Dr Ulrich Matthias Speidel

MSc, PhD

Senior Lecturer

In: School of Computer Science » Faculty of Science

Biography

1992: Came to NZ with the equivalent of a BSc from Germany. Undertook MSc studies in physics at the University of Auckland. The thesis was about signal processing for underwater acoustics used in a climatology experiment.
1994: Graduated MSc with 1st Class Honours. Later in that year, I started a PhD under Mark Titchener, on T-Codes.
1998: Finished PhD thesis and started my own consulting company, Technology Transfer Consulting Ltd. Did a bit of web work and more technical translations than you could shake a babelfish at. Customers include The University of Auckland and O'Reilly, Germany, for whom I translated Jerry Bradenbaugh's "JavaScript Application Cookbook" into German, as well as a number of chapters from "Perl in a Nutshell". Graduated with my PhD at the end of the year.
2000: Got bored with just business and decided to get back into academia. That's why I'm here.

Research | Current

Anything that's fun!
Network coding over satellite and other long latency links
Did you know that Internet via satellite often doesn't use the expensive satellite link very efficiently? Network coding can potentially help, but in order to get there, we need to experiment a lot. For this purpose, we operate the Auckland Internet Satellite Simulator.
T-Codes and T-information theory
To understand T-information theory, you'll need to understand T-Codes. To understand T-Codes, you must first understand T-Codes. If this confuses you, talk to me.
Complexity in time series data and the use of information measures in detection and decision-making, e.g., in the detection of network events or similarity comparisons in noisy data
Sustainabilty of real-time protocols on the Internet
Ever wondered why VoIP applications such as Skype seem to continue to (just) work on Internet infrastructure that wasn't built for it? So am I.
Web application programming and security

Teaching | Current

Currently: COMPSCI110 Introduction to Computer Systems, COMPSCI314 Modern Data Communications

Postgraduate supervision

I'm always looking for cool frills to add to my research, so if you're keen to get your hands wet on HTML, JavaScript and PHP, talk to me.

Responsibilities

Tuakana coordinator for Computer Science, along with Simone Linz and David Welch

Areas of expertise

Data communications, information theory, satellite Internet, satellite communication, network measurement, codes, data compression, signal processing, network coding, web applications, web security

Committees/Professional groups/Services

MIEEE

Selected publications and creative works (Research Outputs)

Seo, J. O., Manoharan, S., & Speidel, U. (2019). Steganalysis of Storage-based Covert Channels Using Entropy. 2019 29th International Telecommunication Networks and Applications Conference, ITNAC 2019. 10.1109/ITNAC46935.2019.9078009
Other University of Auckland co-authors: Sathiamoorthy Manoharan
Denny, P., Manoharan, S., Speidel, U., Russello, G., & Chang, A. (2019). On the fairness of multiple-variant multiple-choice examinations. SIGCSE 2019 - Proceedings of the 50th ACM Technical Symposium on Computer Science Education. 10.1145/3287324.3287357
Other University of Auckland co-authors: Sathiamoorthy Manoharan, Giovanni Russello, Paul Denny
Liu, X., Speidel, U., & Tu, W. (2018). RAODV: An Entropy-based Congestion Control for the AODV Routing Protocol. Paper presented at The 2018 Asia Pacific Advanced Network Research Workshop, Auckland, New Zealand. 6 August - 6 August 2018. Proceedings of the 15th APAN Research Workshop 2018.
Other University of Auckland co-authors: Wanqing Tu
Dinneen, M. J., & Speidel, U. (2018). Preface. Natural Computing, 17 (2), 295-295. 10.1007/s11047-016-9592-z
Other University of Auckland co-authors: Michael Dinneen
Rebenich, N., Gulliver, T. A., Neville, S., & Speidel, U. (2018). An analog of the prime number theorem for finite fields via truncated polylogarithm expansions. Mathematics of Computation, 87 (310), 855-877. 10.1090/mcom/3247
URL: http://hdl.handle.net/2292/39812
Speidel, U., Qian, L., Cocker, E., Medard, M., Vingelmann, P., & Heide, J. (2017). Simulating the network dynamics of shared satellite channels: Bringing the Internet to the last few million. Paper presented at APNIC 44: Asia Pacific Network Information Centre 44th Annual Conference, Taichung, Taiwan. 12 September - 14 September 2017.
URL: http://hdl.handle.net/2292/39826
Speidel, U., Qian, L., Medard, M., Vingelmann, P., & Heide, J. (2017). Simulating shared Internet satellite links to remote islands: Bringing the Internet to the last few million. Paper presented at ICCNA 2017: International Conference on Computer and Network Applications, 2017, Sabah, Malaysia. 5 September - 6 September 2017.
URL: http://hdl.handle.net/2292/39845
Speidel, U. M., Cocker, E., Médard M, Vingelmann, P., & Heide, J. (2017). Topologies for the provision of network-coded services via shared satellite channels. In T. Pham (Ed.) SPACOMM 2017: The Ninth International Conference on Advances in Satellite and Space Communications, 7-12. Venice, Italy.
URL: http://hdl.handle.net/2292/39271