Guanrong Chen
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Guanrong Chen () or Ron Chen is a Chinese
mathematician A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, structure, space, models, and change. History On ...
who made contributions to
Chaos theory Chaos theory is an interdisciplinary area of scientific study and branch of mathematics focused on underlying patterns and deterministic laws of dynamical systems that are highly sensitive to initial conditions, and were once thought to have co ...
. He has been the chair professor and the founding director of the Centre for Chaos and Complex Networks at the
City University of Hong Kong City University of Hong Kong (CityU) is a world-class public research university located in Kowloon Tong, Hong Kong. It was founded in 1984 as City Polytechnic of Hong Kong and became a fully accredited university in 1994. Currently, CityU is ...
since 2000. Prior to that, he was a tenured full professor at the
University of Houston The University of Houston (UH) is a Public university, public research university in Houston, Texas. Founded in 1927, UH is a member of the University of Houston System and the List of universities in Texas by enrollment, university in Texas ...
,
Texas Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') is a state in the South Central United States, South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2 ...
. Chen was elected Member of the
Academy of Europe The Academia Europaea is a pan-European Academy of Humanities, Letters, Law, and Sciences. The Academia was founded in 1988 as a functioning Europe-wide Academy that encompasses all fields of scholarly inquiry. It acts as co-ordinator of Europea ...
in 2014, elected Fellow of
The World Academy of Sciences The World Academy of Sciences (TWAS) is a merit-based science academy established for developing countries, uniting 1,000 scientists in some 70 countries. Its principal aim is to promote scientific capacity and excellence for sustainable devel ...
in 2015, and elected
IEEE The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operation ...
Fellow in 1997. He is currently the
editor-in-chief An editor-in-chief (EIC), also known as lead editor or chief editor, is a publication's editorial leader who has final responsibility for its operations and policies. The highest-ranking editor of a publication may also be titled editor, managing ...
for the
International Journal of Bifurcation and Chaos ''International Journal of Bifurcationand Chaos in Applied Sciences and Engineering'' (often abbreviated as ''IJBC'') is a peer-reviewed scientific journal published by World Scientific. It was established in 1991 and covers chaos theory and nonlin ...
. He is known for his contributions to
Chaos theory Chaos theory is an interdisciplinary area of scientific study and branch of mathematics focused on underlying patterns and deterministic laws of dynamical systems that are highly sensitive to initial conditions, and were once thought to have co ...
and
Bifurcation theory Bifurcation theory is the mathematical study of changes in the qualitative or topological structure of a given family of curves, such as the integral curves of a family of vector fields, and the solutions of a family of differential equations. Mo ...
, including the Chen attractor,http://www.ee.cityu.edu.hk/~gchen/pdf/Lorenz-Chen.pdf Yet another chaotic attractor
/ref> a kind of dynamical system
attractor In the mathematical field of dynamical systems, an attractor is a set of states toward which a system tends to evolve, for a wide variety of starting conditions of the system. System values that get close enough to the attractor values remain ...
named after him (see
Multiscroll attractor In the mathematics of dynamical systems, the double-scroll attractor (sometimes known as Chua's attractor) is a strange attractor observed from a physical electronic chaotic circuit (generally, Chua's circuit) with a single nonlinear resistor (se ...
).


Early life

In 1948, Chen Guanrong was born in
Guangzhou Guangzhou (, ; ; or ; ), also known as Canton () and alternatively romanized as Kwongchow or Kwangchow, is the capital and largest city of Guangdong province in southern China. Located on the Pearl River about north-northwest of Hong Kon ...
,
China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...
. In 1978, he enrolled in the Guangzhou
Sun Yat-sen University Sun Yat-sen University (, abbreviated SYSU and colloquially known in Chinese as Zhongda), also known as Zhongshan University, is a national key public research university located in Guangzhou, Guangdong, China. It was founded in 1924 by and nam ...
. In 1981 he graduated with a master's degree in
computational mathematics Computational mathematics is an area of mathematics devoted to the interaction between mathematics and computer computation.National Science Foundation, Division of Mathematical ScienceProgram description PD 06-888 Computational Mathematics 2006 ...
. He then studied in the US and in 1987 earned a PhD in applied math from
Texas A&M University Texas A&M University (Texas A&M, A&M, or TAMU) is a public, land-grant, research university in College Station, Texas. It was founded in 1876 and became the flagship institution of the Texas A&M University System in 1948. As of late 2021, T ...
.


