检索结果-南通市图书馆

Journa. of.Semiconductors 2024年第9期45卷 28-35页

作者： Leona.de N.Rodrigues Wesley f.Inoch Ma.cos L.f.Gomes Odilon D.D.Couto Jr. bráulio S.a.cha.jo Suka.no O.f.rreira Physics Depa.tment Federal University of ViçosaViçosa36570-900Minas GeraisBrazil Instituto de f.sica.Gleb Wa.a.hin Universidade Estadual de CampinasCampinas13083-859São PauloBrazil Na.iona. Institute of.Metrology Qua.ity a.d Technology(Inmetro) Materials Metrology Division(DIMAT)Xerém2525-020Rio de JaneiroBrazil

This work shows tha. despite a.la.tice misma.ch of.a.most 20%, CdMnTe/CdTe/CdMnTe heterostructures grown directly on Si(111) ha.e surprisingly good optica. emission properties. The investiga.ed structures were grown by molecula. bea. epita.y a.d cha.a.terized by sca.ning tra.smission electron microscopy, ma.ro-a.d micro-photoluminescence. Low tempera.ure ma.ro-photoluminescence experiments indica.e three emission ba.ds which depend on the CdTe la.er thickness a.d ha.e dif.erent conf.nement cha.a.teristics. Tempera.ure mea.urements revea. tha. the lower energy emission ba.d (a. 1.48 eV)is a.socia.ed to def.cts a.d bound exciton sta.es, while the ma.n emission a. 1.61 eV ha. a.wea. 2D cha.a.ter a.d the higher energy one a. 1.71 eV ha. a.well-def.ned (zero-dimensiona., 0D) 0D na.ure. Micro-photoluminescence mea.urements show the existence of.sha.p a.d strongly circula.ly pola.ized (up to 40%) emission lines which ca. be rela.ed to the presence of.Mn in the heterostructure. This result opens the possibility of.producing photon sources with the typica. spin control of.the diluted ma.netic semiconductors using the low-cost silicon technology.

关键词： CdMnTe/CdTe/CdMnTe heterostructure CdTe/CdMnTe qua.tum emitters qua.tum dot-like emission silicon(111)substra.e

Eva.ua.ing tra.sient beha.iour of.la.ge-sca.e photovolta.c systems during lightning events using enha.ced f.nite dif.erence time doma.n method with va.ia.le cell size a.proa.h

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

HIGH VOLTa.E 2024年第3期9卷 636-647页

作者： Hetita. Ibra.im Ma.sour, Dia.-Eldin a. Ha., Ya.g Ya.g, Ping Wa.g, Congling Da.wish, Moha.ed M. f. Lehtonen, Ma.ti Za.ha.0} a.r S. Univ Elect Sci & Technol China.UESTC Sch Mech & Elect Engn Chengdu Peoples R China Helwa. Univ Fac Engn Elect Power & Machines Engn Dept Cairo Egypt Ta.ta.Univ Fac Engn Elect Power & Machines Engn Dept Tanta Egypt Egypt Ja.a. Univ Sci & Technol Fac Engn Dept Elect Power Engn Alexandria Egypt Benha.Univ Fac Engn Shoubra Dept Elect Engn Cairo Egypt a.lto Univ Sch Elect Engn Dept Elect Engn & Automation Espoo Finland GMC Dept Med Srinagar Jammu And Kashm India

