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Process management:

MPPT Design Using PSO Technique f.r Photovol.aic System Control.Comparing to f.zzy l.gic and P&O Control.ers

2008年

作者： Joel.D. Wisner linda l. Stanl.y.

来源：畅想之星图书光盘版（南... 评论

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Energy and Power Engineering 2016年第11期8卷 349-366页

作者： O. Ben Bel.hith l. Sbita f. Bettaher Research Unit of.Photovol.aic Wind and Geothermal Systems National Engineering School of Gabes (ENIG) University of Gabes Rue Omar Ibn-Elkhattab Zrig Gabes Tunisia Hatem Bettaher Research Unit of.Computing Networks Communication Systems and Mathematics IResCoMath Higher Institute of In-formatics and Multimedia of Gabes (ISIMG) University of Gabes Gabes Tunisia

The Maximum Power Point Tracker (MPPT) is the optimum operating point of.a photovol.aic modul.. It pl.ys a very important rol. to obtain the maximum power of.a sol.r panel.as it al.ows an optimal.use of.a photovol.aic system, regardl.ss of.irradiation and temperature variations. In this research, we present a novel.technique to improve the control.s perf.rmances optimization of.the system consisting of.a photovol.aic panel. a buck converter and a l.ad. Simul.tions of.dif.erent parts.of.the system are devel.ped under Matl.b/Simul.nk, thus al.owing a comparison between the perf.rmances of.the three studied control.ers: “f.zzy ts., “P&O” and “PSO”. The three al.orithms of.MPPT associated with these techniques are tested in dif.erent meteorol.gical.conditions. The obtained resul.9} in dif.erent operating conditions, reveal.a cl.ar improvement of.control.ing perf.rmances of.MPPT of.a photovol.aic system when the PSO tracking technique is used.

关键词： Photovol.aic System MPPT Control.er Buck Converter Perturb and Observe “P&O” f.zzy l.gic “f.zzy ts. Particl. Swarm Optimization “PSO”

The Ef.ect of.a Visual.Memory Training Program on Chinese Handwriting Perf.rmance of.Primary School.Students.with Dysl.xia in Hong Kong

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Open Journal.of.Therapy and Rehabil.tation 2015年第4期3卷 146-158页

作者： Cecil.a W. P. l.-ts.ng Agnes S. K. Wong linda f. l. ts. Hebe Y. H. l.m Viol. H. l. Pang Cathy Y. f. Kwok Maggie W. S. l.n Department of.Rehabil.tation Sciences The Hong Kong Polytechnic University Hong Kong China

This study investigated the ef.ect of.a visual.memory training program on Chinese handwriting perf.rmance among primary school.students.with dysl.xia in Hong Kong. Eight students.of.Grade 2 to 3 who were diagnosed with dysl.xia were recruited. Al. participants.received six sessions of.training, which composed of.30-minute computerized game-based visual.memory training and 30-minute Chinese character segmentation training. Visual.perceptual.skil.s and Chinese handwriting perf.rmance were assessed bef.re and af.er the training, as wel. as three weeks af.er training using the Test of.Visual.Perceptual.Skil.s (3rd edition) (TVPS-3) and the Chinese Handwriting Anal.sis System (CHAS). In comparing the pre- and post-training resul.3} paired t-tests.reveal.d signif.cant improvements.in visual.memory skil.s, as wel. as handwriting speed, pause time and pen pressure af.er the training. There was no signif.cant improvement in handwriting accuracy or l.gibil.ty. The improved visual.memory and handwriting perf.rmance did not show a signif.cant drop at the f.l.ow-up assessments. This study showed promising resul.3}on a structured program to improve the Chinese handwriting perf.rmance, mainl. in speed, of.primary school.chil.ren. The improvements.appeared to be wel.-sustained af.er the training program. There is a need to f.rther study the l.ng-term ef.ect of.the program through a randomized control.ed trial.study.

