Sökning: "sample allocation"

Visar resultat 1 - 5 av 50 avhandlingar innehållade orden sample allocation.

1. 1. Efficient strategies for collecting posture data using observation and direct measurement

   Författare :Per Liv; Svend Erik Mathiassen; Marina Heiden; Leif Nilsson; Ingvar Bergdahl; Stephen Bao; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Exposure assessment; arm elevation; exposure variability; variance components; random effects model; precision; bias; sample size; sample allocation; calibration; bootstrapping; Occupational and Environmental Medicine; arbets- och miljömedicin;

   Sammanfattning : Relationships between occupational physical exposures and risks of contracting musculoskeletal disorders are still not well understood; exposure-response relationships are scarce in the musculoskeletal epidemiology literature, and many epidemiological studies, including intervention studies, fail to reach conclusive results. Insufficient exposure assessment has been pointed out as a possible explanation for this deficiency. LÄS MER

3. 2. Utilization and allocation of organs for transplantation - medical and ethical aspects

   Författare :Marie Omnell-Persson; Kirurgi; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; estetik; metafysik; kunskapsteori; ideologi; Immunology; serology; transplantation; Immunologi; serologi; ideology; epistemology; aesthetics; metaphysics; Systematic philosophy; ethics; utilization; organ donation; kidney transplantation; Allocation; attitudes; Praktisk filosofi;

   Sammanfattning : Great efforts have been made to find solutions to the shortage of organs, such as extending the donor pool by accepting so-called marginal donors and development of transplantation of organs from animals (xenotransplantation, xt). Due to the scarcity of organs, there is a long tradition of prioritizing among patients on the waiting list for transplantation. LÄS MER

4. 3. Tid till förfogande : Förändrad användning och fördelning av undervisningstid i grundskolans senare år?

   Författare :Mikaela Nyroos; Lisbeth Lundahl; Anders Lidström; Mikael Alexandersson; Umeå universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; School autonomy; time allocation; time use; pupil influence; pupil individualisation; teacher work; change.; Pedgogical work; Pedagogiskt arbete;

   Sammanfattning : The Swedish education system has undergone decentralisation and deregulation since the late 1970s. The 1999 parliamentary resolution for a 5-year experiment of increased school autonomy in time allocation, was a late step in this development. LÄS MER

5. 4. Older people's views of prioritisation and resource allocation in health care

   Författare :Elisabet Werntoft; Institutionen för hälsovetenskaper; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Prioritisation; Resource allocation; View; Health care; Gerontologi; Gerontology; Older people;

   Sammanfattning : The aim of this thesis was to investigate older people's views and experience of prioritisation and resource allocation in health care, which is important because older people are the group that use public health care and service most. The aim was also to investigate differences in the view of prioritisation and resource allocation in relation to age, gender, housing, health-related quality of life, financial situation and degree of dependency between the participants receiving and those not receiving care and service. LÄS MER

7. 5. Optimal adaptive designs and adaptive randomization techniques for clinical trials

   Författare :Yevgen Ryeznik; Warwick Tucker; Andrew Hooker; Franz König; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; optimal designs; optimal adaptive designs; randomization in clinical trials; restricted randomization; adaptive randomization; unequal cost; allocation ratio preserving randomization procedures; heterogeneous costs; multi-arm clinical trials; randomization-based inference; unequal allocation; Tillämpad matematik och statistik; Applied Mathematics and Statistics;

   Sammanfattning : In this Ph.D. thesis, we investigate how to optimize the design of clinical trials by constructing optimal adaptive designs, and how to implement the design by adaptive randomization. LÄS MER