ON THE CENTER OF GENERALIZED LIENARD SYSTEM

This paper discusses the local and global center of the generalized Lienard system, gives two theorems which extend and improve the relative results of [1]-[3]. Moreover the lemmas in this paper are also useful to the study for the oscillation, stability and the existence of limit cycles of the generalized Lienard system.     

ON THE NON-EXISTENCE OF PERIODIC SOLUTIONS OF A GENERALIZED LIENARD SYSTEM

ＯＮＴＨＥＮＯＮ－ＥＸＩＳＴＥＮＣＥＯＦＰＥＲＩＯＤＩＣＳＯＬＵＴＩＯＮＳＯＦＡ　ＧＥＮＥＲＡＬＩＺＥＤＬＩＥＮＡＲＤＳＹＳＴＥＭＨｕａｎｇＬｉｈｏｎｇ（黄立宏）（ＨｕｎａｎＵｎｉｖｅｒｓｉｔｙ）Ａｂｓｔｒａｃｔ：Ｉｎｔｈｉｓｐａｐｅｒ，ｓｏｍｅｋｎ...     

NOTE ON THE OSCILLATION OF THE SOLUTION FOR GENERALIZED LIENARD EQUATIONS

Ｃｏｎｓｉｄｅｒｉｎｇｓｙｓｔｅｍ：ｘ＝φ（ｙ）－Ｆ（ｘ），ｙ＝－ｇ（ｘ）｛（Ｅ）ｉｎｗｈｉｃｈＦ（ｘ）＝∫ｘ０ｆ（ｔ）ｄｔ，ｆ（ｘ），ｇ（ｘ），φ（ｙ）ａｒｅｃｏｎｔｉｎｕｏｕｓ，ａｎｄｓａｔｉｓｆｙｔｈｅｃｏｎｄｉｔｉｏｎｓｗｈｉｃｈｅｎｓｕｒ...     

THE LOCAL CENTER OF GENERALIZED LIENARD SYSTEM

This paper gives a theorem for the local center of generalized Lienard system; the relative theorems in the references can be deduced from our corollaries.     

GLOBAL ASYMPTOTIC STABILITY OF THE PERIODIC LOTKA-VOLTERRA SYSTEM WITH TWO-PREDATORS AND ONE-PREY

The three species Lotka-Volterra periodic model with two predators and one prey is considered. A set of easily verifiable sufficient conditions is obtained. Finally, an example is given to illustrate the feasibility of these conditious.     

GLOBAL ASYMPTOTIC STABILITY OF PERIODIC SOLUTION IN N-SPECIES COMPETITION SYSTEM WITH TIME DELAYS

１ＩｎｔｒｏｄｕｃｔｉｏｎＩｔｉｓｋｎｏｗｎｔｈａｔｍｅｔｈｏｄｓｏｆｍａｔｈｅｍａｔｉｃａｌｍｏｄｅｌｃａｎｂｅｕｓｅｄｔｏｄｅｓｃｒｉｂｅｔｈｅｄｙｎａｍｉｃａｌｂｅｈａｖｉｏｒａｍｏｎｇｓｐｅｃｉｅｓｉｎｅｃｏｌｏｇｙ．Ｒｅｃｅｎｔｌｙｍａｎ...     

ON THE CONTINUABILITY OF SOLUTIONS IN THE FUTURE FOR THE LIENARD SYSTEM

ＯＮＴＨＥＣＯＮＴＩＮＵＡＢＩＬＩＴＹＯＦＳＯＬＵＴＩＯＮＳＩＮＴＨＥＦＵＴＵＲＥＦＯＲＴＨＥＬＩＥＮＡＲＤＳＹＳＴＥＭＨｕａｎｇＬｉｈｏｎｇ（黄立宏）（ＨｕｎａｎＵｎｉｖｅｒｓｉｔｙ，湖南大学，邮编：４１００８２）Ａｂｓｔｒａｃｔ：Ｔｈｅｍａｉｎｐ...     

A NOTE ON THE GLOBAL SOLUTIONS OF A SEMILINEAR REACTION DIFFUSION SYSTEM

ＡＮＯＴＥＯＮＴＨＥＧＬＯＢＡＬＳＯＬＵＴＩＯＮＳＯＦＡＳＥＭＩＬＩＮＥＡＲＲＥＡＣＴＩＯＮＤＩＦＦＵＳＩＯＮＳＹＳＴＥＭ（王明新，吴永辉）￥ＷａｎｇＭｉｎｇｘｉｎ（Ｄｅｐｔ．ｏｆＭａｔｈｅｍａｔｉｃｓＭｅｃｈａｎｉｃｓ，ＳｏｕｔｈｅａｓｔＵｎｉｖ，...     

PERMANENCE AND GLOBAL STABILITY OF A DISCRETE COOPERATION SYSTEM

In this paper,a discrete cooperation system is studied. Sufficient conditions which guarantee the permanence and global stability of such system are obtained.     

THE GLOBAL STABILITY OF A DIFFERENTIAL DELAY MODEL

The Gierer-Meinhardt's Model with a time delaydx(t)/dt=Co-bx(t)+cx2(t-τ)/y(t)(1+kx2(t-τ)),dy(t)/dt=x2(t)-ay(t).is studied. It is proved that there exists a Hopf bifurcation. Some conditions are established under which the equilibrium is globally stable.     