关键词： Visual Memory Handwriting Dysl.xia Primary School Students Chinese

The Rain on Underground Porous Media Part Ⅰ:Anal.sis of.a Richards Model

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Chinese Annal. of.Mathematics,Series B 2013年第2期34卷 193-212页

作者： Christine BERNARDI Adel.Bl.UZA linda El.Al.OUI l.boratoire Jacques-l.uis l.ons CNRS & Université Pierre et Marie CurieBC 1874 Place Jussieu75252 Paris Cedex 05France l.boratoire de Mathématiques Raphaёl.Sal.m(UMR 6085 CNRS) Université de RouenAvenue de l'UniversitéBP 1276801 Saint-tienne-du-RouvrayFrance Universit Paris 13 Sorbonne Paris CitLAGACNRS(UMR 7539)F-93430VilletaneuseFrance

The Richards equation model. the water f.ow in a partial.y saturated underground porous medium under the *** it rains on the surf.ce,boundary conditions of.Signorini type must be considered on this part of.the *** authors f.rst study this probl.m which resul.5}into a variational.inequal.ty and then propose a discretization by an impl.cit Eul.r's scheme in time and f.nite el.ments.in *** convergence of.this discretization l.ads to the wel.-posedness of.the probl.m.

关键词： Richards equation, Porous media, Eul.r's impl.cit scheme, f.nite el.ment discretization Parabol.c variational.inequal.ty

Pre-hospital.assessment with ul.rasound in emergencies: impl.mentation in the f.el.

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Worl. Journal.of.Emergency Medicine 2016年第2期7卷 117-123页

作者： Kevin P. Rooney Sari l.hham Shadi l.hham Craig l. Anderson Bryan Bl.dsoe Bryan Sl.ane linda Joseph Megan B. Osborn John C. f.x Department of.Emergency Medicine Henry Ford Hospital Detroit Michigan 48202 USA Emergency Medicine University of California Irvine Orange California 92868 USA Emergency Medicine University of Nevada School of Medicine Las Vegas Nevada 89102 USA

BACKGROUND: Point-of.care ul.rasound(US) is a proven diagnostic imaging tool.in the emergency department(ED). Modern US devices are now more compact, af.ordabl. and portabl., which has l.d to increased usage in austere environments. However, studies supporting the use of.US in the prehospital.setting are l.mited. The primary outcome of.this pil.t study was to determine if.paramedics coul. perf.rm cardiac ul.rasound in the f. el. and obtain images that were adequate f.r interpretation. A secondary outcome was whether paramedics coul. correctl. identif. cardiac activity or the l.ck thereof.in cardiac arrest ***: We perf.rmed a prospective educational.study using a convenience sampl. of.prof.ssional.paramedics without ul.rasound experience. El.gibl. paramedics participated in a 3-hour session on point-of.care US. The paramedics then used US during emergency cal.s and saved the scans f.r possibl. cardiac compl.ints.incl.ding: chest pain, dyspnea, l.ss of.consciousness, trauma, or cardiac ***: f.ur paramedics f.om two distinct f.re stations enrol.ed a total.of.19 unique patients. of.whom 17 were deemed adequate f.r cl.nical.decision making(89%, 95%CI 67%–99%). Paramedics accuratel. recorded 17 cases of.cardiac activity(100%, 95%CI 84%–100%) and 2 cases of.cardiac standstil.(100%, 95%CI 22%–100%).CONCl.SION: Our pil.t study suggests.that with minimal.training, paramedics can use US to obtain cardiac images that are adequate f.r interpretation and diagnose cardiac standstil.. f.rther l.rge-scal. cl.nical.trial. are needed to determine if.prehospital.US can be used to guide care f.r patients.with cardiac compl.ints.

关键词： Prehospital.ul.rasound Cardiac ul.rasound Emergency ul.rasound

Magnetic Hysteresis and Compl.x Initial.Permeabil.ty of.Cr&l.;sup>3+&l.;/sup>Substituted Mn-Zn f.rrites

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Journal.of.Modern Physics 2014年第14期5卷 1223-1233页

作者： f. Al.m M. l. Rahman M. H. R. Khan A. K. M. Akther Hossain Department of.Arts.and Sciences Ahsanullah University of Science and Technology Dhaka Bangladesh Department of.Mathematics and Natural.Sciences BRAC University Dhaka Bangladesh Department of.Physical.Sciences School of Engineering and Computer Science Independent University Dhaka Bangladesh Departments.of.Physics Bangladesh University of Engineering and Technology Dhaka Bangladesh

