弱平穩 的英文怎麼說
中文拼音 [ruòpíngwěn]
弱平穩
英文
weakly stationary-
But, the eeg signal that we can acquired is very weak and is badly contaminated by strong background noise, such as electrooculogram ( eog ), electrocardiogram ( ecg ), and line noise ( 50hz or 60 hz power frequency interference ), etc. eeg is a typical non - stationary random signal with a certain extent of non - gaussian and non - linear character
但是我們能夠獲得的腦電信號一般非常微弱、並伴有很強的背景噪聲，是一類典型的非平穩的隨機信號，且存在一定的非高斯性和非線性。傳統的分析處理方法一般將腦電信號近似認為是線性的準平穩的高斯分佈隨機信號，這使得分析結果往往不能令人滿意、實用性差。In light of the limitation of fast fourier transform ( fft ) for the method of traditional spectrum analysis to analyze the unsteady signal, wavelet and wavelet analysis are made for the typical unsteady process signal of starting up and shut down with the good characteristic of simultaneous localization in both the time and the frequency domains based on the field test on the vibration of two - row placed units in lijiaxia hydropower station, in which the signal is decomposed into different frequency band, and then the weak signal is caught and the dominant frequency is picked up for the analysis of the vibration source
摘要基於李家峽水電站雙排機組振動的現場試驗研究，並且針對傳統頻譜分析方法傅立葉變換（ fft ）對于非平穩信號已力不從心這一缺陷，利用小波分析方法在時域和頻域上同時具有良好的局部化性質，通過對開停機這一典型非平穩過程信號進行小波及小波包分析，將其分解到不同頻帶內，獲取微弱信息和提取優勢頻率，並對其作振源分析，得出開停機初始時刻因水流不穩均出現強烈的振動現象，且低頻段信號能量最大，開停機過程水流脈動壓力和尾水渦帶擺動是引起定子基礎振動的主要原因。During the new enlightenment of 1980s, the reform and practice of our education made great progress, however, such development brought about so many problems as the prevalence of the scientism and weakening of humanistic spirit caused by pursuit of educational modernity, the intensity of inequality during the pursuit of equality, the disrespect to the students " subjectivity, the upgrade of the education for exam in the back of quality education, our education growing in the aperture between the economy development and politic stabilization, etc. there are two reasons about it
在80年代新一輪的啟蒙下，教育改革和實踐取得了很大的成就，然而發展帶來了許許多多問題，如教育科學性追求所帶來的科學主義盛行和人文精神衰弱，平等追求中的不平等的加劇，學生的主體性得不到尊重，素質教育改革的背後是應試教育的步步升級，教育發展始終置於經濟發展和政治穩定的雙重擠壓之下等。In chapter, we study the nonparametric and linear model with weak sta - tionary linear model
在本文的第三章中，研究了誤差是弱平穩線性過程的線性模型與非參數回歸模型。This paper consists of two parts : in the first part, we will discuss the prob - lem of the pth - mean, complete consistency for the estimators of a nonparamet - ric and linear model with l ~ p - mixingale errors ; in the second part, we will dis - cuss the problem of the rth - mean 、 complete consistency for the estimators of themodels above with weak stationary linear process errors and the uniformly mean consistency. to the nonparametric model y _ ni = g ( x _ ni ) + _ ni, 1 i n, let g _ n ( x ) = w _ ni ( x, w _ n1, … ? xnn ) y _ ni estimate the unknown function g ( x ). to the linear model y _ i - x _ i1 1 + … ? + x _ iq ? _ q, we use lse _ nj to estimate the unknown parametric _ j
本篇論文主要是由兩大部分內容構成：一是關于誤差是l ~ p ?混合序列的線性回歸模型參數的最小二乘估計與非參數回歸模型未知函數的權函數估計的p ~ -階平均相合性和完全收斂性問題；另一部分是關于誤差是弱平穩線性過程的線性模型參數的最小二乘估計與非參數回歸模型未知函數的權函數估計的r ?階平均相合性和完全收斂性以及權函數估計的一致平均相合性問題。A important result is the one - orde r expression of ar ( p ) yt = dyt - 1 + e, from paralleling a high - order differential equation transformation into a one - order differential equation system, the one - order expression exposes that the ar ( p ) is only a certain more - multivariable power series process and, if a process is described as an ar ( p ), the sufficient and necessary condition is the spectrum norm a of the coefficient matrix d less than one. simplification of ar ( p ) not only brings about orthogonal f ( h ) but also provides global foretelling formula
