권호 표지

Journal of applied mathematics & informatics

한국전산응용수학회 (The Korean Society for Computational and Applied Mathematics)

  • 연3회간
  • /
  • 2734-1194(pISSN)
  • /
  • 2234-8417(eISSN)

과학기술표준분류

  • 수학 ＞ 응용수학

Aim & Scope

This is a broad based journal covering all branches of computational or applied mathematics with special encouragement to researchers in theoretical computer science and mathematical Informatics. Thus, the major areas, such as Numerical Analysis, Discrete Optimization, Linear and Nonlinear Programming, Theory of Computation(Computational Complexity, Automata and Formal Languages), Control Theory, Theory of Algorithms, Computational Logic, Applied Combinatorics (including graphs, codes, and designs), Coding Theory, Cryptographics, Big data, AI, Fuzzy Theory with applications, Differential Equations with applications, etc., are all included. A large variety of scientific problems also necessarily involve Algebra, Analysis, Geometry, Probability and Statistics, and so on. The journal welcomes research papers in all branches of mathematics which have some bearing on the application to scientific problems, including papers in the areas of Actuarial Science, Mathematical Biology, Mathematical Economics and Finance.

KSCI KCI SCOPUS

제38권5_6호

  1. PAL, A.K. 375
    https://doi.org/10.14317/jami.2020.375 PDF KSCI
    The anti-predator factor due to fear of predator in eco- epidemiological models has a great importance and cannot be evaded. The present paper consists of a modified Lesli-Gower predator-prey model with contagious disease in the predator population only and also consider the fear effect in the prey population. Boundedness and positivity have been studied to ensure the eco-epidemiological model is well-behaved. The existence and stability conditions of all possible equilibria of the model have been studied thoroughly. Considering the fear constant as bifurcating parameter, the conditions for the existence of limit cycle under which the system admits a Hopf bifurcation are investigated. The detailed study for direction of Hopf bifurcation have been derived with the use of both the normal form and the central manifold theory. We observe that the increasing fear constant, not only reduce the prey density, but also stabilize the system from unstable to stable focus by excluding the existence of periodic solutions.
  2. HAGHSHENAS, HADI;AFROUZI, GHASEM A. 407
    https://doi.org/10.14317/jami.2020.407 PDF KSCI
    In this article, a second-order Sturm-Liouville problem with impulsive effects and involving the one-dimensional p-Laplacian is considered. The existence of at least three weak solutions via variational methods and critical point theory is obtained.
  3. JEON, YOUNGJU;KIM, CHANGIL 415
    https://doi.org/10.14317/jami.2020.415 PDF KSCI
    In this paper, we will prove some uniqueness theorems that can be applied to the generalized Hyers-Ulam stability of some additive-quadratic-cubic functional equation in complete modular spaces without Δ2-conditions.
  4. SEO, JONG JIN;RYOO, CHEON SEOUNG 427
    https://doi.org/10.14317/jami.2020.427 PDF KSCI
    In this paper we define a new degenerate Bell-Carlitz polynomials. It also derives the differential equations that occur in the generating function of the degenerate Bell-Carlitz polynomials. We establish some new identities for the degenerate Bell-Carlitz polynomials. Finally, we perform a survey of the distribution of zeros of the degenerate Bell-Carlitz polynomials.
  5. KIM, JERIM;KIM, EYUNGHEE;KIM, CHANGKI 439
    https://doi.org/10.14317/jami.2020.439 PDF KSCI
    A step-up option is a newly developed financial instrument that simultaneously provides higher security and profitability. This paper introduces two step-up options: step-up type1 and step-up type2 options, and derives the option pricing formulas using the Laplace transform. We assume that the underlying equity price follows a regime-switching model that reflects the long-term maturity of these options. The option prices are calculated for the two types of funds, a pure stock fund composed of risky assets only and a mixed fund composed of stocks and bonds, to reflect possible variety in the fund underlying asset mix. The impact of changes in the model parameters on the option prices is analyzed. This paper provides information crucial to product developments.
  6. SWAMINATHAN, A. 463
    https://doi.org/10.14317/jami.2020.463 PDF KSCI
    The purpose of this article is to study the concepts of fuzzy mean open and fuzzy mean closed sets in fuzzy topological spaces. Further, in what way they are similar to those of other. Also we discuss some properties of fuzzy mean open and fuzzy mean closed with fuzzy paraopen and fuzzy paraclosed sets in fuzzy topology.
  7. KIM, DAEWOOK;JEONG, JIN-MUN 469
    https://doi.org/10.14317/jami.2020.469 PDF KSCI
    In this paper, we consider a control system for semilinear differential equations in Hilbert spaces with Lipschitz continuous nonlinear term. Our method is to find the equivalence of approximate controllability for the given semilinear system and the linear system excluded the nonlinear term, which is based on results on regularity for the mild solution and estimates of the fundamental solution.
  8. BOR, HUSEYIN 483
    https://doi.org/10.14317/jami.2020.483 PDF KSCI
    In this paper, we have proved a new theorem dealing with 𝜑 - |C, 𝛼|k summability factors of infinite series under weaker conditions. Also, some new and known results are obtained.
  9. LIANG, YUPENG;SHAO, XINHUI 489
