Vol. 35 No. 1 (2021): Uniciencia. January-June, 2021

Published: 2021-01-31

Editorial (Not evaluated by peers)

  • Uniciencia journal adopts the continuous publication model

    Yuri Morales-López (Author)
    I-II
    DOI: https://doi.org/10.15359/ru.35-1.0

Original scientific papers (evaluated by academic peers)

  • Errors in understanding the meaning of letters in algebraic assignments by university students

    Helen Bolaños-González, José Luis Lupiáñez-Gómez (Author)
    1-18
    DOI: https://doi.org/10.15359/ru.35-1.1

  • College student dropout: cohort study about possible causes

    Magaly Rodríguez-Pineda, José Andrey Zamora-Araya (Author)
    19-37
    DOI: https://doi.org/10.15359/ru.35-1.2

  • Assessment and redesign of a unit on proportionality using the Didactical Suitability tool

    Daniel Esqué de los ojos, Adriana Breda (Author)
    38-54
    DOI: https://doi.org/10.15359/ru.35-1.3

  • Active method in the development of mathematical competences in Awajún children, Perú

    Abdías Chávez-Epiquén, Ketty Marilú Moscoso-Paucarchuco, Juan Raúl Cadillo-León (Author)
    55-70
    DOI: https://doi.org/10.15359/ru.35-1.4

  • Approaching to water quality modeling processes in a subwatershed. The Virilla River case in Costa Rica

    Rolando Sánchez-Gutiérrez, Cinthya Gómez-Castro (Author)
    71-89
    DOI: https://doi.org/10.15359/ru.35-1.5

  • Knowledge of prospective mathematics teachers on notable products

    Judith Graciano-Barragan, Lilia P. Aké (Author)
    90-107
    DOI: https://doi.org/10.15359/ru.35-1.6

  • Analysis of statistical variability activities in secondary education textbooks: a study from an international proposal standpoint

    Francisco Rodríguez-Alveal, Danilo Díaz-Levicoy, Claudia Vásquez (Author)
    108-123
    DOI: https://doi.org/10.15359/ru.35-1.7

  • Mathematical knowledge of elementary education student teachers: variable analysis

    Jaime Segarra, Carmen Julià (Author)
    124-138
    DOI: https://doi.org/10.15359/ru.35-1.8

  • Use of frequency tables by prospective teachers to conduct project work

    José António Fernandes, Gabriela Gonçalves, Paula Maria Barros (Author)
    139-151
    DOI: https://doi.org/10.15359/ru.35-1.9

  • Structural sense of first-year university students

    Marianella Bolaños-Barquero, Isidoro Segovia Álex (Author)
    152-168
    DOI: https://doi.org/10.15359/ru.35-1.10

  • Key international references for the redesign of a curriculum: competences for a Computer Science program

    Gabriela Garita-González, Johnny Villalobos-Murillo, Carmen Cordero-Esquivel, Sandra Cabrera-Alzate (Author)
    169-189
    DOI: https://doi.org/10.15359/ru.35-1.11

  • Teachers' mathematical knowledge of parabolas: Designing an instrument for research

    Elizabeth Advíncula Clemente, Marisel Beteta Salas, José Carlos León Ríos, Isabel Torres Céspedes, Miguel Montes (Author)
    190-209
    DOI: https://doi.org/10.15359/ru.35-1.12

  • Onychophorology, the study of velvet worms, historical trends, landmarks, and researchers from 1826 to 2020 (a literature review)

    Julián Monge-Nájera (Author)
    210-230
    DOI: https://doi.org/10.15359/ru.35-1.13

  • Fuzzy representation of rainfall threshold in triggering mass removal processes

    José González-Campos, Carlos Romero-González, Cristian Carvajal-Muquillaza (Author)
    231-244
    DOI: https://doi.org/10.15359/ru.35-1.14

  • Experiences of Mexican teenage students when choosing a math degree: A mathematical narrative identity study

    Gustavo Martínez-Sierra, Jonathan Cervantes-Barraza, Lorena Jiménez-Sandoval (Author)
    245-264
    DOI: https://doi.org/10.15359/ru.35-1.15

  • Factors affecting the academic performance of freshmen in the ITCR general mathematics course

    Érick Chacón-Vargas, Gabriela Roldán-Villalobos (Author)
    265-283
    DOI: https://doi.org/10.15359/ru.35-1.16

  • In the opinion of scientists: are there rules in research? Pilot study on the most widespread rules of scientific research

    Paula de la Lama-Zubirán, Alfredo de la Lama-García, Marcelo del Castillo-Mussot (Author)
    284-298
    DOI: https://doi.org/10.15359/ru.35-1.17

  • Myxomycetes within ecotones in temperate and tropical forests

    Carlos Rojas-Alvarado, Randall Valverde-González, Stephanie Somerville, Adam W. Rollins, Steven L. Stephenson (Author)
    299-311
    DOI: https://doi.org/10.15359/ru.35-1.18

  • Effect of non-surgical therapy on periodontal clinical parameters in patients using cannabis

    Natalia Gómez-Osorio, Paula A. González-Jiménez, Adrián Moreno-Gutiérrez, Danny Santana-Bedoya, Jhojan Alzate-Montoya (Author)
    312-319
    DOI: https://doi.org/10.15359/ru.35-1.19

  • Fluorescence, reflectance, and physiological response to water stress in Gmelina arborea Roxb seedlings

    Juan Carlos Valverde, Dagoberto Arias-Aguilar, Ernesto Montero-Zeledón, Dionisio Gutierrez-Fallas (Author)
    320-334
    DOI: https://doi.org/10.15359/ru.35-1.20

  • Carbon dioxide photoreduction using TiO2 sensitized with Co and Cu trimers in aqueous media

    Carlos E. Rojas-Sánchez, Jimena Incer-Valverde, Leslie W. Pineda, J. Esteban Durán-Herrera (Author)
    335-351
    DOI: https://doi.org/10.15359/ru.35-1.21

  • Estimación de parámetros genéticos de Gmelina arborea Roxb. (melina) en el Caribe de Costa Rica

    William Hernández-Castro, Yorleny Badilla Valverde, Olman Murillo-Gamboa (Author)
    352-366
    DOI: https://doi.org/10.15359/ru.35-1.22

  • Environmental impact assessment of a graphic company that uses offset lithographic printing

    Wendy Villalobos-González, José Pablo Sibaja-Brenes, José Carlos Mora-Barrantes, Benjamín Álvarez-Garay (Author)
    367-383
    DOI: https://doi.org/10.15359/ru.35-1.23

  • Attitude towards mathematics from parents of secondary students

    Luis Gerardo Meza-Cascante, Zuleyka Suárez-Valdés-Ayala, Evelyn Agüero-Calvo, Martha Calderón-Ferrey, Rodolfo Jiménez-Céspedes, Laura Sancho-Martínez, Patricia Pérez-Tyteca, Javier Monje-Parrilla (Author)
    384-395
    DOI: https://doi.org/10.15359/ru.35-1.24