作者用高階微分方程化一階微分方程組的方法，獲得多元弱平穩序列p階自回歸模型的一步滑動平均表達式，證明了ar （ p ）的是一個更高維的冪級數的線性過程，從而，說明了ar （ p ）關于序列依概率成立的充要條件是：該模型更高維的冪級數的線性過程的表達式中系數矩陣d的譜范數1 。As for material capital investment of farmer household, it ' s dynamics was declining, it ' s rate was stable and it ' s distribution was unequal. as for human capital investment of farmer household, normal education is the main method, the educational degree of household labors appeared partial distribution to normal distribution. compared with normal education, dynamics of investment in technique training and health was low, also the scale of labors mobility was narrow
就農戶物質資本投資而言，投資力度有下降趨勢，但投資比重較為平穩，存量呈偏正態狀分佈；就農戶人力資本投資而言，以正規教育投資為主，家庭勞動者文化程度表現為由偏正態分佈向正態分佈轉移的趨勢，相對正規教育，農戶的職業技術培訓與健康投資力度較弱，勞動力流動半徑較小。Abstract : a continuity wave model is put forward for the dispersion processof liquid - liquid two - phase system, by coupling mass and momentum conservation equations of two - fluid model. the conditions that result in a dispersion choke and the weak instability of a dispersion process are derived from the model. the phenomena of catastrophic inversion and transitional inversion are explained. the effect of drop size distribution on the maximum volume concentration of a emulsion is predicted using the model. according to the theory herein, emulsion inversion is the regime transition of liquid - liquid system due to the instablity of a dispersion process. the effect of drop size distribution on the maximum volume concentration of a liquid - liquid emulsion only occurs in a certain range of weber numbers
文摘:以雙流體模型為基礎，通過質量守恆方程和動量守恆方程的耦合，提出了液-液兩相系中彌散傳質的連續波模型.由該模型得到彌散傳質過程阻塞和彌散傳質過程弱不穩定性產生的條件，計算了液滴尺寸及其分佈對乳化液極大堆砌分數的影響，解釋了劇變型乳化逆變和漸變型乳化逆變現象.研究結果表明，乳化逆變是由於彌散傳質過程的不穩定性而引起的懸浮體型態的改變，隨液滴尺寸多分散性的增大，極大堆砌分數增大；隨液滴平均尺寸的增大，多分散性對極大堆砌分數的影響減弱；當韋伯數足夠大時，液滴尺寸及其分佈對乳化液極大堆砌分數無影響The us dollar weakened against european currencies while remaining flat against the japanese yen
美元兌歐洲貨幣轉弱，兌日圓則保持平穩。A kind of complete convergence of sums for negatively associated sequences of non - identically distributed random variables, in the second chapter, is obtained and the requirement of known results are weakened to the condition that absoluted moment - larger than zero - is finite. the strong convergence of negatively associated sequences of non - identically distributed random variables is discussed in the third chapter. in the fourth chapter, after extend the laws of the iterated logarithm of strong stationary case to weak stationary case, we obtain the strong convergence rate for negatively associated sequences of non - identically distributed random variables in linear models
其中第二章討論了一類不同分佈的na列的加權和的完全收斂性，我們把已有的結果對矩的要求放寬到了只要求大於0的絕對矩有限的情形；第三章討論了不同分佈的na列的加權和的強收斂性；第四章首先把文[ 10 ]的關于na的重對數律由強平穩的情形推廣到了弱平穩不同分佈的情形，然後得到了線性模型中不同分佈的na誤差列的收斂速度。The best way to avoid fatigue is to eat a balanced diet in a sufficient quantity and most importantly, to keep blood sugar levels stable, as low blood sugar levels cause shakiness, anxiety and headaches, says wilf jenkins, nutritional adviser to bupa wellness
英國保健中心營養顧問wilfjenkins表示，如果想減低疲倦的形成，必須注意飲食均衡，保持血糖水平穩定，因為血糖過低會引致身體虛弱、焦慮和頭痛。他續說，所謂飲食平衡，是指進食低脂肪和高澱粉質食物。But in more situations the random variables generating counting processes may not independent identically distributed, and in all kinds of dependent relations, negative association ( na ) and positive association ( pa ) are commonly seen. the research and apply in this aspect are rather valuable. in chap 2 we prove wald inequalities and fundamental renewal theorems of renewal counting processes generated by na sequences and pa sequences ; in chap 3 we are enlightened by cheng and wang [ 8 ], extend some results in gut and steinebach [ 7 ], obtain the precise asymptotics for renewal counting processes and depict the convergence rate and limit value of renewal counting processes precisely ; at last, in the study of na sequences, su, zhao and wang ( 1996 ) [ 9 ], lin ( 1997 ) [ 10 ] have proved the weak convergence for partial sums of stong stationary na sequences. however product sums are the generalization of partial sums and also the special condition of more general u - statistic
