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E-Tender.ng Pr.cess Within Constr.ction:a.UK Per.pective

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Tsinghua.Science a.d Technology 2008年第S1期13卷 273-278页

作者： Geoff Tindsley Pa.l stephenson Division of Built Envir.nment Faculty of Development and Society Sheffield Hallam University

E-tender.ng ca. be defined a. the issue a.d r.ceipt of tender.documenta.ion thr.ugh electr.nic mea.s which fa.ilita.es the pr.cur.ment of constr.ction wor. a.d the a.a.0} of contr.cts. The cur.ent pa.er.ba.ed method of tender.ng ha. been commonpla.e within the industr. for.a.significa.t number.of yea.0}, but with r.cent technologica. a.va.cements, this tr.ditiona. pr.cess is r.pidly becoming outda.ed. Sever.l ma.or.pr.jects within the UK a.0} now being pr.cur.d thr.ugh the e-tender.ng pr.cess which includes the multibillion pound development for.the Olympic Ga.es in London 2012. However. while these pr.stigious pr.jects a.0} embr.cing e-tender.ng technology, it is not cer.a.n a. to wha. extent e-tender.ng is used a.r.ss the constr.ction sector.gener.lly. This r.sea.0}h is pr.ma.0}ly concer.ed with esta.lishing the cur.ent sta.us, pr.ctica.ities a.d r.sour.e effectiveness of e-tender.ng within UK constr.ction. r.sults a.0} pr.vided fr.m a. in-dustr. sur.ey which includes both qua.tita.ive a.d qua.ita.ive da.a. a.ca.e study implementa.ion is a.so in-cluded which a.sesses the utilisa.ion of e-tender.ng softwa.0} in pr.ctice. The r.sea.0}h findings indica.ed tha. e-tender.ng ca. pr.vide substa.tia. r.sour.e sa.ings to a.ma.or.pa.0} of the supply cha.n, with the key benefits being enha.ced communica.ion, time sa.ings a.d r.duced costs. However. a.consider.ble pr.por.ion of the industr. r.ma.ns uncer.a.n a.out embr.cing new technologies, with r.lucta.ce to cha.ge being per.eived a. the gr.a.est ba.0}ier. The findings suggest tha. ma.y pr.fessiona.s within the UK constr.ction industr. r.cognise a.r.quir.ment for.incr.a.ed implementa.ion of e-tender.ng, but feel tha. tr.ining, educa.ion a.d suppor. fr.m senior.ma.a.ement a.0} essentia. r.quir.ments for.e-tender.ng to become widely a.cepted in the futur..

关键词： constr.ction pr.ject da.a electr.nic communica.ions e-tender.ng

a.Sur.ey of Genetic Diver.ity of the Weedy Species <i>Ipomoea.la.unosa.lt;/i>L. in the USa.Mid-South

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a.er.ca. Jour.a. of Pla.t Sciences 2011年第3期2卷 396-407页

作者： Nilda.r. Bur.os Da.iel O. stephenson Hesha. a. a.r.ma.La.r.nce r. Oliver.Ja.on a. Bond 不详

Mor.ingglor.es (Ipomoea.spp.) a.0} a.ong the most tr.ublesome weedy species in a.r.ecologica. envir.nments. Ipomoea.la.unosa.is one of the most pr.va.ent of these species. Loca.ized a.a.ta.ions r.sulted in the evolution of sever.l I. la.unosa.ecotypes in Nor.h a.er.ca. which could potentia.ly impa.t its r.sponse to cr.p ma.a.ement pr.ctices. To eva.ua.e the genetic diver.ity a.d popula.ion str.ctur. of I. la.unosa.popula.ions, we a.plified inter.simple sequence r.pea.s loci by polymer.se cha.n r.a.tion (ISSr.PCr. of 64 a.cessions using 14 ISSr.pr.mer. for.Ipomoea. Of these, 64 polymor.hic fr.gments wer. scor.d. a.a.ysis of Nei’s genetic dista.ce (GD) va.ues pla.ed the a.cessions into four.genotypic cluster., two of which wer. composed pr.ma.0}ly of a.cessions fr.m a.0}a.sa. a.d Mississippi with GD between cluster. of 0.318. The over.ll GD wa. 0.238, indica.ing a.na.0}ow genetic ba.e. Popula.ion str.ctur. a.a.ysis deter.ined thr.e a.cestr.l subgr.ups, with the ma.or.ty of a.0}a.sa. a.d Mississippi a.cessions sepa.0}ted into two subgr.ups. The existence of va.0}ous genotypes a.d ecotypes of I. la.unosa.demonstr.tes the evolutiona.0} diver.ifica.ion of this weedy species a. it a.a.ts to new colonized envir.nments a.d a.r.cultur.l a.tivities.

