检索结果-南通市图书馆

Journal of Control and Decision 2023年第1期10卷 26-39页

作者： S.C.Vijay Kumar K.Karunanithi S.p.Raja S.Ramesh p.chandrasekar R.Obulupathy vel tech rangarajan dr.sagunthala r&d institute of science and technology chennaitamil naduindia school of computer science and engineering vellore institute of technologyvelloretamil naduindia

The main objective of implementing charging stations is to ensure the good charging to theElectric Vehicles by using a solar pV array which is interconnected to the battery energy storagesystems. The charging station regulates the supply voltage and frequency without the use of amechanical speed governor. It also assures that energy gained from grid or by the DG set willhave the unity power factor (UpF) when the load is nonlinear. Besides this, the point of CommonCoupling (pCC) voltage is synchronised with the grid/generator voltage in order to providecontinuous charging. In order to increase the optimal efficiency of the charging stations, thecharging stations will perform the active/reactive power transfer from the vehicle to grid, vehicleto house and vehicle to vehicle (V2V) power transfer. The operational experiment of the chargingstation is simulated and verified by using MATLAB/SIMULINK.

关键词： Electric vehicle charging station solar photo-voltaic generation energy transfer diesel-generator set fuzzy logic controller total harmonic distortion

preparation of sodium molybdate from molybdenum concentrate by microwave roasting and alkali leaching

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2024年第1期31卷 91-105页

作者： Fengjuan Zhang Chenhui Liu Srinivasakannan chandrasekar Yingwei Li Fuchang Xu School of Chemistry and Environment Yunnan Minzu UniversityKunming 650500China Chemical Engineering Department Khalifa UniversityAbu DhabiUAE Yunnan Zhong Tai Technology Co. Ltd.Kunming 650500China Yunnan Yongchang Silicon Industry Co. Ltd.Baoshan 678000China

The preparation process of sodium molybdate has the disadvantages of high energy consumption,low thermal efficiency,and high raw material requirement of molybdenum trioxide,in order to realize the green and efficient development of molybdenum concentrate resources,this paper proposes a new process for efficient recovery of molybdenum from molybdenum concentrate and preparation of sodium molybdate by microwave-enhanced roasting and alkali *** analysis indicated the feasibility of oxidation roasting of molybdenum *** effects of roasting temperature,holding time,and power-to-mass ratio on the oxidation product and leaching product sodium molybdate (Na_(2)MoO_(4)·2H_(2)O) were *** the optimal process conditions:roasting temperature of 700℃,holding time of 110 min,and power-to-mass ratio of 110 W/g,the molybdenum state of existence was converted from MoS_(2) to Mo *** process of preparing sodium molybdate by alkali leaching of molybdenum calcine was investigated,the optimal leaching conditions include a solution concentration of 2.5 mol/L,a liquid-to-solid ratio of 2 mL/g,a leaching temperature of 60℃,and leaching solution termination at pH *** optimum conditions result in a leaching rate of sodium molybdate of 96.24%.Meanwhile,the content of sodium molybdate reaches 94.08wt%after leaching and removing *** and aluminum impurities can be effectively separated by adjusting the pH of the leaching solution with sodium carbonate *** research avoids the shortcomings of the traditional process and utilizes the advantages of microwave metallurgy to prepare high-quality sodium molybdate,which provides a new idea for the highvalue utilization of molybdenum concentrate.

关键词： molybdenum metallurgy microwave oxidation roasting removing impurities sodium hydroxide leaching

Spotted Hyena-Bat Optimized Extreme Learning Machine for Solar power Extraction

在线全文

学校读者我要写书评

暂无评论

Computer Systems Science & Engineering 2023年第5期45卷 1821-1836页

作者： K.Madumathi S.chandrasekar Faculty of Electrical and Electronics Engineering Mahendra Institute of TechnologyNamakkalTamilnaduIndia Faculty of Electrical and Electronics Engineering Sona College of TechnologySalemTamilnaduIndia

Artificial intelligence,machine learning and deep learning algorithms have been widely used for Maximum power point Tracking(MppT)in solar *** the traditional MppT strategies,following of worldwide Global Maximum power point(GMpp)under incomplete concealing conditions stay overwhelming assignment and tracks different nearby greatest power focuses under halfway concealing *** advent of artificial intelligence in MppT has guaranteed of accurate following of GMpp while expanding the significant performance and efficiency of MppT under partial Shading Conditions(pSC).Still the selection of an efficient learning based MppT is complex because each model has its advantages and ***,Meta-heuristic algorithm based Learning techniques have provided better tracking efficiency but still exhibit dull performances under *** work represents an excellent optimization based on Spotted Hyena Enabled Reliable BAT(SHERB)learning models,SHERB-MppT integrated with powerful extreme learning machines to identify the GMpp with fast convergence,low steady-state oscillations,and good tracking *** testing using MATLAB-SIMULINK,with 50000 data combinations gathered under partial shade and normal *** a result of simulations,the proposed approach offers 99.7%tracking efficiency with a slower convergence *** demonstrate the predominance of the proposed system,we have compared the performance of the system with other hybrid MppT learning *** proved that the proposed cross breed MppT model had beaten different techniques in recognizing GMpp viably under fractional concealing conditions.

