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Many-body potential for simulating the self-assembly of polymer-grafted nanoparticles in a polymer matrix

npj Computational Materials 2023年第1期9卷 71-84页

作者： Yilong Zhou Sigbjørn Løland Bore Andrea R.Tao Francesco Paesani gaurav arya Department of Mechanical Engineering and Materials Science Duke UniversityDurhamNC 27708USA Materials Science Division Lawrence Livermore National LaboratoryLivermoreCA 94550USA Department of Chemistry and Biochemistry University of CaliforniaSan DiegoLa JollaCA 92093USA Department of Chemical and NanoEngineering University of CaliforniaSan DiegoLa JollaCA 92023USA

Many-body interactions between polymer-grafted nanoparticles(NPs)play a key role in promoting their assembly into low-dimensional structures within polymer melts,even when the particles are spherical and isotropically ***,capturing such interactions in simulations of NP assembly is very challenging because explicit modeling of the polymer grafts and melt chains is highly computationally expensive,even using coarse-grained ***,we develop a many-body potential for describing the effective interactions between spherical polymer-grafted NPs in a polymer matrix through a machine-learning *** approach involves using permutationally invariant polynomials to fit two-and three-body interactions derived from the potential of mean force *** potential developed here reduces the computational cost by several orders of magnitude,thereby,allowing us to explore assembly behavior over large length and time *** show that the potential not only reproduces previously known assembled phases such as 1D strings and 2D hexagonal sheets,which generally cannot be achieved using isotropic two-body potentials,but can also help discover interesting phases such as networks,clusters,and *** demonstrate how each of these assembly morphologies intrinsically arises from a competition between two-and three-body *** approach for deriving many-body effective potentials can be readily extended to other colloidal systems,enabling researchers to make accurate predictions of their behavior and dissect the role of individual interaction energy terms of the overall potential in the observed behavior.

关键词： grafted polymer potential

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LSTM Based Neural Network Model for Anomaly Event Detection in Care-Independent Smart Homes

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Computer Modeling in Engineering & Sciences 2024年第9期140卷 2689-2706页

作者： Brij B.Gupta Akshat gaurav Razaz Waheeb Attar Varsha arya Ahmed Alhomoud Kwok Tai Chui Department of Computer Science and Information Engineering Asia UniversityTaichung413TaiwanChina Symbiosis Centre for Information Technology(SCIT) Symbiosis International UniversityPune411057India Center for Interdisciplinary Research University of Petroleum and Energy Studies(UPES)Dehradun248007India Computer Engineering Ronin InstituteMontclairNJ 07043USA Management Department College of Business AdministrationPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Business Administration Asia UniversityTaichung413TaiwanChina Department of Electrical and Computer Engineering Lebanese American UniversityBeirut1102Lebanon Department of Computer Sciences Faculty of Computing and Information TechnologyNorthern Border UniversityRafha91911Saudi Arabia School of Science and Technology Hong Kong Metropolitan University(HKMU)Hong KongChina

This study introduces a long-short-term memory(LSTM)-based neural network model developed for detecting anomaly events in care-independent smart homes,focusing on the critical application of elderly fall *** balances the dataset using the Synthetic Minority Over-sampling Technique(SMOTE),effectively neutralizing bias to address the challenge of unbalanced datasets prevalent in time-series classification *** proposed LSTM model is trained on the enriched dataset,capturing the temporal dependencies essential for anomaly *** model demonstrated a significant improvement in anomaly detection,with an accuracy of 84%.The results,detailed in the comprehensive classification and confusion matrices,showed the model’s proficiency in distinguishing between normal activities and *** study contributes to the advancement of smart home safety,presenting a robust framework for real-time anomaly monitoring.

关键词： LSTM neural networks anomaly detection smart home health-care elderly fall prevention

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Neurological manifestations of hepatitis E virus infection:An overview

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World Journal of Gastroenterology 2021年第18期27卷 2090-2104页

作者： Ashish Kumar Jha gaurav Kumar Vishwa Mohan Dayal Abhay Ranjan arya Suchismita Department of Gastroenterology Indira Gandhi Institute of Medical SciencesPatna 800014India Department of Neurology Indira Gandhi Institute of Medical SciencesPatna 800014India Department of Pediatric Hepatology Institute of Liver and Biliary SciencesBasant Kunj 110070New DelhiIndia

Hepatitis E virus(HEV)is an important cause of repeated waterborne outbreaks of acute ***,several extrahepatic manifestations(EHMs)have been described in patients with HEV *** these,neurological disorders are the most common EHM associated with *** involvement of both the peripheral nervous system and central nervous system can occur together or in *** can present with normal liver function tests,which can often be misleading for *** is a paucity of data on HEV-related neurological manifestations;and these data are mostly described as case reports and case *** this review,we analyzed data of 163 reported cases of HEV-related neurological *** mechanisms of pathogenesis,clinico-demographic profile,and outcomes of the HEV-related neurological disorders are described in this *** root and plexus disorder were found to be the most commonly reported disease,followed by meningoencephalitis.

关键词： Hepatitis E virus Acute hepatitis E Extrahepatic manifestations Neurological manifestations Neuralgic amyotrophy Guillain-Barrésyndrome

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Feedback Reliability Ratio of an Intrusion Detection System

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Journal of Information Security 2012年第3期3卷 238-244页

作者： Usha Banerjee gaurav Batra K. V. arya Department of Computer Science and Engineering College of Engineering Roorkee (COER) Roorkee India Department of ICT Atal Bihari Vajpayee Indian Institute of Information Technology and Management Gwalior India

The behavior and nature of attacks and threats to computer network systems have been evolving rapidly with the advances in computer security technology. At the same time however, computer criminals and other malicious elements find ways and methods to thwart such protective measures and find techniques of penetrating such secure systems. Therefore adaptability, or the ability to learn and react to a consistently changing threat environment, is a key requirement for modern intrusion detection systems. In this paper we try to develop a novel metric to assess the performance of such intrusion detection systems under the influence of attacks. We propose a new metric called feedback reliability ratio for an intrusion detection system. We further try to modify and use the already available statistical Canberra distance metric and apply it to intrusion detection to quantify the dissimilarity between malicious elements and normal nodes in a network.

关键词： Attacks Canberra Metric Feedback Intrusion Detection Performance Reliability

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Complexities of practicing architectural regionalism in India:An interview study

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Frontiers of Architectural Research 2020年第3期9卷 568-578页

作者： Sanyam Bahga gaurav Raheja Department of Architecture and Planning Indian Institute of Technolosy RoorkeeRoorkeeIndia

This paper presents the results and analysis from an interview study conducted with practitioners of architectural regionalism in *** interviews sought to gain indepth understanding of the strategies,mechanisms,and tools they employ to realize contextualized architecture that responds to local needs and potential.A sample composed of nine eminent Indian architects who regularly integrate the ideas of critical regionalism in their designs is selected and subsequently interviewed with regard to the varied aspects of their architectural *** are useful for practitioners and scholars of contemporary architecture in India for understanding the means employed by leading regionalist architects,while placing their work in the context of local building traditions,urban landscape,sociocultural conditions,technology,and climate.

关键词： Architectural regionalism Critical regionalism Indian architecture Architects’interviews Semi-structured interviews Architecture practice

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