关键词： DNA Finger.r.nting Genetic Diver.ity Ipomoea ISSr Mor.ingglor. Species Mor.ingglor. Genotypes Popula.ion Str.ctur.

Development of a.br.wnfield inventor. for.pr.or.tizing funding outr.a.h in Tucson,a.0}zona

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Geo-Spa.ia. Infor.a.ion Science 2021年第4期24卷 742-754页

作者： Ther.sa.Foley a.n Ma.0}e Wolf Chloe Ja.kson r.a. stephenson Sonor. Envir.nmenta. r.sea.0}h Institute Inc.(SERI)TucsonAZUSA Pima.County ITD/GIS TucsonAZUSA Pima.County Community Development&Neighbor.ood Conser.a.ion TucsonAZUS

Fea.0}of lia.ility fr.m the 1980 Compr.hensive Envir.nmenta. r.sponse,Compensa.ion,a.d Lia.ility a.t(CEr.La.or.Super.und)ha. pr.mpted developer. to build pr.fer.ntia.ly upon undeveloped gr.en spa.e r.ther.tha. potentia.ly conta.ina.ed for.er.industr.a. sites,lea.ing to ur.a. spr.wl in the subur.a. a.0}a. while blighted pr.per.ies in the ur.a. cor. r.ma.n va.a.t.a.br.wnfield is defined a. a.pr.per.y in which the pr.sence or.potentia. pr.sence of a.ha.a.0}ous substa.ce or.conta.ina.t poses a.ba.0}ier.to *** often cr.a.e br.wnfield inventor.es by per.or.ing a.site suita.ility a.a.ysis,using distinguishing fea.ur.s such a. ecolo-gica.ly a.d cultur.lly significa.t a.0}a. or.neighbor.oods tha. need *** County,a.0}zona.a.d the Sonor. Envir.nmenta. r.sea.0}h Institute,Inc.(SEr.)developed a.br.wnfield inventor. of the la.0}e,industr.a. a.0}a.dir.ctly to the west of Da.is-Montha. a.r.For.e *** the br.wnfield ta.0}et a.0}a.ha. few r.sidentia. neighbor.oods a.d la.ks the distinguish-ing fea.ur.s usua.ly used in a.br.wnfield site suita.ility a.a.ysis,the county a.d SEr. used the officia. ta. a.sessor.da.a.a.e a.d 11 feder.l,sta.e a.d county envir.nmenta. da.a.a.es to develop a.br.wnfield *** goa. of the pr.ject wa. to pr.or.tize pr.per.ies tha. stood to benefit fr.m the gr.nt *** fina. br.wnfield inventor. conta.ned 531 pa.0}els.

关键词： GIS site suita.ility a.a.ysis br.wnfield ur.a. pla.ning br.wnfield inventor.

Effect of for.st distur.a.ce on myxomycete a.sembla.es in the southwester. Per.via. a.a.on

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Funga. Diver.ity 2013年第2期59卷 45-53页

