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Volume 24, No. 43Journal 43, January - December 2022

DOI:https://doi.org/10.15517/4d8d1t77

Published November 28, 2025

Scientific Papers

  1. Diana Sanabria Barboza, Henry Hernández (Author)

    Comparison in the application of classification methods to determine the mode of transportation of students to access the Rodrigo Facio campus of the Universidad Costa Rica in Montes de Oca, San Jose, Costa Rica

    This work presents the results of an exploratory process where different classification methods were applied to determine the mode of transportation for students to access the Rodrigo Facio campus of the University of Costa Rica. Among the analyzed models are binomial logistic regression, linear discriminant analysis, decision trees, K-closest neighbors, vector support machines and neural networks. A validation was carried out with the K-folds method and a precision higher than 83% was obtained for all the models analyzed. Similarly, the stacking assembly model was applied for the decision tree techniques, K-nearest neighbors, vector support machines, random forests, Bootstrap aggregation, binomial logistic regression, and the potentiation method, obtaining precision values higher than 86% in all cases. The random forest method gives the highest precision.

  2. Jorge Alberto Vásquez Rodríguez (Author)

    The deficit of formulation of the public policy of the national road infrastructure of 1998

    The reorientation of the public policy of the national road infrastructure of 1998 incorporated key aspects of the New National Style of Development in force in the country at the time of its officialization. Since the beginning of the 1980's, this style promulgates the leading role of the market, in deterioration of the role of the State, hence, in accordance with it, the construction, conservation and maintenance of the National Road Network of the State was transferred to the private entrepreneur, through contracts administrative tasks in charge of a public entity called the National Highway Council, where three members of the organized businessmen of the highway construction market would be incorporated into its administrative council, with voice and vote. They would co-manage the institution, with three other members representing the current government and one from the local governments, with resources from a National Road Fund.

    The formulation of the policy holds a deficit, generated mainly by the reformulation of the public problem and the intervention strategy of the public policy, generated from “the political” in the Legislative Assembly in the first quarter of 1998. Hence, a possible response was not provided to some of the causes of the public problem, such as the relocation of services, expropriations, coordination with public entities that determine the progress of road works, environmental protection, control and quality of highways, excessive control over road works, exercised directly or indirectly by controlling public entities, thus generating a formulation deficit in public policy, which negatively affects its results.

  3. Allan Gerardo Ureña Bermúdez, Jaime Allen (Author)

    Time-spatial analysis of the effect of the implementation of weighing stations on the esals for pavement design

    The truck factor is one of the main components in computing the load demand for highway pavements. The aim of this study is to analyse the databases on weighing carried out between 2008 and 2017. Therefore, more than 12 million heavy transport vehicles were counted, these vehicles were distributed in Limon and Cartago weighing stations. For each vehicle, the associated truck factor was calculated. Besides, according to the weight of each of its axles, it was determined if the vehicle did not comply with the provisions of the Legal Decree no 31363 of the MOPT. The econometric models are computed from the truck factor variables and non-compliance percentages. These models take the effect from different variables of the type of truck on the truck factor and non-compliance: spatial and temporal, and the type of measurement. The econometric models consider the following variables: year, month, type of vehicle, day, hour, and the type of measurement applied in the analysed stations. One of the results of this research is that there was an increase in the truck factors and non-compliance percentages analysed when going from a manual weighing system to an automated one.

  4. Yasniel Sánchez Suárez, Alina Karla Quesada Somano, Maylín Marqués León, José Armando Pancorbo Sandoval, Orlando Santos Pérez (Author)

    Functional analysis of the pedestrian infrastructure in the historical Center of Matanzas City, Cuba

    Urban mobility has undergone significant changes due to the new social distancing requirements in a COVID-19 scenario. The existence of the new tourism product requires, among other issues, that the urban infrastructure services, and especially regarding the pedestrian design of the historical centers, be modified and reorganized. The objective of this research is to redesign the service provided by the pedestrian infrastructure in Cuban tourist destinations, and especially in its historic centers. The methods used are preparation of the service triangle, assignment of responsibilities, calculation of the service cycle, analysis of organizational technical requirements and calculation of the level of service provided. Among the main results are the redesign of the service provided by the pedestrian infrastructure in Cuban historic centers, the characterization of the new service and the calculation of parameters for its management, the evaluation of parameters such as the service cycle, stability, reliability, and level of service provided. After carrying out an analysis of the service cycle, it is determined that the implementation of the service has a duration of 217 days, the stability is in acceptable values to solve its problems in a proliferative way (81,79%), the reliability of the service has been increasing with the application of the procedure. The calculated service level provided is 84,10% below the service level set in step three of the service cycle and is the starting point for the procedure feedback.

