Sökning: "ANT"

Visar resultat 11 - 15 av 126 avhandlingar innehållade ordet ANT.

1. 11. Reinforcement in Biology : Stochastic models of group formation and network construction

   Författare :Qi Ma; David Sumpter; Edward Codling; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; reinforcement in biology; merge and split model; preferential attachment; reinforced random walk; network construction; shortest path problem; transport networks; ant algorithm; slime mould; physarum polycephalum; speed-accuracy tradeoff.; Mathematics with specialization in Applied Mathematics; Matematik med inriktning mot tillämpad matematik;

   Sammanfattning : Empirical studies show that similar patterns emerge from a large number of different biological systems. For example, the group size distributions of several fish species and house sparrows all follow power law distributions with an exponential truncation. LÄS MER

3. 12. Life, death ant the role of IGF-I in human multiple myeloma

   Författare :Patrik Georgii-Hemming; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Genetics; Multiple Myeloma; IGF-I; apoptosis; Fas; glucocorticoids; somatostatin; Genetik; Clinical genetics; Klinisk genetik; Pathology; patologi;

   Sammanfattning : Multiple myeloma (MM) is a clonal expansion of malignant cells with a plasmablast- plasma cell morphology in the bone marrow. It is a fatal disease with a median survival of 2-3 years after start of conventional therapy. LÄS MER

4. 13. Optimizing and Approximating Algorithms for the Single and Multiple Agent Precedence Constrained Generalized Traveling Salesman Problem

   Författare :Raad Salman; Göteborgs universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; PCGmTSP; GTSP; SOP; mTSP; branch and bound; asymmetric generalized multiple traveling salesman problem; VRP; PCGTSP; dynamic programming; sequential ordering problem; vehicle routing problem; ant colony optimization; metaheuristic local search heuristic; precedence constraints; edge exchange; ant colony optimization;

   Sammanfattning : In the planning phases of automated manufacturing, generating efficient programs for robot stations is a crucial problem which needs to be solved. One aspect of the programming is the optimization of task sequences, such as series of welds or measuring points, so that the cycle time is minimized. LÄS MER

5. 14. Identification of principal chemical subsets of biofuel combustion : Ants walking in renewable fire

   Författare :Christoffer Pichler; Förbränningsfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Reduced kinetic models; Biofuel; n-Heptane; Alcohols; Ant-Colony Reduction; Combustion chemistry; Fysicumarkivet A:2020:Pichler;

   Sammanfattning : The work in this thesis was carried out to highlight important chemical pathways in skeletal mechanisms for the three smallest alcohol fuels (methanol, ethanol and npropanol), two representative fuel alkanes n-heptane and n-decane, and finally the biodiesel surrogates, methyl-decanoate, methyl-5-decenoate, and methyl-9-decenoate. This aim was set up to further the efforts of creating Computational Fluid Dynamics (CFD) suitable mechanisms, which in turn can be used by the industry to improve, for example, engines or gas turbines, or by academia to further understand turbulent combustion. LÄS MER

7. 15. Controlling the mobility of organic carbon (OC) ant its impact on metal transport from incineration residues

   Författare :Malin Svensson; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Avfallsteknik; Waste Science and Technology;

   Sammanfattning : Incineration residues contain both inorganic and organic material. The organic material may affect the mobility of pollutants in e.g. landfills or geotechnical constructions. LÄS MER