路由向量表 的英文怎麼說
中文拼音 [lùyóuxiàngliángbiǎo]
路由向量表
英文
rvt routing vector table-
In this paper, based on land use maps of 1976, 1988, 2003, which were interpreted from the landsat mss / tm / etm imageries, and the map of main road, with the buffer analysis tool in arcgis 8, we studied the land use and land cover change on the two sides of the main roads in xishuangbanna, then we studied the impact of population density and the topographic factor on road effects. during the study both the comprehensive land use dynamic degree model and the land use degree comprehensive index model are taken into account, we put forward a compensatory model ? “ amendatory comprehensive land use dynamic degree model ”
由於人類活動干擾強度加大，公路效應深度不斷擴展， 1976年為5km ， 1988年為7km ， 2003年達到11km ;受自然、社會條件的影響，不同路段的公路效應存在較大差異，甚至同一路段兩側效應也各不相同。 1976年至2003年，距公路不同距離范圍內的人口密度都在增加，且距離公路越近，人口數量密度越大、增長越快，人口分布有向公路兩側聚集的趨勢。選取人口密度為大、中、小三個樣區分別分析公路效應的范圍表明，人口密度As it ' s proprietary, a large numbers of bibliography resource ca n ' t be provided to common readers of internet. along with the development of network technology, it has a instancy need to conversion marc format to the information that the browser can recognize. the language xml not only can expresses the metadata, but also can show the content of data. lt can provide individuation page layout
Marc格式是目前圖書館館藏資源的主要表示格式，由於其專用性，使得目前大量的書目資源無法通過一般的搜索引擎向internet用戶提供，隨著網路技術的不斷發展，迫切需要將marc格式的數據轉換成常用瀏覽器所能識別的信息，為大眾提供服務，可擴展標記語言xml不僅可以表達元數據，而且可以揭示數據的內容，提供個性化的頁面顯示，用xml語言對marc數據進行描述是解決這一問題的有效途徑，文章提供了marc數據的xml表示方法和實現途徑。Procreant knowledge expression and forward inference engine are adopted in the method of fault diagnosis based on expert system theory. in the fault diagnosis applying neural network theory, six kinds of improved arithmetic of back - propagation arithmetic, including gradient descent with momentum, variable learning rate back - propagation, resilient back - propagation, quasi - newton, levenberg - marquardt and conjugate gradient, are applied to diagnose the faults of electric load manage center and solid state power controller. different diagnostic results gotten by simulation are compared at last
在基於專家系統的故障診斷方法中，採用了產生式知識表達和正向推理機制；在基於神經網路的故障診斷方法中，則分別採用了bp神經網路的附加動量法、自適應學習速率、彈性bp演算法、擬牛頓法、共軛梯度法和levenberg - marquardt法對電氣負載管理中心和固態功率控制器的故障進行診斷，並對由模擬得到的不同診斷結果進行比較。All of them, what modern china experienced, stimulated the development of jiangxi modern rural market, which finds full expression in wilder circulation of commodities, the outline of circulation system, the transition from the traditional market structure to modern one, the change in productive element markets, and the embryonic from of the market mechanism and system
表現在商品流通量日益增加，商品市場流通網路初步形成，商品市場內部結構由傳統向近代演變，生產要素市場發生嬗變，市場機制開始發育，市場體系初步形成。The directional routing protocol ds _ dsr put forward by the author is the improvement of the current protocol dsr, complete routine discovery and maintenance by directional neighbor nodes routing table, source routing and directional steering. the research discovers the application of the directional antenna, compare the omnidirectional antenna can increases the networks " total throughput, obviously reduces the co _ channel interference ( cci ), multiple access interference ( mai ), enlarges the nodes " signal and interference to noise ratio ( sinr ), and because of the high gain of directional antenna can realize the communication with farther distance and less jump, end to end delay can decrease deeply, simultaneously, security of networks can be improved partially, the node energy also can be saved easily by power control
本文提出的定向路由協議ds _ dsr是基於對現有協議dsr的改進下實現的，通過定向鄰節點路由表、定向源路由和定向搜索來完成路由發現與維護。研究發現，定向天線的應用，相比全向天線可明顯提高網路的總的吞吐量，減少通道干擾、多址干擾，提高信干噪比，且由於定向天線的高增益可實現較遠距離、較少跳數的通信，減少了路由發現時間，這樣大大減小了傳輸時延，網路的整體性能得到了不同程度的提高，同時部分地解決安全問題，通過功率控制還可較容易的實現節能的目的。The result indicates that in the early days of informatization, the traffic has been increasing while the soaring of communication though it ' s very slowly, which shows that communication hasn ' t been replaced ; the degree of polarization has increased and as people being inclined to large cities ; so the degree will continue augmenting ; from people ' s recognition of information and traffic, we can see that region still plays an important roll in the city network ' s formation
結果表明，處在信息化發展初期，蘇錫常地區在通訊快速發展的同時，交通量盡管增長較慢，但一直穩定增長，並沒有被通訊所替代；蘇錫常地區極化程度增大，而且由於人們傾向于去大城市工作和生活，所以該地區極化程度將會進一步加強；人們對信息和交通的重視，反映出區位在人們出行乃至整個城市網路的形成中仍然發揮著重要的作用。Then, the thesis presents a schema based two - level associated model, which dramatically reduces the number of the candidate subscriptions. in addition, an incremental subscription matching algorithm is proposed to efficiently matching events for millions subscriptions. furthermore, since indexing is very important to the system, the indexing scheme for xml data is defined based on the containment relationship, which can be more efficient to deal with relative paths than previous methods
另外，由於在意向匹配過程中涉及大量索引問題，為此針對先前研究在處理基於相對路徑的意向表示上存在的問題，本文提出了一種基於相容關系的索引模式，利用系統抽象數據拓撲結構進行相對路徑到絕對路徑的轉換，通過基於相容關系的數字方式編碼，能夠快速確定對應結點的依賴關系，同時提出了新的路徑轉換演算法，將時間復雜度由過去的平方時間變為線性。Because there are some shortcomings on tuning the parameters of conventional pid controller, which include the difficulty to make sure the direction of tuning, the possibility to cause the crash of system and the requirement of the system ' s model parameters, a new self - tuning algorithm of pid based on wavelet is proposed in this paper, which is using some wavelet items to describe the state of system through studying the connection between the step response of system and the wavelet transform of the step response and simulating it by use of matlab
由於常規pid控制器參數調整中存在不少缺陷，如調整方向難以確定，容易引起系統崩潰，有些方法需要知道預先確定系統模型參數等。針對這些情況，本文通過研究小波變換的特點以及控制系統單位階躍響應和響應的小波變換之間的關系，在應用hatlab軟體進行了大量模擬研究的基礎上，找到了表徵系統狀態的小波指標，提出了一種基於小波變換的pid參數自調整演算法，為研究小波變換在控制領域的應用提供了新的思路。Existent search mechanisms either only find some special peers and search files in those peers so that many available peers are ignored, or scale of indices peers is proportion of scale of shared files so that indices is too large. the thesis researches those points and imports the dynamic route idea, then introduces some main amendments, the keys are as follows : 1
採用動態路由方法來捕獲網路中發生的變化，克服了定向廣度優先搜索法只搜索特徵點的缺點，採用路由表指示查找的方向，從而使得路由表的大小與鄰節點的數量成正比，而不是與共享文件數量成正比，減少了網路中的流量。分享友人