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An Ensemble-Based Hotel Reviews System Using Naive Bayes Classifier

Computer Modeling in Engineering & Sciences 2023年第10期137卷 131-154页

作者： Joseph Bamidele Awotunde Sanjay Misra vikash katta Oluwafemi Charles Adebayo Department of Computer Science Faculty of Information and Communication SciencesUniversity of IlorinIlorin240003Nigeria Department of Computer Science and Communication Otfold University CollegeHaldenNorway

The task of classifying opinions conveyed in any form of text online is referred to as sentiment *** emergence of social media usage and its spread has given room for sentiment analysis in our daily *** media applications and websites have become the foremost spring of data recycled for reviews for sentimentality in various *** subject matter can be encountered on social media platforms,such as movie product reviews,consumer opinions,and testimonies,among others,which can be used for sentiment *** rapid uncovering of these web contents contains divergence of many benefits like profit-making,which is one of the most vital of them *** to a recent study,81%of consumers conduct online research prior to making a *** the reviews available online are too huge and numerous for human brains to process and ***,machine learning classifiers are one of the prominent tools used to classify sentiment in order to get valuable information for use in companies like hotels,game companies,and so *** the sentiments of people towards different commodities helps to improve the services for contextual promotions,referral systems,and market ***,this study proposes a sentiment-based framework detection to enable the rapid uncovering of opinionated contents of hotel reviews.A Naive Bayes classifier was used to process and analyze the dataset for the detection of the polarity of the *** dataset from Datafiniti’s Business Database obtained from Kaggle was used for the experiments in this *** performance evaluation of the model shows a test accuracy of 96.08%,an F1-score of 96.00%,a precision of 96.00%,and a recall of 96.00%.The results were compared with state-of-the-art classifiers and showed a promising performance andmuch better in terms of performancemetrics.

关键词： Sentiment analysis hotel reviews Naive Bayes algorithm consumer opinions web 2.0 machine learning

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Trends of autoimmune liver disease inpatient hospitalization and mortality from 2011 to 2017:A United States nationwide analysis

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World Journal of Hepatology 2024年第7期16卷 1029-1038页

作者： Ali Wakil Yasameen Muzahim Mina Awadallah vikash Kumar Natale Mazzaferro Patricia Greenberg Nikolaos Pyrsopoulos Department of Gastroenterology and Hepatology The Brooklyn Hospital CenterBrooklynNY 11201United States Department of Gastroenterology and Hepatology University of Iowa Hospitals and ClinicsIowa CityIA 52242United States Department of Gastroenterology and Hepatology Rutgers the New Jersey Medical SchoolNewarkNJ 07103United States Department of Biostatistics and Epidemiology Rutgers School of Public HealthPiscatawayNJ 08854United States

BACKGROUND Autoimmune liver diseases(AiLD)encompass a variety of disorders that target either the liver cells(autoimmune hepatitis,AIH)or the bile ducts[primary biliary cholangitis(PBC),and primary sclerosing cholangitis(PSC)].These conditions can progress to chronic liver disease(CLD),which is characterized by fibrosis,cirrhosis,and hepatocellular *** studies have indicated a rise in hospitalizations and associated costs for CLD in the US,but information regarding inpatient admissions specifically for AiLD remains *** To examine the trends and mortality of inpatient hospitalization of AiLD from 2011 to *** This study is a retrospective analysis utilizing the National Inpatient Sample(NIS)*** subjects admitted between 2011 and 2017 with a diagnosis of AiLD(AIH,PBC,PSC)were identified using the International Classification of Diseases(ICD-9)and ICD-10 *** AiLD admission was defined if the first admission code was one of the AiLD *** AiLD admission was defined as having the AiLD diagnosis anywhere in the admission diagnosis(25 diagnoses).Subjects aged 21 years and older were *** national estimates of hospitalization were derived using sample weights provided by NIS.χ^(2)tests for categorical data were *** primary trend characteristics were in-hospital mortality,hospital charges,and length of *** From 2011 to 2017,hospitalization rates witnessed a significant decline,dropping from 83263 admissions to 74850 admissions(P65),mostly female(median 59%)(P<0.05),and primarily Caucasians(median 68%)(P<0.05).Medicare was the major insurance(median 56%),followed by private payer(median 27%)(P<0.05).The South was the top geographical distribution for these admissions(median 33%)(P<0.05),with most admissions taking place in big teaching institutions(median 63%)(P<0.05).Total charges for admissions rose from 66031 in 2011

