Browsing Fysisk institutt by Issue Date

Now showing items 21-40 of 2088

  • CMOS Ultra Wide-Band Impulse Radio Receiver Front-End 
    Meisal, Kjetil (Master thesis / Masteroppgave, 2005)
    As most radio communication is based on a narrow banded carrier tech­ nique, the technique this thesis is based on utilizes single impulse trans­missions and wide bandwidths. The technique is called Ultra WideBand Impulse ...
  • A study of magnetospheric boundary layers by Cluster 
    Osmundsen, Ellen (Master thesis / Hovedoppgave, 2005)
    In this thesis, the spacecraft potential measured by the EFW instrument on Cluster has been used to map the plasma density distribution of the magnetosphere. A relation between the spacecraft potential and the plasma density ...
  • Simulation of Nanoscale CMOS 
    Hussein, Abdel Monim Elsir (Master thesis / Masteroppgave, 2005)
    Abstract - Device scaling is directly responsible for Moore’s law and has enabled remarkable improvements in CMOS (Complementary Metal-Oxide-Semiconductor) device performance. As device dimension shrinks, the channel ...
  • Optimal belastningssituasjon for måling av benstivhet ved forlengelse 
    Festø, Ellinor (Master thesis / Hovedoppgave, 2005)
    Ulempen med benforlengelse med et eksternt apparat er at det er ubehagelig for pasienten å ha apparatet påmontert i den lange tilhelingstiden etter oppnådd forlengelse. På grunn av ubehaget og ulempene med å bære apparatet ...
  • ESR-dosimetri ved nøytron- og ionebestråling av litium format 
    Waldeland, Einar (Master thesis / Masteroppgave, 2005)
    Litium format monohydrat (Lifo) er i denne oppgaven undersøkt som dosimetermateriale i ESR- (Elektron Spinn Resonans) dosimetri, med vekt på responsen ved nøytron- og ionebestråling. Lifo er tidligere vist å være et lovende ...
  • An AER Analog Silicon Cochlea Model using Pseudo Floating Gate Transconductors 
    Berge, Hans K. Otnes (Master thesis / Masteroppgave, 2005)
    This master thesis discusses the VLSI implementation of an Analog VLSI Cochlea Model with an AER output interface. The cochlea uses a unidirectional filter cascade approach, and utilizes a capacitively coupled bi-quad ...
  • Analyse av ein konveksjonskanal og rekonstruksjon av den ionosfæriske storskalakonveksjonen observert med EISCAT 
    Skjæveland, Åsmund (Master thesis / Hovedoppgave, 2005)
    Denne oppgåva studerer ein smal (100-200 km) konveksjonskanal observert med EISCAT Svalbard Radar (ESR) den 20. desember 2001. Oppgåva har to mål. Det eine er å forklara den observerte konveksjonskanalen og fastslå kva for ...
  • Adaptive interference cancellation between basestations in a TDD based system 
    Ojelade, David Olalabi Akindipo (Master thesis / Masteroppgave, 2005)
    ABSTRACT There is a considerable and growing interest in broadband system for providing high capacity communications and broadcasting, through for example high speed Internet. Because of the large bandwidth available in ...
  • A Spatial RAKE receiver for Real-Time UWB-IR Applications 
    Limbodal, Claus (Master thesis / Masteroppgave, 2005)
    The concept of ultra wideband impulse radio has interesting properties. The wide transmission band makes penetration through different ma­ terials better than narrow band transmission. The lack of carrier may be traded for ...
  • Alenestående solvarmeanlegg med solceller til styring og drift 
    Brnic, Katharina (Master thesis / Hovedoppgave, 2005)
    Abstract A solar thermal system transforms radiation from the sun into heat which in turn can cover heating demands. The energy is absorbed by a solar collector and transported to a heat store by pipes and a heat carrier ...
  • The red-sky enigma over Svalbard in December 2002 
    Sigernes, Fred; Lloyd, N.; Lorentzen, Dag Arne; Neuber, R.; Hoppe, U.-P.; Degenstein, D.; Shumilov, N.; Moen, Jøran Idar; Gjessing, Yngvar; Havnes, Ove; Skartveit, A.; Raustein, E.; Ørbæk, J.B.; Deehr, CS (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2005)
    On 6 December 2002, during winter darkness, an extraordinary event occurred in the sky, as viewed from Longyearbyen (78° N, 15° E), Svalbard, Norway. At 07:30 UT the southeast sky was surprisingly lit up in a deep red ...
