Nachhaltige Kommunikationsnetze

Lade...
Vorschaubild
Übergeordnete Einrichtung
Country
DE
City
Bremen

Filter

Einstellungen

Gerade angezeigt 1 - 2 von 2
  • Lade...
    Vorschaubild
    Some of the metrics are blocked by your 
    consent settings
    Item-typ:Veröffentlichung,
    Self Adaptive Communication based on Soil Moisture for Wireless Underground Sensor Networks
    (2020-05-19)
    Zaman, Idrees
    ;
    Förster, Anna
    In wireless underground sensor networks, channel estimation for communication success requires absolute information about deployment and properties of soil. These properties include soil composition (sand, silt, clay), soil density, soil temperature, inter-node distance, node depth, operating frequency and soil moisture. However, only soil moisture shows most temporal and spatial variation and affects the underground communication in long term. Therefore, we propose only soil moisture based self adaptive communication approach that overcomes the requirement of precise knowledge about the parameters of soil and underground deployment. This approach strives to find the maximum soil moisture threshold for successful communication for any given deployment. And, the sensor nodes conserve energy by avoiding the communication in times of increased soil moisture. Our proposed method is proved to be 5 times more energy efficient than terrestrial medium access control methods i.e.\ B-MAC for underground monitoring applications under extreme weather conditions.% One such application requires to analyse the efficiency of reforestation techniques to combat desertification of large fields in Cameroon. However persistent rains in the region present communication and reduced battery life challenges for underground networks. Self adaptive approach allows the sensor nodes to conserve more energy by forbidding the communication in times of increased soil moisture without requiring any soil information.
    Bericht
      445  440
  • Lade...
    Vorschaubild
    Some of the metrics are blocked by your 
    consent settings
    Item-typ:Veröffentlichung,
    Exciting Students for Systems Programming Through the Use of Mobile Robots
    Förster, Anna
    ;
    Förster, Alexander
    ;
    Leitner, Jürgen
    In this paper we present our experience teaching Systems Program- ming in C to undergraduate students. Additionally to traditional Unix-like operating system approach, we employed a robotic plat- form - the e-puck mobile robot - to increase the students moti- vation and improve their learning experience. A robotic platform provides high attraction for students, making the class stand-out compared to other courses. Yet it is not only a playground, rather, the platform allows to present very challenging and sophisticated real-life programming problems in a tangible way. The chosen robot provides an open-source operating system with a well struc- tured programming interface and thus o ers a real-world, complex example of systems programming to the students. We describe the overall curriculum and the syllabus of the course itself. Emphasis is put on the design of the in-class and homework assignments, but the robotic platform is brie y described as well. Our success is con rmed by the end-of-semester evaluation by the students, who ranked our course among the top of all bachelor-level courses.
    Bericht
      274  87