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On the Use of Deep Learning for the Detection of Firearms in X-ray Baggage Security Imagery

Yona Falinie A. Gaus, Neelanjan Bhowmik, Toby P. Breckon
2019 2019 IEEE International Symposium on Technologies for Homeland Security (HST)  
X-ray imagery security screening is essential to maintaining transport security against a varying profile of prohibited items.  ...  This result illustrates the applicability and superiority of such integrated region based detection models within this X-ray security imagery context.  ...  Acknowledgements: The authors would like to thank the UK Home Office for partially funding this work. Views contained within this paper are not necessarily those of the UK Home Office.  ... 
doi:10.1109/hst47167.2019.9032917 fatcat:dipqmtntdvddpfabfye7ucgfsu


2013 Nuclear Engineering and Technology  
ACKNOWLEDGMENTS The U.S. Department of Energy, Office of Nuclear Energy Fuel Cycle Technologies R&D Program supports the MPACT Campaign.  ...  analysis (there are about 3 time more gamma rays per fission as neutrons).  ...  This goes beyond simply providing adequate physical security for a storage facility given that the characteristics of the fuel vary with time presenting a time-dependent problem and one must consider the  ... 
doi:10.5516/net.02.2013.527 fatcat:cikr32kyovfqnbdt2s7fpaowoy

Security Checkpoint Optimizer (SCO): An Application for Simulating the Operations of Airport Security Checkpoints

Diane Wilson, Eric Roe, S. So
2006 Proceedings of the 2006 Winter Simulation Conference  
This paper presents Security Checkpoint Optimizer (SCO), a 2-D spatially aware discrete event simulation tool developed by Northrop Grumman for the Transportation Security Administration (TSA), a part  ...  For most security planners, a key challenge is to continuously evaluate how changes or additions to their facilities or procedures impact security effectiveness, operational costs, and passenger throughput  ...  protocols for the nation's transportation security checkpoints in a timely and efficient manner.  ... 
doi:10.1109/wsc.2006.323126 dblp:conf/wsc/WilsonRS06 fatcat:gc7wbtv6cfdorarpewn4pbpfbe

Fast optical position‐sensitive detector for McPherson ESCA‐36

P. A. Bertrand, W. J. Kalinowski, L. E. Tribble, L. U. Tolentino
1983 Review of Scientific Instruments  
A major drawback to XPS is the low count rate and consequent long periods of time needed for analysis. This requires stringent vacuum conditions and causes sample damage from long x-ray exposures.  ...  The one-for-one mode was used to determine the dispersion function by measuring the number of channels between peaks whose energy separation (in electron volts) is well known.  ...  Information Sciences Research Office: Program verification, program translation, performance-sensitive system design, distributed architectures for spaceborne computers, fault-tolerant computer systems  ... 
doi:10.1063/1.1137380 fatcat:4plvdunrkbchbbcpnkwlozpbna

Agent-based vulnerability assessment at airport security checkpoints: A case study on security operator behavior

Stef Janssen, Arjan van den Berg, Alexei Sharpanskykh
2020 Transportation Research Interdisciplinary Perspectives  
Simulation results indicate that the highest skilled operators outperformed their lowest skilled counterparts on analyzing X-ray images, but performed worse on both searching luggage and performing patdowns  ...  Furthermore, results showed that a high focus on speed of security operators leads to a decrease in luggage searches and therefore increased vulnerability.  ...  For instance, when X-ray officers do their work remotely, our model can be adapted with relative ease to determine the performance of such a setup.  ... 
doi:10.1016/j.trip.2020.100139 fatcat:5n6yan6jvfai5huall7xge4iga

Massively Parallel Monte Carlo:Experiences Running Nuclear Simulations on a Large Condor Cluster

2011 Progress in Nuclear Science and Technology  
This requires classification of jobs according to anticipated run-time and priority and careful optimization of the parameters used to control job allocation to host machines.  ...  Successful operation must balance the competing goals of maximizing the availability of machines for running jobs whilst minimizing the impact on users' PC performance.  ...  We have developed an on-stream instrument that uses energy-dispersive X-ray diffraction (EDXRD) to carry out quantitative mineralogical analysis on slurries. 13) The analyser must determine the proportions  ... 
doi:10.15669/pnst.2.676 fatcat:ilxavg5umrhfvc5op7j6pfeyzi

Combating terrorism against commercial aviation

C Kurt Zorn
1996 Journal of Transportation Management  
OTA thought determination of the optimal configuration for the system would be fairly easy and be dependent on things like peak passenger flow, required throughput rate (how many bags can be processed  ...  A third method of bulk detection was the use of x-ray technologies such as the backscatter x-ray and computerized tomography.  ... 
doi:10.22237/jotm/841536180 fatcat:dap6s4f4bze3fntryudv5w5oby

Modelling and Managing Airport Passenger Flow: A Case of Hasan Polatkan Airport in Turkey

İlkay Orhan, Gamze Orhan
2020 International Journal of Aviation Science and Technology  
of time-related constraints.  ...  The model comprises security screening, check-in, passport control and boarding processes.  ...  At the x-ray security point, which is the first entry point of the passengers to the airport, 2 devices serve and 4 officers work on each device.  ... 
doi:10.23890/ijast.vm01is02.0204 fatcat:oiebu43ahrbt3ppj5lmhj5qxbe

Understanding Impacts of Security Check on Passenger Flow in a Metro Station and Improving Measures: A Case Study in Guangzhou, China

