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Model reference pi controller tuning for second order inverse response and dead time processesand science
(2016-09-06)
In this paper, a One-Degree-of-Freedom PI controller is optimized using the model reference tuning approach for a Second Order Inverse Response and Dead Time Process operating as a servo control. In addition, a graphic ...
Modelling Diffusion Effects in Fertility Transition
(1993)
Mathematical models bind theory to precise formulations, and by doing so accentuate logical inconsistences in theories and facilitate their testing. In this article we explore the implications of simple mathematical models ...
A biocomputational platform for the automated construction of large-scale mathematical models of miRNA-transcription factor networks for studies on gene dosage compensation
(2016-11-09)
Cancer complexity and resistance is mediated by
cell-to-cell heterogeneity, which is the consequence of the
enormous instability of its genetic material. It is unknown how
cancer cells are able to withstand the effects ...
Comparative analysis of dengue versus chikungunya outbreaks in Costa Rica
(2018-06)
For decades, dengue virus has been a cause of major public health concern in Costa Rica, due to its landscape and climatic conditions that favor the circumstances in which the vector, Aedes aegypti, thrives. The emergence ...
Propuesta de un curso teórico – práctico para la formación inicial de profesores de matemáticas: posible entorno de aprendizaje
(2016-06)
En este artículo se describe la propuesta de un curso teórico-práctico como un entorno de
aprendizaje para la formación inicial de profesores de matemática para educación secundaria.
Este curso se implementó en el 2015 ...
High levels of somatic DNA diversity at the myotonic dystrophy type 1 locus are driven by ultra-frequent expansion and contraction mutations
(Human Molecular Genetics, 2012, Vol. 21, No. 11 2450–2463, 2012-02-24)
Several human genetic diseases are associated with inheriting an abnormally large unstable DNA simple sequence
repeat. These sequences mutate, by changing the number of repeats, many times during the lifetime
of those ...
Roasting, grinding, and storage impact onthermodynamic properties and adsorptionisotherms of arabica coffee
(2017-04)
This work aimed to evaluate alterations on the water sorption of coffee due toroast, grind, and storage. Crude grain coffee (Coffea arabica) was roasted at twolevels: medium light and moderately dark. Grain was grinded in ...
Analyzing the Measurement Equivalence of a Translated Test in a Statewide Assessment Program
(2016-09)
When tests are translated into one or more languages, the question of the equivalence of
items across language forms arises. This equivalence can be assessed at the scale level by means of
a multiple group confirmatory ...
Diseño y caracterización de un enfriador de átomos de tipo “desacelerador Zeeman”
(2016)
Nosotros presentamos un método que utiliza simultáneamente dos modelos matemáticos, con el objetivo de optimizar el diseño de un desacelerador Zeeman, con miras a la implementación de átomos ultrafríos a la física del ...