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Calculating the transient behavior of grounding systems using inverse Laplace transform

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Journal of Zhejiang University-Science C(Computers and Electronics) 2011年第3期12卷 250-262页

作者： Nabiollah RAMEZANI Seyed Mohammad SHAHRTASH behshahr branch Iran University of Science and TechnologyBehshahr 47137Iran Center of Excellence for Power Systems Automation and Operation Department of Electrical EngineeringIran University of Science and TechnologyTehran 16844Iran

This paper deals with a unified and novel approach for analyzing the frequency and time domain performance of grounding *** proposed procedure is based on solving the full set of Maxwell's equations in the frequency domain,and enables the exact computation of very near fields at the surface of the grounding grid,as well as far fields,by simple and accurate closed-form expressions for solving Sommerfeld *** addition,the soil ionization is easily considered in the proposed *** frequency domain responses are converted to the time domain by fast inverse Laplace *** results are validated and have shown acceptable accuracy.

关键词： Electromagnetic field Near-field computation High frequency performance Soil ionization Grounding system Fast inverse Laplace transform

Hydroxyapatite/alumina nanocrystalline composite powders synthesized by sol–gel process for biomedical applications

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International Journal of Minerals,Metallurgy and Materials 2014年第10期21卷 1033-1036页

作者： S.Khors M.H.Fathi S.Salehi S.Amirkhanlou Young Researchers and Elite Club Najafabad Branch Islamic Azad University Department of Materials Engineering Isfahan University of Technology German Textile Research Centre North-West (DTNW) University of Duisburg-Essen Young Researchers and Elite Club Behshahr Branch Islamic Azad University

Hydroxyapatite/alumina nanocrystalline composite powders needed for various biomedical applications were successfully synthe- sized by sol-gel process. Structural and morphological investigations of the prepared composite powders were performed using X-ray dif- fractometer （XRD）, scanning electron microscopy （SEM）, X＇Pert HighScore software, and Clemex Vision image analysis software. The re- suits show that the crystallite size of the obtained composite powders is in the range of 25 to 90 nm. SEM evaluation shows that the obtained composite powders have a porous structure, which is very useful for biomedical applications. The spherical nanoparticles in the range of 60 to 800 nm are embedded in the agglomerated clusters of the prepared composite powders.

关键词： nanocrystalline materials biomaterials hydroxyapatite alumina sol-gel process nanostructures

Theoretical Study of Halogen Effect in Isomerization of 2-Halo-[9]-annulen Anion at the DFT Level

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Chinese Journal of Structural Chemistry 2011年第6期30卷 906-912页

作者： AHMADREZA Bekhradnia SATTAR Arshadi Pharmaceutical Sciences Research Center Department of Medicinal ChemistryMazandaran University of Medical Sciences Department of Chemistry Payame Noor UniversityBehshahr Unit

Cis-trans isomerization of [9]-annulenanion（1） and its 2-fluoro-,2-chloro-and 2-bromo-derivatives（2,3 and 4,respectively） were investigated at the HF/6-31G＊ and B3LYP/6-311＋＋G＊＊ levels of ***,cis,cis,cis structures appear more stable than their corresponding cis,cis,cis,*** relative height of energy barriers for cis-trans isomerization is：2cis 〉1cis 〉3cis〉 *** trend for the reverse trans-cis isomerization follows the electronegativity of the substituent at C-2（2trans 3trans 4trans 1trans）.

关键词： isomerization halogen effects -annulen anion DFT

Application of Homotopy Analysis Method for Solving Systems of Volterra Integral Equations

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Advances in Applied Mathematics and Mechanics 2012年第1期4卷 36-45页

作者： M.Matinfar M.Saeidy J.Vahidi Department of Mathematics and Computer Science University of MazandaranBabolsarIran Department of Mathematics Iran University of Science and TechnologyBehshahrIran

In this paper,we prove the convergence of homotopy analysis method(HAM).We also apply the homotopy analysis method to obtain approximate analytical solutions of systems of the second kind Volterra integral *** HAM solutions contain an auxiliary parameter which provides a convenient way of controlling the convergence region of series *** is shown that the solutions obtained by the homotopy-perturbation method(HPM)are only special cases of the HAM *** examples are given to illustrate the efficiency and implementation of the method.

