periodic coefficient 中文意思是什麼

periodic coefficient 解釋
周期系數
  • periodic : adj. 1. 周期的，回歸的，定期的，定時的；間歇的，時時的。2. 某一時期的。3. 【修辭學】掉尾句的，圓周句的；美詞麗句的。adj. 【化學】高碘的。
  • coefficient : adj. 共同作用的。n. 1. 共同作用；協同因素。2. 【數，物】系數，率；程度。
  1. It was found that comparing with the case without dirt band the periodic weighting distance, median roof moving coefficient and support resistance all increased to different extent because of the influence of dirt band

    發現由於夾矸的影響，與不含夾矸層工作面相比，其周期來壓步距、平均動壓系數和支護阻力都有不同程度的增大。
  2. Based on vibration principle, the paper establishes dynamics analysis model of output shaft with elastic support, according to fourer series spread principle of periodic function, the dynamic response formula is derived by separating complex vibration force into sum of many simple harmonic excitation function of whole number times frequency relations. the result shows that response of both sides support is synchronous when load distribution non - uniform coefficient is 1

    依據振動理論建立了具有彈性支撐的輸出軸的動力學分析模型，根據周期函數的傅里葉級數展開原理，將復雜的激振力分解成為多個頻率成整倍數關系的簡諧激勵函數，導出了動態響應表達式，結果表明，當載荷分配不均勻系數為1 . 0時的輸出軸兩端支撐同步。
  3. Optimal periodic control with the lowest operational cost by limiting total substrate discharge mass was studied. through adding new state variable and using supplement functions, the problem with restriction conditions was converted into nonrestriction problem. in addition, the dynamic searching method of optimal step coefficient was developed to modify the conventional gradient method, consequently the calculation problem of the multivariable optimal periodic control was able to be resolved better. it was found that the operational costs of optimal control under various initial states are distinctly different. a new concept of optimal control under optimal initial state was presented. it is pointed out emphatically that to the treatment system without optimal control condition, the suboptimal control with extensive practical value can be realized according to the results of optima control

    著重研究了在限制有機物排放總量時，使其運行費用最低的最優周期控制問題.通過增加新的狀態變量和用補償函數法，將本課題的有約束條件問題化為無約束條件問題，並提出了最優步長參數的動態搜索法來修改傳統的梯度法，從而較完善地解決了多變量最優周期控制的計算問題.研究中還發現了不同初始條件下最優控制所需要的運行費用也大不相同，進而提出了最優初始狀態下最優周期控制的新概念，這對保證出水質量的同時進一步降低污水處理成本來說具有更重要的意義.本文還強調指出：對于尚不具備實現最優控制條件的處理系統，可根據最優控制的研究結果實現具有廣泛實用價值的準最優控制
  4. The statistic of wavelet transform coefficient algorithm can solve the periodic noise, high - energy noise and some non - gauss noise simply and effectively ; bi - spectrum can acquire more information from the original signal than power - spectrum, detect more information except from range and restrain the gauss noise. short - time speech signal can be considered as stationary and with periodic non - gauss signal, so we can make use of bi - spectrum to obtain the speech character and separate the speech and noise and detect morse telegraph signal ; complex number spectrum variance algorithm is put forward based on the deeply observing speech data, it is a new algorithm, experiment show that it is simple, effective

    統計演算法在解決周期信號、高能噪聲和高斯信號方面有獨特之處，能簡單有效提取以上噪聲的特徵;雙譜能夠提供比功率譜更多的有用信息，有效地檢測信號幅度之外的其它信息，並能有效抑制高斯噪聲，短時語音信號一般認為是平穩且有一定的周期性的非高斯信號，因而可以利用雙譜來提取語音信號特性並實現信噪分離;復數譜方差演算法是在對語音信號進行深入觀察和分析的基礎上而提出來的一種全新的語音特徵提取方法，此方法簡單而有效的提取了語音、噪聲的特徵以及檢測莫爾斯信號，基於實驗表明，該演算法取得了很好的效果。
  5. The numerical simulations demonstrate that there is a quasi - periodic rotation on the invariant curve when the coupling coefficient e is small enough

    數值計算表明當空間耦合強度足夠小且限制在某些范圍內時，系統在不變圈上是擬周期運動。
  6. The linear periodic time - varying vibration system can be changed to a constant coefficient linear system by l tansformation

