Practical English Swan

Practical English Usage has sold over 2 million copies worldwide. Now revised and updated for the fourth edition, it answers the questions that teachers and learners ask about English grammar and vocabulary with clear, corpus-informed explanations and examples.

An incisive framework for companies seeking to increase their resilience

Alexander Armstrong returns to narration in three popular classical works for children. Peter and the Wolf, Op. 67 (1936) is a 'symphonic fairy tale for children' by Sergei Prokofiev.

Risk control, capital allocation, and realistic derivative pricing and hedging are critical concerns for major financial institutions and individual traders alike. Events from the collapse of Lehman Brothers to the Greek sovereign debt crisis demonstrate the urgent and abiding need for statistical tools adequate to measure and anticipate the amplitude of potential swings in the financial markets—from ordinary stock price and interest rate moves, to defaults, to those increasingly frequent "rare events" fashionably called black swan events. Yet many on Wall Street continue to rely on standard models based on artificially simplified assumptions that can lead to systematic (and sometimes catastrophic) underestimation of real risks.