... An assessment of healthcaresystemaccessibility of localcommunities in YenChauDistrict,SonLaProvinceTranAnhTuan1,*,TranVanTuan1,LeTuan An 2,HoangThanhTung11College of Science,VNU2CentreforEnvironmentalStudies,Alliance of VietnamCooperativeReceived10October2007;received in revisedform28November2007Abstract.SonLaHydroelectricProjecthasdesignedtheplantwiththecapacity of 2400MW.Itwillprovideelectricityfornotonlythenorthwestregionbutalsofortheotherregions of Vietnam.TheprojectwasapprovedbytheVietnamNationalAssemblyonDecember16th,2002, in detail:SonLaHydroelectric ... S. Liu, Analysis of the impact of theMRTsystemonaccessibility in Singaporeusing an integrated GIS tool, Journal of TransportGeography12(2004)89.TranAnhTuanetal/VNUJournal of Science,EarthSciences23(2007)265‐272268grid ... newquantitativeandcoremethod.Accessibilityisthebroadconceptandithasa wide range of applications, in particular:urban studies (housing planning, socialfacilities planning...