Literature Review

  1. Orlando Jefferson Adrianzen Flores, Jhon Jeiner Azula Vasquez, Cristian Fabian Pacherres Sánchez, Ernesto Dante Rodríguez Lafitte , Sócrates Pedro Muñoz Pérez (Author)

    Use of different types of fibers to improve the mechanical properties of asphalt: A literary review

    The demand for the use of flexible pavements is growing rapidly due to its good performance, but this is being affected considerably due to increased traffic and climatic variations, this brings with it the presence of considerable failures in the pavement, causing its performance to decrease and, therefore, its useful lifetime is shortened. This document aims to carry out a systematic review of the different types of fibers used in asphalt mixtures to improve their mechanical properties, in addition to studying the optimal percentages and lengths, the tests used, the performance of the mixtures according to the type of bitumen, the type of asphalt mix, and finally the profitability provided by the use of fibers in asphalt mixes is reviewed. Eighty-one articles published between 2014 and 2021 in the Scopus and Ebsco databases were reviewed. The reviewed papers had the same objective of studying the mechanical characteristics of asphalt mixtures using fibers. It was concluded that the fibers improve the properties of flexible pavements and, in addition, are profitably good despite having an increase in the initial cost, they demonstrate an increase in the life cycle, thus being economically feasible for road projects that are carried out with the use flexible pavements. It is also recommended to continue with studies aimed at using this type of asphalt mixture.

Technical papers

  1. Flor Lisbet Bustamante Salazar, Noé Humberto Marín Bardales, Julio César Benites Chero (Author)

    Use of Saccharum Officinarum vinasse for stabilization of cohesive soils

    This article shows the use of Saccharum officinarum stillage in stabilizing cohesive soils. These soils in mention are those that present very poor resistance properties, which prevents the soil from working properly as part of a subgrade on a road. The objective of the research was to determine the stabilization of cohesive soils with the incorporation of vinasse from Saccharum officinarum. The type of research is experimental, the technique used is observation and data collection sheet, through which it was possible to obtain values from the tests carried out in the laboratory with natural soil and soil stabilized with Saccharum officinarum vinasse. The results indicate that the soil under study is low plasticity inorganic silts and clays. With the application of s Saccharum officinarum vinasse, it was identified that the density of the soil increases with the different percentages used. Then, when carrying out the mechanical resistance tests of the stabilized soil, it was possible to increase the resistance with respect to that of the natural soil, being 25% of Saccharum officinarum vinasse the one that obtained the highest values. Research concludes that the incorporation of Saccharum officinarum stillage increases the strength properties of a cohesive soil.

  2. Leyner Oswaldo Calva Herrera, Sócrates Pedro Muñoz Pérez (Author)

    Stability and flow of hot asphalt mixes incorporating steel slags

    The present investigation was based on the innovation and elaboration of a hot asphalt mix (HMA) due to the premature deterioration of flexible pavements, and low capacity to fulfill its useful life. Then, it is recognized the need to ensure a good quality of materials for the asphalt mix and a search for a new material that can give greater durability and avoiding premature deterioration of the pavement. Thus, the incorporation of steel slag for the HMA design was evaluated with the objective to determine the stability and flow of the hot asphalt mixture incorporating steel slags. To achieve this, the Marshall methodology was developed with a percentage of steel slag with respect to the coarse aggregate in 0% - 15% - 25% - 50% - 75%. The results obtained, in terms of quality of the aggregates, complied with the standards of quality. It was concluded that the modified asphalt mixture with 15% steel slag is the best combination, in the same way this percentage complies for light-medium traffic, the remaining combinations (25% - 50% - 75%) only comply for light traffic. It was possible to increase the stability and flow of the incorporated asphalt mixture up to a maximum of 25% for a HMA with respect to the control mixture.

Case of Study

  1. Sleyther Arturo De La Cruz Vega, Cesar Eberth Ibañez Ccoapaz, Denis Yonatan Coaquira Cueva (Author)

    Determination of serviceability index and resistant capacity. Case study: pavements in Azangaro, Puno, Peru

    The following investigation aims to determine the serviceability and resistant capacity in a flexible pavement in Azángaro-Salinas km 0+000 to km 3+000, in Puno, Peru.

    From the results it was possible to determine that for the indicated section there is a PSI (Pavement Serviceability Index) of 3,41 according to the Merlin method, meaning that it has a good serviceability classification. Likewise, through the laboratory results, the resistant capacity is established for the subgrade, subbase, and base. After the most critical CBR was found for each of the layers of the pavement structure, and with the thicknesses found in the field, it is possible to carry out a structural design obtaining as a result that the design requirements were met. As conclusion, it was found a good serviceability of each section, since the determined IRI showed an average of 2,15. Likewise, the PSI total average of 3,41 corresponds to a good serviceability of the entire section studied.