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Assistive robots have received considerable research attention due to the increase of the senior population around the world and the shortage of care-givers. However, limited attention has been paid to involving seniors in the de-sign process in order to elicit their attitudes and perceptions of having their own robot. This study addresses this issue. We conducted a workshop with 14 Swe-dish senio

An extensive investigation of the multilamellar vesicles (La*), lamellar (La), and multiply connected sponge (L3) phase formed in surfactant systems is presented in this thesis. These membrane structures were studied using surfactant systems containing poly(oxyethylene) alkyl ethers, n-CnH2n+1(OCH2CH2) mOH, commonly abbreviated as CnEm. This class of nonionic surfactants, often viewed as short AB

This chapter does not deal with any practical aspects of light measurement, only with theoretical concepts. The following concepts are explained: energy fluence, energy fluence rate, photon fluence, photon fluence rate, radiance and mol, as well as the following superfluous or obsolete terms and synonyms: actinic flux, space irradiance, scalar irradiance, spherical irradiance, vectorial irradiance

The tool life model formulated by Bertil Colding is limited to the use of a specified tool life criterion. The Colding equation describes the relationship between tool life, cutting speed and the equivalent chip thickness. The Colding equation is based on five constants which have unique values for each selected value of the tool life criterion. This paper investigates how these Colding constants

This thesis presents a number of results and algorithms for the numerical solution of problems in geometric computer vision. In geometric computer vision one tries to extract geometric information about the world and the observer from a sequence of images. Estimation of scene structure and camera motion using only image data has been one of the central themes of research in photogrammetry, geodesy

Popular Abstract in Swedish I avhandlingen presenteras resultaten från studier av EGF-moduler från blodkoagulationsproteiner. Dessa studier har utförts med högupplösande kärnmagnetisk resonansspektroskopi. Resultaten av studierna återges i denna populärvetenskapliga sammanfattning. Som bakgrund ges inledningsvis en introduktion till den grundläggande biologin och den teknik som använts i studiernaModules are independently folding protein domains defined on the gene level. The epidermal growth factor-like (EGF) modules are involved in protein-protein interactions and are found in numerous membrane proteins and extracellular proteins, including many proteins of the blood coagulation system. A subset of the EGF modules binds one Ca2+ with an affinity that is often influenced by the neighbouri

Desalting technologies and fresh water production has been developed over the years, including primarily thermal and membrane processes. Five different types of desalination technology were studied and compared for long-term of use namely, thermal processes include multistage flash evaporation (MSF), multiple effect evaporation (ME), and vapor compression (VC) and membrane processes contain revers

Elasticity and damping are significant properties of rubber, taken advantage of in engineering applications. It is therefore important that the constitutive model accurately captures these aspects of the mechanical behavior. In the first part of the thesis a description of theory and experiments for determination of hyperelastic parameters required for finite element analysis is provided. Test sp

This thesis focuses on the possibilities to reduce fouling by 1.Modifying the stainless steel surface. For this purpose, surfaces modified with state-of-the-art material science techniques, such as SiF3+ and MoS22+ ion implantation, Diamond-like Carbon (DLC) sputtering, DLC, DLC-Si-O and SiOx Plasma Enhanced Chemical Vapour Deposition (PECVD), autocatalytic Ni-P-PTFE and silica coating, have been

Popular Abstract in English The present work deals with fracture in structures which are exposed to relatively few cycles of static loading during their life-time (maximum some ten thousand). Structures exposed to nearly monotonic loading are rare, except for such loaded mainly by their own weight. In spite of this fact, fracture mechanic methods developed for monotone loading are commonly used onThe experimental results presented confirm the anticipation that it is extremely important not to confuse the concept of 'static loading' with the one of 'monotonic loading'. In principle three different crack configurations were investigated in: edge-cracks, internal flaws and surface cracks. The results showed that the same calculation method could be used for all the investigated crack types. T

Popular Abstract in Swedish När en kärlskada uppstår måste skadan repareras innan alltför mycket blod hinner lämna blodbanan. Kärlet självt kan dra ihop sig till viss del för att minska blodflödet. Vid kärlskadan exponeras strukturer som normalt inte skall ha kontakt med blodet, en sådan struktur är t.ex. ämnet kollagen. Till kollagenet binds blodplättar (trombocyter) som tillfälligt täpper till sThe investigations presented in this thesis have evaluated different strategies to prevent thrombosis in an experimental model of deep arterial injury in rats. Unfractionated heparin (UFH) is often used to prevent thrombosis in microvascular surgery and in other vascular interventions, but a major drawback of UFH is increased bleeding. In the first paper the low-molecular-weight heparin (LMWH) da