Photovolta.c (PV) a.ra.s a.e usua.ly insta.led in open a.ea.; hence, they a.e vulnera.le to lightning strikes tha. ca. result in cell degra.a.ion, complete da.a.e, service disruption, a.d increa.ed ma.ntena.ce costs. a. a.result, it is impera.ive to develop a. ef.ective a.d ef.icient lightning protection system by eva.ua.ing the tra.sient beha.iour of.PV a.ra.s during lightning events. The a.m is to eva.ua.e the tra.sient a.a.ysis of.la.ge-sca.e PV systems when subjected to lightning strikes using the f.nite dif.erence time doma.n (f.TD) technique. Tra.sient overvolta.es a.e ca.cula.ed a. va.ious points within the mounting system. To optimise the f.TD method's execution time a.d ma.e it more suita.le f.r less powerf.l ha.dwa.e, a.va.ia.le cell size a.proa.h is employed. Specif.ca.ly, la.ger cell dimensions a.e used in the ea.thing system a.d sma.ler cell dimensions a.e used in the mounting system. The f.TD method is utilised to ca.cula.e the tempora. va.ia.ion of.tra.sient overvolta.es f.r la.ge-sca.e PV systems under dif.erent scena.ios, including va.ia.ions in the striking point, soil resistivity, a.d the presence of.a.meta. f.a.e. Simula.ion results indica.e tha. the highest tra.sient overvolta.es occur a. the striking point, a.d these va.ues increa.e with the presence of.a.PV meta. f.a.e a. well a. with higher soil resistivity. f.rthermore, a.compa.ison is perf.rmed between the overvolta.e results obta.ned f.om the f.TD a.proa.h a.d the pa.tia. element equiva.ent circuit (PEEC) method a. the f.ur corner points of.the mounting systems to demonstra.e the superior a.cura.y of.the f.TD method. Besides, a.la.ora.ory experiment is conducted on a.sma.l-sca.e PV system to va.ida.e the simula.ion results. The ca.cula.ed overvolta.es obta.ned f.om the f.TD a.d PEEC methods a.e compa.ed with the mea.ured va.ues, yielding a.mea. a.solute error of.5% a.d 11% f.r the f.TD a.d PEEC methods, respectively, thereby conf.rming the a.cura.y of.the f.TD simula.ion model.

关键词： f.TD METHOD MODEL

Sha.e-cha.ging pa.ticles f.r loca.ly resolved pa.ticle geometry in DEM simula.ions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Pa.ticuology 2024年第6期89卷 185-190页

作者： Enric Illa.a.Klidi Qyteti Ma.k Scha.nowski Ma.imilia. brömmer Siegma. Wirtz Viktor Scherer Institute of.Energy Pla.t Technology Ruhr-University BochumBochumGermany

Ta.ing into a.count the complex sha.e of.pa.ticles in discrete element method (DEM) simula.ions of.la.ge-sca.e gra.ula. systems is computa.iona.ly dema.ding due to the time-consuming conta.t detection a.gorithms f.r polyhedra. pa.ticles. In this short communica.ion, a.novel a.proa.h tha. loca.ly resolves the pa.ticle sha.es where needed a.d uses a.simplif.ed representa.ion elsewhere, to a.celera.e simula.ions without compromising a.cura.y, is presented. f.r this purpose, a.method employing a.smooth tra.sition of.the pa.ticle sha.e representa.ion f.om a.a.ytica. spheres to sha.e-resolving polyhedra.is introduced in DEM. The f.a.ibility a.d correct implementa.ion of.this a.proa.h a.e demonstra.ed through simula.ions of.hopper discha.ge involving spherica. a.d dodeca.edra. pa.ticles f.om a.f.a. bottom silo or sha.0} kiln. The model ca.a.ilities, in terms of.a.cura.y a. well a. reduction in computa.iona. ef.ort, a.e qua.tif.ed f.r a.moving bed with continuous outf.ow.

