Essays about: "Piecewise"

Showing result 6 - 10 of 53 essays containing the word Piecewise.

  1. 6. Modeling the Head Effect in Hydropower River Systems using MILP and BLP Approaches

    University essay from Linköpings universitet/Tillämpad matematik; Linköpings universitet/Tekniska fakulteten

    Author : Lina Larsson; Mikaela Lindberg; [2022]
    Keywords : Hydropower optimization; Hydropower scheduling; The head effect; Bilinear programming; Mixed-integer linear programming;

    Abstract : With a fast-growing electricity demand and a larger proportion of intermittent energy sources follows a greater need for flexible and balancing sources of electricity, such as hydropower. Planning of hydropower production is considered to be a difficult problem to solve due to several nonlinearities, combinatorial properties and the fact that it is a large scale system with spatial-temporal coupling. READ MORE

  3. 7. An Empirical Study on the Generation of Linear Regions in ReLU Networks : Exploring the Relationship Between Data Topology and Network Complexity in Discriminative Modeling

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Petter Eriksson; [2022]
    Keywords : Neural networks; Linear regions; Activation patterns; Piecewise linear activation functions; Data; Curvature; Neurala nätverk; Linjära regioner; Styckvis linjära aktiveringsfunktioner; Data; Krökning;

    Abstract : The far-reaching successes of deep neural networks in a wide variety of learning tasks have prompted research on how model properties account for high network performance. For a specific class of models whose activation functions are piecewise linear, one such property of interest is the number of linear regions that the network generates. READ MORE

  4. 8. Numerical simulation of a rising bubble

    University essay from KTH/Strömningsmekanik och Teknisk Akustik

    Author : Nan Huang; [2021]
    Keywords : Multiphase flows; numerical simulations; Strömningsmekanik; flerfas strömningar;

    Abstract : This thesis evaluates two variants of Volumeof fluid method, namely Piecewise Linear Interface Construction (PLIC) and Multidimensional Tangent of Hyperbola for Interface Capturing (MTHINC) used in two-fluid simulations for interface tracking.Simulations of a single rising bubble in different conditions are performed aimed to assess the accuracy of the methods, and to check their convergence with grid size. READ MORE

  5. 9. Modeling telemedicine customer arrivals

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Aron Strandberg; [2021]
    Keywords : ;

    Abstract : This project investigates whether customer arrivals to digital healthcare providers can be appropriately modeled by non-homogeneous Poisson processes (NHPPs). Data from a large Swedish telemedicine provider was examined, with the goal of confirming that the data exhibited the two required properties of Poisson processes: customer interarrival times being (i) exponentially distributed, and (ii) independently and identically distributed. READ MORE

  6. 10. Numerical simulations of the Dynamic Beam Equation in discontinuous media

    University essay from Uppsala universitet/Avdelningen för beräkningsvetenskap

    Author : Niklas Wik; David Niemelä; Valter Wagner Zethrin; [2020]
    Keywords : Dynamic beam equation; DBE; SAT; projection; SBP;

    Abstract : The study examines the Projection method and the simultaneousapproximation-term (SAT) method as boundary treatment for the dynamic beam equation using summation-by-parts (SBP) operators for handling the inner domain. The methods are examined for both the homogeneous constant coefficient case, and the inhomogeneous piecewise constant coefficient case with a coupled interface. READ MORE