Sökning: "distance measurements"

Visar resultat 1 - 5 av 349 avhandlingar innehållade orden distance measurements.

  1. 1. Determination of the thermal conductivity of the insulation in district heating mains : Field measurements

    Författare :Karin Margaretha Borgström; Högskolan i Halmstad; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; district heating main; field measurements; thermal conductivity; measuring method; heat flow measurement; heat flux sensor; Material physics with surface physics; Materialfysik med ytfysik;

    Sammanfattning : This thesis concerns the development of a measurement method for determination in the field of the thermal conductivity of the insulation in buried district heating mains. The thermal conductivity of the insulation is calculated from the measured value of the radial heat flow through the heating main, the measured temperature difference across the insulation, and the dimensions of the heating main. LÄS MER

  3. 2. Firms, Employment and Distance: Essays on the Swedish Regional Economy

    Författare :Sara Åhlén; Rikard Forslid; Marius Brülhart; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Regions; Firms; Employment; Distance; Economics; Nationalekonomi; Economics; nationalekonomi;

    Sammanfattning : This thesis consists of three essays on the spatial relationships of economic activities in Swedish regions."Governmental Interventions and Market Potential - Determinants of Regional Variations in Firm Births"This paper examines determinants of regional variations in Swedish firm births over the period 1992-2002. LÄS MER

  4. 3. Icelandic patients in oncology outpatient care: Distress, coping and satisfaction with care

    Författare :Elisabet Hjörleifsdottir; Institutionen för hälsovetenskaper; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; communication; satisfaction; health care professionals; outpatients; gender; age; anxiety; travel distance; coping; psychological distress; radiotherapy; chemotherapy; Cancer; measurements; Cytology; oncology; cancerology; Cytologi; onkologi; cancer;

    Sammanfattning : This study was conducted at three oncology outpatient clinics in Iceland. The overall aim was to investigate outpatient psychosocial distress, coping strategies and satisfaction with care and to explore patients? experiences of having cancer while receiving treatment. LÄS MER

  5. 4. Borrowing the Bat's Ear for Automation - Ultrasonic Measurements in an Industrial Environment

    Författare :Gunnar Lindstedt; Industriell elektroteknik och automation; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Automatiska system; control engineering; robotics; Automation; electrostatic transducer; piezoelectric transducer; echolocation; bat; automation; localization; recognition; geometry; distance; measurement; ultrasound; robotteknik; reglerteknik;

    Sammanfattning : This work focuses on measurement principles based on ultrasound for applications in industrial automation. The measurements made are of geometric nature. The methods used are when possible based on experience and/or inspiration from the study of bats. LÄS MER

  7. 5. Distance Protection of Transmission Lines with High Levels of Series Compensation : A study on frequency and time domain communication independent distance protection for series compensated lines

    Författare :Md Tanbhir Hoq; Nathaniel Taylor; Jianping Wang; Claus Leth Bak; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Series capacitor; Series compensation; Transmission line; Distance protection; Incremental quantity; Lissajous curve; RL model; RLC model; Seriekondensator; Seriekompensation; Transmissionslinje; Distansskydd; Inkrementell kvantitet; Lissajous-kurva; RL-modell; RLC-modell; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Series capacitors are used in electric transmission lines to increase their power transfer capacity. They compensate for the inductive reactance of the line. They offer a useful alternative to building new lines, in view of economic and environmental constraints. LÄS MER