The application of virtual reality technology in art appreciation teaching can effectively guide students to recognize and appreciate works from the visual, auditory tactile aspects. By simulating reproduction real scene works, students' cognitive ability be improved. This paper aims apply teaching, improve appreciation, adopt quantitative qualitative modes research. quasi-experimental study us...

â â â  given companies’ dynamic responses to expected exchange rate changes, this article improves on current methods of measuring exposure to foreign exchange rate changes by breaking down the spot exchange rate changes into expected changes and unexpected changes. the currency risk exposure coefficients resulting from an empirical analysis of shanghai stock exchange a share listed companies...