    https://doi.org/10.14317/jami.2020.489 PDF KSCI
    The spatial fractional diffusion equation can be discretized by employing the implicit finite difference scheme using the shifted Grünwald formula. The discretized linear system is obtained, whose the coefficient matrix has a diagonal-plus-Toeplitz structure. In order to solve the diagonal-plus-Toeplitz linear system, on the basis of circulant and skew-circulant splitting (CSCS splitting), we construct a new and efficient iterative method, called DSCS iterative methods, which have two parameters. Than we prove the convergence of DSCS methods. As a focus, we derive the simple and effective values of two optimal parameters under some restrictions. Some numerical experiments are carried out to illustrate the validity and accuracy of the new methods.
  10. CHARY, V. SRINIVAS;REDDY, G. Sudhaamsh MOHAN;ISIK, HUSEYIN;AYDI, HASSEN;CHARY, D. SRINIVASA;RADENOVIC, STOJAN 507
    https://doi.org/10.14317/jami.2020.507 PDF KSCI
    In this article, we establish some fixed point results in G-metric spaces using the modified JS-G-contractions and we provide some suitable examples to support the results. Also, we give an application to solve an integral equation.
  11. WON, YU JIN;YUN, JAE HEON 519
    https://doi.org/10.14317/jami.2020.519 PDF KSCI
    In this paper, we first propose a new total variation-based regularization model for image restoration. We next propose a fixed-point-like method for solving the new image restoration model, and then we provide convergence analysis for the fixed-point-like method. To evaluate the feasibility and efficiency of the fixed-point-like method for the new proposed total variation-based regularization model, we provide numerical experiments for several test problems.
  12. HUSSAIN, SABIR;ALKHALIFAH, MASHAEL M.A. 533
    https://doi.org/10.14317/jami.2020.533 PDF KSCI
    We initiate and introduce the notion of binary soft mapping, which is defined on collection of binary soft sets named as binary soft class over two initial universes U1 and U2 with fixed set of parameters. We also define and study the properties of binary soft images and binary soft inverse images of binary soft sets. Examples and counter examples are also given in support of presented properties. Moreover, these concepts are applied to the problem of medical diagnosis in medical expert systems.
  13. KO, JUNG MI;KIM, YONG CHAN 547
    https://doi.org/10.14317/jami.2020.547 PDF KSCI
    In this paper, we introduce the notions of (dual) residuated frames for a fuzzy logic as an extension of residuated frames for classical relational semantics. We investigate the relations between residuated connections and residuated frames on Alexandrov topologies based on [0, ∞]. Moreover, we study their properties and give their examples.
  14. ANASTASSIOU, GEORGE A. 559
    https://doi.org/10.14317/jami.2020.559 PDF KSCI
    We present uniform and Lp left Caputo-Bochner abstract iterated fractional Landau inequalities over ℝ+. These estimate the size of second and third iterated left abstract fractional derivates of a Banach space valued function over ℝ+. We give an application when the basic fractional order is ${\frac{1}{2}}$.
  15. SHEN, HAILONG;LI, CHUNJI 579
    https://doi.org/10.14317/jami.2020.579 PDF KSCI
    The flatness property of a unilateral weighted shifts is important to study the gaps between subnormality and hyponormality. In this paper, we first summerize the results on the flatness for some special kinds of a weighted shifts. And then, we consider the flatness property for a local-cubically hyponormal weighted shifts, which was introduced in [2]. Let α : ${\sqrt{\frac{2}{3}}}$, ${\sqrt{\frac{2}{3}}}$, $\{{\sqrt{\frac{n+1}{n+2}}}\}^{\infty}_{n=2}$ and let Wα be the associated weighted shift. We prove that Wα is a local-cubically hyponormal weighted shift Wα of order ${\theta}={\frac{\pi}{4}}$ by numerical calculation.
  16. KIM, MIN-SOO 591
    https://doi.org/10.14317/jami.2020.591 PDF KSCI
    This work is a continuation of our investigations for p-adic analogue of the alternating form Dirichlet L-functions $$L_E(s,{\chi})={\sum\limits_{n=1}^{\infty}}{\frac{(-1)^n{\chi}(n)}{n^s}},\;Re(s)>0$$. Let Lp,E(s, t; χ) be the p-adic Euler L-function of two variables. In this paper, for any α ∈ ℂp, |α|p ≤ 1, we give a power series expansion of Lp,E(s, t; χ) in terms of the variable t. From this, we derive a power series expansion of the generalized Euler polynomials with negative index, that is, we prove that $$E_{-n,{\chi}}(t)={\sum\limits_{m=0}^{\infty}}\(\array{-n\\m}\)E_{-(m+n),{\chi}^{t^m}},\;n{\in}{\mathbb{N}}$$, where t ∈ ℂp with |t|p < 1. Some further properties for Lp,E(s, t; χ) has also been shown.
  17. JUNG, N.S. 601
    https://doi.org/10.14317/jami.2020.601 PDF KSCI
    In this paper, we introduce degenerate generalized poly-Bernoulli numbers and polynomials with (p, q)-logarithm function. We find some identities that are concerned with the Stirling numbers of second kind and derive symmetric identities by using generalized falling factorial sum.
  18. KIM, YOUNG ROK;LEE, HUI YOUNG;KIM, AHYUN 611
    https://doi.org/10.14317/jami.2020.611 PDF KSCI
    In this paper, we define a q-analogue of the poly-Euler numbers and polynomials which is generalization of the poly Euler numbers and polynomials including q-analogue of polylogarithm function. We also give the relations between generalized poly-Euler polynomials. Furthermore, we introduce zeta fuctions of Arakawa-Kaneko type and talk their properties and the relation with q-analogue of poly-Euler polynomials.