关键词： Autoimmune hepatitis Autoimmune liver disease Epidemiology Cost-Effective care Admissions trend Mortality rate

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Global trends in hepatitis C-related hepatocellular carcinoma mortality:A public database analysis(1999-2019)

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World Journal of Virology 2024年第1期13卷 69-83页

作者： Hassam Ali Fnu vikash Vishali Moond Fatima Khalid Abdur Rehman Jamil Dushyant Singh Dahiya Amir Humza Sohail Manesh Kumar Gangwani Pratik Patel Sanjaya K Satapathy Department of Internal Medicine/Gastroenterology East Carolina University Brody School of MedicineGreenvilleNC 27834United States Department of Internal Medicine Jacobi Medical Center/Albert Einstein College of MedicineBronxNY 10461United States Department of Internal Medicine Saint Peter's University Hospital/Robert Wood Johnson Medical SchoolNew BrunswickNJ 08901United States Department of Internal Medicine Quaid-e-Azam Medical CollegeBahawalpur 63100PunjabPakistan Department of Internal Medicine Samaritan Medical CentreWatertownMA 13601United States Division of Gastroenterology Hepatology&MotilityThe University of Kansas School of MedicineKansas CityKS 66160United States Department of Surgery New York University Winthrop HospitalNew YorkMineloaNY 11501United States Department of Internal Medicine The University of ToledoToledoOH 43606United States Department of Gastroenterology Mather Hospital/Hofstra University Zucker School of MedicineNY 11777United States Division of Hepatology Department of MedicineNorth Shore University HospitalManhassetNY 11030United States

BACKGROUND Hepatitis C is the leading cause of chronic liver disease worldwide and it significantly contributes to the burden of hepatocellular carcinoma(HCC).However,there are marked variations in the incidence and mortality rates of HCC across different geographical *** the advent of new widely available treatment modalities,such as direct-acting antivirals,it is becoming increasingly imperative to understand the temporal and geographical trends in HCC mortality associated with Hepatitis ***,gender disparities in HCC mortality related to Hepatitis C are a crucial,yet underexplored aspect that adds to the disease's global *** some studies shed light on gender-specific trends,there is a lack of comprehensive data on global and regional mortality rates,particularly those highlighting gender *** gap in knowledge hinders the development of targeted interventions and resource allocation *** The results of our study show an overall decline in the mortality rates of patients with hepatitis C-related HCC over the last two ***,females exhibited a remarkable decrease in mortality compared to ***,East Asia and the Pacific displayed a significant decline in mortality,while Europe and Central Asia witnessed an upward *** America and the Caribbean also experienced an increase in mortality ***,no significant difference was observed in the Middle East and North *** America exhibited a notable upward *** Asia and Sub-Saharan Africa significantly declined throughout the study *** raises the hope of identifying areas for implementing more targeted *** some progress,multiple challenges remain in meeting the WHO 2030 goal of eliminating viral hepatitis[24].

关键词： Carcinoma Hepatocellular Antiviral agents Global Burden of Disease Quality indicators Health care Liver neoplasms Hepatitis C Chronic hepatitis C

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Parallel inverter control using different conventional control methods and an improved virtual oscillator control method in a standalone microgrid

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Protection and Control of Modern Power Systems 2022年第1期7卷 393-405页

作者： vikash Gurugubelli Arnab Ghosh Anup Kumar Panda Department of Electrical Engineering National Institute of Technology RourkelaRourkelaOdisha 769008India

