Search for dissertations about: "surveyor"

Found 3 swedish dissertations containing the word surveyor.

2. 1. Harmonic Mitigation in Traction Drives

   Author : Hans Bängtsson; Industriell elektroteknik och automation; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hydraulics; Mechanical engineering; converter; line interference; track circuit; Railway signalling system; vacuum technology; vibration and acoustic engineering; Maskinteknik; hydraulik; vakuumteknik; vibrationer; akustik;

   Abstract : In railway traffic the low friction between wheel and rail causes long braking distances, normally much longer than the sight distance of the driver, i.e. if the driver starts the braking when a problem on the track is discovered, it might be too late to brake the train. Therefore, safe railway traffic can not only rely on the driver. READ MORE

4. 2. Mars: environment, surface and exploration ethics

   Author : Ella Carlsson; Luleå tekniska universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysik; Fysik;

   Abstract : This licentiate thesis treats the solar wind interaction with the martian atmosphere and the water related features known as gullies, as well as some ethical issues related to the human exploration of Mars. The composition of the escaping plasma at Mars has been investigated in an analysis of data from the IMA sensor, which is part of the ASPERA-3 instrument suit onboard the European satellite Mars Express. READ MORE

5. 3. Mars : plasma environment and surface hydrology

   Author : Ella Carlsson; Luleå tekniska universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysik; Physics;

   Abstract : This doctoral thesis treats parts of the solar wind interaction with the Martian atmosphere and the water-related features known as gullies. The composition of the escaping plasma at Mars has been investigated in an analysis of data from the IMA sensor, which is a part of the ASPERA-3 instrument suit onboard the European satellite Mars Express. READ MORE