有效時寬 的英文怎麼說
中文拼音 [yǒuxiàoshíkuān]
有效時寬
英文
effective time width-
In all kinds of complicated network, oriented linking and unlinking, communication frequency resource is strained, and bandwith to transmitting audio frequency signal is too restricted, complicated and fluky, while audio frequency data exponential have been increased in the last several years. under the circumstances, based on the research of predecessor, this paper studies wavelet analysis ' s maths gist and practices significance on signal process, and puts forward a optimized wavelet package condensation arithmetic to process audio frequency data, which gives attention to coding efficiency, multirate and compression delay. simulation experiment on the arithmetic has been done by matlab
針對無連接和面向連接的各種復雜網路環境下，通信頻帶資源緊張，音頻傳輸帶寬有限且復雜多變，而各種音頻數據又日益增多的局面，本文研究小波分析在信號處理方面的數學依據和在數據壓縮方面的實際意義，在前人不斷工作的基礎上，提出了一種優化小波包變換編碼方案用於音頻數據的壓縮演算法，兼考慮了編碼效率、多碼率和壓縮時延多個方面，並在matlab環境下做了模擬實驗，對各種音頻信號及多種小波函數做了模擬結果比較，實驗結果證明該演算法可以在一定計算復雜度下可以很好地改進壓縮效果，達到多碼率下實現實時編解碼的過程，在高速dsp晶元等硬體設備支持下，可以有效應用於實際復雜多變信源編碼。According to the present mpe situation and the current servicemen " s knowledge structure and level, the kc has now been most directly demonstrated by building up a reasonable and expansive knowledge platform quadruple - bordered by nature science, social science, intellection science and especially the frontier science out of the intercross between the beyond sciences, then being exploited its resources to ensure the realization of the mpe ' s eventual goal
針時當前軍隊思想政治教育形勢的要求和官兵現有知識結構水平，知識育人功能的最直接的體現是從自然科學知識、社會科學知識、思維科學知識和一些軍事學科與其他學科交叉產生的邊緣學科知識這四個方面為受教育者裕建一個合理而寬廣的知識平臺，力求藉助這一知識平臺的底蘊來保證軍隊思想政治教育育人目標的有效實現。This article puts forward a solution named divide - assemble by deducing the size of bp neural network to overcome entering the local best point, the dividing process is that a big bp neural network is divided into several small bp neural networks, every small bp neural network can study alone, after all small bp neural networks finish their study, we can assemble all these small bp neural networks into the quondam big bp neural networks ; on the basis of divide - assemble solution, this article discusses the preprocessing of input species and how to deduce the size of bp neural network further to make it easy to overcome entering the local best point ; for the study of every small bp neural network, this article adopts a solution named gdr - ga algorithm, which includes two algorithms. gdr ? a algorithm makes the merits of the two algorithms makeup each other to increase searching speed. finally, this article discusses the processing of atm band - width distribution dynamically
本文從bp網的結構出發，以減小bp神經網路的規模為手段來克服陷入局部極小點，提出了bp神經網路的拆分組裝方法，即將一個大的bp網有機地拆分為幾個小的子bp網，每個子網的權值單獨訓練，訓練好以後，再將每個子網的單元和權值有機地組裝成原先的bp網，從理論和實驗上證明了該方法在解決局部極小值這一問題時是有效的；在拆分組裝方法基礎上，本文詳細闡述了輸入樣本的預處理過程，更進一步地減小了bp網路的規模，使子網的學習更加容易了；對于子網的學習，本文採用了最速梯度? ?遺傳混合演算法（即gdr ? ? ga演算法） ，使gdr演算法和ga演算法的優點互為補充，提高了收斂速度；最後本文闡述了用以上方法進行atm帶寬動態分配的過程。Furthermore, this dissertation also gives a comprehensive analysis and comparison to the torque ripple factor, torque - current ratio and other aspects for pseudo - sinusoidal emf bldcm drived by 120 conduction mode, 180 conduction mode and self - synchronous svpwm mode respectively. the simulation and the experimental results indicate that self - synchronous svpwm method is more effective for minimizing the torque ripple without any expense of the torque - current ratio when the crest width of the back - emf waveform is less than 107 electrical angles
對準正弦波反電動勢無刷直流電動機在120導通方式、 180導通方式和自同步svpwm三種控制方式下的轉矩脈動系數、轉矩電流比等方面進行了全面的分析與比較，模擬研究和實驗結果表明，當反電動勢的平頂寬度小於107電角時，採用自同步svpwm控制方法可以在不損失轉矩電流比的基礎上，更有效地抑制電磁轉矩脈動。Based on the pop network structure, load balancing provides an efficient and low - cost way to broaden server band and improve the data processing ability of computer, and, at the same time, avoid single point mistakes
