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ｗｈｅｒｅＩｖｉｔｉｓｐａｒｔｉａｌｅｌａｓｔｉｃｉｔｙｏｆｏｕｔｐｕｔｗｉｔｈｒｆ＇ｓｐｅｃｔｔｏｉ－ｔｈｆａｃｔｏｒｉｎｐｕｔ，ａｎｄｂｉｔ＝Ｘｉ，／Ｌ，ｔｈｅｉｎｔｅｎｓｉｔｙｏｆｉ－ｔｈｆａｃｔｏｒｔｖｉｔｈｒｅｓｐｅｃｔｔｏｌａｂｏｒＩｎｐｕｔ．Ｏｎｔｈｅｒｉｇｈｔ－ｈａｎｄｓｉｄｅｏｆｌ；ｈｅａｂｏｖｅｅｑｕａｔｌｏｌｌ，ｔｈｅｆｉｒｓｔｃｏｍｐｏｎｅｎｔｉｓｋｎｏｗｎａｓｔｈｅ＂ｅｘｏｇｅｎｏｕｓｔｅｃｈｎｉｃａｌｐｒｏｇｒｅｓｓ＂，ｎｌａｌｎｌｙｄｕｅｔｏａ＇ｌｖａｎｃｅｉｎｋｎｏ＼ｖｉｅｄｇｅ；ｔｈｅｓｅｃｏｎｄｃｏｍｐｏｎｅｎｔｉｓａｔｔｒｉｂｕｔｅｄｔｏｓｃａｌｅｅｃｏｎｏｍｉｅｓｏｒｄｉｓｅｃｏｎｏｍｌｅｓ，ｔｈｅｔｈｉｒｄｃｏｍｐｏｌｌｅｎｔｉｓｔｈｅｔｅｃｈｎｏｌｏｇｉｃａｌｃｈａｎｇｅ，ｄｅｔｅｒｍｉｎｅｄｂｙｍａｒｇｉｎａｌｒａｔｅｓｏｆｓｕｂｓｔｉｔｕｔｉｏｌｌｏｆｆａｃｔｏｒｓ，ｆａｃｔｏｒｉｎｔｅｎｓｉｔｉｅｓｗｉｔｈｒｅｓｐｅｃｔｔｏｌａｂｏｒｉｎｐｕｔａｎｄｔｈｅｉｒｃｈａｎｇｅｓ．Ａ＞ｉｌｌｅｘｉｔｌｌｌｐｌｅｏｆｅｌｌｌｐｌｏｙｌｌｌｇｔｈｅ１ｌｌｅｔｈｏｄｏｆ?
whereIvitispartialelasticityofoutputwithrf'specttoi-thfactorinput, andbit = Xi, / L, theintensityofi-thfactortvithrespecttolaborInput. Ontheright-handsideofl; heaboveequatloll, thefirstcomponentisknownasthe “exogenoustechnicalprogress”, nlalnlyduetoa'lvanceinknoviedge; thesecondcomponentisattributedtoscaleeconomiesordiseconomles, thethirdcompollentisthetechnologicalchange, determinedbymarginalratesofsubstitutiolloffactors, factorintensitieswithrespecttolaborinputandtheir hanges. A> illexitlllpleofelllploylllgthe1llethodof?