Search for dissertations about: "useful life"

Showing result 1 - 5 of 630 swedish dissertations containing the words useful life.

  2. 1. Improved remaining useful life estimations for on-condition parts in aircraft engines

    Author : Veronica Fornlöf; Anna Syberfeldt; Anders Skoogh; Högskolan i Skövde; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Aircraft engine maintenance; Reliability; Remaining useful life; On-condition parts; Prognosis; Technology; Teknik; Production and Automation Engineering; Produktion och automatiseringsteknik;

    Abstract : This thesis focuses on obtaining better estimates of remaining life for on-condition (OC) parts in aircraft engines. Aircraft engine components are commonly classified into three categories, life-limited parts (LLP), OC-parts and consumables. Engine maintenance typi-cally accounts for 10% to 20% of aircraft-related operating cost. READ MORE

  4. 2. Swedish Working Life Research : Formation and conceptual development of a research field in transition

    Author : Carin Håkansta; Ann Bergman; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industrial Work Environment; Industriell produktionsmiljö; Arbetsvetenskap; Human Work Science;

    Abstract : The purpose of this thesis is to contribute to the understanding of working life research in Sweden by focusing on the conceptual and institutional evolution of the field. The analyses include the roles of the researchers and other actors as well as theories and processes that form and have formed working life research. READ MORE

  5. 3. Causes and consequences of life-history variation : The effects of parasites, glucocorticoids, and environmental conditions in the collared flycatcher (Ficedula albicollis)

    Author : Kevin Fletcher; Lars Gustafsson; Anders Pape Moller; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Collard flycatcher; Haemosporidian blood parasite; glucocorticoid; life history;

    Abstract : Life-history is the study of all the different stages of life that affect reproductive success and survival between the birth and death of an organism. The reproductive output of an organism is constrained by many things including time, resource, disease agents and environmental conditions. READ MORE

  6. 4. Negotiating Conventions : cleanliness, sustainability and everyday life

    Author : Tullia Jack; Sociologi; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; conventions; sustainability; everyday life; consumption; water; energy;

    Abstract : Cleanliness has seen a rapid increase in both developed and developing countries, along with a parallel rise in not only water and energy but also cleaning products consumed. Water and energy supply as well as dealing with waste are environmentally critical in securing a sustainable future. READ MORE

  7. 5. Service life estimation in building design : A development of the factor method

    Author : Björn Marteinsson; Christer Sjöström; Michael A. Lacasse; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Construction engineering; factor method; service life prediction; durability; degradation; Byggnadsteknik; Building engineering; Byggnadsteknik;

    Abstract : The built environment usually constitutes a very important part of the real capital of a nation, and the construction sector represents more than 10% of the yearly Gross National Product of the industrialised world. Good planning of all construction is important, and consideration of the service life of the work is of great interest and is a significant aspect of sustainability considerations. READ MORE