負載均衡建立在現有網路結構之上，它提供了一種廉價有效的方法來擴展服務器帶寬，增加吞吐量，提高數據處理能力，同時又可以避免單點故障。Meanwhile, the successful application in eplrs validates the effectiveness and justification of the scheme and its support to the high data - rate real - time services. it provides one choice for multi - hop wireless network to support the bandwidth and delay sensitive services
同時， eplrs通信網路的應用實例也驗證了本方案的有效性、合理性及其對多跳無線網路高速實時業務的支持，為多跳無線網路支持帶寬時延敏感業務提供了一種選擇方案。The soft switching, phase - shifted pwm and bi - directional dc - dc converter hang together, depress circuit switching loss and noise effectively, which provide condition to increase switch frequency, efficiency and reduce size and weight for the converter ; at the same time, it is proved the converter can achieve zvs in larger load variation, and the converter has the virtue of structure compact, voltage and current stress small such as ordinary hard switch converter
該變換器把軟開關技術和相移控制pwm技術以及雙向dc - dc變換器技術有機結合在一起，有效地降低了電路的開關損耗和開關噪聲，為變換器裝置提高開關頻率、效率以及降低尺寸及重量提供了良好的條件;同時，能拓寬零電壓開關的范圍，使變換器在較寬的負載變化范圍內都能實現軟開關。In the current experimental parameter range, thin and / or ultra - thin soi with thickness of 50 - 150nm and box of 70 - 180nm thick were obtained. compared to the conventional simox - soi, the soi materials manufactured by water plasma ion implantation at the same implantation dosage and ion energy have much thicker box layers
本論文一個重要發現是以水等離子體離子注入方式所形成埋層sio _ 2厚度得到了大幅度的展寬，相比傳統simox法，其展寬幅度高達50 ，這一重要發現為降低注入時間和soi制備成本提供了有效的途徑。Now we can transmit data, voice, and fax in communication lines whose bandwidths from 9. 6kb / s to 256kb / s through the voice / data multiplexing system. this method is good for improving bandwidth utilization and used widely in telecommunication, finance and military
語音擻據復接設備可以實現在一條帶寬為9 . 6kb s 256kb s的用戶數字線路上實時傳輸數據、壓縮語音傳真的綜合業務，是利用帶寬的有效手段，在電力、電信、金融和軍事領域應用日益廣泛。Therefore this paper proposes the delay equalization algorithm which can both guarantee the qos of high priority traffic and effectively reduce the delay of ubr traffic in broadband satellite network. it is based on the prediction and equalization the delay of vbr or abr traffic so that the saved slots can be allocated to ubr traffic. the approach of dynamic alternation slots between vbr and ubr traffic can improve the mean tdma frame utilization while reducing the delay of ubr traffic
因此本文在基於流量估計的資源調度演算法基礎上，提出了一種在寬帶衛星網路下能夠保證高級別類業務qos ，同時又能夠有效地降低ubr業務時延的時延均衡（ delayequalization ）調度演算法，它是基於對vbr或abr業務時延的預測，均衡時延的方法，保證vbr或者abr業務qos的同時，將節省的時隙分配給ubr業務。This method provides unequal protection for spiht bet stream with different importance, and adaptively adjusts the source and channel coding rates according to the time - varying characteristic of the channel, thus yields good performance and high reliability without adding extra bandwidth. simulations in rayleigh channel show that the scheme can obviously improve the image quality compared to eep and uep scheme, especially when the channel is in bad condition
本方法通過對spiht編碼碼流重要性的不同而進行不同程度的保護，並利用通道的時變特性自適應地調整信源和通道編碼速率，從而在不增加額外帶寬的前提下有效地提高了系統的性能和可靠性，經過計算機模擬模擬，得出了在瑞利通道中，傳輸條件惡劣的情況下，本方法比eep和uep能更好的提高重建圖像的質量。Rational control of the pump ' s work and rest time is the key to solve the problem of void pumping. this essay gives theoretical analysis and cost comparison of every detective method, considers power detection as the most effective method, and puts forward several ways of power consumption and effectiveness power consumption at the same time. the designed electricity saving controller integrate all the above four methods, and it can work with different methods by switch between automatic and manual to broaden its accommodation
解決油井空抽現象的關鍵是合理控制開機時間與停機時間長度，本文對各種檢測方法進行了理論分析及成本比較，認為功率檢測最行之有效，同時提出了功率檢測的幾種實現方法，即瞬時功率法、人工電耗法、設定功耗法及效益功耗法，所設計的節電控制器集以上四種方法於一身，可通過自動手動切換採取不同的功率檢測方法，使其適應范圍增寬。The future wireless mobile communication systems are expected to provide ubiquitous, high - quality, and high - rate mobile multimedia transmission. however, hostile multipath fading radio conditions give rise to serious inter - symbol interference ( isi ) ; even worse, wireless channel are often time varying, which makes the system more vulnerable and more difficult to track the channel state. orthogonal frequency dvision multiplexing ( ofdm ), which is inherently resistant against isi, has invoked a popular research interest in recent years, and has been a promising candidate technology of the physical layer for future weideband high - date - rate wireless communications. notwithstanding, ofdm is much more vulnerable to errors of both time and frequency synchronization and to that of channel estimation, and how to obtain correct timing and channel estimation efficiently is highly critical to ofdm systems. the dissertation will focus on both of the aspects of ofdm systems mentioned above
