Ioannis Tsitsimpelis
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View article: Low-density collimators for remote radiation characterisation tasks
Low-density collimators for remote radiation characterisation tasks Open
View article: Bayesian Optimization for real-time γ-localization measurements with robotic platforms
Bayesian Optimization for real-time γ-localization measurements with robotic platforms Open
An adaptive approach driven by Bayesian Optimization is described for applications where remote radiation measurements made with robots are constrained by stringent upper thresholds on the mass and power payload of the necessary instrument…
View article: Modelling Radiation Sensor Angular Responses with Dynamic Linear Regression
Modelling Radiation Sensor Angular Responses with Dynamic Linear Regression Open
Accurate characterization of radiation hotspots is a critical requirement for monitoring and decommissioning operations in the nuclear industry, particularly where the arrangement of contamination is complex, and the availability of ground…
View article: Localising and identifying radionuclides via energy-resolved angular photon responses
Localising and identifying radionuclides via energy-resolved angular photon responses Open
View article: Improved localization of radioactivity with a normalized sinc transform
Improved localization of radioactivity with a normalized sinc transform Open
A technique for the in-situ localization of radioactivity is described in which the influence of γ-radiation impinging on a high-Z collimator, by which the angular response of a scintillation detector is constrained in order to identify th…
View article: Real-Time Avoidance of Ionising Radiation Using Layered Costmaps for Mobile Robots
Real-Time Avoidance of Ionising Radiation Using Layered Costmaps for Mobile Robots Open
Humans in hazardous environments take actions to reduce unnecessary risk, including limiting exposure to radioactive materials where ionising radiation can be a threat to human health. Robots can adopt the same approach of risk avoidance t…
View article: Use of Gaussian process regression for radiation mapping of a nuclear reactor with a mobile robot
Use of Gaussian process regression for radiation mapping of a nuclear reactor with a mobile robot Open
View article: Simultaneous, Robot-Compatible γ-Ray Spectroscopy and Imaging of an Operating Nuclear Reactor
Simultaneous, Robot-Compatible γ-Ray Spectroscopy and Imaging of an Operating Nuclear Reactor Open
The design and test of a robot-compatible, radiation detection instrument providing simultaneous γ-ray imaging and γ-ray spectroscopy is described. The sensing system comprises a cerium bromide inorganic scintillation detector and a cylind…
View article: The potential of real-time, fast neutron and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll" id="d1e92" altimg="si13.gif"><mml:mi>γ</mml:mi></mml:math> radiography for the characterization of low-mass, solid-phase media
The potential of real-time, fast neutron and radiography for the characterization of low-mass, solid-phase media Open
Most techniques that are used for transmission imaging with ionizing radiation use X-rays, which have the advantage of providing quick, high-resolution images with a relatively small dose of radiation. However, they also have the disadvant…
View article: A review of ground-based robotic systems for the characterization of nuclear environments
A review of ground-based robotic systems for the characterization of nuclear environments Open
View article: Micro-climate modelling and engineering design for a horticultural grow-cell prototype
Micro-climate modelling and engineering design for a horticultural grow-cell prototype Open
This thesis is concerned with controlled environment horticulture, with a particular focus on two practical examples, namely a laboratory scale forced ventilation chamber and a full-sized prototype grow-cell developed in collaboration with…
View article: Development of a grow-cell test facility for research into sustainable controlled-environment agriculture
Development of a grow-cell test facility for research into sustainable controlled-environment agriculture Open
The grow-cell belongs to a relatively new category of plant factory in the horticultural industry, for which the motivation is the maximization of production and the minimization of energy consumption. This article takes a systems design a…