International scientific collaboration has been the dominant driving force for promoting scientific and technological advancement. However, current international scientific collaboration analysis and evaluation mainly concentrate on the exploration of international collaboration network; hence,...

Because implied volatility is essential for pricing options, analyzing derivative strategies and measuring risk in investment portfolios containing derivatives, understanding variations in implied volatility also becomes vital. Aside from a secular trend, volatility clustering and calendar...

To evaluate the volatile organic compounds (VOCs) pollution characteristics and identify their key sources in Fuzhou, China, which is one of the central cities in the economic zone on the west side of the Taiwan Straits, ambient air collection and measurement were conducted at nine sampling...