自發傳輸 的英文怎麼說
中文拼音 [zìfāzhuànshū]
自發傳輸
英文
spontaneous transmission-
After elaborating the principle of an 802. lib key modulation scheme - complementary code keying ( cck ), this paper proposes and realizes a hardware circuit solution of 802. 11b pcmcia wlan interface card, which can reliably offer a maximal 11mbps data rate and freely switch within 14 working channels in 2. 4ghz frequency band
接著在詳細闡述了802 . 11b協議核心調制技術?互補碼鍵控（ cck ）的原理的基礎上，本文提出並實現了一種峰值傳輸速率為11mbps的802 . 11bpcmcia高速無線網卡的硬體電路設計方案，在2 . 4ghz頻段該網卡可在14個工作通道上自動切換，實現高速突發數據的可靠傳輸。In general, ba stars belong to binary system, and their heavy - element overabundances are due to the accreting material from the companions ( the former tp - agb stars and the present white dwarfs ). carrying out a series of monte - carlo simulations, the changes of orbital elements of binaries are recalculated for wind accretion scenario of the total angular momentum conservation
研究表明，鋇星應該屬于雙星系統，其重元素超豐來自雙星吸積，它的伴星已經經歷了s -過程核合成，而且由在以前發生的同其伴星（以前是agb星，現已演化為白矮星）的質量傳輸過程中，從伴星那裡獲得了富含重元素的物質，這樣造成了鋇星的重元素超豐。Based on this algorithm, an end - to - end rate - based transport protocol named the trinomial protocol is developed, in terms of individual performance and capacities, the trinomial protocol provides much better transmission service than current tcp or udp protocols : it minimizes transmission delays and delay jitter by omitting re - transmission ; in the steady state, its transmission rate is smooth ; and when available network bandwidth increases / decreases, it adapts to the change quickly
基於該機制，開發了基於速率的點對點三項式協議。在個體性能和容量方面，三項式協議提供了比當前tcp和udp協議更好的傳輸服務；在穩態，它的傳輸速率是平滑的，並且當可用的網路帶寬增加或減小時，能迅速而自適應地進行改變。This specific view becomes the tip of our designing ; the energy consumption has great relation with the rf module, which is breakpoint of the ebra ( energy - based radius self - adjust wireless sensor network protocol ). based on the facts between the energy consuming and the rf transferring radius, the ebra protocol is designed and implemented under the visual c + + 6. 0 ide, which switches its running mode with the energy consuming of nodes, so that meet the goal of energy saving of the nodes in wsn
本文正是從這一視角入手，根據結點能量消耗與無線傳輸發射半徑間的關系，設計並實現了一種基於能量的半徑自適應傳感器網路路由協議，使得節點能夠根據自身剩餘能量的狀況對節點的運行模式進行控制，同時對無線模塊的收發半徑進行動態調整，達到節能目的。Section ii describes the design approach and implementation of speech module on mcf5249 coldfire core. the speech codec optimizes g. 729a codes and added voice activity detection of g. 729b to save bandwidth ; the implementation of acoustic echo cancellation uses nlms algorithm and it can reduce echo though designing adaptive fir filter and speech detector ; the dtmf and cpt generate signal using two second order digital sinusoidal oscillators and detect signal by picking up the frequency information. but only get the frequency information is not enough in cpt detector, this thesis introduces a method
其中對語音編解碼器的設計採用優化g . 729a代碼達到設計要求，並在此基礎上加入g . 729b的靜音檢測模塊，以進一步降低網路傳輸帶寬;對回聲消除器的設計採用nlms演算法，通過設計自適應fir濾波器和語音檢測器達到回聲消除目的;對雙音多頻設計，信號發生端採用構造靜態參數表並通過二階正弦振蕩器產生信號，信號檢測端提取頻率信息以檢測信號;對呼叫進程音設計，除了類似雙音多頻的信號發生及頻率檢測設計外，還需要檢測信號持續時間，作者設計了一種基於匹配狀態表的方法以檢測信號持續時間。There are many decoding schemes for convolutional code, such as sequence decoding algorithm, fano algorithm, viterbi algorithm. but in fact, what ' s used widely is viterbi decoding algorithm. the viterbi decoding algorithm, proposed in 1967 by viterbi, is a decoding process for convolutional codes in memory - less channel, which takes full advantage of convolutional codes. since viterbi algorithm is proposed, it has obtained rapid development whether in theoretics or in practice and been applied to all kinds of data transmission systems, especially to digital wireless communications and deep space communications
