Anales de Ciencias Básicas, Físicas y Naturales

Tabu Search Algorithm: Case Study on Classroom Assignment at Universidad Metropolitana

Siro Tagliaferro — 2024-12-05

The Tabu Search algorithm makes it possible to carry out an optimization methodology whose differential characteristic is the use of adaptive memory and special problem-solving strategies, especially in the distribution of resources. In the Metropolitan University there have been various problems with the classroom assignment, due to student demand, which has been an erratic and difficult for predict behavior, which required the use of optimization tools or programs. For this, a mathematical model was made, where the strong restrictions were raised based on the characteristics of the Metropolitan University and the objective function was set up, to later use it in the tabu search algorithm to evaluate the solutions. After developing the model, the tabu search algorithm was developed, first the data of the academic offer and that of the classrooms provided by the university were processed and the initial solution of the problem was developed, which is used as a starting point. search game. Subsequently, the model was implemented in the algorithm, so that the tabu search seeks to reduce the number of sections where the assigned room does not have the required resources and optimizes the assigned spaces based on the number of students enrolled per section. Subsequently, a system was implemented to be able to visualize the obtained solution more easily and, finally, it was validated that the obtained solution complied with the characteristics of the classroom reform of the Metropolitan University in the 2022 academic period.

Conjoint choice analysis for the development of a functional beverage

Alicia Harrar de Dienes — 2024-12-05

This research proposes the development of a functional drink based fruit juices and milk whey applying the Conjoint Based Choice Analysis (CBC) method. An orthogonal design of 5 attributes with 2 levels each was created, which resulted in 8 mini-concepts. The CBC method was used to determine the utility function of each of the mini-concepts. The selected attributes and their levels were: type of drink (concentrated and liquid), type of fruit (orange and watermelon), price ($1-3, and $ 3-5 per 250 ml), sweetener (sugar and honey) and antioxidant (citric acid yes or no). For the selection of the mini-concept, a Google Forms survey was applied to 251 residents of the Caracas Metropolitan area over 18 years of age, resulting in the mini-concept: orange juice/whey, honey, $ 1-3 and with antioxidant. To establish the level of the ingredients, a Taguchi L⁴ orthogonal design was applied, with the variables being the level of honey, and the proportion of orange juice/whey, which resulted in 4 formulations that were prepared and evaluated sensorially by means of an ordering test to establish the final formulation. To determine the proximal composition of the selected concept, physicochemical analysis was conducted. Shelf life was determined, through a stability test at 5^oC for 30 days with weekly measurements of acidity and pH, resulting in a shelf life of about 30 days for the product under these conditions.

Keywords: Multicriteria Decision Techniques, functional drink, Conjoint Choice Analysis, useful life

Design of a functional weather station for solar variable measurement with low-cost devices.

Aidaelena Smith Perera — 2024-12-05

Renewable energies are at the forefront as a partial solution to the global warming problem. Maximizing the benefits of solar energy depends on how well environmental variables and solar data are understood at the specific location where it is intended to be utilized. Economically speaking, a commercial weather station is not viable for small-scale projects like the one that could be implemented at UNIMET. In this research, a meteorological information system is designed, capable of automatically measuring environmental variables, storing the data, and displaying the results in real-time. It is economically viable, robust, and reliable. The integrity of the design is tested through the development of a prototype that measures a reduced set of variables (temperature, humidity, pressure, precipitation, illuminance, and wind speed), showing the system's effectiveness in laboratory tests. This work presents the design and the prototype's test results.

Neuroanthropology, social behavior and digital technology.

Estefania De Lima Elster — 2024-12-05

The constant use of digital technology is modifying the neuronal structure of the brain lobes, mainly the frontal lobe, inhibiting social behavior and modifying the way we relate to society. The method of adaptation of subjects to their social group are the so-called social skills, a group of behaviors considered correct that allow acceptance in a community. Stimulation of the frontal lobes by a digital component at an early age causes a lesion that inhibits the social behavior of infants, making it difficult for them to relate to their social environment and partially isolating them from it. If the damage produced in the frontal lobe is observed at a population level, a phenomenon that is difficult to correct is found that modifies the behavior of infants, isolating them from their environment and creating a pseudo digital specialization in infants, preventing their adaptability to stressful situations or to modifying your environment. Neuroanthropology addresses this phenomenon to explain behaviors based on changes in brain structures, thus uniting Physical Anthropology, Neurology and Psychology. The present study seeks to investigate the development of social skills in children from Greater Caracas, Venezuela, as well as the possible indicators that they present in their development in literacy and socio-emotional, for which psychologists, teachers and representatives were interviewed, an investigation framed within from the context of the 2020 COVID pandemic.

Una mirada a la personalidad vocacional y motivaciones de estudiantes previo al ingreso a la universidad

Diego García-Álvarez — 2024-12-05

At the educational level, promoting healthy and prosperous student trajectories is a significant topic. The aim of this research was to examine the correlation between the RIASEC typology and conscientious academic motivations and the likelihood of college enrollment. The research adopted an empirical, quantitative, and cross-sectional approach within the associative strategy to achieve predictive objectives. The research sample comprised 206 high school students who had not yet enrolled in college with an average age of 16.44 (SD: 1.76) and a majority female representation (66%). Holland's vocational personality typology, conscious academic motivations, and college enrollment probability were evaluated using reliable and valid scales. The study indicates that the sample's vocational traits are Entrepreneurial, Social, and Artistic. The primary studying objectives are instrumental, and the personal motives are associated with personal expectations, learning, knowledge, reaching maturity, and motivation for self-improvement. Gender differences were observed in Realistic, Artistic, and Social traits and some objectives and motives. The findings suggest that possessing Social and Entrepreneurial traits and valuing education are positively associated with the likelihood of enrolling in a university, whereas having the Artistic trait has a negative effect on this probability.