Sökning: "large-scale structure"

Visar resultat 1 - 5 av 391 avhandlingar innehållade orden large-scale structure.

  1. 1. Accelerating Convergence of Large-scale Optimization Algorithms

    Författare :Euhanna Ghadimi; Mikael Johansson; Angelia Nedich; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Convex optimization; Large-scale systems; First-order methods; Convergence analysis; ADMM; Optimization algorithms; Electrical Engineering; Elektro- och systemteknik; Matematik; Mathematics;

    Sammanfattning : Several recent engineering applications in multi-agent systems, communication networks, and machine learning deal with decision problems that can be formulated as optimization problems. For many of these problems, new constraints limit the usefulness of traditional optimization algorithms. LÄS MER

  3. 2. Distributed Stochastic Programming with Applications to Large-Scale Hydropower Operations

    Författare :Martin Biel; Mikael Johansson; Lennart Söder; David Woodruff; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; stochastic programming; distributed; algorithms; large-scale; optimization; hydropower; software; julia language; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Stochastic programming is a subfield of mathematical programming concerned with optimization problems subjected to uncertainty. Many engineering problems with random elements can be accurately modeled as a stochastic program. In particular, decision problems associated with hydropower operations motivate the application of stochastic programming. LÄS MER

  4. 3. On H-infinity Control and Large-Scale Systems

    Författare :Carolina Bergeling; Institutionen för reglerteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; H-infinity Control; Decentralized Control; Large-Scale Systems; Infinite-Dimensional Systems;

    Sammanfattning : In this thesis, a class of linear time-invariant systems is identified for which a particular type of H-infinity optimal control problem can be solved explicitly. It follows that the synthesized controller can be given on a simple explicit form. LÄS MER

  5. 4. Large-scale Runoff Generation and Routing : Efficient Parameterisation using High-resolution Topography and Hydrography

    Författare :Lebing Gong; Sven Halldin; C.-Y. Xu; Allan Rodhe; Thorsten Wagener; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Parameterisation; runoff generation; routing; WASMOD-M; hydrography; data uncertainty; topographic index; scale; river network; response function; HydroSHEDS; HYDRO1k; Dongjiang basin; Parametrisering; avrinningsbildning; flödessvarstid; WASMOD-M; hydrografi; topografiskt index; dataosäkerhet; skala; flödesnät; svarstidssfunktion; HYDRO1k; HydroSHEDS; Dongjiang; Hydrology; Hydrologi; Hydrology; Hydrologi;

    Sammanfattning : Water has always had a controlling influence on the earth’s evolution. Understanding and modelling the large-scale hydrological cycle is important for climate prediction and water-resources studies. LÄS MER

  7. 5. Gradient Methods for Large-Scale and Distributed Linear Quadratic Control

    Författare :Karl Mårtensson; Institutionen för reglerteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Large-Scale Control; Distributed Control; Linear Quadratic Gaussian Control; Gradient method; Controller Synthesis;

    Sammanfattning : This thesis considers methods for synthesis of linear quadratic controllers for large-scale, interconnected systems. Conventional methods that solve the linear quadratic control problem are only applicable to systems with moderate size, due to the rapid increase in both computational time and memory requirements as the system size increases. LÄS MER