線網層率 的英文怎麼說
中文拼音 [xiànwǎngcénglǜ]
線網層率
英文
ply-rating-
For this purpos, from the point of the log geology, aimed at the actuality of the current fractured reservoir log geology interpretation and evaluation, based on synthetical analysis of the current domestic and foreign fruit of fractal dimension investigation of reservoir fracture, using the method and technique of fractal dimension, through the further discussion of the fractal dimension characteristics of m index and n index in the log interpretation archie model in a sample way and through the theoretic reasoning to the fractal dimension dfa and m index of fractured reservoir interval ' s log curve, according to the geophysical signification of the fractal dimension dfa of fractured reservoir interval ' s log curve shape : the more complicated the change of the curve shape is, the larger the its dfa value is, then the more complicated space structure of fracture and pore, then the higher value of m index of space structure of fracture and pore, and so on, the text propounds an improved method, based on box dimension, of covering log curve with scale grid, and by programming computes the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, then further puts this technique into application investigation, and makes analysis of application effects in the reservoirs located in l area of qx oil field from three aspects : 1. the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, which are derived from computing, is used to identify reservoir type by crossplotting m index with the product df _ acrt of fractal dimension of acoustical wave log curve and restivity log curve and by experiential discriminance plate of reservoir type in l area of qx oil field
因此，對該區裂縫性儲集層的類型識別、孔滲特徵的測井地質解釋以及儲層裂縫的發育和分佈規律進行深入的研究便成為本文研究的出發點。為此，本文從測井地質的角度，針對當前裂縫性儲層測井地質解釋與評價的現狀，在綜合分析當前國內外儲層裂縫的分形分維研究成果的基礎上，利用分形分維方法和技術，通過對archie測井解釋模型中的m指數、 n指數的分形分維特性的深入淺出的論述以及裂縫性儲層段測井曲線分維d _ （ fa ）與m指數的理論推導，根據裂縫性儲層測井曲線形態分維值的地球物理意義? ?曲線變化越復雜，則其分維值d _ （ fa ）越大、裂縫孔隙空間結構越復雜、裂縫孔隙空間結構指數m值越高等特徵，提出了改進的基於盒維數的測井曲線網格覆蓋法，編程計算了裂縫性儲層段常規測井曲線（如聲波和電阻率曲線）上分形分維值及其m指數值，進而從以下三個方面對qx油田l區塊的裂縫油藏進行應用研究，效果十分理想： 1將計算得到的可變的m指數與聲波和電阻率分維之積df _ acrt進行交繪，採用儲層分維值分類技術統計分析這些參數變化的規律，並結合qx油田l區塊儲層類型經驗判別圖版，從而實現qx油田l區塊下白堊統的裂縫性儲層的類型識別。Evolving the underlying networks to support a mass market, however, presents a number of challenges : spectrum is a limited resource ; cdma standards have sub - optimal spectral efficiency ; layered 3g network architectures are not conducive to low - latency services ; and capacity - enhancing smart antenna or multiple antenna systems have been disappointing
但開發基本網路以滿足廣大市場，仍面臨幾大挑戰：頻譜資源有限、 cdma標準的光譜效率未達最優、分層3g網路架構未能實現即時服務、及容量增大的智能天線或多天線系統仍不盡人意。Because of the unique issues in the networks, including mobility - induced disconnection, network partition, high out - of - order delivery ratios and channel errors, the congestion control and the error recovery in the network is challenging. in this environment, the interaction between tcp and mac layer protocols, the affection of route protocols on the performance of tcp and the particular congestion control and error recovery mechanism are first discussed. then a particular transport layer protocol scheme based on the non - feedback mechanism is presented, with emphasis on the analysis and simulation of the key parameter
