نتایج جستجو برای: three phase lag model frequency equation

تعداد نتایج: 4066782  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه 1377

the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...

2014
Hanzhou Li Quan Pan Xiaoxu Wang Juanni Zhang Jiang Li Xiangjun Jiang

A dynamic attitude measurement system (DAMS) is developed based on a laser inertial navigation system (LINS). Three factors of the dynamic attitude measurement error using LINS are analyzed: dynamic error, time synchronization and phase lag. An optimal coning errors compensation algorithm is used to reduce coning errors, and two-axis wobbling verification experiments are presented in the paper....

Journal: :bulletin of the iranian mathematical society 0
a. shokri department of mathematics‎, ‎faculty of basic science‎, ‎university‎ ‎of maragheh‎, ‎p.o‎. ‎box 55181-83111‎, ‎maragheh‎, ‎iran. h. saadat department of mathematics‎, ‎faculty of basic science‎, ‎university‎ ‎of maragheh‎, ‎p.o‎. ‎box 55181-83111‎, ‎maragheh‎, ‎iran.

many simulation algorithms (chemical reaction systems, differential systems arising from the modeling of transient behavior in the process industries and etc.) contain the numerical solution of systems of differential equations. for the efficient solution of the above mentioned problems, linear multistep methods or runge-kutta technique are used. for the simulation of chemical procedures the ra...

2013
Vineet Srivastava

In this article, the author has used fractional calculus to explain the wave nature of heat propagation as well as heat conduction at molecular level with dual phase lag; in this row he proposed dual phase lag heat equation of fractional order. Modified Adomian Decomposition Method and New Iterative Method are applied to obtain the approximate analytical solutions of the proposed model. Numeric...

A new two-step implicit linear Obrechkoff twelfth algebraic order method with vanished phase-lag and its first, second, third and fourth derivatives is constructed in this paper. The purpose of this paper is to develop an efficient algorithm for the approximate solution of the one-dimensional radial Schrodinger equation and related problems. This algorithm belongs in the category of the multist...

Journal: :Journal of theoretical biology 2017
Dominique Chu

Many microbes when grown on a mixture of two carbon sources utilise first and exclusively the preferred sugar, before switching to the less preferred carbon source. This results in two distinct exponential growth phases, often interrupted by a lag-phase of reduced growth termed the lag-phase. While the lag-phase appears to be an evolved feature, it is not clear what drives its evolution, as it ...

A Sur, M Kanoria

In this work, a new mathematical model of thermoelasticity theory has been considered in the context of a new consideration of heat conduction with fractional order theory. A functionally graded isotropic unbounded medium is considered subjected to a periodically varying heat source in the context of space-time non-local generalization of three-phase-lag thermoelastic model and Green-Naghdi mod...

Abstract - This paper presents a new design of microwave microelectromechanical systems (MEMS) phase shifter for dual band wireless local area network (WLAN) applications. A bit is designed which product a constant phase shift of 11.25° by switching between two line that consist of 12 and 6 unitcells in each frequency band. A unitcell is constructed by gold membrane suspended over the coplanar ...

2012
Chang-kwon Kang Wei Shyy

While biological flyers often display deformed wing structures, the effects of flexibility on the flapping wing aerodynamics remain inadequately understood. We investigate the lift generation and phase dynamics of a flapping flexible wing in hover, between Reynolds number of 100 and 1000 corresponding to small insects, using fully coupled Navier-Stokes equation and linear beam model. The γ scal...

A Chattopadhyay P.K Saroj, S Chaudhary, S.A Sahu

A mathematical model is considered to investigate the behavior of horizontally polarized shear waves (SH-waves) in fluid saturated porous medium sandwiched between heterogeneous half-spaces. Heterogeneity in the upper half-space is due to linear variation of elastic parameters, whereas quadratic variation has been considered for lower half-space. The method of separation of variables and Whitta...

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