Evaluate the valence intensity of the following sentence, considering the mood of the author. Give a score between 0 and 1 inclusive, where 0 is the most negative and 1 is the most positive.
Sentence: An emphasis on preserving, rather than practicing, native culture arises: indigenous authenticity is maintained by sustaining knowledge of traditional practices and beliefs without fully embracing them on a day-to-day basis (Gow and Rappaport 2002: 66-67).