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Abusive adversarial agents and attack strategies in cyber-physical systems

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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

MIMO-WiMAX system incorporated with diverse transformation for 5G applications

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Frontiers of Optoelectronics 2019年第3期12卷 296-310页

作者： Lavish KANSAL vishal sharma Jagjit Singh MALHOTRA IKG Punjab Technical University JalandharIndia Department of Electronics & Communication Engineering SBSSTCFerozepurIndia Department of Electronics and Communication Engineering DAVIETJalandharIndia Affiliated to IKG Punjab Technical University JalandharPunjabIndia

Wireless systems and standards are now progressing toward the implementation of fifth generation (5G) to combat with an expected and explosive growth of demands of wireless services in future. Consequently, wireless interoperability for microwave access (WiMAX) with orthogonal frequency division multiplexing (OFDM) technology at its physical layer is being utilized for the uplink and downlink transmission to afford the high spectral efficiency in fading environments. However, the 5G implementation requires additional improvements to meet the futuristic stress. This work proposes an innovative solution that combines WiMAX system with multiple input multiple output (MIMO) technology to meet the required elevated data rates as desired by the growing application needs of 5G. MIMO is capable to fulfil the vision of 5G to realize a huge number of base stations equipped with a large number of terminals to be served in the same time-frequency resource without severe inter-user interference. Furthermore, the proposed system is demon- strated incorporation with discrete wavelet transform (DWT), and fractional Fourier transforms (FrFTs) in the physical layer of the WiMAX system. The evaluated outcomes exemplify a considerable improvement in bit error rate (BER) performance in contrast with the earlier reported work.

关键词： wireless interoperability for microwave access (WiMAX) orthogonal frequency division multiplexing (OFDM) multiple input multiple output (MIMO) fast Fourier transform (FFT) discrete wavelet transform (DWT) fractional Fourier transform (FrFT)

Dengue and its effects on liver

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World Journal of Clinical Cases 2015年第2期3卷 125-131页

作者： Jayanta Samanta vishal sharma Department of Gastroenterology Postgraduate Institute of Medical Education and Research

Dengue has emerged as an important arboviral disease with significant impact on the disease burden in population residing in tropical countries. Dengue is spread by the bite of Aedes mosquito. The virus seems to have some hepatotoxic effects. Affliction of liver in form of derangements in the liver function tests is common and may include mild elevations in serum bilirubin, elevated transaminases and derangements in serum albumin. Although asymptomatic in most cases, clinical manifestations like jaundice, and acute liver failure(ALF) may occasionally complicate the clinical picture. Indeed, dengue has been implicated as an important cause of ALF in endemic countries. The present review focuses on the hepatic manifestations and the pathogenesis of the liver injury in dengue.

关键词： Dengue Liver Viral hepatitis Acute liver failure Transaminases Bilirubin

Abdominal aortic thrombosis and tuberculosis:an uncommon association

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Gastroenterology Report 2014年第4期2卷 311-312页

作者： Alka sharma vishal sharma Department of Medicine Government Medical College and HospitalSector 32ChandigarhIndia Department of Gastroenterology Postgraduate Institute of Medical Education and ResearchChandigarhIndia

Thrombosis of the abdominal aorta is an uncommon event and usually occurs in a diseased *** report a case of a 42-year-old male who presented with abdominal distension and was found to have tuberculosis-related ascites and was incidentally found to have aortic *** patient improved with four-drug anti-tubercular therapy and *** occurrence of non-occlusive thrombosis of the abdominal aorta in tuberculosis is unusual.

关键词： Vasculitis thrombosis tuberculosis aorta

Introduction to the Special Issue on Advanced Security for FutureMobile Internet:A Key Challenge for the Digital Transformation

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Computer Modeling in Engineering & Sciences 2024年第12期141卷 1907-1909页

作者： Ilsun You Xiaofeng Chen vishal sharma Gaurav Choudhary Department of Financial Information Security Kookmin UniversitySeoul-si02707Republic of Korea School of Network and Information Security Xidian UniversityXi’an710071China School of Electronics Electrical Engineering and Computer ScienceQueen’s University Belfast(QUB)BelfastBT71NNUK Centre for Industrial Software(CIS) The Maersk Mc-Kinney Moller InstituteUniversity of Southern DenmarkSønderborg6400Denmark

Mobile internet technologies have transformed our daily lives,allowing us to connect,communi-cate,and access various services and applications anytime and *** technologies are set to play a significant role in the next generation of digital transformation,further increasing their impact by integrating with emerging technologies like 6G,quantum computing,and generative AI.

关键词： services Internet internet

SCADA data based condition monitoring of wind turbines

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Advances in Manufacturing 2014年第1期2卷 61-69页

作者： Ke-Sheng Wang vishal S.sharma Zhen-You Zhang Department of Production and Quality Engineering NorwegianUniversity and Science and Technology Trondheim Norway Department of'Industrial and Production Engineering Dr. B .R.Ambedkar National Institute of Technology Jalandhar PunjabIndia

Wind turbines（WTs） are quite expensive pieces of equipment in power industry. Maintenance and repair is a critical activity which also consumes lots of time and effort, hence making it a costly affair. Carefully planning the maintenance based upon condition of the equipment would make the process reasonable. Mostly the WTs are equipped with some kind of condition monitoring device/system, which provides the information about the device to the central data base i.e., supervisory control and data acquisition（SCADA） data base. These devices/systems make use of data processing techniques/methods in order to detect and predict faults. The information provided by condition monitoring equipments keeps on recoding in the SCADA data base. This paper dwells upon the techniques/methods/algorithms developed, to carry out diagnosis and prognosis of the faults, based upon SCADA *** data driven approaching for SCADA data interpretation has been reviewed and an artificial intelligence（AI） based framework for fault diagnosis and prognosis of WTs using SCADA data is proposed.

