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Journal of applied mathematics & informatics
Journal Basic Information
pISSN :
1598-5857
eISSN :
2234-8417
Journal DOI :
10.14317/jami
Frequency :
Others
Publisher:
The Korean Society of Computational and Applied Mathematics
Editor in Chief :
Cheon-Seoung Ryoo / Hong-Tae Shim
Volume & Issues
Volume 33, Issue 5_6 - Sep 2015
Volume 33, Issue 3_4 - May 2015
Volume 33, Issue 1_2 - Jan 2015
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1
EXISTENCE OF MULTIPLE POSITIVE SOLUTIONS FOR THE SYSTEMS OF HIGHER ORDER BOUNDARY VALUE PROBLEMS ON TIME SCALES
Rao, A. Kameswara ;
Journal of applied mathematics & informatics, volume 33, issue 1_2, 2015, Pages 1~12
DOI : 10.14317/jami.2015.001
Abstract
This paper is concerned with boundary value problems for systems of n-th order dynamic equations on time scales. Under the suitable conditions, the existence and multiplicity of positive solutions are established by using abstract fixed-point theorems.
2
STRONG CONVERGENCE OF STRICT PSEUDO-CONTRACTIONS IN Q-UNIFORMLY SMOOTH BANACH SPACES
Pei, Yonggang ; Liu, Fujun ; Gao, Qinghui ;
Journal of applied mathematics & informatics, volume 33, issue 1_2, 2015, Pages 13~31
DOI : 10.14317/jami.2015.013
Abstract
In this paper, we introduce a general iterative algorithm for finding a common element of the common fixed point set of an infinite family of
-strict pseudo-contractions and the solution set of a general system of variational inclusions for two inverse strongly accretive operators in q-uniformly smooth Banach spaces. Then, we analyze the strong convergence of the iterative sequence generated by the proposed iterative algorithm under mild conditions.
3
MULTI-PARAMETERIZED SCHWARZ ALTERNATING METHOD FOR 3D-PROBLEM
Kim, Sang-Bae ;
Journal of applied mathematics & informatics, volume 33, issue 1_2, 2015, Pages 33~44
DOI : 10.14317/jami.2015.033
Abstract
The convergence rate of a numerical procedure based on Schwarz Alternating Method(SAM) for solving elliptic boundary value problems depends on the selection of the interface conditions applied on the interior boundaries of the overlapping subdomains. It has been observed that the Robin condition (mixed interface condition), controlled by a parameter, can optimize SAM`s convergence rate. In [7], one formulated the multi-parameterized SAM and determined the optimal values of the multi-parameters to produce the best convergence rate for one-dimensional elliptic boundary value problems. Two-dimensional implementation was presented in [8]. In this paper, we present an implementation for three-dimensional problem.
4
EXISTENCE RESULTS FOR NEUTRAL FUNCTIONAL INTEGRODIFFERENTIAL EQUATIONS WITH INFINITE DELAY IN BANACH SPACES
Chandrasekaran, S. ; Karunanithi, S. ;
Journal of applied mathematics & informatics, volume 33, issue 1_2, 2015, Pages 45~60
DOI : 10.14317/jami.2015.045
Abstract
This paper is concerned with the existence of mild solutions for partial neutral functional integrodifferential equations with infinite delay in Banach spaces. The results are obtained by using resolvent operators and Krasnoselski-Schaefer type fixed point theorem. An example is provided to illustrate the results.
5
HIGHER ORDER INTERVAL ITERATIVE METHODS FOR NONLINEAR EQUATIONS
Singh, Sukhjit ; Gupta, D.K. ;
Journal of applied mathematics & informatics, volume 33, issue 1_2, 2015, Pages 61~76
DOI : 10.14317/jami.2015.061
Abstract
In this paper, a fifth order extension of Potra`s third order iterative method is proposed for solving nonlinear equations. A convergence theorem along with the error bounds is established. The method takes three functions and one derivative evaluations giving its efficiency index equals to 1.495. Some numerical examples are also solved and the results obtained are compared with some other existing fifth order methods. Next, the interval extension of both third and fifth order Potra`s method are developed by using the concepts of interval analysis. Convergence analysis of these methods are discussed to establish their third and fifth orders respectively. A number of numerical examples are worked out using INTLAB in order to demonstrate the efficacy of the methods. The results of the proposed methods are compared with the results of the interval Newton method.
