We extend the classical newsvendor problem by introducing a downside risk constraint from the perspective of inventory control. At the beginning of a replenishm
To improve trustworthiness in grid authentication,a novel trust enhanced grid authentication mechanism (TEGAM) is proposed in this paper where trust is divided
<正>This paper reports observations of passenger flow in the Wuchang railway station in Wuhan,China during the Chinese Traditional Spring Festival in 2006.The d
Growing numbers of users and many access policies that involve many different resource attributes in service-oriented environments cause various problems in pro