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Improved deep mixed kernel randomized network for wind speed prediction

Clean Energy 2023年第5期7卷 1006-1031页

作者： vijaya krishna rayi Ranjeeta Bisoi S.P.Mishra P.K.Dash Department of EEE GMR Institute of TechnologyRajamAndhra PradeshIndia Multidisciplinary Research Cell Siksha‘O’Anusandhan Deemed to be UniversityBhubaneswarOdishaIndia

Forecasting wind speed is an extremely complicated and challenging problem due to its chaotic nature and its dependence on several atmospheric *** there are several intelligent techniques in the literature for wind speed prediction,their accuracies are not yet very ***,in this paper,a new hybrid intelligent technique named the deep mixed kernel random vector functional-link network auto-encoder(AE)is proposed for wind speed *** proposed method eliminates manual tuning of hidden nodes with random weights and biases,providing prediction model generalization and representation *** reduces reconstruction error due to the exact inversion of the kernel matrix,unlike the pseudo-inverse in a random vector functional-link network,and short-ens the execution ***,the presence of a direct link from the input to the output reduces the complexity of the prediction model and improves the prediction *** kernel parameters and coefficients of the mixed kernel system are optimized using a new chaotic sine–cosine Levy flight optimization *** lowest errors in terms of mean absolute error(0.4139),mean absolute percentage error(4.0081),root mean square error(0.4843),standard deviation error(1.1431)and index of agreement(0.9733)prove the efficiency of the proposed model in comparison with other deep learning models such as deep AEs,deep kernel extreme learning ma-chine AEs,deep kernel random vector functional-link network AEs,benchmark models such as least square support vector machine,autoregressive integrated moving average,extreme learning machines and their hybrid models along with different state-of-the-art methods.

关键词： deep neural network mixed kernel random vector functional network auto-encoder chaotic sine-cosine Levy flight optimization single and multistep wind speed prediction

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Relevance of epidemiology data in trauma management

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World Journal of Clinical Cases 2025年第9期13卷 65-67页

作者： krishna Kumar Govindarajan Department of Pediatric Surgery Jawaharlal Institute of Postgraduate Medical Education and ResearchPuducherry 605006India

Trauma is a major cause of morbidity and mortality across the globe accounting for significant health *** of trauma care revolves round prevention,planning and execution of safety *** of the actual data regarding the type of trauma,affected age group,timings of trauma occurrence,involved part of the body constitute the initial steps in the building of the composite overview of the epidemiology of *** succession,would be the measures directed towards avoidance of trauma and capacity building of trauma center.

关键词： Trauma Epidemiology Injury Prevention Triage Registry Artificial Intelligence

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ETM-IoT:Energy-Aware Threshold Model for Heterogeneous Communication in the Internet of Things

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Computers, Materials & Continua 2022年第1期70卷 1815-1827页

作者： A.vijaya krishna A.Anny Leema School of Computer Science and Engineering VIT UniversityVelloreTamilnaduIndia School of Information Technology and Engineering VIT UniversityVelloreTamilnaduIndia

The internet of things(IoT)has a wide variety of applications,which in turn raisesmany challenging *** technology enables devices to closely monitor their environment,providing context-aware intelligence based on the real-time data collected by their sensor *** IoT not only controls these devices but also monitors their user’s *** of the major issues related to IoT is the need for an energy-efficient communication protocol which uses the heterogeneity and diversity of the objects connected through the *** energy consumption is a requirement for energyconstrained nodes and outsourced *** IoT nodes deployed in different geographical regions typically have different energy *** paper focuses on creating an energy-efficient protocol for IoTwhich can deal with the clustering of nodes and the cluster head selection *** energy thresholdmodel is developed to select the appropriate cluster heads and also to ensure uniform distribution of energy to those heads andmember *** proposed model envisages an IoT network with three different types of nodes,described here as advanced,intermediate and normal *** nodes are first-level nodes,which have the lowest energy use;intermediate nodes are second-level nodes,which have a medium energy requirement;and the advanced class are thirdlevel nodes with the highest energy *** simulation results demonstrate that the proposed algorithm outperforms other existing *** tests,it shows a 26%improvement in network lifetime compared with existing algorithms.

