索得率 的英文怎麼說

Due to existing signal processing technology ’ s shortage such aslow measurement, narrow measurement range precision and other poor performance, we introduced a high - precise signal processing technology : firstly, to get power spectrum with hanning windowed welch modified periodogram, search its peak value frequency ; secondly, to apply zooming analysis via goertzel algorithm ; at last, to get a highly precise doppler frequency with energy centrobaric rectifying algorithm 。 the simulating result indicated that this technology introduced could get accurate doppler frequency 。 depending on above discussed technology, we designed a signal processing scheme, and developed a signal processing system. the running result showed high performance, verified the feasibility and reliability of the highly precise signal processing technology introduced. in a word, the technology improved ldv ’ s performance such as measurement precision, measurement range, dynamic response time 。 and it will have a wide application foreground

針對存在的缺點，本文提出了一種應用於激光多普勒測速的高精度信號處理技術，即首先利用加hanning窗的welch修正周期圖演算法得到信號功率譜，搜索其譜峰值頻率，接著利用goertzel頻譜細化演算法對搜索的譜峰進行細化分析，再引入能量重心頻譜校正演算法對細化后的譜峰進行校正分析，從而將離散頻譜分析演算法、頻譜細化演算法和頻譜校正演算法三者有機結合起來，充分發揮各自的優點:通過加hanning窗的welch修正周期圖演算法快速得到功率譜及峰值頻率，通過goertzel演算法獲得分析頻帶的高解析度頻譜，然後通過能量重心校正演算法對細化后的頻譜進行高精度校正，這樣不僅保證了演算法的高效性，而且大大提高了分析的精度。

On data level, it is firstly explored fusing signature data from sparse - band collocated radars to obtain wider band target frequency response. the most difficult problem which restricts the fusion process is the lack of mutual coherence between the various radar subbands

在數據層，首先探索了對多個配置在同一地方的不同頻帶雷達測得的目標頻率響應進行融合，以獲取更寬頻帶目標頻率響應的方法。

In the process of arithmetic design, newton " method is used to compute power flow of network. graph theory knowledge is used to determine all paths from generator to load. to improve efficiency, thesis use branch expunction method to optimize the node order

在演算法設計過程中，採用牛頓拉夫遜法進行潮流計算得到系統潮流分佈，利用圖論原理中的路徑搜索演算法確定了發電機對負荷的供電路徑，此外為了提高潮流跟蹤的計算效率，利用了支路消去法進行節點順序的優化。

The extracted marrows ganoderma lucidum and semen zizyphi spinosae contained in threesss can regulate secretion of hydrocortisone in human body and reduce excitation of human body during nighttime ; in addition, ganoderma - lucidum spores and semen zizyphi jointly stimulate secretion of sleeping - inducting peptide in body. improve rate of " high efficient sleeping quality and immunity. recover and strengthen mental strength, mental strength and vigor. through sleeping. the psychlogy and physiology return to the youth level

「索萊爾」多元明膠囊中所含的靈芝和酸棗仁提取精華，能調節人體內皮質醇的分泌，降低人體在夜間的興奮度；此外靈芝孢子粉和酸棗仁共同作用，能夠在體內刺激「睡眠肽」和格里酶「的分泌，有效促進「高能睡眠」率，延長「高能睡眠」時間，從而達到全面改善睡眠質量，提高免疫力，使體力、腦力、精力得到迅速恢復和加強，通過睡眠將生理及心理狀態調整到青春期水平。

In recent years, plentiful and substantial fruits achieved by the lb method in simulations of hydraulics, multiphase flows, flows in porous media and heat transfer as well as magnetohydrodynamics, have revealed a broad perspective of application of this method, it will become a powerful competitor to the conventional approaches. in order to absorb the recent achievement in theory and application of the lb method, explore new ways in hydraulic computation to promote the development of practice, some work is car ried out in this thesis, as following : advances in the theory research and application, deductive process of the d2q9 model and some other commonly used models of the lb method are summarized. based on the hydrodynamic and general boundary conditions, a new joint boundary condition is presented, it integrates advantage of the two conditions above and obtains very good results in dealing with all kinds of boundaries of flow fields

為了消化和吸收近年來lb方法在理論和應用方面的新成果，探索在水力計算方面的新途徑以促進lb方法實用化的發展，本文進行了下列研究工作：綜述了lb方法在理論研究和實際應用方面的新進展，以及d2q9模型的推導過程和其他一些常用的模型；在水動力邊界條件和通用邊界條件的基礎上提出了一種新的聯合邊界條件方法，它綜合了上述兩種邊界條件的優點，在流場的各種邊界處理中取得了非常好的效果，經過模塊化的處理以後這種邊界條件具有更好的實用性；針對均勻網格的lb方法計算效率較低的不足，提出了雙重網格的latticeboltzmann方法，通過二維poiseulle流動、后臺階流動和渠道方槽流動三個算例的模擬，證明這種方法能夠明顯地提高流場模擬的計算效率；此外，根據復雜區域流場的特徵提出了latticeboltzmann方法的分塊-耦合演算法，利用lb方法的計算特性實現塊與塊之間的數據交換，充分利用計算資源提高計算效率，通過對「 t 」型、 「十」型和「 x 」型分岔管道流場的模擬，展示了這種演算法的特徵和優點，以及它所具有的應用前景。

