Search for dissertations about: "communications"

Showing result 11 - 15 of 1408 swedish dissertations containing the word communications.

  2. 11. Smuggle, Frame, Shoot : Illicit Media Practices and Visual Insurgency from Lebanese Incarceration

    Author : Chafic T. Najem; Kari Andén-Papadopoulos; Malin Wahlberg; Anne Kaun; Stockholms universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; media studies; visual culture; media practice; media witnessing; digital activism; vulnerability; prison practices; prison representations; prison testimonies; medie- och kommunikationsvetenskap; Media and Communication Studies;

    Abstract : This research explores prisoners’ illicit use of digital-media technology during their incarceration in Lebanon. Prisoners smuggle cellphones and access internet and telecommunication connection to produce and mediate videos, images, and voice recordings documenting quotidian experiences of imprisonment, violent events, and the COVID-19 Pandemic inside the notorious and overcrowded Roumieh Central Prison. READ MORE

  4. 12. Signaling for Optical Intensity Channels

    Author : Johnny Karout; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lattice codes; mutual information; intensity modulation; noncoherent communications; Direct detection; sphere packing.; infrared communications; free-space optical communications; fiber-optical communications;

    Abstract : With the growing popularity of social media services, e-commerce, and many other internet-based services, we are witnessing a rapid growth in the deployment of data centers and cloud computing platforms. As a result, the telecommunications industry has to continue providing additional network capacity to meet the increasing demand for bandwidth. READ MORE

  5. 13. Modulation Optimization for Noncoherent Optical Systems

    Author : Johnny Karout; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Direct detection; noncoherent communications; lattice codes; mutual information; fiber-optical communications; intensity modula- tion; sphere packing.; infrared communications; free-space optical communications;

    Abstract : There has been a significant improvement in high-speed electronics and optical components over the past few years, and this is one of the key enabling factors for high data rate transmission. Moreover, multi- level modulation formats, which encode information onto the carrier’s amplitude and phase, are necessary to increase the spectral efficiency of communication systems. READ MORE

  6. 14. Digital Distance Education – A Longitudinal Exploration of Video Technology

    Author : Lena Dafgård; Göteborgs universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; distance education; digitalisation; video; higher education;

    Abstract : The context of this thesis is digital distance education. Distance education has developed from correspondence courses, based on letters sent by mail between student and teacher, to digital distance education with interactive video classes from anywhere, as long as a computer/tablet/smartphone and an Internet connection are available. READ MORE

  7. 15. Connected Practice: The Dynamics of Social Interaction in Shared Virtual Environment

    Author : Maria Spante; Ralph Schroeder; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; time; connected practice.; Shared virtual environments; virtual reality technology; dynamics; social interaction; practice; Informatik;

    Abstract : This thesis investigates the phenomenon of social interaction in shared virtual environments (SVEs), supported by virtual reality (VR) systems over time. SVEs are computer generated 3D graphical spaces where geographically distributed people can meet and interact with each other in a graphical space. READ MORE