linear reduction 中文意思是什麼
linear reduction
解釋
直線式減低-
Then this paper makes some overview and simulation on the application of three precoding algorithms under the flat fading channel, which are linear preequalization, tomlinson - harashima precoding ( thp ) and lattice reduction - aided ( lll ) vector precoding
本文對三種常見的預編碼演算法在平坦衰落通道下的應用進行了綜述和模擬研究，包括迫零線性預均衡、 thp預編碼和格約簡輔助矢量預編碼等演算法。 -
In this paper, taking the measured error sound velocity profile as the initial guess value, the sound beam travel times and beam angle recorded by the multi - beam system and the generalized linear inversion method are used to get a sound velocity profile close to the actual sound velocity profile, and the inversed sound velocity profiles have contributed to the reduction of sound velocity profile error
摘要以測得的誤差聲速剖面作為初始猜測值，利用多波束記錄到的波束傳播時間和波束角等信息，通過廣義線性反演得到一個與實際聲速剖面比較接近的聲速剖面，這有助於減少聲速剖面的誤差。 -
( 2 ) respectively by elastic theory analyses and methods of structural mechanics, transverse static analytical equations for flexible pipeline rigid pipeline are established whose outcomes are applied in numerical example to compare those with that by finite element method. ( 3 ) considering interaction of filled soil, pipeline and foundation, with an eye to non - linear soil model, in view of the initial geo - stress field and the effects of interface between soil and pipeline, and by finite element method the calculational model and method are built for transverse stress in pipeline. then, by the great finite element analytical software ansys, those outcomes are applied in calculation example of positive buried pipe to educe the distribution of circumjacent soil pressure and stresses on cross section and to compare it with that calculated by conventional ways before those outcomes are applied in engineering case of positive buried pipe with flexible filled materials to confirm distribution of soil pressures after the measure for reduction and to compare it with measurements. as a result, the model set up in this paper is proved to be applicable after all above - mentioned analyses
本文基於彈性理論和有限元原理與方法，分析了上埋式地下管道橫向力學計算方法和性狀並探討了上埋式地下管道的減荷等問題： （ 1 ）在分析現有幾種典型的管道垂直土壓力計算方法的基礎上，探討了影響垂直土壓力的主要因素以及改進的方法； （ 2 ）分別通過彈性理論分析法和結構力學的方法，建立了地下管道柔性圓環和剛性管涵的橫向靜力計算方程，並應用在算例中，把所得結果和有限元方法所得結果進行對比分析； （ 3 ）考慮填土、管道和基礎的共同作用、土體的非線性特性、初始應力場以及土體和管道的接觸面因素的影響，利用有限元的思路，建立了地下管道橫向力學有限元計算模型和方法，並且採用大型有限元分析軟體ansys ，針對上埋式管道工程算例，得出了管周土壓力以及管道橫截面應力的分佈狀況和規律，並和理論值進行對比；針對施加柔性填料的上埋式管道工程實例，得出了減荷后的土壓力分佈，並和實測值進行了對比。 -
Secondly, as for degree reduction of interval rational bezier curves, two methods are given : pseudo linear programming method ( plpm ) and pseudo optimal approximation method ( poam )
接下來對區間有理bezier曲線，給出兩種降階逼近演算法：擬線性規劃法（ plpm ）和擬最優逼近法（ poam ） 。 -
Secondly : i choose a non - linear filter named hybrid filter which combines linear and nonlinear filters is proposed for print gray image, it performs better than average fil ters and median filters on noise reduction. while retaining edges of an image. i suggest a modified version and fast implementation of this filter improve its performance. because of its reduced computation complexity, this filter excels in real - time tasks
因為噪聲時常包含非線性問題，針對這種情況，既要抑制噪聲，又要保護圖像邊緣，本文採用一從度指紋圖像上噪處理研究種基於線性，非線性的混合濾波器演算法，該演算法比均值濾彼器，中值加權濾波器，格形濾波器，具有更好的抑制噪聲的能力，不但較好的保持圖像地邊緣，而且能反映圖像的幾何結構和細節特性。 -
