Filtyp
The performance of an iris recognition system depends greatly on how well the iris segmentation part of the system performs its task. The performance of an iris segmenta- tion algorithm can be evaluated using different criteria and methods. Some of the methods evaluate the performance of the segmentation algorithm based on the performance of the whole iris recognition system. Other methods evaluat
A stability criterion for nonlinear systems, derived by the first author (2000), can be viewed as a dual to Lyapunov's second theorem. The criterion is stated in terms of a function which can be interpreted as the stationary density of a substance that is generated all over the state space and flows along the system trajectories towards the equilibrium. The new criterion has a remarkable convexity
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
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
A proposal for a new synchrotron light source, MAX 4, is presented. The main components are two identical storage rings operated at different electron beam energies and equipped with superconducting insertion devices. Small beam emittances will yield high brilliance radiation over a wide spectral range. A small horizontal emittance is achieved by using a large number of cells with gradient dipoles
The historical role of European farming in southern and central Africa is a delicate matter that has received a great deal of attention among scholars over the years. Going through this vast literature a striking consensus emerges: success or failure of European farming in southern Africa was to a large extent depending on their access and control over labour. These propositions have so far never
Popular Abstract in Swedish Arbetet i denna avhandling presenteras i 6 olika delarbeten (artiklar I-VI). Artiklarna I-III behandlar två olika enzymer som bryter ner cyklodextriner, vilka är ringformade molekyler med samma beståndsdelar som i stärkelse (dvs sammanlänkade glukosmolekyler). Dessa s.k. cyklodextrinaser kommer ursprungligen från två bakterier som har isolerats i varma källor på Island.Two putative cyclodextrinases (CDases) were amplified from two moderate thermophiles isolated in Iceland: Anoxybacillus flavithermus and Laceyella sacchari. They were cloned, expressed and characterized. The expression of the former was optimized in E. coli by using a solubility-enhancing tag, NusA, and tuning of inducer concentration in the expression strain Tuner(DE3). The CDases were optimally
Analysis of the debates in the Swedish press concerning the controversies around the open-air art exhibition "Sculptura-97" in Falkenberg.
Statsvetenskaplig forskning visar att demokratiska dygder, som delaktighet, kritiskt tänkande och solidaritet värderas högt av svenska medborgar. Medborgarna anser att de själva kommer ganska nära sitt ideal när det gäller att bete sig i enlighet med dygderna. Man tycker alltså att man själv ”lever som man lär”. Däremot anser de inte att andra människor lever upp till de demokratiska idealen lika
Kritisk diskussion kring det samtida svenska och skandinaviska filmproduktionslandskapet.
The overall aim of this work is to study and interpret how social relations were expressed, shaped, and changed in the Late Middle Neolithic. The empirical foundation is a study of settlement in the Malmö area, south-west Skåne, Sweden. Other parts of southernmost Sweden (and eastern Denmark) are also concerned. Sites are discussed and given an overall interpretation as regards chronological and c
