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Federated Learning on Internet of Things:Extensive and Systematic Review

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Computers, Materials & Continua 2024年第5期79卷 1795-1834页

作者： Meenakshi Aggarwal Vikas Khullar Sunita Rani Thomas AndréProla Shyama Barna bhattacharjee Sarowar Morshed Shawon Nitin Goyal Chitkara University Institute of Engineering and Technology Chitkara UniversityRajpuraPunjab140401India Department of CSE&IT BPS Mahila VishwavidyalayaKhanpur KalanSonipatHaryana131305India Engineering Research&Innovation Group Universidad Europea del AtlánticoC/Isabel Torres 21Santander39011Spain Department of Project Management Universidad Internacional IberoamericanaAreciboPR00613USA Department of Project Management Universidade Internacional do CuanzaEstrada Nacional 250Bairro KaluapandaCuito-BiéAngola Department of Computer Science and Engineering University of Science and Technology Chittagong(USTC)Chattogram4202Bangladesh Deptartment of EEE University of Science and Technology Chittagong(USTC)Chattogram4202Bangladesh Department of Computer Science and Engineering School of Engineering and TechnologyCentral University of HaryanaMahendragarhHaryana123031India

The proliferation of IoT devices requires innovative approaches to gaining insights while preserving privacy and resources amid unprecedented data ***,FL development for IoT is still in its infancy and needs to be explored in various areas to understand the key challenges for deployment in real-world *** paper systematically reviewed the available literature using the PRISMA guiding *** study aims to provide a detailed overview of the increasing use of FL in IoT networks,including the architecture and challenges.A systematic review approach is used to collect,categorize and analyze FL-IoT-based *** was performed in the IEEE,Elsevier,Arxiv,ACM,and WOS databases and 92 articles were finally *** measures were published in English and with the keywords“FL”and“IoT”.The methodology begins with an overview of recent advances in FL and the IoT,followed by a discussion of how these two technologies can be *** be more specific,we examine and evaluate the capabilities of FL by talking about communication protocols,frameworks and *** then present a comprehensive analysis of the use of FL in a number of key IoT applications,including smart healthcare,smart transportation,smart cities,smart industry,smart finance,and smart *** key findings from this analysis of FL IoT services and applications are also ***,we performed a comparative analysis with FL IID(independent and identical data)and non-ID,traditional centralized deep learning(DL)*** concluded that FL has better performance,especially in terms of privacy protection and resource *** is excellent for preserving privacy becausemodel training takes place on individual devices or edge nodes,eliminating the need for centralized data aggregation,which poses significant privacy *** facilitate development in this rapidly evolving field,the insights presented are intended to help practitioners and re

关键词： Internet of Things federated learning PRISMA framework of FL applications of FL data privacy communication

腙基席夫碱配体铜(Ⅱ)配合物的合成、结构表征、生物活性和密度泛函理论计算

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无机化学学报 2024年第7期40卷 1409-1422页

作者： bhattacharjee Maitri Boruah Smriti Rekha Dutta Purkayastha R.N. Maniukiewicz Waldemar Chowdhury Shubhamoy Maiti Debasish Akhtar Tamanna Department of Chemistry Tripura UniversitySuryamaninagar‑799022TripuraIndia Institute of General and Ecological Chemistry Lodz University of TechnologyZeromskiego 11690‑924ŁódzPoland Department of Chemistry University of GourbangaMokdumpurMaldaWest Bengal‑732103India Department of Human Physiology Tripura UniversitySuryamaninagar‑799022TripuraIndia

以甲醇为介质,合成了3种新的席夫碱配体HL^(1)(2-hydroxybenzaldehyde2-(2-oxo-1,2-diphenylethylidene)hydrazone)、HL^(2)(4-hydroxybenzaldehyde2-(2-oxo-1,2-diphenylethylidene)hydrazone)和L^(3)(2-methoxybenzaldehyde2-(2-oxo-1,2-diphenylethylidene)hydrazone)的Cu(Ⅱ)配合物1-3。通过元素分析、光谱方法、磁化率测量和密度泛函理论(DFT)计算对配合物进行了表征。通过单晶X射线衍射研究对合成的配体进行了结构表征。通过DFT计算确定了配合物的优化结构。通过紫外可见吸收光谱和荧光发射光谱研究了配合物与小牛胸腺DNA(CT-DNA)的结合能力。吸收光谱研究揭示了增色效应,并提出了与CT-DNA相互作用的可能模式。溴化乙锭(EB)竞争结合研究表明,配合物可以取代DNA-EB加合物中的DNA,且配合物可能以嵌入模式与CTDNA结合。配合物对革兰氏阴性肺炎克雷伯菌、大肠杆菌、鲍氏志贺菌和革兰氏阳性金黄色葡萄球菌的体外抗菌活性研究表明,配合物2对肺炎克雷伯菌和鲍氏志贺菌具有明显抗菌活性,但配合物1和3没有表现出任何显著的抗菌活性。

关键词： Cu(Ⅱ)配合物席夫碱结构生物活性密度泛函理论

An HESS Based on a Modified MMCC-TSBC Converter Integrating Energy Storages

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CSEE Journal of Power and Energy Systems 2023年第5期9卷 1698-1709页

