Revision of knowledge bases (KBs) expressed in description logics (DLs) has gained a lot of attention lately. Existing revision algorithms can be divided into two groups: model-based approaches (MBAs) and formula-based approaches (FBAs). MBAs are fine-grained and independent of the syntactical forms of KBs; however, they only work for some restricted forms of the DL-Lite family. FBAs can deal w...

The number and total mass of high value near-Earth asteroids (NEOs) are limited. If space exploration mining becomes profitable then at some point it will benefit from moving on to the far greater resources Main Belt Asteroids (MBAs). Most MBAs energetically too hard reach with present technology low Earth orbit. An alternative is use Mars orbit as a base which conduct MBA research, prospecting...

This study aims to determine the levels of methylene blue active substances (MBAS) and ethyl violet active substances (EVAS) as anionic surfactants and of disulphine blue active substances (DBAS) as cationic surfactants in the surface microlayer (SML) around an estuarine area using colorimetric methods. The results show that the concentrations of surfactants around the estuarine area were domin...

While a substantial literature has established returns to college major and to school quality, we offer the first such estimates for Master’s of Business Administration (MBAs). To control for their nonrandom selection of fields, we estimate the returns to MBA concentrations using both ordinary least squares (OLS) with detailed control variables and including individual fixed effects. We find ap...

A novel spirobifluorene-bridged allylsilane precursor, which can be easily purified by silica gel chromatography, was prepared by using a new molecular building block for allylsilane sol-gel precursors (MBAS) and successfully converted into a highly fluorescent periodic mesoporous organosilica film.