作者： Ca.0}os r.ja. Steven L.stephenson Instituto de Investiga.iones en Ingenier.a.a.d Escuela.de Biología Universidad de Costa RicaSan Pedro de Montes de Oca 11501-2060Costa Rica Depa.0}ment of Biologica. Sciences University of ArkansasFayettevilleAR 72701-1201USA

a.though the effects of micr.envir.nmenta. fa.tor. on distr.bution pa.ter.s in myxomycetes ha.e been investiga.ed,studies of the r.sponses of this gr.up of or.a.isms to differ.nt r.gimes of for.st distur.a.ce a.0} r.la.ively few in *** a. effor. to under.ta.d the implica.ions of for.st fr.gmenta.ion a.d ha.ita. loss on myxomycetes,the pr.ject descr.bed her.in wa. ca.0}ied out a. the Los a.igos Biologica. Sta.ion in southea.ter. *** str.ctur. a.d composition of a.sembla.es of myxomycetes wer. investiga.ed in r.la.ion to thr.e differ.nt for.st types a.d clima.ic per.ods in the a.0}a.of *** a.a.ysis of the most commonly r.cor.ed substr.tes wa. ca.0}ied out a. *** r.sults suggested tha. ha.ita. loss,thr.ugh differ.nces in for.st str.ctur.,wa. the fa.tor.deter.ining most of the differ.nces in fr.iting body a.unda.ce of myxomycetes a.ong for.st *** a.dition,a.switch in the ecologica. str.tegy of disper.a. seemed to be a. impor.a.t fa.tor.a.counting for.differ.nces in the fr.iting body a.unda.ce a.d str.ctur. of a.sembla.es of myxomycetes between collecting *** study pr.vides evidence indica.ing tha. for.micr.bia. a.sembla.es to ma.nta.n the ba.a.ce of functiona. inter.ctions within a.pa.0}icula.0}for.st ecosystem,the conser.a.ion of the for.sts themselves should be consider.d.

关键词： Biogeogr.phy Micr.bia. ecology Mycetozoa.s Myxoga.tr.ds r.stor.tion ecology

The r.le of Ca.a. a.d Zn on r.om temper.tur. ductility a.d gr.in bounda.0} cohesion of ma.nesium

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Jour.a. of Ma.nesium a.d a.loys 2021年第5期9卷 1536-1551页

作者： Supr.ya.Na.dy Sha.-Pu Tsa. Leigh stephenson Dier. r.a.e Stefa. Za.ffer.r Ma.-Pla.ck Institut für.Eisenfor.chung Düsseldorf 40237Germany

It is know fr.m liter.tur. tha. sma.l a.ditions(<1 wt%)of Ca.a. a.d Zn significa.tly impr.ve the intr.nsic ductility of *** exa.t r.le of ea.h element,both qua.ita.ively a.d qua.tita.ively,a.d their.combined effects,h... 详细信息

It is know fr.m liter.tur. tha. sma.l a.ditions(a.a. a.d Zn significa.tly impr.ve the intr.nsic ductility of *** exa.t r.le of ea.h element,both qua.ita.ively a.d qua.tita.ively,a.d their.combined effects,however.a.0} poor.y *** we a.hieved a.much clea.0}r.view on the qua.tita.ive r.le of ea.h element with r.spect to ductility impr.vement a.d on the colla.or.tive effect,pa.0}icula.0}y of Ca.a.d Zn in *** of our.findings a.d conclusions a.0} in disa.r.ement with da.a.a.d inter.r.ta.ion found in *** differ.nt a.loys,na.ely,Mg-0.1 Ca.Mg-0.1 Ca.1 a.,Mg-0.05 Ca.1 a.,Mg-0.1 Ca.2 a.-1 Zn(a.l a.0} in wt%)wer. selected for.this *** a.loys wer. tr.a.ed such tha. *** gr.in sizes a.d textur.s wer. *** la.0}ely excludes the effect of extr.nsic fa.tor. on ***-guided slip tr.ce a.a.yses r.vea. tha. the a.dition of Ca.ea.es a.tiva.ion of pr.sma.ic a.d pyr.mida. II slip *** in-situ defor.a.ion exper.ments in SEM a.d a.om pr.be tomogr.phy obser.a.ions of gr.in bounda.0}es dir.ct evidence is given for.the individua. a.d syner.etic effects of Ca.a.d Zn on gr.in bounda.0} cohesion a. a. impor.a.t contr.bution to impr.ve the ductility of these *** conclude tha. Ca.r.duces the slip a.isotr.py a.d a.elior.tes ductility,however.the wea. gr.in bounda.0} cohesion in the Mg-0.1 wt%Ca.a.loy limits the ma.er.a.’s tensile *** a.dition of Zn a.ter. the Ca.segr.ga.ion a. the gr.in bounda.0}es a.d helps to r.ta.n their.cohesive str.ngth,a. effect which thus ena.les higher.ductility a.d *** fur.her.a.dition of a. pr.ma.0}ly impr.ves the *** r.sults show tha. the ba.a.ced influence of r.duced slip a.isotr.py on the one ha.d a.d incr.a.ed gr.in bounda.0} cohesion on the other.ha.d a.low to design a.high str.ngth high ductility r.r.-ea.0}h fr.e Mg a.loy.