卷積碼的譯碼演算法方案有很多，如序列譯碼演算法、 fano演算法、 viterbi演算法，但是真正大規模應用的還是viterbi演算法。 viterbi譯碼演算法是1967年viterbi提出的，它是一種對無記憶通道卷積碼進行譯碼的演算法。它充分發揮了卷積碼的特點，因而自viterbi演算法提出以來，無論在理論上還是在實踐上都得到了極其迅速的發展，並廣泛的應用於各種數據傳輸系統，特別是無線通信和衛星通信系統中。This paper mainly focuses on the noise limiting by means of the direct sequence spread spectrum ( dsss ) and the analysis of the transmission performance of the plc and some digital modulation technology. the contents of the paper is as follows : 1 ) the technical feasibility is proved after simulating noise limiting principle of dsss by means of systemview, the simulation software ; 2 ) a kind of band pass filter ( bpf ) is realized according to the requirement of filter and the principle of butterworth approximation, which satisfies the index of performance of dsss. 3 ) the low voltage plc system includes the sc1128, the specific modulation / demodulation ic, the bpf filter and other circuit components, furthermore, the control function of system is realized by means of the personal computer and the microcontroller
本課題在對低壓電力線的傳輸特性和數字調制技術進行分析的基礎上，將通信理論中的直接序列擴頻技術（ dsss ）用於解決低壓電力線通信的干擾問題，主要研究內容如下： （ 1 ）用通信模擬軟體systemview對dsss技術的通信和抗干擾原理進行模擬分析，分別對時域和頻域下採用dsss技術前後接收信號的頻譜進行分析，驗證dsss技術在本系統中的可行性； （ 2 ）由dsss技術對濾波系統的要求，根據濾波理論分析了巴特沃思型濾波器的逼近原理並設計了合適的濾波電路； （ 3 ）用調制解調晶元sc1128和自行設計的濾波器加之輔助外圍電路，構造出低壓電力線載波通信系統，並採用atmel公司的單片機設計了接收和發射電路的微控制器； （ 4 ）分別對採取抗干擾措施前後輸入和輸出信號進行對比實驗，並對結果進行分析，驗證了dsss技術對干擾信號的抑制作用。Bluetooth technology, a new wireless technology in ism band, can freely transmit. data and voice in short distance. the application to intelligent home is one of the most important applications of bluetooth, and it drives bluetooth ' s development
藍牙技術，作為一種在2 . 4ghz無線基礎上新發展起來的電纜置換技術，由於其全球統一的標準性、數據和語音傳輸方面的優越性、自動組網能力、低功耗、低成本和高安全性等特點，已經得到人們的廣泛認同。5. in the background of the design and implementation of network management system for the local network of china mobile, we have analyzed and designed detailedly the key technique, approach and software architecture of a practical network management system based on starbus, which use mhnm architecture, the scheme of managed objects arrangement, saa, gpa and practical skills achieved when we developed china post and china broadcast and tv network management systems. in the end, we summarize the main achievement of this paper and state some further work in the future
5 .以中國移動通信網本地網網管系統設計為背景，以我們先後開發中國移動通信網本地網網管系統、廣電有線電視傳輸網網管系統和郵政網網管系統的實踐為基礎，結合多級網路管理體系結構ml江nm 、管理信息的組織策略、提取管理信息的自適應演算法saa和組預取演算法gpa ，在基於corba的分佈計算軟體平臺starbus上，詳細分析了基於corba技術實現實用的異構網管系統集成管理的關鍵技術、途徑和軟體結構。The company announced it ' s shutting down the nation ' s largest producing oil field after discovering corrosion in a transit pipeline system
在發現其傳輸管道上的腐蝕后，該公司宣布停止自美國最大產油地的石油運輸。It ' s well known that the project documentations " storage and management have an very important effect on the development of all kinds of project, and as the information age is coming, network technology has been applied to this procedure gradually. this article mainly introduces the study and realization of a internet - based project documentation storage and management system which application programming frame is built with delphi6. 0 and sql server2000. based on the tcp / ip protocol, the system try to establish a c / s model with connection - oriented, dependable stream sockets and multithread technology to complete some especial data communications by networks, such as the files of project, directory of user, all self - defined commands or messages and their parameters, and so on