关键词： SCADA data Data-driven approaches Artificial intelligence (AI) Diagnosis and prognosis ofwind turbines Central monitoring system (CMS)

An Acoustic Analysis of Fluctuations for Inter-and Intra-Speaker Variability in Speech Sounds

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Journal of Forensic Science and Medicine 2023年第1期9卷 38-43页

作者： Jasdeep Kaur Kailash Chandra Juglan Kush sharma vishal sharma Department of Physics School of Chemical Engineering and Physical Sciences Lovely Professional UniversityPhagwaraPunjab Data Manager School of Community Medicine and Public HealthPostgraduate Institute of Medical Education and ResearchChandigarh Institute of Forensic Science and Criminology Panjab UniversityChandigarhIndia

Background:Variation in the speech of speakers is a crucial issue for the forensic *** main reason behind incorrect speaker identification is greater intra-speaker *** the forensic state of play,a lot of research has been carried out on speaker *** inter variations and intra fluctuations in speakers for the Punjabi language is still a grey *** and Objectives:Our aim is to study acoustic analysis of fluctuations for inter and intra speaker variability in speech *** our study,we will consider Punjabi vowel with *** Statistical methods will be applied to analyze the data;firstly,the Shapiro-Wilk test will be checked for normality and then Levene’s Test to assess the equality of *** and Method:Five vowels were selected with different *** were combined to make meaningful *** these meaningful words were embedded in *** speakers participated *** are students of A.S College at Khanna in *** individuals were aged between 20-22 years with no hearing or speech *** voice samples were recorded with help of good quality microphone and by Goldwave software in the sound proof *** were introduced directly into PRAAT software by the use of a Sony microphone and with sampling rate of 44100 Hz *** Analysis has been done with help of Goldwave software in form of *** and Conclusion:Each formant shows a different value for inter variations and inter speaker fluctuations.F1 and F2 shows lesser speaker variation than the high-frequency region in F3 and F4,so we can say that in comparison with the lower part,high-frequency regions are more *** assumptions for TWO-WAY ANOVA is violated and hence,we have used the non-parametric Friedman Test and performed its Post hoc *** Posthoc analysis,we can say that F1 and F2(p>0.05)and F2 and F3(p>0.05)gave the same type of ***,from the results of these st

关键词： Forensic voice identification Friedman test intervariations and intrafluctuations Punjabi

An unusual cause of simultaneous common bile and pancreatic duct dilation

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Gastroenterology Report 2015年第3期3卷 258-261页

作者： Puneet Chhabra Surinder Singh Rana vishal sharma Ravi sharma Rajesh Gupta Deepak Kumar Bhasin Department of Gastroenterology Postgraduate Institute of Medical Education and Research(PGIMER)ChandigarhIndia Department of Surgery Postgraduate Institute of Medical Education and Research(PGIMER)ChandigarhIndia

Simultaneous dilation of both the common bile duct and the pancreatic duct(double-duct sign)is usually because of ampullary or pancreatic *** we report an unusual cause of double-duct dilation;we describe the case of a 49-year-old female who developed afferent loop syndrome after pylorus-preserving pancreaticoduodenectomy:crosssectional imaging of the abdomen revealed a double-duct sign.

关键词： afferent loop syndrome pylorus preserving pancreaticoduodenectomy

Clinical outcomes and prognostic significance of early *** computed tomography in acute pancreatitis

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Gastroenterology Report 2015年第2期3卷 144-147页

作者： vishal sharma Surinder S.Rana Ravi K.sharma Rajesh Gupta Deepak K.Bhasin Department of Gastroenterology Postgraduate Institute of Medical Education and ResearchChandigarh 160012India Department of Surgery Postgraduate Institute of Medical Education and ResearchChandigarh 160012India

Background:Guidelines recommend that contrast-enhanced computed tomography(CT)should be carried out 72 hours after onset of an attack of acute pancreatitis(AP).However,the exact time beyond 72 hours at which CT will produce the best diagnostic yield for local complications,or whether doing a CT early in acute pancreatitis has any adverse effect on the course of disease,is not ***:The medical records of 214 consecutive patients with AP were analysed retrospectively and these patients were divided into two groups:the early CT group(CT done at 4–5 days after the onset of pain)and the late CT group(CT done in days 6–14 following onset of pain).The two groups were compared for differences in clinical outcomes and prognostic information obtained from CT,such as detection of pancreatic necrosis and local complications,and CT severity ***:Of 214 patients[143(66.8%)males;mean age 39.87613.52 years],21 patients were excluded as they did not undergo CT or CT was done more than 14 days after onset of an attack of *** early CT group included 114 patients,whilst the late CT group had *** mean CT severity index was higher in the late CT group(6.6562.27 vs.5.5262.7;P=0.005).The incidence of persistent organ failure in the early group was no different from that of the late group(38.6%vs.49.4%;P=0.143).Local complications were detected more often in the late CT group(84.8%vs.68.4%;P=0.011).There was no difference between the two groups in the need for percutaneous drainage,surgery,or mortality(all P>0.05).Conclusions:Although performing early CT does not adversely affect the outcome in AP,CT carried out more than 5 days after the onset of symptoms may detect more local complications.

关键词： acute pancreatitis computed tomography complications clinical outcomes