Sökning: "hovering"

Visar resultat 11 - 15 av 20 avhandlingar innehållade ordet hovering.

  1. 11. Feathers by day, membranes by night - Aerodynamic performance in bird and bat flight

    Författare :Florian Muijres; Evolutionär ekologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; animal flight; aerodynamics; vortex wake; actuator disk; flight performance; span efficiency; bird; bat; wind tunnel; PIV; Pied Flycatcher; Glossophaga soricina; Leptonycteris yerbabuenae;

    Sammanfattning : The efficiency and performance of a flying animal is directly related to the aerodynamics around its body and flapping wings. Here, I have developed methods for quantifying the wake dynamics around a flying animal. The results are used to estimate the aerodynamic performance of flapping flight. LÄS MER

  3. 12. Neurons against Noise : Neural adaptations for dim light vision in hawkmoths

    Författare :Anna Stöckl; Funktionell zoologi; []
    Nyckelord :vision; insect; hawkmoth; motion vision; spatial and temporal summation; dim light; neural processing;

    Sammanfattning : All animals perceive the world through their senses, which form the basis for their decisions and motor actions. However, when these all-important senses reach their limit and cease to provide reliable information, the animal’s survival is threatened. LÄS MER

  4. 13. Under The Sign of Regret

    Författare :Alejandro Cesarco; Konsthögskolan i Malmö; []
    Nyckelord :HUMANIORA; HUMANITIES; Visual Arts; Regret; Psychoanalysis; Affect Theory; Creativity; Aesthetics;

    Sammanfattning : Under the Sign of Regret focuses on aesthetically mediated responses to regret. It interrogates the qualities of the feeling of regret as well as what is produced under its influence (as objects and as experiences). LÄS MER

  5. 14. Det outsagda och ohörsammade lidandet : Tillvaron för personer med långvarig psykossjukdom och deras närstående

    Författare :Susanne Syrén; Eva Benzein; Britt-Inger Saveman; Margaretha Ekebergh; Unni Å Lindström; Linnéuniversitetet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Long term psychotic illness; family perspective; reflective lifeworld research; existential suffering and existential care.; Caring sciences; Vårdvetenskap; Vårdvetenskap; Caring Science;

    Sammanfattning : Aim: The overall aim of the thesis was to describe the lived experience of being in the world with long term psychotic illness. This is described from three perspectives; the perspective of persons diagnosed with long term psychotic disorder; the perspective of their relatives; and a family perspective. LÄS MER

  7. 15. On Visual Perception for an Aerial Robotic Worker

    Författare :Christoforos Kanellakis; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Reglerteknik; Control Engineering;

    Sammanfattning : Micro Aerial Vehicles and especially multi rotors are gaining more and more attention for accomplishing complex tasks, considering their simple mechanical design and their versatile movement. MAVs are ideal candidates to perform tasks autonomously, to work safely in close proximity and in collaboration with humans, and to operate safely and effectively in natural human environments, like infrastructure inspection-maintenance, underground mine operations and surveillance missions. LÄS MER