Partly because of advances in power electronic converters,the share of renewable energy in power generation is steadily *** main medium of interface for integrating renewable energy sources to the utility grid is the power electronic *** oscillator control(VOC)is a time-domain approach for controlling parallel inverters in a standalone microgrid(MG).The concept is to simulate nonlinear deadzone oscillator dynamics in a system of invert-ers to ensure a stable AC MG in the absence of *** is a time-domain and self-synchronizing control-ler that simply requires the measurement of filter current,whereas traditional droop control and the virtual synchro-nous machine(VSM)require low pass filters for active and reactive power *** this work,a particle swarm optimization(PSO)-based VOC method(VOC-PSO)is proposed,in which the parameters of the VOC are designed using the PSO *** system performance using droop,VSM,VOC,and VOC-PSO controllers are investigated using MATLAB and Opal-RT real-time digital simulator *** results show that the proposed VOC-PSO gives improved performance over other control *** efficacy of the proposed VOC-PSO control method is also demonstrated by the experimental results.

关键词： VOC VSM Droop control Particle swarm optimization Parallel inverters Standalone microgrid

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Comparison of above elbow and below elbow immobilisation for conservative treatment of distal end radius fracture in adults:A systematic review and meta-analysis of randomized clinical trials

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Chinese Journal of Traumatology 2023年第4期26卷 204-210页

作者： vikash Raj Sitanshu Barik Richa Department of Orthopedics All India Institute of Medical SciencesDeogharIndia Department of Community and Family Medicine All India Institute of Medical SciencesDeogharIndia

Purpose:The aim of this study was to analyze if any difference exists on the type of immobilisation(above elbow *** elbow)in the conservative treatment of distal end radius fractures in ***:The study was performed in accordance with Preferred Reporting Items for Systematic Reviews and *** electronic literature search was performed up to 1st October 2021 in Medline,Embase,Ovid and Cochrane database using the search terms,"distal end radius fractures OR fracture of distal radius","conservative treatment OR non-surgical treatment","above elbow immobilisation"and"below elbow immobilisation".Randomized clinical trials written in English,describing outcome of distal end radius fractures in adults by conservative or non-surgical means using above elbow immobilisation or below elbow immobilisation were included and assessed according to the risk of bias assessment(RoB2)tool by Cochrane ***-randomized clinical trials,observational studies,retrospec-tive studies,review articles,commentaries,editorials,conference presentations,operative techniques and articles without availability of full text were excluded from this *** meta-analysis was performed using Review Manager version 5.4.1(The Cochrane Collaboration,Copenhagen,Denmark).Results:Six randomized clinical trials were included for quantitative *** heterogeneity(I2>75%)was noted among all the *** standard mean difference(MD)between the disability of the arm,shoulder and hand scores in both the groups was 0.52(95%CI:-0.28 to 1.32)which was statistically *** was no statistical difference in the radial height(MD=0.10,95%CI:-0.91 to 1.12),radial inclination(MD=0.5,95%CI:-1.88 to 2.87,palmar tilt(MD=1.06,95%CI:-0.31 to 2.43)and ulnar variance(MD=0.05,95%CI:-0.74 to 0.64).It was observed that shoulder pain occurred more commonly as a complication in above elbow immobilisation and the values were statistically significant(above elbow:38/92,41.3%;b

关键词： Distal radiusfractures Conservative treatment Above elbow immobilisation Below elbow immobilisation DASH scores

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Positive and negative effects of graphite flake and monolayer graphene oxide templates on protein crystallization

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Particuology 2023年第8期79卷 27-34页

作者： Zhichun Lin Wenqing Tian Yang Su vikash Kumar Yadav Huaiyu Yang Department of Chemical Engineering Loughborough UniversityLoughboroughLE113TUUK Institute of Materials Research Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen518055China Human Sciences Research Centre University of DerbyDE221GBUK

