Sökning: "communication modes"

Visar resultat 1 - 5 av 174 avhandlingar innehållade orden communication modes.

  1. 1. Systematic Antenna Design Using the Theory of Characteristic Modes

    Författare :Zachary Miers; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Theory of Characteristic Modes; Antenna Design; Antenna; Characteristic Modes; Computational Electromagnetics; MIMO Systems; MIMO Antenna; MIMO; Mutual Coupling; Mobile Antenna;

    Sammanfattning : The day Faraday moved a magnet in and out of a wire loop and detected the time-varying magnetic field, the first wireless transmitter / receiver system was created and the world was changed forever. However, it took almost fifty years for Heinrich Hertz to use Maxwell's equations and Faraday's insights in his professorship at Karlsruhe to create the first electromagnetic wireless communication system using a spark gap dipole transmitter and a loop antenna-based receiver. LÄS MER

  3. 2. Multidimensional Modulation Formats for Coherent Optical Communication Systems

    Författare :Tobias Eriksson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; binary pulse position modulation QPSK; Fiber-optical communication; spectral efficiency; power efficiency; multidimensional position modulation.; 16-ary quadrature amplitude modulation 16QAM ; quadrature phase shift keying QPSK ; coherent detection; polarization-switched quadrature phase shift keying PS-QPSK ; 128-level set-partitioning QAM 128-SP-QAM ;

    Sammanfattning : Coherent optical receivers have enabled the use of multilevel modulation formats with high spectral efficiencies and long transmission reaches. Traditionally, modulation formats utilizing the two dimensions spanned by the amplitude and the phase of the signal have been dominating. LÄS MER

  4. 3. Presence Design : Mediated Spaces Extending Architecture

    Författare :Charlie Gullström; Katja Grillner; Halina Dunin-Woyseth; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Architectural design and theory; presence design; presence research; mediated space; mediated presence; remote presence; mediated interaction; audiovisually extended architecture; media space; design friction; hybrid space; virtual space; tele presence; transdisciplinary; mutual gaze; mediated gaze; spatial montage; tertium quid; active spectatorship; shared mediated space; offscreen space; lateral and peripheral awareness; framing; transparency.; Architecture; Arkitektur; Human communication; Kommunikation mellan människor; Telecommunication; Telekommunikation; Media and communication studies; Medie- och kommunikationsvetenskap;

    Sammanfattning : This thesis is a contribution to design-led research and addresses a readership in the fields of architecture as well as in media and communications. In juxtaposing the tools of the designer (e.g. LÄS MER

  5. 4. Uncertainty in risk assessment : contents and modes of communication

    Författare :Rikard Levin; Sven Ove Hansson; Erik Olsson; KTH; []
    Nyckelord :HUMANIORA; HUMANITIES; uncertainty; scientific uncertainty; characterization of uncertainty; decision-making under uncertainty; risk assessment; risk management; Philosophy subjects; Filosofiämnen;

    Sammanfattning : Assessments of chemical health risks are performed by scientific experts. Their intended use is as bases for decisions. This thesis tries to answer the questions of how uncertainty is, and should be, communicated in such risk assessments. The thesis consists of two articles and an introductory essay. LÄS MER

  7. 5. Media technology versus communication patterns in the organizational interface

    Författare :Klara Pihlajamäki; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Kommunikation inom organisationer; Datorisering-- Organisationer;

    Sammanfattning : This thesis describes communication ecology in organizations. One of the main objectives is to identify "ecological balance" which, initially and metaphorically, is described as interaction of senses. The focus is on the systemic relationships between media and communication modes with certain "sensory bias". LÄS MER