The user view of file management

Abstract

The structures in which users store their files facilitate retrieval by enabling users to deduce a file's contents from its place in the organization. This study examined structures created by UNIX users to organize their files within a hierarchical directory scheme, and examined the relation between structure and command usage. Users' difficulties in managing the complexity of a hierarchical structure limited the amount of information about files that these structures contained. Tree complexity increased in a negatively accelerating function with the number of files. Users who grouped their files into few directories arranged in shallow trees could navigate through the tree easily, but they sacrificed information: directory names were less specific, and users made more command errors. More sophisticated users created deeper trees. They were able to manage more files but also made extensive use of navigation aids.

Colorimetric characteristics of the phenolic fractions obtained from Tempranillo and Graciano wines through the use of different instrumental techniques

“…In red wines, colour represents the first sensory characteristic perceived by the taster, providing not only information about defects, type or the evolution of the wine, but also greatly influence on its acceptability [2] and price [3]. So, strong correlations have been found between the colour and overall quality of wines [4,5].…”