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Tilted.global s.lar irrad.ance in Bahrain:an experimental s.ud.

Clean Energy 2024年第2期8卷 27-34页

作者： N.Vas.likos.C.Georgantopoulou H.Alajaimi s.H.Almajed.M.Ahmed.d.Mathioulakis s.hool of Mechanical Engineering Bahrain PolytechnicIsa TownPO Box 33349Kingdom of Bahrain s.hool of Mechanical Engineering National Technical University of AthensHeroon Polytechniou 7 StZografos 15773AthensGreece

In the pres.nt work,tilted.global s.lar irrad.ance d.ta are pres.nted.and.analys.d.meas.red.for a period.of 1 year on the campus.of Bahrain Polytechnic,Kingd.m of Bahrain,from both a fixed.photovoltaic panel and.a moving one via a two-axis.s.lar *** fixed.panel faces.s.uth with an angle of 26°with res.ect to the horizontal,coincid.ng with the local geographical *** s.cond.panel is.moved.by two motors.controlled.by a global pos.tioning s.s.em and.s.itable s.ftware s. that the s.n’s.rays.are perpend.cular to the panel s.rface.A pyranometer is.ins.alled.on each panel,record.ng the tilted.global s.lar irrad.ance,s.ored.by us.ng a d.ta *** analys.s.of the d.ta obtained.s.ows.a 33%s.lar energy gain on an annual bas.s.for the moving panel(2780 vers.s.2088 kWh/m^(2) on the fixed.panel).More importantly,in June,when the energy d.mand.in Bahrain is.elevated.d.e to the increas.d.res.d.ntial cooling load.,the s.lar energy received.by the moving panel is.54.7%higher compared.with that of the fixed.*** a percentage bas.s.the increas. in s.lar energy from the moving panel is.profound.in the early morning and.late evening ***,the red.ction in the s.lar energy received.by the fixed.panel from May to June d.es.not appear in the moving panel becaus. of the ad.us.able orientation of the *** the year,the mean d.ily s.lar power varies.between 0.37 and.0.56 kW/m^(2) for the fixed.panel,and.0.45 and.0.70 kW/m^(2) for the moving *** winter,s.lar energy fluctuations.are elevated.d.e to erratic weather cond.tions.that pres.nt a peak s.and.rd.d.viation of 28%of the corres.ond.ng *** d.ta pres.nted.are us.ful for potential s.lar inves.ments.in Gulf countries.

关键词： tilted.s.lar irrad.ance renewable energy s.lar tracking photovoltaic Gulf Cooperation Council Countries

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Benefits.of d.electric Oil Regeneration s.s.ems.in Power Trans.is.ion Networks. A Cas. s.ud.

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Journal of Power and.Energy Engineering 2024年第4期12卷 20-29页

作者： Emmanouil d. Fyllad.takis.s.vvas.Katemliad.s.Ioanna Pantelaki d.partment of Electric & Electronic Engineering University of West Attica Aegaleo Greece s.pply Chain d.partment Independent Power Transmission Operator Athens Greece d.partment of Trans.is.ion s.s.em Maintenance Chemistry Laboratory Independent Power Transmission Operator Athens Greece

The criticality of trans.ormers.and.reactors.in the power trans.is.ion network and.the paramount importance of ens.ring their reliability through maintenance of the ins.lating oil is.known. This.paper pres.nts.a comprehens.ve examination of the efficacy and.economic viability of a d.electric oil regeneration s.s.em, as.implemented.by the Trans.is.ion s.s.em Maintenance d.partment (Ts.d. of the Ind.pend.nt Power Trans.is.ion Operator (IPTO), Greece’s.s.le trans.is.ion operator. Through a d.tailed.chemical analys.s.and.performance evaluation, we as.es. the impact of the regeneration s.s.em on treated.ins.lating oil quality over multiple cycles. The s.ud. reveals.that the electrical properties.of the ins.lating oil are fully res.ored.after regeneration, negating the need.to fully replace it, while the inves.ment becomes.cos.-neutral within weeks.from the commis.ioning of the regeneration s.s.em. This.economic analys.s. coupled.with the s.s.em’s.environmental benefits.of red.cing was.e oil generation, pos.tions.the d.electric oil regeneration s.s.em as.a compelling s.lution for the maintenance of power trans.is.ion as.ets.

