Search for dissertations about: "seal detection"

Found 5 swedish dissertations containing the words seal detection.

  2. 1. Failure Monitoring and Asset Condition Assessment in Water Supply Systems

    Author : Dalius Misiunas; Industriell elektroteknik och automation; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mechanical engineering; reglerteknik; robotteknik; Automatiska system; Water supply; failure; detection; monitoring; location; bursts; hydraulics; leakage; asset management; condition assessment; pipelines; pipe networks; Automation; control engineering; robotics; vacuum technology; vibration and acoustic engineering; Maskinteknik; hydraulik; vakuumteknik; vibrationer; akustik;

    Abstract : In this thesis, different aspects of failure management in urban water supply systems are discussed. As assets are getting older, the number of pipe failures is increasing and an efficient failure management strategy becomes important. READ MORE

  4. 2. Assessment of dietary patterns and prey consumption of marine mammals: Grey seals (Halichoerus grypus) in the Baltic Sea

    Author : Karl Lundström; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; grey seal; Halichoerus grypus; Baltic Sea; diet; predation; fish; consumption; fatty acid signature analysis; bioenergetics; foraging ecology;

    Abstract : The Baltic Sea has been severely affected by pollution and resource overexploitation during the last centuries. The grey seal (Halichoerus grypus) is a good example of how a species can be affected by such changes. READ MORE

  5. 3. The conflict between Grey seals (Halichoerus grypus) and the Baltic coastal fisheries : new methods for the assessment and reduction of catch losses and gear damage

    Author : Arne Fjälling; Mats Amundin; Sverre Sjölander; Anders Fernö; Linköpings universitet; []
    Keywords : Ecology; Grey seals; Baltic coastal fisheries; Ekologi; NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : There is a problematic interaction going on between grey seals and the small scale coastal fisheries in the Baltic. A large number of seals are by-caught and drowned each year, and the viability of the fishery is threatened by catch losses caused by the seals. READ MORE

  6. 4. Ecology and Conservation of the Baltic Proper Harbour Porpoise

    Author : Ida Carlén; Anders Angerbjörn; Julia Carlström; Martin Biuw; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Harbour porpoise; Baltic Sea; distribution; abundance; bycatch; conservation policy; zoologisk ekologi; Animal Ecology;

    Abstract : The Baltic Proper harbour porpoise (Phocoena phocoena) population is listed by IUCN as Critically Endangered, but conservation action has been lacking for decades, partly due to very limited knowledge on important ecological parameters such as distribution range and abundance. This thesis provides some of the information needed for implementing effective conservation. READ MORE

  7. 5. Laser Sensing for Quality Control and Classification – Applications for the Food Industry, Ecology and Medicine

    Author : Patrik Lundin; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysicumarkivet A:2014:Lundin;

    Abstract : Monitoring constitutes a cornerstone, both for efficient control of optimized industrial processes and for obtaining knowledge about non-controlled, natural phenomena. This thesis is all about monitoring, or measurements. In this case the primary information is gathered with light, and in a non-intrusive, and usually a stand-off or remote way. READ MORE