Search Results

1321

Portal de Revistas UNA

artículo original

Software Cost Estimation: A Pedagogical Proposal to Teach COCOMO

by Garita-González, Gabriela, Lizano-Madriz, Fulvio

Published 2018

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1322

Portal de Revistas UNA

artículo original

Risk assessment and public policy in the canton of Desamparados, Costa Rica

by Quesada-Román, Adolfo, Calderón-Ramírez, Guillermo

Published 2018

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1323

Portal de Revistas UNA

artículo original

Concordance between introductory university mathematics courses and the program of pre-university studies: A view from the perspectives of content and academic performance

by Castillo-Sánchez, Mario, Gamboa-Araya, Ronny, Hidalgo-Mora, Randall

Published 2018

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1324

Portal de Revistas UNA

artículo original

Problem solving in the teaching of single variable differential and integral calculus: Perspective of mathematics teachers

by Alfaro-Carvajal, Cristian, Fonseca-Castro, Jennifer

Published 2018

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1325

Portal de Revistas UNA

artículo original

Quantification and classification of solid-ordinary waste of Universidad Nacional de Costa Rica into the landfills

by Rojas-Vargas, Julián, Bogantes, Joseline

Published 2018

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1326

Portal de Revistas UNA

artículo original

Image and dosimetry quality control for digital mammography by using the Normi Mam Digital phantom

by Calderón-Mata, Angélica, Arce-Corrales, Luis, Mejías-Gamboa, Ricardo

Published 2018

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1327

Portal de Revistas UNA

artículo original

by Castillo-Chinchilla, Maikol, Piedra-Castro, Lilliana, Sandoval-Hernández, Iván, Carvajal-Sánchez, José Pablo

Published 2018

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1328

Portal de Revistas UNA

artículo original

Population parameters and feeding habits of spotted rose snapper (Lutjanus guttatus) in the Paquera-Tambor Marine Area for Responsible Fishing of the Gulf of Nicoya, Costa Rica

by Soto-Rojas, Rosa Lidia, Hernández-Noguera, Luis Adrián, Vega-Alpízar, Jose Luis

Published 2018

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1329

Portal de Revistas UNA

artículo original

Factors associated with dropping out of the program for Bachelor’s and Licentiate’s Degrees in Mathematics Teaching at the Universidad Nacional de Costa Rica (UNA): Evidence from t...

by Zamora-Araya, José Andrey, Villalobos-Madrigal, Francisco José

Published 2018

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1330

Portal de Revistas UNA

artículo original

Abundance, biomass and distribution of demersal fish of the Caribbean Sea of Central América

by Benavides-Morera, Rosario, Campos-Calderón, Fernando

Published 2019

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1331

Portal de Revistas UNA

artículo original

Integral management of residual vegetable cooking oil from restaurants on the Omar Dengo Campus of the Universidad Nacional, Costa Rica

by López-Cruz, Kevin, Rojas-Vargas, Julián, Bogantes-Sánchez, Joseline

Published 2019

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1332

Portal de Revistas UNA

artículo original

Topographical measurements on atomically flat surfaces at room conditions through scanning tunneling microscope, a didactic insight

by Delgado-Jiménez, Lilliana, Chacón-Vargas, Sofía, Sabater-Piqueres, Carlos, Sáenz-Arce, Giovanni

Published 2019

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1333

Portal de Revistas UNA

artículo original

Spectral and chromatic analysis of automotive acrylic lacquers for white paint touch up using Unsupervised Pattern Recognition

by Amador-Hernández, Judith, Velázquez-Manzanares, Miguel, Colunga-Urbina, Edith Madaí, Margarita de la Garza-Rodríguez, Iliana, Sánchez-Hernández, Diana Celene

Published 2019

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1334

Portal de Revistas UNA

artículo original

Bioprospecting study, antibiotic and antioxidant activity of the santol’s fruit (Sandoricum koetjape)

by Mesén-Mora, Luis Diego, Carvajal-Miranda, Yendry, Álvarez-Valverde, Victor, Rodríguez-Rodríguez, Gerardo

Published 2019

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1335

Portal de Revistas UNA

artículo original

Computational aspects of the finite difference method for the time-dependent heat equation

by Sequeira-Chavarría, Filánder, Ramírez-Bogantes, Melvin

Published 2019

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1336

Portal de Revistas UNA

artículo original

Towards an Integrated Approach of Conducting Fungal Research in Costa Rica

by Rojas-Alvarado, Carlos, Valverde-González, Randall

Published 2019

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1337

Portal de Revistas UNA

artículo original

Design of a monitoring network as a participative management tool: physical and chemical quality of groundwater in three sub-basins in the Central Valley of Costa Rica

by Madrigal-Solís, Helga, Fonseca-Sánchez, Alicia, Calderón-Sánchez, Hazel, Gómez-Cruz, Alicia, Núñez-Solís, Christian

Published 2019

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1338

Portal de Revistas UNA

artículo original

Effect of two cytokinins and a growth inhibitor on the in vitro tuberization of two genotypes of Solanum tuberosum L. cvs. Atlantic and Alpha

by García-García, José Antonio, Azofeifa-Bolaños, José Bernal, Solano-Campos, Frank, Orozco-Rodríguez, Rafael

Published 2019

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1339

Portal de Revistas UNA

artículo original

Validation of a liquid chromatography detection method (HPLC-DAD) for the determination of aloin in Aloe vera food products

by Ulate-Molina, Ricardo, Borbón-Alpízar, Henry, Sibaja-Brenes, José Pablo, Vega-Guzmán, Ilena, Arguedas-González, Maricruz

Published 2019

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

1340

Portal de Revistas UNA

artículo original

Evidence on some pedagogical and didactic trends present in the Costa Rican mathematics curriculum

by Zumbado-Castro, Marianela

Published 2019

Institution: Universidad Nacional de Costa Rica

Repositorio: Portal de Revistas UNA

Narrow Search