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Abusive adversarial agents and attack strategies in cyber-physical systems

CAAI Transactions on Intelligence Technology 2023年第1期8卷 149-165页

作者： viraj singh Gaur Vishal Sharma John McAllister School of Electronics Electrical Engineering and Computer ScienceQueen's University BelfastBelfastUK

The exponential increase in IoT device usage has spawned numerous cyberspace *** devices,sensors,and actuators bridge the gap between physical processes and the cyber network in a cyber-physical system(CPS).Cyber-physical system is a complex system from a security perspective due to the heterogeneous nature of its components and the fact that IoT devices can serve as an entry point for *** adversaries design their attack strategies on systems to gain an advantage at a relatively lower cost,whereas abusive adversaries initiate an attack to inflict maximum damage without regard to cost or *** this paper,a sensor spoofing attack is modelled as a malicious adversary attempting to cause system failure by interfering with the feedback control *** is accomplished by feeding spoofed sensor values to the controller and issuing erroneous commands to the *** on a Simulink-simulated linear CPS support the proof of concept for the proposed abusive ideology,demonstrating three attack *** impact of the evaluations stresses the importance of testing the CPS security against adversaries with abusive settings for preventing ***,the research concludes by highlighting the limitations of the proposed work,followed by recommendations for the future.

关键词： intelligent systems security security evaluation

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MRI in liver cirrhosis

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Portal Hypertension & Cirrhosis 2022年第1期1卷 23-41页

作者： Osama Alzoubi Ahmad Arar viraj singh Sukru M.Erturk Ferenc Mozes Michael Pavlides School of Medicine The University of JordanAmmanJordan School of Public Health Texas A&M UniversityCollege StationTexasUSA Department of Radiology Faculty of MedicineIstanbul UniversityIstanbulTurkey Radcliffe Department of Medicine University of OxfordOxfordUK Translational Gastroenterology Unit University of OxfordOxfordUK Oxford NIHR Biomedical Research Centre University of OxfordOxfordUK

Liver magnetic resonance imaging(MRI)has seen a massive increase in its use over the last *** its first description in the early 1980s,contrast‐enhanced MRI is now the gold standard for the diagnosis of hepatocellular cancer in patients with liver *** like magnetic resonance(MR)elastography and combinations of multiple MR parameters in single scanning protocols are now available and these are opening new possibilities for the assessment of multiple aspects of disease in patients with liver *** this narrative review,we provide an overview of the use of MRI in patients with cirrhosis for the diagnosis of and screening for liver cancer,for the diagnosis of cirrhosis and prediction of long‐term outcomes,and for the evaluation of portal *** the multitude of techniques now available and the number of cirrhosis aspects that can be assessed by single scans make the study and application of MRI an attractive target in the search for a technique for use in this group of patients that often have to attend for multiple appointments and multiple tests,including invasive investigations.

关键词： hepatocellular cancer imaging biomarker liver cirrhosis Liver MultiScan MR elastography portal hypertension

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