关键词： Internet of things communication energy threshold heterogeneous network

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An Improved Sparrow Search Algorithm for Node Localization in WSN

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Computers, Materials & Continua 2022年第4期71卷 2037-2051页

作者： RThenmozhi Abdul Wahid Nasir vijaya krishna Sonthi TAvudaiappan Seifedine Kadry Kuntha Pin Yunyoung Nam Department of Computer Science and Engineering College of Engineering and TechnologySRM Institute of Science and TechnologyKattankulathur603203India Department of Electronics Communication and Engineering CMR Institute of TechnologyBengaluru560037India Department of Computer Science and Engineering Koneru Lakshmaiah Education FoundationVaddeswaram522502Andhra PradeshIndia Department of Computer Science and Engineering K.Ramakrishnan College of engineeringTiruchirappalli621112India Department of Applied Data Science Noroff University CollegeKristiansandNorway Department of ICT Convergence Soonchunhyang UniversityKorea Department of Computer Science and Engineering Soonchunhyang UniversityKorea

Wireless sensor networks(WSN)comprise a set of numerous cheap sensors placed in the target region.A primary function of the WSN is to avail the location details of the event occurrences or the node.A major challenge in WSN is node localization which plays an important role in data gathering *** GPS is expensive and inaccurate in indoor regions,effective node localization techniques are *** major intention of localization is for determining the place of node in short period with minimum *** achieve this,bio-inspired algorithms are used and node localization is assumed as an optimization problem in a multidimensional *** paper introduces a new Sparrow Search Algorithm with Doppler Effect(SSA-DE)for Node Localization in Wireless *** SSA is generally stimulated by the group wisdom,foraging,and anti-predation behaviors of ***,the Doppler Effect is incorporated into the SSA to further improve the node localization *** addition,the SSA-DE model defines the position of node in an iterative manner using Euclidian distance as the fitness *** presented SSA-DE model is implanted in MATLAB *** extensive set of experimentation is carried out and the results are examined under a varying number of anchor nodes and ranging *** attained experimental outcome ensured the superior efficiency of the SSA-DE technique over the existing techniques.

关键词： Localization wireless networks

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Non-Aligned Stagnation Point Flow of a Casson Fluid Past a Stretching Sheet in a Doubly Stratified Medium

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Fluid Dynamics & Materials Processing 2019年第3期15卷 233-251页

作者： N.vijaya G.Venkata Ramana Reddy Y.Hara krishna Koneru Lakshmaiah Education Foundation VaddeswaramGuntur522502India

This paper investigates the problem of oblique hydro magnetic stagnation point flow of an electrically conducting Casson fluid over stretching sheet embedded in a doubly stratified medium in the presence of thermal radiation and heat source/absorption with first order chemical *** is assumed that the fluid impinges on the wall *** variables were used to convert the partial differential equations to ordinary differential *** transformed ordinary differential equations are solved numerically using Runge-Kutta-Fehlberg method with shooting *** is observed that a boundary layer is formed when the stretching velocity of the surface is less than the in viscid free stream velocity at a point decreases with increase in the non-Newtonian rheology *** augmentation of the temperature is observed with the magnetic parameter,heat source parameter and thermal radiation parameter while a reverse effect with thermal stratification number,Prandtl number and the velocity ratio *** of Skin friction coefficient,Nusselt number and Sherwood number on the flow configurations for different values of pertinent parameters are portrayed graphically and *** results are compared with the published results and are found to be in good agreement with previously published results as special cases of present *** mass concentration is seen to be decrease with Schmidt number,chemical reaction parameter and solutal stratification number.

