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MV-Honeypot:Security Threat Analysis by Deploying Avatar as a Honeypot in COTS Metaverse Platforms

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Computer Modeling in Engineering & Sciences 2024年第10期141卷 655-669页

作者： arpita Dinesh Sarang Mohsen Ali Alawami Ki-Woong Park SysCore Lab.(Convergence Engineering for Intelligent Drone) Sejong UniversitySeoul05006Republic of Korea Division of Computer Engineering Hankuk University of Foreign StudiesYongin-si17035Republic of Korea Department of Information Security Sejong UniversitySeoul05006Republic of Korea

Nowadays,theuse of Avatars that are unique digital depictions has increased by users to access Metaverse—a virtual reality environment—through multiple devices and for various ***,the Avatar and Metaverse are being developed with a new theory,application,and design,necessitating the association of more personal data and devices of targeted users every *** Avatar and Metaverse technology explosion raises privacy and security concerns,leading to cyber ***-Honeypot,or Metaverse-Honeypot,as a commercial off-the-shelf solution that can counter these cyber attack-causing vulnerabilities,should be *** fill this gap,we study user’s engagements with Avatars in Metaverse,analyze possible security vulnerabilities,and create a model named Simplified Avatar Relationship Association with Non-linear Gradient(SARANG)that draws the full diagram of infrastructure components and data flow through accessing Metaverse in this *** also determine the most significant threat for each component’s cyberattacks that will affect user data and *** a result,the commercial off-the-shelf(COTS)of the MV-Honeypot must be established.

关键词： Avatar metaverse cybersecurity cloud computing internet of things artificial intelligence security analysis

Identification of galectin-3 as a novel potential prognostic/predictive biomarker and therapeutic target for cerebral cavernous malformation disease

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Genes & Diseases 2024年第1期11卷 67-71页

作者： Souvik Kar Andrea Perrelli Kiran Kumar Bali Raffaella Mastrocola arpita Kar Bushra Khan Luis Gand Arnab Nayak Christian Hartmann Wolfram SKunz Amir Samii Helmut Bertalanffy Saverio Francesco Retta International Neuroscience Institute Rudolf-PichlmayrStrasse 4Hannover 30625Germany Department of Clinical and Biological Sciences University of TorinoOrbassano(TO)10043Italy CCM Italia Research Network National Coordination Center at the Department of Clinical and Biological SciencesUniversity of TorinoOrbassano(TO)10043Italy Department of Experimental Pain Research Mannheim Center for Translational Neuroscience(MCTN)Medical Faculty MannheimHeidelberg UniversityMannheim 68167Germany Department of Kidney Liver and Metabolic DiseasesChildren’s HospitalHannover Medical SchoolHannover 30625Germany Ricarda-Huch-Street-10B Hannover 30880Germany Institute of Molecular and Cell Physiology Hannover Medical SchoolHannover 30625Germany Department of Neuropathology Institute of PathologyHannover Medical SchoolHannover 30625Germany Institute of Experimental Epileptology and Cognition Research and Department of Epileptology University Hospital BonnVenusberg-Campus 1Bonn 53127Germany epartment of Pharmacology and Physiology University of Rochester Medical CenterRochesterNY 14642USA

cerebrovascular disease of genetic origin characterized by abnormally dilated capillaries and a wide spectrum of symptoms,including headaches,seizures,neurological deficits,and intracerebral *** unpredictable clinical course and the current lack of therapies make the identification of prognostic and predictive biomarkers an imperative research challenge.1 Herein,we provide evidence that galectin-3(Gal-3),a major tissue and circulating biomarker of oxidative stress and inflammation,is significantly up-regulated both in CCM patients and ***,wholetranscriptome sequencing,qRT-PCR,and Western blotting studies demonstrated a significant up-regulation of Gal-3 expression levels both in surgical CCM specimens and in blood samples of CCM patients.

