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Improved PID controller tuning rules for performance degradation/robustness increase trade-off
(2016-09)
Definitely, robustness is an important feature that any control system must take into account, especially considering that the design is usually based on low-order linear models that represent the whole controlled process. ...
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 ...
In vivo and in vitro genetic evidence of involvement of neuregulin 1 in immune system dysregulation
(J Mol Med (Berl). 2010 November ; 88(11): 1133–1141, 2010-11)
Neuregulin 1 (NRG1) has been implicated in several disorders including breast cancer, multiple sclerosis, and schizophrenia. Also, recent evidence suggests that NRG1 may play a role in regulation of inflammation and immune ...
Visualizing IT budget to improve stakeholder communication in the decision making process
(2016)
Traditionally in large enterprises, budget cuts are a treat for IT departments. One way to guard IT budget is visualizing the impacts in IT services of such cuts. Data visualization tools are capable of bridging the gap ...
Utilización del nematodo entomopatógeno Heterorhabditis atacamensis CIA-NE07 en el control del picudo del banano cosmopolites sordidus en condiciones in vitro
(2015)
Entre las especies de barrenadores del banano, el picudo negro (Cosmopolites sordidus) es la plaga de mayor importancia económica en Costa Rica y a nivel mundial. El control de C. sordidus en sistemas intensivos de producción ...
Metabolic control in a nationally representative diabetic elderly sample in Costa Rica: patients at community health centers vs. patients at other health care settings
(. BMC Int Health Hum Rights 8 (5) p. 1-13, 2008-05-14)
Background: Costa Rica, like other developing countries, is experiencing an increasing burden of
chronic conditions such as diabetes mellitus (DM), especially among its elderly population. This
article has two goals: (I) ...
Design of an optimized biomixture for the degradation of carbofuran based on pesticide removal and toxicity reduction of the matrix
(2015-12)
Pesticide biopurification systems contain a biologically active matrix (biomixture) responsible for the accelerated elimination of pesticides in wastewaters derived from pest control in crop fields. Biomixtures have been ...
Temporal variations in fumarole gas chemistry at Poás volcano, Costa Rica
(2015-03)
We report the chemical and isotopic composition of fumarole gas discharges collected at Poás Volcano, Costa Rica from 2001 to 2014, covering a period during which the volcano experienced a series of phreatic eruptions ...
Las malformaciones congénitas en Costa Rica. II (Estudio retrospectivo hospitalario de caso-control)
(1985)
Se realizó un estudio retrospectivo de caso-control de malformaciones congénitas en Costa Rica, utilizando expedientes clínicos de los Hospitales Nacional de Niños Carlos Sáenz Herrera y la Maternidad Carit, entre 1970 y ...
Calidad del control glicémico según la hemoglobina glicosilada vs la glicemia en ayunas: Análisis en una población urbana y otra rural de diabéticos costarricenses
(Acta Médica Costarricense 46(3):139-144, 2004-07)
La hemoglobina glicosilada (HbAlc) es actualmente la mejor prueba disponible que refleja el control
glicemico del paciente diabetico, Pero su uso y disponibilidad no estan ordenados en el sistema nacional
de salud de ...