Search for dissertations about: "stochastic transportation problem"

Showing result 1 - 5 of 11 swedish dissertations containing the words stochastic transportation problem.

  2. 1. Feasible Direction Methods for Constrained Nonlinear Optimization : Suggestions for Improvements

    Author : Maria Mitradjieva-Daneva; Maud Göthe-Lundgren; Torbjörn Larsson; Clas Rydergren; Anders Forsgren; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; constrained nonlinear optimization; feasible direction methods; conjugate directions; traffic equilibrium problem; sequential linear programming algorithm; stochastic transportation problem; Optimization; systems theory; Optimeringslära; systemteori;

    Abstract : This thesis concerns the development of novel feasible direction type algorithms for constrained nonlinear optimization. The new algorithms are based upon enhancements of the search direction determination and the line search steps. READ MORE

  4. 2. Transition Towards Fixed-Line Autonomous Bus Transportation Systems

    Author : Jonas Hatzenbühler; Erik Jenelius; Oded Cats; Clas Rydergren; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Autonomous Buses; Public Transportation; Network Design; Resource Allocation; Simulation-based multi-objective Optimization; Transportvetenskap; Transport Science;

    Abstract : In the last years the steady development of autonomous driving technology has enabled the deployment of more mature autonomous vehicles. These vehicles have been applied in several pilot projects worldwide, most commonly in the form of small buses. READ MORE

  5. 3. Coordinated control of Multi-Stage Inventory System

    Author : Johan Marklund; Produktionsekonomi; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Inventory systems; multi-echelon; stochastic; decentralization; centralized control; distribution system; divergent system; echelon-stock; installation-stock.;

    Abstract : This thesis is based on three scientific papers dealing with different models for coordinated control of multi-stage inventory systems. The ability to control multi-echelon inventory systems, is paramount for reducing tied up capital and inventory costs in large distribution systems. READ MORE

  6. 4. Modeling Lateral Transshipments and Perishable Items in Inventory Systems

    Author : Fredrik Olsson; Produktionsekonomi; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Technological sciences; Teknik; Dynamic programming ; Inventory ; Perishable items ; Lateral transshipments ; Pooling ; Batch ordering ; Optimal policies ; Stochastic ;

    Abstract : This thesis deals with two main areas in the field of stochastic inventory theory; ateral transshipments and perishable items. In the first part of this thesis we give an introduction to the field of inventory theory, and discuss some previous literature connected to the research presented in this thesis. READ MORE

  7. 5. Reinforcement in Biology : Stochastic models of group formation and network construction

    Author : Qi Ma; David Sumpter; Edward Codling; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; reinforcement in biology; merge and split model; preferential attachment; reinforced random walk; network construction; shortest path problem; transport networks; ant algorithm; slime mould; physarum polycephalum; speed-accuracy tradeoff.; Mathematics with specialization in Applied Mathematics; Matematik med inriktning mot tillämpad matematik;

    Abstract : Empirical studies show that similar patterns emerge from a large number of different biological systems. For example, the group size distributions of several fish species and house sparrows all follow power law distributions with an exponential truncation. READ MORE