Dynamic Systems and Applications
Volume 6, 1997
CONTENTS
K. Gopalsamy and P. Liu Dynamics of a logistic map with fading memory 

Khader Ahmad and Adnan Hamoui Dynamical systems of proper characteristic 0 

S. Migorski Some remarks on external solutions of nonlinear first order evolution inclusions 

Leonadro Mora and Neptali Romero Moser=s invariant curves and homoclinic bifurcations 

X. Wen, Z. Ma, P. Fergola and C. Tenneriello Effects of toxicants on chemostat models with n populations competing for a critical nutrient 

Egone Pertotti Characterizing the existence of symmetric solutions for matrix equations X'' + AX = 0 

Xinzhi Liu Periodic boundary value problems for differential equations with finite delay 

Andrea Di Liddo and Lucia Maddalena Nonlocal models for the spread of new products in spatially structured markets 

Jan Seidler and Ivo Vrkoc The generalized Gronwall lemma fails under random stopping 

A. H. Tsoi and Bo Zhang Practical stability of Ito type Nonlinear stochastic differential systems and related control problems 

Marcelo da Silva Montenegro Uniqueness of nonnegative solutions of quasilinear elliptic equations 

S. I. Yuen Quenching rates for degenerate semilinear parabolic equations 
139 
Addolorata Salvatore Homoclinic orbits for a class of strictly convex Hamiltonian systems 
153 
L. B. Ryashko and H. Schurz Mean square stability analysis of some linear stochastic systems 
165 
Peter Y.H. Pang and Ravi P. Agarwal Symmetries of difference systems on manifolds 
191 
Myron K. Grammatikopolous and Stepan A. Tersian On the periodic solutions of nonlinear neutral delay differential quations 
197 
Wang Wendi, Chen Lansun and Lu Zhengyi Global stability of a population dispersal in a twopatch environment 
207 
Donald O’Regan Existence of nonegative solutions for a class of semipositone problems 
217 
Beatrice Paternoster Composite symplectic RungeKutta(Nystrom) methods 
231 
H. W. J. Lee, K. L.Teo, V. Rehbock and L. S. Jennings Control parametrization enhancing technique for time optimal control problems 
243 
H. Bereketoglu and I. Gyori On the boundedness of the solutions of a third order nonlinear differential equation 
263 
Fabrizio Colombo Quasilinear parabolic equations in C^{k} spaces 
271 
Claudio Lazzari Persistence of heteroclinic solutions on center manifolds of perturbed maps 
297 
L. E. Bobisud and J. E. Calvert A priori bounds, forbidden values, and existence for nonlocal problems for steadystate Burgers’ equation 
323 
C. SilvaNavarro and Zvi Retchkiman Stability analysis of singular perturbed systems via vector Lyapunov methods 
339 
M. Iannelli and M. Martcheva A semigroup approach to the well posedness of an agestructured twosex population model 
353 
M. I. Gil’ On exponential stability of nonlinear nonautonomous evolution equations 
371 
G. Arioli and J. Chabrowski Periodic motions of a dynamical System consisting of an infinite lattice of particles 
387 
Sung Kyu Choi, Yoon Hoe Goo and Nam Jip Koo Lipschitz and exponential asymptotic stability for nonlinear functional differential Systems 
397 
B. G. Zhang and H. Wang The existence of nonoscillatory and oscillatory solutions of neutral difference equations 
411 
Janos Karsai On the existence of a solution tending to zero of nonlinear differential equations 
429 
P. Clement and G. Da Prato White noise perturbation of the heat equation in materials with memory 
441 
Z.C. Okonkwo and G.S. Ladde Itotype stochastic differential systems with abstract Volterra operators and their control 
461 
Ravi P. Agarwal and M. Sambandham Multipoint Boundary Value Problems for Discrete Systems 
469 
T. Hara, R. Miyazaki and T. Morii Asymptotic stability condition for linear differentialdifference equations with N delays 
493 
E. Ait Dads, K. Ezzinbi and S. Fatajou Weakly almost periodic solutions of the inhomogeneous linear equations and periodic processes in a Banach space 
507 
Xinzhi Liu Periodic boundary value problems for impulsive systems containing Hammerstein type Integrals 
517 
HorngJaan Li and ChehChih Yeh Oscillation of second order sublinear differential equations 
529 
Ramon Navarro Focal oscillation for second order systems 
535 
SoonMo Jung HyersUlamRassias stability of functional equations 
541 
L. Berezansky and E. Braverman On nonoscillation of a scalar delay differential equation 
567 
O. Akinyele Conevalued Lyapunov functions and stability of Nonlinear boundary value problems 
581 
Xilin Fu and Liqin Zhang Razumikhintype theorems on boundedness in terms of two measures for functional differential systems 
589 
Content of Volume 6 
599 
Author Index 
603 