Sökning: "local minima"

Visar resultat 1 - 5 av 25 uppsatser innehållade orden local minima.

  1. 1. LEO Satellite Connectivity for flying vehicles

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Jinxuan Chen; [2023]
    Nyckelord :LEO satellite network; satellite connectivity strategy; Nash-SAC; flying vehicles; LEO:s satellitnät; Strategi för satellitanslutning; Nash-SAC; flygande fordon;

    Sammanfattning : Compared with the terrestrial network (TN), which can only support limited covered areas, satellite communication (SC) can provide global coverage and high survivability in case of an emergency like an earthquake. Especially low-earth orbit (LEO) satellites, as a promising technology, which is integral to achieving the goal of global seamless coverage and reliable communication, catering to 6G’s communication requirements. LÄS MER

  3. 2. Aromatic Ring Flips and Local Volume Fluctuations in BPTI

    Master-uppsats, Lunds universitet/Biofysikalisk kemi

    Författare :Simon Enbom; [2022]
    Nyckelord :Biophysical Chemistry; Molecular Dynamics; Protein Dynamics; Activation Volume; Aromatic Ring Flips; BPTI; Biology and Life Sciences; Chemistry; Technology and Engineering;

    Sammanfattning : Aromatic ring flips are a classic example of a dynamic process in proteins. Discovered decades ago, methodological limitations hindered progress at the time. Ring flips have gained new interest and experimentalists can measure the flip rate and thermodynamic quantities associated with it. LÄS MER

  4. 3. Quantum chemical studies of the reactivity of gold nanoparticles towards molecular radicals

    Master-uppsats, KTH/Kemi

    Författare :Sofia Larsson; [2022]
    Nyckelord :gold nanoparticles; surface electrostatic potential; average local ionization energy; electron attachment energy; free molecular radicals; guldnanopartiklar; elektrostatisk ytpotential; genomsnittlig lokal joniseringsenergi; fria molekylära radikaler;

    Sammanfattning : Kvantkemiska studier av reaktiviteten hos guldnanopartiklar Au3-Au11 och Au13 mot O- centrerade molekylradikaler OH , OOH , OCH3   och H2O undersöks. Olika molekylära ytegenskaper tas med i beräkningen, elektrostatiska ytpotentialen, den genomsnittliga lokala joniseringsenergin, electron attachment energy och spinndensiteten (VS(r), IS(r), TS(r), ES(r) och S(r)). LÄS MER

  5. 4. Parameter estimation in a cardiovascular computational model using numerical optimization : Patient simulation, searching for a digital twin

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Giulia Tuccio; [2022]
    Nyckelord :Parameter estimation; Enhanced Scatter Search; Particle Swarm; Hooke and Jeeves; Cardiovascular Models; Parameteruppskattning; förbättrad spridningssökning; Particle Swarm; Hooke och Jeeves; kardiovaskulära modeller;

    Sammanfattning : Developing models of the cardiovascular system that simulates the dynamic behavior of a virtual patient’s condition is fundamental in the medical domain for predictive outcome and hypothesis generation. These models are usually described through Ordinary Differential Equation (ODE). LÄS MER

  7. 5. Avoiding local minima with Genetic programming of Behavior Trees

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Zhanpeng Xie; [2022]
    Nyckelord :Genetic Programming; Behavior Trees; Optimization; Autonomous Agents; Simulation; Genetiskprogrammering; beteendeträd; optimering; autonomaagenter; simulering;

    Sammanfattning : Behavior Trees (BTs) are a reactive policy representation that has gained popularity in recent years, especially in the robotics domain. Among the learning methods for BTs, Genetic Programming (GP) is an effective method for learning a good BT. One drawback of GP is that it is likely to get stuck in local minima. LÄS MER