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Université de Fribourg

Hoops and Coming of Age in Greek and Roman Antiquity

Dasen, Véronique

In: Toys and Material Culture. Hybridisation, Design and Consumption. 8th International Toy Research Association World Conference, 2019, p. 1-21

Ancient hoops, usually made of wood or metal, do not survive archaeologically, but literary and iconographic representations provide information regarding the materials used, ergonomics, as well as their symbolic and cultural values. Hoops were intimately associated with youth, especially male, and this paper aims at expanding the understanding of their collective, social and religious dimensions...

Université de Fribourg

Trading model with pair pattern strategies

Ren, F. ; Zhang, Yi-Cheng

In: Physica A: Statistical Mechanics and its Applications, 2008, vol. 387, no. 22, p. 5523-5534

A simple trading model based on pair pattern strategy space with holding periods is proposed. Power-law behavior is observed for the return variance σ², the price impact H and the predictability K for both models, with linear and square root impact functions. The sum of the traders’ wealth displays a positive value for the model with a square root price impact function,...