The core of our paperwork consists in determining a classification of qualitative and quantitative causes that are influencing service companies’ performance and financial health based on grey systems theory and fuzzy sub-sets. The quantitative causes of firms’ performance are mainly...

The current economy is granting a widely interest to any activities involving knowledge. In the recent years, the number of the so-called knowledge-based organizations has reached a phenomenal rate of growth. Along with knowledge organizations, knowledge management started to play an important...

We analyze a generalized version of the Black-Scholes equation depending on a parameter $a\!\in \!(-\infty,0)$. It satisfies the martingale condition and coincides with the Black-Scholes equation in the limit case $a\nearrow 0$. We show that the generalized equation is exactly solvable in terms...