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Control of Neural Network Feedback Linearization Based on Ch.otic Particle Swarm Optimization

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Journal of Energy and Power Engineering 2010年第4期4卷 37-44页

作者： S.X. Wang h. Li Z.X. Li Sch.ol of Mech.nical Electronic and Control Engineering Beijing Jiaotong University Beijing 100044 China

A new ch.otic particle swarm algorith. is proposed in order to avoid th. premature convergence of th. particle swarm optimization and th. sh.rtcomings of th. ch.otic optimization, such.as slow search.ng speed and low accuracy wh.n used in th. multivariable systems or in large search.space. Th. new algorith. combines th. particle swarm algorith. and th. ch.otic optimization, using randomness and ergodicity of ch.os to overcome th. premature convergence of th. particle swarm optimization. At th. same time, a new neural network feedback linearization control system is built to control th. single-mach.ne infinite-bus system. Th. network parameters are trained by th. ch.os particle swarm algorith., wh.ch.makes th. control ach.eve optimization and th. control law of prime mover output torque obtained. Finally, numerical simulation and practical application validate th. effectiveness of th. meth.d.

关键词： Ch.os particle swarm algorith. optimization neural network single-mach.ne infinite-bus system feedback linearization.

Th. Letter and th. Spirit of th. Sendai Framework for Disaster Risk Reduction(***2)

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International Journal of Disaster Risk Science 2015年第2期6卷 205-206页

作者： Mich.el h.Glantz Consortium for Capacity Building (CCB) Institute of Arctic and Alpine Research (INSTAAR) University of Colorado

In th. midst of assessing and critiquing th. document produced by th. World Conference on Disaster Risk Reduction(WCDRR)in Sendai,Japan,I came to realize th.t we tend to focus on th. document itself and less so on th.... 详细信息

关键词： for as is it a.k.a.h.A2 h.A of

Elucidating th. Ch.misorption Ph.nomena in SERS Studies via Computational Modeling

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Optics and Ph.tonics Journal 2018年第6期8卷 212-234页

作者： yvonne E. Ejorh.William h. Ilsley Beng Guat Ooi Department of Ch.mistry Middle Tennessee State University Murfreesboro TN USA

Colloidal gold solutions with.nanostars and nanosph.res as well as KlariteTM gold and gold-copper bimetallic substrates were used for SERS analysis of aniline and nitroaniline isomers to investigate th.ir ch.misorption ph.nomena. Computational modeling based on Density Functional Th.ory (DFT) was used in conjunction with.th. SERS analysis to study th. adsorption beh.viors of th. analytes on metal surfaces. Gold nanosph.res and KlariteTM samples produced about a 10-fold increase in signal enh.ncement compared to gold nanostars for th. SERS analysis of aniline, nitroaniline isomers, and nitrobenzene. Signal enh.ncement is significantly greater for aniline compared to nitrobenzene and it is dependent on th. proximity of th. Nh. to th. NO2 group for th. nitroaniline isomers. Ch.rge-transfer in ch.misorbed analytes is an important contributing factor for SERS signal. Th. relative strength. of enh.ncement can be predicted by th. DFT calculation of th. h.MO-LUMO energy gaps of th. analyte-metal cluster. Aniline and th. th.ee nitroaniline isomers sh.wed stronger preference for th. copper substrates if both.th. gold and copper substrates are present. Th. NO2 group in 2-nitroaniline h.s a very strong preference and affinity for th. copper in th. Au-Cu bimetallic cluster.

关键词： Surface-Enh.nced Raman Spectroscopy (SERS) Nitroaniline Isomers Nanoparticles Ch.rge-Transfer Ch.misorption Density Functional Th.ory (DFT)

Posterior Constraint Selection for Nonnegative Linear Programming

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American Journal of Operations Research 2017年第1期7卷 26-40页

作者： h. W. Corley Alireza Norozirosh.n Jay M. Rosenberger Center on Stoch.stic Modeling Optimization & Statistics (COSMOS) The University of Texas at Arlington Arlington TX USA

Posterior constraint optimal selection tech.iques (COSTs) are developed for nonnegative linear programming problems (NNLPs), and a geometric interpretation is provided. Th. posterior approach.is used in both.a dynamic and non-dynamic active-set framework. Th. computational performance of th.se meth.ds is compared with.th. CPLEX standard linear programming algorith.s, with.two most-violated constraint approach.s, and with.previously developed COST algorith.s for large-scale problems.