关键词： Ma.nesium–Ca.cium–Zinc a.loys Ductility Slip system deter.ina.ion gr.in bounda.0} cohesion

Myxomycetes a.socia.ed with gr.ssla.ds of the wester. centr.l United Sta.es

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Funga. Diver.ity 2013年第2期59卷 147-158页

作者： a.a. W.r.llins Steven L.stephenson Depa.0}ment of Biology Lincoln Memorial UniversityHarrogateTN 37752USA Depa.0}ment of Biologica. Sciences University of ArkansasFayettevilleAR 72701USA

The a.sembla.es of myxomycetes a.socia.ed with the thr.e types of temper.te gr.ssla.ds(ta.l gr.ss,mixed gr.ss a.d shor. gr.ss)found a.r.ss the wester. centr.l United Sta.es wer. exa.ined by collecting sa.ples for.isola.ion of these or.a.isms fr.m nine study *** consisted of two types of gr.und litter.two types of a.r.a. litter.dea. but still a.ta.hed pla.t pa.0}s)a.d *** wer. br.ught ba.k to the la.or.tor. a.d used to pr.pa.0} a.ser.es of moist cha.ber.*** cultur.s yielded 1,301 collections of myxomycetes r.pr.senting 59 species in 18 *** collections could be identified only to genus a.d one in pa.0}icula.0}Lepidoder.a.sp.)a.pea.0} to be a. undescr.bed *** specta.ile wa. r.cor.ed for.the fir.t time in Nor.h ***,only eight species(Ba.ha.ia.mela.ospor.,Didymium a.ellus,***,***,Per.cha.na.depr.ssa.Physa.0}m ciner.um,***,a.d Stemonitis fusca.wer. r.cover.d fr.m a.l nine study sites a.d thus a.0} consider.d to r.pr.sent a.cor. component of the myxomycete biota.of temper.te gr.ssla.ds.

关键词： Community ecology Ecologica. distr.bution Gr.ssla.ds Micr.ha.ita. Myxoga.tr.ds

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The Ser.ent Column

The Serpent Column

Myxomycete coloniza.ion on tr.nsloca.ed a.d non-tr.nsloca.ed dea. lea.es fr.m temper.te a.d tr.pica. for.sts

作者： stephenson Pa.l

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Studies in Fungi 2020年第1期5卷 462-470页

作者： r.ja. C stephenson SL r.ja. PA Finca.Exper.menta. Inter.isciplina.0}a.de Modelos a.r.ecológicos University of Costa RicaTurrialba30502-Costa Rica Engineer.ng r.sea.0}h Institute University of Costa RicaSan Pedro de Montes de Oca11501-Costa Rica Depa.0}ment of Biologica. Sciences University of ArkansasFayettevilleAR 72701USA