The nitration and reduction of piperonal in different experiment conditions were investigated. thus, the high yield of medical intermediate 6 - aminopiperonal is obtained

以胡椒醛為原料，用不同的實驗條件探索胡椒醛的硝化和還原，從而得出產率高標題化合物的醫藥中間體

At last, the subject catalogues with their pages are evaluated according to the indicators. in addition, the paper uses evaluation criterion on sorting the result documents

另外，本文借鑒信息檢索檢索得到的文檔結果排序的評價方法，以alexa網站利用點擊率指標進行網站主題目錄評價結果為標準答案，給出了對網站主題目錄評價結果的評測方法及相應的評測結果。

The modern technology give a chance for the pattern of transmitting knowledge with network, the course based on network have opened up it ' s way in china, our pursuer paid more attention to the mode, but in america, pursuer have studied the more width aspect, thereinto the investigation and design of the information in the course based on network is very important, for the design of the information decide the pattern how the student receive the information, which will effect the way of knowledge understanding and memory, and the way is related to the study pattern, so the design of the information in the course based on network is very important to the efficiency and effect. so the core of the paper is the investigation and design of the information in the course. i have the entropy from the information science as the analyse tool to analyse the information, these work tell us the efficient pattern to transmit information, based on the result, i design the net page, of course, study theory and the character of the net itself are also the factors i employ for design a good net page. then, links and navigation is constituted for students adapt to the course based on network

當今技術的發展給知識以網路為媒介來傳播的學習方式帶來前所未有的機遇，網路課程在國內迅速開展起來，但是國內研究者的注意力主要集中在對網路課程模式的探索上，放眼國外，他們的研究觸角已經涉及到網路課程比較細致的方面，尤其是對網路課程信息的研究構成了國外網路課程研究中的比較重要的一個方面，而網路課程中信息的設計是重要的，因為信息的組織設計是為了接受者能對信息進行有效的信息加工，信息的呈現模式影響著學習者對知識的理解和記憶方式，進而決定了學習者的學習模式，因此網路信息的設計在網路課程傳遞的效率和效果中就佔有很重要的位置。基於這個觀念，本文把網路信息的組織設計作為研究的重點，引入了信息科學作為研究的主要工具對網路中的信息作以量化分析研究，主要應用了信息科學中信息熵的公式進行推導，得到學習內容信息組織的基本模式，並充分利用網路自身特性和學習理論對知識信息進行細致的設計，此外還對鏈接和導航信息進行了設計，在網路課程的適應性方面作出了努力，把交互信息與輔助學習信息的分析設計與應用和對網路頁面信息的總體調節優化作為主體信息設計部分的補充，最終形成了網路信息組織設計的方案，力求創設一個能夠有效傳遞知識信息，減少網路自身弊病，並帶有一定適應性的網路學習環境，也使更多的網路課程的設計者關注網路信息這個因素。

Intelligent cad may be the developing trend of cad. it involves in many theories and subjects which is at the exploration stage. the research is to make a try of professional application of mould cad ; the purpose is to enhance the efficiency of mould design, and to get equivalent skill for a youngling designer

模架設計專家系統是模架設計的發展方向，目前尚處于探索階段，所涉及的知識較多，課題的研究是對模具cad專業化應用的一種嘗試，目的是提高使用者在模架設計中的效率，從而使得沒有經驗或經驗不夠豐富的設計者與有經驗的設計者可以同樣完成復雜注塑模具的設計。

If you have more than one auxiliary lens it ' s probably best to get kmz ' s zeiss copy multi - finder

如果你有一個以上的輔助透鏡，它的問題的最好方法，以獲得頻率的蔡司拷貝多媒體搜索器。

And at this foundation through the dispersed domine analyse the paper makes a great emphasis on the application of computer aided design and simulation, then designs a series of apfc design and simulation software. this paper takes out a set of designation and simulation on base of actual circuit. the reliable result, output voltage and inductance current which are got from this software are the same as the actual value

本文在對一系列apfc電路設計、模擬分析方法討論比較的基礎上，著重應用離散時域法進行了計算機輔助電路設計和模擬方法的應用探索，以此為基礎設計了pfcexpert功率因數校正電路設計、模擬軟體，針對實際電路給出了整個設計和模擬全過程，通過實驗驗證了該軟體所得到的精確穩態解、瞬態輸出電壓和電感電流，與實際電路輸出基本相同，所建立的電路模型重現了電路的運行過程，反映了電路的實際工作機理。