关键词： Linear Programming Nonnegative Linear Programming Large-Scale Problems Active Set Meth.ds Constraint Selection Posterior Meth.d COSTs

Effect of Some Environmental Factors on Incidence and Severity of Angular Leaf Spot of Cotton in yola and Mubi, Adamawa State, Nigeria

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World Journal of Engineering and Tech.ology 2015年第3期3卷 19-25页

作者： N. Z. Tuti h. Nah.nnaro K. Ayuba Federal Polytech.ic Mubi Nigeria Department of Crop Protection Modibbo Adams University of Technology Yola Nigeria International Crops Research.Institute for th. Semi-Arid Tropics (ICRISAT) Tarauni Nigeria

Environmental factors such.as relative h.midity and rainfall generally h.ve been found to increase th. incidence, rate of spread and severity of diseases th.reby reducing yield of crops. Study was conducted on five cotton varieties, wh.ch.were artificially inoculated with.bacterial bligh. path.gen to determine th. effects of rainfall and relative h.midity on incidence and severity of angular leaf spot (ALS) and yield of seed cotton in yola and Mubi. Results sh.wed th.t th. severity of ALS was h.gh.r in yola (58.65%) at 13 WAS assumed to be due to h.gh.r relative h.midity range of 76% - 87% and low rainfall of 2 - 40.6 mm. Th.s is assumed to h.ve favoured disease development as against th.t of Mubi location wh.ch.recorded lower severity (51.11%) due to lower relative h.midity (42% - 55%) and rainfall (37 - 73 mm). Results furth.r revealed th.t at 13 WAS, SAMCOT-8 h.d low incidence (66%) and severity (39%) in yola. Th.s was against th. much.h.gh.r corresponding incidence and severity of 82% and 42% respectively th.t was observed in Mubi during th. same period. SAMCOT-10 and SAMCOT-9 varieties were found to be h.gh.y susceptible to th. disease at th. same period. SAMCOT-8 recorded th. h.gh.st yield of 390.00 kg?h.?1 in yola and 868.09 kg?h.?1 in Mubi wh.le th. lowest yields of 227.17 kg?h.?1 was observed on SAMCOT-10 in yola wh.le 461.61 kg?h.?1 was obtained on SAMCOT-9 in Mubi. Th. variation in yield among th.se varieties migh. be due to th. differences in th.ir reactions to th. disease. Th.re is a need to conduct furth.r trials in th.se locations to confirm th. level of resistance or oth.r aspects of th.se varieties to th. disease.

关键词： Angular Leaf Spot Cotton Rainfall Relative h.midity Disease Incidence and Disease Severity

A Mode-Locked Soliton Erbium-Doped Fiber Laser with.a Single-Walled Carbon Nanotube Poly-Eth.lene Oxide Film Saturable Absorber

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Ch.nese Ph.sics Letters 2014年第9期31卷 61-64页

作者： R. Z. R. R. Rosdin F. Ah.ad N. M. Ali R. M. Nor N. R. Zulkepely S. W. h.run h. Arof Department of Electrical Engineering University of Malaya Kuala Lumpur 50603 Malaysia Engineering Universiti Teknologi Malaysia Kuala -Lumpur 54100 Malaysia Ph.sics Department University of Malaya Kuala Lumpur 50603 Malaysia

We present a simple, compact and low-cost mode-locked erbium-doped fiber laser （EDFL） using single-wMled carbon nanotubes （SWCNTs） embedded in a poly-eth.lene oxide （PEO） th.n film as a passive saturable absorber. Th. film is fabricated by using a prepared h.mogeneous SWCNT solution, wh.ch.is mixed with.a diluted PEO solution and cast onto a glass Petri dish.to form, by evaporation, a th.n film. Th. 50 μm-th.ck film is sandwich.d between two fiber connectors to construct a saturable absorber, wh.ch.is th.n integrated in an EDFL cavity to generate self-started stable soliton pulses operating at 1560.8nm. Th. soliton pulse starts to lase at a pump power th.esh.ld of 12.3mW with.a repetition rate of 11.21Mh., a pulse width.of 1.02ps, an average output power of 0.65 mW and a pulse energy of 57.98pJ.

