It is well known that the pro forma performance of a sample of investment funds contains biases. These biases are documented in Brown, Goetzmann, Ibbotson and Ross (1992) using mutual funds as subjects. The organization structure of hedge funds, being private and often offshore vehicles, makes data collection a much more onerous task. This amplifies the impact of performance measurement biases....

Anual, inicialmente, a revista passou a ser semestral a partir do volume 20 (2006), de forma que, a cada ano, se publicam dois números. Foi modificado o formato da Revista aumentando o seu tamanho, o que permitiu melhorar a qualidade das imagens, tão importante nas publicações dedicadas à arqueologia e ao patrimônio arqueológico, utilizando-se também a policromia. Essas melhorias técnicas deram...

this study investigated language learning styles of iranian efl learners and their class achievement. to this end, sixty female ad- vanced learners of instruction and different ages (15-30), studying at a language institute in shiraz were asked to take part in the study. a 30- item language learning styles questionnaire developed by reid (1987) was employed to elicit information for the study. ...

A class M of coarse spaces is called a variety if M is closed under formation of subspaces, coarse images and products. We classify the varieties of coarse spaces and, in particular, show that if a variety M contains an unbounded metric space then M is the variety of all coarse spaces.