Heng Yu, Yimin Wang, Feng Wang, Peiyun Qiu
2019 Journal of Advanced Transportation  
In addition, possible improving measures such as adding security check machines and ticket vending machines were also modeled to test their effectiveness on reducing the congestion in the station.  ...  How security check will impact the passenger flow and how to reduce the impact are questions that need to be addressed.  ...  Acknowledgments The authors would like to thank the Ministry of Science and Technology (P.R. China) for its funding (National Key R&D Program of China. No. 2016YFC0802500), and Mr.  ... 
doi:10.1155/2019/7438545 fatcat:cgvcdoqfs5cvjknge3vm6fjyny

Proposed New Accelerator Design for Homeland Security X-Ray Applications

James Clayton, Daniel Shedlock, Willem G.J. Langeveld, Vinod Bharadwaj, Yuri Nosochkov
2015 Physics Procedia  
One commonly used technique to determine the effective Z of the cargo is dual-energy imaging, i.e. imaging with different x-ray energy spectra.  ...  Typical accelerators for security applications offer large but short bursts of x-rays, suitable for currentmode integrated imaging.  ...  This support does not constitute an express or implied endorsement on the part of the Government.  ... 
doi:10.1016/j.phpro.2015.05.032 fatcat:l7kspp2ys5c3de5csgybvpas5m

Masses and Beta-decay Studies of Neutron-rich Nuclei using the X-array and Gammasphere

F.G. Kondev, D.J. Hartley, R. Orford, J.A Clark, G. Savard, K. Auranen, A.D. Ayangeakaa, S. Bottoni, M.P. Carpenter, P. Copp, K. Hicks, C.R. Hoffman (+17 others)
2019 EPJ Web of Conferences  
During the first experiment, beams from the Californium Rare Isotope Breeder Upgrade radioactive beam facility were used in conjunction with the SATURN decay station and the X-array.  ...  Evidence was found for a change in the single-particle structure, which in turn results in the formation of a sizable N=98 sub-shell gap at large deformation.  ...  A solution to this problem is a tape-transport system which can be used to implant the CARIBU beams into the center of the spectrometer for an optimal collection time (usually 1-5 half-lives of the nuclide  ... 
doi:10.1051/epjconf/201922301028 fatcat:jbtjge3cureyposu7wy4vj3a3i

The analysis of problems, causes, and efforts to resolve problems in the service of covid-19 patients at the army hospital in Padang City

Adila Kasni Astiena, Mohamad Reza, Fitri Sari Susanty, Jonsriwanto, L. Comfort, S. Saravanan, I.W. Sengara, Fauzan
2021 E3S Web of Conferences  
The study was conducted in October-December 2020. The unit of analysis is an emergency department for the Covid and non-covid services.  ...  This study aims to analyze efforts to optimize services for COVID-19 patients during the adaptation period for new habits. The research design is qualitative.  ...  Material There is no portable X-ray device yet There is no portable X-ray device so that the examination for COVID and Non-COVID patients is carried out alternately.  ... 
doi:10.1051/e3sconf/202133101015 fatcat:pyhjp5wmwnathhvyzsmbwfdeiy

Superconducting Accelerators for High-Power X-ray production [article]

Thomas K. Kroc
2022 arXiv   pre-print
The focus is to produce x-ray beams for medical device sterilization to provide alternatives for the present use of cobalt-60 for this purpose.  ...  However, when the electron beam is used for the production of photons (x-rays) which are then to be used in an application, this is not sufficient to compete with other sources of photons (gamma rays from  ...  of gamma and x-ray facilities suggests that long term costs for an x-ray facility are less than for gamma when the effective capacity is greater than 1-2 MCi. [3] .  ... 
arXiv:2202.07702v1 fatcat:lsrfm6dgibcthknlbpv7bfqbua

Evaluation of a Dual Convolutional Neural Network Architecture for Object-wise Anomaly Detection in Cluttered X-ray Security Imagery

Yona Falinie A. Gaus, Neelanjan Bhowmik, Samet Akcay, Paolo M. Guillen-Garcia, Jack W. Barker, Toby P. Breckon
2019 2019 International Joint Conference on Neural Networks (IJCNN)  
Of particular interest is the focus on automated security X-ray analysis for particular classes of object such as electronics, electrical items and liquids.  ...  Please consult the full DRO policy for further details. Abstract-X-ray baggage security screening is widely used to maintain aviation and transport secure.  ...  Early work on anomaly detection in X-ray security imagery [27] , implements block-wise correlation analysis between two temporally aligned scanned X-ray images.  ... 
doi:10.1109/ijcnn.2019.8851829 dblp:conf/ijcnn/GausBAGBB19 fatcat:u4a777sxqzh4dcqhkz2m4gskke

Agency Problems and Airport Security: Quantitative and Qualitative Evidence on the Impact of Security Training

Martina de Gramatica, Fabio Massacci, Woohyun Shim, Uğur Turhan, Julian Williams
2016 Risk Analysis  
Our results indicate that the effectiveness of additional training depends on the mix of 'transferable skills', and 'emotional' buy-in of the security agents.  ...  To provide empirical evidence for the trade-offs identified in the quantitative model we have undertaken an extensive interview process with regulators, airport managers, security personnel and those tasked  ...  ACKNOWLEDGMENTS We would like to thank the anonymous reviewers for their helpful comments and suggestions. We would also like to acknowledge the invaluable support of Drs.  ... 
doi:10.1111/risa.12607 pmid:27031572 fatcat:sx7viszdprhdjntpiobbedfm3a
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