Sökning: "Backward Algorithm"

Visar resultat 16 - 20 av 32 uppsatser innehållade orden Backward Algorithm.

  1. 16. Sensor-less Smart Waste Management System

    Master-uppsats, Uppsala universitet/Institutionen för informationsteknologi

    Författare :Rahul Sridhar Setty; [2019]
    Nyckelord :;

    Sammanfattning : In order to improve the municipal solid waste management efficiency, smart management approaches have been proposed such as wireless sensor network architecture solution which includes the use of sensors to detect the garbage bin fill levels and vehicle route optimization techniques. Experimental results show that we can save up to 35% of the operational cost by improving the efficiency of solid waste management. LÄS MER

  3. 17. Ray Tracing and Spectral Modelling of Excited Hydroxyl Radiation from Cryogenic Flames in Rocket Combustion Chambers

    Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Jaka Perovšek; [2018]
    Nyckelord :spectral modelling; excited hydroxyl radiation; OH* radiation; ray tracing; spectroscopy; rocket combustion chambers; rocket engines; hydrogen-oxygen combustion; combustion instabilities;

    Sammanfattning : A visualisation procedure was developed which predicts excited hydroxyl (OH*) radiation from the Computational Fluid Dynamics (CFD) solutions of cryogenic hydrogen-oxygen rocket flames. The model of backward ray tracing through inhomogeneous media with a continuously changing refractive index was implemented. LÄS MER

  4. 18. A Multi-Target Graph-Constrained HMM Localisation Approach using Sparse Wi-Fi Sensor Data

    Master-uppsats, KTH/Optimeringslära och systemteori

    Författare :Simon Danielsson; Jakob Flygare; [2018]
    Nyckelord :Hidden Markov Model; Localisation; Wi-Fi Sensors; Forward-Backward Algorithm; Baum-Welch Algorithm; Machine Learning; Time Series Analysis.; Hidden Markov Model; Lokalisering; Wi-Fi Sensorer; Forward-Backward Algoritm; Baum-Welch Algoritm; Maskinlärning; Tidsserieanalys.;

    Sammanfattning : This thesis explored the possibilities of using a Hidden Markov Model approach for multi-target localisation in an urban environment, with observations generated from Wi-Fi sensors. The area is modelled as a network of nodes and arcs, where the arcs represent sidewalks in the area and constitutes the hidden states in the model. LÄS MER

  5. 19. Simulation of cantilever construction of cable-stayed bridges taking into account time dependent phenomena

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :Josep Farre Checa; [2017]
    Nyckelord :Cable-stayed bridges; Cantilever method; Objective Service Stage; CIP concrete; Creep; Dischinger hypothesis; Forward analysis.;

    Sammanfattning : In the design of cable-stayed bridges, the construction analysis is very important since the worst stresses are usually reached during the construction process. In addition, if the bridge is made of concrete, the effects of time dependent phenomena have great importance. LÄS MER

  7. 20. Evaluation of flexible SPA based LPDC decoder using hardware friendly approximation methods

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Afshin Seraj; Deepak Yadav; [2017]
    Nyckelord :forward-backward; SPA; soft-xor; sum product algorithm; approximation; decoder; LDPC; Technology and Engineering;

    Sammanfattning : Due to computation-intensive nature of LDPC decoders, a lot of research is going towards efficient implementation of their original algorithm (SPA). As "Min-Sum" approximation is basically an overestimation of SPA, this thesis investigates more accurate, yet area efficient, approximations of SPA, to select an optimum one. LÄS MER