6
THROUGHPUT ANALYSIS OF TWO-STAGE MANUFACTURING SYSTEMS WITH MERGE AND BLOCKING
Shin, Yang Woo ; Moon, Dug Hee ;
Journal of applied mathematics & informatics, volume 33, issue 1_2, 2015, Pages 77~87
DOI : 10.14317/jami.2015.077
Abstract
Parallel lines are often used to increase production rate in many manufacturing systems where the main line splits into several lines in parallel, and after some operations, they merge into a main line again. Queueing networks with finite buffers have been widely used for modeling and analyzing manufacturing systems. This paper provides an approximation technique for multi-server two-stage networks with merge configuration and blocking which will be a building block for analysis of general manufacturing systems with parallel lines and merge configuration. The main idea of the method is to decompose the original system into subsystems that have two service stations with multiple servers, two buffers and external arrivals to the second stage are allowed. The subsystems are modeled by level dependent quasi-birth-and-death (LDQBD) process.
7
MULTIPLICATIVELY WEIGHTED HARARY INDICES OF GRAPH OPERATIONS
Pattabiraman, K. ;
Journal of applied mathematics & informatics, volume 33, issue 1_2, 2015, Pages 89~100
DOI : 10.14317/jami.2015.089
Abstract
In this paper, we present exact formulae for the multiplicatively weighted Harary indices of join, tensor product and strong product of graphs in terms of other graph invariants including the Harary index, Zagreb indices and Zagreb coindices. Finally, We apply our result to compute the multiplicatively weighted Harary indices of fan graph, wheel graph and closed fence graph.
8
TOTAL MEAN CORDIAL LABELING OF SOME CYCLE RELATED GRAPHS
Ponraj, R. ; Narayanan, S. Sathish ;
Journal of applied mathematics & informatics, volume 33, issue 1_2, 2015, Pages 101~110
DOI : 10.14317/jami.2015.101
Abstract
A Total Mean Cordial labeling of a graph G
9
ESOR METHOD WITH DIAGONAL PRECONDITIONERS FOR SPD LINEAR SYSTEMS
Oh, Seyoung ; Yun, Jae Heon ; Kim, Kyoum Sun ;
Journal of applied mathematics & informatics, volume 33, issue 1_2, 2015, Pages 111~118
DOI : 10.14317/jami.2015.111
Abstract
In this paper, we propose an extended SOR (ESOR) method with diagonal preconditioners for solving symmetric positive definite linear systems, and then we provide convergence results of the ESOR method. Lastly, we provide numerical experiments to evaluate the performance of the ESOR method with diagonal preconditioners.
10
REFINEMENTS OF HERMITE-HADAMARD TYPE INEQUALITIES FOR CONVEX FUNCTIONS VIA FRACTIONAL INTEGRALS
Xiang, Ruiyin ;
Journal of applied mathematics & informatics, volume 33, issue 1_2, 2015, Pages 119~125
DOI : 10.14317/jami.2015.119
Abstract
In this note, two new mappings associated with convexity are propoesd, by which we obtain some new Hermite-Hadamard type inequalities for convex functions via Riemann-Liouville fractional integrals. We conclude that the results obtained in this work are the refinements of the earlier results.
11
A MODIFIED INEXACT NEWTON METHOD
Huang, Pengzhan ; Abduwali, Abdurishit ;
Journal of applied mathematics & informatics, volume 33, issue 1_2, 2015, Pages 127~143
DOI : 10.14317/jami.2015.127
Abstract
In this paper, we consider a modified inexact Newton method for solving a nonlinear system F(x)
12
AN EFFICIENT SEARCH SPACE IN COUNTING POINTS ON GENUS 3 HYPERELLIPTIC CURVES OVER FINITE FIELDS
Sohn, Gyoyong ;
Journal of applied mathematics & informatics, volume 33, issue 1_2, 2015, Pages 145~155
DOI : 10.14317/jami.2015.145
Abstract
In this paper, we study the bounds of the coefficients of the characteristic polynomial of the Frobenius endomorphism of the Jacobian of dimension three over a finite field. We provide explicitly computable bounds for the coefficients of the characteristic polynomial. In addition, we present the counting points algorithm for computing a group of the Jacobian of genus 3 hyperelliptic curves over a finite field with large characteristic. Based on these bounds, we found an efficient search space that was used in the counting points algorithm on genus 3 curves. The algorithm was explained and verified through simple examples.
13
ALGORITHM FOR WEBER PROBLEM WITH A METRIC BASED ON THE INITIAL FARE
Kazakovtsev, Lev A. ; Stanimirovic, Predrag S. ;
Journal of applied mathematics & informatics, volume 33, issue 1_2, 2015, Pages 157~172
DOI : 10.14317/jami.2015.157
Abstract
We introduce a non-Euclidean metric for transportation systems with a defined minimum transportation cost (initial fare) and investigate the continuous single-facility Weber location problem based on this metric. The proposed algorithm uses the results for solving the Weber problem with Euclidean metric by Weiszfeld procedure as the initial point for a special local search procedure. The results of local search are then checked for optimality by calculating directional derivative of modified objective functions in finite number of directions. If the local search result is not optimal then algorithm solves constrained Weber problems with Euclidean metric to obtain the final result. An illustrative example is presented.
