閾級 的英文怎麼說

Due to the image exists the instances of spin and distortion, in order adopting part small template proceed matching in order to reduce thereof impacts by as possible, besides small template matching may decrease calculation quantity, and it is propitious to real time of matching. looking into be on the impact of illumination, chromatism, under cloak circumstance template size and quantity select versus matching rate. matching primitive chooses gray, gray information measure large and most easy to obtain, but it is rather effected by illumination condition and chromatism, maximum matching rate restricted to 70 %

瓷磚缺陷檢測採用待測圖像與標準圖像作差法，作差法對匹配精度要求較高，因此在匹配誤差存在的點進一步做了亞像素級的匹配;導彈目標識別，採用背景匹配的方法，統計背景移動距離指導目標的識別;叢林中移動目標識別，採用作差法找到目標區和背景區，分別採用不同的模板和閾值匹配，統計目標區匹配結果。

The paper introduce detailed the method to decide the threshold value, and set forth the method to test the believing interborough of division result in theory

本論文在研究區研究過程中詳細的介紹了危險度等級閾值確定的方法，並對檢驗區劃成果的置信區間作了理論上闡述。

Combining the basic laws of psychophysics and signal detection theory, we use two - alternative forced - choice ( 2afc ) to study the threshold change of human electric sense under different noise levels

在心理物理實驗中，結合心理物理學和信號檢測論的基本原理，採用了二間隔的強迫選擇法（ 2afc ）作為實驗方法，研究不同噪聲量級情況下人體電感覺閾值的變化。

Reference equivalent threshold sound pressure levels for pure tones and supra - aural earphones

壓耳式耳機純音基準等效閾聲壓級

In this thesis, we demonstrate the study of si - based light emitting materials and its importance in si - based photonics integration. we discussed mainly the gain, differential gain, threshold current of si - based quantum - dot laser and the dependence of threshold current on temperature from discrete energy level of three - dimension confined quantum - dot and state density distribution of 5 - function

本文闡述了si基光發射材料的研究進展及它在硅基光電子集成中的重要地位，從三維受限量子點的分立能級和函數狀的態密度分佈入手，著重討論了si基量子點激光器的增益、微分增益、閾值電流及閾值電流的溫度特性。

The ingaas / gaas strained quantum well lasers are able to work with extremely low threshold current density, high characteristic temperature and high cod limit, which make ld lasers achieve higher output power and longer ufe. therefore, ingaas / gaas strained quartum wellstructures can be used for the fabrication of high power semiconductor lasers

Ingaas / gaas應變量子阱激光器具有級低的閾值電流密度、較高的特性溫度和較高的光學災變損傷閾值，這使得激光器具有更高的輸出功率和更長的壽命。因此ingaas / gaas應變量子阱結構可以用於大功率半導體激光器的制備。

Acoustics - reference zero for the calibration of audiometric equipment - reference equivalent threshold sound pressure levels for pure tones and circumaural earphones

聲學.校正聽力設備的基準零級.純音和環繞耳機的基準等效閾聲壓級

Acoustics - reference zero for the calibration of audiometric equipment - part 8 : reference equivalent threshold sound pressure levels for pure tones and circumaural earphones

聲學.校正聽力設備的基準零級.第8部分:純音和環繞耳機的基準等效閾聲壓級

A lot of data of elevation in different places of the shallow water of n antong were obtained by fish - exploring machine and gps determining and tide cor recting. an image which reflects landforms of nantong was obtained by selecting f rom the many noaa images on different channels and in different phases. based on the image, grey scales corresponding to different places were obtained. by using c la ssifying liner regression technique, liner regression equations were established between the elevation and grey scale, and the threshold values of grey scales of the different elevations were determined. according to the threshold values, the a reas of the tidal zone above different elevations of the shallow water of nanton g were estimated

通過利用gps及漁探器實測，並進行潮位訂正，獲得南通淺海海域大量測點的高程資料；通過對多時相各通道noaa衛星照片進行篩選，挑選能反映淺海地貌的通道資料，從中讀取各測點相對應的灰度值，在此基礎上利用分級線性回歸，建立不同高程范圍內的高程、灰度線性回歸方程，確定不同高程的灰度閾值，從而測量出南通市淺海海域不同高程以上的潮間帶面積、分佈。

The principles of erasure codes used under binary erasure channels are summarized and erasure codes which belong to standard classes of rs codes are introduced with emphasis on cascaded low - density erasure codes with linear time encoding and erasure recover algorithms. thresholds of regular degree distributions are analyzed. it is shown that low - density erasure codes based on ( d, 2d ) - regular sequences of degree distribution are not close to optimal ( d 3 ). two pares of irregular degree distribution sequences are introduced and a pare of improved right regular sequences of low - density erasure codes are presented, it is testified that the new sequences are asymptotically quasi - optimal. in the meantime, simulations of cascaded low - density erasure codes based on a few types of special sequences of degree distribution available are given, together with performance analyses on these codes

