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arXiv 2022年

作者： Rathee, Geetanjali Ahmad, Farhan Jaglan, Naveen Konstantinou, Charalambos The Department of Computer Science and Engineering Netaji Subhas University of Technology Dwarka Sector-3 New Delhi India The Systems Security Group Centre for Future Transport and Cities Coventry University Warwickshire CV1 5FB United Kingdom The Department of Electronics and Communication Engineering Jaypee University of Technology Waknaghat 173234 India Thuwal 23955-6900 Saudi Arabia

Industrial Internet-of-Things (IIoT) is a powerful IoT application which remodels the growth of industries by ensuring transparent communication among various entities such as hubs, manufacturing places and packaging units. Introducing data science techniques within the IIoT improves the ability to analyze the collected data in a more efficient manner, which current IIoT architectures lack due to their distributed nature. From a security perspective, network anomalies/attackers pose high security risk in IIoT. In this paper, we have addressed this problem, where a coordinator IoT device is elected to compute the trust of IoT devices to prevent the malicious devices to be part of network. Further, the transparency of the data is ensured by integrating a blockchain-based data model. The performance of the proposed framework is validated extensively and rigorously via MATLAB against various security metrics such as attack strength, message alteration, and probability of false authentication. The simulation results suggest that the proposed solution increases IIoT network security by efficiently detecting malicious attacks in the network. Copyright © 2022, The Authors. All rights reserved.

关键词： Blockchain

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Identification of the most efficient algorithm to find Hamiltonian Path in practical conditions

Identification of the most efficient algorithm to find Hamil...

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International Conference on Confluence The Next Generation Information technology Summit (Confluence)

作者： Karanjot Singh Simran Kaur Bedi Prerna Gaur Department of Instrumentation and Control Engineering Netaji Subhas Institute of Technology New Delhi India

ISBN: (数字)9781728127910

ISBN: (纸本)9781728127927

Travelling Salesman Problem (TSP) is a real-world Non-deterministic polynomial-time hard - combinatorial optimization problem. Given several points (cities) to be visited, the objective of the problem is to find the shortest possible route (called Hamiltonian Path) that visits each point exactly once and returns back to the starting point. Several exact, approximate and heuristic algorithms have been proposed to solve the TSP. The objective of this paper is to compare 10 such different algorithms on the basis of cost of the path found and time taken to find that solution in order to identify an algorithm which works most efficiently and thus, can be used in practical scenarios. Therefore, the comparative analysis has been made without time constraints as a preliminary test and then with a constraint of 1 second to determine the most efficient algorithm. This algorithm was then used at the core of the web-based tool (a practical use case) developed for release in public domain which helps users find an optimal round-trip route (i.e. Hamiltonian Path) among the points marked on the map. Google Maps API was used for providing map interface and obtaining real-time distance/duration data (matrix) in the web-application front end.

关键词： Conferences Cloud computing Data science

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Estimation of Parameters in Fractional order Financial Chaotic system with Nature Inspired Algorithms

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Procedia computer Science 2020年 173卷 18-27页

作者： Sangeeta Gupta Gaurava Gautam Deepak Divyanshu Vats Pragya Varshney Smriti Srivastava Department of Instrumentation and Control Engineering Netaji Subhas Institute of Technology Dwarka Sec-3 New Delhi -110078 India

Chaotic system parameter modeling is one of the significant topics in the field of non-linear science and therefore has attracted the attention of many researchers in this field. This paper discusses parameter recognition of Fractional Order Financial Chaotic System by employing different metaheuristic algorithms. The implemented algorithms include Artificial bee colony, Grey wolf optimizer, Whale optimization algorithm and Ant colony optimizer. Mean Square Error is employed as objective function to estimate parameters of system under consideration. Results of optimized parameters using the above-mentioned optimization are compared with each other and discussed in the paper. The overall outcome shows that Whale optimization algorithm gives more accurate and robust results with higher convergence rate as compared with other algorithms.