本文所研究的《基於internet的項目文檔存儲管理系統》通過delphi6 . 0和visualc + + 6 . 0相結合的開發平臺，結合sqlserver2000 ，將client server模式的數據庫技術和windowssocket網路通信技術進行集成，遵循tcp ip協議，同樣採用c s結構運行於internet ，通過服務器將處于各個不同物理位置的客戶機連接起來，形成一個交流平臺；其中，引入了目前國際上流行的先進的安全管理控制方法? ?角色控制理論對用戶進行權限分配，使擁有相應角色的人具有相應權限；然後系統自動根據組織部門或用戶的設立在服務器端生成相應的網路「虛擬文件櫃」 ，使擁有相應權限的人可以對相應文件櫃中的文檔進行整理；再通過多線程技術和windows套接字通信機制在tcp ip協議上實現了單個文件及目錄的傳輸。It includes : dynamic show of technics flow, real time data acquirement and show, history data save and print, fault alarm, etc. the plc control system mainly accomplishes the wastewater technics flow control, harmonizes the logical relationship among local intelligent control instruments and transmits the state of each local equipment to the industrial computer simultaneously, the plc control station receives the control commands from the industrial computer ; the local intelligent units take charge of the correlated parameters measure, disposal and control, and it will transmit the related parameters to the computer, etc. in this thesis, introduced municipal wastewater treatment technics, the integrated application program development of computer, the design method of plc control station, the communication between plc control system and computer, and the network of wastewater treatment with profibus - dp was also discussed
上位計算機主要實現遠程監測和管理功能，具體包括:工藝流程動態顯示、實時數據獲得及顯示、歷史數據存儲與列印、故障報警等功能plc控制系統主要完成工藝流程式控制制以及協調現場各智能儀表之間的邏輯關系，將現場各設備的運行狀態通過通訊網路傳輸到上位計算機，並接收上位計算機的控制指令;現場各智能儀表單元負責各相關參數的監測和處理、控制，並將有關參數送往上位監控計算機進行處理、保存等。本文以莎車污水處理項目為例，介紹了城市污水處理工藝、上位監控計算機的綜合應用程序開發、城市污水處理自動控制系統plc控制站的設計和採用profibus系列中廣泛應用於現場設備的profibus - dp總線。In a tdma network, multiple users share the common medium ( or channel ) and bandwidth but different intervals of time. in case of the burst mode, the carrier of the modulated signal needs to be synchronized in a very short time. the common approaches such as a costas - loop and so on are no longer suitable any more
在一個時分多址（ tdma ）通信網路中，多個用戶通過不同的時間段共享一個傳輸線路（或者通道）的帶寬資源，每個用戶只能在分配給自己的時間段內進行通信，這種突發方式信號的解調要求載波恢復要在很短的時間內完成，我們以往在連續信號解調器中採用的costas環等方法很難適應這種要求。It must be appreciated and accepted in telecom market, due to its advanced technology reliable performance and high cost performance. a series of technical key problems have been solved, mainly f an overal exhaustive design of the 128k switching network system was presented based on 4k net - chips, with our own intellectual property a 3 level 64k switching net was successfully designed, in which the tlevel consists of l6 4k net - chips and the s - level consists of a self designed single vlsi fpga chip with 560 pins. an optical net interface and an optical multiplexer were designed to carry out the voice transmission and distribution of l28, 000 users
在研究開發過程中，解決了一系列的技術關鍵問題，主要有：提出了基於有自主知識產權的4k網片的128k網路系統的總體設計方案；研究設計了tst三級結構64k交換網，其中t級含有16片4k網片， s級由自行設計的、 560pins的、單片大規模fpga實現；研究設計了雙機雙網雙余度的通信控制處理器系統，實現了對用戶呼叫、 tst各級網路的控制、報警等各種功能；研究設計了光網介面oni和光復用器omux ，實現了12 . 8萬用戶話音的傳輸分配。The article illuminates mainly two segments color - separation model based on three dimensions, gives a model conception on a knowledge base of unification technology and analyse and design digital prepress system from the whole on the problem of systemic requirement analysis. second, the article brings forward new data compress method based on memory stream and sets up new data structure to realize undo and redo methods based on analyzing all kinds of datas referred to on systemic based construction. because printing and dyeing cad system deals with many arithmetics on graphics ans image and production technics, the article illuminates vector conception, expatiates gray graphic vectorization and brings forward to graphic component ' s conception to enhangce the systemic stability and manipulating speed and improve graphic transmission