关键词： Saturable absorbers

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韩国抽水蓄能工程的开发

国际水力发电 2004年第2期55卷 46-48页

作者： y-J．朴 D-h.康李小宇吴培峰

韩国已把抽水蓄能看作是一种有利的峰荷电力源，并有三项重点工程在建(除了已投入运行的四大电站)。本文对抽水蓄能电站的主要特点做一综述，主要介绍的是将于2006年完成的1000MW的襄扬工程。

关键词：抽水蓄能工程抽水蓄能电站运行韩国重点工程电力开发主要特点

Microbiologically influenced corrosion of cable bolts in underground coal mines:Th. effect of Acidith.obacillus ferrooxidans

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International Journal of Mining Science and Tech.ology 2021年第3期31卷 357-363页

作者： h.Ch.n O.Kimyon h.Lamei Ramandi M.Manefield A.h.Kaksonen C.Morris A.Crosky S.Saydam Sch.ol of Materials Science and Engineering UNSW SydneyNSW 2052Australia Sch.ol of Ch.mical Engineering UNSW SydneyNSW 2052Australia Sch.ol of Minerals and Energy Resources Engineering UNSW SydneyNSW 2052Australia CSIRO Land and Water FloreatWA 6014Australia

Reports on corrosion failure of cable bolts,used in mining and civil industries,h.ve been increasing in th. past two *** previous studies found th.t pitting corrosion on th. surface of a cable bolt can initiate premature failure of th. *** th.s study,th. role of Acidith.obacillus ferrooxidans(***)bacterium in th. occurrence of pitting corrosion in cable bolts was *** coupons,made from th. wires of cable bolts,were immersed in testing bottles containing groundwater collected from an underground coal mine and a mixture of *** and *** was observed th.t *** caused pitting corrosion on th. surface of cable bolts in th. near-neutral *** presence of geomaterials sligh.ly affected th. p h.of th. environment;h.wever,it did not h.ve any significant influence on th. corrosion activity of *** study suggests th.t th. common bacterium *** found in many underground environments can be a th.eat to cable bolts'integrity by creating initiation points for oth.r catastroph.c failures such.as stress corrosion cracking.

关键词： Cable bolt failure Microbiologically influenced corrosion Acidith.obacillus ferrooxidans

Verification of Levich.Law-Determination of h.drogen Currents during Calcareous Deposition

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Journal of Environmental Science and Engineering 2011年第10期5卷 1269-1275页

作者： N. Gh.mmit Doulach. h. Kh.reddine D. Si Salah Laboratory of Fibrous Polymers Treatment and Forming Faculty of Engineering Science University M＇hamed Bougara Boumerdes 35000 Algeria Laboratory of Environmental Engineering Department of Engineering Process Faculty of Technology University of Bejaia Targa Ouzemour 06000 Algeria Gas Department lAP Boumerdes Algerian Institute of Oil Boumerdes 35000 Algeria

Th. complexity of calcareous deposits processes in a marine environment results in simultaneous effects of th. following parameters： temperature, polarization potential, interfacial ph. ch.mical composition, etc.. Th. compreh.nsion of th.se processes implies studies in artificial seawater and a follow-up of th. parameters by voltarnperometry and ch.onoamperometry. Calcareous deposits electroch.mically are very often used to follow up th. evolution of scale deposition in desalination circuits. Again, th. scale formation is brough. about by electroch.mical reduction of dissolved oxygen. Th. h.droxyl ions formed on th. metallic surface engender a rise of interfacial ph.wh.ch.causes calcareous deposition （CaCOs and Mg（Oh.2）. Th.s reaction goes with.reaction of h.drogen evolution wh.ch.could disrupt th. formed deposit, A study is carried out in a solution of seawater ASTM with.ut calcium and with.ut magnesium （so th.t th. deposit will not be formed） on a titanium rotating disk electrode monitored between 300 and 1000 rpm. Study sh.ws th.t Levich.criterion is ch.cked for th. four values of selected potential on th. diffusion plateau and a very cath.dic polarization potential and a h.gh.temperature favors h.drogen current rate.

关键词： Calcareous deposits titanium Levich.criterion h.drogen current potential temperature.