Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 28 for “"luggage"”.
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Improving Object Classification in X-ray Luggage Inspection
… from 60% to 80%, depending on the complexity of luggage bags.
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Simulation of X-ray imaging systems for luggage inspection
… describes XL, an x-ray imaging simulator for luggage inspection. This software system runs on a workstation and models x-ray sources, x-ray detectors and objects between them. A simple graphical interface permits the user to specify simulation parameters and inputs. XL then uses Monte Carlo …
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Automatic Detection of Elongated Objects in X-Ray Images of Luggage
… Tech on developing a prototype automatic luggage scanner for explosive detection, and it deals with the automatic detection of elongated objects (detonators) in x-ray images using matched filtering, the Hough transform, and information fusion techniques. A sophisticated algorithm has been …
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The Effect of Differing Degrees of Automation and Reliability on Simulated Luggage Screening Performance
… types of decision support systems in a simulated luggage screening task: An input aid and an output aid. An input aid supports an operator’s information gathering. An output aid supports decision making and action selection. A Time-Accuracy Function (TAF) analysis was applied to isolate processing …
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Safety at what price? : setting anti-terrorist policies for checked luggage on US domestic aircraft
… measure to keep bombs out of checked luggage - on US domestic passenger flights. We constructed a stochastic model for comparing the cost-effectiveness of three alternative approaches to PPBM: no PPBML implementation; a PPBM implementation that is applied to 5% of passengers; and a …
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Application of signal detection theory to the recognition of objects in colour-encoded x-ray images
… problems when interpreting x-ray images of hand luggage. This research seeks to determine whether the performance of the human operator can be improved, in terms of both reliability and accuracy, through the employment of a novel multiple-view x-ray imaging technique. Thus, a series of …
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Effects of Automation Failures During a Visual Inspection Task on Reliance and Visual Skill Acquisition: A Comparison Between Direct and Indirect Cueing
… automated aids of different reliabilities in a luggage screening task. A Direct Cue consisting of a green circle around a potential target directs attention to a specific part of the luggage image, while an Indirect Cue, consisting of a green border around an image determined to have a target, …
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View synthesis for depth from motion 3D x-ray imaging.
… (KDEX) technique is designed to enhance the luggage screening at airport checkpoints. The technique requires multiple views of the luggage to be obtained from an arrangement of linear X-ray detector arrays. This research investigated a solution to the unique problems defined when considering …
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Enhanced colour encoding of materials discrimination information for multiple view dual-energy x-ray imaging
… developed previously by the university team for luggage screening applications at security checkpoints. A primary motivation for this research is that the dual-energy X-ray techniques, which are routinely incorporated into ‘standard’ 2D luggage scanners, provide relatively crude materials …
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Towards the development of an explosives detection system using Neutron Resonance Radiography
… that mandate screening 100% of checked luggage. Neutron Resonance Radiography (NRR) has been under investigation as a supplement to conventional x-ray systems as a non-invasive, non-destructive means of detecting explosive material in checked luggage. Using fast (1-6 MeV) neutrons …
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Effects of Information Source, Pedigree and Reliability on Operators' Utilization of Decision Support Systems
… diagnostic accuracy (high vs. low) in an airline luggage-screening task. Biases toward automation (observed in Study 1) led to greater dependence on 'novice' automated aids than on 'novice' human advisers. However, biases in favor of automation broke down when automated aids believed to be …
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An Operations Research approach to aviation security
… policies for cargo, airmail and checked luggage carried on passenger aircraft are cost-effective.
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Fire modelling of passenger trains
… were developed, ranging from traditional luggage fires and arson to lithium-ion powered devices such as tablets, e-bikes, and e-scooters. The models were assessed in terms of heat release rate development, flashover potential, and available safe egress time at both 1.5 m and 0.9 m above …
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View synthesis for kinetic depth X-ray imaging
… and identification of threats in X-ray scans of luggage. A multi-view „KDEX scanner‟ was employed to collect greyscale and colour coded image sequences of 30 different bags; each sequence comprised of 7 perspective views separated from one another by 10. This imagery was organised and stored in a …
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Memories We Forget
… back of the family station wagon for me and the luggage. There was no radio, very little conversation, and I didn't sleep. I spent these summer trips staring for endless hours, out of the back window of the car, transfixed on the expanse of open road behind us. Since I bought my first car I have …
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Expansiveness and Security Through Materials and Design
… in the compartments located within while larger luggage and other belongings can be secured in lockers found in the locker rooms on the shower floors. I wanted to provide an additional sense of security for those traveling alone so there are berthing and shower floors designated for women and …
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The effect of venting configuration on the blast response of an aircraft unit load device
… fuselage decompression. The loading within a luggage container was expected to be reduced when the explosive products were vented into the adjacent ULDs. Although previous work has investigated the effect of venting on ULD blast loading, this has only considered a single venting side and not …
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Contextualizing Value: Market Stories in Mid-Victorian Periodicals
… externality. Chapter Two considers “Somebody’s Luggage” as Dickens’s argument for the contrivance of literary genre insofar as it constructs an exaggerated system of exchanges whereby the short story generates unprecedented income. Chapter Three moves to Gaskell’s “Cranford Papers” to argue that …
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Effects of Signal Ambiguity and Signal Location on Target Detection Under Varying Degrees of Time Constraint
… with deciding whether x-ray images of passenger luggage contained hazardous objects.</p> <p>The first objective of the study was to develop a methodology for quantifying optimizing versus satisficing tendencies in decision making through direct measurement and observation.</p> <p>The second …
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Detecting Threats from Constituent Parts: A Fuzzy Signal Detection Theory Analysis of Individual Differences
… working in threat-detection positions, such as luggage screeners, provides an exemplar of use of FSDT, and contributes to the understanding of human decision making.
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