Main /HomePage

Jonathan Sprinkle

Assistant Professor [cv] [publications]
Electrical and Computer Engineering
University of Arizona


The easiest way to reach me is by email:
sprinkle@ECE.Arizona.Edu
Note this is my actual email. I do not fear the spammers.


If you can't find me, I'm probably up in ECE 446, off finding good espresso, forgetting to post to my weblog, looking for good graduate students, or coming up with captions for my headshot.


Prospective Students and Hiring Information


"Why ECE @ UA?"

News

[More news...]


Biography

Dr. Jonathan Sprinkle is an Assistant Professor of Electrical and Computer Engineering at the University of Arizona. In 2009, he received the UA's Ed and Joan Biggers Faculty Support Grant for work in autonomous systems. Until June 2007, he was the Executive Director of the Center for Hybrid and Embedded Software Systems at the University of California, Berkeley. His research interests and experience are in systems control and engineering, through modeling and metamodeling, and he teaches in controls and systems modeling.

Dr. Sprinkle is a graduate of Vanderbilt University (PhD, MS) and Tennessee Technological University (BSEE). More biographies, and photos.


Next ECE Currents: Wednesday, 2/10, 2010

SpeakerTopic
Prof. Ricardo Sanfelice
Asst. Professor, AME
"Robust Stability Analysis of Hybrid Control Systems"
Driven by recent technological advances, hybrid systems have become prevalent
when describing complex systems with both continuous and discrete dynamics.
This ongoing trend has been the thrust for research on modeling, stability
analysis, control design, validation, verification, and simulation of hybrid
systems. These research efforts are also relevant in the design of advanced
control algorithms with mixed continuous/discrete dynamics, that is, hybrid
control systems. Even though hybrid control systems have been shown to enhance
the robustness properties of the closed-loop system in most applications, the
analysis and design for robustness of these systems have not been pursued in a
systematic manner due to the lack of formal tools for that purpose. Instead,
this has been carried out with tools suitable for the particular application of
study. In this short talk, we take a dynamical systems approach to modeling and
robust stability analysis of general hybrid systems. We introduce a mathematical
framework for robust stability of compact sets and pinpoint several engineering
control problems.
Shiva Planjery
SPACL (Prof. Vasic)
"Iterative decoding beyond belief propagation"
At the heart of modern coding theory lies the fact that
low-density parity-check (LDPC) codes can be efficiently
decoded by belief propagation (BP). The BP is an inference algorithm
which operates on a graphical model of a code, and
lends itself to low-complexity and high-speed implementations, making
it the algorithm of choice in many applications. LDPC codes approach
theoretical limits of channel capacity underr BP decoding. However,
this capacity approaching property holds only in the asymptotic limit
of code length, while codes of practical lengths suffer abrupt
performance degradation in the low noise regime known as the error
floor phenomenon. Our study of error floor has led to an interesting
and surprising finding that it is possible to design iterative decoders
which are much simpler yet better than belief propagation! These decoders
do not propagate beliefs but a rather different kind of messages that
reflect the local structure of the code graph. This talk will briefly
introduce this new paradigm.
Tao Shu
Krunz Lab
"Efficient and truthful mechanisms for opportunistic spectrum access: an economic perspective"
Opportunistic spectrum access (OSA) is a new technology that can significantly
improve the utilization of the spectrum. Under OSA, a secondary radio (SR) is
allowed access to a channel that is not currently being used by the primary radios
(PRs) of the channel. In this talk, I will give an economic view on the operation of
an OSA network, in which the activities of PRs and SRs are driven by profit. I will
identify various research issues that stem from the for-profit nature of the network.
I will also briefly introduce our research achievements on addressing some of these issues.

Recent Collaborators

[More collaborators...]


Location

Office:ECE 456N 
Phone:I do not check voicemail.
 Do not leave voicemail. I always check email before voicemail.
 (520) 626-0737
Fax:(520) 621-8076
Lab:(520) 626-8048
Office Hours:M: 10:00-11:00 am
 W. 11:00-12:00 noon
 And by special appointment with email confirmation.
 Office hours are held only during term sessions.
Address:Mailing:Shipping:
 Dr. Jonathan SprinkleDr. Jonathan Sprinkle
 PO Box 210104University of Arizona, ECE
 University of Arizona, ECE1230 E. Speedway Blvd. Bldg 104, Room 230
 Tucson, AZ 85721-0104Tucson, AZ 85721-0104

Travel Schedule

DatesLocationEvent
2009
10/23-10/28Orlando, FLThe 9th OOPSLA Workshop on Domain-Specific Modeling
10/4-10/9Denver, COMODELS Workshop on Multi-Paradigm Modeling (Oct. 6)
9/3-9/7TBDPersonal Travel
8/10-8/13Chicago, ILAIAA GNC 2009
7/27-8/1AmsterdamLarge-Scale Cognitive Modeling using Model Integrated Computing, a workshop at CogSci 2009

[Full travel schedule]


Weekly Schedule (updated for 2009F)

 MonTueWedThuFri
0800     
      
0900ResearchResearchResearchResearchResearch
 |||||
1000ECE456N||||
 ECE456N||||
1100Research|ECE456N||
 ||ECE456N||
1200||Research||
 |||||
1300|Jacob/Diyang|||
 |Maribel/Hussain|||
1400|Lab Mtg|||
 |||||
1500|ResearchCurrents*||
 ||Currents*||
1600ECE 373|ECE 373||
 ECE 373|ECE 373||
1700ECE 373|ECE 373||
 |||||
1800|||||
      

Notes:

[Full weekly schedule]