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Cloud‐based video streaming services:Trends,challenges,and opportunities

CAAI Transactions on Intelligence Technology 2024年第2期9卷 265-285页

作者： Tajinder Kumar Purushottam Sharma Jaswinder Tanwar Hisham Alsghier shashi bhushan Hesham Alhumyani Vivek Sharma Ahmed I.Alutaibi CSE Department JMIETIYamunanagarHaryanaIndia Department of Information Technology ASETAmity University Uttar PradeshNoidaIndia Tata Communications Limited New DelhiIndia Department of Information Technology College of Computer and Information SciencesMajmaah UniversityMajmaahSaudi Arabia Amity School of Engineering and Technology Amity UniversityPatnaBiharIndia Department of Computer Engineering College of Computers and Information TechnologyTaif UniversityTaifSaudi Arabia Department of Computer Engineering College of Computer and Information SciencesMajmaah UniversityMajmaahSaudi Arabia

Cloud computing has drastically changed the delivery and consumption of live streaming *** designs,challenges,and possible uses of cloud computing for live streaming are studied.A comprehensive overview of the technical and business issues surrounding cloudbased live streaming is provided,including the benefits of cloud computing,the various live streaming architectures,and the challenges that live streaming service providers face in delivering high‐quality,real‐time *** different techniques used to improve the performance of video streaming,such as adaptive bit‐rate streaming,multicast distribution,and edge computing are discussed and the necessity of low‐latency and high‐quality video transmission in cloud‐based live streaming is *** such as improving user experience and live streaming service performance using cutting‐edge technology,like artificial intelligence and machine learning are *** addition,the legal and regulatory implications of cloud‐based live streaming,including issues with network neutrality,data privacy,and content moderation are *** future of cloud computing for live streaming is examined in the section that follows,and it looks at the most likely new developments in terms of trends and *** technology vendors,live streaming service providers,and regulators,the findings have major policy‐relevant *** on how stakeholders should address these concerns and take advantage of the potential presented by this rapidly evolving sector,as well as insights into the key challenges and opportunities associated with cloud‐based live streaming are provided.

关键词： cloud computing video analysis video coding

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New Chain Imputation Methods for Estimating Population Mean in the Presence of Missing Data Using Two Auxiliary Variables

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Communications in Mathematics and Statistics 2023年第2期11卷 325-340页

作者： shashi bhushan Abhay Pratap Pandey Department of Mathematics and Statistics Dr.Shakuntala Misra National Rehabilitation UniversityLucknowIndia Department of Statistics Ramanujan College University of DelhiNew DelhiIndia

This article deals with some new chain imputation methods by using two auxiliary variables under missing completely at random(MCAR)*** proposed generalized classes of chain imputation methods are tested from the viewpoint of optimality in terms of *** proposed imputation methods can be considered as an efficient extension to the work of Singh and Horn(Metrika 51:267-276,2000),Singh and Deo(Stat Pap 44:555-579,2003),Singh(Stat A J Theor Appl Stat 43(5):499-511,2009),Kadilar and Cingi(Commun Stat Theory Methods 37:2226-2236,2008)and Diana and Perri(Commun Stat Theory Methods 39:3245-3251,2010).The performance of the proposed chain imputation methods is investigated relative to the conventional chain-type imputation *** theoretical results are derived and comparative study is conducted and the results are found to be quite encouraging providing the improvement over the discussed work.

关键词： Missing data Imputation MCAR

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Synthesis,characterization and application of Lagerstroemia speciosa embedded magnetic nanoparticle for Cr(Ⅵ)adsorption from aqueous solution

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Journal of Environmental Sciences 2017年第5期29卷 283-293页

作者： Shalini Srivastava shashi bhushan Agrawal Monoj Kumar Mondal Department of Botany Institute of Science Banaras Hindu University Varanasi 221005 India Department of Chemical Engineering and Technology Indian Institute of Technology Banaras Hindu University Varanasi 221005 Uttar Pradesh India

