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Leon O. Chua

Leon O. Chua is a engineering topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Leon O. Chua rather than just read about it. In short: Leon Ong Chua (; Chinese: 蔡少棠; pinyin: Cài Shǎotáng; Wade–Giles: Ts'ai Shao-t'ang; Pe̍h-ōe-jī: Chhòa Siáu-tông; born June 28, 1936) is a Chinese-American electrical engineer and computer scientist. He is a professor emeritus of electrical engineering and computer science at the University of California, Berkeley, which he joined in 1971.

Leon O. Chua — main illustration
Leon O. Chua — illustration

Key takeaways

  • Leon O. Chua belongs to engineering; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Leon O. Chua to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Leon O. Chua from memory before moving on to harder problems.

Reference excerpt

Leon Ong Chua (; Chinese: 蔡少棠; pinyin: Cài Shǎotáng; Wade–Giles: Ts'ai Shao-t'ang; Pe̍h-ōe-jī: Chhòa Siáu-tông; born June 28, 1936) is a Chinese-American electrical engineer and computer scientist. He is a professor emeritus of electrical engineering and computer science at the University of California, Berkeley, which he joined in 1971. He has contributed to nonlinear circuit theory and cellular neural network theory and is recognized as the "Father of Nonlinear Circuit Theory" or electronic devices from nonlinear components. He is the inventor and namesake of Chua's circuit one of the first and most widely known circuits to exhibit chaotic behavior, and was the first to conceive the theories behind, and postulate the existence of, the memristor. Thirty-seven years after he predicted its existence, a working solid-state memristor was created by a team led by R. Stanley Williams at Hewlett Packard. Alongside Tamas Roska, Chua also introduced the first algorithmically programmable analog cellular neural network (CNN) processor.

Early life and education Chua was born in the Philippines on June 28, 1936, to a Hoklo Chinese family. He and his twin sister grew up as Chinese Filipinos under the reign of the Empire of Japan during World War II. His parents immigrated from Jinjiang, Southern Fujian. In 1958, Chua earned his BS in electrical engineering from the Mapúa Institute of Technology in Manila, Philippines. He briefly taught at Mapúa for a year, before emigrating to the United States on a scholarship to the Massachusetts Institute of Technology, where he earned an MS in electrical engineering degree in 1961. He then earned a PhD from the University of Illinois, Urbana-Champaign, in 1964. His dissertation was titled, Nonlinear Network Analysis—The Parametric Approach. Chua has four daughters: Amy Chua (the eldest), a professor of law at Yale University; Katrin, a Professor of Medicine at Stanford University; Cynthia, a Special Olympics gold medalist; and Michelle, a Yale Law School graduate. In addition to his four daughters, Chua has seven grandchildren.

Career Chua was a member of the faculty at Purdue University from 1964 to 1970 before joining Berkeley in 1971. His current research interests include cellular neural networks, nonlinear networks, nonlinear circuits and systems, nonlinear dynamics, bifurcation theory, and chaos theory. He was the editor of The International Journal of Bifurcation and Chaos until 2009, and is now the honorary editor.

Awards and honors 2019 EDS Celebrated Member Prize 2020 Julius Springer Prize in Applied Physics. Member of the European Academy of Sciences 1997, http://www.ae-info.org/ae/User/Chua_Leon and Hungarian Academy of Sciences 2007. He was elected as Confrérie des Chevaliers du Tastevin in 2000. Doctor Honoris Causa from the École Polytechnique Fédérale de Lausanne, Switzerland (1983) Honorary doctorate from the University of Tokushima, Japan (1984) Honorary doctorate from the Technische Universität Dresden, Germany (1992) Doctor Honoris Causa from the Technical University of Budapest, Hungary (1994) Doctor Honoris Causa from the University of Santiago de Compostela, Spain (1995) Doctor Honoris Causa from the Goethe University Frankfurt, Germany (1996) Doctor Honoris Causa from the Gheorghe Asachi Technical University of Iaşi, Romania (1997) Doctor Honoris Causa from the University of Catania, Italy (2000) Doctor Honoris Causa from the AGH University of Science and Technology, Poland (2003) Docteur Honoris Causa (Honorary Doctorate), Doğuş University, Turkey (2005) Docteur Honoris Causa (Honorary Doctorate), Universite du Sud, Toulon, France, 2006 Doctor Honoris Causa from the University of Le Havre, France (2009) Honorary Doctorate, 2011.University of the West of England, England. Doctor Honoris Causa from the KU Leuven, Belgium (2013) Doctor of Science Honoris Causa from the Hong Kong Polytechnic University, Hong Kong (2014) Doctor Honoris Causa from the Polytechnic University of Turin, Italy (2015) IEEE Browder J. Thompson Memorial Prize Award (1967) IEEE Guillemin-Cauer Award (1972, 1985, 1989) IEEE W.R.G. Baker Prize Paper Award (1973), for the paper "Memristor: The Missing Circuit Element" in IEEE TRANSACTIONS on Circuit Theory, September 1971 IEEE Neural Networks Pioneer Award (2000) IEEE Gustav Robert Kirchhoff Award (2005), For seminal contributions to the foundation of nonlinear circuit theory, and for inventing Chua's Circuit and Cellular Networks, each spawning a new research area. M. E. Van Valkenburg Award (1995 and 1998) IEEE Circuits and Systems Society Vitold Belevitch Award (2007), For seminal contributions to nonlinear circuit theory, the first mathematically proven physical implementation of Chaos (Chua circuit), the local activity principle as the root of complexity, the cellular neural/nonlinear network principle and basic theory, and the qualitative theory of complexity in 1D cellular automata. 2010 Guggenheim Fellowship

References

External links Official website Some of IEEE publications by Chua

Illustrations

Leon O. Chua illustration

Worked examples

Example 1 — a first encounter with Leon O. Chua

Start with the simplest possible case. Write down what Leon O. Chua claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Leon O. Chua before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Leon O. Chua ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Leon O. Chua

In research
Leon O. Chua appears in engineering research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Leon O. Chua in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Leon O. Chua is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1936 births, American computer scientists, American electrical engineers, so understanding it makes those chapters shorter.
In everyday life
Look for Leon O. Chua outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Leon O. Chua in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Leon O. Chua means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Leon O. Chua out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Leon O. Chua in simple terms?

Leon Ong Chua (; Chinese: 蔡少棠; pinyin: Cài Shǎotáng; Wade–Giles: Ts'ai Shao-t'ang; Pe̍h-ōe-jī: Chhòa Siáu-tông; born June 28, 1936) is a Chinese-American electrical engineer and computer scientist. He is a professor emeritus of electrical engineering and computer science at the University of Califo…

Why does Leon O. Chua matter?

Because it connects several engineering ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Leon O. Chua?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Leon O. Chua.

Tags

  • 1936 births
  • American computer scientists
  • American electrical engineers
  • American people of Chinese descent
  • American twins
  • Chaos theorists
  • Electrical engineering academics
  • Fellows of the IEEE
  • Filipino emigrants to the United States
  • Filipino people of Chinese descent
  • Filipino twins
  • Grainger College of Engineering alumni

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