关键词： Homotopy analysis method homotopy perturbation method systems of Volterra integral equations

Modeling of GPS SPS Timing Error using Multilayered Neural Network

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Modeling of GPS SPS Timing Error using Multilayered Neural N...

Economic modeling of mechanized and semi-mechanized rainfed wheat production systems using multiple linear regression model

第八届国际信号处理国际会议

作者： M.R.Mosavi Department of Electrical Engineering Behshahr University of Science and TechnologyBehshahr 48518-78413Iran

＜正＞GPS is not only an accurate navigation system;it also delivers time with unprecedented accuracy. In this paper, a Multilayered Neural Network （MNN） based approach for forecast and improvement of GPS Standard Positioning Service （SPS） timing error is presented. The proposed MNN is trained using Back-Propagation （BP） and Extended Kalman Filter （EKF） training algorithms. The performance of these proposed MNNs is demonstrated by showing its effectiveness in GPS timing error prediction of a low cost GPS receiver. The tests results on the collected real data show that GPS timing error RMS can reduce from 300nsec and 200nsec to less than 120nsec and 43nsec by using MNN prediction, before and after SA, respectively. The experimental results emphasize that performance of MNN based on the EKF training algorithm is better than BP.

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Information Processing in Agriculture 2020年第1期7卷 30-40页

作者： Mobin Amoozad-Khalili Reza Rostamian Mahdi Esmaeilpour-Troujeni Armaghan Kosari-Moghaddam Department of Agricultural Economic Qaemshahr BranchIslamic Azad UniversityIran Department of Biosystems Engineering Ferdowsi University of MashhadMashhadIran Department of Biosystems Engineering University of TabrizTabrizIran

Mathematical modeling of economic indices is a challenging topic in crop production *** present study aimed to model the economic indices of mechanized and semimechanized rainfed wheat production systems using various multiple linear regression *** study area was behshahr County located in the east of Mazandaran Province,Northern *** statistical population included all wheat producers in behshahr County in 2016/17 crop *** input variables were human labor,machinery,diesel fuel,chemical(chemical fertilizers and chemical pesticides)costs,and the income was considered to be the *** results showed that the cost of wheat production in the semimechanized system was higher than that of the mechanized *** both systems,the highest cost was related to agricultural machinery ***,seed cost was lower in the mechanized system than that of the semi-mechanized *** net return indicator was 993.68$ha1 and 626.71$ha1 for the mechanized and semi-mechanized systems,*** average benefit to cost ratio was 3.46 and 2.40 for the mechanized and semi-mechanized systems,respectively,demonstrating the greater profitability of the mechanized *** results of the evaluation of five types of regression models including the Cobb-Douglas,linear,2FI,quadratic and pure-quadratic for the mechanized and semi-mechanized production systems indicated that in the developed Cobb-Douglas model,the R2-value was higher than that of the quadratic model while RMSE and MAPE of the quadratic model were determined to be smaller than that of the Cobb-Douglas ***,the best model to investigate the relationship between input costs and the income of wheat production in both mechanized and semi-mechanized systems was the quadratic model.

关键词： Rainfed wheat Economic modeling Multiple linear regression model Production costs

Swirling flow and capillary diameter effect on the performance of an active dry powder inhalers

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Medicine in Novel Technology and Devices 2023年第2期18卷 215-225页

作者： Mohammad Hasan Taheri Nematollah Askari Yaning Feng Malikeh Nabaei Mohammad S.Islam Ali Farnoud Xinguang Cui Department of Mechanical Engineering Faculty of Imam KhomeiniBehshahr BranchTechnical and Vocational University(TVU)MazandaranIran School of Aerospace Engineering Huazhong University of Science and TechnologyWuhanChina Faculty of Biomedical Engineering Amirkabir University of Technology(Tehran Polytechnic)TehranIran School of Mechanical and Mechatronic Engineering University of Technology Sydney(UTS)15 BroadwayUltimoNSW2007Australia Computational Health Center Helmholtz MunichMunichGermany

