Essays about: "Ballast"

Showing result 11 - 15 of 62 essays containing the word Ballast.

  1. 11. A Machine Learning-Based Approach for Fault Detection of Railway Track and its Components

    University essay from Luleå tekniska universitet/Drift, underhåll och akustik

    Author : Johnny Asber; [2020]
    Keywords : Condition Based Maintenance in Railway; Machine Learning; Deep Learning; ResNet-50;

    Abstract : The hard equation of railway safety versus the high commercial profits can only be achieved through the use of new inspection methods supported by modern technologies. The track and its components can have different types of troubles, such as rail surface defects, broken sleepers, missing fasteners, and irregular ballast levels. READ MORE

  3. 12. Invasive round goby, Neogobius melanostomus - suitable prey for native cod, Gadus morhua?

    University essay from SLU/Dept. Of Aquatic Resources

    Author : Andreas Ljung; [2020]
    Keywords : Round goby; invasive species; cod; predator-prey inter-action;

    Abstract : Invasive species is a worldwide issue that is considered to be the one of the main reasons to losses of biodiversity. The round goby, Neogobius melanostomus, is an invasive species in the Baltic Sea that originates from the Black- and Caspian Sea. READ MORE

  4. 13. European perch (Perca fluviatilis) as a possible predator of the invasive round goby (Neogobius melanostomus) in the Baltic Sea

    University essay from SLU/Dept. Of Aquatic Resources

    Author : Mari-Helen Westlund; [2020]
    Keywords : Baltic Sea; invasive species; Round goby; Perch; prey-predator interaction;

    Abstract : Invasive species is a global issue with a strong link to reduced biodiversity and large economic costs. The invasive fish species round goby (Neogobius melanostomus) is one of the species that are spreading in the Baltic Sea area most rapidly, and risk causing major issues. READ MORE

  5. 14. Simulation of railway infrastructure with asphalt layer for tracks in Sweden

    University essay from KTH/Byggvetenskap

    Author : Aleksandra Kuksova; [2020]
    Keywords : Ballasted track; bituminous mixture; bituminous sub-ballast; temperature; railway track modelling; finite element analysis. v;

    Abstract : With the introduction of high-speed trains over the past few years, as well as withan increase in traffic loads and volumes, the attractiveness and competitiveness ofthe railway transport system have increased. This leads to the need to develop newcost-effective ways in railway construction, providing an increase in the life cycle ofthe railway track and reducing the need for maintenance. READ MORE

  6. 15. A Machine Learning Approach to Predictively Determine Filter Clogging in a Ballast Water Treatment System

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Kristoffer Sliwinski; [2019]
    Keywords : ;

    Abstract : Since the introduction of the Ballast Water Management Convention, ballast water treatment systems are required to be used on ships for processing the ballast water to avoid spreading bacteria or other microbes which can destroy foreign ecosystems. One way of pre-processing the water for treatment is by straining the water through a filtration unit. READ MORE