ON GLOBAL SOLUTION FOR A CLASS OF SYSTEMS OF MULTI－DIMENSIONAL GENERALIZED ZAKHAROV TYPE EQUATION

ＯＮＧＬＯＢＡＬＳＯＬＵＴＩＯＮＦＯＲＡＣＬＡＳＳＯＦＳＹＳＴＥＭＳＯＦＭＵＬＴＩ－ＤＩＭＥＮＳＩＯＮＡＬＧＥＮＥＲＡＬＩＺＥＤＺＡＫＨＡＲＯＶＴＹＰＥＥＱＵＡＴＩＯＮＧＵＯＢＯＬＩＮＧ（郭柏灵）（ＩｎｓｔｉｔｕｔｅｏｆＡｐｐｌｉｅｄａｎｄＣｏｍｐｕ...     

ON THE ASYMPTOTIC ASSIGNMENT OF THE BOUNDS OF DECREASING RATE FOR A TIME-VARYING LINEAR CONTROL SYSTEM

In the paper the problem on the assignment of the bounds of decreasing rate for a time-varying linear control system is discussed. The sufficient and necessary condition for bounds of decreasing rate of a time-varying linear system to be assigned arbitrarily is presented. It is pointed out that for any given real number n, M, n相似文献   

A THEOREM OF UNIFORMLY ASYMPTOTIC STABILITY FOR DELAY DIFFERENCE SYSTEM

In this paper, we establish a criterion of unformly asymptotic stability for finite delay difference systems in terms of two measures by employing Lyapunov functionals method.     

ON THE EXISTENCE OF PERIODIC SOLUTION OF HIGHER ORDER PERIODIC SYSTEM

ＯＮＴＨＥＥＸＩＳＴＥＮＣＥＯＦＰＥＲＩＯＤＩＣＳＯＬＵＴＩＯＮＯＦＨＩＧＨＥＲＯＲＤＥＲＰＥＲＩＯＤＩＣＳＹＳＴＥＭ（王全义）华侨大学，邮编：３６２０１１ＷａｎｇＱｕａｎｙｉ（ＨｕａｑｉａｏＵｎｉｖｅｒｓｉｔｙ）Ａｂｓｔｒａｃｔ：Ｉｎｔｈｉｓｐａｐ...     

ON THE ASYMPTOTIC EXPANSION OF THE SOLUTION OF NON-AUTONOMOUS AND NONLINEAR ORDINARY DIFFERENTIAL EQUATIONS

In this paper we will deal with the asymptotic behavior of the solution to a class of non-autonomous and nonlinear differential equations which is more general than the Riccati matrix differential equation.     

SIMILARITY TRANSFORMATION, THE STRUCTURE OF THE TRAVELING WAVES SOLUTION AND THE EXISTENCE OF A GLOBAL SMOOTH SOLUTION TO GENERALIZED KURAMOTO SIVASHINSKY TYPE EQUATIONS

The existence of a global smooth solution for the initial value problem of generalized Kuramoto-Sivashinsky type equations have been obtained. Similarty siolutions and the structure of the traveling waves solution for the generalized KS equations are discussed and analysed by using the qualitative theory of ODE and Lie's infinitesimal transformation respectively.     

ON THE EXISTENCE OF ZERO POINTS OF A CONTINUOUS FUNCTION

IPreliminarlesTheee。etOOk totot比OO。stsllCCdCSdO‘lOll‘。山OOqll时1OO/(。)＝。,SS山 SFSSdPoint Theorems[‘’,”],Degree Theory【9,15]．In general these are used when f aPPlies a set ora space on itself．Cm眈inn眈ion Methods can be used to test the existence ofa solution whenf pplies a set or a sp。e on it咖‘－’,”－“l,or aPPlies a set or sP。m another sP。,s。M see here．wrthermore,contlnuulon methods pve us the exlstence ofcurves wb讪 can beused to CalCttlue the Sdutionsl6…     

ON THE ROBUSTNESS OF A GENERALIZED PREDICTIVE CONTROLLER

In this paper, we present a quantitative analysis of the robustness of a generalized predictive controller. The result of stability analysis shows that, under a specific bounded modelling error, the closed-loop system is BIBO stable in the presence of unmedelled dynamics.     

ON THE UNIQUENESS OF LIMIT CYCLE FOR A GENERALIZED LINARD SYSTEM

１．ＲｅｃｅｎｔｌｙｔｈｅｒｅａｒｅｓｏｍｅｇｏｏｄｌｉｔｅｒａｔｕｒｅｓｃｏｎｃｅｒｎｉｎｇｔｈｅｕｎｉｑｕｅｎｅｓｏｆｌｉｍｉｔｃｙｃｌｅｓｆｏｒｇｅｎｅｒａｌｉｚｅｄＬｉéｎａｒｄｓｙｓｔｅｍｓｘ＝φ（ｙ）－Ｆ（ｘ），ｙ＝－ｇ（ｘ），（Ｆ（ｘ）...     

THE EXISTENCE, UNIQUENESS AND STABILITY OF ALMOST PERIODIC SOLUTION FOR A CLASS OF NONLINEAR SYSTEM

In this paper, we study the problems on the existence, uniqueness and stability of almost periodic solution for a class of nonlinear system. Using fixed point theorem and Lyapunov functional, the sufficient conditions are given which guarantee the existence, uniqueness and stability of almost periodic solution for the system.