但是無線環境的多徑特性造成通信系統中嚴重的符號間干擾，同時無線通道的時變性使得通道特性跟蹤復雜。而正交頻分復用技術（ orthogonalfrequencydivisionmultiplexing ， ofdm ）正是一種解決符號間干擾的有效傳輸手段，因此ofdm技術作為未來寬帶高速率無線通信的物理層候選技術在當前引起了一股研究熱潮。但ofdm系統對定時同步誤差和通道估計誤差非常敏感，如何在ofdm系統中準確快速地實現符號同步和通道估計是至關重要的，本論文將重點針對這兩個問題進行討論。The slope variety of the width distribution is put forward as one of false dynamic characteristics which can reflect the dynamic information such as velocity variety etc effectively. due to the feature is added, the ability of the system identification is improved rapidly
並首次提出了將寬度變化斜度分佈作為一個偽動態特徵，該特徵可以有效地反映出簽名人書寫時的速度變化等動態信息;它的加入，可有效地提高系統鑒別能力。Every room is equipped with adsl internet connection. the hotel also have the facilities of business center, conference rooms, shopping arcade, nightclub, ktv rooms, lounge bar, swimming pool, sauna center, chess room, beauty salon and otherrecreation activites on the beach. the resort is a famous tourist attraction with radiant and enchanting sunshine all year around, clean and blue sea - water, fine and soft sand, and green coconut trees dancing to the seaside breeze
酒店建築面積為二萬多平方米，背山面海，共有山海房200間套，所有房間均帶陽臺落地玻璃窗戶設計提供免費無限時寬帶上網介面，樓體結構一字排開，海景房觀海效果為180度震撼型超級無敵海景，與沙灘無任何隔離帶，零距離接觸大海。Radio - frequency noise jamming is an effective jamming to pulse compressed ( pc ) radar. it shows the best jam quality when it ' s bandwidth equals to the jammed signal ' s bandwidth and it ' s central frequency equals to that of the jammed radar ' s receiver
射頻噪聲干擾對脈沖壓縮雷達是一種有效干擾，在其帶寬等於雷達信號帶寬，中心頻率對準雷達的中心頻率時具有最佳的干擾品質。The arrangement with belgium for the avoidance of double taxation on airline income has ceased to have effect from y a 2004 2005, the year since which the agreement between the hksar and belgium for the avoidance of double taxation and the prevention of fiscal evasion with respect to taxes on income and on capital has effect in hong kong
香港特別行政區與比利時就收入及資本稅項避免雙重課稅和防止逃稅協定自2004年4月1日開始的課稅年度在香港具有效力。與此同時，與比利時就航空服務收入的雙重課稅寬免安排在香港失效。By using fractional brownian motion envelope process and additional maximum delay constrain, the algorithm overcomes the shortcoming of those packet - loss - probability based methods which can not guarantee the packet maximum delay
該演算法採用分形布朗運動包絡過程對自相似業務進行分析，通過增加最大延時約束條件，克服了原先基於分組丟失概率的有效帶寬計算方法不能保證業務最大延時要求的不足。We derived theory for abstraction of bandwidth resource and characterization of system capacity for multi - class fading system. bandwidth resources allocated to a user can be abstracted as effective bandwidth, determined by the user ’ s source data rate and target bit error rate. system capacity can be characterized by a theoretical bound. simulations show that actual system capacity is close to the theoretical bound
為一個用戶所分配的帶寬資源被表示為有效帶寬，用戶對數據速率和比特誤碼率的要求決定了對有效帶寬的要求。利用有效帶寬的概念來描述系統的用戶容量並給出了系統容量的理論界限，進一步地，還得到了系統存在發射功率限制時的容量界限。The combination absorbs microwave well with the least reflectivity of - 31. 59db, and minimally having 2. 31ghz - frequency band. these results illuminated the directional law of combined materials, it is that, when the double deck with the different thickness, no matter what is absorbing or transforming layers, its absorbing performance would not be influenced on the whole. when the double deck with the same thickness, the combining sequence of materials would cause crucial influence on its absorbing performance
在8 . 2 12 . 4ghz頻段內，最小反射率達- 45 . 93db ，有效頻寬為4 . 0ghz ；當變換層和吸收層厚度相同，總厚度為2mm時，要獲得較好的吸波性能，必須以高溫處理的材料作變換層，低溫處理的材料作吸收層，即存在材料組合的方向性，其中以1000分別與600 、 700處理的材料組合性能最佳，其最小反射率為- 31 . 59db ，有效頻寬最小為2 . 31ghz 。分享友人