Bart Braem

Senior researcher

Workshop and symposium talks

2009

  • Teaching with Click Modular Router
    B. Braem, M. Voorhaen & C. Blondia
    Symposium on Click Modular Router, n.p., Ghent, Belgium, October 2009.

    Abstract:
    This poster describes how we use Click to teach a telecommunications course. We show why Click was chosen and how it is used. We elaborate on the different projects students have to finish and discuss practical problems like the typical learning curve.

  • Teaching with Sun SPOTs
    B. Braem & C. Blondia
    UK/Europe Sun SPOT Symposium, n.p., London, United Kingdom, February 2009.

    Abstract:
    Recently, the PATS research group of the University of Antwerp introduced sensor networks into its research. Consequently, we also incorporated this topic into our teaching curriculum. Past experiences with traditional sensor network platforms however showed a steep learning curve to get familiar with the platform, which makes it hard to use them in time limited practical courses. Once we discovered the Sun SPOTS with an all Java approach, this hurdle was easily taken.
    This talk will introduce two implementations of education with Sun SPOTS. First, we teach the course "Sensor Network Lab". Here students learn to use Sun SPOTS and develop a specific network related sensory application in order to get some first hands on experience with sensor networks. We will describe the practicalities of this course, assignments students get and most important the reactions of students on this technology.
    The second part of this talk illustrates how Sun SPOTS are used to guide Master students towards research topics in internships and Masters theses. Ongoing work will be presented together with preliminary results and the personal opinions of our Master students about Sun SPOTS.

2007

  • Challenges in Multihop Wireless Body Area Networks
    B. Braem & C. Blondia
    Second Benelux Workshop on Performance Analysis of Communication Systems, n.p., Antwerp, Belgium, February 2007.

    Abstract:
    A Wireless Body Area Network (WBAN) is formed when sensors on the human body are connected using wireless technologies. Such a network can be used to monitor patients remotely as the costs of keeping them in a hospital just for monitoring are enormous. Another possibility is to assist in athlete coaching with real time measurements of their muscle performance. Connecting the sensors wirelessly largely improves comfort of the person wearing them, to monitor athletes unobtrusively is absolutely necessary. Research shows that radio signals sent close to the human body experience severe path loss compared to regular, free-space communication. To send over large distances, sensors on the body should have to transmit with a relatively high transmission power compared to the short distance. This means that multihop communication can result in less battery drain. A larger argument stems from the fact that radio signals can not pass through the human body. This means that sensors located at the back of a person can only use multihop routing to reach the other sensors at the front of the body. We discuss the challenges that arise when using a multihop network protocol for WBANs, relating this to existing technologies like sensor networks and ad-hoc networks.

Past projects and publications

I have been involved in a number of projects throughout my university career. Special attention went and goes to the dictionary of the Flemish Sign Language, het woordenboek Vlaamse Gebarentaal. This ongoing project resulted in two publications.

2005

  • Semantic Searching for SignWriting
    Steven Aerts, Bart Braem, Katrien Van Mulders & Kristof De Weerdt
    Actes de TALS 2005, Dourdan, France.
     

    Abstract:
    In this paper we present the development results of an online sign searching system independent of manual annotations based on SignWriting. Lookup is done on an intuitive yet flexible basis and results are ordered by relevance. The system is currently active for the Flemish Sign Language dictionary containing over 7000 signs.

2004

  • Searching SignWriting Signs
    Steven Aerts, Bart Braem, Katrien Van Mulders & Kristof De Weerdt
    Sign Processing Workshop, LREC 2004, p. 79-81, Lisbon, Portugal.
     

    Abstract:
    At this moment the publication of the first written Flemish Sign Language (VGT) Dictionary is in progress. It consists of VGT glossaries and allows its users to lookup the signs for over 2000 Dutch words. The signs are written in SignWriting. We have established an electronic representation of this sign language dictionary. Searching for signs starting from a Dutch word works straightforward. The opposite, receiving results ordered by relevance, has never been develloped before. In this paper we explain how we have worked out such a system.