In clinical practice, the profile of each subject's CD4 response from a longitudinal study may follow a 'broken stick' like trajectory, indicating multiple phases of increase and/or decline in response. Such multiple phases (changepoints) may be important indicators to help quantify treatment...

Purpose: Low-carbon economy requires the pursuit of eco-efficiency, which is a win-win situation between economic and environmental efficiency. In this paper the question of trading off the economic and environmental effects embodied in eco-efficiency in the hybrid manufacturing/remanufacturing...

Purpose – This study aims to propose the idea of which macro-factors and how the macro-factors impact on the gold price. Design/methodology/approach – An EGARCH model is applied to test the volatility of gold price. A VAR method is applied to validate the idea by decomposing gold's value...