This paper presents a new optimal method for model estimation of the unknown parameters of circuit-based proton exchange membrane fuel cells (PEMFCs). The main idea is to minimize the sum of squared error (SSE) value between the actual data and the estimated results. The optimization process...

Economic analysis of the tourism industry is a critical tool for local industries and governments to estimate, understand, and forecast the tourism potential and economic performance of a destination, especially amidst a crisis such as the COVID-19 pandemic. In this study, we take Macao as a...

Tourism is acknowledged as a contributor to destination economies in many countries. However, COVID-19 has devastated the tourism industry in numerous national economies. Although the economic impact of tourism on destinations has been examined in a large body of tourism literature, most studies...