Sökning: "accident ratio"

Visar resultat 1 - 5 av 13 uppsatser innehållade orden accident ratio.

  1. 1. Probabilistic Added Wave Resistance Predictions for Design of RoPax Ferries

    Master-uppsats, KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Författare :Jonathan Viinikka; [2023]
    Nyckelord :Added wave resistance in head waves; Roll-on Roll-off Passenger ferry; Probabilistic wave environment; Semi-empirical method; Adderat vågmotstånd i motsjö; Roll-on Roll-off Passagerar Fartyg; Probabilistiska vågförhållanden; Semiempiriska beräkningsmethoder;

    Sammanfattning : This thesis investigates reasons for significant uncertainties in added wave resistance predictionsand how wave conditions can potentially affect the design of RoPax ferries. The objectiveis to find a suitable prediction method of added wave resistance for the RoPax ferry designapplication. LÄS MER

  3. 2. A Numerical Study of Melt Pool Heat Transfer in the IVR of a PWR

    Master-uppsats, KTH/Fysik

    Författare :Yuer Zhao; [2021]
    Nyckelord :In-vessel melt retention; corium pool; Zr oxidation ratio; melt pool convection; CFD; SST k-ω turbulence model; Smältretention i kärlet; koriumpöl; Zr-oxidationsförhållande; konvektion i en smältpöl; CFD; SST k-ω turbulensmodell;

    Sammanfattning : This thesis aims to provide the thermal condition of melt pool convection by CFD simulation, which is important to the assessment of the invessel melt retention (IVR) strategy widely adopted in Generation III pressurized water reactors (PWRs). As a severe accident mitigation measure, the IVR strategy is realized through external cooling of the lower head of a reactor pressure vessel (RPV). LÄS MER

  4. 3. Getting a grip on the effect of preventive public health interventions – A study of the economic benefits of subsidized ice cleats

    Master-uppsats, Göteborgs universitet/Graduate School

    Författare :Joel Canderhed; Victor Abdalla; [2020-07-10]
    Nyckelord :QALY; ICER; ice grip; ; ice cleat; ; STRADA; STRADA; traffic; injury; quality of life; DID; Difference-in-Difference; subsidy; Intent-to-Treat; weather; gender; negative binomial regression;

    Sammanfattning : Purpose: This thesis studies an ice cleat subsidy programme for seniors introduced in 2018 by Region Jönköping in Sweden. The aim of the study is to examine whether the subsidy was a cost-effective way of decreasing the number of Emergency room (ER) visits caused by snow and ice related fall injuries for seniors. LÄS MER

  5. 4. The Effect of Advanced Automatic Collision Notification (AACN) on Road Fatality Reduction in Sweden

    H-uppsats,

    Författare :Jonathan Jonsson; [2019-07-03]
    Nyckelord :Transport; Hållbar utveckling; Annan teknik; Transport; Sustainable Development; Other Engineering and Technologies;

    Sammanfattning : Road traffic accidents account for approximately 1.3 million fatalities each year and are the eighth most common cause of death globally and the leading cause of death for people between the age of 15 and 29. The outcome of a collision is affected by actions taken before, during, and after the collision. LÄS MER

  7. 5. Analysis of Renewable Energy Installationwith Modelling of Electricity Supply System in Japan

    Master-uppsats, KTH/Energisystem

    Författare :Yuki Kobayashi; [2017]
    Nyckelord :;

    Sammanfattning : The Great East Japan Earthquake and tremendous tsunami caused the accident of the Fukushima Daiichi Nuclear Power Plant in 2011. In response to this accident, the Japanese government stopped almost all nuclear power plants and shifted to an electricity supply system with slight nuclear power genration and mainly with renewable energies. LÄS MER