关键词： Ins.lating Oil Regeneration Trans.ormer Maintenance Economic Analys.s Preventive Maintenance Cas. s.ud.

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Polio erad.cation s.rveillance in s.i Lanka,2019-2023

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As.an Pacific Journal of Tropical Med.cine 2024年第6期17卷 268-272页

作者： M.A.Y.Fernand. N.s.Mad.ras.nghe C.Rangana N.Weeras.nghe d.C.U.d.Weligamage J.I.Abeynayake d.partment of Med.cal Microbiology and.Immunology Faculty of MedicineUniversity of ColomboSri Lanka d.partment of Virology Medical Research InstituteColombo 08Sri Lanka Med.cal Res.arch Ins.itute Colombo 08Sri Lanka

Objective:To evaluate the polio laboratory s.rveillance carried.out from January,2019 to May,2023 by the Polio Regional Reference Laboratory,s.i ***:This.retros.ective s.ud. analyzed.all s.ool s.mples.received.und.r the acute flaccid.paralys.s.AFP)and.immunod.ficient vaccine-d.rived.poliovirus.Vd.V)s.rveillance at Polio Regional Reference Laboratory,s.i Lanka from January,2019 to May,*** res.lts.of the tes.ing method.logies.were extracted.from the laboratory d.ta s.s.em,i.e.,poliovirus.virus.is.lation,intra-typic d.fferentiation/Vd.V real time revers. trans.riptas. polymeras. chain reaction(ITd.Vd.V rRTPCR)and.s.quencing,along with the d.ta on timing of reporting res.lts.s.ool ad.quacy and.*** was.analyzed.us.ng d.s.riptive ***:A total of 2141 s.ool s.mples.from 1644 cas.s.were received.for AFP s.rveillance from s.i Lanka(93.61%),Mald.ves.1.52%),and.immunod.ficient Vd.V(4.86%)*** poliovirus.s.19/1644,1.15%)and.non-polio enterovirus.s.73/1644,4.44%)were is.lated.while s.bin-like 3 virus.was.d.tected.in majority(12/19,63.15%)among the poliovirus.*** poliovirus.s.or circulating Vd.Vs.were not d.tected.among the *** all years.of the s.ud.,the non-polio AFP d.tection rate was.1/100000 in child.en aged.les. than 15 years.whereas.s.ool ad.quacy rate was.80%.All res.lts.were reported.within 14 d.ys.of receipt,ens.ring timely reporting as.per global ***:The Polio Regional Reference Laboratory,s.i Lanka plays.a vital role in maintaining the polio-free s.atus.in the country through its.robus. laboratory s.rveillance,while ad.ering to the s.rveillance ***-d.tection of wild.poliovirus.s.and.circulating Vd.V d.ring the s.ud. period.reinforces.the polio-free s.atus.in the country.

关键词： Poliovirus Polio laboratory s.rveillance Regional reference laboratory Polio erad.cation

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Rad.ois.tope prod.ction us.ng las.rs.From bas.c s.ience to applications

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Matter and.Rad.ation at Extremes 2024年第3期9卷 31-44页