14
RADIO AND RADIO ANTIPODAL LABELINGS FOR CIRCULANT GRAPHS G(4k + 2; {1, 2})
Nazeer, Saima ; Kousar, Imrana ; Nazeer, Waqas ;
Journal of applied mathematics & informatics, volume 33, issue 1_2, 2015, Pages 173~183
DOI : 10.14317/jami.2015.173
Abstract
A radio k-labeling f of a graph G is a function f from V (G) to
such that
for every two distinct vertices x and y of G, where d(x, y) is the distance between any two vertices
. The span of a radio k-labeling f is denoted by sp(f) and defined as max
. The radio k-labeling is a radio labeling when k
15
DISCRETE-TIME BUFFER SYSTEMS WITH SESSION-BASED ARRIVALS AND MARKOVIAN OUTPUT INTERRUPTIONS
Kim, Jeongsim ;
Journal of applied mathematics & informatics, volume 33, issue 1_2, 2015, Pages 185~191
DOI : 10.14317/jami.2015.185
Abstract
This paper considers a discrete-time buffer system with session-based arrivals, an infinite storage capacity and one unreliable output line. There are multiple different types of sessions and the output line is governed by a finite state Markov chain. Based on a generating functions approach, we obtain an exact expression for the mean buffer content.
16
IMPROVING COMPARISON RESULTS ON PRECONDITIONED GENERALIZED ACCELERATED OVERRELAXATION METHODS
Wang, Guangbin ; Sun, Deyu ;
Journal of applied mathematics & informatics, volume 33, issue 1_2, 2015, Pages 193~201
DOI : 10.14317/jami.2015.193
Abstract
In this paper, we present preconditioned generalized accelerated overrelaxation (GAOR) methods for solving weighted linear least square problems. We compare the spectral radii of the iteration matrices of the preconditioned and the original methods. The comparison results show that the preconditioned GAOR methods converge faster than the GAOR method whenever the GAOR method is convergent. Finally, we give a numerical example to confirm our theoretical results.
17
PARAMETER ESTIMATION AND SPECTRUM OF FRACTIONAL ARIMA PROCESS
Kim, Joo-Mok ; Kim, Yun-Kyong ;
Journal of applied mathematics & informatics, volume 33, issue 1_2, 2015, Pages 203~210
DOI : 10.14317/jami.2015.203
Abstract
We consider fractional Brownian motion and FARIMA process with Gaussian innovations and show that the suitably scaled distributions of the FARIMA processes converge to fractional Brownian motion in the sense of finite dimensional distributions. We figure out ACF function and estimate the self-similarity parameter H of FARIMA(0, d, 0) by using R/S method. Finally, we display power spectrum density of FARIMA process.
18
COGNITIVE RADIO SPECTRUM ACCESS WITH CHANNEL PARTITIONING FOR SECONDARY HANDOVER CALLS
Lee, Yutae ;
Journal of applied mathematics & informatics, volume 33, issue 1_2, 2015, Pages 211~217
DOI : 10.14317/jami.2015.211
Abstract
A dynamic spectrum access scheme with channel partitioning for secondary handover calls in cognitive radio networks is proposed to reduce forced termination probability due to spectrum handover failure. A continuous-time Markov chain method for evaluating its performance such as blocking probability, forced termination probability, and throughput is presented. Numerical and simulation results are provided to demonstrate the effectiveness of the proposed scheme with channel partitioning.
19
LIPSCHITZ AND ASYMPTOTIC STABILITY FOR PERTURBED FUNCTIONAL DIFFERENTIAL SYSTEMS
Choi, Sang Il ; Goo, Yoon Hoe ;
Journal of applied mathematics & informatics, volume 33, issue 1_2, 2015, Pages 219~228
DOI : 10.14317/jami.2015.219
Abstract
In this paper, we investigate Lipschitz and asymptotic stability for perturbed functional differential systems.
20
ON POSITIVE SEMIDEFINITE PRESERVING STEIN TRANSFORMATION
Song, Yoon J. ;
Journal of applied mathematics & informatics, volume 33, issue 1_2, 2015, Pages 229~234
DOI : 10.14317/jami.2015.229
Abstract
In the setting of semidefinite linear complementarity problems on
, we focus on the Stein Transformation $S_A(X):