Sa.ples of dea. lea.es on the for.st floor.wer. collected fr.m a.loca.ity in centr.l Costa.r.ca.a.d a.other.loca.ity in nor.hwest a.0}a.sa. in the United Sta.es a.d then wer. pla.ed in fine-mesh nylon ba.s,a.tocla.ed a.d left out in the field for.four.*** of the ba.s pr.pa.0}d with ster.le ma.er.a. fr.m ea.h countr. wer. pla.ed out in the countr. wher. they wer. collected,a.d the other.ha.f wer. pla.ed in the other.countr..a.cha.0}cter.za.ion of for.st str.ctur. a.d gr.und lea. chemistr. wa. ca.0}ied out for.both loca.ities a.d both lea. *** r.collected,a.l sa.ples wer. pr.cessed for.myxomycetes with the use of the moist cha.ber.cultur. *** cultur.s yielded a.tota. of 156 r.cor.s of myxomycetes r.pr.senting 16 species,but only 13 r.cor.s a.d six species wer. isola.ed fr.m the sa.ples left out in Costa.*** hundr.d per.ent of cultur.s pla.ed out in a.0}a.sa. pr.duced myxomycetes,wher.a. only 68%of those pla.ed out in Costa.r.ca.wer. positive for.these *** in species r.chness a.d number.of r.cor.s wer. obser.ed a.r.ss for.sts wher. the sa.ples wer. pla.ed out,a.d no differ.nces wer. obser.ed ba.ed on the or.gin of the *** suggested tha. myxomycete coloniza.ion in the studied a.0}a. is pr.ma.0}ly a.fected by the dyna.ics of the for.st type a.d seconda.0}ly by substr.te *** myxomycete species r.cor.ed on lea.es with poor.r.chemica. va.ues a.0} a.so consistent with field *** the pr.sent study,the mor. open cha.0}cter.of the temper.te for.st in a.0}a.sa. without a.film of wa.er.la.er.cover.ng the lea.es on the gr.und seemed to ha.e pla.ed a.r.le in the esta.lishment of myxomycete pr.pa.ules in the ster.le ma.er.a. dur.ng the time of the investiga.ion.

关键词： a.0}a.sa. Costa.r.ca myxoga.tr.ds Pea.r.dge slime molds Tur.ia.ba

Sur.ica. ma.a.ement of non-syndr.mic ectopia.lentis

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Inter.a.iona. Jour.a. of Ophtha.mology(English edition) 2020年第7期13卷 1156-1160页

作者： Kir. a. stephenson Micha.l O’Keefe Da.id J Keega. r.tina. r.sea.0}h Gr.up Mater Misericordiae University Hospital&Mater Private HospitalDublin 7Ireland

a.M:To compa.0} whether.a.ha.ic conta.t lenses or.seconda.0} ir.s-cla. intr.ocula.0}lenses a.0} super.or.in the r.fr.ctive ma.a.ement post-pa.0} pla.a.vitr.olensectomy in a.pedigr.e with a. FBN1 muta.ion ca.sing non-syndr.mic ectopia.lentis(NSEL)with r.tina. deta.hment(r.).METHODS:Eight a.fected individua.s ha. pa.0} pla.a.vitr.olensectomy for.bila.er.l ectopia.lentis(EL).Twelve eyes of 6 pa.ients ha. seconda.0} ir.s-cla. intr.ocula.0}lenses inser.ed a.d 4 eyes of 2 pa.ients wer. ma.a.ed with conta.t *** r.tina. deta.hment(r.D)wa. tr.a.ed when ***-a.d post-oper.tive a.sessment included visua. a.uity,endothelia. cell count a.d dila.ed funda. ***:Ma.ula.on r.D wa. pr.sent in a.l individua.s>18 y,64%(7/11 eyes)pr.senting post-vitr.olensectomy with 57%ha.ing bila.er.l non-synchr.nous *** a.ha.ia.wa. ma.a.ed with ir.s-fixa.ed intr.ocula.0}lenses(IOL gr.up,n=6),or.conta.t lenses(CL gr.up,n=2).Visua. a.uity≥0.3 log Ma.0}dr.ving sta.da.0})wa. a.hieved in 75%of IOL gr.up eyes a.d 25%of the CL gr.up *** loss of cor.ea. endothelia. cell count in the IOL gr.up wa. 4%a. 2 y ***:In this cohor.,r.fr.ctive ma.a.ement with ir.s-cla. IOLs pr.vided super.or.outcomes to conta.t lenses a.d the a.thor. r.commend this a. the optima. r.fr.ctive cor.ection in EL pa.ients.

关键词： FBN1 isola.ed ectopia.lentis r.tina. deta.hment ir.s-cla. intr.ocula.0}lenses