Sökning: "jamming"

Visar resultat 1 - 5 av 25 avhandlingar innehållade ordet jamming.

  1. 1. Moving and Jamming : Implications for Social Movement Theory

    Författare :Åsa Wettergren; Gerd Lindgren; Jack Barbalet; Karlstads universitet; []
    Nyckelord :SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; culture jamming; new social movements; culture studies; sociology of emotions; late capitalism; information society; discourse theory; post-structuralism; adbusters; collective identity; Sociology; Sociologi; Sociologi; Sociology;

    Sammanfattning : The present compiled dissertation explores culture jamming as a social movement in late capitalist information society. Culture jamming embraces groups and individuals practicing symbolic protest against the expansion and domination of large corporations and the logic of the market into public and private life. LÄS MER

  2. 2. Jamming and Soft-Core Rheology

    Författare :Daniel Vågberg; Peter Olsson; Teitel Stephen; Vitelli Vincenzo; Umeå universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; jamming; rheology; soft matter; granular material; SLLOD; critical point; critical scaling;

    Sammanfattning : Many different physical systems, such as granular materials, colloids, foams and emulsions exhibit a jamming transition where the system changes from a liquid-like flowing state to a solid jammed state as the packing fraction increases. These systems are often modeled using soft-core particles with repulsive contact forces. LÄS MER

  3. 3. Moving and Jamming : Implications for Social Movement Theory

    Författare :Åsa Wettergren; []
    Nyckelord :SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; Sociologi; Sociology;

    Sammanfattning : .... LÄS MER

  4. 4. Modeling of a Retrodirective Channel With Active Antenna Arrays for Cross-Eye Jamming

    Författare :Björn Petersson; Martin Norgren; Warren P. du Plessis; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; electronic warfare; antenna array; antenna system; radar countermeasures; jamming; cross-eye; systems modeling; system performance; systems simulation; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Cross-Eye (CE) jamming is a technique aimed at inducing false target angles in radar measurements. The potential to deceive monopulse radar, a radar type commonly used due to its angular accuracy and resilience against jamming, has captured the interest of Electronic Warfare (EW) system manufacturers. LÄS MER

  5. 5. Blind Massive MIMO Base Stations : Downlink Transmission and Jamming

    Författare :Marcus Karlsson; Erik G. Larsson; Emil Björnson; Ralf Müller; Linköpings universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Massive MIMO (Multiple-Input--Multiple-Output) is a cellular-network technology in which the base station is equipped with a large number of antennas and aims to serve several different users simultaneously, on the same frequency resource through spatial multiplexing. This is made possible by employing efficient beamforming, based on channel estimates acquired from uplink reference signals, where the base station can transmit the signals in such a way that they add up constructively at the users and destructively elsewhere. LÄS MER