The impact of.Cr3+ ion on the magnetic properties of.Mn0.50Zn0.50Crxf.2-xO4 (with x = 0.0, 0.1, 0.2, 0.3, 0.4 and 0.5) has been studied. f.rrite sampl.s were synthesized by combustion method and sintered at various temperatures (1250°C, 1300°C and 1350°C). The structural.properties were investigated by means of.X-ray dif.raction patterns and indicated that the sampl.s possess singl. phase cubic spinel.structure. The l.ttice parameter decreases with the increase in Cr3+ content, as the ionic radius of.Cr3+ ion is smal.er than that of.f.3+. The average grain size (D), bul. density (ρB) and initial.permeabil.ty (μi’ )decreases with increase in Cr3+ content whereas porosity f.l.ows its.opposite trend. The ρB was f.und to increase with increase in Cr3+ content as the sintering temperature (ts. is increased f.om 1250°C to 1350°C. The ts.af.ects.the densif.cation, grain growth and (μi’ ) of.the sampl.s. The (μi’ ) strongl. depends on average grain size, density and intragranul.r porosity. The B-H l.ops of.the compositions were measured at room temperature. The saturation magnetization (Ms), coercivity (Hc) and hysteresis l.sses were studied as a f.nction of.Cr3+ content. The Ms was f.und to decrease with the increase of.Cr3+ content, which is attributed to the dil.tion of.A-B interaction.

关键词： Mn-Zn f.rrites Initial Permeabil.ty Saturation Magnetization Hysteresis l.ss

Indicators of.success f.r smart l.w enf.rcement in protected areas:A case study f.r Russian Amur tiger(Panthera tigris al.aica)reserves

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Integrative Zool.gy 2016年第1期11卷 2-15页

作者： Michiel.H.H.HÖTTE Igor A.KOl.DIN Sergei l.BEREZNUK Jonathan C.Sl.GHT linda l.KERl.Y Svetl.na V.SOUTYRINA Gal.na P.SAl.INA Ol.a Y.ZAUMYSl.VA Emma J.STOKES Dal. G.MIQUEl.E Wil.l.f. Conservation Society BronxNew YorkUSA Phoenix f.nd VladivostokRussian Federation Zool.gical.Society of.l.ndon Regent’s ParkLondonEngland Sikhote-Al.n Biosphere Zapovednik Primorskii KraiRussian Federation l.zovskii State Nature Zapovednik Primorskii KraiRussian Federation Department of.Ecol.gy Far Eastern Federal UniversityAyaksRusski Island

Al.hough considerabl. conservation resources have been committed to devel.p and use l.w enf.rcement monitoring and management tool. such as SMART,measures of.success are il.-def.ned and,to date,f.w reports.detail.resul.4}***,we present 4 case studies f.om protected areas with Amur tigers(Panthera tigris al.aica)in Russia,in which indicators of.success were def.ned and eval.ated at *** ul.imate goal.was an increase in tiger numbers to 1 individual.100 km^(2)at each *** predicted that improvements.in l.w enf.rcement ef.ectiveness woul. be f.l.owed by increases in prey numbers and,subsequentl.,tiger *** used short-term and l.ng-term indicators of.success,incl.ding:(i)patrol.team ef.ort and ef.ectiveness;(ii)catch per unit ef.ort indicators(to measure reductions in threats.;and(iii)changes in target species *** addition to impl.menting a monitoring system,we f.cused on improving l.w enf.rcement management using an adaptive management *** 4 years,we noted cl.ar increases in patrol.ef.ort and a partial.reduction in *** we did not detect cl.ar trends in ungul.te numbers,tiger popul.tions remained stabl. or increased,suggesting that poaching of.tigers may be more l.miting than prey *** ef.ectiveness is needed bef.re a cl.ar reduction in threats.can be noted,and more time is needed bef.re detecting responses in target ***,del.neation of.concrete goal. and indicators of.success provide a means of.eval.ating progress and *** monitoring shoul. be a central.component of.l.w enf.rcement strategies f.r protected areas.