Lagerstroemia speciosa bark（LB） embedded magnetic nanoparticles were prepared by co-precipitation of Fe2＋ and Fe3＋ salt solution with ammonia and LB for Cr（Ⅵ） removal from aqueous *** native LB,magnetic nanoparticle（MNP）,*** embedded magnetic nanoparticle（MNPLB） and Cr（Ⅵ） adsorbed MNPLB particles were characterized by SEM-EDX,TEM,BET-surface area,FT-IR,XRD and TGA *** analysis confirmed nearly spherical shape of MNP with an average diameter of 8.76 nm and the surface modification did not result in the phase change of MNP as established by XRD analysis,while led to the formation of secondary particles of MNPLB with diameter of 18.54 *** results revealed covalent binding between the hydroxyl group of MNP and carboxyl group of LB particles and further confirmed its physico-chemical nature favorable for Cr（Ⅵ） *** Cr（Ⅵ） adsorption on to MNPLB particle as an adsorbent was tested under different contact time,initial Cr（Ⅵ） concentration,adsorbent dose,initial pH,temperature and agitation *** results of the equilibrium and kinetics of adsorption were well described by Langmuir isotherm and pseudo-second-order model,*** thermodynamic parameters suggest spontaneous and endothermic nature of Cr（Ⅵ）adsorption onto *** maximum adsorption capacity for MNPLB was calculated to be 434.78 mg/g and these particles even after Cr（Ⅵ） adsorption were collected effortlessly from the aqueous solution by a *** desorption of Cr（Ⅵ）-adsorbed MNPLB was found to be more than 93.72%with spent MNPLB depicting eleven successive adsorption-desorption cycles.

关键词： Lagerstroemia speciosa Magnetic nanoparticles Co-precipitation Cr(Ⅵ) ions Adsorption capacity

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Phenylboronic acids in crystal engineering:Utility of the energetically unfavorable syn,syn-conformation in co-crystal design

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Science China Chemistry 2011年第12期54卷 1909-1919页

作者： VARUGHESE Sunil SINHA shashi bhushan DESIRAJU Gautam R. Solid State and Structural Chemistry Unit Indian Institute of Science

原则上， Phenylboronic 酸能在三不同 conformers 存在(syn， syn；syn，反和反，反) 与不同精力侧面。处于他们的本国的状态，这些混合物比较喜欢精力充沛地赞成的 syn，反符合构造。在分子的建筑群，然而，功能展出 conformational ... 详细信息

原则上， Phenylboronic 酸能在三不同 conformers 存在(syn， syn；syn，反和反，反) 与不同精力侧面。处于他们的本国的状态，这些混合物比较喜欢精力充沛地赞成的 syn，反符合构造。在分子的建筑群，然而，功能展出 conformational 差异。与 N 施主混合物，在我们报导的这份报纸，一系列合作水晶由基于 syn 包含 synthons 的设计策略准备了， boronic 酸功能的 syn 符合构造。为这个目的，我们与 1,2-diazo 碎片(alprazolam， 1H-tetrazole， acetazolamide 和 benzotriazole ) 采用了混合物，为共结晶的 1,10-phenanthroline 和 2,2-bipyridine 试验。然而，我们的学习证明在 coformer 的 1,2-diazo 碎片的仅仅的存在不与 syn 保证合作水晶的成功的形成， boronic 酸的 syn 符合构造。

关键词： SYN 晶体工程实用工具构象苯酸设计吡啶化合物水晶

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Transient peristaltic diffusion of nanofluids: A model of micropumps in medical engineering

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Journal of Hydrodynamics 2018年第6期30卷 1001-1011页

作者： Dharmendra Tripathi shashi bhushan O.Anwar Bég Noreen Sher Akbar Department of Science and Humanities National Institute of TechnologyUttarakhand–246174 India Department of Mechanical Engineering Manipal University Department of Aeronautical and Mechanical Engineering University of Salford DBS & H CEME National University of Sciences and TechnologyIslamabad Pakistan

Peristaltic micro-pumps offer an excellent mechanism for delivery of a variety of medicines including drugs, corneal solutions etc. The surge in deployment of nanoparticles in medicine has provided new potential for such pumps. In light of this we investigate the time-dependent peristaltic flow of nanofluids with diffusive effects through a finite non-uniform channel, this geometry being more representative of real micro-pumps. Creeping flow is taken into account(inertial forces are small compared with viscous forces) i.e., Reynolds number is low(Re< 1) and wavelength is also taken to be very large. The Buongiorno formulation for nanofluids is employed with an Oberbeck-Boussinesq approximation. Closed-form solutions are developed for the non-dimensional governing equations subject to physically realistic boundary conditions. Mathematica symbolic software is employed to evaluate the evolution of nanoparticle fraction, temperature, axial velocity, transverse velocity and pressure difference distribution along the length of the pump channel with variation in thermal Grashof number, basic-density(species i.e., mass) Grashof number, Brownian motion parameter and thermophoresis parameter.