Heterogeneous template-induced nucleation is a promising way to regulate protein crystallization events and could be employed for purification processes and crystallographic *** crystallization process with graphite and graphene oxide,as heterogeneous templates,were *** than 640 hanging drops with different concentrations of Lysozyme(30,50,70,100 mg/mL)and NaCl(0.7,0.9,1.1,1.3,1.5 M)were crystallised at 4 ℃ with or without graphite/graphene oxide *** induction times and crystallization process were observed under the *** lysozyme in the solutions with graphite flakes nucleated faster under all the conditions than the lysozyme with equal experimental conditions without *** crystals preferred to grow around the edge of graphite flakes than on the flat *** the droplets with monolayer graphene oxide,more crystals appeared around gra-phene oxide particles,and the faster or slower nucleation processes with templates were dependent on the lysozyme and NaCl *** oxide templates strongly inhibited nucleation at high lysozyme concentrations but promoted nucleation at low lysozyme *** heterogeneous templates changed the crystal morphology and the crystallization *** crystals were observed in the solution with graphite templatesthan with graphene oxide templates and without any template.

关键词： Graphite Graphene oxide Protein crystallization Adsorption Heterogeneous nucleation Template technology

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Connections between biomechanics and higher infectivity: a tale of the D614G mutation in the SARS-CoV-2 spike protein

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Signal Transduction and Targeted Therapy 2021年第2期6卷 193-194页

作者： Anshumali Mittal vikash Verma Luxmi Nagar JaspurUttarakhandIndiaUniversity of MassachusettsAmherstMAUSA Biology Department University of MassachusettsAmherstMAUSA

Mutations are known to play a critical role in how a species *** a recent article that appeared in the journal Cell,Yurkovetskiy et al.1 reported the structural and functional properties of the SARS-CoV-2 spike protein variant D614G that explains the basis of its increased *** observed that the mutant(D614G)was 4 to 9-fold more infectious than the wild type(D614),and the increased infectivity was not limited to human angiotensin-converting enzyme 2(ACE2).1 The cryo-EM structure suggested that D614G mutation weakens the stability of the homotrimer that shifts protein conformation towards an ACE2-binding fusion-competent state.1 The authors additionally showed that the D614G variant is neutralized by monoclonal antibodies targeting the spike protein receptor-binding domain(RBD).

关键词： ACE2 al. D61

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Tibet's Development Is Beyond Imagination

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China News Release 2023年第8期 60-62页

作者： Singh vikash Kumar the School of Asian Studies of the Beijing Foreign Studies University

When people think about Tibet,the first thing that springs to mind is that it is the“roof of the world.”Having heard of the title since I was a child,I always wanted to climb to the roof of the world for a panoramic ***,that dream gradually faded away until 2007—when I traveled to China for the first time,my interest in Tibet was rekindled.

关键词： travel Tibet Beyond

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TIBETAN CULTURAL HERITAGE AND ITS PRESERVATION

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China Report ASEAN 2023年第7期8卷 62-64页

作者： vikash Kumar Singh Beijing Foreign Studies University

The Western world looks at Tibet as a paradise on Earth,but not one in which they would like to ***’ll find two main opinions on *** first,generally promoted by Western media and scholarship,is that Tibet is in jeopa... 详细信息

关键词： regime Tibet promoted

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Adaptive unknown input observer approach for multi-fault diagnosis of PEM fuel cell system with time-delays

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Journal of Control and Decision 2021年第2期8卷 222-232页

作者： vikash Sinha Sharifuddin Mondal Department of Mechanical Engineering National Institute of TechnologyPatnaIndia

An adaptive unknown input observer(AUIO)for polymer electrolyte membrane fuel cell system with time-delays is developed and applied to formulate a fault diagnosis algorithm for multiple actuator fault detection and isolation(MAFDI).In a scheme based on multiple-model,a group of observers are developed based on a model that describes the system in the presence of a specific actuator *** observers are used to generate fault-dependant residual *** a model matches the system,the residual signal is zero and becomes non-zero in case of a faulty *** types of actuator faults are considered namely stuck fault,where the inputs delivered by the faulty actuators are blocked to constant value,and loss of effectiveness *** effectiveness of the proposed AUIO and MAFDI algorithm is shown with simulation results.

关键词： PEMFC AUIO FDI LMI time-delays

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