Academia

From 1987 to 1990 he worked as a professor at
Rice University William Marsh Rice University (Rice University) is a Private university, private research university in Houston, Houston, Texas. It is on a 300-acre campus near the Houston Museum District and adjacent to the Texas Medical Center. Rice is ranke ...
. From 1990 to 1999 he worked at
University of Houston The University of Houston (UH) is a Public university, public research university in Houston, Texas. Founded in 1927, UH is a member of the University of Houston System and the List of universities in Texas by enrollment, university in Texas ...
and became a full tenured professor. In 2000, he became a chair professor at the
City University of Hong Kong City University of Hong Kong (CityU) is a world-class public research university located in Kowloon Tong, Hong Kong. It was founded in 1984 as City Polytechnic of Hong Kong and became a fully accredited university in 1994. Currently, CityU is ...
, founding the Centre for Chaos and Complex Networks. He conducts research on
chaos Chaos or CHAOS may refer to: Arts, entertainment and media Fictional elements * Chaos (''Kinnikuman'') * Chaos (''Sailor Moon'') * Chaos (''Sesame Park'') * Chaos (''Warhammer'') * Chaos, in ''Fabula Nova Crystallis Final Fantasy'' * Cha ...
,
control theory Control theory is a field of mathematics that deals with the control of dynamical systems in engineered processes and machines. The objective is to develop a model or algorithm governing the application of system inputs to drive the system to a ...
, bifurcations,
nonlinear dynamics In mathematics and science, a nonlinear system is a system in which the change of the output is not proportional to the change of the input. Nonlinear problems are of interest to engineers, biologists, physicists, mathematicians, and many other ...
,
complex systems A complex system is a system composed of many components which may interact with each other. Examples of complex systems are Earth's global climate, organisms, the human brain, infrastructure such as power grid, transportation or communication s ...
, etc.


IEEE

From 1999 to 2001, he served as the chairman for the
IEEE The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operation ...
Nonlinear Circuits and Systems Technical Committee. Since 2008, he has served as Editor in Chief of
IEEE The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operation ...
Circuits and Systems Magazine. Since 2010, he has served as Editor in Chief of
International Journal of Bifurcation and Chaos ''International Journal of Bifurcationand Chaos in Applied Sciences and Engineering'' (often abbreviated as ''IJBC'') is a peer-reviewed scientific journal published by World Scientific. It was established in 1991 and covers chaos theory and nonlin ...
. Before, from 1991 to 2009, he was editor for the International Journal of Bifurcation and Chaos. From 2004 to 2007, he was Deputy Editor-in-Chief for the IEEE Transactions on Circuits and Systems. From 2004 to 2005, he was an editor for the IEEE Transactions on Automatic Control.


Journals and conferences

From 2008 to 2009, he was Deputy Editor-in-Chief for the International Journal of Circuits Theory and Applications as well as editor for the International Journal of Circuits Theory and Applications. From 2006 to 2008, he was editor for the Journal of Control Science and Engineering. Since 1995, he has been editor for the
Chinese Academy of Sciences The Chinese Academy of Sciences (CAS); ), known by Academia Sinica in English until the 1980s, is the national academy of the People's Republic of China for natural sciences. It has historical origins in the Academia Sinica during the Republ ...
Journal on Control Theory and Applications. From 2001 to 2014, he was editor for the Journal of Systems Science and Complexity. From 2009 to 2014, he served as the chairman for the Chinese Society's Complex Systems and Networks Committee.