关键词： Optimization Techniques Fractional Calculus Fractional Order Fractional Order Financial Chaotic system Whale Optimization Algorithm Ant colony optimization Grey wolf optimization Artificial bee colony optimization

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Wideband High Gain Active Feedback Transimpedance Amplifier

Research Square

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Research Square 2021年

作者： Singh, Preeti Gupta, Maneesha Aggrawal, Bhawna Rai, Shireesh Kumar Faculty of Technology University of Delhi New Delhi110078 India Division of Electronics and Communication Engineering Netaji Subhas University of Technology New Delhi110078 India Electronics and Communication Engineering Department Thapar Institute of Engineering and Technology Punjab Patiala147004 India

This paper presents a new wideband high gain CMOS transimpedance amplifier without using any inductor. In the proposed TIA, gain enhancing path is introduced in the active voltage-current feedback TIA topology to increase both the gain and bandwidth. This path increases the transconductance of the proposed TIA which reduces the input resistance and leads to bandwidth extension. Additionally, for utilizing the benefit of this topology, cascading of common source stage is also done to increase the gain further without deteriorating the bandwidth. Mathematical analysis is also performed to evaluate both the gain and bandwidth enhancement. These analyses are supported by simulations that are done using TSMC 180 nm CMOS technology with the input photodiode capacitance of 0.3 pF. The proposed TIA occupies 0.019 mm2 area and consumes 3.2 mW from the power supply of 1.8 V. Simulation results show that the transimpedance gain of the proposed TIA is 57.15 dBΩ over the bandwidth of 6.5 GHz. The input noise is 17.16 pA/√Hz. © 2021, CC BY.

关键词： Operational amplifiers

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Observational constraints and cosmographic analysis of f(T,TG) gravity and cosmology

arXiv

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arXiv 2023年

作者： Balhara, Harshna Singh, J.K. Shaily Saridakis, Emmanuel N. Department of Mathematics Netaji Subhas University of Technology New Delhi110 078 India School of Computer Science Engineering and Technology Bennett University Greater Noida India National Observatory of Athens Lofos Nymfon Athens11852 Greece CAS Key Laboratory for Research in Galaxies and Cosmology University of Science and Technology of China Anhui Hefei230026 China Departamento de Matemáticas Universidad Católica del Norte Avda. Angamos 0610 Casilla Antofagasta1280 Chile

We perform observational confrontation and cosmographic analysis of f(T, TG) gravity and cosmology. This higher-order torsional gravity is based on both the torsion scalar, as well as on the teleparallel equivalent of the Gauss-Bonnet combination, and gives rise to an effective dark-energy sector which depends on the extra torsion contributions. We employ observational data from the Hubble function and Supernova Type Ia Pantheon datasets, applying a Markov Chain Monte Carlo sampling technique, and we provide the iso-likelihood contours, as well as the best-fit values for the parameters of the power-law model. Additionally, we reconstruct the effective dark-energy equation-of-state parameter, which exhibits a quintessence-like behavior, while in the future the Universe enters into the phantom regime before it tends asymptotically to the cosmological constant value. Furthermore, we perform a detailed cosmographic analysis, examining the deceleration, jerk, snap, and lerk parameters, showing that the transition to acceleration occurs in the redshift range 0.53 tr © 2023, CC BY.

关键词： Markov chains

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Preface

Lecture Notes in Mechanical Engineering

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Lecture Notes in Mechanical engineering 2024年 v-vi页

作者： Singh, Achhaibar Mishra, Debi Prasad Bhat, Ganapathi Department of Mechanical Engineering Netaji Subhas University of Technology Delhi New Delhi India National Institute of Technical Teachers’ Training and Research Kolkata West Bengal Kolkata India Department of Aerospace Engineering Indian Institute of Technology Bombay Maharashtra Mumbai India

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PHOTOGENIC-A Tool for Best Photo Generation from Multiple Group Photographs 4

PHOTOGENIC-A Tool for Best Photo Generation from Multiple Gr...

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4th International Conference on Information Systems and computer Networks, ISCON 2019

作者： Singh, Karanjot Agarwal, Saurabh Sharma, Deepak Netaji Subhas Institute of Technology Department of Instrumentation and Control Engineering New Delhi India ASET AUUP Department of Computer Science and Engineering Noida India

