時域方法 的英文怎麼說
中文拼音 [shíyùfāngfǎ]
時域方法
英文
time domain approach- 時 : shí]Ⅰ名1 (比較長的一段時間)time; times; days:當時at that time; in those days; 古時 ancient tim...
- 域 : 名詞(在一定疆界內的地方; 疆域) land within certain boundaries; territory; region
- 方 : Ⅰ名詞1 (方形; 方體) square 2 [數學] (乘方) involution; power 3 (方向) direction 4 (方面) ...
- 法 : Ⅰ名詞1 (由國家制定或認可的行為規則的總稱) law 2 (方法; 方式) way; method; mode; means 3 (標...
- 方法 : method; means; way; technique; process; procedure; plan; device; recipe; fashion; tool; maneuver
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Abstract : considering the second nearest - neighbor interaction and cubic, quartic anharmonic interactions simultaneously, we employ the multiple scales method combined with a quasidiscreteness approximation to calculate the lattice vibration. it is shown that the kind of nonlinear chain exhibits envelope soliton, envelope kink and envelope antikink soliton. these results can also be used to explain the experimental phenomena that the kink amplitude of the self - localized structure is determined only by the intrinsic properties of its lattices
文摘:同時考慮次近鄰諧振相互作用和三次方、四次方非諧相互作用,利用多重尺度結合準離散近似方法去計算晶格振動行為,發現一維非線性點陣中存在包絡孤子及正扭結型包絡孤子、反扭結型包絡孤子,解釋了自局域結構的幅度只取決于點陣中的固有參數的實驗現象Dendrochronology a method of archaeological dating by the annual rings of tree, used when the lifespans of living and fossil trees in an area overlap
樹木年代學:在一定的區域內當生活樹木以及化石樹木的壽命有重疊時,通過樹木的年輪來推測考古學年代的方法。So it is initiative and instructive for the future application of the temporal interferometry on the analysis of the vibration. in the study of the dynamic mechanical behavior of the ballistite material, the material ' s creep curves and the creep velocity curves are successfully obtained using tspm, and whole field displacement distributions
將時間序列散斑干涉計量方法引入材料蠕變特性的研究在國際上尚屬首次,該研究對于將來材料力學性能的研究又提供了一有力的分析工具,並為以後該領域的研究提供了有力的理論和實驗依據。Time - domain method for vortex - geophone ' s parameters test
渦流檢波器參數測試的時域方法研究Meanwhile, the method can be easily popularized. apart form the real estate industry, it can be applied to multi - project risk decision - making in various economic scopes
同時,該方法具有較強的推廣性,除房地產外,還可以運用於很多經濟領域中的多方案風險決策。A new method is presented. the travel time, including the time delays associated with overland folw pathways, is obtained. it is expected that the hillslope velocity and the stream velocity are different, and different equation is used. in the method, the fact that velocity increases going downstream in river systems is taken into account. after the travel time of each cell being calculated, the frequency distribution of the times of arrival of individual water droplets at the catchment outlet - giuh, is obtained
提出了一種匯流時間計算方法,匯流時間中包括坡地漫流時間和河道匯流時間。方法中坡地單元的匯流速度與河道單元的匯流速度採用不同的計算公式,同時考慮流速沿河道向下游的變化。流域中每一個網格單元的匯流時間得到后,將其看作隨機變量,進行統計分析后,得到匯流時間的頻率分佈? giuh 。Compared with the traditional methods of artifacts elimination, ica, a kind of spatial filter, does not be restricted by the case of spectrum overlapping, and have a good reservation of useful detail signals
此外, ica這種空間濾波器不受信號頻譜混迭的限制,消噪的同時能對有用信號的細節成分做到很好的保留,很大程度上彌補了時頻域方法的不足。In general trust region method, a trial point is accepted as a new iterate and the procedure is repeated if the true reduction achieved by the objective function at this point is comparable with the reduction predicted by the quadratic model
考慮到在一般的信賴域方法中,當目標函數沿該搜索方向的實際下降量和預計下降量擬合得比較好時,則由該搜索方向得到新的迭代點並調整信賴域半徑。This paper analyzes and compares the computation and memory requirement between the two method of estimating doppler center in time domain and frequency domain
本文分析比較了時域與頻域方法估計多普勒中心對運算量與存儲量的要求,得出時域法實現多普勒中心更適合實時系統。In chapter 3, the time and frequency method of vibration signal processing is brought out. and using these method the slag characteristic parameter is brought out
第三章利用振動信號處理的時域和頻域方法,對鋼流振動信號進行了分析處理,提取出了鋼渣特徵參數。The time - domain methods are the main trend in the development of numerical electromagnetic calculations
電磁數值計算中的時域方法是目前的研究主流。In the area of structural dynamic analysis, traditional fft and time domain method have a variety of drawbacks. so we use wavelet method to extract impulse response function of system and compare it with fft method. through a lot of simulation examples, we can see that wavelet method is superior to fft method and can obtain more accurate results
