To obtain the cathode microporous layer (CML) with high mass transfer performance and high electronic conductivity, a pore-forming technology was introduced to optimize CML microstructure for direct methanol fuel cells. In this paper, the effects of carbon material type, carbon material loading...

This paper makes a brief description of the definition and methods of data mining. It describes the characteristics of agricultural data (value delivery, specialization, spatio-temporal bidimensionality) and the status of application of data mining technology in agriculture.

The daily returns on leveraged and inverse-leveraged exchange-traded funds (LETFs) are a multiple of the daily returns of a reference index. Because LETFs rebalance their leverage daily, their holding period returns can deviate substantially from the returns of a leveraged investment. While...