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Hybrid optimization algorithm for modeling and management of micro grid connected system

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Frontiers in Energy 2014年第3期8卷 305-314页

作者： kallol ROY Kamal Krishna MANDAL Faculty of Electrical Engineering University Institute of Technology University of Burdwan Burdwan 713104 India

In this paper, a hybrid optimization algorithm is proposed for modeling and managing the micro grid （MG） system. The management of distributed energy sources with MG is a multi-objective problem which consists of wind turbine （WT）, photovoltaic （PV） array, fuel cell （FC）, micro turbine （MT） and diesel generator （DG）. Because, perfect economic model of energy source of the MG units are needed to describe the operating cost of the output power generated, the objective of the hybrid model is to minimize the fuel cost of the MG sources such as FC, MT and DG. The problem formulation takes into consideration the optimal configuration of the MG at a minimum fuel cost, operation and maintenance costs as well as emissions reduction. Here, the hybrid algorithm is obtained as artificial bee colony （ABC） algorithm, which is used in two stages. The first stage of the ABC gets the optimal MG configuration at a minimum fuel cost for the required load demand. From the minimized fuel cost functions, the operation and maintenance cost as well as the emission is reduced using the second stage of the ABC. The proposed method is implemented in the Maflab/ Simulink platform and its effectiveness is analyzed by comparing with existing techniques. The comparison demonstrates the superiority of the proposed approach and confirms its potential to solve the problem.

关键词： micro grid (MG) multi-objective function,artificial bee colony (ABC) fuel cost operation andmaintenance cost

Development of the Berezin Number Inequalities

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Acta Mathematica Sinica,English Series 2023年第7期39卷 1219-1228页

作者： Pintu BHUNIA Anirban SEN kallol PAUL Department of Mathematics Jadavpur UniversityKolkata 700032West BengalIndia

We present new bounds for the Berezin number inequalities which improve on the existing *** also obtain bounds for the Berezin norm of operators as well as the sum of two operators.

关键词： Berezin symbol Berezin number reproducing kernel Hilbert space

Water quality prediction of copper-molybdenum miningbeneficiation wastewater based on the PSO-SVR model

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环境科学与工程前沿(英文) 2023年第8期17卷 81-94页

作者： Xiaohua Fu Qingxing Zheng Guomin Jiang kallol Roy Lei Huang Chang Liu Kun Li Honglei Chen Xinyu Song Jianyu Chen Zhenxing Wang Ecological Environment Management and Assessment Center Central South University of Forestry and TechnologyChangsha 410004China State Environmental Protection Key Laboratory of Water Environmental Simulation and Pollution Control South China Institute of Environmental SciencesMinistry of Ecology and EnvironmentGuangzhou 510655China Chinese Non-Ferrous Industrial Engineering Center of Pollution Control Technology&Equipment Science Environment Protection Co.Ltd.Changsha 410036China Institute of Computer Science University of TartuTartu 51009Estonia School of Environmental Science and Engineering Guangzhou UniversityGuangzhou 510006China A.B Freeman School of Business Tulane UniversityNew OrleansLA 70118USA Guangzhou Huacai Environmental Protection Technology Co. Ltd.Guangzhou 511480China

The mining-beneficiation wastewater treatment is highly complex and *** factors like influent quality,flow rate,pH and chemical dose,tend to restrict the effluent effectiveness of miningbeneficiation wastewater *** oxygen demand(COD)is a crucial indicator to measure the quality of mining-beneficiation *** COD concentration accurately of miningbeneficiation wastewater after treatment is essential for achieving stable and compliant *** reduces environmental risk and significantly improves the discharge quality of *** paper presents a novel AI algorithm PSO-SVR,to predict water *** optimization of our proposed model PSO-SVR,uses particle swarm optimization to improve support vector regression for COD *** generalization capacity tested on out-of-distribution(OOD)data for our PSOSVR model is strong,with the following performance metrics of root means square error(RMSE)is 1.51,mean absolute error(MAE)is 1.26,and the coefficient of determination(R2)is *** compare the performance of PSO-SVR model with back propagation neural network(BPNN)and radial basis function neural network(RBFNN)and shows it edges over in terms of the performance metrics of RMSE,MAE and R2,and is the best model for COD prediction of mining-beneficiation *** is because of the less overfitting tendency of PSO-SVR compared with neural network *** proposed PSO-SVR model is optimum for the prediction of COD in copper-molybdenum mining-beneficiation wastewater *** addition,PSO-SVR can be used to predict COD on a wide variety of wastewater through the process of transfer learning.