作者： M.R.d.Rod.igues.A.Bonas.ra M.s.is.iò J.A.Pérez-Hernánd.z M.Ehret F.Filippi P.L.And.eoli M.Huault H.Larreur d.s.ngappuli d.Molloy d.Raffes.in M.Alonzo G.G.Rapis.rd. d.Lattuad. G.L.Guard. C.Verona Fe.Cons.li G.Petringa A.McNamee M.La Cognata s.Palmerini T.Carriere M.Cipriani G.d. Giorgio G.Cris.ofari R.d. Angelis.G.A.P.Cirrone d.Margarone L.Giuffrid. d.Batani P.Nicolai K.Batani R.Lera L.Volpe d.Giulietti s.Agarwal M.Krupka s.s.ngh Fa.Cons.li Cyclotron Ins.itute Texas A&M UniversityCollege StationTexas 77840USA Laboratori Nazionali d.l s.d Istituto Nazionale di Fisica Nucleare(LNS-INFN)CataniaItaly ENEA Fusion and Technologies for Nuclear Safety and Security Department-CFrascatiItaly Centro d. Lás.res.Puls.d.s.clpu) VillamayorSpain Univers.d.d.d. s.lamanca SalamancaSpain Centre Las.rs.Intens.s.et Applications.CELIA) Universitéde BordeauxCNRSCEATalenceFrance HB11 Energy Hold.ngs.Pty FreshwaterNew South WalesAustralia s.hool of Mathematics.and.Phys.cs Queen’s University BelfastBelfastUnited Kingdom d.partimento d. Fis.ca e As.ronomia“E.Majorana ”Università di CataniaCataniaItaly Facoltàd. Ingegneria e Architettura Universitàdegli Studi di Enna“Kore”EnnaItaly d.partimento d. Ingegneria Ind.s.riale Universitàdi Roma“Tor Vergata”RomaItaly d.partimento d. Fis.ca e Geologia Universitàdegli Studi di PerugiaPerugiaItaly Is.ituto Nazionale d. Fis.ca Nucleare Sezione di PerugiaPerugiaItaly ELI Beamlines.Facility the Extreme Light Infrastructure ERICDolni BrezanyCzech Republic ETs.A Universidad Politécnica de MadridMadridSpain d.partimento Fis.ca “E.Fermi”Universitàdi Pisa and INFNPisaItaly FZU–Ins.itute of Phys.cs.of Czech Acad.my of s.iences PragueCzech Republic Ins.itute of Plas.a Phys.cs.of Czech Acad.my of s.iences PragueCzech Republic

The d.s.overy of chirped.puls. amplification has.led.to great improvements.in las.r technology,enabling energetic las.r beams.to be compres.ed.to puls. d.rations.of tens.of femtos.cond. and.focus.d.to a few *** with energies.of tens.of MeV can be accelerated.us.ng,for ins.ance,target normal s.eath acceleration and.focus.d.on s.cond.ry *** s.ch cond.tions.nuclear reactions.can occur,with the prod.ction of rad.ois.topes.s.itable for med.cal *** us. of high-repetition las.rs.to prod.ce s.ch is.topes.is.competitive with conventional method. mos.ly bas.d.on *** this.paper,we s.ud. the prod.ction of^(67)Cu,^(63)Zn,^(18)F,and.(11)C,which are currently us.d.in pos.tron emis.ion tomography and.other *** the s.me time,we s.ud. the reactions.(10)B(p,α)^(7)Be and.(70)Zn(p,4n)^(67)Ga to put further cons.raints.on the proton d.s.ributions.at d.fferent angles.as.well as.the reaction^(11)B(p,α)^(8)Be relevant for energy *** experiment was.performed.at the 1 PW las.r facility at VegaⅢin s.lamanca,*** d.s.ributions.of rad.ois.topes.in the forward.with res.ect to the las.r d.rection)and.backward.d.rections.were meas.red.us.ng a high purity germanium *** res.lts.are in reas.nable agreement with numerical es.imates.obtained.following the approach of Kimura and.Bonas.ra[*** ***.,s.ct.A 637,164–170(2011)].

关键词： purity es.imates backward

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The CCd.ins.rument background.of the s.ILE s.I

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Earth and.Planetary Phys.cs 2024年第1期8卷 15-24页

作者： M.W.J.Hubbard.O.Hetherington d.J.Hall T.W.Buggey s.Pars.ns.T.Arnold.A.Holland.C.Pagani s.s.mbay Centre for Electronic Imaging The Open UniversityMilton KeynesMK76AAUK X-ray and.Obs.rvational As.ronomy Group Department of Physics&AstronomyUniversity of LeicesterLE17RHUK

The Es. and.CAs.s.ILE mis.ion orbit is.highly elliptical and.will pas. through multiple rad.ation *** s.ft X-ray Imager(s.I)ins.rument aboard.has.a rad.ation s.utter d.or d.s.gned.to clos. when the s.rround.ng rad.ation flux is.*** s.utter d.or will clos. when pas.ing below an altitud. thres.old.to protect agains. trapped.particles.in the Earth’s.Van Allen ***,two rad.ation environments.can be approximated.bas.d.on the s.utter d.or pos.tion:open and.*** ins.rument background.for the CCd.(Charge-Coupled.d.vices.that form the focal plane array of the s.I were evaluated.for the two *** to the correlation of the s.ace environment with the s.lar cycle,the s.lar minima and.maxima,the background.was.als. evaluated.at thes. two *** res.lts.d.mons.rated.that the highes. ins.rument background.will occur d.ring s.lar minima d.e to the main contributing s.urce being Galactic Cos.ic Rays.GCRs..It was.als. found.that the open background.was.highes. for s.lar minima and.that the clos.d.background.was.highes. d.ring s.lar *** is.d.e to the rad.ation s.utter d.or acting as.a s.attering centre and.the changes.in the energy flux d.s.ribution of the GCRs.between the two s.lar extremes.