关键词： Global maximum power point tracking artificial intelligence machine learning deep learning spotted hyena-BAT algorithm

Indocyanine green fluorescence in gastrointestinal surgery:Appraisal of current evidence

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Surgery 2023年第12期15卷 2693-2708页

作者： Raja Kalayarasan Murugesan chandrasekar pothugunta Sai Krishna Dasarathan Shanmugam Department of Surgical Gastroenterology Jawaharlal Institute of Postgraduate Medical Education and ResearchPuducherry 605006India

Applying indocyanine green(ICG)fluorescence in surgery has created a new dimension of navigation surgery to advance in various *** research in this field is nascent and fragmented,necessitating academic efforts to gain a comprehensive *** present review aims to integrate diverse perspectives and recent advances in its application in gastrointestinal *** relevant articles were selected by using the appropriate keyword search in *** angiography and cholangiography property of ICG fluorescence is helpful in various hepatobiliary *** gastroesophageal and colorectal surgery,the lymphangiography and angiography property of ICG is applied to evaluate bowel vascularity and guide *** lack of objective parameters to assess ICG fluorescence has been the primary limitation when ICG is used to evaluate bowel *** optimum dose and timing of ICG administration need to be standardized in some new application areas in gastrointestinal *** tumor-specific ligands with fluorophores can potentially widen the fluorescence application to detect primary and metastatic gastrointestinal *** narrative review outlines prior contributions,limitations,and research opportunities for future studies across gastrointestinal *** findings of the present review would be helpful for scholars and practitioners to explore and progress in this exciting domain of gastrointestinal surgery.

关键词： Indocyanine green Fluorescence Navigation surgery Angiography Cholangiography Lymphangiography

Measurement-induced nonlocality based on affinity

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Communications in Theoretical physics 2020年第7期72卷 42-48页

作者： R Muthuganesan V K chandrasekar Centre for Nonlinear Science&Engineering School of Electrical&Electronics EngineeringSASTRA Deemed UniversityThanjavur—613401Tamil NaduIndia

Measurement-induced nonlocality(MIN),a quantum correlation measure for bipartite systems,is an indicator of maximal global effects due to locally invariant von Neumann projective *** is originally defined as the maximal square of the Hilbert-Schmidt norm of the difference between pre-and post-measurement *** this article,we propose a new form of MIN based on *** quantity satisfies all the criteria of a bona fide measure of quantum correlation *** quantity is evaluated for both arbitrary pure and 2×n dimensional(qubit-qudit)mixed *** operational meaning of the proposed quantity is interpreted in terms of the interferometric power of the quantum *** apply these results on two-qubit mixed states,such as the Werner,isotropic and Bell diagonal states.

关键词： affinity nonlocality quantum correlation local measurements

A Shoreline Change Analysis Along the Coast Between Kanyakumari and Tuticorin, India, Using Digital Shoreline Analysis System

在线全文

学校读者我要写书评

暂无评论

Geo-Spatial Information Science 2011年第4期14卷 282-293页

作者： SHEIK Mujabar chandrasekar National College of Engineering Anna University of Technology Centre for Geotechnology Manonmaniam Sundaranar University

The shoreline is one of the rapidly changing landforms in coastal *** are the key element in coastal GIS and provide the most information on coastal land form ***,accurate detection and frequent monitoring of shorelines is very essential to understand the coastal processes and dynamics of various coastal *** present study is to investigate the shoreline changes along the coast between Kanyakumari and Tuticorin of south India(where hydrodynamic and morphologic changes occur continuously after the December 2004 tsunami)by using Digital Shoreline Analysis System(DSAS),an extension of *** IRS and Landsat Satellite data(1999,2001,2003,2005,2007,and 2009)are used to extract the *** data is processed by using the ERDAS IMAGINE 9.1 software and analyzed by ArcGIS 9.2 *** rates of shoreline changes are estimated by three statistical methods,namely,End point Rate(EpR),Linear Regression Rate(LRR),and Least Me-dian of Squares(LMS)by using *** study reveals that most of the study area has undergoing *** natural and an-thropogenic processes along the coast modify the shoreline configuration and control the erosion and accretion of the coastal *** coastal zones along the estuary have experienced accretion due to the littoral *** zones with headlands have more eroded than other zones along the study *** study also shows that the coastal zones where sand is mined have relatively more rate of erosion than that of the other *** and unsustainable sand mining may also lead to severe erosion problem along this *** shoreline change rates are altered by various geological processes along the ***,the present study implies that proper beach filling and nourishment projects should be made in the study area to save from *** also indicates the advantage and suitability of DSAS to assess the shoreline changes compared with the traditional manual shoreline change ana

