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 Expert  721775

Expert in Network Architecture, Design and Analysis


Available for your Consulting and Expert Witness Needs

New Jersey (NJ)
USA
Education Work History Career AccomplishmentsPublicationsConsulting Services Expert Witness

Summary of Expertise:

Listed with other top experts in: 

Expert taught graduate courses in probability and stochastic modeling as an Adjunct Professor of Computer Science at Steven's Institute of Technology in Hoboken, NJ. He has used the concepts in the fields of Probability, Statistics and Stochastic Modeling extensively in his research over the last twenty years. In the area of algorithmic solutions to stochastic models, queueing theory, and applied probability, he introduced the now popular Markovian Arrival Process (MAP) as a versatile and tractable class which includes both renewal and non-renewal point processes and has developed algorithms to apply these results to real network traffic for engineering and end-user performance assessment. Expert drastically simplified analysis and algorithms for a large class of complex queueing models (BMAP/G/1 queue), which also include multiplexed, highly correlated arrival streams. He contributed to the development of algorithms for numerically inverting multidimensional Laplace-Stieltjes transforms and/or probability generating functions (with an important application of allowing numerical computations to be performed for various transient queueing models).
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binomial mathematical distribution

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discrete distribution function

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failure rate

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performance analysis

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probability

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probability distribution

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probability theory

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reliability

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skewed density function

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stochastic process

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exponential density function

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histogram

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Markov process

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mathematical model

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normal density function

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normal distribution

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Poisson density function

While at Bell Laboratories, Expert defined an overall control architecture for Broadband ISDN/ATM, incorporating end-to-end flow control, traffic shaping capabilities and higher layer control functions, portions of which have been incorporated into inter-national standards. He used exact and approximate models to quantified the multiplexing gain for a large number of bursty sources and the impact on engineering of ATM networks. Using exact models, he demonstrated that predictions based on the popular notions of effective bandwidth could be arbitrarily poor. He proposed more accurate approximations and performed analytic modeling to assess the effectiveness of several selective cell discard mechanisms for congestion control in broadband networks.
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packet switching system

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broadband communication


Show Secondary and Basic Areas of Expertise
Localities:
Expert may consult nationally and internationally, and is also local to the following cities: New York, New York;  Yonkers, New York;  Newark, New Jersey;  Jersey City, New Jersey;  Paterson, New Jersey;  Elizabeth, New Jersey;  Bridgeport, Connecticut;  New Haven, Connecticut;  Stamford, Connecticut;  and Philadelphia, Pennsylvania.

Education:
Year   Degree   Subject   Institution   Honors
1981   Ph.D.   Operations Research   University of Delaware   Awarded the Allan P Colburn Prize for best dissertation in the Engineering and Mathematical Sciences
1978   M.S.   Statistics   University of Delaware  
1976   B.S.   Mathematics   Towson University   Won the Mary Hudson Scarborough Award for Excellence in Mathematics

Work History:
Years   Employer   Title   Responsibilities

1994 to

 

(Undisclosed Consulting Company)

 

Principal Consultant

 

Expert is responsible for the end-to-end performance, reliability and availability analysis of wireless, IP, Broadband and satellite systems. He supervises simulation and load testing activities to assess the capacity and scalability of various telecommunication systems. He has developed analytic traffic models for bursty IP and broadband traffic and used these to develop traffic engineering and network sizing algorithms.

Selected Clients: Allied Riser Communications, Astrolink International Ltd., AT&T Laboratories, A. T. Kearney, Exigent International, Fairfield Resources International, Kenyon & Kenyon.

1981 to 1994

 

Bell Laboratories

 

Distinguished Member of Technical Staff

 

Expert defined an overall control architecture for Broadband ISDN/ATM, incorporating end-to-end flow control, traffic shaping capabilities and higher layer control functions, portions of which have been incorporated into inter-national standards.


Career Accomplishments:
Associations/Societies

Expert is a Senior Member of IEEE. He is also belongs to INFORMS, ACM, and ICCA.

Professional Appointments

He was the former Associate Editor for Queueing Systems. He is a reviewer for National Science Foundation proposals and many scientific journals. He is a frequent speaker at international conferences and universities.

Awards/Recognition

He received the Mary Hudson Scarborough Award for Excellence in Mathematics from Towson University in 1976. He received the Allan P. Colburn Prize for best dissertation in Engineering and Mathematical Sciences from the University of Delaware in 1982. He is listed in "Who's Who in Frontier Science and Technology" and "American Men and Women in Science 1984."


Publications:
Publications and Patents Summary

He has over 50 papers published in scientific journals and has two patents.

Selected Publications and Publishers  
 - IEEE Journal on Selected Areas in Communications, Special Issue on Network Performance Evaluation, Institute of Electrical and Electronics Engineers (IEEE)  
 - Springer Verlag  
 - IEEE Transactions on Communications, Institute of Electrical and Electronics Engineers (IEEE)  
 - Ann. Appl. Prob.  
 - International Journal of Digital and Ana-log Communication Systems  

Consulting Services:
Selected Consulting Examples:
  • He provided end-to end performance, reliability and availability analysis of AT&T's Common Open IP Platform. He prescribed and analyzed end-to-end load testing to assess the capacity for IP services.
  • He reviewed ATM and wireless patents for potential infringements relating to particular clients.
  • Expert provided capacity planning methodologies and IP traffic modeling for high-speed transport to the desktop.
  • He provided capacity planning methodologies and service reliability modeling for an audioconferencing service provider.
Click the green button above to contact Expert for a free initial screening call regarding your expert consulting needs.  Expert is available for consulting to corporate, legal and government clients.  Remember, your initial screening call to speak with Expert is free.

Expert Witness:
Recent Litigation Client Requests:
  • Expert in computer forensics for consulting on computer log evidence and website traffic.
Click the green button above to contact Expert for a free initial screening call regarding expert testimony, litigation consulting and support, forensic services, or any related expert witness services.  A few litigation needs include product liability, personal injury, economic loss, intellectual property (patent, trademark, trade secret, copyright), and insurance matters.  Remember, your initial screening call to speak with Expert is free.

International Experience:
Years   Country / Region   Summary
1998 to 1998   London, Tokyo, Melbourne, Austrailia   He led the performance section of the first phase of a technical due diligence of an international satellite company.
1999 to 1999   London, Tokyo, Melbourne, Austrailia   He led the performance section of the second phase of a technical due diligence of an international satellite company.

Additional Skills and Services:
Training/Seminars

He taught graduate level courses in probability and stochastic processes at the Stevens Institute of Technology.


 

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