mathematics

John Baras

John Baras is a mathematics 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 John Baras rather than just read about it. In short: John S. Baras is a Greek-American electrical engineer and applied mathematician.

Key takeaways

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

Reference excerpt

John S. Baras is a Greek-American electrical engineer and applied mathematician. He is a Distinguished University Professor and the Lockheed Martin Chair in Systems Engineering at the University of Maryland, College Park. He is the founding director of the Institute for Systems Research, one of the first six National Science Foundation Engineering Research Centers. Baras is known for developing the algorithms and protocols that enabled broadband Internet over satellite, which led to the development of HughesNet and the creation of the Internet-over-satellite industry.

Education Baras received a Diploma in Electrical and Mechanical Engineering with highest honors from the National Technical University of Athens in 1970, where he was awarded the Ch. Chrysovergis Award as the outstanding graduating student from the Department of Electrical Engineering. He received an M.S. in 1971 and a Ph.D. in 1973, both in applied mathematics, from Harvard University.

Career Baras joined the University of Maryland in August 1973 as an assistant professor and rose through the ranks to full professor in 1982. In 1990, he was appointed to the endowed Lockheed Martin Chair in Systems Engineering. He was named Distinguished University Professor in 2018, the highest academic honor conferred by the University of Maryland. From 1985 to 1991, Baras served as the founding director of the Institute for Systems Research (originally called the Systems Research Center), established as a joint venture between the University of Maryland and Harvard University. The institute was one of the original six NSF Engineering Research Centers created in 1985. Since 1992, he has been the founding director of the Maryland Center for Hybrid Networks (HyNet), an industry-university-government consortium focusing on hybrid wireless networks with support from the Department of Defense, NASA, and industry. Baras holds visiting positions as Senior Research Scientist at the Royal Institute of Technology (KTH), Sweden, and the Technical University of Munich, Germany.

Research Baras's research interests include wireless networks, sensor networks, satellite communications, network security, stochastic systems, nonlinear control, and model-based systems engineering.

Internet over satellite Baras developed the algorithms and protocols for broadband Internet service over satellite, introducing and demonstrating the first working broadband Internet-over-satellite protocol in 1994. His innovations included "splitting the connection," "address spoofing," and "selective acknowledgment" to optimize TCP performance over high-latency satellite links. This work, conducted through the Center for Satellite and Hybrid Communication Networks (now HyNet) which he co-founded with colleague Anthony Ephremides, earned the 1994 Outstanding Invention of the Year Award from the University of Maryland. Baras's collaboration with Hughes Network Systems resulted in HughesNet, recognized as the largest-selling product ever developed with support from the Maryland Industrial Partnerships Program. His contributions enabled widespread satellite Internet connectivity for consumers, businesses, ships, aircraft, military networks, and rural and underdeveloped areas.

Awards and honors IEEE Fellow, 1984, "for contributions to distributed parameter systems theory, quantum and nonlinear estimation, and control of queuing systems" George S. Axelby Prize, IEEE Control Systems Society, 1980 Foreign Member, Royal Swedish Academy of Engineering Sciences, 2006 IEEE Simon Ramo Medal, 2017, "for exceptional contributions to the conception and commercialization of Internet-over-satellite systems, and for leadership in model-based engineering, systems science, and engineering research" Richard E. Bellman Control Heritage Award, American Automatic Control Council, 2017, "for innovative contributions to control theory, stochastic systems, and networks and academic leadership in systems and control" AIAA Aerospace Communications Award, American Institute of Aeronautics and Astronautics, 2018 Doctor Honoris Causa, National Technical University of Athens, 2018 Fellow, American Mathematical Society, 2019, "for contributions to the mathematical foundations and applications of systems theory, stochastic systems, stochastic control, network security and trust, mentoring and academic leadership" Fellow, Society for Industrial and Applied Mathematics Fellow, American Association for the Advancement of Science Fellow, National Academy of Inventors Fellow, International Federation of Automatic Control Fellow, American Institute of Aeronautics and Astronautics, 2020 A. James Clark School of Engineering Innovation Hall of Fame, 2016

References

Worked examples

Example 1 — a first encounter with John Baras

Start with the simplest possible case. Write down what John Baras claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In mathematics, 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 John Baras 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 John Baras 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 John Baras

In research: John Baras appears in mathematics 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 John Baras 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: John Baras is common in secondary-school and first-year university syllabi. It links to neighbouring topics American electrical engineers, American mathematicians, American people of Greek descent, so understanding it makes those chapters shorter.
In everyday life: Look for John Baras 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 John Baras in 20 minutes

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

Frequently asked questions

What is John Baras in simple terms?

John S. Baras is a Greek-American electrical engineer and applied mathematician.

Why does John Baras matter?

Because it connects several mathematics 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 John Baras?

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 John Baras.