Its catalytic current was linear with the concentration of h2o2. most of interference was effectively eliminated and the inactivity of hrp under the too low potential to catalytize the reduction of h2o2 was avoided due to the enhanced potential of nr by zp in the composite film. while the silver colloid in the composite film enhanced the capability of zp to adsorb nr and prevented effectively nr from leaching off
4 、上修飾電極與辣根過氧化酶相耦合製成酶電極，顯著的催化了過氧化氫的還原，磷酸鋯提高了中性紅的氧化還原電位，大大的降低了測定的干擾，並有效的避免了辣根過氧化酶在過低的還原電位下失效，納米銀增強了膜對中性紅的吸附，有效的防止了其流失。 -
Linear reduction gear lh series can go with ac small - scale motor
可與ac小型馬達搭配使用的直線減速機lh系列。 -
An interior - point potential reduction algorithm is established to solve general nonlinear programming by a combination of the classical damped newton method and the primal - dual interior - point potential reduction method for linear programming
摘要結合經典阻尼牛頓方法和線性規劃內點勢減方法建立了一個求解一般非線性規劃問題的內點勢減演算法。 -
Separating the whole process of reduction in temperature into several time sections in which change in temperature is to be assumed as linear the total disparity in temperature including the disparity due to equivalent contraction can be obtained
然後，將降溫過程分成若干時段，且在時段內溫度呈線性變化求得各時段內包括水化熱溫差和收縮當量溫差在內的總溫差。 -
Separating ihe whole process of reduction in temperature into several time sections in which change in temperature is to be assumed as linear the total disparity in temperature including the disparity due to equivalent contraction can be obtained
然後，將降溫過程分成若干時段，且在時段內溫度呈線性變化求得各時段內包括水化熱溫差和收縮當量溫差在內的總溫差。 -
2 ) by analyzing the information and conditional information description mechanism of system states, the problem of stochastic model reduction is investigated based on state aggregation. the information loss and conditional information loss between the full - and reduced - order models are measured by entropy, while the independence and conditional independence within me components of aggregated state are measured by kullback - leibler information distance. several model reduction methods for stable and unstable linear systems are derived by employing two criteria to get aggregation matrices : the minimal information loss and the maximal independence
2 ）分析了隨機系統狀態空間模型中的信息和條件信息描述機制，以shannon熵為手段描述線性系統模型降階過程中的信息和條件信息損失，以kullback - leibler信息作為衡量降階模型狀態向量各分量之間統計獨立性的測度，針對穩定和不穩定系統研究基於狀態集聚的模型降階問題：分別運用最小信息損失準則和最大獨立性原則，得出幾種狀態集聚的信息論方法，並討論降階模型的性質、階次的確定、系統噪聲分佈特性等問題。 -
Abstract : the order reduction problem of the system state feedback and output feedback controllers is discussed according to the inclusion princip l e of linear discretetime stochastic systems. two kinds of conditions, restrictio n and aggregation, are presented for the controller order reduction. by designing the order reduced feedback controller for a 9order system, the properties of th e reduced order controllers and all order controllers are discussed
文摘:根據線性離散隨機系統的包含原理1 ，研究了系統的狀態反饋和輸出反饋控制器的降階問題.給出了控制器降階兩種類型：聚集和約束.通過一個9階系統控制器的設計，討論降階控制器和全階控制器的性能 -
One is the change of the operating environment and other unmeasurable disturbances. the other is that some simplifications such as model reduction and linear approximations are made during modeling due to the limitation of theory and technology. the difference is usually described as the uncertainties in control systems
在實際工業過程式控制制中，一方面因為外部工作環境變化和各種不可測干擾的影響，另一方面因為受理論和技術的限制，在建模過程中經常要做一些簡化處理，例如高階系統的降階處理、非線性方程的線性化等，這些原因使得實際系統與用以分析與綜合的數學模型之間存在著一定的差別，在研究中一般將這種「差別」敘述為系統的不確定性。 -
