Sape Mullender
INF
4055
Faculty of Computer Science
University of Twente
P.O. Box 217
7500 AE Enschede, The Netherlands
Phone: +31 53 489 3709, Fax: +31 53 489 4590
Internet: sape@huygens.org | sape@cs.utwente.nl
PGP key: [click here]
Private Pilot
You can see and hear me speak about one of my projects here
(Not only is it Dutch, it's 30MB big too!).
Profession:
I have two part-time jobs, one as a professor of Computer Science in Twente,
the other as a member of technical staff at the Computing
Sciences Research Center of Lucent
Technologies' Bell Laboratories.
To read about me at Bell Labs, look here.
To learn about me in Twente, read on.
I'm a Professor in the Huygens Laboratory
for Systems Research in the Faculty of Computer Science. The department
specificly teaches computer organization, operating systems, distributed
systems, design of digital circuitry. It is also involved in teaching the
general undergraduate curriculum.
Teaching:
I teach two courses:
Distributed Systems (aka Gedistribueerde Operating
Systemen, GOS) and
Secure Systems Engineering (SSE).
Students: take a look at this information about `afstudeerprojecten'
(Master's Thesis projects).
Research:
I lead the Huygens project.
The Huygens Project
The Huygens Project is about developing operating-system architectures
that support the following three themes:
-
Multimedia
Systems should be able to exchange high-quality audio/visual information;
that is, high-fidelity sound and studio-quality video with, for humans,
imperceptible transmission and processing latencies. We are investigating
architecture, design and implementation of file servers for storage and
archiving of multimedia data, operating systems that support the specific
timeliness constraints of multimedia applications (soft real-time scheduling),
and Quality-of-Service architectures that allow applications to adjust
the quality of their presentation to the availiability of resources.
-
Mobile computing
The advent of portable phones and wireless LANs allows us to view notebook
computers, palm tops and, `personal digital assistants' as part of a large,
distributed system. In the Huygens Project, we investigate how hybrid network
infrastructures can be used to optimise network bandwidth and communications
cost and how a consist view of the world can be maintained by distributed
applications when communication links are temporarily down.
-
Security
The Internet has grown from an academic network to a world-wide network
for anyone, important for personal and business communications. Confidential
information is now being exchanged via the Internet and commercial services
are being offered. Tele-working is on the rise and this will cause the
Internet to be used for sensitive information. in the Huygens Project we
investigate protocols for authentication and passing contract between mutually
suspicious principals. An important aspect here is to design protocols
that generate evidence to prove, either during or after the fact, protocol
violations or breach of contract to an independent third party.
Our research is experimental in nature: we build prototypes to test and
measure our architectural ideas. Currently, prototype systems are built
in two important application areas: tele-working and tele-teaching. Tele-working
applications will support working at home or in satellite offices by providing
unrestricted, but secure access to the information infrastructure at work
and high-quality interaction with colleagues elsewhere. Tele-teaching applications
will connect classrooms to each other, or students at home to classrooms,
using techniques similar to those in tele-working. The Huygens project
is and has been supported by a number of collaborative projects: Pegasus,
Esprit BRA 6586, 1992--1995, and Esprit LTR 21917, 1996-1999; Broadcast,
Esprit BRA 6360, 1992--1995; CaberNet,
Esprit NoE 6361, 1992--1998; Moby
Dick, Esprit LTR, 1995--1996; ACUTE:
An ATM trail between CWI and UTwente within the framework of the SURFnet4
ATM pilot project; Xerox Europarc,
1992--1996, Amis, a Dutch NWO project. The tele-working experiments are
being supported by Stichting de Veur, a foundation that encourages innovative,
serendipitous applications of IT; the tele-teaching experiments are being
conducted in close collaboration with the University of Delft Institute
for Telematics Systems Engineering.
Miscellaneous
Check out my restaurant
list
I wrote two columns for UT
Nieuws (in Dutch). Their titles are Hoe
Veilig is die Chipkaart? and Het
anonieme Internet
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