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김제열,조상호,김건일,허경림,김현숙,조구영,최영진,이원용,임종윤 朝鮮大學校 附設 醫學硏究所 2007 The Medical Journal of Chosun University Vol.32 No.2
Cardiac tumors, especially the primary tumors involving any part of the heart are extremely rare and its relative incidence has been reported to be approximately 0.02%. We report a patient with huge cardiac hemangioma who complained of shortness of breath, general weakness, and dizziness, Imaging study by echocardiography and computed tomography of thorax revealed a huge lobulating mass like a bunch of grapes in the right chamber of heart. The surgical exploration of thorax was performed and a histological diagnosis of spindle cell hemangioma was obtained by microscopy. The patient was treated by surgical resection of the tumor and doing well after surgery. Our experience indicated that prompt diagnosis and treatment of cardiac hemangioma is imperative for patients' prognosis.
ITERATIVE APPROXIMATIONS OF ZEROES FOR ACCRETIVE OPERATORS IN BANACH SPACES
Cho Yeol-Je,Zhou Haiyun,Kim Jong-Kyu Korean Mathematical Society 2006 대한수학회논문집 Vol.21 No.2
In this paper, we introduce and study a new iterative algorithm for approximating zeroes of accretive operators in Banach spaces.
Caratheodory's approximate solution to stochastic differential delay equation
Cho, Yeol Je,Kim, Young-Ho International Scientific Research Publications MY 2017 The journal of nonlinear science and applications Vol.10 No.4
<P>In this paper, we show the difference between an approximate solution and an accurate solution for a stochastic differential delay equation, where the approximate solution, which is called by Caratheodory, is constructed by successive approximation. Furthermore, we study the p-th moment continuity of the approximate solution for this delay equation. (C) 2017 All rights reserved.</P>
On Strongly Nonlinear Implicit Complementarity Problems in Hilbert Spaces
Cho, Yeol Je,Huang, Nan-Jing Department of Mathematics 2006 Kyungpook mathematical journal Vol.46 No.1
In this paper, we study a class of strongly nonlinear implicit complementarity problems in the setting of Hilbert spaces H (not necessarily Hilbert lattices). By using the property of the projection and a suitable change of variables, we establish the equivalence between the strongly nonlinear implicit complementarity problem and the fixed point problem in H. Moreover, we use this equivalence and the fixed point theorem of Boyd and Wong to prove the existence and uniqueness of solutions for the strongly nonlinear implicit complementarity problem in H.
STRICT CONVEXITY AND STRICT 2-CONVEXITY
CHO, YEOL JE,KIM, SEONG SIK,FREESE, RAYMOND W.,WHITE, ALBERT 동의대학교 기초과학연구소 1994 基礎科學硏究論文集 Vol.4 No.1
In this paper, we give new characterization of strict convexity and strict 2-convexity in linear 2-normed spaces in terms of Gateaux derivatives and a duality mapping type, respectively.
Common Fixed Point Theorems for Multivalued Mappings
Cho, Yeol Je 慶尙大學校 1982 論文集 Vol.21 No.1
이 논문의 목적은 Single-valued mapping에 대한 부동점 정리들을 Multivalued mapping에 대해서 확장한 것이다. 본논문의 결과들은 Husain와 Sehgal, Kannan, Kaul형와 Pai, Rogers와 Hardy의 결과들과 그 외에 많은 결과들을 특별한 경우로써 얻어질 수 있다.
Strictly Convex Linear 2-Normed Spaces
CHO, YEOL JE,HA, KI SIK,KIM, SEONG SIK,KHAN, M. S. 동의대학교 기초과학연구소 1991 基礎科學硏究論文集 Vol.1 No.1
In this paper, we give several new characterizations of 2-inner product spaces and strict convexity for linear 2-normed spaces in terms of orthogonalites and 2-semi-inner product spaces
Extended sufficient semilocal convergence for the Secant method
Cho, Yeol Je,Argyros, Ioannis K.,Hilout, Saï,d Elsevier 2011 COMPUTERS & MATHEMATICS WITH APPLICATIONS - Vol.62 No.2
<P><B>Abstract</B></P><P>We establish new sufficient convergence conditions for the Secant method to a locally unique solution of a nonlinear equation in a Banach space. Using our new concept of recurrent functions, and combining Lipschitz and center-Lipschitz conditions on the divided difference operator, we obtain a new semilocal convergence analysis of the Secant method. Moreover, our sufficient convergence conditions expand the applicability of the Secant method in cases not covered before (Dennis, 1971 <ce:cross-ref refid='br000045'>[9]</ce:cross-ref>, Hernández et al., 2005 <ce:cross-ref refid='br000040'>[8]</ce:cross-ref>, Laasonen, 1969 <ce:cross-ref refid='br000075'>[15]</ce:cross-ref>, Ortega and Rheinboldt, 1970 <ce:cross-ref refid='br000055'>[11]</ce:cross-ref>, Potra, 1982 <ce:cross-ref refid='br000025'>[5]</ce:cross-ref>, Potra, 1985 <ce:cross-ref refid='br000035'>[7]</ce:cross-ref>, Schmidt, 1978 <ce:cross-ref refid='br000090'>[18]</ce:cross-ref>, Yamamoto, 1987 <ce:cross-ref refid='br000060'>[12]</ce:cross-ref>, Wolfe, 1978 <ce:cross-ref refid='br000095'>[19]</ce:cross-ref>). Numerical examples are also provided in this study.</P>