Research

He is known for the Chen attractor, Lu Chen attractor, and other works on
Multiscroll attractor In the mathematics of dynamical systems, the double-scroll attractor (sometimes known as Chua's attractor) is a strange attractor observed from a physical electronic chaotic circuit (generally, Chua's circuit) with a single nonlinear resistor (se ...
s. He conducts research on
chaos Chaos or CHAOS may refer to: Arts, entertainment and media Fictional elements * Chaos (''Kinnikuman'') * Chaos (''Sailor Moon'') * Chaos (''Sesame Park'') * Chaos (''Warhammer'') * Chaos, in ''Fabula Nova Crystallis Final Fantasy'' * Cha ...
,
control theory Control theory is a field of mathematics that deals with the control of dynamical systems in engineered processes and machines. The objective is to develop a model or algorithm governing the application of system inputs to drive the system to a ...
, bifurcations,
nonlinear dynamics In mathematics and science, a nonlinear system is a system in which the change of the output is not proportional to the change of the input. Nonlinear problems are of interest to engineers, biologists, physicists, mathematicians, and many other ...
,
complex systems A complex system is a system composed of many components which may interact with each other. Examples of complex systems are Earth's global climate, organisms, the human brain, infrastructure such as power grid, transportation or communication s ...
, etc.


Chen attractor

Chen discovered the Chen equations, a system of coupled
differential equations In mathematics, a differential equation is an equation that relates one or more unknown functions and their derivatives. In applications, the functions generally represent physical quantities, the derivatives represent their rates of change, an ...
that produce the Chen's attractor, a type of
Lorenz attractor The Lorenz system is a system of ordinary differential equations first studied by mathematician and meteorologist Edward Lorenz. It is notable for having chaotic solutions for certain parameter values and initial conditions. In particular, the Lo ...
. The equations that govern the Chen system are: : \frac = a (y - x) : \frac = (c- a)x - xz+cy : \frac = xy - bz where a=35, b=3, c=28.


Publications

Chen Guanrong has published over 650 papers and over 300 abstracts on chaos theory and related fields. He currently has over 60,000 citations, making him one of the most cited leaders in the field. * Chen G., Ueta T. Yet another chaotic attractor. Journal of Bifurcation and Chaos, 1999 9:1465. * Chen, Guanrong; Jinhu Lu (2006). "GENERATING MULTISCROLL CHAOTIC ATTRACTORS: THEORIES, METHODS AND APPLICATIONS" (PDF). ''International Journal of Bifurcation and Chaos''. *Fangyue Chen, Guolong He, Xiubin Xu, and Guanrong Chen, "Implementation of Arbitrary Boolean Functions via CNN" (a paper on
Cellular neural network In computer science and machine learning, cellular neural networks (CNN) or cellular nonlinear networks (CNN) are a parallel computing paradigm similar to neural networks, with the difference that communication is allowed between neighbouring units ...
s). Books * Kalman Filtering with Real-Time Applications * Linear Systems and Optimal Control * Hopf Bifurcation Analysis: A Frequency Domain Approach * From Chaos to Order: Methodologies, Perspectives and Applications *Dynamics of the Lorenz System Family: Analysis, Control and Synchronization *Complex Networks: Models, Dynamics and Control *Integration of
Fuzzy Logic Fuzzy logic is a form of many-valued logic in which the truth value of variables may be any real number between 0 and 1. It is employed to handle the concept of partial truth, where the truth value may range between completely true and completely ...
and Chaos Theory *
Evolutionary Algorithms In computational intelligence (CI), an evolutionary algorithm (EA) is a subset of evolutionary computation, a generic population-based metaheuristic optimization algorithm. An EA uses mechanisms inspired by biological evolution, such as reproduc ...
and Chaotic Systems


Awards and honors

* IEEE Fellow (1997) *Honorary Doctorate of
University of Le Havre Le Havre Normandy University ( French: Université Le Havre Normandie) is a French university located in Le Havre. Along with five other schools, Le Havre Normandy University is a member of Normandy University, an association of universities and h ...
, Normandy, France (2014) *Honorary Doctorate (Doctoris Honoris Causa) of
Saint Petersburg State University Saint Petersburg State University (SPBU; russian: Санкт-Петербургский государственный университет) is a public research university in Saint Petersburg, Russia. Founded in 1724 by a decree of Peter the G ...
, Russia (2011) * Euler Gold Medal (2011) * SCI Highly Cited Researcher in Engineering, Thomson Reuters (since November 2009)http://www.ee.cityu.edu.hk/~gchen/pdf/GChen%20ISI%20Highly%20Cited%20Researcher.pdf *Harden-Simons Annual Prize for Outstanding Journal Paper, American Society of Engineering Education (1998) *Best Paper Award (2002), Institute of Information Theory and Automation, Academy of Sciences of the Czech Republic *IEEE M. Barry Carlton Best Annual Paper Award, IEEE Aerospace and Electronic Systems Society (2001) *IEEE Guillemin-Cauer Best Annual Paper Award, IEEE Circuits and Systems Society (2005) *IET Premium Best Paper Award (2013) *State Natural Science Award, China (2008, 2012, 2016) *President's Award of City University of Hong Kong (2019) *Ho-Leung-Ho-Lee Science and Technology Award (2010) *Junior Faculty Research Excellence Award, University of Houston (1993)


