Sökning: "A Hagström"

Visar resultat 16 - 20 av 46 avhandlingar innehållade orden A Hagström.

1. 16. Understanding Certificate Revocation

   Författare :Åsa Hagström; Robert Forchheimer; Ingemar Ingemarsson; Håkan Kvarnström; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Revocation; Public-key certificates; Graph transformation; Information science; Informationslära;

   Sammanfattning : Correct certificate revocation practices are essential to each public-key infrastructure. While there exist a number of protocols to achieve revocation in PKI systems, there has been very little work on the theory behind it: Which different types of revocation can be identified? What is the intended effect of a specific revocation type to the knowledge base of each entity?As a first step towards a methodology for the development of reliable models, we present a graph-based formalism for specification and reasoning about the distribution and revocation of public keys and certificates. LÄS MER

3. 17. Occupational exposure during production of wood pellets in Sweden

   Författare :Katja Hagström; Kåre Eriksson; Gunilla Lindström; Paul Demers; Örebro universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Occupational hygiene; wood dust; resin acids; VOC; variability; determinant of exposure; overexposure; dermal exposure; Occupational medicine; Yrkesmedicin; Enviromental Science; Miljövetenskap;

   Sammanfattning : The aims of the studies underlying this thesis were to assess workers’ air exposure to wood dust and various chemicals, and to evaluate the variability in exposure and occupational dermal exposure to resin acids during the production of wood pellets in Sweden. Personal air measurements of wood dust, monoterpenes, resin acids and nitrogen dioxide (as a marker of diesel exhaust), accompanied by area measurements of these substances, VOCs and carbon monoxide, were performed at up to ten plants. LÄS MER

4. 18. Metabolic Disturbances in Relation to Serum Calcium and Primary Hyperparathyroidism

   Författare :Emil Hagström; Per Hellman; Ewa Lundgren; Jonas Rastad; Svante Jansson; Uppsala universitet; []
   Nyckelord :Surgery; Primary hyperparathyroidism; Parathyroidectomy; Insulin sensitivity; Lipoproteins; Glucose metabolism disorders; Bone density; Calcium; Kirurgi;

   Sammanfattning : Primary hyperparathyroidism (pHPT), characterized by elevated serum levels of calcium and parathyroid hormone (PTH), is associated with a number of metabolic derangements causing secondary manifestations. These include osteoporosis and increased risk of fractures, but also risk factors for cardiovascular morbidity and mortality. LÄS MER

5. 19. Ultrafast resonant magnetic scattering at the European XFEL

   Författare :Nanna Zhou Hagström; Stefano Bonetti; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; XFEL; ultrafast magnetism; holography; SAXS; fysik; Physics;

   Sammanfattning : Magnetic materials are of interest in a wide range of nanotechnologies such as for data storage, memory, logic, and sensing applications. Today, there is a strong desire to manipulate magnetism at timescales below the picosecond. There is therefore a high motivation in studying ultrafast magnetism at the nanoscale. LÄS MER

7. 20. Meningar om uppsatsskrivande i högskolan

   Författare :Eva Hagström; Tomas Englund; Owe Lindberg; Ference Marton; Örebro universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; higher education; student writing; thesis writing; student writing handbooks; pragmatism; textual analysis; Education; Pedagogik; Pedagogik; Education;

   Sammanfattning : This dissertation is about the writing of theses in Swedish higher education. The aim is to construct meanings about thesis writing from different kinds of texts. The meanings are answers to the overall question about what good teaching can be in relation to thesis writing, and to what extent handbooks on writing can enhance such teaching. LÄS MER