关键词： inflammation cerebral dilated

Frame Length Dependency for Fundamental Frequency Extraction in Noisy Speech

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Journal of Signal and Information Processing 2024年第1期15卷 1-17页

作者： Md. Saifur Rahman Any Chowdury Nargis Parvin arpita Saha Moinur Rahman Department of Information and Communication Technology Comilla University Cumilla Bangladesh Department of Computer Science and Engineering Bangladesh Army International University of Science and Technology (BAIUST) Cumilla Bangladesh Department of Information Technology University of Information Technology and Sciences (UITS) Dhaka Bangladesh

The fundamental frequency plays a significant part in understanding and perceiving the pitch of a sound. The pitch is a fundamental attribute employed in numerous speech-related works. For fundamental frequency extraction, several algorithms have been developed which one to use relies on the signal’s characteristics and the surrounding noise. Thus, the algorithm’s noise resistance becomes more critical than ever for precise fundamental frequency estimation. Nonetheless, numerous state-of-the-art algorithms face struggles in achieving satisfying outcomes when confronted with speech recordings that are noisy with low signal-to-noise ratio (SNR) values. Also, most of the recent techniques utilize different frame lengths for pitch extraction. From this point of view, This research considers different frame lengths on male and female speech signals for fundamental frequency extraction. Also, analyze the frame length dependency on the speech signal analytically to understand which frame length is more suitable and effective for male and female speech signals specifically. For the validation of our idea, we have utilized the conventional autocorrelation function (ACF), and state-of-the-art method BaNa. This study puts out a potent idea that will work better for speech processing applications in noisy speech. From experimental results, the proposed idea represents which frame length is more appropriate for male and female speech signals in noisy environments.

关键词： Pitch Estimation Fundamental Frequency BaNa ACF Frame Length

The effect of supply disruption in a two-layer supply chain with one retailer and two suppliers with promotional effort under random demand

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Journal of Management Analytics 2023年第1期10卷 22-37页

作者： Totan Garai arpita Paul Department of Mathematics Syamsundar CollegeShyamsundarIndia Department of Mathematics Dinhata CollegeCooch BeharIndia

This paper considers a closed-loop supply chain comprising one retailer and two *** assumes one supplier as the main supplier and another as the *** coordination issue of the supply chain has been discussed in this *** main supplier’s yield is considered subject to *** demand considered here is *** aim to calculate the supplier’s optimum production ***,the retailer’s optimal ordering quantity is found ***,in the centralized supply chain model,we want to maximize the expected profit under certain *** illustrations are discussed to the benefit some characteristic insights over the supply chain model.

关键词： Supply chain management random supply uncertain demand disruption

Petrogenesis of the Neoarchean zincian chromite within ultramafic xenoliths,Bastar Craton,India

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Acta Geochimica 2023年第3期42卷 471-487页

作者： arpita Karmakar Tushar Meshram Mohammad Asif Yogesh Pandey Geological Survey of India Vasudha BhawanKumarswamy LayoutBangalore 560111India Geological Survey of India NagpurIndia Geological Survey of India RaipurIndia

The present study reports and discusses the genesis of zincian chromite in the ultramafic xenoliths from the Dongripali area,Bastar craton,Central *** zincian chromite is in the ultramafic xenoliths of Bengpal supracrustal rock hosted by Neoarchaean Bundeli *** zincian chromite shows a range of Cr_(2)O_(3)(39.69 to 51.66 wt%),Al_(2)O_(3)(05.30 wt%to 08.71 wt%),FeO(21.74 wt%to 27.51 wt%),Fe_(2)O_(3)(10.19 wt%to 19.36wt%)with higher ZnO content ranging from 1.73 wt%to 4.08 wt%.Accordingly,their Cr#[Cr/(Cr+Al)]varies in a narrow range from 0.83 to *** calculated melt composition supports metamorphic or post-magmatic nature rather than common occurrences such as inclusion in diamonds,meteorites,and association with any sulfide-rich mineralised *** reveals that the post-magmatic processes play a vital role in transforming chromite to zincian *** empirical thermometric calculation from chromite,amphibole,and pyroxene support their metamorphic origin and formed during low-P and high-T amphibolite grade facies of metamorphism(~700℃).The Neoarchaean granitic magmatism has a significant role in generating and transferring the heat during contact metamorphism with hydration of ultramafic xenoliths and further alteration,i.e.,*** olivine is a major repository for Mn,Zn,and Co in peridotite/ultramafic;these elements get mobilised during the metamorphism and *** is a possible reason for the mobilisation of zinc and incorporation in the chromite within altered *** a result,chromiterich ultramafic xenolith subjected to metamorphic process gets enrichment of Zn and Fe due to elemental *** converts common chromite into zincian chromite,as reported in altered ultramafics elsewhere.

