Sökning: "time of flight"

Visar resultat 11 - 15 av 336 avhandlingar innehållade orden time of flight.

  1. 11. On the Challenges for Time-of-Flight Electron Spectroscopy at Storage Rings

    Författare :Christian Stråhlman; Lunds universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; time-of-flight; photoelectron spectroscopy; MAX IV; storage ring; detector gating; chopper; coincidence spectroscopy;

    Sammanfattning : Time-of-flight (TOF) techniques for energy analysis have been common in electron spectroscopy for many decades. TOF-based electron spectrometers benefit from higher transmission and information rate compared to their main competitor: the hemispherical analyser; the drawback being their lower energy resolution. LÄS MER

  3. 12. Design of Time-to-Digital Converter Circuits for 3D Time-of-Flight Measurements

    Författare :Muhammad Tanveer; Harald Neubauer; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industriell elektronik; Industrial Electronics;

    Sammanfattning : The three-dimensional view of the world is something that we often take for granted, a phenomenon that has proven challenging for machine vision applications in which description of the environment requires the relative position and motion of different objects in the scene. Currently, range imaging (RIM) measurements are based on digital imaging technology and are merged with the ability to measure the distance to the corresponding object point in each pixel. LÄS MER

  4. 13. det meränmänskliga museet : Konservatorns bevarandepraktik som flyktlinje i modernitetens museum

    Författare :Caroline Owman; Christina Fredengren; Märit Simonsson; Stefan Bohman; Lotten Gustafsson Reinius; Umeå universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; Museology; museum; modernity; conservation; conservator; curator; more-than-human; posthumanism; environmental humanities; material feminisms; anthropocentrism; agency; dualism; dichotomies; agential realism; schizoanalysis; onto-ethico-epistemology; climate change; process ontology; care; thing ethics; killable creatures; invasive species; ecology; time; rhythm; alternative temporalities; intra-generational; Museologi; museum; modernitet; konservering; konservator; curator; more-than-human; posthumanism; miljöhumaniora; materiell feminisms; antropocentrism; agens; dualism; dikotomier; agentiell realism; schizoanalys; onto-etisk-epistemologi; klimatförändring; processontologisk; omsorg; tingetik; dödbara djur; skadedjur; ekologisk; tid; rytm; alternativa temporaliteter; intra-generationell; museology; museologi;

    Sammanfattning : This thesis takes the conservator as a starting point to explore more-than-human aspects of the museum of modernity. Assuming that built-in obstacles impinge when museums today deal with environmental issues‚ it investigates new and alternative perspectives on the engagement with our immediate surroundings, in this case the museum objects. LÄS MER

  5. 14. Always on the wing - Fluid dynamics, flight performance and flight behavior of common swifts

    Författare :Per Henningsson; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Apus apus; aerodynamics; animal flight; kinematics; vortex wake; digital particle image velocimetry; DPIV; common swift; tracking radar; wind tunnel; migration; roosting flight;

    Sammanfattning : The aerodynamics and kinematics behind the flight of animals are relatively unknown. Although animal flight has been studied for several hundreds of years, it is only in recent time that we have the technical abilities to study the mechanistic basis of animal flight. LÄS MER

  7. 15. Analysis of Dynamic Flight Loads

    Författare :Natascha Jansson; Ulf Ringertz; David Eller; Peter Linde; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This thesis deals with the determination of loads on an aircraft struc- ture during flight. The focus is on flight conditions where the loads are significantly time-dependent. Analysis of flight loads is primarily motivated to ensure that structural failure is avoided. LÄS MER