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Physical Layer Security of 6G Vehicular Networks with UAV Systems:First Order Secrecy Metrics,Optimization,and Bounds

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Computers, Materials & Continua 2024年第9期80卷 3685-3711页

作者： Sagar Kavaiya Hiren Mewada sagarkumar patel Dharmendra Chauhan Faris A.Almalki Hana Mohammed Mujlid Smt.Chandaben Mohanbhai patel Institute of Computer Applications Charotar University of Science and TechnologyChangaAnand388421India Electrical Engineering Department Prince Mohammad Bin Fahad UniversityP.O.Box 1664Al Khobar31952Kingdom of Saudi Arabia Department of Electronics and Communication Engineering Chandubhai S.Patel Institute of TechnologyCharotar University of Science and TechnologyChangaAnand388421India Department of Computer Engineering College of Computers and Information TechnologyTaif UniversityP.O.Box 11099Taif21944Kingdom of Saudi Arabia

The mobility and connective capabilities of unmanned aerial vehicles(UAVs)are becoming more and more important in defense,commercial,and research ***,their open communication makes UAVs susceptible toundesirablepassive attacks suchas eavesdroppingor ***,the inefficiencyof traditional cryptography-based techniques has led to the addition of Physical Layer Security(PLS).This study focuses on the advanced PLS method for passive eavesdropping in UAV-aided vehicular environments,proposing a solution to complement the conventional cryptography ***,we present a performance analysis of first-order secrecy metrics in 6G-enabled UAV systems,namely hybrid outage probability(HOP)and secrecy outage probability(SOP)over 2×2 Nakagami-m ***,we propose a novel technique for mitigating passive eavesdropping,which considers first-order secrecy metrics as an optimization problem and determines their lower and upper ***,we conduct an analysis of bounded HOP and SOP using the interactive Nakagami-m channel,considering the multiple-input-multiple-output configuration of the UAV *** findings indicate that 2×2 Nakagami-mis a suitable fadingmodel under constant velocity for trustworthy receivers and *** results indicate that UAV mobility has some influence on an eavesdropper’s intrusion during line-of-sight-enabled communication and can play an important role in improving security against passive eavesdroppers.

关键词： Physical layer security 3D positioning 6G communications UAV systems

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An Extensive Study and Review of Privacy Preservation Models for the Multi-Institutional Data

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Journal of Information Security 2023年第4期14卷 343-365页

作者： sagarkumar patel Rachna patel Ashok Akbari Srinivasa Reddy Mukkala Department of Biometrics LabCorp Drug Development Inc. Somerset USA Department of Biometrics Catalyst Clinical Research LLC Wilmington USA Department of Pharmacy Shree Naranjibhai Lalbhai Patel College of Pharmacy Umrakh Surat India Department of Biostatistics EpisData Sterling Heights USA

The deep learning models hold considerable potential for clinical applications, but there are many challenges to successfully training deep learning models. Large-scale data collection is required, which is frequently only possible through multi-institutional cooperation. Building large central repositories is one strategy for multi-institution studies. However, this is hampered by issues regarding data sharing, including patient privacy, data de-identification, regulation, intellectual property, and data storage. These difficulties have lessened the impracticality of central data storage. In this survey, we will look at 24 research publications that concentrate on machine learning approaches linked to privacy preservation techniques for multi-institutional data, highlighting the multiple shortcomings of the existing methodologies. Researching different approaches will be made simpler in this case based on a number of factors, such as performance measures, year of publication and journals, achievements of the strategies in numerical assessments, and other factors. A technique analysis that considers the benefits and drawbacks of the strategies is additionally provided. The article also looks at some potential areas for future research as well as the challenges associated with increasing the accuracy of privacy protection techniques. The comparative evaluation of the approaches offers a thorough justification for the research’s purpose.