但在更多的場合中，構成計數過程的隨機變量未必相互獨立，而在各種相依關系中，負相協（ na ）和正相協（ pa ）是頗為常見的關系，這方面的研究和應用也是頗有價值的，本文的第二章證明了na列和pa列構成的更新計數過程的wald不等式和基本更新定理的一些初步結果；本文的第三章則是受到cheng和wang [ 8 ]的啟發，推廣了gut和steinebach [ 7 ] ）中的一些結論，從而得到了更新計數過程在一般吸引場下的精緻漸近性，對更新計數過程的收斂速度及極限狀態進行精緻的刻畫；最後，在有關na列的研究中，蘇淳，趙林成和王岳寶（ 1996 ） 》 [ 9 ] ，林正炎（ 1997 ） [ 10 ]已經證明了強平穩na列的部分和過程的弱收斂性，而乘積和是部分和的一般化，也是更一般的u統計量的特況，它與部分和有許多密切的聯系又有一些實質性的區別，因此，本文的第四章就將討論強平穩na列的乘積和過程的弱收斂性，因為計數過程也是一種部分和，也可以構成乘積和，這個結果為研究計數過程的弱收斂性作了一些準備。In this dissertation, the research trends for the problem have been introduced ; the ‘ dim ’ and ‘ point ’ has been strictly defined in mathematics from machine vision and human vision ; the ideal clutter suppression system based on clutter predication and the realization and evaluation of evaluation index has been studied, in succession the clutter suppression technologies have been researched. firstly, the classic nonparametric algorithm has been analyzed in detail and systematically, for it ’ s weakness that it cannot remove the non - stationary clutter ideally, kalman filter algorithm for clutter suppression in 2d image signal has been built. secondly, fast adaptive kalman filter is presented based on fast wide - sense stationary areas partition algorithm : limited combination and division algorithm based on quarti - tree algorithm, new taxis filter route algorithm which can break through the limitation of the necessity of pixel neighborhood of 2d filter and laplace data model with two parameters which is perfectly suitable for the residual image of kalman clutter suppression
首先分析了經典的非參數法，對於四種具有代表性的核，從前述的三個性能評價方面做了分析和對比，指出了其速度快的優點和對非平穩圖像適應性差的弱點，針對非參數法的弱點，重點研究了對非平穩圖像適應良好的卡爾曼雜波抑制技術:建立了非平穩圖像的類自回歸模型，在此基礎上建立了二維卡爾曼濾波基礎的兩個方程:狀態方程和測量方程;建立了非平穩圖像準平穩區域快速劃分演算法:基於四叉樹法的有限分裂合併演算法;二維空間的基於k排序的濾波路線演算法，突破了空域濾波路線上區域相鄰的限制;在這些研究的基礎上實現了快速卡爾曼估計，實驗驗證了該方法相對逐點卡爾曼估計可以提高運算速度三倍左右;雜波抑制結果表明傳統的高斯性檢驗並不適合卡爾曼估計后的殘余圖像，由此建立了殘余圖像的雙參數拉普拉斯模型，實驗表明其可以完好的吻合殘余圖像的概率密度曲線。The dimensional globoidal indexing cam mechanism, as a result of the steady movement, accurate, the transmission ceaseless and is suitable for high speed indexing and precise indexing. now it is the most ideal high speed precision indexing mechanism in the world, and it is being widely applied on each kind of automaton and the production line, this mechanisms prospect of application is broad, arouses the people enormous interest. but the examination of the globoidal indexing cam mechanism is a quite weak link, the manufacturers don ’ t give the examination because of the difficulty of the geometry shape error examination of the cam contour
空間弧面分度凸輪機構，由於運動平穩、準確、傳動無間隙而適用於高速分度和精密分度，是當今世界上最理想的高速精密分度機構，正被廣泛應用於各種自動機和生產線上，該機構應用前景廣闊，引起人們極大的興趣，而弧面分度凸輪機構的檢測是一個比較薄弱的環節，一般生產廠家由於凸輪輪廓幾何形狀誤差檢測困難而不予檢測，因此本試驗臺的研製具有極其重要的意義。These are the conclusions : ( 1 ) the regulation on security issuance protects the present interest of the noise traders, weakens the arbitrage power of the issuers on the primary market, creates the living space for the noise traders, and assists them to expel or assimilate the value investors on the market, and finally become the dominators of the market. ( 2 ) to improve the structure of the market investors and to develop the blue chip stocks are the important premises to realize " the highly unification of the development, standardization and tolerance of the chinese stock market ", and to realize the smooth regression of the stock prices to their real value
本文的結論是： （ 1 ）證券發行管制保護了噪聲交易者利益，削弱了一級市場發行方的套利力量，創造了噪聲交易者的生存空間，推動了噪聲交易者對價值投資人的驅逐和同化，使噪聲交易者主導市場； （ 2 ）改善投資人結構和增加大盤蘭籌股是實現中國股市「發展、規范與市場承受能力高度統一」 、以及股票價格向價值平穩回歸的重要條件。For the speckle depressing, we develop a multi - description model to describe the fundamental properties of the sar images. different models are used to describe different type of regions in sar images. these models include the homogeneous region model and the non - homogeneous region model, and the later consists of the strong scatterer model, the line - like region model and the weak edge region model