关键词： Magnetic parameter heat source prandtl number chemical reaction casson fluid free stream stagnation flow parameters

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Comparative efficacy of hyperbaric bupivacaine vs hyperbaric ropivacaine in spinal anesthesia for cesarean section:A metaanalysis

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World Journal of Methodology 2025年第2期15卷 154-165页

作者： Rishi Anand Deb Sanjay Nag Roushan Patel Prashant Sharma Vamsi krishna Uppalapati Umesh Kumar Singh Department of Anaesthesiology Tata Main HospitalJamshedpur 831001JhārkhandIndia

BACKGROUND Intrathecal bupivacaine is the traditional anesthetic drug used in spinal anesthesia for caesarean sections(CSs),but ropivacaine has emerged as a potential *** meta-analysis compares the efficacy and safety of intrathecal hyper-baric bupivacaine vs hyperbaric ropivacaine for cesarean *** To systematically evaluate and compare the efficacy and safety of intrathecal hyperbaric bupivacaine and hyperbaric ropivacaine for spinal anesthesia in *** A thorough search of electronic databases was carried out to find pertinent randomized controlled trials(RCTs)comparing intrathecal hyperbaric ropi-vacaine and hyperbaric bupivacaine during ***,Cochrane database,Google Scholar,and Scopus were searched,and papers from January 2000 to January 2024 were deemed eligible and filtered using predetermined inclusion and exclusion *** were assessed for methodological quality,and data were extracted for time to adequate anesthesia(sensory and motor blockade),duration of sensory and motor block,hemodynamic changes and side effect *** standardized mean difference with 95%CI was used for continuous *** variables were assessed using the Mantel-Haenszel test and the random effect model to compute the odds *** Total 8 RCTs were selected from a pool of 119 search results for *** meta-analysis evaluated pooled effect sizes and assessed heterogeneity among the *** primary objective was to compare key outcomes to identify any significant variances in efficacy and safety profiles between two local *** analysis revealed that the difference in the onset of sensory blockade between the two local anesthetics was statistically insignificant(P=0.1586).However,the onset of motor blockade appeared to be faster with bupivacaine(P=0.03589).Additionally,the regression of sensory and motor blockade occurred earlier in the ropivacaine ***,the duration of the first analgesic

关键词： Ropivacaine Bupivacaine Anesthesia Spinal Cesarean section Meta-analysis

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Biomass production from microalgae Chlorella grown in sewage,kitchen wastewater using industrial CO_(2)emissions:Comparative study

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Carbon Resources Conversion 2019年第2期2卷 126-133页

作者： P.Kiran Kumar S.vijaya krishna S.Swami Naidu Kavita Verma D.Bhagawan V.Himabindu Centre for Alternative Energy Options Institute of Science and TechnologyJawaharlal Nehru Technological University HyderabadKukatpallyHyderabad 500085TelanganaIndia Centre for Biotechnology Institute of Science and TechnologyJawaharlal Nehru Technological University HyderabadKukatpallyHyderabad 500085TelanganaIndia

Microalgae cultivation using organic wastewater like kitchen wastewater(KWW)and sewage wastewater(SWW)are recommended for wastewater treatment along with simultaneous biomass production which is a cost effective *** is rich in nutrients which might be an efficient wastewater feedstock for microalgae cultivation to achieve reasonably high biomass yield for energy *** has not been investigated extensively for microalgae cultivation till now because of high concentration of ammonia as it could inhibit algae *** order to make KWW suitable for microalgae growth,a common method is to dilute with ***,in the present study,KWW was diluted with water at dilution ration 1:1 and compared with SWW for microalgae biomass growth,biomass yields and nutrient removal efficiency specifically using *** KWW and SWW showed highest biomass productivity in mixotrophic cultivation *** average biomass productivity in SWW was 0.6 g/L which was higher when compared to *** infrared spectroscopy(FTIR)of algal biomass revealed the presence of certain organic compound groups such as eOH,eCOOH,NH_(2),and ■*** was concluded from the results that Chlorella was very effective in the treatment of KWW,SWW and industrial flue gas on the other hand the biomass obtained is a sustainable green energy source for biofuels.

