Speakers

Prof. Kok Lay Teo
John Curtin Distinguished Emeritus Professor, Curtin University, Australia
Professor and Associate Dean (Research & Postgraduate Studies), Sunway University, Malaysia
Academician of The International Academy for Systems and Cybernetic Sciences (IASCYS)
a Fellow of the Asian-Pacific Artificial Intelligent Association (AAIA)
a Fellow of The Australian Mathematical Society (AustMS)
a Senior Member of IEEE (Life)

Professor Teo received his Ph.D. degree in Electrical Engineering from the University of Ottawa, Canada. He is a John Curtin Distinguished Emeritus Professor at Curtin University, Australia, and a Professor and Associate Dean (Research & Postgraduate Studies) at the School of Mathematical Sciences, Sunway University, Malaysia. He is an Academician of The International Academy for Systems and Cybernetic Sciences (IASCYS), a Fellow of the Asian-Pacific Artificial Intelligent Association (AAIA), a Fellow of The Australian Mathematical Society (AustMS), and a Senior Member of IEEE (Life). He was with the Department of Applied Mathematics, University of New South Wales, Australia, the Department of Industrial and Systems Engineering, National University of Singapore, Singapore, the Department of Mathematics, the University of Western Australia, Australia, and the Department of Mathematics and Statistics, Curtin University, Australia. He then took up the position of Chair Professor of Applied Mathematics and Head of the Department of Applied Mathematics at the Hong Kong Polytechnic University from December 1998 to December 2004. He returned to Curtin University as a Professor of Applied Mathematica and Head of the Department of Mathematics and Statistics from January 2005 to December 2010. He was John Curtin Distinguished Professor at Curtin University from January 2011 until his retirement in November 2019. He is now John Curtin Distinguished Emeritus Professor at Curtin University.

He was a member of the Australian Research Council’s (ARC) Mathematical, Information, and Computing Sciences Research Evaluation Committee for the 2010 and 2015 rounds of Excellence in Research for Australia (ERA). Professor Teo has published 6 books and over 550 SCI-listed journal papers. Details of his latest book are: Kok Lay Teo, Bin Li, Changjun Yu and Volker Rehbock, Applied and Computational Optimal Control: A Control Parameterization Approach, Springer Optimization and Its Application 171, 2021. He has a software package, MISER3.3, for solving constrained optimal control problems. His current editorial positions include serving as Editor-in-Chief of the Journal of Industrial and Management Optimization; and as a member of the editorial board of several journals such as Automatica, Journal of Global Optimization, Journal of Optimization Theory and Applications, Optimization and Engineering, Discrete and Continuous Dynamic Systems, Optimization Letters, and Applied Mathematical Modelling. His research interests include theoretical and computational aspects of optimal control and optimization, and their practical applications, such as in signal processing in telecommunications, process control, and industrial and management optimization.

Speech Title: Optimal Control Computation for Nonlinear Switched Systems
Abstract: Switched systems operate by switching among various modes or subsystems. This talk considers optimal control problems governed by nonlinear switched systems in which the mode dynamics are described by nonlinear differential equations. A computational method for computing the optimal control for this optimal control problem is presented. This computational method is based on some key ideas in optimal control computation, which include control parameterization, time-scaling transformation, and the constraint transcription method. Two real-world practical examples are discussed.

Prof. Haydar Akca
Abu DhabiUniversity, UAE

Prof. Dr. Lazim Abdullah
Universiti Malaysia Terengganu, Malaysia

Lazim Abdullah is a Professor of Computational Mathematics at the Faculty of Ocean Engineering Technology and Informatics, Universiti Malaysia Terengganu. He obtained his first degree from University of Malaya, in June 1984 and a master’s degree from the Universiti Sains Malaysia in 1999. He received his Ph.D from the Universiti Malaysia Terengganu, in 2004. His research and expertise focuses on fuzzy set theory of mathematics, decision making, applied statistics,  and their applications to social ecology, environment, health sciences and management.   His research findings have been published in more than 360 publications including refereed journals, conference proceedings, chapters in book, monographs, and textbooks. He was ranked among the world’s top 2% scientists for single year 2019 by Stanford University in the field of artificial intelligence and image processing. Currently, he is the Head of Data and Digital Sciences Research Cluster at the Universiti Malaysia Terengganu.  Prof Lazim is a member of the IEEE Computational Intelligence Society, and  a member of International Society on Multiple Criteria Decision Making.

Speech Title:Developing interval type-2 fuzzy moving average control charts
Abstract: Previous literature suggests that fuzzy control charts are more sensitive than conventional one hence, it provides better quality and conformance of products. However, it is known that much of the data used in the manufacturing sector cannot be expressed by type-1 fuzzy numbers and some of it is more suitable to be expressed in type-2 fuzzy numbers. This paper aims to develop interval type-2 fuzzy moving average (IT2F-MA) control charts by incorporating interval type 2 trapezoidal fuzzy numbers as input data for the case of known and unknown standard deviations. To verify the performance of the proposed control chart, normal distribution based-average run length (ARL) was computed and compared to type-1 fuzzy MA charts and conventional MA charts. Twenty samples with a sample size of six of fertilisers’ production were examined to identify the defects. Based on the conventional MA chart, 8 out of 20 samples were “out of control”. On the other hand, the type-1 fuzzy MA chart found 10 defects, whereas the interval type-2 fuzzy MA chart found 15 samples to be defectives. Thus, we can conclude that interval type-2 fuzzy chart is more sensitive and takes a lesser number of observations to identify the shift in the process. In addition, the ARL test showed that interval type-2 fuzzy MA outperformed the other control charts under the comparison of ARL. The ability is attributed to the introduction of interval type-2 fuzzy numbers to the MA and the explicit formula of ARL where the quality of fertilisers production can be improved.

