Search for dissertations about: "phase boundaries"

Showing result 1 - 5 of 185 swedish dissertations containing the words phase boundaries.

  2. 1. Phase-field modeling of diffusion controlled phase transformations

    Author : Irina Loginova; KTH; []
    Keywords : phase-field; dendritic growth; grain boundary; Widmanstaetten plate; solidification;

    Abstract : Diffusion controlled phase transformations are studied bymeans of the phase-field method. Morphological evolution ofdendrites, grains and Widmanst\"atten plates is modeled andsimulated.Growth of dendrites into highly supersaturated liquids ismodeled for binary alloy solidification. READ MORE

  4. 2. Frequency Noise in Coherent Optical Systems: Impact and Mitigation Methods

    Author : Aditya Kakkar; Richard Schatz; Sergei Popov; Gunnar Jacobsen; Xiaodan Pang; Oskars Ozolins; Magnus Karlsson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Equalization enhanced phase noise; frequency noise; coherent optical communications; carrier phase recovery; carrier phase estimation; circular quadrature amplitude modulation; EEPN; CmQAM; blind phase search; phase noise;

    Abstract : The increase in capacity demand along with the advancement in digital signal processing (DSP) have recently revived the interest in coherent optical communications and led to its commercialization. However, design and development of robust DSP algorithms for example for carrier phase recovery (CPR) becomes complex as we opt for high order modulation formats such as 16QAM and beyond. READ MORE

  5. 3. Solvable Topological Boundaries

    Author : Flore Kiki Kunst; Emil Bergholtz; Henning Schomerus; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; teoretisk fysik; Theoretical Physics;

    Abstract : The hallmark of topological phases of matter is the presence of robust boundary states. In this dissertation, a formalism is developed with which analytical solutions for these states can be straightforwardly obtained by making use of destructive interference, which is naturally present in a large family of lattice models. READ MORE

  6. 4. Organizing boundaries in early phases of product development : The case of an interorganizational vehicle platform project setting

    Author : Thommie Burström; Nils Wåhlin; Jessica Eriksson; Johan Packendorff; Umeå universitet; []
    Keywords : organizing; projects; boundaries; boundary-actors; activities; objects; tensions;

    Abstract : This dissertation concerns the development of a new interorganizational vehicle platform in the truck industry. The studied project setting was large, and can be referred to as a mega project. READ MORE

  7. 5. Atomic-scale modelling of interfaces in cemented carbides: wetting and strength

    Author : Martin Gren; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; adhesion; density functional theory; hardmetals; cemented carbides; WC-Co; surfaces; interfaces; grain boundaries; wetting; phase boundaries;

    Abstract : Cemented carbides are composite materials of great technological and industrial importance. They have a unique combination of hardness and toughness and are therefore used widely as tool materials in applications where both high hardness and toughness are demanded. These applications include among others: mining, turning, cutting and milling. READ MORE