Search for dissertations about: "geometry optimization"

Showing result 1 - 5 of 164 swedish dissertations containing the words geometry optimization.

  1. 1. Cost Optimization of Aircraft Structures

    Author : Markus Kaufmann; Dan Zenkert; Malin Åkermo; Per Wennhage; Erik Lund; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; aircraft structures; optimization; cost estimation; manufacturing cost; direct operating cost; multiobjective optimization; multidisciplinary optimization; composites; airframe design; TECHNOLOGY Engineering mechanics Vehicle engineering; TEKNIKVETENSKAP Teknisk mekanik Farkostteknik;

    Abstract : Composite structures can lower the weight of an airliner significantly. Due to the higher process complexity and the high material cost, however, the low weight often comes with a significant increase in production cost. The application of cost-effective design strategies is one mean to meet this challenge. READ MORE

  2. 2. Digital Geometry, Combinatorics, and Discrete Optimization

    University dissertation from Stockholm : Department of Mathematics, Stockholm University

    Author : Shiva Samieinia; Christer Kiselman; Rikard Bøgvad; Rémy Malgouyres; [2010]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Digital geometry; Khalimsky topology; Khalimsky plane; Khalimsky-continuous function; digital straight line segments; discrete optimization; discrete convexity; integral convexity; lateral convexity; marginal function; MATHEMATICS; MATEMATIK; matematik; Mathematics;

    Abstract : This thesis consists of two parts: digital geometry and discrete optimization.In the first part we study the structure of digital straight line segments. We also study digital curves from a combinatorial point of view. READ MORE

  3. 3. Optimization of track geometry maintenance a study of track geometry degradation to specify optimal inspection intervals

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Iman Arasteh khouy; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Drift och underhållsteknik; Operation and Maintenance;

    Abstract : Railway infrastructure is a complex system which comprises different subsystems. Long useful life span is one of the important aspects of this prime mode of transport. The useful life length of its assets is highly dependent on the maintenance and renewal strategy used during its life cycle. READ MORE

  4. 4. Toward Robust Optimization of Adaptive Radiation Therapy

    University dissertation from Stockholm, Sweden : KTH Royal Institute of Technology

    Author : Michelle Böck; Anders Forsgren; Minsun Kim; [2019]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; optimization; adaptive radiation therapy; radiation therapy treatment planning; uncertainty; robust optimization; stochastic programming; Tillämpad matematik och beräkningsmatematik; Applied and Computational Mathematics;

    Abstract : Adaptive radiation therapy is an evolving cancer treatment approach which relies on adapting the treatment plan in response to patient-specific interfractional geometric variations occurring during the fractionated treatment. If those variations are not addressed through adaptive replanning, the resulting treatment quality may be compromised. READ MORE

  5. 5. Geometry Based Design Automation Applied to Aircraft Modelling and Optimization

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Kristian Amadori; Petter Krus; Johan Ölvander; Christopher Jouannet; Bento Silva de Mattos; [2012]

    Abstract : Product development processes are continuously challenged by demands for increased efficiency. As engineering products become more and more complex, efficient tools and methods for integrated and automated design are needed throughout the development process. READ MORE