关键词： ins.rument background X-ray as.ronomy s.ace rad.ation

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Enhanced.as.halt d.namic mod.lus.pred.ction: A d.tailed.analys.s.of artificial hummingbird.algorithm-optimis.d.boos.ed.trees

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Journal of Road.Engineering 2024年第2期4卷 224-233页

作者： Ikenna d.Uwanuakwa Ilham Yahya Amir Lyce Nd.lo Umba d.partment of Civil Engineering Near East UniversityMersin 10Turkey Faculty of s.iences University of LubumbashiLubumbashiThe Democratic Republic of Congo

This.s.ud. introd.ces.and.evaluates.a novel artificial hummingbird.algorithm-optimis.d.boos.ed.tree(AHAboos.ed.mod.l for pred.cting the d.namic mod.lus.E*)of hot mix as.halt *** a s.bs.antial d.tas.t from NCHRP Report-547,the mod.l was.trained.and.rigorous.y *** metrics.s.ecifically RMs.,MAE,and.R2,were employed.to as.es. the mod.l's.pred.ctive accuracy,robus.nes.,and.*** benchmarked.agains. well-es.ablis.ed.mod.ls.like s.pport vector machines.s.M)and.gaus.ian proces. regres.ion(GPR),the AHA-boos.ed.mod.l d.mons.rated.enhanced.*** achieved.R2 values.of 0.997 in training and.0.974 in tes.ing,us.ng the trad.tional Witczak NCHRP 1-40d.mod.l *** features.s.ch as.tes. temperature,frequency,and.as.halt content led.to a 1.23%increas. in the tes. R2,s.gnifying an improvement in the mod.l's.*** s.ud. als. explored.feature importance and.s.ns.tivity through s.AP and.permutation importance plots.highlighting bind.r complex mod.lus.G*|as.a key *** the AHA-boos.ed.mod.l s.ows.promis.,a s.ight d.creas. in R2 from training to tes.ing ind.cates.a need.for further ***,this.s.ud. confirms.the AHA-boos.ed.mod.l as.a highly accurate and.robus. tool for pred.cting the d.namic mod.lus.of hot mix as.halt concrete,making it a valuable as.et for pavement engineering.

关键词： As.halt d.namic mod.lus Pred.ction Artificial hummingbird.algorithm Boos.ed.tree

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Effect of proton irrad.ation on the optical properties.of thermal control coating bas.d.on polys.yrene with s.lica filler

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Propuls.on and.Power Res.arch 2024年第1期13卷 1-11页

作者： N.I.Cherkas.ina V.I.Pavlenko M.M.Mikhailov A.N.Lapin s.A.Yuriev R.V.s.d.lnikov d.s.Romanyuk Belgorod.s.ate Technological Univers.ty named.after V.G.s.oukhov Kostyukov Str.46Belgorod 308012Russia Toms. s.ate Univers.ty of Control s.s.ems.and.Rad.oelectronics 40Prospect LeninaTomsk 634050Russia

This.paper pres.nts.the res.lts.of s.ud.ing the s.rface properties.changes.of a ther-moregulating coating bas.d.on polys.yrene and.s.licaﬁller after proton irrad.ation with an en-ergy of 50 keV at afluence of 3�1015 cm�*** proton irrad.ation,the values.of the contact angle of wetting with water increas. by 3.5%and.14.9%for polys.yrene and.the coating,*** free s.rface energy(energy of the s.rface layer)of polys.yrene and.the coat-ings.before and.after proton irrad.ation was.calculated.us.ng the Owens.Wend.-Rabel-Kaelble *** was.a s.gniﬁcant increas. in the polarity of the polys.yrene s.rface(gp increas.d.by a factor of 2.2)after proton *** the coating,an increas. in gp by a factor of 3.89 was.obs.rved.after proton *** changes.in the coating were pres.nted.by IR Fourier s.ectros.opy.A s.ight d.creas. in the abs.rption intens.ty of all characteris.ic band. compared.to the unirrad.ated.s.mple was.*** was.found.that the irrad.ation of the coating with protons.led.to the formation of macromolecules.with hyd.oxyl,carbonyl,and.carboxyl bond.,as.well as.the formation of d.meric and.oligomeric s.loxane *** was.als. found.that after irrad.ation of a pure polys.yrene s.mple with protons.the value of the s.lar abs.rption as.increas.d.by only 4.2%;whereas.for the coating with s.licaﬁller,the value of as.increas.d.by 28.6%.

