混響波形 的英文怎麼說
中文拼音 [húnxiǎngbōxíng]
混響波形
英文
waveform of reverberation-
The main research advances can be summarized as follows : ( 1 ) study the signal processing ' s performances and methods of homing torpedo system comprehensively, in order to setting up a corresponding mathematical models ; ( 2 ) analyze the ocean channel ' s effects on the work of homing system, then found some models such as target echo signal, noise ( including background noise, target radiating noise, etc ), ocean reverberation. according to them, simulate the array signal ; ( 3 ) the system structure, every function blocks composing are studied and founded thoroughly. then, discuss methods of signal processing in time domain and airspace domain ; ( 4 ) program the simulation software of torpedo ' s homing system according to the simulation models and flow charts, which connected with torpedo ' s control part
本文所作的主要工作及研究成果主要有以下幾個方面： （ 1 ）對自導工作過程中的信號與信息處理的基本理論與方法進行了較為全面的研究，為建立一個較為完備的自導模擬系統提供了理論基礎； （ 2 ）討論了自導系統工作過程中海洋通道對目標回波信號與目標輻射噪聲信號等的影響，建立回波信號的數學模型、環境場中的噪聲信號模型（包括海洋環境噪聲、目標輻射噪聲與魚雷背景噪聲等）與海洋混響模型，模擬產生了聲自導系統基陣接收到的回波信號與噪聲信號； （ 3 ）深入研究並建立了自導模擬系統的總體框架，給出各個具體功能模塊組成，討論了聲自導系統對信號的時域與空域處理，並結合模擬程序中陣列信號處理模塊，給出固定多通道波束形成的模擬實現過程； （ 4 ）根據系統的模擬模型與已建立的模擬流程圖編制了通用魚雷模擬器自導系統模擬軟體，通過網路與控制系統相連，組成完整的魚雷模擬器。Researching on the technology if reverse order is to study strains if pits, structural systems if basement, environmental surwey and underpinnings. on account of emphasizing developing methods if checking strength if pick - ets, modemizing machenes of excavation and studying methods of underpinning is put forward and is a way if controlling the quality of pickets in sites, which leads an active effect ; synthetic application if rankintheory, spatial and time effect theory to excavation tl aanalyze the state of soil force and strain is brought forward and the time effect should be considered in the zone of clay, the formation and development of soil plasticity are analyzed and the most dangerous zone to decide how to excavate and where to begin is found ; analyzing the cause of picket settlement during reverse order and the differential settlement and discussing hlw to solute it. duringh the temporary survey and the environmental warship, bringing rorward the theory of environmental vibration and analyzing the state of soil force and probability of losing stabilization of soil under the effect of environmental vibration ; analyzing the state offeree in underground concrete wall by the method of mathematics and pointing out the place of the maximum force and deformation. based on systematic illustrating the reverse order, problems about application and development of reverse order and suggestions also are expressed
鑒于國內外的研究把重點放在大力發展工程樁的實驗室承載力監測方法與設備、如何使土方開挖機械現代化及對周圍建築的臨測方法上，本文提出了現場利用聲波層析成像技術監測鋼砼樁內部質量的方法與程序，並得出了聲波層析成像技術是砼樁的動態質量檢測的有效手段，這對指導施有積極、現實意義；提出了綜合運用朗肯土壓力理論、基坑空間和時間效應影響理論來分析逆作法施工過程中基坑邊坡土體應力及應變的變化情況，指出粘土地區也應考慮時間效應，並且進一步分析了基坑邊坡土體的塑性區形成和發展，找出邊坡最不利的區域，以確定地下室土體的挖掘的方式和順序，指出憑主觀臆斷與經驗來施工是不可取的；在分析、經較逆作法與大開挖順作法的地下室結構體系受力情況及施工順序的不同，提出了節點處理技術；分析了逆作法施工期間樁的沉降變化原因及由此而產生的差異，並探討了解決的方法；本文還提出了環境振動對土體邊坡穩定產生影響的觀點，並分析了在環境振動影響下，土體的應力狀態及土休失穩破壞概率，並且還運用彈性力學知識和數學分析的方法定量地分析了地下混凝土墻受力狀態，指出了被監測墻體的最大應力、應變位置。When the temperature is uniform within the mixed layer, a thermocline appears at the bottom of this layer, and when the effect of surface wave breaking is considered, the temperature is 0. 013 ? lower than the result without wave breaking