在結構動態特性分析中,本文在介紹傳統的fft方法和時域方法本身所具有的局限性的基礎上,採用小波變換的方法對系統脈沖響應函數的提取進行了研究,並與fft方法進行比較,大量的模擬結果表明,小波方法比fft方法更加優越,獲得了更高的分析精度。On the other hand, as to the time domain methods, based on lyapunov - krasovskii function method, riccati equation method, linear matrix inequality technique, along with the skills of equality and inequality transformations, the robust stabilization and robust h control problems are studied via state feedback for some kinds of uncertain time - delay systems, and delay - independent as well as delay - dependent results are obtained
時域方法方面基於lyapunov - krasovskii泛函方法、 riccati方程方法、線性矩陣不等式( lmi )技術,以及代數等式、不等式變換技巧等主要處理手段,通過狀態反饋分別研究了不確定時滯系統的魯棒鎮定及魯棒h控制問題,得到了時滯無關和時滯依賴兩種不同結果。Finally in chapter 6, the problems of boundary conditions and incident wave, as the most valuable problem of mrtd as a time - domain method, are studied. this chapter presents the simulation results of the electromagnetic propagation and its interactions with the dielectric slab and analyse of the graph of the reflection coefficient in frequency. compared with fdtd results, the numerical results, obtained using the mrtd method, show the directness and conciseness of mrtd as a time - domain method and the advantages in grid enlargement and saving computer resource etc.
最後,第六章討論了mrtd作為時域數值技術最具實際應用價值的邊界條件設置和入射波加入等問題,並給出模擬電磁波傳播過程和介質板反射系數頻譜分析,其數值結果表明了mrtd作為時域方法的直觀簡練,與fdtd方法的結果比較,顯示了其在擴大網格、節省計算資源等方面的優勢。In this thesis, author briefly introduces basic theory of fdtd method at first, and research the method for analysing fss : the finite difference time domain combined with periodic boundary condition ( pbc ) and absorber boundary condition ( abc ) becomes the accurate and efficient tools for analysing frequency selective surfaces
其中時域有限差分法( fdtd )是求解麥克斯韋微分方程的直接時域方法。本文從fdtd的基本演算法原理出發,研究了頻率選擇表面的特性分析。其中包括了fdtd方法與周期性邊界條件、吸收邊界條件相結合,形成分析各種周期性結構準確、有效的通用工具。Aim to eliminate the blur in imaging, time - frequency method are used. it can be used in imaging process as well as do with the image. at last, we analyze the image resolution and scattering ’ s anisotropy under wide - aperture imaging
針對非理想散射中心在圖像域造成的「展布」現象,應用時頻方法來處理和消除這種「展布」效應,概括出了四種時頻方法處理框圖,並討論了它們的適用性。If we want to monitor the damage of the span lattice roof structure, the wind - induced responses and identification of parameters become the important problems first of all, which also the key technique of the damage monitoring of the structure. the method of time domain parameter identification is superior to the method in frequency domain : the structural response is only needed to identify the parameters of the structure
時域參數識別方法具有頻域方法無可比擬的優點,僅僅需要結構的響應信息,便可實現結構的參數識別,尤其對于大跨空間網格結構,人為激勵往往有很多的弊端,因此,積極發展有效的時域參數識別方法,還是很有現實意義的。The used value of doppler centroid influence the imaging result very much, so it must be estimated precisely. the estimating methods contain time domain method and frequency domain method. time - frequency analysis method can be used to improve estimating precision
多普勒中心頻率的取值對成像效果有很大影響,必須精確估計,估計方法有時域方法及頻域方法,還可利用時頻分析方法提高估計精度是。The reason why the periodic solutions on some of the bifurcation branches cannot be located by using direct integration is also discussed from the viewpoint of the finite dimensional basin of attraction
此外,用時滯系統的有限維吸引域方法初步探索了為何部分理論分析預測的周期解無法通過數值法得到。Otherwise, the trust region radius is reduced and a new trial point is selected. it is possible that the region subproblem need to be resolved many times before obtaining an acceptable step, and hence the total computation for completing one iteration might be expensive. this article combines approximate trust region path and nonmonotonic backtracking strategy to solve nonlinear optimization subject to linear inequality constraints, that is, we use approximate trust region path to get the research direction by minimuming quadratical model in the trust region by employing
本文在求解線性不等式約束優化問題時,將近似信賴域路徑與非單調信賴域方法相結合,即在信賴域半徑內沿近似信賴域路徑得到一極小化二次模型的搜索方向後採用回代法避免重復求解信賴域子問題,在此演算法中當搜索方向不被接受時,就用非單調線搜索技術得到接受步長,定義新的迭代點。分享友人