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International Conference on Newer trends and Innovations in Mechanical engineering, ICONTIME 2020

作者： Ramasubramanian, S. Kumar, S. Santhosh Karikalan, L. Baskar, S. Department of Automobile Engineering VELS Institute of Science Technology and Advanced Studies Pallavaram Chennai600117 India

The project works deal with the bio-diesel which formed from the Mahua oil by esterifications and follow by the transesterifications. The kinetic study of optimizes the research of Mahua oil Methyl Ester was taken at various parameters as methanol % of surplus alcohol, reactions time and oil molar ratio, concentrations of acid channel and temperature. The output shows that the 4.2% H2SO4, 0.35% alcohol ratio, 1.15 h reactions time and the temperature of 60 0C is optimal condition to the esterifications. The most favorable condition to the production of the bio-diesel is 2.2% sodium Methoxide, 0.1% alcohol oil ratio, 1.15 h reactions time, 60 0C of temperature and 140% excess alcohol the best condition to the tranesterifications. In this work, the investigation is taken to revision then performances, emissions and combustions properties of mahua Methyl ester. The output was checked by diesel and chosen mahua methyl ester as fuel blend. The setup having single cylinder forced water cooled C.I engine is utilized. At first, engine is run by methyl ester mixed by the volume basis and the corresponding reading is taken. The results are taken entire series of engine operations for different load condition. The performance parameters of engine are like SFC, exhaust gas emissions, break thermal efficiency were cheap with raise in biodiesel concentrations. © 2020 Elsevier Ltd. All rights reserved.

关键词： Biodiesel

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Precursory study on varieties of DDoS attacks and its implications in Cloud Systems 3

Precursory study on varieties of DDoS attacks and its implic...

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3rd International Conference on Trends in Electronics and Informatics, ICOEI 2019

作者： Ribin, Jones S.B. Kumar, N. Dept. of Computer Science and Engineering Vels Institute of Science Technology and Advanced Studies Chennai India

ISBN: (纸本)9781538694398

Cloud Computing has emerged into an inevitable platform for computing services by effectively implementing Service Oriented Architecture (SOA) and Virtualization. However it is still vulnerable to traditional security threats and offers scope for innovative security attacks such as EDoS [1]. While it offers platform to generate innumerable Virtual components from a single physical component, it inadvertently provides wide spectrum of possibilities for distributed attacks. Moreover such attacks have adapted to cloud platform and have exploited various inherent vulnerabilities. In an unprecedented manner, they became unpredictable, evasive and challenging to Cloud Security measures. Therefore various versions of DDoS attack that targets the cloud platform have been extensively researched and narrated. The Cloud Security faces unprecedented challenges such as the Single-point-of-Failure occurs when a Cloud Supervisory Component or hypervisor fails due to a security breach. Moreover Cloud requirements often require being liberal to meet the Clients needs. This does not help the CSP to adapt traditional stringent security measures in Cloud System the reasons have been discussed in details. © 2019 IEEE.

关键词： Cloud security

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Optimizing EV Performance using Cascaded ANFIS based MPPT for High Gain Sepic-Zeta Converter

Optimizing EV Performance using Cascaded ANFIS based MPPT fo...

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2023 International Conference on Sustainable Communication Networks and Application, ICSCNA 2023

作者： Indira Kumar, A. Janaki, N. Vels Institute of Science Technology & Advanced Studies Department of Electrical and Electronics Engineering Chennai600117 India

ISBN: (纸本)9798350313987

Electric vehicles (EVs) acts an essential role in the decarbonization of transportation and overall efforts to reduce greenhouse gas emissions. EV creates zero tailpipe emissions, as they are powered by electricity rather than fossil fuels. This directly contributes to reducing local air quality improvement, particularly in metropolitan areas, and contaminants in the air where emissions from conventional vehicles are a significant concern. This paper presents a novel approach for optimizing EV performance by employing a cascaded ANFIS based MPPT technique in conjunction with a high-gain SEPIC-Zeta converter. The proposed high gain converter offers advantages such as high voltage gain, reduced input current ripple and improved voltage conversion efficiency. The cascaded architecture of the ANFIS-based MPPT technique provides enhanced tracking accuracy, robustness and adaptability to varying environmental factors including temperature changes and sun irradiation. By dynamically adjusting the operating point of the PV array, the system ensures that the EV battery receives the maximum available power from the PV source, resulting in increased energy harvesting efficiency. The optimized power conversion process achieved through the cascaded ANFIS-based MPPT and high-gain SEPIC-Zeta converter contributes to the advancement of EV technologies, promoting sustainable and efficient transportation systems. © 2023 IEEE.