文中主要討論了兩種不同網路結構中的無線tcp協議改進方案，其一在最後一跳為無線鏈路的網路環境中，針對基本tcp擁塞控制機制存在的缺陷，文中在現有解決方案的基礎上提出一綜合性的方案，其中包括無線鏈路的高誤碼率和連接斷開問題的解決，並重點對方案中出現的交叉層問題進行分析和模擬；其二，考慮的是分散式網路（ adhoc ） ，在文中較為詳細的分析了tcp和mac層機制間的相互作用、路由協議中造成tcp性能降低的因素、 adhoc網路中應採取的特殊擁塞控制和差錯恢復機制，在此基礎上提出了一種採用非反饋機制的解決方案，重點對方案中的關鍵參數進行分析和模擬，分析和模擬結果表明此機制可在很大程度上提高adhoc網路中tcp的性能。In the meanwhile, we build a complete simulation model of layered wireless self - organizing routing network and verify feasibility of network architecture and key technologies, including operating mode of wireless interface, addressing and routing in lwsrn we study the performance of wsrn in terms of routing overhead, packet delivery ratio, and the communication capability, and compare these result with that of ad hoc network
同時，構造了完整的分層結構的無線自組織路由網路模擬模型。驗證了網路體系結構和關鍵技術的可行性，包括無線通道工作方式、網路編址技術、網路路由過程。並通過模擬分析了分層結構的無線自組織路由網路的路由負載、網路數據到達率和網路通信容量。The main purpose of this paper is to investigate the application of the neuron network for the daily exchange rate forecasting. generalized cross validation is introduced to determine the number of nodes of the hidden layer, several well known time series forecasting methods are also compared with the nn method in this paper
討論了人工神經網路在金融匯率預報中的應用。其中介紹了廣義交互驗證generalized cross validation法如何應用於確定神經網路中隱層的個數，並用實例說明了該方法甚至對復雜的非線性函數也可以得到很好的逼近。Thirdly, some key technologies of optical layer protection such as fault monitoring, location, switching corporation, protection switching time were studied in chapter 3, a method of optical power monitoring for primary path and otdr monitoring for protection path was provided
隨后研究了光層保護的網路故障監測、倒換判椐、故障定位、倒換協調、保護倒換時間等問題，提出了主通道光功率監測、備用通道背向散射曲線監測的故障監測方法。4. analyzed two types of spread spectrum ( dsss and fhss ) approved by the fcc based on the characteristic of phy layer ; then analyzed the characteristic and technology of the cck modulation and at last put forward an improved cck scheme that will increase the data rate of wlan to 16. 5mbps
針對物理層的特點，討論了無線局域網的兩種擴頻技術? ? dsss和fhss ，分析比較了兩者的性能特點和適用的范圍，並探討了一種支持高數據數率的cck調制方式以及使速率能達到16 . 5mbps的cck改進方案； 5It can be used to create the model data file for the seismic forward modeling semi - automatically. thus, the two primary difficult problems of low efficiency and accuracy have been solved very well. 2. graphic and digital image processing technique are introduced into geological modeling, and some kinds of arithmetic are presented, based on which fast model input for ray tracing and wave equation forward modeling have been both achieved
首次建立了獨立於大型地震勘探專業軟體的開放式構造地質模型輸入系統，開發了針對于射線層狀結構模型和網格化波動方程模型的輸入軟體，大大地簡化了模型輸入的過程，極大地提高了構造地質模型的輸入效率，解決了以往模型輸入精度和效率不高的兩大難題。According to the fact that power factor of low voltage power networks is very low in china and field bus technology is developing in the world, in order to enhance power factor of low voltage power networks, on the basis of central transmitting and controlling information among every compensation equipment, the author of this dissertation studies systematically the design principles of power factor dynamic compensation system. based on analyzing structure of control system at present, the author of the dissertation puts forward a distributed completely and multi - layer structure framework based on field bus technology and builds a power factor intelligent dynamic compensation system. the functions of compensation unit, intelligent node, host computer, are presented
