Sökning: "teknik intresse"

Visar resultat 31 - 35 av 251 avhandlingar innehållade orden teknik intresse.

  1. 31. En problematisering av ungdomars intresse för naturvetenskap och teknik i skola och samhälle : Innehåll, medierna och utbildningens funktion

    Författare :Anders Jidesjö; Helge Strömdahl; Jari Lavonen; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Science and technology are important parts of culture. Thus today there is a need for a science education which promotes ‘science for all’ and ‘scientific literacy’ in order to prepare students for citizenship. Earlier studies indicate that many students find it hard to learn science and technology in school. LÄS MER

  3. 32. Innovative Contact Free Sensors for Metallurgical Process Control

    Författare :Donald Malmberg; Stuart M. Millman; Högskolan i Halmstad; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; microwave spectroscopy; laser; TDLAS; high temperature; gas; slag; NATURAL SCIENCES; NATURVETENSKAP; spectroscopy; slag analysis; high temperatures; Mät- och instrumenteringsteknik; Instrumentation technology; TDLAS; microwave; laser; Fysicumarkivet A:2003:Malmberg;

    Sammanfattning : The steel- and metal industry has an extensive production processing comprising many different process steps of solid, gaseous and liquid nature. Thus it is obvious that a number of different measurement technologies must be used to collect and evaluate key physical parameters which are necessary to control the production processes. LÄS MER

  4. 33. Comfort climate evaluation with thermal manikin methods and computer simulation models

    Författare :Håkan O. Nilsson; Högskolan i Gävle; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; equivalent temperature; subject; thermal manikin; mannequin; thermal climate assessment; heat loss; office environment; cabin climate; ventilated seat; computer model; CFD; clothing-independent; comfort zone diagram; Civil engineering and architecture; Samhällsbyggnadsteknik och arkitektur;

    Sammanfattning : Increasing concern about energy consumption and the simultaneous need for an acceptable thermal environment makes it necessary to estimate in advance what effect different thermal factors will have on the occupants. Temperature measurements alone do not account for all climate effects on the human body and especially not for local effects of convection and radiation. LÄS MER

  5. 34. Kolväten i luft vid bensinstationer

    Författare :Pia M Berglund; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; bensinångor; bensinmackar; exposition; kolväten; bensen; tankning; alkener;

    Sammanfattning : Kolväten i luft vid bensinstationer har undersökts med hjälp av gaskromatografiska analyssystem. I flertalet prover identifierades 20-30 lätta kolväten. Särskilt intresse ägnades åt det cancerogena kolvätet bensen samt åt alkenerna. LÄS MER

  7. 35. Assessment of Aircraft Radar Cross-Section for Detection Analysis

    Författare :Björn Persson; Ulf Ringertz; Martin Norsell; Peter Bull; João Tasso de Figueiredo Borges de Sousa; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Flyg- och rymdteknik; Aerospace Engineering; Försvarssystem;

    Sammanfattning : Hiding from and surprising an opponent are tactics that have been used in warfare throughout history. They were features that aircraft originally possessed when they were first used in military operations. However, development of military technology is an endless struggle between advances in technology and counter technology. LÄS MER