Sökning: "Signal detection theory"

Visar resultat 1 - 5 av 35 uppsatser innehållade orden Signal detection theory.

  1. 1. Detektering av pendlingar i kraftsystem

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Elektricitetslära

    Författare :Henrik Lönnberg; [2020]
    Nyckelord :pendlingar; oscillationer; detektering; kraftsystem; elkraft; svenska kraftnät;

    Sammanfattning : Oscillations in power systems are a common problem that cause wear and decreased electric power quality. Hence, it is of great importance to detect when oscillations occur and to analyze which machines that are involved. LÄS MER

  3. 2. Thermal Stability of Titanium and Niobium Stabilized Stainless Steel

    Master-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Författare :Oskar Darselius Berg; [2020]
    Nyckelord :Technology and Engineering;

    Sammanfattning : This master thesis examined the microstructure after heat treatments in stainless steel, two conventional stainless steel (304 and 316) and two novel high temperature stainless steel. These stainless steels are for the use in high temperature heat exchangers for extended temperature range. LÄS MER

  4. 3. Condition monitoring of induction machines using a signal injection technique

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Sathiya Lingam Senthil Kumar; [2020]
    Nyckelord :Condition monitoring; fault detection; fault diagnosis; stator winding fault; inter-turn fault.; Tillståndsövervakning; feldetektering; feldiagnos; statorlindningsfel; kortslutning mellan varv.;

    Sammanfattning : Condition monitoring techniques can be employed to enhance reliability of electric machinery. The stator winding fault is one of the dominant causes for the failure of induction machines. In this work, the condition monitoring of an inverter-fed induction machine using high-frequency signal injection based technique is investigated. LÄS MER

  5. 4. Unified theory and experimental approach for measuring restricted diffusion and water exchange

    Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

    Författare :Arthur Chakwizira; [2020]
    Nyckelord :Medicine and Health Sciences;

    Sammanfattning : Fifteen million people lose their lives to stroke and cancer every year. This amounts to one in every four deaths worldwide, making these among the deadliest diseases affecting humankind. Fruitful attempts at containing stroke- and cancer-related mortality hinge on early detection. LÄS MER

  7. 5. Detection of Sparse and Weak Effects in High-Dimensional Supervised Learning Problems, Applied to Human Microbiome Data

    Master-uppsats, KTH/Matematisk statistik

    Författare :Fred Lindahl; [2020]
    Nyckelord :Signal detection; signal identification; higher criticism; microbiome data; sparse and weak effects; goodness-of-fit tests; kolmogorov-smirnov tests; Signal detektering; signal identifiering; higher criticism; mikrobiom data; glesa och svaga effekter; goodness-of-fit tester; Kolmogorov-smirnov tester;

    Sammanfattning : This project studies the signal detection and identification problem in high-dimensional noisy data and the possibility of using it on microbiome data. An extensive simulation study was performed on generated data using as well as a microbiome dataset collected on patients with Parkinson's disease, using Donoho and Jin's Higher criticism, Jager and Wellner's phi-divergence-based goodness-of-fit-test and Stepanova and Pavlenko's CsCsHM statistic . LÄS MER