Prof. Xiaojun Yang(杨小军）
State Key Laboratory for Geo-Mechanics and Deep Underground Engineering, and School of Mathematics, China University of Mining and Technology, Xuzhou, China
Department of Mathematics, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
Department of Mathematics, College of Science, Kyung Hee University, Seoul, Republic of Korea

Dr. Xiao-Jun Yang, a full Professor of Applied Mathematics and Mechanics, at State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, China. His scientific interests include Mathematical Physics, Fractional Calculus and Applications, Fractals, Mechanics, Number Theory, Integral Transforms and Special Functions. He is a distinguished scientist in King Abdulaziz University (KAU, Saudi Arabia) and eminent scholar in Kyung Hee Univeristy (KHU, Republic of Korea). He has received 2022 Obada Prize for Distinguished Scientist (Egypt, 2022), Atanasije Stojkovič Medal (Serbia, 2021), Abel Award for Young Scientist (Turkey, 2020), Clarivate Analytics [Thomson-Reuters] (Web of Science) Highly Cited Researcher in Mathematics, et al.

Speech Title: A New Challenge in the Field of Mathematics
Abstract: The main purpose of the report is to suggest an entire function associated with the completed Riemann zeta function. The entire function on the critical line is expressed by the Fourier cosine integral. Compared with the Riemann hypothesis, it is showed that a hypothesis is that its zeros have the real part equal to 0.5. This is a new challenge in the field of mathematics showed in the Fractals Challenge of the journal Fractals.

Prof. Lukasz T. Stepien
The Pedagogical University of Cracow, Poland

I was born in 1975, in Kraków (Poland), and I was studying physics at the Jagiellonian University (Kraków) in 1994 - 1999, I graduated in 1999 (Master thesis: „Some examples of dynamics of certain domain walls”). In 2003 I gained PhD (PhD thesis: “Bogomolny decomposition in the context of the concept of strong necessary conditions”). In 2004 I finished the postgraduate studies “Software engineering” at The AGH University of Kraków. I have been working at The Pedagogical University of Cracow, since 2004. My scientific activities: theoretical physics, applied mathematics, mathematical logic, foundations of mathematics.

Assoc. Prof. Liu Mei Feng
Xiamen University Malaysia

Dr. Mei-Feng Liu is an Associate Professor of Department of Mathematics at Xiamen University Malaysia (XMUM) in Selangor, Malaysia. She received her Ph.D. in Applied Mathematics from the Chung-Hsing University at Taichung, Taiwan R.O.C. in 2001. She joined to the Department of Applied Mathematics at I-Shou University at Kaohsiung, Taiwan in 2001 as an Assistant Professor and then promoted to Associate Professor in 2005. She retired from I-Shou University and joined the Xiamen University Malaysia in 2017. Her scientific interests include Mathematical Modelling, Composite Material, Vibration Analysis, Scientific Computation.

Abstract: New governing equation for the transverse vibration of fully coupled thermo-magneto-electro-elastic (TMEE) thin laminates accounting for entropy constitutive equation is derived in this paper. In particular, free vibration for the bi-layered BaTiO3-CoFe2O4 composite and the three-layered laminate made of CoFe2O4 / BaTiO3 stacked on elastic Epoxy are implemented as demonstration examples. Complete constitutive equations regarding the elastic stresses, electric displacements, magnetic fluxes as well as the entropy of the thermodynamic system are revisited, their corresponding alternative forms are further introduced so that Navier elastic equation, the Gauss’ laws in the absence of free charges and currents, and the steady-state heat equation can be applied. Based on the Kirchhoff thin plate theory in accordance with the non-zero out-of-plane field assumptions, bending problem for the transversely isotropic TMEE rectangular plates is investigated, governing equation in terms of the transverse displacement is then presented in a rather compact form. The effective material coefficients for the TMEE laminate are presented and expressed via the volume fraction (vf) of either the piezoelectric phase constituent or the piezomagnetic phase constituent. Natural frequencies of the proposed TMEE coupling thin plates are analytically evaluated, and the effects of different volume fraction on the natural frequency are discussed; in addition, the existence of elastic substrate Epoxy and its effect are further investigated.

Prof. Hesham Elkaranshawy
Alexandria University, Egypt

He received his BSc degree (distinction with degree of honor) in mechanical power engineering and MSc degree in Engineering Mathematics from Alexandria University, Alexandria, Egypt, in 1983 and 1988 respectively. He received his PhD degree in Mechanical Engineering from McMaster University, Hamilton, Ontario, Canada, in 1995. During 1995-1996 he joined CAE Electronics, Montreal, Canada, as a finite element specialist where he involved in design of the company’s flight simulators and in its role in the world space station project. He became an assistant professor at Department of Engineering Mathematics and Physics, Alexandria University in 1996. In 1998 he established Dynamica Engineering Consultants, Giza, Egypt. In 2001, Dr. Elkaranshawy became an assistant professor at Department of Mechanical Engineering, Yanbu Industrial College, Royal Commission for Jubail and Yanbu, Saudi Arabia. Since 2010 he went back to Alexandria University, and he is now a professor at Department of Engineering Mathematics and Physics. He was a board member of the Egyptian Syndicate for Engineers in Behera province. He published about forty scientific papers, which can be seen in Google scholar: https://scholar.google.com/citations?user=mKVrJ44AAAAJ&hl=en, most of them are in internationally respected journals. His research interests include multibody dynamics, robot dynamics, contact-impact dynamics, finite element modeling, wave propagation, fault detection, and nonlinear systems. Most of his current research is in the field of mathematical biology. Some interesting subjects have been investigating in cardiology, neurodynamics, kinesiology, tumor-immune interaction, and hepatitis C virus infection.

Speakers in 2022