當混合層內溫度分佈均勻時，在混合層底部形成一溫度躍層，並且考慮波浪破碎影響時，混合層內的溫度比無波浪影響時均勻分佈的溫度降低了0 . 013 。Internal waves are a kind of bridge relating the diapycnal mechanical mixing to external sources of mechanical energy : first, internal waves are driven by wind stress and barotropic tide so that large amount of mechanical energy are transported to abyssal ocean with propagation of internal waves ; second, the mechanical energy can directly be cascaded to mixing through instability and breaking of internal waves
內波是外界提供的機械能與混合之間聯系的橋梁之一，一方面風和潮汐通過激發內波，將能量向深海和大洋內區傳遞，另一方面，內波的不穩定和破碎直接將機械能串級到小尺度湍流混合中去。開展傾斜地形上內波的傳播以及內潮的產生等方面的研究對海洋混合過程的參數化以及混合對大洋環流的影響等方面的研究具有重要的科學意義。On the basis of simplified calculation model presented by doctor wangxiaoping, some finite element models are set up. by finite element model program sap93, an analysis of static models of 18m - span and 30m - span w666 acmr in different supporting conditions is made. also a study on the relation between definite support displacement, which reflect variational stiffness of substructure represented by steel column or reinforced concrete column, and load - carrying capacity mechanical performance is made too
本文以w666金屬拱型波紋屋頂為研究對象，沿用王小平博士的簡化計算模型，對18m 、 30m跨波紋拱兩端不同支座形式（鉸支、固支和彈性支座）分別利用有限元計算程序sap93進行計算分析，研究波紋拱在不同跨度，不同支座形式下，不同外荷載作用時對該結構受力性能及穩定承載力的影響，同時分析下部支承鋼柱、鋼筋混凝土柱的剛度變化體現為允許支座位移的大小與結構受力性能及穩定承載力之間的關系。At the same time we obtained that the shg conversion efficiency of the flattened gaussian beam is higher than that of the gaussian beam under the same condition ; in section 3, we have computed the theoretical conversion efficiency of the thg on the flattened gaussian beam, where we also have worked out the type - i and type - 11 ( 1 ) thg conversion efficiency curves versus the same effectors, and found the flattened gaussian beams thg conversion efficiency is higher than that of the gaussian beam too ; in the section 4, we have simulated the field distribution of the shg and thg wave on the flattened gaussian beam
在相同條件下，得出了平頂高斯光束的倍頻轉換效率高於高斯光束的倍頻轉換效率；第三章對平頂高斯光束在clbo晶體上的類和類混頻轉換效率與其影響因素的關系進行了數值模擬和計算，並同高斯光束進行比較，同樣得到混頻時，平頂高斯光束的轉換效率高於高斯光束的混頻轉換效率的結論；第四章模擬計算了平頂高斯光束的倍頻、混頻波橫向光場的分佈形式，得到了諧波場仍為均勻平頂高斯光束的結果。This paper analyzed the noniinear, non - - equilibrium, fractai and chaos characteristics of chinese stock market, identified, estimated and tested three fractionaliy integrated time series models the first chapter " introduction to the evoiution of stock market investment theory " summarized the nine important representative theories of different stage, summed up the trend of the development that the stock market investment theory is evotving from static portfplio theory to dynamic time series modei, from univariate modei to muitivariate modei, from linear modei to nonlinear complicated model and from traditional modei to fractai modei, paved the way for following discussion
實際情況卻是股票市場影響因素以及各因素之間相互作用關系復雜，受投資者個人及群體心理因素影響明顯，股票的波動以及收益與風險的關系常常是非線性的，非均衡的，收益的方差和均值是自相關的、不穩定的，收益的波動符合分形布朗運動，表現出分形和混沌的特徵。本文分析了股票市場的波動的非線性、非均衡、分形和混沌特徵，建立並檢驗了幾種股票的分形差分異方差時間序列模型。It is constructed that radial impact and rubbing dynamics differential equations of the rotor system having the nonlinear rigidity on the unsteady and non - linear oil film. the bifurcation and chaos behavior of impact and rubbing fault rotor system caused by the parameters of nonlinear rigidity, rotor rotating speed, eccentric mass is analyzed, in the numerical value analysis method. the bifurcation diagrams, maximum lyapunov exponent diagrams, poincar maps, phase plane portraits, trajectories of journal center, time - history curve, amplitude spectra diagrams of the rotor motion are used