关键词： Thermal control coating Proton irrad.ation Hyd.ophobicity Free s.rface energy Rad.ation cros.linking

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Vaginal Birth after Ces.rean after Zavanelli Maneuver: A Woman’s.Right to Choos.

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Open Journal of Obs.etrics.and.Gynecology 2024年第7期14卷 1091-1095页

作者： Nicole Jenkins.Gregory Vurture Jonathan d. Baum d.partment of Obs.etrics.and.Gynecology Jersey Shore University Medical Center Neptune NJ USA

Introd.ction: Vaginal birth after ces.rean (VBAC) plays.an es.ential role in lowering ces.rean rates. d.s.ite end.rs.ment, trial of labor after ces.rean (TOLAC) attempt rates.remain low, in part d.e to fear of laws.its. Zavanelli maneuver is.a las. res.rt proced.re in the management of s.ould.r d.s.ocia. We d.s.us. a cas. of a woman d.termined.to have a vaginal birth after her prior birth was.complicated.by s.ould.r d.s.ocia requiring a Zavanelli maneuver. Her phys.cians.were reluctant to allow her a TOLAC given her prior obs.etric his.ory. Cas.: A 34-year-old.para 1 with prior ces.rean d.livery d.e to s.ould.r d.s.ocia that required.Zavanelli maneuver pres.nts.d.termined.to purs.e VBAC in her current pregnancy. s.e cons.d.red.her d.livery route options.and.ad.res.ed.her mod.fiable ris. factors. s.e cons.lted.with multiple perinatologis.s.who agreed.that a TOLAC was.reas.nable, however s.e had.to travel more than 70 miles.(from Penns.lvania to New Jers.y) to find.an obs.etrical practice and.hos.ital willing to cons.d.r VBAC. s.e trans.erred.care and.the remaind.r of her prenatal cours. was.uncomplicated. s.e went into labor at 41 weeks.and.had.a s.cces.ful VBAC without complication. In a thank you letter to her obs.etrician, s.e d.s.ribed.her birth experience as.euphoric. Conclus.on: This.cas. illus.rates.how a woman’s.choice of d.livery route may be impacted.by fear of litigation. Local provid.rs.focus.d.on her prior d.livery ins.ead.of her overall improved.ris. profile. d.livery route d.cis.ons.s.ould.be bas.d.on a thorough evaluation of all ris. factors.and.ind.vid.alized.to meet the reprod.ctive goals.of each woman. .

关键词： Vaginal Birth after Ces.rean Zavanelli Autonomy Cas. Report

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Performance of Chemical Vapor d.pos.ted.Boron-d.ped.AlN Thin Film as.Thermal Interface Materials.for 3-W LEd. Thermal and.Optical Analys.s

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Acta Metallurgica s.nica(Englis. Letters. 2018年第1期31卷 97-104页

作者： s. s.anmugan d. Mutharas. Nano Optoelectronics.Res.arch Laboratory School of Physics Universiti Sains Malaysia (USM) 11800 Minden Pulau Pinang Malaysia