关键词： Zincian chromite Ultramafic Neoarchaean granitic magmatism High-grade metamorphism

Membranous nephropathy associated with tuberculosis-a case report

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Asian Pacific Journal of Tropical Medicine 2022年第4期15卷 183-185页

作者： Madhumita Pal Moumita Sengupta Keya Basu arpita Roychowdhury Department of Pathology IPGME&R and SSKM HospitalKolkataIndia Department of Nephrology IPGME&R and SSKM HospitalKolkataIndia

Rationale:Genitourinary tuberculosis can develop during the disease course of disseminated disease and the distinctive histological finding is epithelioid granuloma with or without caseation and accompanied Langhans-type giant ***,the lesion is only restricted to kidney involving both glomerular and extraglomerular *** with immune complex-mediated glomerulonephritis has been sparsely reported in the *** concern:A 42-year-old non-diabetic,non-hypertensive male presented with generalized body swelling and frothing of urine for 3 ***:Membranous nephropathy with tuberculous interstitial ***:Anti-tuberculous therapy for extrapulmonary tuberculosis was administered along with low dose ***:Reduction of proteinuria was achieved at one month follow-up ***:Tuberculosis should be considered as a potentially treatable cause of secondary membranous nephropathy as pharmacotherapy greatly helps improve the outcome.

关键词： Tuberculosis Membranous nephropathy Renal biopsy

Role of myeloid cells in the tumor microenvironment

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Journal of Cancer Metastasis and Treatment 2022年第1期8卷 317-333页

作者： arpita Balakrishnan Mohini Vig Shweta Dubey Amity Institute of Virology and Immunology Amity University Uttar Pradesh(AUUP)Noida 201303India

The dynamic interplay between tumor cells and immune cells in the microenvironment plays a crucial role in determining disease severity and therapeutic outcome in *** cells are the most abundantly available cell population in the tumor *** cells have been shown to exist in diverse phenotypes and play both antitumoral and protumoral roles in *** the biology of myeloid cells can lay the foundation for the development of therapeutic strategies aimed at enhancing the antitumoral role of myeloid *** article presents an overview of the role of myeloid cells in tumor development and various mechanisms by which myeloid cells aid tumor *** drugs against cancer that utilize myeloid cells and the role of myeloid cells in drug resistance are also discussed.

关键词： Myeloid cells tumor cancer tumor microenvironment tumor-associated macrophages dendritic cells tumor-associated neutrophils myeloid-derived suppressor cells

Synthesis and enhanced photoluminescence properties of red emitting divalent ion(Ca^(2+))doped Eu:Y_(2)O_(3)nanophosphors for optoelectronic applications

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Journal of Rare Earths 2022年第8期40卷 1187-1198页

作者： arpita Dwivedi Monika Srivastava Ankur Dwivedi Amit Srivastava Anurag Mishra S.K.Srivastava Department of Physics Institute of ScienceBanaras Hindu University(BHU)Varanasi221005India School of Materials Science and Technology Indian Institute of Technology(BHU)Varanasi221005India Department of Mining Engineering Indian Institute of Technology(BHU)Varanasi221005India Department of Physics TDPG College VBS Purvanchal UniversityJaunpur222001India