关键词： Polyhedron Size cha.ge Sha.e cha.ge Loca.ly resolved DEM

Rising utiliza.ion of.sta.le isotopes in tree rings f.r clima.e cha.ge a.d f.rest ecology

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journa. of.f.restry Resea.ch 2024年第1期35卷 103-116页

作者： Ru Hua.g Chenxi Xu Jussi Grießinger Xia.yu f.ng Ha.f.ng Zhu a.him bräuning Na.iona. Institute of.Na.ura. Ha.a.ds Beijing 100085People’s Republic of China Key La.ora.ory of.Cenozoic Geology a.d Environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029People’s Republic of China Ca. Center f.r Excellence in Lif. a.d Pa.eoenvironment Beijing 100044People’s Republic of China Institute of.Geogra.hy Friedrich-Alexander-University of Erlangen-Nuremberg91058 ErlangenGermany Sta.e Key La.ora.ory of.Tibeta. Pla.ea. Ea.th System Environment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101People’s Republic of China University of.Chinese a.a.emy of.Sciences Beijing 100049People’s Republic of China

a.a.yses of.sta.le isotopes(C,O,H)in tree rings a.e increa.ingly importa.t cross-disciplina.y *** ra.id development in this f.eld documented in a. increa.ing number of.publica.ions requires a.comprehensive *** study includes a.bibliometric a.a.ysis-ba.ed review to better understa.d resea.ch trends in tree ring sta.le isotope ***,1475 publica.ions were selected f.om the Web of.Science Core Collection f.r *** f.ndings a.e tha.:(1)numbers of.a.nua. publica.ions a.d cita.ions increa.ed since *** 1974 to 1980,there were a.ound two releva.t publica.ions per ***,f.om 2020 to 2022,this rose sha.ply to 109 publica.ions per ***,a.era.e a.ticle cita.ions were less tha. f.ur per yea. bef.re 1990,but were a.ound f.ur per a.ticle per yea. a.0}er 2000;(2)the ma.or subjects using tree ring sta.le isotopes include f.restry,geosciences,a.d environmenta. sciences,contributing to 42.5%of.the tota. during 1974-2023;(3)the top three most productive institutions a.e the Chinese a.a.emy of.Sciences(423),the Swiss f.dera. Institute f.r f.rest,Snow a.d La.dsca.e Resea.ch(227),a.d the University of.a.izona.204).These a.hievements result f.om strong colla.ora.ions;(4)review pa.ers,f.r exa.ple,(Da.son et a..,a.nu Rev Ecol Syst 33:507-559,2002)a.d(McCa.roll a.d Loa.er,Qua. Sci Rev 23:771-801,2004),a.e a.ong the most cited,with more tha. 1000 cita.ions;(5)tree ring sta.le isotope studies ma.nly f.cus on clima.ology a.d ecology,with a.mospheric CO_(2) one of.the most popula. *** 2010,precipita.ion a.d drought ha.e received increa.ing *** on this a.a.ysis,the resea.ch sta.es,key f.ndings,deba.ed issues,limita.ions a.d direc-tions f.r f.ture resea.ch a.e *** study serves a. a. importa.t a.tempt to understa.d the progress on the use of.sta.le isotopes in tree rings,providing scientif.c guid-a.ce f.r young resea.chers in this f.eld.

关键词： Tree rings Sta.le isotopes Web of.Science Bibliometric

Prelimina.y a.plica.ion of.High-f.equency Ultra.ound in the Dif.erentia.ion of.Pemphigus a.d Bullous Pemphigoid: a. Observa.iona. Study

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Interna.iona. Journa. of.Derma.ology a.d Venereology 2024年第3期7卷 155-159页

作者： Liu Y.-a. Ca. R. Da.M.-H. Dong Z.-B. Wa.g f. Depa.tment of.Derma.ology Taizhou Central Hospital (Taizhou University Hospital) Zhejiang Taizhou 318000 China Depa.tment of.Derma.ology Children's Hospital of Soochow University Jiangsu Suzhou 215025 China Depa.tment of.Derma.ology Zhongda Hospital Southeast University Jiangsu Nanjing 210009 China

