Sökning: "David Perez"

Hittade 5 uppsatser innehållade orden David Perez.

  1. 1. CFD analysis of a glider aircraft : Using different RANS solvers and introducing improvements in the design

    Kandidat-uppsats, Linköpings universitet/Mekanisk värmeteori och strömningslära

    Författare :David Perez Sancha; [2019]
    Nyckelord :CFD; RANS; Standard Cirrus; glider; Fluent; SU2; OpenFOAM; SST; transition; winglet.;

    Sammanfattning : In this study, Computational Fluid Dynamics (CFD) simulations have been carried out in order to investigate and improve the performance of the Standard Cirrus glider, using different Navier-Stokes methods and solving the equations for the steady flow. The work has been divided in two parts: First, a study is performed to test the quality of the transition model (Gamma-ReTheta). LÄS MER

  3. 2. Simulation of AssistiveSystems for Elderly People

    Master-uppsats, Linnéuniversitetet/Institutionen för datavetenskap (DV)

    Författare :David Garcia Perez; [2014]
    Nyckelord :Emergency healthcare systems; healthcare modeling; discrete event simulation; Arena Simulation Software;

    Sammanfattning : Aging population is becoming a problem in a lot of countries, being Swedenone of them, and that is leading society to a lack of the necessary peopleto take care of all the elderly people. The CareIP device, an alarm systemfor the elderly people, with which they are able to ask for assistive help incase they need it, has been used all over Sweden for a while now. LÄS MER

  4. 3. IAS 36 - Goodwill : Utvecklingen av redovisningspraxis över tid

    Kandidat-uppsats, Företagsekonomiska institutionen

    Författare :Jens Thunstedt; David Perez; [2013]
    Nyckelord :IFRS; IAS 36; goodwill; nedskrivningstest; institutionell teori; redovisningspraxis;

    Sammanfattning : Sedan 2005 har alla börsnoterade bolag inom EU varit tvungna att ställa upp årsredovisningar i enlighet med IFRS. Redovisningen av posten goodwill har ändrats från att avskrivas linjärt till att bli föremål för ett årligt nedskrivningstest. LÄS MER

  5. 4. Designing schedules and Filter for cooperative localization

    Master-uppsats, KTH/Signalbehandling

    Författare :David Aguilar Pérez; [2012]
    Nyckelord :;

    Sammanfattning : In scheduled cooperative localization, devices in a network transmit pulses in a predetermined order. Every node measures inter-arrival time between received pulses to localize other nodes in the network. This thesis has looked into a few aspects of schedule based cooperative localization. LÄS MER

  7. 5. Energy savings in a school : Study of the ventilation and lighting systems in the school of Jädraås

    Magister-uppsats, Institutionen för teknik och byggd miljö

    Författare :David Pérez; [2008]
    Nyckelord :Chrot9;

    Sammanfattning : The aim of this project is to calculate how much energy could be saved in the School of Jädraås, in the municipality of Ockelbo. The objects of study were the lighting and the ventilation systems, not only because of the energy saving but due to the comfort also. LÄS MER