根據目前低壓電網用電負載功率因數偏低和國內外現場總線技術的應用現狀，立足於提高交流電機的功率因數，基於將每個補償裝置進行集中監控、信息集中傳遞的思路，本文作者在分析現有的控制系統體系結構的基礎上，提出了基於現場總線技術的全分散式多層控制系統的體系結構，構建了功率因素智能動態補償系統；對補償執行單元子系統、智能節點子系統、上位機子系統三部分進行了功能分析。Refined grids were utilized in a large - eddy simulation model for obtaining high - resolution planetary boundary data and analyzing surface layer turbulence. simulation results showed that refined meshes reduced turbulent contributions of subgrid scales, sensitivity of simulation results to sgs parameters decreased, and features of the whole boundary layer were explicitly resolved better. results also revealed flux - profile relationship correctly in surface layer and a good agreement of turbulent velocity characters with observation. therefore, it concluded that the les method was able for simulation of surface layer flow and turbulence, and might be used for further applications
採用加密網格的大渦模式獲取邊界層風溫場的高解析度模擬結果，並據以分析近地面層大氣的湍流特性。結果表明，較小的網格尺度使次網格湍流貢獻率大為降低，模式計算結果對次網格參數的依賴性減小，邊界層整體特徵得到更好的反映。同時，模擬出的近地面層通量廓線關系及湍流速度特徵與實際觀測結果吻合甚好，表明模式具有反映近地面層平均運動和湍流特性的能力。This paper describes a reconstructive algorithm which is based on network theory for electrical capacitance tomography technic. there are twelve electrodes in the system. the permittivity distribution of flow with two components within a pipeline is reconstructed. assume the permittivity distribution of the region to be reconstructed. then whole measured area is discretized into a network composed of capacitance. the measurement circuit which contains a pair of source electrode and detecting electrode is taken as a four - terminal network. the across admittance of the four - teminal network is proportional to the capacitance between the source electrode and the detecting electrode. modify the distribution of the permittivity according to the difference between the calculated capacitance and measured capacitance. the experimental results show that this algorithm is effective and can coverge
本文描述了一種用於兩種成份的流體成像的12電極電容層析成像新方法.該方法基於電路的網路理論，首先對重建區域假定一個介電率分佈，用電容網路作為離散化模型，將每一個源電極和探測電極對組成的測量電路看作一個四端網路，該四端網路的跨導與源電極和探測電極之間的電容值是線性關系，這個電容值和測量得到的電容值之間存在誤差，根據這個誤差對修正介電率分佈.通過對不同介質分佈作的模擬實驗結果，證實了該演算法是有效的，收斂的Providing a novel access scheme for solving “ last mile ” wideband access and global person communications. in wireless optical code multiple access ( w - ocdma ) network, media access control ( mac ) is a key issue, which determines network performance 、 bandwidth efficiency 、 complexity and cost of terminal
無線光碼分多址（ w - ocdma ）接入網中，數據鏈路層的媒質接入控制技術（ mac ）至關重要，它直接影響網路的性能、帶寬利用效率、終端設備的復雜度和成本。With the rapid development of wireless communication technology and computer technology ， people wish to get reliable data communication service any time and any where. traditional network can not supply communication service if the whole network need to move because the network devices are fixed by wires and can not move. so, ad hoc network comes. it can provide mobile data communication service compared with traditional network. ad hoc is a network with plat structure and all the nodes is equal. all the nodes need provide relay. but not all the nodes will provide relay and the performance of plat structure is poor in large scale. so the wireless mobile self - organized network adopts a two - level structure by referencing the cell mobile communication system. wmsn uses wireless routers to construct network. it can provide wireless access, relay services to users