Objective: Ultra.onogra.hy is a.dia.nostic ima.ing technique used to visua.ize subcuta.eous body structures f.r identif.ca.ion of.possible pa.hologies. In this study, we a.med to explore the clinica. signif.ca.ce of.high-f.equency ultra.ound in dif.erentia.ing the loca.ion of.blisters between pemphigus a.d bullous pemphigoid. Methods: Eighteen pa.ients were recruited in Depa.tment of.Derma.ology, Zhongda.Hospita. f.om 2020 to 2021 a.d divided into a.pemphigus group (n = 8) a.d a.bullous pemphigoid group (n = 10) a.cording to the dia.nostic criteria.f.r ea.h. Ultra.onogra.hic ima.es were collected using a.50-MHz high-f.equency ultra.ound system. The indexes of.ultra.onic eva.ua.ion were the la.er (epidermis or dermis), size, sha.e, interna. echo, a.d bounda.y of.the blister. Ca.egorica. va.ia.les a.e expressed a. n (%), a.d dif.erences were compa.ed using f.sher's exa.t test. Results: The ultra.onogra.hic ima.es in the pemphigus group showed a. intra.piderma. semi-a.c or irregula. a.echoic or hypoechoic a.ea.. The inf.rior borders were situa.ed a.ove the cha.a.teristic thin linea. hyperechoic ba.ds of.the epidermis. a.linea. hypoechoic ba.d wa. present a. the dermoepiderma. junction in some ca.es. In the ultra.onogra.hic ima.es of.the bullous pemphigoid group, the linea. hyperechoic ba.ds of.the epidermis were continuous a.d inta.t. a. ova. f.uid a.echoic a.ea.(subepiderma. blister) wa. present immedia.ely below the ba.ds. The loca.ion of.the blisters in the ultra.onogra.hic ima.es wa. signif.ca.tly dif.erent between the 2 groups (P f.equency ultra.ound ca. be used a. a. a.xilia.y mea.s to dif.erentia.e the loca.ion of.blisters between pemphigus a.d bullous pemphigoid. © 2022 Hospita. f.r Skin Disea.es (Institute of.Derma.ology), Chinese a.a.emy of.Medica. Sciences, a.d Chinese Medica. a.socia.ion, published by Wolters Kluwer, Inc.

关键词： bullous pemphigoid high-f.equency ultra.ound pemphigus

Evidence f.r the Relia.ility a.d Va.idity of.the a.a.ic Version of.the Student Risk Screening Sca.e f.r Interna.izing a.d Externa.izing Beha.iors (SRSS-IE)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journa. of.Beha.iora. a.d bra.n Science 2024年第1期14卷 32-45页

作者： Suma.a. a. a.ruba.ie Keeta. D. f. a.ka.ta.i Depa.tment of.Specia. Educa.ion College of Education King Saud University Riyadh Kingdom of Saudi Arabia

School-ba.ed universa. screening f.r beha.iora./emotiona. risk is a.necessa.y f.rst step to providing services in a. educa.iona. setting f.r students with emotiona. a.d beha.iora. disorders (EBDs). Psychometric properties a.e critica. to ma.ing decisions a.out choosing a.screening instrument. The purpose of.the present study wa. to exa.ine the psychometric properties of.the student risk screening sca.e f.r interna.izing a.d externa.izing beha.iors (SRSS-IE). Pa.ticipa.ts included 3145 students a.d their tea.hers. Item-level a.a.yses of.the current sa.ple supported the retention of.a.l items. The interna. consistency of.the SRSS items ra.ged f.om 0.83 to 0.85. Convergent va.idity between the SRSS-IE a.d a.well-esta.lished screening tool, the strength a.d dif.iculties questionna.re (SDQ), wa. f.und f.r the tota. score (r = 0.70). a.ditiona.ly, the results of.this study demonstra.e strong socia. va.idity, suggesting the SRSS-IE to be a.usef.l a.d f.nctiona. screening tool. We conclude tha. the SRSS-IE is a.va.id a.d relia.le instrument f.r a.sessing the level of.emotiona. a.d beha.iora. dif.iculties a.ong elementa.y students.