关键词：海岸线变化地理信息系统变化分析马里印度 ArcGIS 沿海地区线变化率

An analysis of land use development city using imagery pattern in the industrial high resolution satellite

在线全文

学校读者我要写书评

暂无评论

Journal of Geographical Sciences 2011年第1期21卷 79-88页

作者： John prince Soundranayagam p. Sivasubramanian N. chandrasekar K.S.p. Durairaj Centre for GeoTechnology Manonmaniam Sundaranar University Tirunelveli-627012 India Department of Geology V.O.Chidambaram College Tuticorin-628008 India The controller Manonmaniam Sundaranar University Tirunelveli-627012 India

The spatial differentiation of land use changes of Tuticorin is studied using high resolution LISS III satellite imagery and Maximum Likelihood algorithms. The classification accuracy of 95.2% was obtained. In this study,the land use of Tuticorin is classified as settlement,salt pan,agricultural land,wasteland,water bodies and shrubs. The settlement area is increased to 4.6 km2 during the year 2001 and 2006. The settlement area change is mainly driven by growth of industries and migration of people from peripheral villages. Shrub is increased to 3.63 km2 in the six year period. Water logging due to growth of shrubs in Tuticorin leads to several environmental and health hazard. This study warrants proper urban planning for Tuticorin for sustainable use of resource and environment.

关键词： land use urban planning remote sensing environment health hazard

Analytic Study of Magnetohydrodynamic Flow and Boundary Layer Control Over a Wedge

在线全文

学校读者我要写书评

暂无评论

Acta Mathematicae Applicatae Sinica 2008年第4期24卷 541-552页

作者： M.chandrasekar S.Baskaran Department of Mathematics Anna UniversityChennai-600 025India Department of Mathematics S.S.N.College of EngineeringKalavakkamChennai-603 110India

A genuine variational principle developed by Gyarmati, in the field of thermodynamics of irreversible processes unifying the theoretical requirements of technical, environmental and biological sciences is employed to study the effects of uniform suction and injection on MHD flow adjacent to an isothermal wedge with pressure gradient in the presence of a transverse magnetic field. The velocity distribution inside the boundary layer has been considered as a simple polynomial function and the variational principle is formulated. The Euler-Lagrange equation is reduced to a simple polynomial equation in terms of momentum boundary layer thickness. The velocity profiles, displacement thickness and the coefficient of skin friction are calculated for various values of wedge angle parameter m, magnetic parameter ξ and suction/injection parameter H. The present results are compared with known available results and the comparison is found to be satisfactory. The present study establishes high accuracy of results obtained by this variational technique.

关键词： Magnetohydrodynamics suction/injection skin friction Gyarmati's variational principle wedge parameter

Determination of Heat Transport Mechanism in Aqueous Nanofluids Using Regime Diagram

在线全文

学校读者我要写书评

暂无评论

Chinese physics Letters 2009年第12期26卷 156-159页

作者： M. chandrasekar S. SURESH Department of Mechanical Engineering National Institute of Technology Tiruchirappalli 620015 India

We provide an approximate method to determine the dominant heat transport mechanism responsible for the anomalous enhancement of thermal conductivity in aqueous nanofluids. Due to a large degree of randomness and scatter observed in the published experimental data, limits to nanofluid thermal conductivity are fixed analytically by taking into account the contribution of particle Brownian motion and clustering, and a regime diagram is developed. Experimental data from a range of independent published sources is used for validation of the developed regime diagram.

关键词： Chinese climate network complex systems small world community

Exponential H_∞ filtering analysis for discrete-time switched neural networks with random delays using sojourn probabilities

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2016年第3期59卷 387-402页

作者： CAO JinDe RAKKIYAppAN R. MAHESWARI K. chandrasekar A. Department of Mathematics Southeast University Department of Mathematics Bharathiar University

This paper is concerned with the exponential H_∞ filtering problem for a class of discrete-time switched neural networks with random time-varying delays based on the sojourn-probability-dependent method. Using the average dwell time approach together with the piecewise Lyapunov function technique, sufficient conditions are proposed to guarantee the exponential stability for the switched neural networks with random time-varying delays which are characterized by introducing a Bernoulli stochastic *** on the derived H_∞ performance analysis results, the H_∞ filter design is formulated in terms of Linear Matrix Inequalities(LMIs). Finally, two numerical examples are presented to demonstrate the effectiveness of the proposed design procedure.

关键词：随机延迟神经网络离散时间切换滤波分析线性矩阵不等式 H∞滤波器概率