关键词： Privacy Preservation Models Multi Institutional Data Bio Technologies Clinical Trial and Pharmaceutical Industry

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An Extensive Study and Review of Privacy Preservation Models for the Multi-Institutional Data

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Journal of Information Security（信息安全） 2023年第4期

作者： sagarkumar patel Rachna patel Ashok Akbari Srinivasa Reddy Mukkala

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Modelling, Transient Simulation and Economic Analysis of Solar Thermal Based Air Conditioning System in Gujarat

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Smart Grid and Renewable Energy 2016年第8期7卷 233-246页

作者： Ganesh Utham sagarkumar M. Agravat Bela Jani Jignasha Bhutka School of Mechanical and Building Science VIT University Vellore India Solar R&D Projects Gujarat Energy Research & Management Institute (GERMI) Gandhinagar India 3Gujarat State Electricity Corporation Limited (GSECL) Vadodara India Gujarat State Electricity Corporation Limited (GSECL) Vadodara India Gujarat Energy Research & Management Institute (GERMI) Gandhinagar India

Commercial building sector accounts for 8% of the total electricity consumption in India. Cooling activities (HVAC) in commercial buildings consume 55% of the total energy utilized. Consequently, CO2 emissions from conventional buildings in India were estimated to be 98 metric tonnes of CO2 per million ft2 in 2014. Solar thermal air conditioning can be the solution to these demands and can contribute to about 15% to 20% of India’s total oil consumption thereby reducing the dependence on fossil fuels. Hence, the main objective of the work is to model and simulate a solar absorption cooling system for GERMI office building located in Gandhinagar, Gujarat, India, using the transient simulation software ‘TRNSYS’. Cooling load estimation and comfort conditions required for the building were determined based on ASHRAE standards. Evacuated tube collectors were selected because of its market availability, ease of manufacturing and proven technology. Single effect absorption chiller was used because of its commercial availability. The effects of storage tank volume, collector area and collector slope were also investigated for parametric optimization. The results of the simulation and parametric analysis are analyzed and presented in the paper.

关键词： Solar Air Conditioning Evacuated Tube Collectors (ETC) TRNSYS Simulation Single Effect Absorption Chiller Parametric Analysis India

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Spectroscopic Analysis and Study of Charge Transport Properties for Pinacyanol Chloride-Organic Acceptor Complex as Potential Optoelectronics Material

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American Journal of Analytical Chemistry 2015年第8期6卷 694-707页

作者： sagarkumar M. Agravat Vishal R. Jain Ajay T. Oza Gujarat Energy Research & Management Institute (GERMI) Gandhinagar India Department of Physics S.P. University Vallabh Vidyanagar India

Organic photoconductor, pinacyanol chloride, has been studied with infrared spectroscopy because of its thermal activation energy (Ea) and band gap (Eg = 2Ea) lying in the infrared range. Particularly, pinacyanol chloride and its charge transfer (CT) complexes with chloranil, DDQ, TCNQ and TCNE as organic acceptors are studied in details. The CT complexes are having neither two absorption edges like ternary complex having one donor and two acceptors nor binary type with Lorentzian or Gaussian envelopes. The forbidden gap is direct band gap except chloranil complex due to increase in molecular distance and CT interaction. There is imperfect nesting and partial screening determining the mid-IR envelope, which is qualitatively different from the envelopes in binary systems. There is inverted parabola in some range below this envelope. It is explained how infrared absorption is related with the applications of such organic photoconductors in optoelectronic devices.

关键词： Organic Photoconductors Charge Transfer Complex Pinacyanol Chloride Spectroscopy Optoelectronic Devices Diodes LEDs Solar Cells

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Theoretical Study of Wind Turbine Model with a New Concept on Swept Area

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Energy and Power Engineering 2015年第4期7卷 127-134页

作者： sagarkumar M. Agravat N. V. S. Manyam Sanket Mankar T. Harinarayana Gujarat Energy Research and Management Institute Gandhinagar India Department of Electrical Engineering University of Petroleum and Energy Studies Dehradun India School of Mechanical and Building Sciences Vellore Institute of Technology Vellore India

Commercially available wind-turbines are optimized to operate at certain wind velocity, known as rated wind velocity. For other values of wind velocity, it has different output which is lower than the rated output of the wind plant. Wind mill can be designed to provide maximum power output at different wind velocities through modification of swept area to match with the wind speed available at the moment. This can result in higher power output at all the velocities except that at rated wind speed because of limitation of generator. This results in increased utilization of generation capacity of wind mill compared to its commercially designed counterpart. A theoretical simulation has been done to prove a new concept about swept area of wind turbine blade which results in a significant increase in the power output through the year. Simulation results of power extracted through normal wind blade design and new concept are studied and compared. The findings of the study are presented in graphical and tabular form. Study establishes that there can be a significant gain in the power output with the new concept.

关键词： Cut-In Wind-Speed Cut-Out Wind-Speed CUF Swept Area Radius Chord Aerofoil Axial Flow Induction Factor Inflow Factor Actuator Disc Concept Momentum Theory

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