Search for dissertations about: "threshold values"

Showing result 16 - 20 of 128 swedish dissertations containing the words threshold values.

  2. 16. Fault detection in lambda-tuned control loops

    Author : Magnus Berndtsson; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Reglerteknik; Control Engineering;

    Abstract : Poorly operating control loops cause loss in productivity in almost every industry worldwide. Therefore performance monitoring has been an active area of research for the past decades. In this work, a newly developed fault detection method is applied to the monitoring of lambda-tuned control loops. READ MORE

  4. 17. Biological effects of alternating magnetic fields with special reference to the visual system

    Author : Per Lövsund; Linköpings universitet; []
    Keywords : MEDICINE; MEDICIN;

    Abstract : The aims of the present investigation were to contribute to more knowledge of the interaction between extremely low frequency magnetic fields and excitable tissue and to widen the basic understanding of the mechanisms behind these effects. The human visual system and the frog retina were used as model systems. READ MORE

  5. 18. Hearing in young men : the influence of military noise and epidemiological aspects

    Author : Per Muhr; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : During compulsory military service, the hearing capacity of the conscripts is at risk, because of exposure to continuous and impulse noise that exceeds the threshold levels of the European Union and the Swedish Work Environment Authority. In young adult life, a multitude of other risk factors also might result in auditory symptoms and hearing impairment. READ MORE

  6. 19. Low and Medium Level Vision Using Channel Representations

    Author : Per-Erik Forssén; Gösta Granlund; Jim Little; Linköpings universitet; []
    Keywords : TECHNOLOGY; TEKNIKVETENSKAP;

    Abstract : This thesis introduces and explores a new type of representation for low and medium level vision operations called channel representation. The channel representation is a more general way to represent information than e.g. as numerical values, since it allows incorporation of uncertainty, and simultaneous representation of several hypotheses. READ MORE

  7. 20. Lower limb venous incompetence and the effect of radiofrequency ablation versus open surgery : Focus on haemodynamics, quality of life and health economic aspects

    Author : Oskar Nelzén; Helene Zachrisson; Toste Länne; Johan Skoog; Gunnar Plate; Linköpings universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Chronic venous incompetence; Varicose veins; Radiofrequency ablation; High ligation stripping Duplex ultrasound; Strain-gauge plethysmography; Quality of Life; Health economic evaluation;

    Abstract : Chronic venous incompetence (CVI) is a common condition, and varicose vein treatment is one of the most-common surgical procedures performed worldwide. Common symptoms of CVI are pain, cramps, itching, feeling of leg heaviness and venous claudication. Advanced CVI can lead to skin changes, eczema and venous ulcers. READ MORE