線有向圖 的英文怎麼說
中文拼音 [xiànyǒuxiàngtú]
線有向圖
英文
line digraph-
With the research development in antenna area, smart antenna, which could dynamically adjust antenna pattern in order to trace useful signals and suppress interference and noise, comes into researchers ’ sight
隨著天線領域研究的進展，一種可以動態調整天線方向圖，有效跟蹤有用信號，抑制干擾和噪聲的天線系統? ?智能天線系統，進入了研究者的視野。At first, the paper confirms singular area by singular detection, then designs a series of low - pass filters that have different templates according to the different position in finger image for a local area, at last sets up gabor filter parameters according to the characteristics of fingerprint image. the improved enhancement algorithm has a better robust, and can preserve texture structure of singular area effectively. in binary noise clearance, the paper presents an algorithm that clears the biggish white speckles and black speckles
在指紋圖像增強方面，本文針對傳統的基於gabor濾波器指紋圖像增強演算法魯棒性差以及通常會改變奇異區紋理結構的缺點，對原有演算法進行了一些改進:首先通過檢測奇異點確定奇異區，然後根據局部區域在指紋圖像中的位置構建相應取值方式的低通濾波器並對該局部區域方向圖進行濾波，最後根據指紋圖像紋線的特點對gabor濾波器參數進行設置。The support vector machine composed by least sequence and directed acyclic graph algorithm has been used in paper currency identification, shows the advantages of capability in dealing with scared samples, nonlinear and high dimensions
將次序最小優化改進演算法和有向無環圖演算法構建的支持向量機用於貨幣識別，充分發抨了支持向量機解決小樣本、非線性和高維模式識別問題的優點。In chapter 4, a simulation approach is presented, which combines the outdoor radio propagation model, the eigen - driven patterns of handset diversity antenna with two feed ports and combining schemes of receiving signals, to investigate the performance of a dual antenna handset under co - channel interference ( cci ) and multi - path fading environment
第四章首先用本徵激勵方向圖的概念來產生手機雙埠分集天線的接收信號矢量，然後將其與城市室外電波傳播模型、分集合併方式相結合，建立了分析在具有共道干擾和多徑衰落環境中手機雙天線系統的性能模型。A patch antenna with etched holes on the ground plane is also studied. the performance of the antenna at the resonant frequency is analyzed by using the fdtd method together with the pml boundary treatment. the results show that the surface waves are suppressed greatly, the bandwidth is improved and a 1 odb reduction on the sidelobe level is achieved at the 110 and 260 directions in the e plane
全面地研究了地面腐蝕周期圓孔結構的電磁晶體貼片天線在基波頻率處的性能，用fdtd方法並結合pml邊界處理技術對該天線所取得的研究結果顯示，本文設計的地面腐蝕型電磁晶體結構抑制了貼片天線中的表面波，增加了天線的帶寬，並有效地削弱了旁瓣，使天線的e面方向圖上110和260方向的兩個旁瓣被削弱了10db 。The combination of fdtd method with physical optics is also used to analyze paraboloidal reflector antenna in millimeter band. using fdtd method, we obtains precise near fields of the feed because the computing areas include all the feed structure. the current on the paraboloidal reflector can be calculated by using physical optics, and then the far field of reflector can be calculated
在毫米波拋物面天線的分析計算中，把fdtd與物理光學法結合起來， fdtd用於具有精細結構的饋源及饋電波導一體計算，得到饋源的幅度和相位方向圖，以此為依據調整饋源結構，使饋源的幅度和相位方向圖為最佳狀態。Since being purchase share of the local commercial bank such as shanghai bank and nanjing commercial bank etc, until now development to purchase share of the largest countries bank, again turns object to share - holding bank such as huaxia bank and bohai bank etc, even interest in the reform of credit cooperation bank
其中，外國金融機構參股國內銀行的范圍與路線圖正在不斷擴大。從早先主要是參股地方商業銀行如上海銀行和南京商業銀行等，擴展到參股國有商業銀行，現在又把視線轉向股份制銀行如華夏銀行和渤海銀行等，甚至對農信社改制也興趣盎然。Secondly, based on the existing international technologic analysis, two different measurement schemes are proposed. one navigation scheme uses pixels as measurements vector, and the other one uses line of sight ( los ) of object celestial body and angles from probe to object body as the measurements vector
其次，通過對國際上現有技術的分析，給出兩種不同的導航觀測方案:一是利用圖像作為觀測量的自主導航;二是利用視線方向及夾角作為觀測量的自主導航。Smart antenna has been widely researched in communication and signal processing, the adaptive beamforming algorithm is the key technique of smart antenna. it could adaptively steer the array directional pattern to form the main narrow beams with high gain in the direction of the users " signals while deeply nulling the interference signals. it is an effective way to realize the optimal receiving of the interesting signals
