Browsing Facultad de Ciencias Exactas y Naturales by Title
Now showing items 1-20 of 363
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32. Catalogo 2.0. de recursos para la alfabetización en competencias digitales del profesorado de la Escuela de Bibliotecología y Ciencias de la Información
(2016)Proyecto de investigación cuyo fin es desarrollar un catálogo 2.0 de recursos para la alfabetización digital en competencias digitales del profesorado de la Escuela de Bibliotecología y Ciencias de la Información (EBCI). ... -
33. Comunidades de aprendientes en entornos virtuales: una alternativa de educación sin distancias en el marco del Paradigma Emergente
(2016)La presente investigación cumple con el objetivo de exponer una alternativa de construcción de entornos virtuales de aprendizaje (EVA) bajo los lineamientos del Paradigma Emergente. A partir de un proceso de investigación ... -
A checklist of the amphibians and reptiles of Río Macho Biological Station, Provincia de Cartago, Costa Rica
(Check List vo.11 no.6 article 1784 1-10 2015, 2015-11-02)We provide a checklist of the amphibians and reptiles of Río Macho Biological Station (RMBS), Costa Rica. During a period of a year (2012–2013) we conducted visual and acoustic surveys in a natural mature forest plot (>50 ... -
A Collaborative Effort Between Caribbean States for Tsunami Numerical Modeling: Case Study CaribeWave15
(Pure and Applied Geophysics vol.175 no.2 1405-1428 2017, 2017)Historical records have shown that tsunami have affected the Caribbean region in the past. However infrequent, recent studies have demonstrated that they pose a latent hazard for countries within this basin. The Hazard ... -
A combined experimental and theoretical study of gas sorption on nanoporous silver triazolato metal-organic frameworks
(2014-01-01)A new silver-triazolate metal-organic framework (MOF), {Ag 3[Ag5(μ3-3,5-tBu 2tz)6](BF4)2}n (2), has been prepared and structurally characterized. The CO2 sorption properties of this new MOF and previously reported isostructural ... -
A combined first-principles computational/experimental study on LiNi 0.66Co 0.17Mn 0.17O 2 as a potential layered cathode material
(Elsevier, 2012-08-01)First-principles calculations are used to analyze the phase stability, formation energy, and Li intercalation potential for a series of layered cathode materials. The calculations show LiNi 0.66Co 0.17Mn 0.17O 2 as a ... -
A dynamic simulation model for the blooming of Oscillatoria agardhii in a monomictic lake
(Elsevier, 1995-01-15)The occurrence of phytoplankton blooms is a common problem in water bodies. The quantitative description of the algal population growth is of primary importance to understand the mechanisms which lead to these phytoplankton ... -
A language and a physical organization technique for summary tables
(ACM SIGMOD Record, 1985-05-01)A summary table IS a tabular representation of summary data, and is a useful data structure for statistical databases Priventive summary tables are basic building blocks of summmy tables, and can be represented as relations ... -
A mixed virtual element method for the Brinkman problem
(Mathematical Models and Methods in Applied Sciences vol.27 no.4 707-743 2017, 2017)In this paper, we introduce and analyze a mixed virtual element method (mixed-VEM) for the two-dimensional Brinkman model of porous media flow with non-homogeneous Dirichlet boundary conditions. More precisely, we employ ... -
A priori and a posteriori error analyses of a pseudostress-based mixed formulation for linear elasticity
(Computers and Mathematics with Applications vol.71 no.2 585-614 2016, 2016-01-02)In this paper we present the a priori and a posteriori error analyses of a non-standard mixed finite element method for the linear elasticity problem with non-homogeneous Dirichlet boundary conditions. More precisely, the ... -
A proposal for implementing PBL in programming courses
(XL Latin American Computing Conference, CLEI 2014, 2014)In the search of teaching strategies more consistent with the current needs of the industry and with the new university pedagogical model, an action research project was carried in the programming courses of the study ... -
A simple method for short-term storage and transportation of spermatophores of Pacific white shrimp (Litopenaeus vannamei)
(Hidrobiológica vol.26 no.1 9-14 2016, 2016)The development of a shipping method for spermatophores of the white shrimp Litopenaeus vannamei would open new opportunities for sharing and improving genetic resources of shrimp worldwide. Seventy spermatophores were ... -
Abelian covers of alternating groups
(Archiv der Mathematik 107 135-150, 2016-07-07)Let G = A n , a finite alternating group. We study the commuting graph of G and establish, for all possible values of n barring 13, 14, 17, and 19 whether or not the independence number is equal to the clique-covering number. -
Amenaza de contaminación del agua subterránea en el sector norte del acuífero Barva, Heredia, Costa Rica
(2014-11)Most of the water for human consumption and the development of economic activities in the Central Valley of Costa Rica is supplied by the aquifers located in this region. Nevertheless, many of these activities are located ... -
An anatomical comparison between bunch and fruit of oil palm with pineapple leaf and three woods from plantations in Costa Rica
(Journal of Oil Palm Research, 2013-04)Elaeis guineensis, Ananas comusus and forest plantations are planted widely in Costa Rica; however their residues (8000 t) are not utilised. The main objective of this work was to undertake an anatomical description of the ... -
Analysis of energy transfer and ternary non-covalent filler/matrix/UV stabilizer interactions in carbon nanofiber and oxidized carbon nanofiber filled poly(methyl methacrylate) composites
(Elsevier, 2011-10-27)Ternary non-covalent interactions between carbon nanofibers (CNFs), oxidized carbon nanofibers (ox- CNFs), poly(methyl methacrylate) (PMMA) chains, and benzotriazole-containing UV stabilizers were analyzed using ... -
Analysis of the HDG method for the stokes–darcy coupling
(Numerical Methods for Partial Differential Equations, 2017-02-03)In this article, we introduce and analyze a hybridizable discontinuous Galerkin (HDG) method for numerically solving the coupling of fluid flow with porous media flow. Flows are governed by the Stokes and Darcy equations, ...
