Sökning: "Johan Back"

Visar resultat 1 - 5 av 54 avhandlingar innehållade orden Johan Back.

1. 1. Low Back Pain : With Special Reference to Prevalence, Diagnosis, Treatment and Prognosis

   Författare :Johan Bogefeldt; Kurt Svärdsudd; Stefan Blomberg; Margaretha Eriksson; Gunnar Nilsson; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; cohort study; time trends; sickness absence; randomised controlled trial; practice patterns; observer variation; Family medicine; Allmänmedicin; Allmänmedicin; Family Medicine;

   Sammanfattning : Objectives. Ascertain if there has been a secular trend in 3-months prevalence of casually reported back pain. Evaluate if such back pain predicts concurrent health as well as future sick leave, disability pension, hospitalization and survival. Study differences in diagnostic assessment and labelling between physicians. LÄS MER

3. 2. Ecological embedding : stories of back-to-the-land ecopreneurs and energy descent

   Författare :Maxim Vlasov; Zsuzsanna Vincze; Karl Johan Bonnedahl; Gail Whiteman; Umeå universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; alternative organising; back-to-the-land; ecological embedding; ecopreneurship; degrowth; critical perspectives on sustainability; ethnography; narrative storytelling; alternativ organisering; den nya gröna vågen; ekologisk inbäddning; ekoprenörskap; kritiska hållbarhetsperspektiv; etnografi; narrativ ansats; berättelser; företagsekonomi; Business Studies; sustainability; hållbarhet; etik; Ethics;

   Sammanfattning : This thesis starts with the premise that to address ecological and climate crises, we need to understand their psychological and cultural roots found in the separation of modern societies from the natural world. This separation permeates mainstream approaches to sustainability that either sustain business-as-usual of the unbridled economic growth, or reform it with greener markets and technologies. LÄS MER

4. 3. Fear and avoidance in the development of a persistent musculoskeletal pain problem : implications for secondary prevention

   Författare :Katja Boersma; Steven Linton; Johan Vlaeyen; Geert Crombez; Örebro universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Psychology; pain-related fear; fear-avoidance model; back pain; disability; development; exposure; Psykologi; Psychology; Psykologi; Psykologi; Psychology;

   Sammanfattning : This dissertation focused on the role of fear and avoidance in the development of a persistent back pain problem. The first aim of this dissertation was to study when and how cognitive, affective and behavioral factors influence one another in the development of persistent pain and disability. LÄS MER

5. 4. Buffer Related Dispersive Effects in Microwave GaN HEMTs

   Författare :Johan Bergsten; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; trapping effects; C-doping; AlGaN GaN interface quality; recessed ohmic contacts; GaN HEMT; buffer design;

   Sammanfattning : In applications such as mobile communication and radar, microwave power generation at high frequency is of utmost importance. The GaN HEMT offers a unique set of properties that makes it suitable for high power amplification at high frequencies. LÄS MER

7. 5. Compiler generation for parallel languages from denotational specifications

   Författare :Johan Ringström; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : There exist several systems for the generation of compiler front-ends from formal semantics. Systems that generate entire compilers have also started to appear. Many of these use attribute grammars as the specification formalism, but there also are systems based on operational semantics or denotational semantics. LÄS MER