（ 2 ）建立了具有非線性剛度的轉子系統在非穩態非線性油膜力作用下的徑向碰摩動力學微分方程，並應用含高階余項的非線性動力方程的線性化數值法研究了此類系統響應的復雜動力學行為，利用轉子響應的分岔圖、最大lyapunov指數曲線、 poincar截面映射、時域波形、相軌線、軸心軌跡、幅值譜等圖形分析了系統響應的周期運動、擬周期運動、倍周期分岔、混沌等運動形式的轉化與演變過程，重點研究了非線性剛度、轉子轉速、偏心質量等系統參數對碰摩故障轉子系統的分岔和混沌行為的影響。Then a new method by combining beamforming with gcc is presented to efficiently suppress the noise and reverberation. what is more, the improvement to gcc - phat algorithm is also developed, specifically usefulness to background noise and room reverberation elimination
2 ）對延遲-相加波束形成的定位方法作了詳細推導，並針對該方法的缺點加以改進，使其在混響環境下也有較高的精度。Secondly, the author assumes material is elastic, separately adopts planar model and spatial model of the 6 - 12 - 18 - storey spatial concrete frames reckons in shear deformation and axial deformation and contrastingly analyzes lateral displacement of the frames under taft. e1 - centro and tianjfn seismic wave considering geometric non - linear effect or not in order to find out the rule about geometric non - linear effect on earthquake - resistant behavior of multi - storey and highrise concrete frame structure under strong - motion earthquake. simultaneously, the author weighs the effect of spatial self - bracing function on structural analysis by contrasting lateral displacement between planar model and spatial model of the frames
其次，作者在彈性材料假定下，對六層、十二層、十八層空間混凝土框架，分別取其空間模型和平面模型，計入剪切變形、軸向變形的影響，按考慮幾何非線性因素與否，分別在taft 、 e1 ? centro及天津地震波作用下，作以對比分析，以找出幾何非線性效應對多高層混凝土框架結構在強震作用下抗震性能的影響的規律；同時，對平面模型與空間模型之間的空間相互作用，均以其幾何非線性情況下的位移反應作對比分析，來衡量空間相互作用對結構分析的影響。A low detonation velocity explosive with medium density ( lg / cm3 ) and proper power ( > 320ml ). which made from obsolete propellant by controlling the granularity and adding the inhibitor, is studied in this thesis ; the distribution of water in the powdery propellant is described, the effect of detonation velocity from different granularity of powdery propellant is studied and the simulated mathematical model on leakage of water in low detonation velocity explosive is also showed furthermore, the method involved in controlling the leak of water in explosive is provided. meanwhile the effect of inhibitor is experimented some of formulations and processes of low detonation velocity explosive are given in details
廢棄發射藥可直接用來製造凝膠炸藥，在發射藥顆粒的空隙中加入氧化劑和高分子的混合溶液，經過一段時間后氧化劑溶液變成凝膠狀態即可制得灌注炸藥，該灌注炸藥具有密度較高（ 1 . 4g / cm ~ 3 ） 、抗水、爆速較高的特點；文中對灌注液所涉及的材料、工藝流程進行了研究；分析了灌注炸藥的力學性能；利用灌注炸藥的高爆速及發射藥的低爆速組成一定形狀可用來形成特殊的爆轟波，利用matlab程序設計出了平面波發生器並對影響因素進行了討論。( 3 ) with the condition of table 4. 3, with increasing of temperature the average reflectance value decreases and the minimum reflectance point moves towards red direction. furthermore, temperature has little effect on the extinction coefficient ( k ). however, the refractive index value decreases remarkably when the temperature reaches about 240, but it does not change much when the temperature is below 180 and the thickness of the films increase when increasing the temperature
（ 3 ）隨著溫度的增加薄膜的平均反射率降低並且反射低谷向長波方向移動;溫度對消光系數k影響不大;當溫度低於180薄膜的折射率變化不大，當溫度達到240左右時薄膜的折射率明顯降低;薄膜的厚度隨溫度的增加而增加;隨著溫度的增加tio2的晶體結構由混晶變為單一的銳鈦礦相，薄膜的表面的顆粒由多變少，表面形貌由粗糙多孔變得細膩平滑。分享友人