Search for dissertations about: "free volume"

Showing result 1 - 5 of 1320 swedish dissertations containing the words free volume.

  1. 1. Macroscopic Volume and Free Volume of Polymer Blends and Pressure-densified Polymers

    University dissertation from Chalmers University of Technology

    Author : Marcus Schmidt; Chalmers tekniska högskola.; Chalmers University of Technology.; [2000]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Kemi; Chemistry; PVT; pressure dilatometry; bulk modulus; thermal expansivity; compressibility; positron annihilation; positronium; polymers; pressure-densified polymers; polymer blends; copolymers; Tait equation of state; free-volume theories; free volume; cavity size; freezing fractions; free-volume distributions; Lorentz-Lorenz equation; refractive index; dynamic-mechanical analysis; loss tangent; phase separation; entropy of melting; Avrami equation;

    Abstract : The macroscopic volume V as a function of pressure P and temperature T is obtained from PVT measurements. PVT data is sensitive to the state of polymers and changes therein. Moreover, PVT data gives access to the free-volume fraction. READ MORE

  2. 2. Analysis of Human Brain MRI Contributions to Regional Volume Studies

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Richard Nordenskjöld; Uppsala universitet.; [2014]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MRI; Brain; Volume; Hemisphere; Intracranial volume; Image analysis; Datoriserad bildanalys; Computerized Image Analysis;

    Abstract : Many disorders are associated with regional brain volumes. The analysis of these volumes from MR images often requires sequential processing steps such as localization and delineation. READ MORE

  3. 3. Efficient Medical Volume Visualization An Approach Based on Domain Knowledge

    University dissertation from Institutionen för teknik och naturvetenskap

    Author : Claes Lundström; Linköpings universitet.; Linköpings universitet.; [2007]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Scientific Visualization; Medical Imaging; Computer Graphics; Volume Rendering; Transfer Function; Level-of-detail; Fuzzy Classification; Uncertainty Visualization; Virtual Autopsies; TECHNOLOGY Other technology Medical engineering; TEKNIKVETENSKAP Övriga teknikvetenskaper Medicinsk teknik;

    Abstract : Direct Volume Rendering (DVR) is a visualization technique that has proved to be a very powerful tool in many scientific visualization applications. Diagnostic medical imaging is one domain where DVR could provide clear benefits in terms of unprecedented possibilities for analysis of complex cases and highly efficient work flow for certain routine examinations. READ MORE

  4. 4. Theoretical modeling of molar volume and thermal expansion

    University dissertation from Institutionen för teknik och naturvetenskap

    Author : Xiao-Gang Lu; KTH.; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; first-principles calculations; ab initio; Calphad; Debye-Grüneisen model; thermodynamic properties; elastic modulus; volume; thermal expansivity; pressure; Thermo-Calc; VASP; element; carbide; nitride; Materialvetenskap; TECHNOLOGY Materials science; TEKNIKVETENSKAP Teknisk materialvetenskap;

    Abstract : Combination of the Calphad method and theoretical calculations provides new possibilities for the study of materials science. This work is a part of the efforts within the CCT project (Centre of Computational Thermodynamics) to combine these methods to facilitate modeling and to extend the thermodynamic databases with critically assessed volume data. READ MORE

  5. 5. Algorithms in data mining using matrix and tensor methods

    University dissertation from Matematiska institutionen

    Author : Berkant Savas; Linköpings universitet.; Linköpings universitet.; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Volume; Minimization criterion; Determinant; Rank deficient matrix; Reduced rank regression; System identification; Rank reduction; Volume minimization; General algorithm; Handwritten digit classification; Tensors; Higher order singular value decomposition; Tensor approximation; Least squares; Tucker model; Multilinear algebra; Notation; Contraction; Tensor matricization; Newton s method; Grassmann manifolds; Product manifolds; Quasi-Newton algorithms; BFGS and L-BFGS; Symmetric tensor approximation; Local intrinsic coordinates; Global embedded coordinates; ; MATHEMATICS Applied mathematics Numerical analysis; MATEMATIK Tillämpad matematik Numerisk analys;

    Abstract : In many fields of science, engineering, and economics large amounts of data are stored and there is a need to analyze these data in order to extract information for various purposes. Data mining is a general concept involving different tools for performing this kind of analysis. READ MORE