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Au wetting and nanoparticle stability on GaAs(111)B

Au nanoparticles and Au films for growth of nanowires on the GaAs(111)B surface have been studied by a combination of experimental and theoretical techniques. If Au is present in either form, annealing to temperatures relevant for nanowire growth results in the formation of a thin Au wetting layer. Based on density functional theory calculations and experimental data, a structural model is propose

Structures of String Matching and Data Compression

Popular Abstract in Swedish Presenterar resultat inom algoritmer och datastrukturer för att hantera sekventiella data (strängar), med användningar bland annat inom datakomprimering. Särskilt behandlas varianter av suffixträd och näraliggande ämnen, som sortering av suffix. Vad gäller komprimering behandlas modellering av källor med hjälp av både strängbaserade metoder (t.ex. Ziv-Lempel) och probabThis doctoral dissertation presents a range of results concerning efficient algorithms and data structures for string processing, including several schemes contributing to sequential data compression. It comprises both theoretic results and practical implementations. We study the suffix tree data structure, presenting an efficient representation and several generalizations. This includes augmenti

The safety of passengers in wheelchairs in special transportation services studied with interviews and assessments

It is important to provide scientific knowledge of wheelchairs as occupant-protecting seats in motor vehicles. This study aimed at examining the situation in Special Transportation Services (STS), an important mode of transport for wheelchair users in Sweden. The perceived safety levels were assessed and examined, and extensive field experience was gained. During the study in three Swedish cities

Cognitive approach to audio description

The article presents theoretical and methodological approaches relevant for the research on audio description (AD) and exemplifies the application of these approaches by studies on live audio description of films conducted at Lund University. A cognitive, reception-oriented perspective on AD and the framework of embodied cognition are in focus. It is claimed that previous research on scene percept