node switching 中文意思是什麼
node switching
解釋
節點轉接, 節點交換-
To analyze some key technologies of optical network relative with rwa in detail, such as transmission, switching and internetworking ; to emphasize on the research of function, fabric and performance of optical cross - connection ; to carry out numerical simulations for crosstalk introduced by optical cross connect and to present measurements for suppressing it such as doubly filtering, fixing optimum decision threshold and appropriately choosing the number of multiplexed wavelengths ; 3. to research the fundamental principle and some problems relative with rwa, including the type of optical network, the type of traffic, the type of service, the survivability of optical network ; to classify and compare rwa algorithms and particularly research some dynamic rwa algorithms ; 4. to present reserved light - path and classify network resource such as used, unused and reserved status, to emulate establishment of all - optical connection in optical network through modified rwa algorithm and show effectively reducing setup time of all - optical connection utilizing reserved light - path ; to research rwa algorithms of multi - fiber network, to present new link weight functions dependent on node degree, unused fiber ( s ) per wavelength - layer and routing policies, to perform emulation of rwa based wavelength layer graph applying new link weight functions and show them make algorithms better performance and network lower blocking rate ; 5
詳細分析了與rwa相關的光網路關鍵技術，包括傳輸、交換、組網等，重點研究了光交叉連接的功能和結構、性能，對其引入的串擾進行了詳細分析，選擇恰當的器件參數進行了數值模擬，並提出了抑制措施（如雙重濾波、優化判決門限、選擇恰當的復用波長數） ; 3 .研究了光網路的r認叭的基本原理、與r認叭的幾個相關問題（光網路類型、業務類型、流量類型、光網路生存性） 、 r認人演算法的分類和比較，具體研究了幾種動態r場人演算法; 4 .研究了以全光連接建立時間為優化目標的r認認演算法，提出預置光路的概念，對網路資源進行狀態分類（佔用、未佔用、預置） ，利用改進的r認叭演算法模擬，預置光路可為部分新到的連接請求快速建立連接，從而提高網路性能;研究了以多光纖網路連接阻塞率為優化目標的r認城演算法，提出了以節點度數、每個波長分層的空閑光纖數以及路由策略決定的幾種鏈路權重函數，利用基於波長分層圖模型的并行r場人演算法模擬，利用新的鏈路權重函數使得演算法具有更優的性能，使網路具有更低的連接阻塞率。 -
Dynamic power is dominant component of the average power dissipation in cmos circuits. and the value of dynamic power is determined by node capacitance, supply voltage, clock frequency and switching activity of cmos circuits. so most low power designs are achieved by reducing one or more those above parameters
由於cmos電路的功耗與cmos電路的負載電容，電壓，時鐘頻率及開關活動性有關，因此在低功耗cmos觸發器設計過程中，許多低功耗設計技術都可以歸結到通過減小上面的參數來達到低功耗的目的。 -
This paper discussed the theory of switching - node preset optimal spwm detailedly, and got the solution of 9 waves, 13 waves, and 17 waves switching - node preset optimum spwm control strategy. furthermore, by means of raising the switching frequency, the quality of output voltage can be promoted, the resonate frequency of output filter can also be raised, which made the inverter smaller volume and lighter weight and more efficient
本文首先對開關點預置最優spwm控制策略進行了深入研究，分別求解出了九塊波、十三塊波、十七塊波等情況下的最優spwm控制的開關角，並討論了在提高開關頻率之後進一步優化輸出濾波器設計，在保障系統效率的前提下，提高輸出波形質量和減小濾波器的體積重量。 -
At present, the backbone transport network in china mainly introduced the sdh transport techniques and atm switching techniques, then the network functions and traffics are highly integrated. and the damage of transport link and / or node failures will become much more serious than that of existing networks. in addition, because of the increasing social dependence on communication systems and the growing importance of information, it is very important to study network survivability strategies, which is also one of the important criterions to evaluate transport networks
這意味著通信網，尤其是大容量的高速通信網的失效（包括節點和線路的失效）將會給人們帶來巨大的經濟損失；另外，隨著人們生活水平的提高，人們對信息傳送的質量的要求也越來越高，這使得通信網的生存策略研究顯得很迫切；況且，中國已加入wto ，電信運營的競爭日趨激烈，為了在競爭中有一席之地，各電信運營商必需提供高質量、低成本的電信服務，這進一步促使通信網的生存策略研究提上日程。 -
The ha in a computer cluster is defined that computers cooperate with each other, ie., if one node is failed, other computers can take over all tasks which are running on it originally. therefore, the entire system may still available and users are not aware of switching of node
群集系統中的高可用性是指一組計算機以一種方式協同工作，即某一個結點機出現問題，其它計算機可以立即接管其任務及它所提供的各種服務，而不會造成整個系統的不可用，用戶的感覺就像幾乎什麼也沒發生。 -
Packet switching node
包交換節點
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