作者： Prabir Ranjan Kasari Subhadeep bhattacharjee the Department of Electrical Engineering of National Institute of Technology Agartala AgartalaTripura 799046India

This paper presents a modified modular multilevel cascaded converter based on a triple star bridge cell(MMCCTSBC)for integrating different types of energy storage to form a hybrid energy storage system(HESS).The proposed HESS comprises battery energy storage,supercapacitor energy storage and a doubly-fed induction machine(DFIM)based variable speed pump storage(VSPS).Different low-rated energy storage units can be intermixed in this converter to form an *** is possible due to the modular structure of the modified converter and provides an advantage in a high-power energy storage *** validate the performance of HESS,real-time power variation data is accumulated from online sources and a weighted median filter(WMF)is employed for generating appropriate references for battery energy storage system(BESS)and supercapacitor storage to mitigate both low frequency and high-frequency power ***,the control approach permits independent regulation of grid current and DFIM current through the modified MMCC-TSBC *** simulation and experimental results validate the effectiveness of the control scheme for the proposed HESS.

关键词： BESS DFIM MMCC supercapacitor storage,TSBC converter VSPS

Variation and dispersal of PM_(10) and PM_(2.5) during COVID-19 lockdown over Kolkata metropolitan city,India investigated through HYSPLIT model

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Geoscience Frontiers 2022年第1期13卷 285-296页

作者： Biswajit Bera Sumana bhattacharjee Nairita Sengupta Soumik Saha Department of Geography Sidho-Kanho-Birsha UniversityRanchi RoadP.O.Purulia Sainik School723104India Department of Geography Jogesh Chandra Chaudhuri College(University of Calcutta)30Prince Anwar Shah RoadKolkata 700033India Department of Geography Diamond Harbour Women’s UniversitySarisha 743368India M.A. Independent ScholarDepartment of GeographyUniversity of Calcutta35Ballygunge Circular RoadKolkata 700019India

The higher concentration of PM_(10) and PM_(2.5) in the lower atmosphere is severely harmful for human health and it also makes visibility diminution along with weather and climate *** main objective is to find out the spatiotemporal variation and dispersal of PM_(10) and PM_(2.5) along with COVID-19 infection in the dusty city *** consecutive two years PM_(10) and PM_(2.5) data of different stations have been obtained from State Pollution Control Board,*** West *** trajectory analysis has been done through HYSPLIT(Hybrid Single Particle Lagrangian Integrated Trajectory)model to find the path and direction of air *** result showed that the various meteorological or environmental factors(such as temperature,relative humidity,wind,wind speed,pressure and gusty wind)and geographical location regulate the spatiotemporal variation of PM_(10) and PM_(2.5).These factors like high temperature with relative humidity and strong wind influence to disperse the particulate matters from north to south direction from city to outside during summer in Kolkata metropolitan *** summer(both pre and lockdown years),the height of particles is extended up to 1000 m owing to active atmospheric ventilation whereas in winter it is confined within 100 *** HYSPLIT model clearly specified that the particles dispersed from south,south-west to north and north east direction due to strong *** constant magnification of PM_(10) and PM_(2.5) in the lower atmosphere leads to greater frequency of COVID-19 infections and *** Kolkata,the one of the crucial reasons of high infection and deaths(COVID-19)is co-morbidity of people.

关键词： COVID-19 Lockdown Variation Dispersal HYSPLIT model

Transonic Accretion and Winds Around Pseudo-Kerr Black Holes And Comparison with General Relativistic Solutions

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Research in Astronomy and Astrophysics 2022年第3期22卷 157-167页

作者： Abhrajit bhattacharjee Sandip K.Chakrabarti Dipak Debnath Indian Centre for Space Physics 43 ChalantikaGaria Station RoadKolkata 700084India

Spectral and timing properties of accretion flows on a black hole depend on their density and temperature distributions,which in turn come from the underlying ***,an accurate description of the flow which includes hydrodynamics and radiative transfer is a must to interpret the observational *** the case of nonrotating black holes,a pseudo-Newtonian description of surrounding spacetime enables one to make significant progress in predicting spectral and timing *** formalism is lacking for spinning black *** this paper,we show that there exists an exact form of a"natural"potential derivable from the general relativistic(GR)radial momentum *** of this potential in an otherwise Newtonian set of equations allows to describe transonic flows very accurately as is evidenced by comparing with solutions obtained from the full GR *** study the properties of the critical points and the centrifugal pressure supported shocks in the parameter space spanned by the specific energy and angular momentum,and compare with the results of GR *** show that this potential can safely be used for the entire range of Kerr parameter-1

关键词： black hole physics(159) Kerr black holes(886) relativity(1393) hydrodynamics(1963) shocks(2086)

CrysXPP:An explainable property predictor for crystalline materials

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npj Computational Materials 2022年第1期8卷 424-434页