在印染cad系統的需求分析問題中，結合目前印染行業的發展和實際cad系統的整體構架，著重闡述了基於三維空間的二段法分色模型，提出了一體化工藝知識庫這個模型的概念，對數字印前系統做了整體的分析、設計在系統的底層架構問題上，著重分析了cad系統涉及到的各類數據，提出一種新型的基於內存流的數據壓縮方法，同時設計了自己的數據結構，用以實現系統的undo 、 redo操作，由於整個系統涉及眾多的圖形圖像演算法和實際工藝，為了提高系統的穩定性和操作速度，以及增強圖像的網路傳輸功能，在部分演算法中採用了矢量的概念，著重講解了灰度圖像矢量化，並且提出了圖像組件這一嶄新的概念。Visual basic for applications provides a powerful infrastructure for developing and deploying a wide variety of customized solutions that solve everyday business requirements, including advanced e - mail messaging, appointment and task management ; electronic discussions ; and tracking, routing, and document library solutions
Visualbasicforapplications為開發和應用各種自定義解決方案，解決如高級電子郵件傳輸、約會和任務管理、電子討論、跟蹤、路由選擇和文檔庫等日常商務需求，提供了功能強大的體系結構。If relevant, then checks whether it is concurrent incremental maintainable or self - maintainable. if the update satisfies self - maintenance, our mechanism queries auxiliary views ( instead of querying iss ) to avoid network transmission and make the materialized view consistent with underlying iss. the update which needs to maintain the view concurrently and incrementally can be handled by polec
當收到更新后， pmdvm方法首先用相關性對其檢查，對不相關更新直接拋棄；對相關更新對其進行並發增量視圖維護或自維護機制檢查，對滿足自維護的更新通過查詢輔助視圖（而不是查詢數據源）來避兔網路傳輸和使實化視圖與底層的數據源保持一致，對必須進行並發增量視圖維護的更新由polec來處理。Before the connectting between moden and other equipments, it works at the cammand mode, the cammand that is send to moden is used to set or manipulate the mode, after the connectting between moden and other equipments, it works at connectting mode, at that time, the cammand send from the computer is send to another computer which will pass the moden and telephone line. the moden control cammand is called " at " cammand, all the control manipulation is realized by sending the ascii character to moden, after the moden received the " at " cammand, it firstly judges the cammand, secondly, it analyses and executes the cammand, finnally, it executes a response by sending back a ascii character, during the deseign of below - computer, we introduce in detail the deseign of system hardware and system software, below - computer system hardware and system software, below - computer is made up of microchip collecting and controlling system, which finish the strobe and water level data collection, display and disposal, deal with the communication with the above - computer, the microchip is the centre of data dealing with, the peripheral equipments are made up of data collecttion module, control cammand input module, display module, execute output module, and long - distance communication module
在moden控制軟體的設計中，詳細敘述了moden正常工作時的幾個重要函數：初始化函數、撥號處理函數、應答處理函數、掛機處理函數，設計並調試了四個函數的通信程序，數據機工作時存在兩種模式，命令模式與連線模式，命令模式是針對功能設置的模式，連線模式是數據傳輸的模式。當數據機未與其他設備連接時，其處于命令模式，這時候下達給數據機的指令是作為數據機本身設置或操作用的；當數據機已經與其他設備連接時，其處于連線模式，所有在此時由計算機送至數據機的信息都將經由電話線傳送到另一部計算機上。專門使用於控制數據機的指令集被稱為「 at指令集」 ，對moden的所有操作（如撥號、應答、掛機等）都可以通過給moden發送ascii字元串來實現， moden在收到at命令后，先對命令進行判斷，接著分析和執行命令緩沖區中的命令，最後以自身的ascii字元對命令作出響應。Moreover, because the model can be easily transported through internet, many scientists can share it. the work also prepares to search the idea 3d structures and screens chemical depend on object molecular. it is very important, for the work of drug design
由於其自身具有傳輸容易的特點，製作的藥物分子模型可以實現網路傳輸，用於在在internet上實現分子3d結構顯示，實現了對網路庫中活性分子的三維結構的共享，被眾多的研究者使用，為實現三維結構搜索，根據靶位的空間結構來篩選活性化合物，對藥物先導化合物的發現和分子設計打下堅實的基礎。According to the tendency of modern concrete pump deliever with far - distance and high - floor pouring, the market need a measure system provided with good automatic performance and friendly human - machine interface
現代混凝土泵送技術向遠距離傳輸、高層澆注發展，並日益走向市場化，對測量系統的要求越來越高，不但要求它具備較高的自動化程度及良好的測量性能，還要求友善的人機交互界面。分享友人