For state systems and semistate ( singular ) system, respectively, the problems of robust stability and the design of robust controller have been investigated based on linear matrix inequality ( lmi ), according to lyapunov - razumikhin stability and convex optimization theory, and barbalat ' s lemma and nonsingular linear transformation of model reduction, respectively
針對完全狀態系統，採用lyapunovrazumikhin穩定性理論以及凸優化等重要理論，以線性矩陣不等式作為研究的工具，研究了魯棒穩定性、魯棒控制器的設計問題；針對不完全狀態（奇異）系統，基於barbalat引理以及非奇異線性降階變換，研究了奇異系統的魯棒穩定性、魯棒控制器的設計問題。 -
The key idea is to model the leakage current reduction problem as a mixed - integer linear programming ( mlp ) problem in order to simultaneously place and size the sleep transistors optimally
該方法的核心是利用混合整數線性規劃方法同時確定插入細粒度休眠晶體管的位置和尺寸。 -
One attribute selection and reduction method is presented based on that using factor analysis technology to divide conditional attributes into groups to outline that conditional attributes in one attribute group is relevant to corresponding factor, and those factors are linear combination of target concept. information entropy evaluation is used for attribute selection based on that whether the attributes groups and attributes are strong correlation with corresponding target concept and factor, reserving attributes that are correlative to target concept, and deleting irrelevant attributes
提出一種屬性選擇和屬性消減方法，引入因子分析技術對條件屬性進行分組，每個屬性類內部的條件屬性與相應的因子線性相關，所有因子是目標概念的線性組合，根據屬性類或屬性是否與相對應的目標概念或因子強相關，引入信息熵評價方式對之進行選擇，選擇出與目標概念相關的屬性，剔除無關的屬性。 -
Linear transformation technology for image feature dimension reduction
圖像特徵維數約減的線性變換技術 -
In section 4. 2 we analyze its main idea and algorithm in detail, two relevant theorems included ; section 4. 3 provides plenty instances so to explain its nonlinear dimension reduction ability, section 4. 4 propose a combined method that integrates the advantage of various methods. in section 4. 5 we analyze some significant problems in lle, including the locality of manifold representation, the choice of the neighborhood, the intrinsic dimension estimation and the parametric representation of mapping. in section 4. 6 we design an algorithm for estimating the intrinsic dimension in the base of locally linear approximation and discuss the choice of its parameters
第四章是本文的重點內容，研究一種全新的非線性降維方法? ?局部線性嵌入方法，對它的思想和演算法進行了詳細的分析，給出演算法兩個相關定理的證明；第三節對比主成分分析，通過實例說明局部線性嵌入方法的非線性降維特徵；第四節在此基礎上提出了旨在結合兩者優勢的組合降維方法；第五節提出了局部線性嵌入方法中存在的若干關鍵性問題，包括流形的局部性、鄰點的選擇、本徵維數的估計和降維映射的表示，第六節基於局部線性近似的思想提出了一種本徵維數的估計方法，設計了實用演算法，結合實例對演算法中參數的選取進行了討論；最後一節提出了一種基於局部線性重構的圖形分類和識別方法，將其應用於手寫體數字的圖像分類識別實驗，實驗得到的分類準確率達96 . 67 。 -
In last section we propose a new method for image classification and recognition, and the result of experiment shows that the method is effective with classification accuracy of 96. 67 %. the main creative points in this paper are : propose the concepts of dimension - reduction function and embedding function, define the projection index in term of linear operator and prove two relevant theorems ; design a method to estimate the intrinsic dimension ; put forward an classification algorithm based on lle
本文的主要創新點在於：提出了降維映射和嵌入映射的概念；給出了投影指標的嚴格定義，證明了兩個相關定理；提出了一種用於估計本徵維數的方法並設計了實用演算法；提出了一種基於局部線性重構思想的分類和識別方法。 -
Extended approach three : a hierarchical reduction approach is imported, which is based on the combination of statistical feature selection and linear discriminant analysis
拓展演算法三：引入統計篩選和線性判別分析相結合的分層遞階約簡演算法。
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