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Visar resultat 21 - 25 av 2935 avhandlingar som matchar ovanstående sökkriterier.

1. 21. Some Aspects on Pulp Pre-treatment Prior to Viscose Preparation

   Författare :Linda Östberg; Ulf Germgård; Gunnar Henriksson; Karlstads universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical Engineering; Kemiteknik;

   Sammanfattning : Large amounts of carbon disulphide are consumed in the conventional production of viscose. Until a novel, eco-friendly, wood-based process for the production of cellulose textile fibres has been developed and implemented, it is important to try to find ways to improve the conventional viscose process, e.g. LÄS MER

3. 22. Land Mine Detection using Dual-Band Electro-Optical Sensing

   Författare :Magnus Lundberg; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; land mines; regularization; nuisance parameters; detection; infrared imaging; occlusion modeling; multi-spectral imaging; prior knowledge; Signalbehandling;

   Sammanfattning : This thesis addresses the detection of buried and partially occluded land mines using electro-optical sensing. According to the Red Cross approximately 10000 people are killed and another 30000 are injured each year in mine related accidents. LÄS MER

4. 23. Agency and Artefacts : A cognitive semiotic exploration of design

   Författare :Juan Mendoza-Collazos; Kognitiv semiotik; []
   Nyckelord :HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Agency; enhanced agency; agency hierarchy; derived agency; material agency; intentionality; prior intentions; intentions in action; pictorial representations; artefacts; tool-making; design theory; design semiotics; design research; phenomenology; cognitive semiotics; agentive semiotics; semiotic hierarchy; 4E cognition; bio-cultural evolution; philosophy of design; philosophy of technology;

   Sammanfattning : This thesis investigates the role of artefacts in relation to human agency and design within a cognitive semiotics framework. It deals with questions such as What is agency? What are artefacts and how does agency relate to them? What kind of intentions are involved in the activity of designing? What is human-specific with respect to agency and design? How can the origins and evolution of design be explained? Addressing these questions, the thesis proposes a layered model of agency for explaining the relations between different grades of agentive complexity. LÄS MER

5. 24. Stem Cell Plasticity Controlling Neuronal Differentiation Prior to Cell Transplantation

   Författare :Laurent Roybon; Institutionen för experimentell medicinsk vetenskap; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Differentiation; Stem cells; Immunology; serology; Immunologi; serologi; transplantation;

   Sammanfattning : Parkinson's disease (PD) is the second most common neurodegenerative disease and affects 2% of the population over 65 years of age. The disease is characterized by the progressive loss of dopaminergic neurons. Over time, symptoms increase and, in particular, lead to a dramatic slowness of movements. LÄS MER

7. 25. Optimal strategies and information in foraging theory

   Författare :Emma Sernland; Högskolan i Skövde; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Bayesian foraging; information use; public information; prior information; negative binomial distribution; group foraging; decision-making; information updating; leaving strategy; Ecology; Ekologi; NATURAL SCIENCES; NATURVETENSKAP; Other biology; Övrig biologi; Naturvetenskap; Natural sciences; information use; Bayesian foraging; public information; prior information; negative binomial distribution; group foraging; decision-making; information updating; leaving strategy; Ecology; Ekologi;

   Sammanfattning : In this thesis, I present both theoretical and empirical work where we have studied how humans and animals use information in situations where they need to continually update their information on the density of a resource. We have found that the amount of information, and the way the information is presented, are important factors for how well decisions are adapted to current circumstances. LÄS MER