Sökning: "detector response"

Visar resultat 16 - 20 av 48 uppsatser innehållade orden detector response.

  1. 16. A Client-Server Solution for Detecting Guns in School Environment using Deep Learning Techniques

    Magister-uppsats, Linköpings universitet/Medie- och Informationsteknik; Linköpings universitet/Tekniska högskolan

    Författare :Johan Olsson; [2019]
    Nyckelord :machine learning; gun detection; tensorflow; server; client; training; school shootings; school environment; gun control; SSD; RetinaNet; transfer learning; AI; surveillance; IP; network; camera; Axis; Communications;

    Sammanfattning : Att använda maskininlärning för att detektera vapen eliminerar en konstant mänsklig övervakning, vilket också kan leda till en lägre responstid till polis. I den här rapporten undersöks hur en vapendetektor kan konstrueras och byggas som en del av en klient-server-lösning. .. LÄS MER

  3. 17. 2D Neutron Imaging with 10B-Based Multi-Blade Detector

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

    Författare :Tõnu Ilves; [2018]
    Nyckelord :thermal; neutron; imaging; 2D; Multi-Blade; detector; boron; boron-10; nuclear physics; multi wire proportional chamber; digitizer; ESS; European Spallation Source; surface study; reflectometry; Physics and Astronomy;

    Sammanfattning : In the field of thermal-neutron imaging, the Multi-Blade detector concept and design, being developed for the upcoming European Spallation Source in Lund, Sweden, is unique. The current report presents, for the first time, the neutron-imaging capabilities of a boron-10-based Multi-Blade thermal-neutron detector, measured at a reflectometry instrument at Rutherford Appleton Laboratory in Oxfordshire, England under high spallation neutron flux. LÄS MER

  4. 18. Assessment of image quality in x-ray fluoroscopy based on Model observers as an objective measure for quality control and image optimization

    Master-uppsats, Stockholms universitet/Fysikum

    Författare :Henrik Elgström; [2018]
    Nyckelord :image quality; fluoroscopy; Model observer;

    Sammanfattning : BACKGROUND: Although the Image Quality (IQ) indices calculated by objective Model observers contains more favourable characteristics compared to Figure Of Merits (FOM) derived from the more common subjective evaluations of modern digital diagnostic fluoroscopy units, like CDRAD or the Leeds test-objects, practical issues in form of limited access to unprocessed raw data and intricate laboratory measurements have made the conventional computational methods too inefficient and laborious. One approach of the Statistical Decision Variables (CDV) analysis, made available in the FluoroQuality software, overcome these limitations by calculating the SNR2rate from information entirely based on image frames directly obtained from the imaging system, operating in its usual clinical mode. LÄS MER

  5. 19. RF BiST för att detektera IQ-imbalanser avseende överhörningseffekter för avancerade antennsystem

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

    Författare :Kishore Khed; [2018]
    Nyckelord :Technology and Engineering;

    Sammanfattning : Internet of Things (IoT) is a network constituted by uniquely identifiable commodity objects or devices equipped with some sensing system. To achieve high data rates required for IoT devices, a modern wireless communication system, known as Advanced Antenna Systems(AAS), leads to significant improvement, by increasing not only the data rate but also spectrum efficiency and the channel capacity. LÄS MER

  7. 20. Initial Characterization of a Pixelated Thermal-Neutron Detector

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

    Författare :Amanda Jalgén; [2017]
    Nyckelord :Neutron; detector; spallation; scintillator; photomultiplier tube; Physics and Astronomy;

    Sammanfattning : The purpose of this project was to develop a better understanding of the re- sponse of a pixelated thermal-neutron detector, which will be used as a thermal- neutron detector at one of the beam lines at the European Spallation Source in Lund, Sweden. The detector consists of a thin Lithium6-glass scintillator, a multi-anode photomultiplier tube and associated read-out electronics. LÄS MER