作者： Kishalay Das Bidisha Samanta Pawan Goyal Seung-Cheol Lee Satadeep bhattacharjee Niloy Ganguly Indian Institute of Technology Kharagpur KharagpurIndia Indo Korea Science and Technology Center BangaloreIndia Leibniz University of Hannover HannoverGermany

We present a deep-learning framework,CrysXPP,to allow rapid and accurate prediction of electronic,magnetic,and elastic properties of a wide range of *** lowers the need for large property tagged datasets by intelligently designing an autoencoder,*** important structural and chemical properties captured by CrysAE from a large amount of available crystal graphs data helped in achieving low prediction ***,we design a feature selector that helps to interpret the model’s *** notably,when given a small amount of experimental data,CrysXPP is consistently able to outperform conventional DFT.A detailed ablation study establishes the importance of different design *** release the large pre-trained model *** believe by fine-tuning the model with a small amount of property-tagged data,researchers can achieve superior performance on various applications with a restricted data source.

关键词： materials. property crystalline

Viability of a concentrated solar power system in a low sun belt prefecture

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Frontiers in Energy 2020年第4期14卷 850-866页

作者： Rahul bhattacharjee Subhadeep bhattacharjee Department of Electrical Engineering National Institute of Technology(NIT)AgartalaTripura Pin-799046India

Concentrating solar power(CSP)is considered as a comparatively economical,more efficient,and large capacity type of renewable energy ***,CSP generation is found restricted only to high solar radiation belt and installed where high direct normal irradiance is *** paper examines the viability of the adoption of the CSP system in a low sun belt region with a lower direct normal irradiance(DNI).Various critical analyses and plant economics have been evaluated with a lesser DNI *** obtained results out of the designed system,subjected to low DNI are not found below par,but comparable to some extent with the performance results of such CSP plants at a higher *** analysis indicates that incorporation of the thermal energy storage reduces the levelized cost of energy(LCOE)and augments the plant capacity *** capacity factor,the plant efficiency,and the LCOE are found to be 32.50%,17.56%,and 0.1952$/kWh,respectively.

关键词： concentrated solar power direct normal irradiance plant performance plant economics thermal energy storage

Dynamical study of a predator-prey system with Michaelis-Menten type predator-harvesting

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生物数学学报:英文版 2023年第8期16卷 121-153页

作者： Ankur Jyoti Kashyap Quanxin Zhu Hemanta Kumar Sarmah Debasish bhattacharjee Department of Mathematics Gauhati University AssamIndia Department of Mathematics Assam Royal Global University GuwahatiIndia School of Mathematical Sciences and Statistics Hunan Normal University Changsha410081P.R.China Sajkashyap.maths@***

The predation process plays a significant role in advancing life evolution and the maintenance of ecological balance and *** cooperation in predators is one of the most remarkable features of the predation process,which benefits the predators by developing fear upon their *** study investigates the dynamical behavior of a modified LV-type predator-prey system with Michaelis-Menten-type harvesting of predators where predators adopt cooperation strategy during *** ecologically feasible steady states of the system and their asymptotic stabilities are *** local codimension one bifurcations,***,saddle-node and Hopf bifurcations,that emerge in the system are *** approach is utilized to show the appearance of transcritical bifurcation and saddle-node bifurcation.A backward Hopfbifurcation is detected when the harvesting effort is increased,which destabilizes the system by generating periodic *** stability nature of the Hopf-bifurcating periodic orbits is determined by computing the first Lyapunov *** analyses revealed that above a threshold value of the harvesting effort promotes the coexistence of both *** periodic solutions of the system are also observed when the conversion efficiency rate or the hunting cooperation rate is *** have also explored codimension two bifurcations *** generalized Hopf and the Bogdanov-Takens bifurcation exhibit by the *** visualize the dynamical behavior of the system,numerical simulations are conducted using an ecologically plausible parameter *** existence of the bionomic equilibrium of the model is ***,an optimal harvesting policy for the proposed model is derived by considering harvesting effort as a control parameter with the help of Pontryagins maximum principle.

关键词： Hunting cooperation Michaelis-Menten-type harvesting transcritical and saddle-node bifurcation Hopf bifurcation optimal harvesting policy

A survey of density based clustering algorithms

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Frontiers of Computer Science 2021年第1期15卷 139-165页

作者： Panthadeep bhattacharjee Pinaki MITRA Department of Computer Science and Engineering Indian Institute of TechnologyGuwahati 781039India

Density based clustering algorithms(DBCLAs)rely on the notion of density to identify clusters of arbitrary shapes,sizes with varying *** surveys on DB-CLAs cover only a selected set of *** surveys fail to provide an extensive information about a variety of DBCLAs proposed till date including a taxonomy of the *** this paper we present a comprehensive survey of various DB-CLAS over last two decades along with their *** group the DBCLAs in each of the four categories:density definition,parameter sensitivity,execution mode and nature of*data and further divide them into various classes under each of these *** addition,we compare the DBCLAs through their common features and variations in citation and conceptual *** identify various application areas of DBCLAS in domains such as astronomy,earth sciences,molecular biology,geography,*** survey also identifies probable future directions of DBCLAs where involvement of density based methods may lead to favorable results.

关键词： clustering density based clustering survey classification common properties applications