关键词： Unsteady flow peristaltic pumps nanofluids medical engineering diffusive process grashof number thermophoresis

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Analytical approach to entropy generation and heat transfer in CNT-nanofluid dynamics through a ciliated porous medium

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Journal of Hydrodynamics 2018年第2期30卷 296-306页

作者： Noreen Sher Akbar M.Shoaib Dharmendra Tripathi shashi bhushan O.Anwar Bég DBS&H CEME National University of Sciences and Technology School of Natural Sciences National University of Sciences and Technology Department of Mechanical Engineering Manipal University Medical Energy and Propulsion Engineering Sciences Department of Aeronautical and Mechanical Engineering University of Salford

The transportation of biological and industrial nanofluids by natural propulsion like cilia movement and self-generated contraction-relaxation of flexible walls has significant applications in numerous emerging technologies. Inspired by multi-disciplinary progress and innovation in this direction, a thermo-fluid mechanical model is proposed to study the entropy generation and convective heat transfer of nanofluids fabricated by the dispersion of single-wall carbon nanotubes（SWCNT） nanoparticles in water as the base fluid. The regime studied comprises heat transfer and steady, viscous, incompressible flow, induced by metachronal wave propulsion due to beating cilia, through a cylindrical tube containing a sparse（i.e., high permeability） homogenous porous medium. The flow is of the creeping type and is restricted under the low Reynolds number and long wavelength approximations. Slip effects at the wall are incorporated and the generalized Darcy drag-force model is utilized to mimic porous media effects. Cilia boundary conditions for velocity components are employed to determine analytical solutions to the resulting non-dimensionalized boundary value problem. The influence of pertinent physical parameters on temperature, axial velocity, pressure rise and pressure gradient, entropy generation function, Bejan number and stream-line distributions are computed numerically. A comparative study between SWCNT-nanofluids and pure water is also computed. The computations demonstrate that axial flow is accelerated with increasing slip parameter and Darcy number and is greater for SWCNT-nanofluids than for pure water. Furthermore the size of the bolus for SWCNT-nanofluids is larger than that of the pure water. The study is applicable in designing and fabricating nanoscale and microfluidics devices, artificial cilia and biomimetic micro-pumps.

关键词： Metachronal wave single-wall carbon nanotubes (SWCNT) entropy generation porous medium cilia motion heat transfer Bejan number

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Functional properties, phenolic constituents and antioxidant potential of industrial apple pomace for utilization as active food ingredient

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Food Science and Human Wellness 2015年第4期4卷 180-187页

作者： Shalika Ranaa Sakshi Gupta Ajay Rana shashi bhushan Academy of Scientific and Innovative Research CSIR-Institute of Himalayan Bioresource TechnologyPalampurHimachal Pradesh 176061India Division of Biotechnology CSIR-Institute of Himalayan Bioresource TechnologyPalampurHimachal Pradesh 176061India Division of Hill Area Tea Science CSIR-Institute of Himalayan Bioresource TechnologyPalampurHimachal Pradesh 176061India Nutritionist Vivekanand Medical InstitutePalampurHimachal Pradesh 176061India

Apple pomace is a waste biomass generated after apple fruit *** present investigation,efforts were made to comprehend influence of differently dried pomace on cell wall properties and phenolic *** drying techniques were employed to remove moisture content from fresh apple *** dietary fiber yield(74%)and array of functional properties such as density,water and oil holding capacity,swelling capacity and glucose dialysis retardation index(36.91%)was found better in freeze dried *** higher total phenolics(5.78±0.08 mg GAE/g dry weight)content was also recorded in freeze dried fraction followed by oven and sun *** 50%aqueous acetone was found as more efficient solvent for extraction of phenolic ***-HPLC analysis has revealed presence of quercetin,phloridzin and phloretin as major ***,it is evident from the results that pomace generated at industrial scale can be utilized as a source of dietary food ingredient.

关键词： Dietary fiber Drying Apple pomace Polyphenols Antioxidant

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A multiwavelength view of a classical T Tauri star CV Cha

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Research in Astronomy and Astrophysics 2019年第1期19卷 75-86页

作者： Jeewan Chandra Pandey Subhajeet Karmakar Arti Joshi Saurabh Sharma shashi bhushan Pandey Anil Kumar Pandey Aryabhatta Research Institute of Observational Sciences (ARIES)

Using long-term optical, ultraviolet(UV) and X-ray data, we present a study of a classical T Tauri star CV Cha. The V-band light curve obtained from the All Sky Automated Survey(ASAS) shows short as well as long-term variability. The short-term variability could be due to rotational modulation of CV Cha. We derive the rotational period of 3.714 ± 0.001 d for CV Cha. UV light curves obtained from Swift also show the variations. X-ray light curves from XMM-Newton and Swift do not show any significant short as well as long-term variability. However, the light curve from Chandra appears to be variable, which could be due to the emergence of flaring activities. X-ray spectra from all observations are explained well by the single temperature plasma of 0.95 keV with X-ray luminosity of 1030.4erg s-1in the 0.5–7.5 keV energy band. It appears that variability in optical and UV bands could be due to the presence of both hot and cool spots on the surface, while X-ray emission is dominated by magnetic processes.

