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Advanced ceramics: Evaluation of the mechanism of stock removal and ground surface quality
(1999-12-01)
The aim of this work is to evaluate the mechanism of stock removal and the ground surface quality of advanced ceramics grounded by a plane tangential grinding process with diamond grinding wheels. The analysis of the ...
Representation in cognitive neuroscience
(Kluwer Academic/plenum Publ, 1999-01-01)
This article discusses the possible representational nature of two brain cognitive functions: perceptual and executive. Assuming the Newellian definition of representational processes as those that establish an isomorphic ...
Design of microirrigation systems in sloping lands using linear programming
(2000-12-01)
When the area to be irrigated has a high slope gradient in the manifold line direction, an option is to use a tapered pipeline to economize on pipe costs and to keep the pressure head variations within desired limits. The ...
A novel single-phase ZCS-PWM high power factor boost rectifier
(Institute of Electrical and Electronics Engineers (IEEE), 1997-01-01)
This paper presents a novel single-phase high power factor PWM boost rectifier, featuring soft commutation of the active switches at zero-current (ZCS). It incorporates the most desirable properties of the conventional PWM ...
Special subsets and optimum codes based on lattices and cosets
(1997-01-01)
This paper introduces the concept of special subsets when applied to generator matrices based on lattices and cosets as presented by Calder-bank and Sloane. By using the special subsets we propose a non exhaustive code ...
Crystallization process and chemical disorder in flash evaporated amorphous gallium antimonide films
(1994-01-01)
In this work we describe a flash evaporation system specially built to produce amorphous films of III-V compounds and characterize GaSb films using optical, electrical and X-Ray diffraction measurements. Changes in the ...
Towards a cooperative question-answering model
(1998-01-01)
A model of question-answering is proposed in this paper. In the model, the system tries, from an input query, to establish a controlled dialogue with its user. In the dialogue, the system tries to identify and to suggest ...
Blends of PVDF and a conducting polymer
(1994-01-01)
Blends of poly(vinylidene fluoride)-PVDF and-poly(o-methoxyaniline)-POMA-of various compositions were produced by casting in dimethylformamide (DMF). Flexible films were obtained which were characterized, using scanning ...
Study of the Q branch of 13CD3OH
(1991-01-01)
Some particularities of dam rehabilitation projects
(1999-12-01)
The number of dams, which need rehabilitation, is growing, not only in countries that have a long tradition in dam building and operation but also in those regions where the infrastructure is still in full development. ...