    摘要線性周期時變齊次系統的狀態方程經李亞普諾夫變換后，周質系數線性時變振動系統轉化為一非齊次定常線性系統。
  7. The material ways are to model the honeycomb wall as an impredence surface, to express the infinite honeycomb by using periodic green ' s function, and using method of moment to establish the mathematic model, in applying the methods of moments, we choose the roof function as basic function and choose the razor function as test function ; by equating the incident field to sum of the scattering field and impledance field ; we will set up the integral equation for the surface current, solving it by mom equation. then gain it ' s reflected coefficient ' s numerical result. and we propose first the definition of the equivalent electromagnetic parameters and present a method to calculate them from the gained reflection coefficient

    具體方法就是將浸漬吸收劑的蜂窩壁用表面阻抗表示，將無限大的周期結構的電場用周期格林函數來表示，選取有耗蜂窩結構中具有代表性的基本計算單元應用矩量法建立數學模型，在運用矩量法時用屋頂函數作為基函數，刀片函數作為檢驗函數，根據蜂窩壁表面電場必須滿足入射電場等於散射電場和阻抗電場之和的規律，推導表面電場積分方程，求解蜂窩結構的表面電流，利用蜂窩的周期規律得到無限大均勻周期陣列的散射電場。
  8. The results show that, when and 02 are in various intervals, the trajectories for systems ( i ) are either ultimately periodic or convergent to an equilibrium. the difference between system ( i ) and system ( ii ) only lies on the sign of self - feedback coefficient, but their asymptotic behavior of trajectories are much different. for the given initial value, the solutions for system ( ii ) all converge to the certain equilibrium

    結果表明：當_ 1和_ 2在不同的取值范圍內，系統（ ）的解或收斂到某一平衡點，或無限逼近於某個周期解，且部分_ 1 ， _ 2下的極限環全局穩定；系統（ ）與系統（ ）的區別僅在於自反饋系數的符號為負，但由此其解軌線的極限性態發生了很大的變化，對于確定的初值，系統（ ）的解均收斂到確定的平衡點。
  9. Abstract : in the light of the problems of high power consumption and low working efficiency in a beam pumping unit, a new method for power saving of the unit is proposed, that is, adopting an optimum structure of the unit and decreasing the periodic load coefficient of the pumping unit by changing the performance characteristics of the electric motor and by increasing the rotary inertia of the unit

    文摘:針對游梁式抽油機能耗大，工作效率低的問題，提出遊梁式抽油機節能的新方法，即在採用優化抽油機結構的基礎上，通過改變電動機的工作特性和增加抽油機轉動慣量的辦法降低抽油機周期載荷系數。
  10. Uniqueness of almost periodic solution of an epidemic sis model with variable coefficient

    模型概周期解存在惟一性
  11. It is found that two main eof modes of turbulent heat fluxes mainly describe the flux variations in two trade wind regions. the mtm spectrum of the first time series of expansion coefficient shows a periodic signal at about two - to - three months and two - to - three years quasi - periodic signal ( at the 95 % level )

    熱帶大西洋的增暖事件中，東風減弱，西風加強，赤道冷舌區海洋的潛熱和感熱損失隨sst的增暖而增大， itcz區海洋的潛熱和感熱損失則伴隨著風速的減小而減小。
  12. The existence of uniformly asymptotically stable almost periodic solution of nonlinear differential equation with coefficient perturbation

    具系數擾動的非線性微分方程的一致漸進穩定的概周期解
  13. The process of noise elimination based on wavelet is to eliminate disturbed noise of enterprise signals which produced when it bored, conveyed and processed. the elimination noise process is to use the valve filter method to filter the high frequency coefficient, and reconstruct the low frequency and high frequency which noise have been eliminated, the signal after noise eliminated is more glossy and it is helpful to do the trend forecast it can analyze and do trend forecast to the total trend, periodic and sudden change of signals when do the trend forecast to the enterprise signals

    基於小波方法對企業數據信號展開的消噪過程，主要是對經濟數據在生成、傳遞和加工過程中產生的干擾噪聲進行消除，消噪的方法主要是採用高頻系數的閥值過濾法，通過對低頻和過濾后的高頻的重構可以還原出消噪后的信號，該信號的光滑性更好從而有益於對企業數據信號進行進一步的趨勢預測。
  14. Abstract : in this paper, we discuss stability of two order linear differential equations with periodic coefficient and obtain some criterias for recogniting stability

    文摘:討論周期系數二階線性微分方程的穩定性問題.給出了判定穩定性較精確的方法，利用這個方法，獲得了判定穩定性簡潔而實用的若干準則
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