Sökning: "false alarms"

Visar resultat 16 - 20 av 32 avhandlingar innehållade orden false alarms.

  1. 16. Information-Flow Tracking for Web Security

    Författare :Luciano Bello; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The Web is evolving into a melting pot of content coming from multiple stakeholders. In this mutually distrustful setting, the combination of code and data from different providers demands new security approaches.This thesis explores information-flow control technologies to provide security for the current Web. LÄS MER

  3. 17. Fault detection in lambda-tuned control loops

    Författare :Magnus Berndtsson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Reglerteknik; Control Engineering;

    Sammanfattning : Poorly operating control loops cause loss in productivity in almost every industry worldwide. Therefore performance monitoring has been an active area of research for the past decades. In this work, a newly developed fault detection method is applied to the monitoring of lambda-tuned control loops. LÄS MER

  4. 18. Machinery diagnostic techniques for maintenance optimization

    Författare :Juhamatti Saari; Jan Lundberg; Kalevi Huhtala; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Drift och underhållsteknik; Operation and Maintenance;

    Sammanfattning : One of the future challenges of machinery diagnostics and prognosticsis to prepare for the Internet of Things (IoT), where it is possible to change and improve existing approaches drastically. An intensifying application of the IoT will increase the use of embedded sensors and, therefore, create a demand for diagnostic tools where manual workis minimized and is mainly handled by smart algorithms. LÄS MER

  5. 19. A Fault Detection Framework Using Recurrent Neural Networks for Condition Monitoring of Wind Turbines

    Författare :Yue Cui; Lina Bertling; Pramod Bangalore; Bikash C Pal; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; asset management; condition monitoring; fault detection; preventive maintenance; recurrent neural networks; two-stage threshold; wind power; kapitalförvaltning; underhållsstyrning; tillståndsövervakning; feldetektering; förebyggande underhåll; återkommande neurala nätverk; tvåstegs tröskel; vindkraft; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : The global energy system is experiencing a transition to a sustainable system with ambitious targets for increased use of renewable energy. One key trend for this transition has been the large introduction of wind power and integration into the electricity grid. LÄS MER

  7. 20. The Use of Press Archives in the Temporal and Spatial Analysis of Rainfall-Induced Landslides in Tegucigalpa, Honduras, 1980-2005

    Författare :Elias Garcia-Urquia; Kristofer Gamstedt; José Cepeda; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; press archives; landslide database; urban landslides; critical rainfall intensity; antecedent rainfall; rainfall frequency contour lines; matrix method; landslide susceptibility index; Tegucigalpa; Honduras; Hurricane Mitch; Geovetenskap med inriktning mot miljöanalys; Earth Science with specialization in Environmental Analysis;

    Sammanfattning : The scarcity of data poses a challenging obstacle for the study of natural disasters, especially in developing countries where the social vulnerability plays as important a role as the physical vulnerability.  The work presented in this thesis is oriented towards the demonstration of the usefulness of press archives as a data source for the temporal and spatial analysis of landslides in Tegucigalpa, Honduras for the period between 1980 and 2005. LÄS MER