考慮到不是所有的站點都願意提供中繼服務及平面結構的局限性（在網路規模較大時性能會很差） ，本課題的無線移動自組織網路參考了蜂窩移動通信系統的特點，是一種具有兩級結構的網路。使用專門的無線設備? ? 「無線路由器」構成具有用戶無線接入、無線組網和路由功能的無線互連網路，為移動用戶提供無線接入、路由和中繼服務。 ieee802 . 11b可以提供很高的通信速率，可以提供很好的接入性能，並且支持ieee802 . 11b協議的設備正成普及的態勢，因此成為我們所選擇的鏈路層協議。This article discusses the modified frame rate control algorithm based on tmn11 and the modified macroblock - layer rate control algorithm
論文重點討論了無線網路中基於tmn11的改進型幀率控制演算法及改進型宏塊層碼率控制演算法。The primary works and innovations of this paper include but not limited to : ( 1 ) considering the nonlinear, time - varying and uncertain characteristics of networks, a new active queue management ( aqm ) algorithm, i. e. nnpc - aqm was proposed based on predictive control theory, which requires less model accuracy. in order to realize fast control, a predictor was constructed using two - layer linear neural network to predict the future queue length, and a controller was composed using two layers of nonlinear neural network to optimize the next control volume, i. e. drop probability
本文研究的主要內容及創新點如下： （ 1 ）針對網路的非線性、時滯、不確定特點，結合預測控制理論提出一種新型主動隊列管理（ aqm ）策略nnpc - aqm ，該演算法基於單值預測控制思想，為了實現快速控制，採用兩層神經網路構造預測器，估計未來時刻隊列長度；採用兩層非線性神經網路組成控制器，實現對下一步丟棄概率的優化。To avoid a terminal occupy channel excessively, access admission - base m - dcf ( aa - mdcf ) and its suggestion model are proposed. by combining subnet bandwidth management and ack mechanism in mac layer together, aa - mdcf can reduce the send rate of ack frame and prevent a terminal consuming wireless resource excessively
為防止一個終端過多地佔用無線資源，提出了基於接入允許的改進型dcf : aa -入idcf ，通過子網帶寬管理sbm和mac層確認機制的結合，降低ack的發送速率，限制一個終端對無線資源的過度消耗，並給出了建議的實現模型。Therefore, fiber gratings have numerous applications in almost all the realms of optical fiber, especially in wavelength - division multiplexing ( wdm ) all - optical networks. this dissertation presents a detailed study of the following three types of fiber gratings : fiber bragg grating fabricated with cladding mode suppression fiber, linearly chirped moir fiber grating, and long - period fiber grating with rectangular index modulation
本文以目前在wdm全光網中有良好應用前景的三種類型的光纖光柵（用包層模抑制光纖製作的光纖布拉格光柵、線性啁啾moir光纖光柵、矩形折射率調制型長周期光纖光柵）的理論和設計為研究內容。Furthermore, this paper exploringly studies an 802. 1 la high - speed wlan with the 54mbps data rate, and presents a sort of time synchronization and frequency offset estimation method based on the frequency domain auto - correlation of the unique preamble training sequence of 802. 11 plcp frame ; the method have the high time precision, the wide frequency estimat ion range and short convergence process ; and moreover, it can applied to other frame communication system
另外本文還對最高傳輸速率為54mbps的802 . 11a高速無線局域網系統進行了探索性研究，討論了ofdm調制技術在無線局域網中的應用；結合802 . 11a物理層數據幀結構特點，提出了一種基於前導訓練符號序列的頻域自相關時間和頻率同步方法，此方法具有定時精度高、頻偏估計范圍寬和同步建立迅速等特點，也適合於其它幀通信應用場合。Information technology - telecommunications and information exchange between systems ; local and metropolitan area networks ; specific requirements - part 15. 3 : wireless medium access control and physical layer specifications for high rate wireless personal area networks
信息技術.系統間遠程通信和信息交換.局域網和城域網.特殊要求.第15 . 3部分:高速率無線個人區域網用無線媒體訪問控制和物理層規范Information technology - telecommunications and information exchange between systems ; local and metropolitan area networks ; specific requirements - part 15. 4 : wireless medium access control and physical layer specifications for low - rate wireless personal area networks lr - wpans
信息技術.系統間遠程通信和信息交換.局域網和城域網.特殊要求.第15 . 4部分:低速率無線個人區域網用無線媒體訪問控制和物理層規范分享友人