  • Ulike metoder for å besteme energiutbyttet i et solvarmeanlegg 
    Spikkeland, Gunn (Master thesis / Hovedoppgave, 2005)
    I denne oppgava er det utvikla en enkel metode for å bestemme energiutbyttet i et solvarmeanlegg. I slike anlegg omformes strålingsenergien fra sola ved hjelp av en solfanger til varmeenergi i et transportmedium som for ...
  • An attempt to study ion outflow in the polar cusp with conjugated measurements from EISCAT and Cluster 
    Nielsen, Andreas Quamme (Master thesis / Masteroppgave, 2005)
    This thesis sought to find ion outflow as measured by Cluster in the polar cusp, in conjunction with ionospheric upflow events observed by the EISCAT radars outside Longyearbyen on Svalbard (ESR). The constraints placed ...
  • Time dynamic channel model for broadband fixed wireless access systems 
    Cheffena, Michael (Master thesis / Masteroppgave, 2005)
    Abstract Broadband fixed wireless access (BFWA) systems have been recognized as an effective first kilometer solution for broadband services to residential and business customers. The large bandwidth available in frequency ...
  • Forward and midrapidity like-particle ratios from p+p collisions at √s=200 GeV 
    Bearden, IG; Beavis, D; Besliu, C; Budick, B; Boggild, H; Chasman, C; Christensen, CH; Christiansen, P; Cibor, J; Debbe, R; Enger, E; Gaardhoje, JJ; Germinario, M; Hagel, K; Holm, A; Holm, A; Holme, AK; Ito, H; Jakobsen, E; Jipa, A; Jundt, F; Jordre, JI; Jørdre, Jens Ivar; Jorgensen, CE; Karabowicz, R; Keutgen, T; Kim, EJ; Kozik, T; Larsen, Truls Martin; Lee, JH; Lee, YK; Løvhøiden, Gunnar; Majka, Z; Makeev, A; Mikelsen, Mads; Murray, MJ; Natowitz, J; Nielsen, BS; Norris, J; Olchanski, K; Ouerdane, D; Planeta, R; Rami, F; Ristea, C; Rohrich, D; Røhrich, Dieter; Samset, Bjørn Hallvard; Sandberg, D; Sanders, SJ; Scheetz, RA; Staszel, P; Tveter, Trine Spedstad; Videbaek, F; Wada, R; Wieloch, A; Yin, Zhongbaao; Zgura, IS (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2005)
  • Structural studies of hydrides of Zr2Cu, Zr2Pd and LaPtIn 
    Jensen, Ingvild Julie Thue (Master thesis / Hovedoppgave, 2006)
    In this work hydrides formed from three different intermetallics compounds, Zr2Cu, Zr2Pd and LaPtIn, were investigated, with focus on hydrogen induced structural changes. The main methods were neutron (PND) and synchrotron ...
  • Undersøkingar av celler sin respons på intern bestråling med lågenergetiske elektron ved ultralåge doseratar 
    Bjørhovde, Ingunn (Master thesis / Hovedoppgave, 2006)
    Samandrag Humane celler sin respons på stråling endrar seg med varierande doseratar. I denne oppgåva har to humane cellelinjer vorte bestrålte med ultralåge doseratar for å kartleggje effekten av strålinga ved bestrålingstider ...
  • Polar cap patch occurrence rate over Svalbard and it's dependence on IMF By 
    Gulbrandsen, Njål (Master thesis / Masteroppgave, 2006)
    Polar cap patches are regions of enhanced plasma density, seen to drift fromthe sunlit ionosphere on the day side, over the polar cap, and into the night side Auroral oval. The patches are related to substorm activity and ...
  • Anisotrope universmodeller med materie og mørk energi / Gerald R. Torgersen 
    Torgersen, Gerald Ruiner (Master thesis / Hovedoppgave, 2006)
  • Electroweak Decay of Mesons with Charm 
    Thörn, Pierre Andreas (Master thesis / Masteroppgave, 2006)
    From the time of its introduction, the standard model has become a very well established model in particle physics. In fact, no experiment so far has shown any violation of this model. Still, there are some unsatisfying ...