Symposium at TUHH

July 24th, 2008

Manfred Broy Friedrich H. Vogt Leslie Lamport

Since Prof. Dr. Vogt is going to retirement and leaves his position as head of the Institute of Telematics of Hamburg University of Technology a small farewell party has been organized. The most to prominent guests from the computer science community were Leslie Lamport and Manfred Broy. Leslie spoke about the benefits of usage of +CAL, a language for algorithm specification built on top of TLA+. Manfred spoke about requirements engineering and the utmost important of requirements for the quality of the software. The event has been finalized by a delicious buffet.

The pictures are available at http://www.ti5.tu-harburg.de/graphic/photos/symposium/

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de Roever Pnueli Lamport

On Friday, I took part on the leave-taking of Prof. de Roever in Christian-Albrechts-Universität, in Kiel, Germany. Several prominent people from computer science research community spoke very kind words about de Roever, especially Amir Pnueli, who presented himself as a colleage and a competitor. Leslie Lamport also has been there, but I missed his talk that took place on Thursday. Further pictures are in my Flickr gallery

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Eclipse Sponsored Event The first “Eclipse Stammtisch Hamburg” took place in Bolero in Ottensen. It was a full success, about 50 people were there. Peter and Stefan seemed to like it too. I was glad to see people I met on Eclipse Democamp again. I liked the location, having a separated room, big enough for another 50 people. I spoke with Ralph on the intended frequency of the event - it could be good to have it once in a quater. Some pictures can be seen in my FlickR gallery.

GPS raw signal recording

February 1st, 2008

According to Slontech a new GPS related technology breakthrough may become available. In contrast to GPS live mode, where the coordinates are required in time of receiving (e.G. for navigation scenario) geo-tagging does not require them. As described in Geotagging with GPS Whitepaper the new device could just store the raw GPS signal. Later this signal can be used to recompute the coordinates from the timestamp and the satellite positions and write them to EXIF. The general idea behind this approach is to minimize the the energy consumption. A standard GPS device needs about 30 seconds to calculate its position. The most time it uses to download the satellite position and only 200ms are needed for the position determination of the device itself. Other approaches exist to improve the precision of GPS and transmit the additional data using radio or the Internet.

In general, I think the approach could have some impact on GPS usage, because the device is cheap and the usage is easy. In the same time, it is not the first device that can be sensefull build in in any device. A bluetooth chip is also very cheap and could be used in any digital camera for photo synchronization, but it is mostly an exception…

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Synergy effects

January 11th, 2008 deutsch русский

A funny synergy effect results from the fact that Shuron’s Letters is using Wordpress too. As long as I’m his reader and he is mine and we push the plugin selection independent, the total number of reviewed and selected useful plugins is almost the double of my own. Thanks to Shuron’s introduction, my blog will also support multi-language posts using the Polyglot plugin.

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