Sökning: "information reduction"

Visar resultat 21 - 25 av 1282 avhandlingar innehållade orden information reduction.

  1. 21. Voluntary Information Sharing, Retail Pricing and Firm Performance

    Författare :Charlie Lindgren; Siril Yella; Niklas Rudholm; Johan Håkansson; Christian Sandström; Högskolan Dalarna; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Voluntary information sharing; online retailing; e-commerce; price comparison websites; CSR; consumer search;

    Sammanfattning : Online information sharing by firms has created an unprecedented amount of data to analyze by researchers. While conclusions from research should be drawn with basis in sound theory, there has also emerged a need to supplement these theoretical considerations with advanced data collection, storage and analysis as well as reporting to decisionmakers. LÄS MER

  3. 22. Spatio-Temporal Pre-Processing Methods for Region-of-Interest Video Coding

    Författare :Linda S. Karlsson; Tingting Zhang; Mårten Sjöström; Youzhi Xu; Apostolos Georgakis; Mittuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Region-of-interest; video coding; pre-processing; spatio-temporal filters; Computer and systems science; Data- och systemvetenskap;

    Sammanfattning : In video transmission at low bit rates the challenge is to compress the video with a minimal reduction of the percieved quality. The compression can be adapted to knowledge of which regions in the video sequence are of most interest to the viewer. LÄS MER

  4. 23. Prediction of Mobile Radio Channels : Modeling and Design

    Författare :Torbjörn Ekman; Rodney Vaughan; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Systemteknik; mobile radio channel; fading; channel model; channel estimation; channel prediction; power prediction; Systemteknik; Systems engineering; Systemteknik; Signal Processing; signalbehandling;

    Sammanfattning : Prediction of the rapidly fading envelope of a mobile radio channel enables a number of capacity improving techniques like fast resource allocation and fast link adaptation. This thesis deals with linear prediction of the complex impulse response of a channel and unbiased quadratic prediction of the power. LÄS MER

  5. 24. An Integrated System-Level Design for Testability Methodology

    Författare :Erik Larsson; Zebo Peng; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Digital systems; Test design; System-on-chip; Hardware; Systems design; Testing; Dissertations; Hårdvara; Systemutveckling; Testning; Databehandling Systemutveckling; Computer and systems science; Data- och systemvetenskap;

    Sammanfattning : HARDWARE TESTING is commonly used to check whether faults exist in a digital system. Much research has been devoted to the development of advanced hardware testing techniques and methods to support design for testability (DFT). LÄS MER

  7. 25. A-type Potassium Channels in Dendritic Integration : Role in Epileptogenesis

    Författare :Jenny Tigerholm; Erik Fransén; Fredrik Elinder; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; epileptogenesis; fast ripples; synchronicity; dendritic potentials; transient A–type potassium current; KV 4.2; Computer and systems science; Data- och systemvetenskap;

    Sammanfattning : During cognitive tasks, synchronicity of neural activity varies and is correlated with performance. However, there may be an upper limit to normal synchronised activity – specifically, epileptogenic activity is characterized byexcess spiking at high synchronicity. LÄS MER