For patients with lung disease,dry powder inhalers(DPI)are profoundly *** current study introduces and develops a series of dry powder inhalers(DPIs).A capsule-based(size 0)active DPI was *** study aims to investigate whether swirling flow and outlet capillary diameter(dc_out)affect the percentage of emitted doses(ED)released from the *** vanes were added to the capillary inlet to produce a swirling *** fluid dynamics(CFD)was applied to simulate the *** results were compared with previous in vitro and numerical studies to validate the *** on the derived results,the small swirl parameter(SP)enhances the secondary flow and recirculation *** increases the central jet flow,which increases the ED value by about 5–20%compared to no-swirl ***,as the airflow rate increases,the recirculation zone enlarges,vorticities become dominant,and asymmetrical flow patterns ***,ED%drops significantly(more than 50%).As d_(c_out)decreases,the vorticities around the outlet capillary become more potent,which is ***,the emptying of the capsule does not happen *** research provides a perspective on the device's design and DPI performance.

关键词： Computational fluid dynamics Dry powder inhalers Swirling flow

CEPC Technical Design Report

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Radiation Detection Technology and Methods 2024年第1期8卷 I0003-I0016,1-1091页

作者： Waleed Abdallah Tiago Carlos Adorno de Freitas Konstantin Afanaciev Shakeel Ahmad Ijaz Ahmed Xiaocong Ai Abid Aleem Wolfgang Altmannshofer Fabio Alves Weiming An Rui An Daniele Paolo Anderle Stefan Antusch Yasuo Arai Andrej Arbuzov Abdesslam Arhrib Mustafa Ashry Sha Bai Yu Bai Yang Bai Vipul Bairathi Csaba Balazs Philip Bambade Yong Ban Tripamo Bandyopadhyay Shou-Shan Bao Desmond P.Barber Ayse Bat Varvara Batozskaya Subash Chandra Behera Alexander Belyaev Michele Bertucci Xiao-Jun Bi Yuanjie Bi Tianjian Bian Fabrizio Bianchi Thomas Biekotter Michela Biglietti Shalva Bilanishvili Deng Binglin Denis Bodrov Anton Bogomyagkov Serge Bondarenko Stewart Boogert Maarten Boonekamp Marcello Borri Angelo Bosotti Vincent Boudry Mohammed Boukidi Igor Boyko Ivanka Bozovic Giuseppe Bozzi Jean-Claude Brient Anastasiia Budzinskaya Masroor Bukhari Vladimir Bytev Giacomo Cacciapaglia Hua Cai Wenyong Cai Wujun Cai Yijian Cai Yizhou Cai Yuchen Cai Haiying Cai Huacheng Cai Lorenzo Calibbi Junsong Cang Guofu Cao Jianshe Cao Antoine Chance Xuejun Chang Yue Chang Zhe Chang Xinyuan Chang Wei Chao Auttakit Chatrabhuti Yimin Che Yuzhi Che Bin Chen Danping Chen Fuqing Chen Fusan Chen Gang Chen Guoming Chen Hua-Xing Chen Huirun Chen Jinhui Chen Ji-Yuan Chen Kai Chen Mali Chen Mingjun Chen Mingshui Chen Ning Chen Shanhong Chen Shanzhen Chen Shao-Long Chen Shaomin Chen Shiqiang Chen Tianlu Chen Wei Chen Xiang Chen Xiaoyu Chen Xin Chen Xun Chen Xurong Chen Ye Chen Ying Chen Yukai Chen Zelin Chen Zilin Chen Gang Chen Boping Chen Chunhui Chen Hok Chuen Cheng Huajie Cheng Shan Cheng Tongguang Cheng Yunlong Chi Pietro Chimenti Wen Han Chiu Guk Cho Ming-Chung Chu Xiaotong Chu Ziliang Chu Guglielmo Coloretti Andreas Crivellin Hanhua Cui Xiaohao Cui Zhaoyuan Cui Brunella D'Anzi Ling-Yun Dai Xinchen Dai Xuwen Dai Antonio De Maria Nicola De Filippis Christophe De La Taille Francesca De Mori Chiara De Sio Elisa Del Core Shuangxue Deng Wei-Tian Deng Zhi Deng Ziyan Deng Bhupal Dev Tang Dewen Biagio Di Micco Ran Ding Siqin Dingl Yadong Ding Haiyi Dong Jianin AGH University of Science and Technology Faculty of Physics and Applied Computer ScienceKrakow Anhui