关键词： The Student Risk Screening Sca.e f.r Interna.izing a.d Externa.izing Beha.iors (SRSS-IE) Strength a.d Dif.iculties Questionna.re (SDQ) Emotiona. a.d Beha.iora. Dif.iculties Screening Tools Systema.ic Screening

Two-Strea. a.proxima.ion to the Ra.ia.ive Tra.sf.r Equa.ion:a.New Improvement a.d Compa.a.ive a.cura.y with Existing Methods

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

a.va.ces in a.mospheric Sciences 2024年第2期41卷 278-292页

作者： f.Momo TEMGOUa.L.a.a.a.NGUIMDO DNJOMO Environmenta. Energy Technologies La.ora.ory(EETL) Faculty of SciencesUniversity of YaoundéPO Box 812 YaoundéCameroon Depa.tment of.Electrica. a.d Electronic Engineering Faculty of Engineering and TechnologyUniversity of BueaPO Box 63 BueaCameroon

Ma.hema.ica. modeling of.the intera.tion between sola. ra.ia.ion a.d the Ea.th's a.mosphere is f.rma.ized by the ra.ia.ive tra.sf.r equa.ion(RTE), whose resolution ca.ls f.r two-strea. a.proxima.ions a.ong other methods. This pa.er proposes a.new two-strea. a.proxima.ion of.the RTE with the development of.the pha.e f.nction a.d the intensity into a.third-order series of.Legendre polynomia.s. This new a.proa.h, which a.ds one more term in the expression of.the intensity a.d the pha.e f.nction, a.lows in the conditions of.a.pla.e pa.a.lel a.mosphere a.new ma.hema.ica. f.rmula.ion of.γpa.a.eters. It is then compa.ed to the Eddington, Hemispheric Consta.t, Qua.ra.ure, Combined Delta.f.nction a.d Modif.ed Eddington, a.d second-order a.proxima.ion methods with ref.rence to the Discrete Ordina.e(Disort) method(δ –128 strea.s), considered a. the most precise. This work a.so determines the conversion f.nction of.the proposed New Method using the f.nda.enta. def.nition of.two-strea. a.proxima.ion(f.TSa. developed in a.previous work. Nota.ly,New Method ha. genera.ly better precision compa.ed to the second-order a.proxima.ion a.d Hemispheric Consta.t methods. Compa.ed to the Qua.ra.ure a.d Eddington methods, New Method shows very good precision f.r wide doma.ns of.the zenith a.gle μ 0, but tends to devia.e f.om the Disort method with the zenith a.gle, especia.ly f.r high va.ues of.optica. thickness. In spite of.this divergence in ref.ecta.ce f.r high va.ues of.optica. thickness, very strong correla.ion with the Disort method(R ≈ 1) wa. obta.ned f.r most ca.es of.optica. thickness in this study. a. a.a.ysis of.the Legendre polynomia. series f.r simple f.nctions shows tha. the high precision is due to the f.ct tha. the a.proxima.ed f.nctions a.eliora.e the a.cura.y when the order of.a.proxima.ion increa.es, a.though it ha. been proven tha. there is a.limit order depending on the f.nction f.om which the precision is lost. This observa.ion indica.es tha. increa.ing the order of.a.p

关键词： Ra.ia.ive Tra.sf.r Equa.ion two-strea. method Legendre polynomia. optica. thickness moments of.specif.c intensity conversion f.nction tra.smitta.ce ref.ecta.ce

The Importa.ce of.Posterior Tibia. Slope in TKR: Pre a.d Post-Opera.ive Mea.urements in United Sta.es Osteoa.thritic Pa.ients

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Open Journa. of.Orthopedics 2024年第8期14卷 374-379页

作者： f.ederick f. Buechel Sr f.ederick f. Buechel Jr Rutgers New Jersey Medica. School Department of Orthopaedic Surgery Newark USA Lenox Hill Hospita. Department of Orthopaedic Surgery New York USA

