Raj Jain (born 17 August 1951) is a professor of

Computer Science Computer science is the study of computation, information, and automation. Computer science spans Theoretical computer science, theoretical disciplines (such as algorithms, theory of computation, and information theory) to Applied science, ...

and

Engineering Engineering is the practice of using natural science, mathematics, and the engineering design process to Problem solving#Engineering, solve problems within technology, increase efficiency and productivity, and improve Systems engineering, s ...

in the Washington University School of Engineering and Applied Science at Washington University in St. Louis,

Missouri Missouri (''see #Etymology and pronunciation, pronunciation'') is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. Ranking List of U.S. states and territories by area, 21st in land area, it border ...

Education

Dr. Jain obtained a Ph.D. in Applied Mathematics (

) from

Harvard University Harvard University is a Private university, private Ivy League research university in Cambridge, Massachusetts, United States. Founded in 1636 and named for its first benefactor, the History of the Puritans in North America, Puritan clergyma ...

, Cambridge, Massachusetts in 1978, an M.E. in Automation from

Indian Institute of Science The Indian Institute of Science (IISc) is a Public university, public, Deemed university, deemed, research university for higher education and research in science, engineering, design, and management. It is located in Bengaluru, Karnataka. The ...

Bangalore, India in 1974, and a B.E. in Electrical Engineering from

Awdhesh Pratap Singh University Awadhesh Pratap Singh University is a state university in Rewa, India, Rewa, Madhya Pradesh. The university was named after Awadhesh Pratap Singh, Captain Awadhesh Pratap Singh, a politician and an activist. It is a co-educational higher educat ...

, Rewa, Madhya Pradesh, India in 1972.

Affiliations

Until 2005 he was the Chief Technology Officer and Co-Founder of Nayna Networks, Inc. – a next generation telecommunications systems company in San Jose, CA. Prior to that he was a professor of Computer and Information Sciences at the

Ohio State University The Ohio State University (Ohio State or OSU) is a public university, public Land-grant university, land-grant research university in Columbus, Ohio, United States. A member of the University System of Ohio, it was founded in 1870. It is one ...

Columbus, Ohio Columbus (, ) is the List of capitals in the United States, capital and List of cities in Ohio, most populous city of the U.S. state of Ohio. With a 2020 United States census, 2020 census population of 905,748, it is the List of United States ...

and a Senior Consulting Engineer at

Digital Equipment Corporation Digital Equipment Corporation (DEC ), using the trademark Digital, was a major American company in the computer industry from the 1960s to the 1990s. The company was co-founded by Ken Olsen and Harlan Anderson in 1957. Olsen was president until ...

in Littleton, Massachusetts. He was also a visiting scientist at

Massachusetts Institute of Technology The Massachusetts Institute of Technology (MIT) is a Private university, private research university in Cambridge, Massachusetts, United States. Established in 1861, MIT has played a significant role in the development of many areas of moder ...

in 1983, 1985, and 1987. He has been a professor at Washington University in St. Louis,

since 2005.

Research contributions

Dr. Jain is the co-inventor of the DECbit scheme for

congestion avoidance Network congestion in data networking and queueing theory is the reduced quality of service that occurs when a network node or link is carrying more data than it can handle. Typical effects include queueing delay, packet loss or the blocking of ...

in computer networksDEC-bit Patent
/ref> which has been adapted for implementation in Frame Relay networks as forward explicit congestion notification (FECN), ATM Networks as Explicit Forward Congestion Indication ( EFCI), and

TCP/IP The Internet protocol suite, commonly known as TCP/IP, is a framework for organizing the communication protocols used in the Internet and similar computer networks according to functional criteria. The foundational protocols in the suite are ...

networks as Explicit Congestion Notification (ECN). He is also the co-inventor of the Additive Increase Multiplicative Decrease ( AIMD) principle used for traffic management in computer networks and Jain's fairness index.Analysis of the increase and decrease algorithms for congestion avoidance in computer networks
/ref>
/ref> His work on timeout based

congestion control Network congestion in data networking and queueing theory is the reduced quality of service that occurs when a network node or link is carrying more data than it can handle. Typical effects include queueing delay, packet loss or the blocking of ...

influenced the design of the slow start algorithm in

networks.A timeout-based congestion control scheme for window flow-controlled networks
/ref> Congestion avoidance and control
/ref>

Publications

He is author of four books. His second book ''The Art of Computer Systems Performance Analysis'' published by

Wiley Interscience John Wiley & Sons, Inc., commonly known as Wiley (), is an American multinational publishing company that focuses on academic publishing and instructional materials. The company was founded in 1807 and produces books, journals, and encyclope ...

won the 1991 ''Best Advanced How-to Book, Systems'' award from Computer Press Association.The Art of Computer Systems Performance Analysis: Techniques for Experimental Design, Measurement, Simulation, and Modeling
/ref>

References

{{DEFAULTSORT:Jain, Raj American computer scientists American technology writers Researchers in distributed computing Fellows of the IEEE 1996 fellows of the Association for Computing Machinery Harvard John A. Paulson School of Engineering and Applied Sciences alumni Indian Institute of Science alumni Indian emigrants to the United States Technology evangelists 21st-century American engineers 1951 births Living people Writers from St. Louis Businesspeople from St. Louis American Jains Inventors from Missouri American academics of Indian descent Washington University in St. Louis faculty Ohio State University faculty People from Satna