Sökning: "Visual dependence"

Visar resultat 6 - 10 av 21 avhandlingar innehållade orden Visual dependence.

1. 6. Transverse Chromatic Aberration and Vision: Quantification and Impact across the Visual Field

   Författare :Simon Winter; Linda Lundström; Stephen Burns; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; transverse chromatic aberration; lateral chromatic aberration; visual optics; peripheral vision; central vision; dispersion; ophthalmic optics and devices; optical effects on vision; retinal imaging; myopia; human eye; Fysik; Physics;

   Sammanfattning : The eye is our window to the world. Human vision has therefore been extensively studied over the years. However, in-depth studies are often either limited to our central visual field, or, when extended to the periphery, only correct optical errors related to a narrow spectrum of light. LÄS MER

3. 7. Development and evaluation of a health education programme for elderly persons with age-related macular degeneration

   Författare :Synneve Dahlin-Ivanoff; Göteborgs universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Age-related macular degeneration; visual impairment; elderly; randomised study; daily occupation; occupational dysfunction; focus groups; health education; population study; ordered categorical data; reliability; responsiveness;

   Sammanfattning : The overall aim of this thesis was to develop and evaluate a health education programme for elderly persons with age-related macular degeneration (AMD). I. LÄS MER

4. 8. Modelling the Variability of Bending Strength in Structural Timber - Length and Load Configuration Effects

   Författare :Tord Isaksson; Avdelningen för Konstruktionsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; code; reliability-based design; Weibull; test standard; load configuration effect; length effect; weak section; machine grading; visual grading; variability; Structural timber; bending strength; simulation; monte carlo simulation.; Building construction; Byggnadsteknik;

   Sammanfattning : The load carrying capacity of a beam of structural timber is dependent both on the span of the beam and the type of loading. The longer the beam and the more uniform the moment distribution, the lower the load carrying capacity. This phenomenon is due to the variability of material properties within a piece of timber. LÄS MER

5. 9. The Preservation of Favoured Morphs in the Struggle Between Sexes

   Författare :Thomas Gosden; Evolutionär ekologi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Sexual Selection; Polymorphism; Density-dependence; Population divergence; Zygoptera; Sexual Conflict;

   Sammanfattning : Sexual selection is particularly likely to promote population divergence, because sexual traits are expected to be subject to rapid evolutionary change. Identifying the relative roles of particular barriers to the amount of total reproductive isolation between populations or closely related species can provide important clues to the mechanisms of population divergence and speciation Phenotypic trait differences among populations are thought to reflect the interaction between the intensity of gene flow versus the strength of local selection and drift. LÄS MER

7. 10. Re-establishing reading skills of elderly low vision patients : studies on Swedish low vision clinic clients

   Författare :Örjan Bäckman; Karolinska Institutet; Karolinska Institutet; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :elderly patients; low vision clinic; reading proficiency; cognitive capacity; low vision reading training; low vision rehabilitation; quality of life;

   Sammanfattning : This thesis is based on the project "Reading skills, reading training and technology for the visually handicapped - Prospects for the 1990s," carried out at the Department of Educational Research of the Stockholm Institute of Education 1988-1993. All data were collected in connection with this project. LÄS MER