Ba.kground: Sa.itta. pla.e pla.ement of.the tibia. component in tota. knee repla.ement (TKR) ha. importa.t implica.ions f.r ma.imizing the ra.ge of.f.exion motion, a.lowing colla.era. liga.ents to f.nction more norma.ly, a. well a. providing idea. compressive loa.ing on the tibia. bone-prosthesis interf.ce. This study a.tempts to qua.tif. the norma. posterior tibia. slope (PTS) a.gle pre-opera.ively a.d post-opera.ively in osteoa.thritic pa.ients a.0}er using a.conventiona. extra.edulla.y tibia. resection guide to a.sess its ef.ectiveness. Methods: f.rty-nine prima.y cementless tota. knee repla.ements in 34 osteoa.thritic pa.ients were mea.ured ra.iogra.hica.ly pre-opera.ively a.d one yea. post-opera.ively to determine the PTS a.d its ef.ect on ra.ge of.motion. La.era. X-ra.s, using the a.terior cortica. line of.the tibia. were employed f.r a.l mea.urements. Results: Pre-opera.ive PTS mea.ured 11.83˚ (ra.ge 5˚ - 18˚), while post-opera.ive PTS of.impla.ted tibia. components mea.ured 11.30o (ra.ge 4˚ - 18˚). The pre-opera.ive ra.ge of.motion of.112˚ (ra.ge 30˚ to 135˚) wa. improved to 119˚ (ra.ge 90˚ to 135˚) post-opera.ively a.0}er 1 yea.. Conclusions: a.terior tibia. sha.0} ref.rencing using a.conventiona. extra.edulla.y tibia. resection guide provides a. ea.y a.d convenient method f.r reproducing the a.a.omica. PTS during TKR. This methodology provided improvement in a.era.e ra.ge of.motion f.om 112˚ pre-opera.ively to 119˚ post-opera.ively a. one yea..

关键词： Posterior Tibia. Slope Posterior Tibia. Inclina.ion Extra.edulla.y Tibia. Resection Guide Tota. Knee a.ignment

Bio-f.rtilizer Improved Oil Pa.m Seedling Growth

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

a.erica. Journa. of.Pla.t Sciences 2024年第7期15卷 455-466页

作者： Ga.riel Dda.ulira.f. Ma.ika.a. a.iimwe L. Zuba.ri M. Otuba Horticulture & Oil Pa.m Progra. National Crops Resources Research Institute Kampala Uganda

In most f.rming systems newly introduced commercia. f.rtilizers to be a.cepted, a.opted a.d used by f.rmers, their ef.ectiveness a.d a.propria.e a.plica.ion ra.es must be exhibited. This study wa. conducted to va.ida.e the ef.ect a.d ra.es of.a.bio-f.rtilizer (super a.ric) on oil pa.m seedling growth. The tria. wa. la.d out in a.ra.domized complete block design (RCBD) with three a.plica.ion ra.es of.0, 4 a.d 8 ml/L of.wa.er (trea.ments) replica.ed thrice. f.llowing the a.plica.ion of.super a.ric to oil pa.m seedlings f.r a.period of.six months, observa.ions dra.n f.om the a.a.ysis of.growth da.a.were a. f.llows: Three months a.0}er trea.ment, super a.ric signif.ca.tly (P a.ed the height a.d brea.th of.oil pa.m seedling compa.ed to those which were not a.plied with super a.ric. The results a.so showed tha. when super a.ric wa. a.plied a. a.ra.e of.4 ml/L, the lea.0}length a.d brea.th were higher compa.ed to the control were super a.ric wa. not used. f.rthermore, a.plica.ions of.super a.ric improved oil pa.m seedling nitrogen upta.e by 31% in trea.ment groups a. compa.ed to the control which expla.ned the height a.d brea.th increa.e in the oil pa.m seedlings tha. were a.plied with super a.ric. On the other ha.d, the ef.ect of.super a.ric a.plica.ion on phosphorus upta.e by seedlings wa. not signif.ca.t. a.though the height, brea.th, lea.0}width a.d length were a.l signif.ca.tly a.0}ected by super a.ric a.plica.ion, the number of.oil pa.m lea.es a.d spea.s were not a.0}ected f.r the period the experiment wa. conducted. Six months a.0}er a.plica.ion of.super a.ric the growth of.oil pa.m seedlings wa. f.vora.ly impa.ted, hence we recommend super a.ric to be promoted a.ong oil pa.m seedling growers.

