简介:AbstractTwin anemia polycythemia sequence (TAPS) is a chronic form of unbalanced feto-fetal transfusion through minuscule placental anastomoses in monochorionic twin pregnancies, leading to anemia in the donor twin and polycythemia in the recipient twin. TAPS can occur spontaneously in up to 5% of monochorionic twins or can arise in 2%-16% of cases after incomplete laser surgery for twin-twin transfusion syndrome. TAPS can develop across the entire second and third trimester. Antenatal diagnosis for TAPS is reached via Doppler measurement of the fetal middle cerebral artery peak systolic velocity, showing an increased velocity in the donor, combined with a decreased velocity in the recipient. Treatment options for TAPS include expectant management, preterm delivery, intrauterine blood transfusion with or without a partial exchange transfusion, fetoscopic laser surgery and selective feticide. The best treatment option is unclear and is currently being investigated in an international multicenter randomized trial (the TAPS trial). Spontaneous fetal demise occurs in 5%-11% of TAPS twins, more often in donors (8%-18%) than in recipients (2%-5%). Severe long-term neurodevelopmental impairment is seen in 9% of TAPS twins, with donors having an increased risk for cognitive impairment and hearing problems (15%).
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简介:TheconceptoftheKingGeorgeIslandExpertGIS(KGI-XGIS)isintroduced.KGI-XGISisacombinationofarule-basedexpertsystemandaGISmeanttoformanintelligentspatialdecisionsupportsystem.Thesystemprovidesthespatialknowledgenecessaryfortheenvironmentalimpactassessmentprocessasdictatedbythe'MadridProtocol'forKingGeorgeIsland(SouthShetlandIslands,Antarctica).Italsoservesasinformationsystemtothescientificusercommunity.Topographicmaps,remotesensingdata,thematicmapsbasedonfieldsurveysandotherdigitaldatathesemustbecombinedanduseainthemostefficientway.Thereforeexpertknowledgeofdifferentdomainswillbecodedintoarule-basedexpertsystemwhichiscoupledtotheGIS.TohandletheexpertknowledgeandthespatialdataofdifferenttypesanddirrerentqualitytheKGI-XGISincorporatesknowledge-basedtechniquesandfuizzyreasoning.TheselectionofacampsiteontheicefreeareaofFildesPeninsulaanddataqualitymanagementareusedastwoexamplestodemonstratethecapabioitiesofthesystem
简介:TheGavdNeolithicMiningComplex(GNMC)nearBarcelonawasactiveduringtheNeolithicage,sinceca.6000BPuntilabout700yearsafter.Theseminesshowuptofivedifferentundergroundmininglevels,developedasgalleriesandchambers,communicatedthroughpits,drawingacomplexnetworkwithatotalknownlengthofover1000m.ThesearesomeoftheoldestundergroundminesinEuropebut,contrarytotherestofthemineworkingsknownofthesameepoch,thisistheonlyminingcomplexreportedtodatewhoseaimwasnotminingforconventionalsubstancesfortheepochsuchaschert,ochreorcopper.ThemainaimoftheGNMCwasvariscite,agreenphosphatemineralsimilartoturquoisethatcanbeeasilycutandpolishedtomakeornamentssuchasnecklacesorbracelets.Thispaperisfocusedmainlyonthegeologicalmappingandexaminationinsurfaceandundergroundexposuresofthedifferentphosphatemineralizationtypes(strataboundandveins)andotherrelevantgeologicalfeaturessuchasdiscordances,thrusts,faults,andfolds.
简介:嵌入的词,指自然的词的低维的稠密的向量代表,在许多自然语言处理任务表明了它的力量。然而,它可以受不了作为训练数据在免费文章语料库包含的不精密、不完全的信息。处理这挑战,有许多研究,作为另外的信息来源利用知识图改进词嵌入的质量。尽管这些研究获得了某些成功,他们关于知识图忽视了一些重要事实:1)在知识图的许多关系是many-to-one,一对多或平的many-to-many,而非简单地一对一;2)在知识图的大多数头实体和尾巴实体来自很不同的语义空格。为了处理这些问题,在这份报纸,我们建议一个新算法说出ProjectNet。ProjectNet在与不同低等级的设计矩阵转变他们以后为在头和尾巴实体之间的关系建模。低等级的设计能允许在实体之间的非一对一的关系,当为头和尾巴实体的不同设计矩阵允许他们在不同语义空格发源时。试验性的结果表明那ProjectNet产出更精确的词比以前的研究嵌入,并且因此在各种各样的自然语言处理任务导致清楚的改进。
简介:AbstractObjective:Awareness regarding the negative effects of ultraviolet radiation are commonly neglected in Asian countries. This study sought to evaluate the ultraviolet radiation knowledge and photoprotective behaviors of university students in Indonesia.Methods:This observational cross-sectional was conducted at Pelita Harapan University, Indonesia.Results:A total of 89 (45.4%) medical students and 107 (54.6%) nonmedical students participated in this study. Their mean age was 21.03 ± 2.03 years, and 46.4% of them had Fitzpatrick type III skin. Medical students as well as older students exhibited a higher level of knowledge regarding photoprotection (P ≤ 0.05). Factors related to good photoprotective behaviors were sex, older age, and average expenditure on skincare. Further analysis revealed that a high level of knowledge regarding photoprotection was related to acceptable photoprotective behaviors (P = 0.01; odds ratio = 1.97; 95% confidence interval = 1.13-3.54).Conclusions:Knowledge regarding sun-related damage and practice of photoprotective behaviors were low among the participants. The results indicate that formal education and academic subjects should incorporate the topic of sun-related damage and promote the practice of photoprotective behaviors early on to increase awareness among populations.
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简介:Toolmanagementisnotasingle,simpleactivity,itiscomprisedofacomplexsetoffunctions,especiallyinaflexiblemanufacturingsystem(FMS)environment.Theissuesassociatedwithtoolmanagementincludetoolrequirementplanning,toolreal-timescheduling,toolcribmanagement,toolinventorycontrol,toolfaultdiagnosis,tooltrackingandtoolmonitoring.Inordertomaketoolsflowinto/outofFMSefficiently,thisworkisaimedtodesignaknowledge-baseddecisionsupportsystem(KBDSS)fortoolmanagementinFMS.Firstlyanoverviewoftoolmanagementfunctionsisdescribed.ThenthestructureofKBDSSfortoolmanagementandtheessentialagentsinthedesignofKBDSSarepresented.FinallytheindividualagentsofKBDSSarediscussedfordesignanddevelopment.