Sökning: "Johannes Karlsson"

Hittade 5 avhandlingar innehållade orden Johannes Karlsson.

  1. 1. Low-delay sensing and transmission in wireless sensor networks

    Författare :Johannes Karlsson; KTH.; [2008]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cooperative communication; wireless sensor networks; low-delay transmission; joint source-channel coding; estimation; quantization; TECHNOLOGY Information technology Telecommunication; TEKNIKVETENSKAP Informationsteknik Telekommunikation;

    Sammanfattning : With the increasing popularity and relevance of ad-hoc wireless sensor networks, cooperative transmission is more relevant than ever. In this thesis, we consider methods for optimization of cooperative transmission schemes in wireless sensor networks. LÄS MER

  2. 2. The influence of clouds on Earth's radiation budget in global climate models

    Detta är en avhandling från Stockholm : Department of Meteorology, Stockholm University

    Författare :Johannes Karlsson; Stockholms universitet.; [2009]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES Earth sciences Atmosphere and hydrosphere sciences; NATURVETENSKAP Geovetenskap Atmosfärs- och hydrosfärsvetenskap; NATURAL SCIENCES Earth sciences Atmosphere and hydrosphere sciences Meteorology; NATURVETENSKAP Geovetenskap Atmosfärs- och hydrosfärsvetenskap Meteorologi; NATURAL SCIENCES Earth sciences Atmosphere and hydrosphere sciences Oceanography; NATURVETENSKAP Geovetenskap Atmosfärs- och hydrosfärsvetenskap Oceanografi; atmosfärvetenskap och oceanografi; Atmospheric Sciences and Oceanography;

    Sammanfattning : Considering the high sensitivity of climate to changes in cloudiness, the way clouds might change in a perturbed climate is important for the total temperature response. In fact, the cloud feedback has been identified as the main uncertainty in future projections, as simulated by global climate models. LÄS MER

  3. 3. Wireless video sensor network and its applications in digital zoo

    Detta är en avhandling från Umeå : Umeå universitet, Institutionen för tillämpad fysik och elektronik

    Författare :Johannes Karlsson; Umeå universitet.; [2010]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wireless Sensor Networks; Wireless ad-hoc Networks; Digital Zoo; Video Compression; Real-Time Video Communication; Object Tracking; Sensor Fusion; TECHNOLOGY Electrical engineering; electronics and photonics Other electrical engineering; electronics and photonics; TEKNIKVETENSKAP Elektroteknik; elektronik och fotonik Övrig elektroteknik; elektronik och fotonik; signalbehandling; Signal Processing;

    Sammanfattning : Most computing and communicating devices have been personal computers that were connected to Internet through a fixed network connection. It is believed that future communication devices will not be of this type. Instead the intelligence and communication capability will move into various objects that surround us. LÄS MER

  4. 4. Götisk kabbala och runisk alkemi Johannes Bureus och den götiska esoterismen

    Detta är en avhandling från Stockholm : Institutionen för etnologi, religionshistoria och genusstudier, Stockholms universitet

    Författare :Thomas Karlsson; Stockholms universitet.; [2010]
    Nyckelord :HUMANIORA; HUMANITIES; Western Esotericism; Gothicism; Kabbalah; Alchemy; The Swedish Great Power period; Millennialism; HUMANITIES and RELIGION Religion Theology History of religion; HUMANIORA och RELIGIONSVETENSKAP Religionsvetenskap Teologi Religionshistoria; History of Religion; religionshistoria;

    Sammanfattning : Gothicism in general, and the Swedish Gothicism in particular, had a close connection to the esoteric currents that were flourishing all over Europe in the Early Modern Period. Apocalyptic predictions and prophecies useful to Gothic propaganda were derived from contemporary esoteric streams, but alongside these came Hermetic and Neo-Platonic speculations of a more individual character that emphasized man’s gradual ascension toward a higher state. LÄS MER

  5. 5. Low-delay sensing and transmission

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Johannes Kron; KTH.; KTH.; [2011]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cooperative communication; wireless sensor networks; low-delay transmission; joint source-channel coding; distributed source coding; estimation; quantization; TECHNOLOGY Information technology Telecommunication; TEKNIKVETENSKAP Informationsteknik Telekommunikation;

    Sammanfattning : This thesis studies cooperative sensing and transmission in the context ofwireless sensor networks (WSNs). We especially focus on two means of cooperative sensing and transmission, namely, distributed source coding and relaying. LÄS MER