Sökning: "stretched"

Visar resultat 1 - 5 av 100 avhandlingar innehållade ordet stretched.

1. 1. Stretched Membranes

   Författare :Jonas Björnsson; Stephen Hwang; Jürgen Fuchs; Anders Westerberg; Ulf Lindström; Karlstads universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik; Physics; Fysik;

   Sammanfattning : This thesis deals with relativistic membranes and, in particular, a limit called stretched membranes. The thesis also considers the relation of membranes to the conjectured M-theory and string theory. The thesis is divided into two parts. One introductory part where I introduce areas which are of relevance for the second part. LÄS MER

3. 2. Nuclear Magnetic Relaxation Dispersion and Pulsed-Gradient Spin Echo Studies of Biomolecular Solutions and Amphiphilic Liquid Crystals

   Författare :Haukur Jóhannesson; Biofysikalisk kemi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; stretched dispersion; DNA hydration; solvent dynamics; NMRD; Random flight simulation; PGSE; Diffusion; Nematic phase; NMR; Amphiphilic liquid crystals; Physical chemistry; Fysikalisk kemi;

   Sammanfattning : Biomolecular solutions and amphiphilic liquid crystals are studied by Nuclear Magnetic Resonance Dispersion (NMRD) and Pulsed-Gradient Spin Echo (PGSE) respectively. A random-flight simulation is performed to obtain the obstructing factors for self-diffusion of small molecules in macrofluids. LÄS MER

4. 3. Finite Element Procedures for Fluid-structure Interaction

   Författare :Joakim Hermansson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nitsche s method; stabilized Crouzeix-Raviart; Winslow s method; Raviart-Thomas; space-time FE; stretched elements; FSI; FEM; weak coupling; mesh smoothing; acoustic FSI; ALE;

   Sammanfattning : This thesis concerns finite element (FE) methods for solving fluid-structure interaction (FSI) problems. Two types of fluid-structure interaction are considered. A finite element method for solving the interaction between a flowing incompressible fluid and a linear elastic structure is proposed. The flow is assumed to be laminar. LÄS MER

5. 4. En elev - en dator : kunskapsbildningens kvalitet och villkor i den datoriserade skolan

   Författare :Håkan Fleischer; Elsie Anderberg; Thomas Karlsohn; Lars Naeslund; Jönköping University; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Social Sciences; Educational Sciences; Pedagogy; Samhällsvetenskap; Utbildningsvetenskap; Pedagogik; One-to-one; knowledge formation; knowledge qualities; phenomenology; phenomenography; knowledge society; stretched knowledge; performative knowledge; En-till-en; kunskapsbildning; kunskapskvalitet; fenomenologi; fenomenografi; kunskapssamhälle; stretchad kunskap; performativ kunskap; Pedagogik; Pedagogics;

   Sammanfattning : Avhandlingen behandlar införande av varsin dator till elever och lärare, här kallat en-till-en. Syftet är att bidra med kunskap om hur en-till-en påverkar lärande. Särskilt fokus ligger på kunskapsproduktionens karaktär och kvalitet och på förhållanden i den svenska skolan. LÄS MER

7. 5. Analytical vortex solutions to Navier-Stokes equation

   Författare :Henrik Tryggeson; Mats Lyberg; Maarten Brons; Växjö universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; conical vortex; Navier-Stokes equation; analytical solution; 2-D vortices; turbulence; vortex ring; stretched vortex; coherent structures; Fluid mechanics; Strömningsmekanik;

   Sammanfattning : Fluid dynamics considers the physics of liquids and gases. This is a branch of classical physics and is totally based on Newton's laws of motion. Nevertheless, the equation of fluid motion, Navier-Stokes equation, becomes very complicated to solve even for very simple configurations. LÄS MER