2009- 2010 Archived Speaker Series

Owning the Problem in Wireless Research - An Exploration of Some Case Studies

Tuesday, May 4, 2010
5:45pm - 6:45pm
North Creek Events Center

Victor Bahl
Principal Researcher and Founding Manager
Microsoft Research

Anticipating the 2009 analog-to-digital TV transition, the Federal Communications Commission issued a landmark ruling on Nov. 4, 2008, voting unanimously in favor of opening unused television frequencies, called white spaces, for unlicensed use. Regulators around the world are watching the United States and following suit. To some, this is the biggest opportunity in wireless communications since GSM. To others, it is an irresponsible act that will interfere with television broadcasts, rock concerts, and church services. I will discuss the evolution of our thinking including the societal, policy, technical, and business issues that make white-space networking such an exciting topic and the next frontier of wireless Internet connectivity.

About Dr. Bahl
Victor Bahl is a Principal Researcher and founding Manager of the Networking Research Group in Microsoft Research Redmond. He is responsible for directing research activities that push the state-of-art in the networking of devices and systems. He and his group build proof-of-concept systems, engage with academia, publish papers in prestigious conferences and journals, publish software for the research community, and work with product groups to influence Microsoft's products.

His personal research interests span a variety of topics in wireless systems design, mobile networking, and network management. He has built and deployed several seminal and highly cited networked systems, with a total of over 9,000 citations; he has authored over 85 papers and 116 patent applications, 68 of which have issued; he has won best paper awards at SIGCOMM and CoNext and has delivered over two dozen keynote & plenary talks; he is the founder and past Chairperson of ACM SIGMOBILE; the founder and past Editor-in-Chief of ACM Mobile Computing and Communications Review, and the founder and steering committee chair of the MobiSys; He has served as the General Chair of several IEEE and ACM conferences including SIGCOMM and MobiCom, and is serving on the steering committees of seven IEEE & ACM conferences & workshop; he has served on the board of over half-a-dozen journals; on several NSF, NRC and FCC panels, and on over seven dozen program committees.

Dr. Bahl received Digital's Doctoral Engineering Fellowship Award in 1995 and SIGMOBILE's Distinguished Service Award in 2001. In 2004, Microsoft nominated him for the innovator of the year award. He is an ACM Fellow and an IEEE Fellow. When not working, he loves to read, travel, eat in fine restaurants, and spend time drinking with friends and family. To learn even more about Dr. Bahl, visit his Microsoft Research page.

Ubiquitous Networking: Medium Access and Routing View

Dr. Takashi Watanabe
Prof. of Faculty of Informatics
Shizuoka University, Japan

Thursday, April 29, 2010
5:45pm - 6:45pm

A ubiquitous network is expected to be a promising technology for the future human life supporting medical applications, disaster mitigation etc. From a view point of networking, ad hoc networks and sensor networks are significant keys of the ubiquitous network.

This talk provides the current topics of those networks. At first, smart antennas-based medium controls and routings are mentioned. Smart antennas achieve programmable control of the directivity of the wireless signal so that it is expected to enhance scalability by exploiting better spatial reuse and transmission range extension. However, some issues called hidden terminal problem and deafness problem may reduce the advantage. Our MAC and routing protocols are designed to suppress the problems. The implementation of the testbed of those networks called UNAGI is also mentioned. Other topics will include data aggregations to reduce network traffic and routing protocols for sustainable sensor networks.

About Dr. Watanabe
Takashi Watanabe is a Professor of Faculty of Informatics, Shizuoka University, Japan. He received his M.E. and D.E. degrees from Osaka University in 1984 and 1987 respectively. In 1987, he joined Faculty of Engineering, Tokushima University as an assistant professor. In 1990, he moved to Faculty of Engineering, Shizuoka University. He was a visiting researcher at University of California, Irvine from 1995 through 1996. He has served on many program committees for networking conferences, IEEE, ACM, IPSJ (Information Processing Society of Japan), IEICE (The Institute of Electronics, Information and Communication Engineers, Japan). His research interests include mobile networking, ad hoc networks, sensor networks, ubiquitous networks, intelligent transport systems, specially MAC and routing. He is a member of IEEE, IEEE Communications Society, IEEE Computer Society, ACM SIGMOBILE as well as IPSJ and IEICE.

Distributed Data Architecture

Wednesday, March 3, 2010
3:30pm - 4:30pm

Matthew Greenway
Cloud Database Team

Cloud Computing, one of the growing distributed computing trends, presents a fairly large set of problems to overcome. Distributed computing is one of those nebulous concepts that often does not associate the term with a solid concept. For example, consider the analog of offloading the game play of your favorite video game to the host service. This is an example of a distributed computing architecture. In most cases that really isn't truly a distributed system. Instead, you have a load balancing paradigm in play with some clustered servers in the background. What are some of the interesting challenges presented by distributed systems when dealing with data throughput? How do you deal with networking, node awareness and node mapping? Join us for a discussion these topics and more.

About Mr. Greenway
Matthew Greenway currently works as a Systems Engineer on Microsoft’s CloudDB product named SQL Azure. His focus is on database technologies, which includes the SQL Server, Sybase, Oracle, Informix and DB2 database products, and has worked as a Developer, DBA and a Systems Engineer since his career began in 1996. Matthew graduated from the UWB Computing and Software Systems Program in 1999.

Szumo: A Compositional Contract Model for Safe Multi-threaded Applications

Lecture Cancelled!

Wednesday, February 10, 2010

Laura Dillon, PhD
Professor & Chairman
Computer Science and Engineering at Michigan State University

It is well known that the expressive power afforded by concurrency comes at the expense of increased complexity. Without proper synchronization, concurrent access to shared objects can lead to race conditions, and incorrect synchronization logic can lead to starvation or deadlock. Moreover, concurrency confounds the development of reusable software modules because synchronization logic is difficult to modularize and separate from functional logic.

The Synchronization Units Model (Szumo) extends an object-oriented language with a notion of synchronization contracts to address these concerns. In lieu of writing low-level code to acquire and release shared objects, programmers declare synchronization contracts in a module's interface. A run-time scheduler automatically negotiates the contracts on behalf of threads, ensuring that the contracts of all modules are met while simultaneously guarding against data races and a large class of deadlocks.

This talk provides an introduction to Szumo and an overview of a case study to validate the efficacy of Szumo on a realistic design problem: the component-based design of a multi-threaded web server.

About Dr. Dillon
Laurie Dillon (PhD, UMASS’84) is a professor and the Chairperson of Computer Science and Engineering at Michigan State University. Her research interests include formal methods for specification, analysis and design of concurrent software systems; concurrent programming models and languages; and software engineering. Laurie is active in the software engineering research community. Currently, she is an associate editor of ACM TOSEM, a Member-At-Large of the Executive Committee of ACM SIGSOFT, and General Chair of the Michigan Celebration of Women in Computing.

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