This work presents the synthesis of Y_(2)O_(3):Eu^(3+),χCa^(2+)(χ=0 mol%,1 mol%,3 mol%,5 mol%,7 mol%,9 mol%,11 mol%)nanophosphors with enhanced photoluminescence properties through a facile solution combustion method for optoelectronic,display,and lighting *** X-ray diffraction(XRD)patterns of the proposed nanophosphor reveal its structural properties and crystalline *** transmission electron microscope(TEM)results confirm the change in the shape of the particle and aggregation of particles after co-doping with Ca^(2+).Fourier transform infrared spectroscopy(FTIR)and Raman vibrations also confirm the presence of Y-O vibration and subsequently explain the crystalline nature,structural properties,and purity of the *** the synthesized nanophosphors samples emit intense red emission at 613 nm(~5D_(0)→~7 F_(2))under excitation with 235,394 and 466 nm wavelengths of Eu^(3+)*** photoluminescence(PL)emission spectra excited with 235 nm illustrate the highest emission peak with two other emission peaks excited with 466 and 394 nm that is 1.4 times higher than 466 nm and 1.9 times enhanced by 394 nm wavelength,*** emission intensity of Y_(2)O_(3):Eu^(3+),χCa^(2+)(5 mol%)is increased 8-fold as compared to Eu:Y_(2)O_(3).Doping with Ca^(2+)ions enhances the emission intensity of Eu:Y_(2)O_(3)nanopho sphors due to an increase in energy transfer in Ca^(2+)→Eu^(3+)through asymmetry in the crystal field and by introduction of radiative defect centers through oxygen vacancies in the yttria *** is also observed that the optical band gap and the lifetime of the~5D_(0)level of Eu^(3+)ions in Y_(2)O_(3):Eu^(3+),xCa^(2+)nanophosphor sample gets changed with a doping conce ntration of Ca^(2+)*** also reveals high thermal stability and quantum yield as estimating activation energy of 0.25 eV and 81%,***,CCT,and color purity values(>98%)show an improved red-emitting nanophosphor in the warm region of light,which m

关键词： Red emission Photoluminescence(PL) Y_(2)O_(3):Eu^(3+),xCa^(2+) Rare earths Nanophosphors LEDs

Recent Advances in the Unconventional Design of Electrochemical Energy Storage and Conversion Devices

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Electrochemical Energy Reviews 2022年第4期5卷 38-62页

作者： Senthil Velan Venkatesan arpita Nandy Kunal Karan Stephen R.Larter Venkataraman Thangadurai Department of Chemistry University of Calgary2500 University Drive NWCalgaryAB T2N1N4Canada Department of Chemical&Petroleum Engineering University of Calgary2500 University Drive NWCalgaryAB T2N1N4Canada Department of Geoscience University of Calgary2500 University Drive NWCalgaryAB T2N1N4Canada

As the world works to move away from traditional energy sources,effective efficient energy storage devices have become a key factor for *** emergence of unconventional electrochemical energy storage devices,including hybrid batteries,hybrid redox flow cells and bacterial batteries,is part of the *** alternative electrochemical cell configurations provide materials and operating condition flexibility while offering high-energy conversion efficiency and modularity of design-to-design *** power of these diverse devices ranges from a few milliwatts to several ***-ing durable electronic and point-of-care devices is possible due to the development of all-solid-state batteries with efficient electrodes for long cycling and high energy *** batteries made of earth-abundant metal ions are approaching the capacity of lithium-ion *** are being reduced with the advent of flow batteries with engineered redox molecules for high energy density and membrane-free power generating electrochemical cells,which utilize liquid dynamics and interfaces(solid,liquid,and gaseous)for electrolyte *** batteries support electrode regeneration strategies for chemical and bio-batteries reducing battery energy *** batteries have different benefits,e.g.,carbon-neutral Li-CO_(2) batteries consume CO_(2) and generate power,offering dual-purpose energy storage and carbon *** work considers the recent technological advances of energy storage *** transition from conventional to unconventional battery designs is examined to identify operational flexibilities,overall energy storage/conversion efficiency and application ***,a list of facilities for large-scale deployment of major electrochemical energy storage routes is provided.

关键词： Unconventional energy storage Redox flow battery Organic electrolytes Membrane-free flow cell All-solid-state batteries