University HefeiAnhui Applied Physics Department Federal Urdu University of ArtsScience and TechnologyIslamabad Banaras Hindu University Institute of ScienceVaranasi Bandirma Onyedi Eylul University Bandirma Beihang University Beijing Beijing Computational Science Research Center Beijing Beijing Conveyi LTD Beijing Beijing Glass Research Institute Co. LtdBeijing Beijing Institute of Technology Beijing Beijing Normal University Beijing Brown University ProvidenceRI Budker Institute of Nuclear Physics Novosibirsk Cadi Ayyad University Laboratory of Fundamental and Applied PhysicsPolydisciplinary FacultyMarrakech Cairo University Giza Center for Theory and Computation National Tsing Hua UniversityHsinchu Central China Normal University WuhanHubei Central South University ChangshaHunan Centro de Fisica Teorica de Particulas Universidade Tecnica de LisboaLisboa Chengdu KaitengSifang Digital Radio&TV Equipment Co. LtdChengduSichuan China academy of engineering physics MianyangSichuan China building materials academy Beijing China Center of Advanced Science and Technology Beijing China Institute of Atomic Energy Beijing China Jiliang University HangzhouZhejiang China Nuclear Instrument CO. LTDBeijing China University of Geosciences Beijing China University of Geosciences WuhanHubei China University of Mining and Technology XuzhouJiangsu China West Normal University NanchongSichuan Chongqing University Department of PhysicsChongqing Chulalongkorn University Bangkok City University of Hong Kong Department of PhysicsHong Kong Cockcroft Institute Daresbury Cornell University IthacaNY CPPM(AMU/IPhU&CNRS/INP) Marseille Dalian Minzu University DalianLiaoning Dalian University of Technology Department of PhysicsDalian Deutsches Elektronen-Synchrotron DESY Hamburg Dzhelepov Laboratory of Nuclear Problems of Joint Institute for Nuclear Research(DLNP JINR) Dubna East China University Of Science And Technol

The Circular Electron Positron Collider(CEPC)is a large scientific project initiated and hosted by China,fostered through extensive collaboration with international *** complex comprises four accelerators:a 30 GeV Linac,a 1.1 GeV Damping Ring,a Booster capable of achieving energies up to 180 GeV,and a Collider operating at varying energy modes(Z,W,H,and tt).The Linac and Damping Ring are situated on the surface,while the subterranean Booster and Collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential Super Proton Proton Collider(SPPC).The CEPC primarily serves as a Higgs *** its baseline design with synchrotron radiation(SR)power of 30 MW per beam,it can achieve a luminosity of 5×10^(34)cm^(-2)s^(-1)per interaction point(IP),resulting in an integrated luminosity of 13 ab^(-1)for two IPs over a decade,producing 2.6 million Higgs *** the SR power to 50 MW per beam expands the CEPC's capability to generate 4.3 million Higgs bosons,facilitating precise measurements of Higgs coupling at sub-percent levels,exceeding the precision expected from the HL-LHC by an order of *** Technical Design Report(TDR)follows the Preliminary Conceptual Design Report(Pre-CDR,2015)and the Conceptual Design Report(CDR,2018),comprehensively detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,R&D and prototyping efforts,and associated civil engineering ***,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection *** is anticipated to begin around 2027-2028,pending government approval,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2030s.

关键词： initiated exceeding precise