Boron-d.ped.aluminum nitrid. （B-AlN） thin films.were s.nthes.zed.on Al s.bs.rates.by us.ng chemical vapor d.pos.tion method.by changing the s.nthes.s.parameters.and.were us.d.as.thermal interface material for high power light emitting d.od. （LEd.. The B-AlN thin film-coated.Al s.bs.rate was.us.d.as.heat s.nk and.s.ud.ed.the performance of high power LEd.at various.d.iving currents. The record.d.trans.ent cooling curve was.evaluated.to s.ud. the ris. in junction temperature （Tj）, total thermal res.s.ance （gth_tot） and.the s.bs.rate thermal res.s.ance （Rth_s.b） of the given LEd. From the res.lts. the B-AlN thin film （prepared.at proces. 4） interfaced.LEd.s.owed.low Rth-tot and.Tj value for all d.iving currents.and.obs.rved.high d.fference in Rth_tot （△Rth_tot =2.2 K/W） at 700 mA when compared.with the Rth-tot of LEd.attached.on bare Al s.bs.rates.（LEd.Al）. The Tj of LEd.was.red.ced.cons.d.rably and.obs.rved.4.7 ℃ as.ATj for the film prepared.us.ng proces. 4 cond.tion when compared.with LEd.Al bound.ry cond.tion at 700 mA. The optical performance of LEd.was.als. tes.ed.for all bound.ry cond.tions.and.s.owed.improved.lux values.for the given LEd.at 700 mA where B-AlN thin film was.s.nthes.zed.us.ng optimized.flow of Al, B and.N s.urces.with minimized.B and.N content. The other optical parameters.s.ch as.color correlated.temperature and.color rend.ring ind.x were als. meas.red.and.obs.rved.low d.fference for all bound.ry cond.tions. The obs.rved.res.lts.are s.gges.ed.to us. B-AlN thin film as.efficient s.lid.thin film thermal interface materials.in high power LEd.

关键词： Light emitting d.od. (LEd. B-AIN thin film Chemical vapor d.pos.tion (CVd. Thermal trans.ent analys.s Junction temperature Optical performance

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d.es.community-bas.d.health ins.rance affect lifes.yle and.timing of treatment s.eking behavior?Evid.nce from Ethiopia

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Global Health Journal 2024年第2期8卷 83-90页

作者： Zecharias.Fetene Anteneh Anagaw d.Mebratie Zemzem s.igute Getnet Alemu Arjun s.Bed. Center for Health Economics University of YorkYorkUnited Kingdom s.hool of Public Health College of Health SciencesAddis Ababa UniversityAddis AbabaEthiopia International Ins.itute of s.cial s.ud.es Erasmus University Rotterdamthe Haguethe Netherlands Ins.itute of d.velopment and.Policy Res.arch Addis Ababa UniversityAddis AbabaEthiopia

Objectives.This.paper aims.to inves.igate the effects.of enrollment in the Ethiopian community-bas.d.health ins.rance(CBHI)s.heme on hous.hold.preventive care activities.and.the timing of treatment-s.eking behavior for illnes. *** is.growing concern about the financial s.s.ainability of CBHI s.hemes.in d.veloping ***,few empirical s.ud.es.have id.ntified.potential contributors.includ.ng ex-ante and.ex-pos. moral *** We implement a hous.hold.fixed.effect panel d.ta regres.ion mod.l,d.awing on three round. of hous.hold.s.rvey d.ta collected.face to face in d.s.ricts.where CBHI s.heme is.operational and.in d.s.ricts.where it is.not operational in *** The find.ngs.s.ow that enrolment in CBHI d.es.not s.gnificantly influence hous.hold.behaviour regard.ng preventive care activities.s.ch as.water treatment before d.inking and.hand.as.ing before ***,CBHI s.gnificantly increas.s.d.lay in treatment-s.eking behaviour for d.s.as.s.***,on average,we es.imate about 4-6 h d.lay for malaria s.mptoms.a little above 4 h for tetanus.and.10-11 h for tuberculos.s.among the ins.red.*** While there is.evid.nce that CBHI improve the utilization of outpatient or primary care s.rvices.our s.ud. s.gges.s.that ins.red.members.may wait longer before vis.ting health *** d.lay could.be partly d.e to moral hazard.problems.as.ins.red.hous.hold.,particularly thos. from rural areas.may cons.d.r the opportunity cos.s.as.ociated.with vis.ting health facilities.for minor ***,it is.es.ential to id.ntify the primary caus.s.of d.lays.in s.eking med.cal s.rvices.and.implement appropriate interventions.to encourage ins.red.ind.vid.als.to s.ek early med.cal attention.

关键词： Community-bas.d.health ins.rance Financial s.s.ainability Preventive care Treatment-s.eking behavior Hous.hold.fixed.effect Ethiopia

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建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

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