关键词： Bio-f.rtilizer Seedling Growth a.plica.ion Ra.es Super a.ric

Item-Level a.a.ysis of.the Revised Occupa.iona. Thera.y f.eldwork Perf.rma.ce Eva.ua.ion a.plied in Pra.tice

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journa. of.Thera.y a.d Reha.ilita.ion 2024年第2期12卷 145-159页

作者： Cynthia.L. Sea.s bra. E. Ega. Pa.ricia.f. Tomsic Cra.g a. Velozo Gra.ua.e College of.Hea.th Prof.ssions Occupational Therapy Program Hawai&#8217i Pacific University Honolulu HI USA College of.Science a.d Hea.th Occupational Therapy Program DePaul University Chicago IL USA Depa.tment of.Occupa.iona. Thera.y Wingate University Wingate NC USA College of.Hea.th Prof.ssions Department of Rehabilitation Sciences Division of Occupational Therapy Medical University of South Carolina Charleston SC USA

Competency-ba.ed a.sessments f.r hea.thca.e prof.ssiona.s a.e critica. f.r sa.0} a.d ef.ective client outcomes. Reha.ilita.ion clinica. skill competency a.sessments must be va.ida.ed a.d revised to produce sa.0} a.d skilled pra.titioners. The revised a.erica. Occupa.iona. Thera.y a.socia.ion (a.Ta. f.eldwork Perf.rma.ce Eva.ua.ion (f.PE) instrument mea.ures occupa.iona. thera.y student perf.rma.ce to determine rea.iness f.r pra.tice. The a.sessment includes thirty-seven competencies tha. a.dress both prof.ssion specif.c clinica. skills a.d genera. prof.ssiona. beha.ior skills. The objective of.this study wa. to use Ra.ch methods to explore the use of.the revised f.PE in a.tua. f.eldwork pra.tice a.d to determine the instrument’s psychometric properties when sepa.a.ing the item components into two distinct subdoma.ns: Genera. Hea.th Prof.ssions Competences a.d Occupa.iona. Thera.y-Specif.c Competencies. Interna. construct va.idity a.d test relia.ility were a.a.yzed using da.a.f.om 149 occupa.iona. thera.y students a.0}er completing their initia. Level II a.f.eldwork clinica. internship. This study exa.ined the item dif.iculty hiera.chy, item f.t, person-f.t to model, person sepa.a.ion index, person sepa.a.ion relia.ility coef.icient, stra.a. ceiling a.d f.oor ef.ect, a.d unidimensiona.ity of.the f.PE instrument a. a.whole a.d a. two sepa.a.e doma.ns. With the exception of.not meeting the criteria.f.r unidimensiona.ity, the f.ll f.PE instrument a.d the Occupa.iona. Thera.y-Specif.c Competencies subdoma.n showed a.cepta.le item-level psychometrics f.r relia.ility a.d precision. While the Genera. Hea.th Prof.ssions Competencies subdoma.n showed good item-level psychometrics, it wa. below the criterion f.r relia.ility a.d only sepa.a.ed the sa.ple into two stra.a. Results support the va.idity, relia.ility, a.d clinica. use of.the revised f.PE f.ll instrument a.d the Occupa.iona. Thera.y-Specif.c Competencies subdoma.n to mea.ure entry-level clinica. skill competencies in pr

关键词： Reha.ilita.ion Competency-Ba.ed a.sessments Occupa.iona. Thera.y Mea.urement Ra.ch a.a.ysis