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Descripción: “...This paper presents a dimensional model for a data warehouse that enables the analysis of information related to the appropriation of ICT skills by teachers and students of educational institutions. The design cases are based on Ralph Kimball’s proposals: many to many relationship, heterogeneous products, subdimension and organizational hierarchy. ...”

Descripción: “...Initially a short analysis is made of the theoretical framework of the prospective as well as a summary of the results of interviews with managers of some institutions about the need to forecast the future as key to sustainable business success. ...”

Descripción: “...objective: to analyze the factors that influence the academic performance of students in Colombia, considering both individual characteristics and factors related to the educational institution. Methodology: a hierarchical econometric model was used to nest the data at different levels, and the individual results of the Saber 11° tests of the Colombian Institute for the Evaluation of Education were used for both semesters of 2021. ...”

Descripción: “...El sistema de riego que presentó un coeficiente de uniformidad más homogéneo durante la mayor duración de riego continuo (72 horas) fue el correspondiente al módulo con los goteros Lyn que alcanzó valores de 91,5 % (calificación buena), y el desempeño menos eficiente lo presentó la cinta de riego.Abstract: Unconventional filtration technologies based on the upward flow of water through filters with layers of materials with different grain sizes are used to evaluate the coefficients of uniformity in four irrigation modules of high frequency in water treatment plant at the Research Institute Cinara in Cali. Each module uses different irrigation emitters: Microjet, built-loaded (Aqua-Traxx), Lyn, and irrigation tape (Queen Gil). ...”