关键词： ANFIS EV MPPT PV SEPIC-Zeta Converter

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A smart study on medicinal plants identification and classification using image processing techniques 3

A smart study on medicinal plants identification and classif...

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3rd International Conference on Intelligent Communication Technologies and Virtual Mobile Networks, ICICV 2021

作者： Pukhrambam, Banita Rathna, R. Vels Institute of Science Technology Advanced Studies Dept. of Computer Science and Engineering Chennai India

ISBN: (纸本)9780738111834

Plants play an important role in human life for providing oxygen, food, housing, medicine, energy, housing, and environmental protection. Plants are rich in medicinal esteem and contain dynamic elements for medicinal use because of the global warming populace, lack of expert help for research, lack of government upholding research exercises, and familiarity with medicinal plants. Numerous utility plants are getting pulverized. Manual identification of plants requires significant investment and requires the identification of plants with the help of experts. To address this issue, individuals need to acquire a more prominent advantage in robotized identification and medicinal plant classification. The research region's image process field is dynamic in the automatic identification and classification of medicinal plants. Feature extraction and classification are the important developments in identifying medicinal plants that affect the overall accuracy of the system for scientific categorization. This research examines recent methods of image processing for the classification of medicinal plants. © 2021 IEEE.

关键词： Housing

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Cu-β-CD-catalyzed Csp-P coupling of alkynes with dialkylphosphites and phosphine oxides

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Organic & biomolecular chemistry 2025年 2025 May 20页

作者： Babak Kaboudin Elahe Yousefian Amirkhiz Ali Sabzalipour Fahimeh Varmaghani Tianjian Zhang Yanlong Gu Department of Chemistry Institute for Advanced Studies in Basic Sciences Gava Zang Zanjan Iran. kaboudin@iasbs.ac.ir. School of Chemistry and Chemical Engineering Huazhong University of Science & Technology Wuhan 430074 China.

In this study, an easily accessible Cu-β-CD complex has been introduced for C-P cross-coupling reactions. The Cu-β-CD complex was used to catalyze the C-P coupling of alkynes with both dialkylphosphites and phosphinoxides for the synthesis of alkynyl-phosphonates and -phosphinoxides. The results showed that the coupling reactions could be carried out with appropriate yields for both aryl and alkyl alkynes. The applicability of Cu-β-CD for the oxidative decarboxylative coupling of phenylpropiolic acid with dialkyl phosphites and diphenylphosphine oxide was also studied. XPS and cyclic voltammetry analysis of the catalyst confirmed the presence of both Cu(I) and Cu(II) in the complex structure. The reaction proceeded the oxidative addition of dialkyl phosphites and alkynes to the catalyst, and the final C-P cross-coupling product was obtained by a reductive elimination process. The presented catalytic method allows the easier and more cost-efficient cross-coupling of alkynes with dialkylphosphites and phosphine oxides under mild and base-free conditions.

关键词： Catalysis

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Experimental investigation of high carbon steel MMC for crown pinion gear

Experimental investigation of high carbon steel MMC for crow...

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作者： Charles Godwin, R. Dhanasekaran, C. Department of Mechanical Engineering Vels Institute of Science Technology & Advanced Studies Tamilnadu Chennai600117 India

The implementation of high carbon steel composite is growing continuously in the field of automotive and manufacturing industries because of their superior physical, mechanical and tribological properties as compared to normal steel. In automobiles, the differential plays major role to power transmission from engine to wheel. However, failure of crown pinion observed that the gear teeth have been sheared off by heat failure and edge of pinion gear is worn down caused by lubricant failure. So, this high carbon steel composite (high carbon steel + silicon carbide) could be proposed for crown pinion gear to control material wear and fracture. In this paper, the various proportions of high carbon steel composites were investigated and evaluated the characteristics of material hardness, compressive strength and material wear. The material proportions were 100–0 %, 99–1 % and 97.5–2.5 % of high carbon steel with silicon carbide. By observing experimental results, the high carbon steel with 2 % of silicon carbide have better material characteristics than other proportions and this also suggested to crown pinion gear production. © 2022

关键词： Powder metallurgy

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Recognition of Deep Fake Voice Acoustic using Ensemble Bagging Model 5

Recognition of Deep Fake Voice Acoustic using Ensemble Baggi...

