Search for dissertations about: "defect evolution"

Showing result 1 - 5 of 42 swedish dissertations containing the words defect evolution.

2. 1. Experimental Evolution : and Fitness Effects of Mutations

   Author : Anna Knöppel; Dan I Andersson; Stanley Maloy; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Experimental evolution; Fitness effects; mutations; S20; fis; ribosome; horizontal gene transfer; adaptation; synonymous mutations; Mikrobiologi; Microbiology;

   Abstract : Bacteria have small, streamlined genomes and evolve rapidly. Their large population sizes allow selection to be the main driver of evolution. With advances in sequencing technologies and precise methods for genetic engineering, many bacteria are excellent models for studying elementary questions in evolutionary biology. READ MORE

4. 2. Evolution of artificial defects during shape rolling

   Author : Mirjana Filipovic; Stefan Jonsson; Per-Olov Perä; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; shape rolling; wire rod rolling; artificial defects; defect evolution; surface cracks; porosity; FEM; high speed steel; stainless steel; Other materials science; Övrig teknisk materialvetenskap; Initiering och utveckling av defekter under spårvalsning;

   Abstract : Very often defects are present in rolled products. For wire rods, defects are very deleterious since the wire rods are generally used directly in various applications. For this reason, the market nowadays requires wire rods to be completely defect-free. Any wire with defects must be rejected as scrap which is very costly for the production mill. READ MORE

5. 3. Evolution and the Backward Induction Problem in the Repeated Prisoners’ Dilemma

   Author : Vilhelm Verendel; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Evolution; Out of equilibrium; Learning; Game theory; Backward induction; Repeated Prisoners’ Dilemma;

   Abstract : The finitely Repeated Prisoners’ Dilemma (RPD) is a model of a social dilemma where cooperation is particularly hard to come by. The standard way to solve the game is usingbackward induction, which by a particular logic gradually eliminates all cooperation from the end of a repeated game. READ MORE

6. 4. Curbing Dependencies in Software Evolution of Object-Oriented Systems

   Author : Mats Skoglund; Louise Yngström; Per Runeson; Lionel C. Briand; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Software Evolution; Object-orientation; Software Quality; Software engineering; Programvaruteknik;

   Abstract : Relationships between classes and objects in object-oriented software are necessary in order for the parts of the systems to provide dynamic behavior. These inherent relationships also create dependencies which can give rise to problems for software evolution of object-oriented software systems. READ MORE

7. 5. Modeling defect structure evolution in spent nuclear fuel container materials

   Author : Arash Hosseinzadeh Delandar; Pavel Korzhavyi; Rolf Sandström; Konstantin Khromov; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cast iron insert; First principles calculations; Point defects; Effective interaction energy; Late blooming phase; Dislocation dynamics; High strain rate deformation; Single-crystal copper; Copper canister; Creep; Glide; Teknisk materialvetenskap; Materials Science and Engineering;

   Abstract : Materials intended for disposal of spent nuclear fuel require a particular combination of physical and chemical properties. The driving forces and mechanisms underlying the material’s behavior must be scientifically understood in order to enable modeling at the relevant time- and length-scales. READ MORE