Search for dissertations about: "structure equation model"

Showing result 11 - 15 of 160 swedish dissertations containing the words structure equation model.

  2. 11. Microstructure model for Ti-6Al-4V used in simulation of additive manufacturing

    Author : Corinne Charles Murgau; Lars-Erik Lindgren; Niklas Järvstråt; Robert Pederson; Sören Sjöström; Högskolan Väst; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Titanium alloy; Ti-6Al-4V; Welding; Metal deposition; Additive manufacturing; Wire feed; Finite Element Method; Microstructure model; Johnson-Mehl-Avrami- Kolmogorov; Thermally driven; Production Technology; Produktionsteknik; Manufacturing and materials engineering; Produktions- och materialteknik; Material Mechanics;

    Abstract : This thesis is devoted to microstructure modelling of Ti-6Al-4V. The microstructure and the mechanical properties of titanium alloys are highly dependent on the temperature history experienced by the material. The developed microstructure model accounts for thermaldriving forces and is applicable for general temperature histories. READ MORE

  4. 12. The Uncertain Dichotomous Choice Model - Some Results

    Author : Antonio Maranon; Statistiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; hierarchy; chairman decisive rule; majority function; uncertain dichotomous choice model; collective decisional skill; Statistics; operations research; programming; actuarial mathematics; Statistik; operationsanalys; programmering; aktuariematematik;

    Abstract : A probabilistic framework used in studying collective decision making is the uncertain dichotomous choice model. The model is essentially characterized by two components: the organizational structure and the voting process. READ MORE

  5. 13. Cognitive abilities - aspects of structure, process and measurement

    Author : Berit Carlstedt; Göteborgs universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Cognitive abilities; factor models of intelligence; Enlistment battery; hierarchical models; item sequencing; construct validity; differentiation hypothesis; test evaluation; structural equation modeling;

    Abstract : The overall purpose of the thesis is to describe the development of the Swedish system of measuring cognitive abilities applied at enlistment of conscripts. The Enlistment Battery has been used for more than fifty years to classify 18-year old men into military positions for their compulsory service. READ MORE

  6. 14. Adaptive Finite Element Methods for the Reynolds Thin Film Model with Cavitation

    Author : Bertil Nilsson; Sweden Gothenburg Chalmers University of Technology Department of Applied Mechanics; []
    Keywords : tribology; Reynolds equation; cavitation; FEM; adaptivity; variational inequality; penalty formulation; error estimation; residual; duality;

    Abstract : The main purpose of this thesis is to use modern goal-oriented adaptive finite element techniques in order to improve the numerical simulation of tribology. Two novel adaptive finite element methods for the Reynolds thin film model including cavitation are presented and their different strategies are compared. READ MORE

  7. 15. Nonlinear Creep Model of Paper and Corrugated Board Materials

    Author : Poorvi Patel; Teknisk logistik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Technological sciences; Finite element modeling; Creep-recovery tests; Schapery creep equation; Localbuckling; Orthotropic materials; Teknik;

    Abstract : Models of the nonlinear creep behavior of paper, and of the global buckling , local buckling and creep buckling of corrugated board have been developed. The studies of creep and buckling were limited to climate conditions with constant relative humidity. First the short-term elastic buckling of corrugated board panels was studied. READ MORE