THE PREDATOR-PREY MODEL WITH TWO LIMIT CYCLES
REN YONGTAI Earth East Normal University HAN LI Liaoning Normal University

..............page:30-32

A THEOREM CONCERNING PERFECT MATCHINGS IN HEXAGONAL SYSTEMS
ZHANG FUJI Xinjiang University CHEN RONGSI Fushou University

..............page:1-5

IDENTIFICATION AND HYPOTHESIS TESTING ON ARIMA (p, d, q) MODELS
GAO HONGYE Institute of Applied Mathematics;Academia Sinica

..............page:15-20

0N THE COMPLEXITY OF AN OPTIMAL ROUTING TREE PROBLEM
DU DINGZHU Institute of Applied Mathematics;Academia Sinica KER-I KO State University of New York at Stony Brook;U. S. A.

..............page:68-80

THE TRACE IDENTITY, A POWERFUL TOOL FOR CONSTRUCTING THE HAMILTONIAN STRUCTURE OF INTEGRABLE SYSTEMS (Ⅱ)
TU GUIZHANG Computing Center of Academia Sinica MENQ DAZHI Beijing Polytechnic University

..............page:89-96

RELIABILITY BOUNDS FOR NBUE AND NWUE DISTRIBUTIONS
CHENG KAN Institute of Applied Mathematics;Academia Sinica HE ZONGFU Air Forcs Engineering College;Xi’an

..............page:81-88

SOME IMPROVED PROJECTED QUASI-NEWTON ALGORITHMS AND THEIR CONVERGENCE Ⅰ.METHODS AND GLOBAL BEHAVIOR
ZHANG JIANZHONG;ZHU DETONG;HOU SHAOPING Shanghai Normal University

..............page:33-45

ON THE EXISTENCE AND UNIQUENESS OF CLASSICAL GLOBAL SOLUTION TO A TYPE OF B0USSINESQ EQUATIONS
GAO YINGCAI;WEI YUTING Xi’an Jiaotong University

..............page:21-29

THE EXPECTED VALUES OF ZONAL POLYNOMIALS OF ELLIPTICALLY CONTOURED DISTRIBUTIONS
XU JIAN-LUN Suzhou University FANG KAI-TAI Institute of Applied Mathematics;Academia Sinica

..............page:6-14

FAST STEPWISE PROCEDURES OF SELECTION OF VARIABLES BY USING AIC AND BIC CRITERIA BIC CRITERIA
AN HONGZHI;GU LAN Institute of Applied Mathematics;Academia Sinica

..............page:60-67

SOME IMPROVED PROJECTED QUASI-NEWTON ALGORITHMS AND THEIR CONVERGENCE Ⅱ.LOCAL CONVERGENCE RATE AND NUMERICAL TESTS
ZHANG JIANZHONG;ZHU DETONG;HOU SHAOPING Shanghai Normal University

..............page:46-59