ISBN: (纸本)9781728136516

Cameras play an important role in capturing precious moments of people's lives in a photograph that can be seen and cherished by them or by their loved ones any time in their lives. This makes it imperative to have a perfect photograph which can describe that moment well. However, it is very difficult to time and capture a group photograph where everyone is looking their best. There are instances when multiple group photos are taken but in one of the photographs a particular person might have his/her eyes open and is smiling whereas someone else's eyes are closed because he/she was blinking. However, in another photograph that person has his/her eyes closed or is not smiling but rest of the people look good. Whatever the case may be, it becomes very difficult to have one perfect group photograph. Thus, if we can pick and blend the good facial features of each person from these multiple photos and merge into a single photo, we can get a better resultant group photograph with the best of their facial features in it. To do this, one could use softwares like Abode Photoshop or other such image editing tools. However, it requires the user to be well versed with that software and demands a lot of effort and user's valuable time to correct the photographs. To make this process easy and better, we have developed a tool that uses OpenCV at its core and follows a sequence of steps for generating the best photograph out of multiple group photographs clicked at a particular instance. By using this tool one can effortlessly get the best group photograph where everyone is smiling with their eyes open. © 2019 IEEE.

关键词： Face recognition

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Mathematical analysis of the effect of process parameters on angular distortion of MIG welded stainless steel 202 plates by using the technique of response surface Methodology

Mathematical analysis of the effect of process parameters on...

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2019 Advances in Minerals, Metals, Materials, Manufacturing and Modelling, ICAM5 2019

作者： Pandit, Mayank Sood, Shruti Mishra, Prithu Khanna, Pradeep Department of Manufacturing Processes and Automation Engineering Netaji Subhas Institute of Technology New Delhi 110078 India

Gas Metal Arc Welding (GMAW) is a widely used semi-automated joining process used in metal fabrication and for producing good quality welds with high deposition rate. The process is versatile because of its ability to weld in all positions and the suitability of wide range of metals and alloys with compatible filler wire to get welded. The process further can be fully automated by using programmable robots thus making it suitable for mass production. Like other fusion welding processes, because of rapid heating and cooling cycles, various types of distortions are encountered, which are detrimental to the performance of the weld. Out of various kinds of distortions, the angular one is found to be prominent. This distortion once occurred require considerate amount of post-welding rectifications and creates design related issues because of the mismatch in the assembly. Therefore, the endeavour should be to keep this distortion minimum by selecting the weld parameters optimally. The present investigative work aims to study the effect of different individually controllable input parameters like wire feed rate, welding speed, voltage, standoff distance and torch angle on the resulting angular distortion of Stainless Steel 202 plates. SS 202 is manganese alloyed austenitic stainless steel, which is designed as a cost-effective alternative to 304 grades with similar corrosion and mechanical properties at lower temperatures and less harsh corrosive environment. By the use of statistical approach, an attempt has been made to develop a mathematical model that relates these input parameters to the response parameter which is angular distortion. This model would prove to be helpful in predicting the resulting angular distortion at different combinations of input parameters. Statistical technique of central composite face centred design has been used to develop the model and ANOVA is used to check the adequacy of the same. Response Surface Methodology (RSM) has been used to analy

关键词： Gas metal arc welding

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Recommending researchers in machine learning based on author-topic model

arXiv

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arXiv 2021年

作者： Sharma, Deepak Kumar, Bijendra Chand, Satish Department of Computer Engineering Netaji Subash Institute of Technology New Delhi India School of Computer & Systems Sciences Jawaharlal Nehru University New Delhi India

The aim of this paper is to uncover the researchers in machine learning using author-topic model (ATM). We collect 16,855 scientific papers from six top journals in the field of machine learning published from 1997 to 2016 and analyze them using ATM. The dataset is broken down into 4 intervals to identify the top researchers and find similar researchers using their similarity score. The similarity score is calculated using Hellinger distance. The researchers are plotted using t-SNE, which reduces the dimensionality of the data while keeping the same distance between the points. The analysis of our study helps the upcoming researchers to find the top researchers in their area of *** Codes H.4, I.7 Copyright © 2021, The Authors. All rights reserved.

关键词： Statistics

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Preface

Lecture Notes in Mechanical Engineering

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Lecture Notes in Mechanical engineering 2024年 v-vi页

作者： Singh, D.K. Hegde, Shriram Mishra, Ashutosh Department of Mechanical Engineering Netaji Subhas University of Technology Delhi New Delhi India Department of Applied Mechanics Indian Institute of Technology Delhi Delhi New Delhi India Department of Applied Mechanics Motilal Nehru National Institute of Technology Allahabad Uttar Pradesh Prayagraj India

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