Honorary professorships

Chen Guanrong has given lectures in more than 30 countries and holds
honorary professor Honorary titles (professor, reader, lecturer) in academia may be conferred on persons in recognition of contributions by a non-employee or by an employee beyond regular duties. This practice primarily exists in the UK and Germany, as well as in m ...
positions in many universities around the world, including but not limited to: *
Central Queensland University Central Queensland University (alternatively known as CQUniversity) is an Australian public university based in central Queensland. CQUniversity is the only Australian university with a campus presence in every mainland state. Its main campus ...
, Australia; *
University of Ballarat The University of Ballarat, Australia was a dual-sector university with multiple campuses in Victoria, Australia, including its main Ballarat campus, Melbourne, Sydney, and Adelaide that were authorized by the university to provide diploma, unde ...
, Australia; *
Universidad Nacional del Sur The National University of the South (in Spanish: ''Universidad Nacional del Sur'', UNS) is the largest national university in southern Argentina. Its motto is ''Ardua Veritatem'', which means "through the difficulties to the truth". The univers ...
, Argentina; * Chang-Jiang Chair Professor of
Peking University Peking University (PKU; ) is a public research university in Beijing, China. The university is funded by the Ministry of Education. Peking University was established as the Imperial University of Peking in 1898 when it received its royal charter ...
; *
Fudan University Fudan University () is a national public research university in Shanghai, China. Fudan is a member of the C9 League, Project 985, Project 211, and the Double First Class University identified by the Ministry of Education of China. It is als ...
; *
Tsinghua University Tsinghua University (; abbreviation, abbr. THU) is a National university, national Public university, public research university in Beijing, China. The university is funded by the Ministry of Education of the People's Republic of China, Minis ...
; *
University of Science and Technology of China A university () is an educational institution, institution of higher education, higher (or Tertiary education, tertiary) education and research which awards academic degrees in several Discipline (academia), academic disciplines. Universities ty ...
; *
Shanghai Jiao Tong University Shanghai Jiao Tong University (SJTU; ) is a public research university in Shanghai, China. The university is funded by the Ministry of Education of China. The university was established on April 8, 1896 as Nanyang Public School (南洋 ...
; *
Sun Yat-sen University Sun Yat-sen University (, abbreviated SYSU and colloquially known in Chinese as Zhongda), also known as Zhongshan University, is a national key public research university located in Guangzhou, Guangdong, China. It was founded in 1924 by and nam ...
; *
Tianjin University Tianjin University (TJU, ), formerly Peiyang University (), is a national public research university in Tianjin, China. The university was established in 1895 by Guangxu Emperor's royal charter to be the first university of China. It is now fun ...
; *
Zhejiang University Zhejiang University, abbreviated as ZJU or Zheda and formerly romanized as Chekiang University, is a national public research university based in Hangzhou, Zhejiang, China. It is a member of the prestigious C9 League and is selected into the na ...


See also

*
Multiscroll attractor In the mathematics of dynamical systems, the double-scroll attractor (sometimes known as Chua's attractor) is a strange attractor observed from a physical electronic chaotic circuit (generally, Chua's circuit) with a single nonlinear resistor (se ...


References

{{DEFAULTSORT:Chen, Guanrong Living people Academic staff of the City University of Hong Kong Educators from Guangdong Writers from Guangzhou Academic staff of Peking University Fellow Members of the IEEE Members of Academia Europaea Chinese science writers 1948 births Chaos theorists Rice University faculty Sun Yat-sen University alumni