关键词： stars:activity stars:individual(CV Cha) stars:pre-main sequence stars:variable:T Tauri X-ray:stars

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Assessment of tree diversity and above-ground biomass in coffee agroforest dominated tropical landscape of India's Central Western Ghats

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Journal of Forestry Research 2020年第3期31卷 1005-1015页

作者： Guddappa M.Devagiri Anil Kumar Khaple Hosuru B.Anithraj Cheppudira G.Kushalappa Amaresh Kumar Krishnappa shashi bhushan Mishra College of Forestry University of Agricultural and Horticultural SciencesShivamoggaPonnampetKodaguKaranataka 571216India

The purpose of this study was to quantify the changes in tree diversity and above-ground biomass associated with six land-use types in Kodagu district of India's Western Ghats. We collected data on species richness,composition and above-ground biomass(AGB) of trees,shrubs and herbs from 96 sample plots of 0.1 ha. Totals of83 species from 26 families were recorded across the landuses. Tree species richness, diversity and composition were significantly higher in evergreen forest(EGF) than in other land-uses. Similarly, stem density and basal area were greater in EGF compared to other land-uses. Detrended correspondence analysis(DCA) yielded three distinct groups along the land-use intensities and rainfall gradient on the first and second axes, respectively. The first DCA axis accounted for 45% and second axis for 35% of the total variation in species composition. Together the first two axes accounted for over 2/3 of the variation in species composition across land-use types. Across the land-uses,AGB ranged from 58.6 Mg ha-1 in rubber plantation to327.3 Mg ha-1 in evergreen forest. Our results showed that species diversity and AGB were negatively impacted bythe land-use changes. We found that coffee agroforests resembled natural forest and mixed species plantation in terms of tree diversity and biomass production, suggesting that traditional coffee farms can help to protect tree species, sustain smallholder production and offer opportunities for conservation of biodiversity and climate change mitigation.

关键词： Western Ghats Coffee agroforest Land-use changes Diversity Above-ground biomass Carbon

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Fortifying Healthcare Data Security in the Cloud:A Comprehensive Examination of the EPM-KEA Encryption Protocol

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Computers, Materials & Continua 2024年第5期79卷 3397-3416页

作者： Umi Salma Basha shashi Kant Gupta Wedad Alawad SeongKi Kim Salil Bharany Computer Science and Information Technology Jazan UniversityJazanSaudi Arabia CSE Eudoxia Research UniversityNew CastleUSA Department of Information Technology College of Computer ScienceQassim UniversityBuraydahSaudi Arabia National Center of Excellence in Software Sangmyung UniversitySeoulKorea Department of Computer Science and Engineering Lovely Professional UniversityPhagwaraPunjabIndia

A new era of data access and management has begun with the use of cloud computing in the healthcare *** the efficiency and scalability that the cloud provides, the security of private patient data is still a majorconcern. Encryption, network security, and adherence to data protection laws are key to ensuring the confidentialityand integrity of healthcare data in the cloud. The computational overhead of encryption technologies could leadto delays in data access and processing rates. To address these challenges, we introduced the Enhanced ParallelMulti-Key Encryption Algorithm (EPM-KEA), aiming to bolster healthcare data security and facilitate the securestorage of critical patient records in the cloud. The data was gathered from two categories Authorization forHospital Admission (AIH) and Authorization for High Complexity *** use Z-score normalization forpreprocessing. The primary goal of implementing encryption techniques is to secure and store massive amountsof data on the cloud. It is feasible that cloud storage alternatives for protecting healthcare data will become morewidely available if security issues can be successfully fixed. As a result of our analysis using specific parametersincluding Execution time (42%), Encryption time (45%), Decryption time (40%), Security level (97%), and Energyconsumption (53%), the system demonstrated favorable performance when compared to the traditional *** suggests that by addressing these security concerns, there is the potential for broader accessibility to cloudstorage solutions for safeguarding healthcare data.

关键词： Cloud computing healthcare data security enhanced parallel multi-key encryption algorithm(EPM-KEA)

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