Sökning: "echoes"

Visar resultat 1 - 5 av 57 avhandlingar innehållade ordet echoes.

1. 1. Spatial decomposition of ultrasonic echoes

   Författare :Magnus Sandell; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Signalbehandling; Signal Processing;

   Sammanfattning : The pulse-echo method is one of the most important in ultrasonic imaging. In many areas, including medical applications and nondestructive evaluation, it constitutes one of the fundamental principles for aquiring information about the examined object. LÄS MER

3. 2. Och nu börjar historien : Hjalmar Söderbergs novellkonst

   Författare :Miranda Landen; Litteraturvetenskap; []
   Nyckelord :HUMANIORA; HUMANITIES; illustrations; short stories in periodicals; modern collection; echoes; short-story collection; twist; narrative modes; closure; external narrator; debate-driven story; travel story; hunter’s-fire story; early 20th century writing; late 19th century writing; classic short story; short format; short story; genre history and genre theory of the short story; story type; narration; Hjalmar Söderberg;

   Sammanfattning : Hjalmar Söderberg (1869–1941) published some seventy short stories in five collections, Historietter (1898), Främlingarna (1903), Det mörknar öfver vägen (1907), Den talangfulla draken (1913) and Resan till Rom (1929). The present study explores Söderberg’s short fiction from a genre-historical and genre-theoretical perspective. LÄS MER

4. 3. Remnant echoes of the past : Archaeological geophysical prospection in Sweden

   Författare :Andreas Viberg; Kerstin Lidén; Bo Olofsson; Rinita Dalan; Bruce Bevan; Neil Price; Stockholms universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; Archaeological prospection; geophysical survey; Sweden; Ground-penetrating radar; magnetometry; Slingram; magnetic susceptibility; Neolithic; Migration period; Viking Age; Middle Ages; Öland; Gotland; Sigtuna; Lapland; Archaeological Science; laborativ arkeologi;

   Sammanfattning : The aim of this thesis has been to investigate the benefits, pitfalls and possibilities of using geophysical methods in archaeological projects. This is exemplified by surveys carried out at archaeological sites in different geographical and chronological contexts. LÄS MER

5. 4. Investigation of Polar Mesosphere Summer Echoes in Northern Scandinavia

   Författare :Victoria Barabash; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Polar Mesosphere Summer Echoes; middle atmospheric dynamics; ionospheric disturbances; solar radiation; aerosol; MST radar; planetary waves; noctilucent clouds; Fysik; Physics; Fysik; rymdfysik; Space Physics;

   Sammanfattning : This PhD thesis deals with phenomena which are closely related to the unique thermal structure of the polar summer mesosphere, namely Polar Mesosphere Summer Echoes (PMSE). PMSE are strong radar echoes commonly observed by VHF MST radars from thin layers in the 80-90 km altitude interval at high latitudes during summer. LÄS MER

7. 5. Radio echoes from meteor trails and ionospheric scattering centres

   Författare :Nicolai Herlofson; Stockholms högskola; []
   Nyckelord :;

   Sammanfattning : .... LÄS MER