关键词： Chemical oxygen demand Mining-beneficiation wastewater treatment Particle swarm optimization Support vector regression Artificial neural network

Evaluation of the etiologies and rehabilitation status of patients with blindness: A prospective observational study

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Journal of Integrative Nursing 2023年第4期5卷 286-291页

作者： Sarmistha DAS Pankaj Kumar HALDER Suchidipa RAY Akholu VADEO kallol PAUL Sneha SARKAR Department of Ophthalmology College of Medicine and Sagore Dutta HospitalKolkataWest BengalIndia Department of Pediatric Surgery R.G.Kar Medical CollegeKolkataWest BengalIndia Department of Pediatric Medicine College of Medicine and Sagore Dutta HospitalKolkataWest BengalIndia Department of Pediatric Medicine R.G.Kar Medical CollegeKolkataWest BengalIndia

Objective:Preventive measures and appropriate rehabilitation are important in reducing the social burden of *** study was to evaluate the etiologies,proportions,and level of rehabilitation for patients with *** and Methods:A prospective observational study with 1000 visually impaired patients was *** data regarding age,gender,socioeconomic status(SES),etiologies,curable or incurable blindness(IB),treatments,awareness,and state of rehabilitation were collected and ***:The ratio of curable to IB was 0.82:*** proportion of blindness rises after 40,even while the proportion of curable blindness(CB)increases after *** male–female ratios were 1.25:1 and 1:1.66 in the cases of CB and IB,*** the other hand,the male–female ratio for childhood blindness was 1.66:***(78.22%)were the most common cause of CB,whereas diabetic retinopathy(24%),corneal opacity(17.5%),and trauma(12.4%)were causes of *** with illiteracy,low SES,and female gender were more likely to develop *** were low enrollment rates at the blind school and poor rehabilitation,mainly because of a lack of ***:Diabetic retinopathy,corneal opacity,and trauma are the major causes of *** and poor rehabilitation were more profound in women and were associated with illiteracy,low SES,and a lack of awareness.

关键词： Age awareness blindness curable incurable rehabilitation socioeconomic status

A Randomized Control Trial Comparing Direct Stripping and Bipolar Electrocoagulation for Laparoscopic Endometriotic Cystectomy-Surgical and Histopathological Aspects

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International Journal of Clinical Medicine 2011年第2期2卷 69-74页

作者： kallol Kumar Roy Shilpa Singla Hemapriya Chawla Jinee Baruah Jai Bhagwan Sharma Sunesh Jain India Institute of Medical Sciences

The present study compared two different techniques of endometriotic cystectomy at the hilus : continuation of strip-ping and bipolar elctrocoagulation and cuttin . This was a randomized controlled study was done on 64 patients, who had laparoscopically confirmed endometriomas > 3 cm in diameter. Endometriotic cystectomy was initiated by excision of a circular rim of tissue at the original adhesion site followed by stripping and randomization was done at the ovarian hilum into 2 groups. In Group I surgery was completed by continuation of stripping and in group II surgery was completed by bipolar coagulation and cutting with scissors. Operative time and operative difficulty were evaluated at both steps by the same surgeon. Histopathology confirmation of the loss of normal ovarian tissue was recorded in the excised cyst and at the hilus separately. Data was analysed using Stata software, fisher’s exact test was employed to assess operative difficulty and Kruskal-Wallis test was used to evaluate ovarian tissue quality. The mean operating time was reported to be significantly lesser in the coagulation and cutting group. The operative difficulty was comparable in two groups. The number of primordial follicles sacrificed showed no significant difference in both groups. Complication rate in terms of hemorrhage was higher in the direct stripping group.

关键词： Endometriosis Laparoscopic Cystectomy Strippin Operative Time