special issue dedicated to professor shinnosuke oharu on the occasion of his 65th birthday

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Journal of Computational and Applied Mathematics 204 (2007) 1 – 2 www.elsevier.com/locate/cam Preface Special issue dedicated to Professor Shinnosuke Oharu on the occasion of his 65th birthday We are happy and honored to be Guest Editors of this Special Issue of the Journal of Computational and Applied Mathematics dedicated to our friend and colleague S. Oharu of Chuo University, Tokyo, Japan. Professor Oharu has made significant theoretical and applied contributions in the field of partial differential equations. His early and middle career focus has been nonlinear functional analysis and evolution equations in Banach and locally convex spaces. He has published approximately one hundred papers concerning the generation of evolution operators associated with semilinear and fully nonlinear evolution equations in Banach space. He is recognized as one of the major innovators in nonlinear semigroup theory, especially in the theory of evolution equations with nonlinear, multi-valued generators. In 1994 he became interested in the concrete and practical application of the well-developed theory of nonlinear evolution equations. He began to cultivate contacts with specialists in the fields of biophysics, biology, chemistry, microbiology, medicine, agriculture, neurosurgery, dentistry, demography and environmental science. He is now pur- suing an impressive and diverse array of applied research projects. Among these are the study of bone remodeling phenomena and physiological analysis through computer simulations, mathematical modeling of ecological systems of microbes in the coastal ocean and sea pollution, a CFD approach to multi-component fluid motion phenomena, computer simulation of environmental fluids over complex topographies, and mathematical models of environmental fluids and development of environmental restoration technology by means of plants and bacteria. Professor Oharu has been working also in the field of medicine and biology, with projects such as the development of mathematical models describing the dynamics of host–pathogen interactions with HIV virus and the process of disease progression, as well as a mathematical approach to population dynamics and computer simulation with the aid of statistical data analysis. 0377-0427/$ - see front matter © 2006 Elsevier B.V. All rights reserved. doi:10.1016/j.cam.2006.04.022

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Journal of Computational and Applied Mathematics 204 (2007) 1–2www.elsevier.com/locate/cam

Preface

Special issue dedicated to Professor Shinnosuke Oharu on theoccasion of his 65th birthday

We are happy and honored to be Guest Editors of this Special Issue of the Journal of Computational and AppliedMathematics dedicated to our friend and colleague S. Oharu of Chuo University, Tokyo, Japan.

Professor Oharu has made significant theoretical and applied contributions in the field of partial differential equations.His early and middle career focus has been nonlinear functional analysis and evolution equations in Banach and locallyconvex spaces. He has published approximately one hundred papers concerning the generation of evolution operatorsassociated with semilinear and fully nonlinear evolution equations in Banach space. He is recognized as one of the majorinnovators in nonlinear semigroup theory, especially in the theory of evolution equations with nonlinear, multi-valuedgenerators.

In 1994 he became interested in the concrete and practical application of the well-developed theory of nonlinearevolution equations. He began to cultivate contacts with specialists in the fields of biophysics, biology, chemistry,microbiology, medicine, agriculture, neurosurgery, dentistry, demography and environmental science. He is now pur-suing an impressive and diverse array of applied research projects. Among these are the study of bone remodelingphenomena and physiological analysis through computer simulations, mathematical modeling of ecological systemsof microbes in the coastal ocean and sea pollution, a CFD approach to multi-component fluid motion phenomena,computer simulation of environmental fluids over complex topographies, and mathematical models of environmentalfluids and development of environmental restoration technology by means of plants and bacteria. Professor Oharu hasbeen working also in the field of medicine and biology, with projects such as the development of mathematical modelsdescribing the dynamics of host–pathogen interactions with HIV virus and the process of disease progression, as wellas a mathematical approach to population dynamics and computer simulation with the aid of statistical data analysis.

0377-0427/$ - see front matter © 2006 Elsevier B.V. All rights reserved.doi:10.1016/j.cam.2006.04.022

2 Preface / Journal of Computational and Applied Mathematics 204 (2007) 1–2

Professor Oharu has held positions: as Full Professor at Waseda University, Tokyo, from 1979 to 1982, as chair offunctional analysis at Hiroshima University from 1982 until 2000, and is now on the faculty of Chuo University, Tokyo.

In selecting papers for this special issue, our primary focus has been to obtain papers with algorithms applicableto many different areas of applied mathematics. We have applications to complex networks, semiconductor physics,bioinformatics, mathematical biology and medicine, financial engineering, etc. In addition, we have several papersdealing with fundamental improvements in certain useful algorithms and their implementations.

As Guest Editors of this Special Issue we would like to thank Professor Erkki. J. Brändas for his invaluable assistancedealing with many different aspects. We also greatly appreciate the help and encouragement received from Prof. L.Wuytack (Editor, JCAM).

Guest EditorJ. Vigo-Aguiar

Universidad de Salamanca, SpainE-mail address: [email protected]

Guest Co-EditorB.A. Wade

University of Wisconsin-Milwaukee, SpainE-mail address: [email protected]