闡述了應用於刪除通道下的糾刪碼基本原理，介紹了兩類標準的rs碼類糾刪碼，重點分析了具有線性時間編碼和恢復演算法的漸近好碼?級聯型低密度糾刪碼，分析了正則度分佈的閾值，對正則低密度校驗碼在刪除通道下的糾錯性能進行了模擬，從理論上證明了基於（ d ， 2d ） -正則度序列的低密度糾刪碼都不是漸近最優碼（ d 3 ） ，同時還分析了非正則低密度校驗碼的度序列設計，基於右邊正則序列提出了一種改進型右邊正則序列，證明了此序列為漸近擬最優的，對基於幾類現有典型度分佈序列的級聯型低密度糾刪碼進行了模擬模擬及性能分析； 3

The column - level similarity threshold is only available to columns that perform a fuzzy match

列級相似性閾值只適用於執行模糊匹配的列。

According to the guidline, two nd : yag lasers have been designed and set up, one is end - pumped by lower output power ld using a selfoc micro lens, and the other is end - pumped by high output power ld using a pair of lenses are designed, and the characteristics such as output power and power stabilization of both solid - state lasers are investigated. thirdly, when an empty liquid crystal cell is inserted in the cavity of the nd : yag laser pumped by high power ld, the laser can operates in single axial mode. finally, according to the relationship between the laser output power and the longnitudinal a ld - end - pumped nd : yag laser sensor for displacement measurement has been investigated theoretically and demonstrated experimently, the results indicate that when the mean radius of pumping inside the laser cavity is far less than that of the oscilating laser mode, the exponential of the output power is a gauss function of the longitudinal positon of focused spot of ld pumping beam, both the measurement range and the sensitivity are dependent on the incident pumping power, as the incident pumping power is increased, the measurement range is enlarged and the sensitivity is improve d

本文首先介紹了ld泵浦nd ： yag激光器的發展狀況、主要特性及其應用，從四能級速率方程出發，推導了ld泵浦nd ： yag激光器的閾值、輸出功率和斜效率的表達式，並簡述了激光器的工作原理、結構型式和倍頻方法；其次，以空間相關的速率方程為基礎，提出了ld端面泵浦nd ： yag激光器的設計方法，給出了一定泵浦耦合方式下，振蕩光模尺寸、最佳輸出耦合率、泵浦光模尺寸、泵浦光焦斑位置等參數的選取依據，以此為依據，設計了自聚焦透鏡耦合小功率ld泵浦nd ： yag激光器和透鏡組耦合高功率ld泵浦nd ： yag激光器，對激光器的輸出功率和功率穩定性等特性進行了實驗研究；再次，在帶尾纖輸出的高功率ld泵浦nd ： yag激光腔內插入一隻空液晶盒，觀察到了激光器以單縱模運轉；最後，根據泵浦光焦斑端面位置對激光輸出功率的影響規律，提出了ld端面泵浦nd ： yag激光位移傳感新方法，並進行了理論和實驗研究，研究結果表明：當激光晶體內泵浦光平均光斑半徑遠小於振西安理工大學碩士學位論文蕩光束腰半徑時，激光輸出功率的自然指數與泵浦光焦斑的縱向位置成高斯變化規律，測量范圍和靈敏度依賴于泵浦功率，隨著泵浦功率的增加，測量范圍擴大，靈敏度提高，當端面泵浦功率為7 . 24w （最大輸出功率為1 . 926w ）時，激光位移傳感器的測量范圍和靈敏度分別是13 . 045mm和0 . 148mw / pm 。

This thesis explains the necessity of the character recognition technology of the computer at first, describe the meaning in which the handwritten numeral discerns ; pretreatment technology of handwritten numeral recognition, including two value, line segmentation, word segmentation smooth, removing noising, standardization and thinning are discussed two value concretely discusses whole threshold value, some threshold value, dynamic threshold value and utilize space information to carry on threshold, which are several kinds of common method of choosing threshold value, especially utilize space information to carry on threshold value is describe in detail ; adopting to the foundation of thinning based on mathematics morphology, thinning algorithm of serials same and thinning algorithm of protecting shape are discussed ; afterwards, according to principle ' s diagram of the on - line character recognition, by analyzing the structure feature of the handwritten numeral, this thesis has proposed the online recognition te chnology of the free handwritten numeral based on the stroke feature and the online recognition technology of the free handwritten numeral based on the multistage classifying device. detail narrated noise removing, stroke characteristic definition and discernment, distance criterion of whole word match ; then under the foundation of handwritten numeral segmentation, off - line handwritten numeral recognition is researched. especially minimum distance classifying device, tree classifying device and adaptive resonance ( art ) network classifying device is discussed at the same time, believes degree analyses are introduced to integrate a lot of classifying devices ; at the end, the typical application of the handwritten numeral recognition was briefly narrated, its application in extensive data statistics, financial affairs, tax, finance and mail sorting have been explored