在sar圖像相干斑抑制方面，建立了一種針對相干斑抑制的sar圖像多描述模型，用不同模型描述sar圖像中不同類型區域，涉及到平穩區域模型和非平穩區域模型，非平穩區域模型又細分為強散射中心模型、線狀區域模型和弱邊緣區域模型等。It comes up with a new notion, d - solution, which is applied to the distance estimation, by virtue of hilbert space ; furthermore, the dissertation has gained a necessary condition which is identity of minimum mean - square value in linear function classes, so that d - solution extends minimum mean - square value within the domain of nonlinear function equation or equation system ; and, the dissertation studies in detail the classical moment estimation and maximal likelihood estimation on the parameters of ar ( p ), a series of theorems in the estimation section shows the moment estimators are consistent on the ground of large samples jikewise, those distribution functions of the estimated parameters accord to maximum likelihood estimation converge gauss distribution if the white noise is gaussan
首先，藉助hilbert空間理論，提出了距離估計的d -解，給出了d -解的必要條件，這個條件在線性函數類里即是極小二乘估計法， d -解的必要條件滿足的方程實質上將極小二乘估計法推廣到多函數及非線性函數類。再而，詳細地研究了多元弱平穩序列自回歸模型ar （ p ）的參數經典的矩的替代估計和極大似然估計，獲得矩的替代估計的一致性的結果。對基於gauss白噪聲假設多元弱平穩序列自回歸模型的均值、白噪聲的協方差陣的極大似然估計都有依分佈收斂到多元正態分佈的統計性質。Corporation, as the major and most active civil subject in this modern economic society, just like a lively natural person, has its own process of emerging, growing declining and finally disappearing. their capacities of surviving are greatly different among each company. some stronger ones operate well for hundreds of years, while some may have to terminate only after years or ever days. the termination of a company may have great impact on the rights and benefits of its share holders, debtees, debtors and employers, so the company should properly deal with all there interests after terminating, ending its rights and obligations with other subjects so as to protect the peaceful order of the economic society. but as a civil subject in law, corporation has its way of obtaining the capacity of rights greatly different from that of a natural person, as a result a company shall have a different liquidation process after termination comparing to the process for a natural person after his / her death. at present, many defects exist in china ’ s corporation legal system, including the system of company liquidation. the regulations in corporation law are too few and abstract which can not guide the company liquidation activities in reality, seriously destroying the normal economic order of social life
公司生存的強弱之分有著十分巨大的差距，有的公司已存續百年仍生機勃勃而不見頹勢，有的公司成立不過數日或幾年就不得不終止。公司的終止會對公司股東、公司的債權人、債務人以及公司的職員的利益產生重大影響，公司在終止之必須對各種相關利益進行妥善安排，將公司與相關主體之間的權利義務歸于消滅，以維護社會經濟生活的平穩秩序。但由於公司作為法律擬制的民事主體，其取得權利能力的方式與自然人有著迥然的差異，這就決定了公司在終止時應當進行與自然人死亡后迥然不同的清算程序。Dfmc transmission ltd. co. regard product ma nagement as strategy, and quickli develop a71, a87, a93, a100, a121d, a121j, a121q, a130, a148, a164 etc. series gearbox. for exsample, " slow an half pulse " development a148 gearbox, aim the shortcoming of competitors, use bigger press angle, all splay tooth, improve gearing intension and drive smooth ; use inertia tooth link synchronizers which have rapid synchronization with reduced effort, improved engagement conditions, increased performance and service life etc. advantages. combine promotion, political power, public relations and the same price to expand place, to increased the market
變速箱公司把產品開發工作提高到戰略高度來考慮，及時開發出a71 、 a87 、 a93 、 a100 、 a121d 、 a121j 、 a121q 、 a130 、 a148 、 a164等系列中心距變速箱，如「晚半拍」開發的a148變速箱，針對競爭對手產品的薄弱環節和質量缺陷，採用大壓力角、全斜齒，提高了齒輪強度和傳動平穩性；採用慣性齒環式同步器，結構更緊湊、可靠等，技術優勢明顯；並充分利用促銷手段、政治力量和公共關系，採用跟價策略，廣開配套渠道，已形成市場。This dissertation deals with how to estimate parameters of a model of multivariable weak stable auto - regression equation on time series ( marked by ar ( p ) ) and formulizes properties of them
本文系統地研究了多元弱平穩序列自回歸模型ar （ p ）的參數估計方法及性狀。分享友人