智能天線技術是目前通信和信號處理等領域的研究熱點，自適應波束形成演算法的研究是智能天線的一個關鍵技術，它能夠自適應地控制天線陣方向圖在用戶信號方向產生高增益窄波束，在干擾信號方向產生較深的零陷，是實現用戶信號最佳接收的有效方法。For bowtie antennas, this method can produce a better return loss in the higher frequency band than the original ones, and at the same time, the radiation pattern bandwidths of the new antennas can be broadened more or less
對蝴蝶結天線而言，應用這種方法得到的蝴蝶結天線在高頻段比原天線具有更好的反射損耗，天線的方向圖帶寬有不同程度的擴展。On the basis of the chavacteristic that the interferometric fringes have minimum gradient in the tangent direction, this paper employs the spin filtering with curved windows along the fringe tangent direction for interferometric phase images, and its feasibility and efficiency in keeping the fringe information, suppression the noise and improving the unwrapping precision are proved through comparing the different filtering methods and the corresponding phase unwrapping results
文中根據干涉條紋在切線方向變化最小的特點，利用沿切線方向的曲線窗口對干涉相位圖進行旋濾波降噪，並通過對比不同的濾波結果及相應相位解纏結果，證明了旋濾波在保持條紋結構信息，消除噪聲和提高相位解纏精度應用中的可行性和有效性。An adaptive algorithm is applied to pattern synthesis of linear arrays with mutual coupling, which is of great practical significance
應用一種自適應演算法進行天線陣方向圖綜合，把陣元間的互耦考慮在內，具有很強的實際意義。Linear array can only provide an azimuth scan ranging from 0 to 180 degree, while circular array from 0 to 360. by means of recurring moving array excitation, circular array controls the beams ’ orientation simply and neatly, creating a perfect pattern in azimuth and an ideal pattern in pitch
線陣只能有180的掃描范圍，而圓形陣列能夠提供360方位角，通過循環移動陣列激勵，簡單而靈活地操縱波束的方位，能夠在方位上產生沒有方向性方向圖，而在俯仰方向上也有一個理想的方向特性。By using the matrix representation of a digraph, some results about the index of convergence and period of a line digraph are obtained
摘要采有有向圖的矩陣表示，得到了線有向圖的冪斂指數和周期的有關結果。Based on the results, chapter 3 obtains the necessary and sufficient conditions of the positive line a - doubly diagonally dominant matrices being non - singular m - matrices, by means of the nature of the associated digraph of matrices irreducible and weakly irreducible matrices. the results obtained simplify the process of judgment, only making us to check the related quantity involved in the circuit of the associate digraph of matrices
第三章在已有結果的基礎上，藉助于矩陣的伴隨有向圖、不可約以及弱不可約矩陣的性質，得到了正線-雙對角占優矩陣為非奇異m -矩陣的充分必要條件，所獲結果簡化了判定過程，只需要對矩陣伴隨有向圖圈中所涉及到的相關量進行驗證即可。Because of the difference in environment, energy and process data, this paper uses analytic hierarchy process to build process planning evaluation model to add the relative efficiency of data. according to the result of relative index, an optimal green process planning approach is produced. the directed graph of process planning is built based on graph theory and the improved dijkstra algorithms is put forward to search the optimized process route
由於環境、能源及工藝數據標準的不一致，為了增加數據之間的相對有效性，本文引入層次分析法，建立了工藝決策層次評價模型，通過對相關指標的計算，得出了相對綠色的工藝決策方案：引用圖形理論的基本原理，建立加工方案有向圖網路，並提出改進的迪克斯特拉演算法求解最優加工路線；最後給出綠色capp系統的原型框架和具體實現。Firstly, we study some models which are often used in reconstructing gene regulatory networks, weighed matrices model, boolean networks model, mutual - information networks model, linear combination model, directed graphs and undirected graphs, bayesian networks model and analyze the strengths and weakness of each model by discussing each model ’ s details
首先，我們探討了用於推斷基因表達調控網路的一些常用模型，加權矩陣模型、布爾網路模型、互信息關聯網路模型、線性組合模型、有向圖和無向圖以及貝葉斯網路模型。逐個分析了每種方法的優缺點。This paper consists of two chapters : chapter i is about digraph theory and chapter ii is about infinite - dimensional linear system theory
本文分別在第一章與第二章討論有關有向圖與無窮維線性系統的具體問題。In this paper we deal with two aspects of applied mathematics, one is digraph theory and the other is infinite - dimensional linear system theory
本文將研究兩個方面的內容：有向圖理論與無窮維線性系統。這兩個方面是應用數學中的兩個非常重要的研究領域。Proposes a new algorithm for estimating the vector channel and the optimum beamforming weights. studies its tracking performance under realistic channel conditions
通過分析和天線方向圖模擬，證明新演算法在收斂速率和復雜度上有較大改善。分享友人