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Construction of perfect space-time codes
(2013-04-29)
In this work, we propose an innovative methodology to extend the construction of minimum and non-minimum delay perfect codes as a subset of cyclic division algebras over ℚ(ζ3), where the signal constellations are isomorphic ...
Valuing time with a joint mode choice-activity model
(FABRIZIO SERRA EDITORE, 2006)
Activity and travel models share a common framework that cans for their joint estimation. This complex problem only recently has received attention in the literature. Explicit equations for travel choice and activity ...
Time in work-life conflict: The case of academic women in managerial universities
(Pontificia Universidad Católica de Valparaíso, 2020-11)
Permanent measurement of performance, competitive funding and the search for efficiency and
acceleration of scientific productivity. Although probity and meritocratic systems at the base of the new
academic management ...
Tempos cotidianos de professoras/es fora da escola: outras histórias
(Universidade Federal de Minas GeraisUFMG, 2014-07-29)
This work analyses the configurations of basic education schools teachers and their time out-side school, taking into account aspects from the socio-historical processes that constitute them. The research has as its ...
O professor de educação física enquanto mediador na construção de um tempo livre dotado de sentido concreto
(Universidade Federal de Santa MariaBrasilUFSMCentro de Educação Física e Desportos, 2005-05-19)
The objective of this study is to understand, through the differentiation
between "abstract" and "concrete" work, the Physical Education Teacher's role as a
mediator in the construction of a free time endowed with concrete ...
Challenges to realize the gender dividend: Analysis of the time use patterns in Costa Rica
(2015)
The gender dividend is considered a potential opportunity for economic growth that comes from an increase in women’s labor force participation. Previous studies conclude that if nonmarket production is included; the gender ...
Silica coating on alumina ceramic: comparison of three chairside air-abrasion devices working for different times and distances.
(2011-03-01)
This study evaluated, by scanning electron microscope (SEM) and EDS, the effect of different strategies for silica coating (sandblasters, time and distance) of a glass-infiltrated ceramic (In-Ceram Alumina). Forty-one ...
Silica coating on alumina ceramic: comparison of three chairside air-abrasion devices working for different times and distances.
(2011-03-01)
This study evaluated, by scanning electron microscope (SEM) and EDS, the effect of different strategies for silica coating (sandblasters, time and distance) of a glass-infiltrated ceramic (In-Ceram Alumina). Forty-one ...