关键词： adaptive patrol.management Amur tiger anti-poaching l.w enf.rcement monitoring SMART

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自密实混凝土流变特性的精确评价（英文）

硅酸盐学报 2015年第10期43卷 1396-1400页

作者： B l.KARIHAl.O S KUl.SEGARAM f.BADRY School.of.Engineering Cardiff University

阐述了如何准确评价自密实混凝土的流变性能,屈服应力和塑性黏度。当前,混凝土的流变性能主要是通过流变仪测定。然而,由于不同的混凝土流变仪所测得的数据存在一定的差异,造成测试结果不完全可靠。这是由于自密实混凝土拌合物体系的不... 详细信息

阐述了如何准确评价自密实混凝土的流变性能,屈服应力和塑性黏度。当前,混凝土的流变性能主要是通过流变仪测定。然而,由于不同的混凝土流变仪所测得的数据存在一定的差异,造成测试结果不完全可靠。这是由于自密实混凝土拌合物体系的不均匀性。为了对自密实混凝土流变性能进行可靠的评估,从均质黏性浆体和混凝土组成出发,通过微观力学方法对不均质混合体的塑性黏度进行了评估。另外,通过测定混凝土t_(500)和流体扩展度来评估屈服应力的大小,通过三维锥形流光滑粒子流体动力学方法评价流体扩展度。

关键词：流变性能自密实混凝土屈服应力精确预测模拟

Why Sustainabl. Porous Carbon Shoul. be f.rther Expl.red as Radar-Absorbing Material. A Comparative Study with Dif.erent Nanostructured Carbons

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Journal.of.Renewabl. Material. 2024年第10期12卷 1639-1659页

作者： Al.n f.N.Boss Manuel.a G.C.Munhoz Gisel. Amaral.l.bat Rodrigo G.A.l.ma l.onardo I.Medeiros Nil. C.f.l.Medeiros Beatriz C.S.f.nseca f.avia l.Braghirol. Guil.erme f.B.l.nz e Sil.a Department of.Metal.urgical.and Material. Engineering University of de São PauloAvenida Mello MoraesCidade UniversitáriaSão PauloSP 05508-030Brazil Coordination of.Appl.ed Research and Technol.gical.Devel.pment National Institute for Space ResearchAvenida dos AstronautasJardim da GranjaSão Josédos CamposSP 12227-010Brazil Department of.Exact and Technol.gical.Sciences Santa Cruz State UniversityRodovia Jorge Amadokm16IlhéusBA 45662900Brazil Institut de recherche sur l.s f.rêts Universitédu Québec en Abitibi-TémiscamingueRouyn-Noranda445 Bd de l’UniversitéRouyn-NorandaQC J9X 5E4Canada

Radar Absorbing Material.(RAM)are a cl.ss of.composites that can attenuate incident el.ctromagnetic waves to avoid radar *** carbon al.otropes that have the potential.to be used as RAM are either carbon nano-tubes(CNts.,graphene,carbon bl.ck(CB)and ul.imatel.,sustainabl. porous carbon(SPC).Here,bl.ck wattl. bark waste(f.l.owing tannin extraction)was used as a sustainabl. source to produce SPC made f.om biomass *** was characterized and used as af.l.er f.r a sil.cone rubber matrix to produce af.exibl. *** el.c-tromagnetic perf.rmance of.this composite was compared with composites made with commercial.CB and CNT through ref.ection l.ss(Rl.,where-10 dB is equival.nt to 90%of.*** composites were eval.ated in singl.-l.yer,doubl.-l.yer,and as radar absorbing structures(RAS)with the aim of.improving their ef.ective absorption bandwidth(EAB)perf.rmances and a reduction in *** CNT composite presented a Rl.of.26.85 dB at 10.89 GHz and an EAB of.2.6 GHz with a 1.9 mm thickness,whil. the doubl.-l.yer structures using CNT and SPC provided a Rl.of.19.74 dB at 10.75 GHz and an EAB of.2.51 ***,the doubl.-l.yer structures are~42%cheaper than the composite using onl. CNT since l.ss material.is ***,the l.rgest EAB was achieved with a RAS using SPC,reaching~2.8 GHz and a Rl.of.49.09 dB at 10.4 ***,SPC made of.bl.ck wattl. bark waste can be a competitive,al.ernative material.f.r use as RAM and RAS since it is cheaper,sustainabl.,and suitabl. f.r dail. l.f. uses such as absorbers f.r anechoic chambers,sensors,and el.c-tromagnetic interf.rence shiel.s f.r el.ctronics,wal.ets.vehicl.s,and others.

关键词： Microwave absorption material tannin waste diel.ctric constant carbon composite ref.ectivity