It can dynamically determine the structure information need to index according to real query loads and opti mization of index. second, to consider the effects of structural information on result relevance ranking, this dissertation proposes a ranking algorithm that consider both the frequency distribution and structural distribution of keywords in the result, and a dynamic element - oriented method to compute the weight of keywords

第二，為考慮xml數據中的結構信息對查詢結果相關度值的影響，本文提出了一種綜合考慮關鍵字頻率分佈特徵和結構分佈特徵的查詢結果相關度演算法，以及一種基於節點的關鍵字權重計演算法，取得了更優的檢索性能。

And the output components of the despread correlator under the condition of additive white gaussian noise ( awgn ) are analyzed to derive the expressions for the false alarm probability and the detection probability

同時也對解擴相關器在接收端噪聲為加性白高斯噪聲情況下的輸出成分進行了詳細分析，推導得出大步進搜索的虛警概率和檢測概率的公式。

To explore why the ratio of collectable wort extract is higher than that of non - extruded, the influences of all parameters of rice extrusion system ( barrel temperature, material moisture, screw speed ) on resistant starch content of extuded rice were studied by using second - order quadratic orthogonal rotating combination design method

摘要為探索擠壓蒸煮大米啤酒輔料麥汁浸出物收得率高於傳統不擠壓蒸煮啤酒輔料收得率的原因，用二次正交旋轉組合試驗法設計安排試驗，研究了大米擠壓蒸煮系統諸參數（套筒溫度、物料含水量、螺桿轉速）對大米抗性澱粉含量的影響規律。

If it is not good enough, optimal control module based on principle component analysis and clustering search will function for optimization. this algorithm makes no request for accurate analytical model and maintains search efficiency and self - adjusting performance by an optimal parameter set derived from process data, which is proved to be effective. by practical running of dcs, a prominent tracing performance is gained and variation of parameters is limited in a small range, which enhance stability and production benefit of sintering process obviously

燒結過程是一個影響因素復雜、干擾嚴重、具有不確定性的工業過程，傳統的基於對象精確解析模型的優化策略難以奏效，因此在控制參數優化模塊中提出了一種基於主元分析和聚類搜索的優化匹配演算法，該演算法不要求對象的精確模型，其搜索效率和自校正性能依賴于從生產過程歷史數據中抽取的優化參數樣本庫，充分利用了燒結生產過程積累的生產數據所包含的信息，取得了不錯的效果。

Compared with exhausitive search algorithm, the search amout is remarkable reduced by this algorithm and the algorithm is very efficiency. with the searched perfect binary array pairs and quasi - perfect binary array pairs, new perfect binary array pairs of high dimension and volume can be constructed by all kinds of construct methods

通過與窮舉搜索演算法的比較，本演算法大大減少了搜索數量，具有較高的效率。利用搜索得到的最佳二進陣列偶和準最佳二進陣列偶，可以用各種構造方法構造出新的高維和高階的最佳二進陣列偶。

But it can " t keep up with current staggering development of web with time passing by because its limited coverage and low efficiency

但是它覆蓋面狹窄，檢索效率低，隨著web的迅速發展，越來越顯得力不從心。

Computer aided design, san jose, usa, 1998, pp. 259 - 266. 6 sakanushi k, nakatake s, kajitani y. the multi - bsg : stochastic approach to an optimum packing of convex - rectilinear approach to an optimum packing of convex - rectilinear blocks. in proc

從而在進行布圖擺放得到布圖結果之前，即可以對l t模塊的子模塊的位置進行修正，盡可能保證子模塊之間的相對關系，提高布圖搜索效率，避免對不合理解的搜索。

Software reuse come up on this background. as an effective approach to solve software crisis, software reuse is getting more and more attention, and with perfection of component specification such as corba, opendoc, ole2 and javabeans, reuse emphases divert to how to develop reusable components, how to manage components and how to improve the component search efficiency

軟體復用在這種背景下發展起來，並且作為解決軟體危機的有效途徑，越來越得到廣泛的重視，目前隨著構件規范corba ， opendoc ， ole2 ， javabeans的日趨完善，軟體復用的重點轉移到如何開發復用的構件，如何對構件進行管理，以及如何提高構件的檢索效率。

In system design, we present dispatcher tactics of member search engine that user fond of. these member search engines on the basis of mobile agent, which provide an environment for parallel processing, take full advantage of ontology which expands the requirement of users to the semantic words set and provide the document analyzer that can filter the web pagers returned by the search mobile agent according to the certain algorithm. consequently wiirs presents the most relevant documents to the user

為提高系統的性能和易用性，還給出了基於用戶偏好的成員搜索引擎的調度策略，在成員搜索引擎系統結構中，不僅利用本四川大學碩士學位論文體論中概念規范、語義豐富的特點，將用戶的檢索要求擴充成語義集，並且將檢索到的文檔通過文檔分析器進一步過濾，最終得到與用戶檢索要求內容匹配度較高的文檔，而且提供了一個并行處理的環境來顯著提高搜索效率。