利用線性分類器易導致過擬合。
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