二值化時對整體閾值二值化、局部閾值二值化、動態閾值二值化和利用空間信息進行閾值選取幾種常用的閾值選取方法進行討論，特別對利用空間信息進行閾值選取進行了詳細論述；在對通過對基於數學形態學的細化的基礎上，討論序貫同倫形態細化演算法和保形的快速形態細化演算法；然後依據聯機字元識別原理框圖，分析了手寫數字的結構特點，提出了基於筆劃特徵的任意手寫數字在線識別技術和基於多級分類器任意手寫數字在線識別技術，對其中涉及的筆劃識別前的噪聲處理、筆劃間特徵量的定義及識別、整字匹配的距離準則進行了詳細敘述；繼而在對手寫數字的分割的基礎下對脫機手寫數字識別進行了研究，對基於最小距離分類器字元識別、基於樹分類器的字元識別、基於自適應共振（ art ）網路的字元識別分別進行了詳細討論，並引入置信度分析將多個分類器進行了混合集成；最後簡單闡述了手寫數字識別的典型應用，對其在大規模數據統計、財務、稅務、金融及郵件分揀中的應用進行了探索。

So this part is dealt with separately. dcpm method is employed to improve the quality of image coding with making full of the relativity of the wavelet coefficients. according to the different importance degree and vision character of the high frequency wavelet coefficients, different thresholds are applied to remove small coefficients ; then mannos module are applied to remove the visual redundancy ; in order to produce more zero - tree, horizontal and vertical wavelet coefficients are transformed accordingly to improve the compression ratio

對于小波變換后的小波系數的高頻部分，根據其分佈特性和人眼的視覺特性，採用視覺模型對零樹量化過程的閾值進行修正，有效地去除視覺冗餘；對各高頻子圖採用多級樹集合分割的零樹編碼方法，有效地利用系數編碼剩餘符號，進一步提高壓縮比。

When the total of intent locks, row locks and page locks on a specific table exceeds the escalation threshold, escalation occurs

當特定表上意向鎖、行鎖和頁鎖的總數超出升級閾值時，就會進行升級。

Acoustics - reference equivalent threshold sound pressure levels for pure tones and insert earphones

聲學插入式耳機純音基準等效閾聲壓級

It was found that the simple triangular shape distribution would cause " two - peaked " energy distribution near the threshold energy, which must affect the group transfer matrix

閾能處三角形能譜分佈的近似描述，導致產生了群散射矩陣的「雙峰」現象，而閾能處矩形能譜分佈使平均次級中子能量（

The video signal processing circuit realizes the primary catching, filtering and signal amplifying. variable threshold binarization processing circuit and two - channel counter are designed to sample to count the output pulse signal, which is processed, deposited and displayed in microprocessor. the communication interface circuit with the computer is also designed

視頻信號處理電路完成了原始信號的初級捕捉、濾波、視頻放大等處理，設計了浮動閾值二值化處理電路，採用兩路計數器對輸出脈沖信號采樣計數，最後送入微處理器進行運算處理，可實現測量值的儲存、顯示等，並設計了與上位機的通訊介面。

We construct eigenfunctions from the linear combination of the b - spline functions and the truncated fourier series, and extend pseudospectral method to calculate above - threshold ionization electron spectrum of one - dimensional atom in intense laser fields. our results are also in very good agreement with those of split - operator method

本文還利用b樣條函數和傅立葉級數的線性組合構造原子未微擾的本徵函數，將偽譜方法推廣用來計算一維模型原子在強激光場中的閾上電離譜，其結果與分裂算符方法所得的結果也符合得很好。

The main work can be summed up as follows : firstly, we studied the thermal - field properties of vcsels, and analyzed the influences of current spreading, material parameters and operating conditions on the temperature distributions. secondly, we began with the electrode voltage and calculated the equipotential s distributions, compared the distributions of voltages and current densities in different depths of vcsels, and then studied the influences of the oxide - confining region with different position or thickness, and the different sizes of the gain - guided aperture and emitting window on the distributions of the injected current density, carrier concentration and temperature in the active region. thirdly, we realized the coupling of electricity, optical and thermal - fields, worked out the threshold voltage, calculated the distributions of the injected current density, carrier concentration and temperature under different offset voltages, and analyzed the impacts of temperature profile and carrier density on the refractive index, fermi levels and optical - field

具體工作可以概括如下：首先，研究了vcsel的熱場特性，分析了電流擴展，材料參數和工作條件對于溫度分佈的影響；其次，從電極電壓入手，計算出激光器中的等勢線分佈，並對不同深度處的電壓和電流分佈進行比較，研究了高阻區的不同位置和不同厚度、限制層和出射窗口半徑的大小對電流密度、載流子濃度和溫度分佈的影響；再次，實現了電、光、熱耦合，求出了閾值電壓，計算了不同偏置電壓下的電流密度分佈、載流子濃度分佈和熱場分佈，分析了溫度和載流子濃度變化對折射率、費米能級和光場的影響；最後，給出了考慮n - dbr和雙氧化限制層時激光器中的等勢線分佈，分析了n - dbr和雙氧化限制層對vcsel電流密度、載流子濃度、溫度和光場分佈的影響。