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Sexual size dimorphism and ecomorphology of the Berthold’s bush anole (Polychrus gutturosus) in Costa Rica: Preliminary data
(2019)
Sexual size dimorphism (SSD) is the result of sexual or natural selection operating differently on the body
sizes of females and males. Males of most lizard species are larger than females, suggesting intrasexual selection
on ...
Contrasting Thermal Strategies of Montane Neotropical Bats at High Elevations
(2018)
In the Neotropics, captive vespertilionid bats substantially reduce their metabolic rate at low ambient temperatures, similar to their temperate counterparts, whereas the ability of phyllostomids to lower metabolic rate ...
Geometría: II y III ciclo Educación General Básica
(Universidad de Costa Rica, Sede de Occidente. San Ramón, Alajuela, C.R., 1993-09)
Esta es una guía para la enseñanza de temas de geometría elemental, considerados principalmente en los programas del II y III ciclo de Educación General Básica. Se incluyen fichas de laboratorio dirigidas a los educandos, ...
Plan de manejo y desarrollo de la Reserva Biológica Alberto Ml. Brenes: versión para discusión
(2014-01-21)
Expone un plan de manejo y desarrollo para la Reserva Biológia Alberto Manuel Brenes, la cual es administrada por la Universidad de Costa Rica. Es un instrumento de planificación orientador de todas las acciones que deben ...
New mixed finite element methods for natural convection with phase-change in porous media
(2019)
This article is concerned with the mathematical and numerical analysis of a steady phase change problem for non-isothermal incompressible viscous flow. The system is formulated in terms of pseudostress, strain rate and ...
Hemidactylus frenatus (Common House Gecko). Diet
(2017)
Hemidactylus frenatus is an invasive species in the Americas that has succeeded in establishing populations in Costa Rica (Savage 2002. The Amphibians and Reptiles of Costa Rica: A Herpetofauna between Two Continents, ...
Twofold Saddle-Point Formulation of Biot Poroelasticity with Stress-Dependent Diffusion
(2023)
We present a new stress/total-pressure formulation for poroelasticity that incorporates the coupling with steady nonlinear diffusion modified by stress. This nonlinear problem is written in mixed-primal form, which combines ...
A posteriori error analysis for a viscous flow-transport problem
(2016)
In this paper we develop an a posteriori error analysis for an augmented mixed-primal finite element approximation of a stationary viscous flow and transport problem. The governing system corresponds to a scalar, nonlinear ...
Ecología del Homo sapiens y su relación sociocultural
(2017)
Muchos individuos de la especie Homo sapiens consideran estar separada del resto de criaturas del Reino Animal. Esto implica que hay un desligamiento de las relaciones entre el ser humano y el entorno natural, cuyas causas ...
Geographic variation in aggressive signalling behaviour of the Jacky dragon
(2015)
Signal diversification is often the product of sexual and/or natural selection and may be accompanied by genetic differentiation or simply reflect a plastic response to social and environmental variables.We use an agamid ...