简介:Amomentactuatorwithdirectdetectionofforcesisdescribed,Momentfrequencyre-sponseandmomentexcitationpurityasperformancecriteriaareproposed.Methodsfortheperfor-mancecalibrationoftheactuatorarepresented.Assessmentiscarriedoutbymeansofthereciprocityprinciple.
简介:Objective:Establishnormativedatafortympanicelectrocochleography(TMECochG)parametersinnormalhearingadultswithoutMeniere'sdisease's(MD)symptoms.DescribeTMECochGvariablesthathelptodistinguishnormalfromMDears.Materialandmethods:Weenrolled100subjects(N?200ears),59females,agedbetween19and71yearsfrom09/2010to04/2014.Inclusioncriteria:normalotomicroscopy,hearingthresholds25dBnHLfrom250to4000Hz,normaltympanogram,nosymptomsofMDaccordingtotheAAO-HNS1995criteriaandGibson'sscore<7.Weexcludedsubjectswithdizziness,auralfullnessorothersymptomsofendolymphatichydrops.Thefollowingparameterswereanalyzed:SP/APamplituderatio,SP/AParearatioandthedifferencebetweenAPlatencywithrarefactionandcondensationstimuli.Results:Therewasnosignificantdifferencebetweenrightandleftears(Intraclasscorrelationcoefficient<0.6).SP/APamplituderatiovariedbetween0.084and0.356andSP/AParearatiobetween0.837and1.671(percentiles5and95).TheAPlatencydifferencetorarefactionandcondensationclickswasbetween0.0and0.333ms.Conclusion:NormativedataforTMECochGparameterswereestablishedin100normalhearingsubjectswithoutMD.Thesedatacanbeusedtodistinguishnormalfrompathologicalfindingsandinfollow-upofMDpatients.
简介:摘要:在实施房屋建设项目时,多种风险和不确定因素层出不穷,如果管理不佳,可能导致项目推迟、超越预算,引发一系列负面影响。本文以识别和应对房建项目中的风险为中心,进行深入探讨。全方位识别房建项目的各项风险,包括设计、施工、合同、环境等各个环节的风险,并适当设置风险识别指标体系。通过结合定性和定量的分析手段,对众多风险因素进行影响度评估,为风险应对提供数值参考。根据风险识别和影响评估的结果,提供了一整套风险应对措施,涉及到优化设计、规范施工、强化合同管理以及环境保护等方面,意在减少风险对房屋建设项目带来的潜在损失。通过案例分析验证了风险管理策略的实际效果。研究结果对于指导房建项目的风险管理具有重要参考价值。