We propose an aggregate planning model based on integer optimization that combines consumers' perception, market share, and cost-benefit analysis. This model provides a new direction to optimize the design of credit card services. The survey was administered online last summer in China and...

The Kyoto Protocol to the United Nations Framework Convention on Climate Change (UNFCCC) has set legally binding emissions targets for a basket of six greenhouse gases and timetables for industrialised countries. It has also incorporated three international flexibility mechanisms. However, the...