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김선회 한국언어학회 2008 언어 Vol.33 No.4
This paper analyzes the typology of assimilation (voicing assimilation and place assimilation), focusing on the 'grandfather effect' (McCarthy 2002, 2003a) observed in the case where the assimilation to marked structures is not allowed but the assimilation to unmarked structures is allowed. It recognizes that Hall (2007) accurately points out a flaw in McCarthy (2002, 2003a) where the typological difference in assimilation cannot be explained. This paper, however, shows that contrary to Hall's argument, the flaw has not been caused by the separation of markedness constraints, and proposes that IDENT(F) in McCarthy's analysis should be replaced with MAX(F) constraints. This proposal means that IDENT(voice) should be replaced with MAX(voice) in voicing assimilation and IDENT(place) should be replaced with the universally fixed constraint ranking MAX(dors), MAX(__cor) » MAX(lab) » MAX(cor), MAX(__lab|dors), which originates from Jun (1995), to retain the separation of markedness constraints. Further, this paper shows that the separation strategy of IDENT(F) also accounts for the grandfather effect cases in assimilation.
Enhancement of carbon felt electorode for vanadium redox flow battery by grephene oxide
김선회 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.0
Vanadium Redox Flow Battery (VRFB) is one of large-capacity energy storage system which uses vanadium for both negative and positive electrolytes. The major parts of VRFB system are electrolyte, membrane and electrode. Recently, carbon felt is the most popular material for carbon electrode. In this work the carbon felt electrode was investigated in the effort to improve electrochemical characteristics. The suface of carbon felt was treated with Graphene Oxide (GO). By changing GO concentration in coating on the surface of the carbon felt.