关键词： Kitchen wastewater(KWW) Sewage wastewater(SWW) Flue gas Microalgae Chlorella

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Design and Analysis of a Power Efficient Linearly Tunable Cross-Coupled Transconductor Having Separate Bias Control

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Circuits and Systems 2012年第1期3卷 99-106页

作者： vijaya Bhadauria krishna Kant Swapna Banerjee Electronics and Communication Engineering Department Motilal Nehru National Institute of Technology Department of Computer Engineering and Application GLA University Electronics and Electrical Communication Engineering Department Indian Institute of

A common current source, generally used to bias cross-coupled differential amplifiers in a transconductor, controls third harmonic distortion (HD3) poorly. Separate current sources are shown to provide better control on HD3) . In this paper, a detailed design and analysis is presented for a transconductor made using this biasing technique. The transconductor, in addition, is made to offer high Gm, low power dissipation and is designed for linearly tunable Gm with current mode load as one of the applications. The circuit exhibits HD3) of less than –43.7 dB, high current efficiency of 1.18 V-1 and Gm of 390 μS at 1 VGp-p @ 50 MHz. UMC 0.18 μm CMOS process technology is used for simulation at supply voltage of 1.8 V.

关键词： Analog electronics low power Analog CMOS Circuit Operational Transconductance Amplifier (OTA) Multiple-output OTA (MOTA) MOS Transconductors linearly tunable Gm Current efficiency Linearization Techniques Harmonic Distortion Analysis

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Radiation-absorption,chemical reaction,Hall and ion slip impacts on magnetohydrodynamic free convective flow over semi-infinite moving absorbent surface

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Chinese Journal of Chemical Engineering 2021年第6期34卷 40-52页

作者： M.Veera krishna Department of Mathematics Rayalaseema UniversityKurnoolAndhra Pradesh 518007India

The investigation of radiation-absorption,chemical reaction,Hall and ion-slip impacts on unsteady MHD free convective laminar flow of an incompressible viscous,electrically conducting and heat generation/absorbing fluid enclosed with a semi-infinite porous plate within a rotating frame has been *** plate is assumed to be moving with a constant velocity in the direction of fluid movement.A uniform transverse magnetic field is applied at right angles to the porous surface,which is absorbing the fluid with a suction velocity changing with *** non-dimensional governing equations for present investigation are solved analytically making use of two term harmonic and non-harmonic *** graphical results of velocity,temperature and concentration distributions on the analytical solutions are displayed and discussed with reference to pertinent *** is found that the velocity profiles decreased with an increasing in Hartmann number,rotation parameter,the Schmidt number,heat source parameter,while it increased due to an increase in permeability parameter,radiation-absorption parameter,Hall and ion slip ***,the temperature profile is an increasing function of radiation-absorption parameter,whereas an increase in chemical reaction parameter,the Schmidt number Sc or frequency of oscillations decrease the temperature profile on ***,it is found that the concentration profile is decreased with an escalating in the Schmidt number or the chemical reaction parameter.

关键词： Chemical reaction Free convection Heat source Heat transfer Mass diffusion Radiation absorption

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Implications of MMP-12 in the pathophysiology of ischaemic stroke

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Stroke & Vascular Neurology 2024年第2期9卷 97-107页

作者： krishna Kumar Veeravalli Cancer Biology and Pharmacology University of Illinois College of Medicine at PeoriaPeoriaIllinoisUSA

This article focuses on the emerging role of matrix metalloproteinase-12(MMP-12)in ischaemic stroke(IS).MMP-12 expression in the brain increases dramatically in animal models of IS,and its suppression reduces brain damage and promotes neurological,sensorimotor and cognitive functional ***,MMP-12 could represent a potential target for the management of *** article provides an overview of MMP-12 upregulation in the brain following IS,its deleterious role in the post-stroke pathogenesis(blood-brain barrier disruption,inflammation,apoptosis and demyelination),possible molecular interactions and mechanistic insights,its involvement in post-ischaemic functional deficits and recovery as well as the limitations,perspectives,challenges and future directions for further *** to testing any MMP-12-targeted therapy in patients with acute IS,additional research is needed to establish the effectiveness of MMP-12 suppression against IS in older animals and in animals with *** article also examines the clinical implications of suppressing MMP-12 alone or in combination with MMP-9 for extending the currently limited tissue plasminogen activator therapy time *** of MMP-12 is expected to have a profound influence on the therapeutic management of IS in the future.

关键词： involvement alone directions

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