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5th International Conference on Electronics and Sustainable Communication Systems, ICESC 2024

作者： Basha, Shaik Abdul Yunus Priya, K.Ulaga Vels Institute of Science Technology & Advanced Studies Department of Computer Science and Engineering Tamilnadu Chennai India

ISBN: (纸本)9798350379945

As artificial speech generates technological evolution;fake voice information has become an increasingly prevalent avenue for fraud. Numerous investigations have been carried out into machine learning techniques, signal processing techniques, and the Automatic Speaker Verification System to address such issues. Since there are increasing methods to create fake information, techniques must be developed to determine when audio recordings employed as electronic proof are corrupted. Such recordings contain the potential to be manipulated. Hence, this research work identified the data regarding audio systems as either fake or real by i) extracting features from audio file metadata using oversampling techniques and ii) Developing an Ensemble Bagging Model appropriate for analyzing input audio signal followed by classification of fake (fraudulent) and real (authentic) audio. Our experimental results reveal that the ensemble bagging model attained an accuracy of 99.5%, precision of 99%, 99.6% recall, and 99.9% Fl-measure in the prediction of the audio system compared with traditional approaches. © 2024 IEEE.

关键词： Audio recordings

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Protection of Hazardous Places in Industries using Machine Learning 5

Protection of Hazardous Places in Industries using Machine L...

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5th International Conference on Emerging Smart Computing and Informatics, ESCI 2023

作者： Sankarasubramanian, Praveen Vels Institute of Science Technology and Advanced Studies Computer Science and Engineering Tamil Nadu Chennai India

ISBN: (纸本)9781665475242

Extreme precautions must be observed to handle toxic wastes, radioactive substances, chemical raw materials, chemical wastes, and bio-products in different industries. Any malfunction in a dangerous traffic network can lead to serious accidents, deaths and / or serious damage. Direct monitoring and analysis, and preventive measures to prevent the spread of failures, can significantly reduce the recurrence of adverse effects. Current research suggests that detailed publicity and information on the latest developments in pipeline monitoring and research may help modernize the oil industry in the future. We also propose a framework to detect timely leakage in pipelines, especially in oil and gas sector. © 2023 IEEE.

关键词： Toxic materials

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Thermal drilling processing on sheet metals: A review

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International Journal of Lightweight Materials and Manufacture 2019年第3期2卷 193-205页

作者： Kumar, R. Jesudoss Hynes, N. Rajesh Department of Mechanical Engineering Vels Institute of Science Technology & Advanced Studies Pallavaram ChennaiTamil Nadu600117 India Department of Mechanical Engineering Mepco Schlenk Engineering College SivakasiTamil Nadu626005 India

Thermal drilling is a sheet metal hole making technique and which is the most cost-effective and extremely high productivity technique in sheet metal fastenings. Especially, the fastening or joining of sheet metals is generally used in all manufacturing and industrial applications. But, by reason of thin sheet metal thickness, these fastenings are seen as a tremendously big problem in production. Different traditional methods are available such as welding of a nut to sheet metal, insert rivet & swelling nuts in the drilled hole, which is generally employed for the applications of screw fastening in order to produce a safe and secure screw fastening situation. Those methods revealed some undesirable effects like lifting & twisting of rivets and nuts, thermal distortion at the welding of nut. These difficulties are entirely eliminated in the thermal drilling process. In this review, the basic working principle of the thermal drilling process, merits, the described experimental setup, used thermal drill tools and different applications for various sheet metals are stated clearly. © 2019 The Authors

关键词： Cost effectiveness

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Portable and wearable self-powered systems based on emerging energy harvesting technology

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Microsystems & Nanoengineering 2021年第2期7卷 21-34页

作者： Chen Xu Yu Song Mengdi Han Haixia Zhang Academy for Advanced Interdisciplinary Studies Peking UniversityBeijingChina National Key Laboratory of Science and Technology on Micro/Nano Fabrication Institute of MicroelectronicsPeking UniversityBeijingChina Department of Biomedical Engineering College of Future TechnologyPeking UniversityBeijingChina

A self-powered system based on energy harvesting technology can be a potential candidate for solving the problem of supplying power to electronic devices. In this review, we focus on portable and wearable self-powered systems, starting with typical energy harvesting technology, and introduce portable and wearable self-powered systems with sensing functions. In addition, we demonstrate the potential of self-powered systems in actuation functions and the development of self-powered systems toward intelligent functions under the support of information processing and artificial intelligence technologies.

关键词： functions. starting harvesting

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