Indexados Scopus: Envíos recientes
Mostrando ítems 901-920 de 1632
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CO2 activation on small Cu-Ni and Cu-Pd bimetallic clusters
The use of CO2 to produce methanol is a reaction of growing interest, where bimetallic Cu-M catalysts become relevant as an alternative to the known Cu/Zn/Al2O3 catalyst. However, there is a lack in the understanding of ... -
Community journalism: Appropriation, mediation and transfer of media. Dialogue of knowledge between academia and communication collective [Periodismo comunitario: Apropiación, mediación y transferencia de medios. Diálogo de saberes entre Academia y colectivos de comunicación]
This article reflects on two processes of appropriation and media management with a social sense, which are founded upon the recognition of communication processes and their impact on the transformations of peripheral ... -
Common aspects of the Chicago and Harvard schools of antitrust analysis: The neo-institutional contribution [Aspectos comunes de las escuelas de Chicago y Harvard en materia de libre competencia: El aporte del neoinstitucionalismo]
On the understanding that Harvard and Chicago Schools postulates, this paper conducts a comparative analysis between those and the conceptual pillars of the Neo-institutional School. Within the framework of traditional ... -
Cocreation of adaptative components for a virtual platform based on learning styles [Cocreando componentes adaptativos para una plataforma virtual basados en estilos de aprendizaje]
This paper presents the results of the co-creation stage of adaptive components for e-learning platform, focusing on learning styles. The co-creation is considered the methodology that allows to identify the adaptability ... -
Comparison of alumina ball size distribution in two white cement grinding units using swebrec function [Comparación de la distribución de tamaño de bolas de alúmina en dos unidades de molienda de cemento blanco utilizando la función swebrec]
The results of characterizing the alumina ball size distribution in two mills of a crushing and grinding plant are shown. The mills were unloaded and the ball charge was screened in order to establish the ball size ... -
Carbonation study in a cement matrix with carbon nanotubes
Carbon nanotubes as additions in Portland cement based matrices have a great potential to improve the mechanical properties of mortars and concretes; however, little work has been done regarding the effect that they have ... -
Double-walled carbon nanotube deformation by interacting with a nickel surface: A DFT study
The effect of interaction between (4,4)@(9,9) double-walled carbon nanotube and Ni(111) surface is studied by density functional theory calculations, including van der Waals interaction effects. Different modes of adsorption ... -
Citizen participation in Colombia s constitutional process of 1991. Right to education [La participación ciudadana en el proceso constituyente de Colombia de 1991. El derecho a la educación]
"During the constituent process in Colombia of 1990 to 1991, specific participatory mechanisms were established in order to allow the citizenship to present initiatives in regard to those subjects that they considered, at ... -
Business intelligence applied to ecotourism in Colombia: A case study using CRISP-DM Methodology [Inteligencia de negocios aplicada al ecoturismo en Colombia: Un caso de estudio aplicando la metodología CRISP-DM]
Tourism is a relevant economic activity for the Colombian government and given the comparative advantages that the country has, ecotourism is a prioritized focus on productive development. For tourism, the government has ... -
Automated velocity estimation by deep learning based seismic-to-velocity mapping
We propose a novel method for velocity estimation that leverages the newest advances in Deep Learning (DL) technology. This method is fully automatic and maps seismic shot-domain data to corresponding depth-domain velocity ... -
Assessment of the current situation of informal recyclers and recycling: Case study Bogotá
The contribution of recyclers to the environment and the local economy is not recognized and they are not remunerated for the service they provide to the city. It is well known that informal collection contributes to the ... -
Binding and activation of ethylene on tungsten carbide and platinum surfaces
Density functional calculations were used to evaluate the ability of cubic and hexagonal phases of tungsten carbide to bind ethylene, as a model compound of unsaturated hydrocarbons, since its adsorption is the first step ... -
Breakdowns of the chronology and sense: A narratological approach to from the life of the marionettes [Quiebras de la cronología y sentido: Una aproximación narratológica a De la vida de las marionetas]
The present article proposes an approach to one of the less studied films of the Swedish director Ingmar Bergman: From the life of the Marionettes (Aus dem Leben der Marionetten, 1980). We are particularly interested in ... -
Background impurities and a delta-doped QW. Part I: Center doping
The influence of shallow background donor impurities on the energy characteristics of the SiGe/Si/SiGe quantum well structure with centered delta-doping is studied numerically. The description of the self-consistent method ... -
Applying rhetorical analysis to processing technical documents
Rhetorical discourse analysis (RDA) emphasizes the communicative purpose and organization structures of texts. This paper proposes a rhetorical organization model for business-based technical documents. Using RDA and genre ... -
Approach to urban planning in Colombia. Notes for a historical understanding [Aproximación a la planeación urbana en Colombia. Apuntes para su comprensión histórica]
The purpose of this article is to describe the history of urban planning in Colombia, based on the definition of four fundamental stages that group the characteristics and their evolution in the country. Each stage denotes ... -
Application of the hodrick-prescott model for the price forecast of electricity in Colombia [Aplicación del modelo de hodrick-prescott para el pronóstico del precio de la electricidad en Colombia]
The Colombian electricity market aims to offer a continuous and reliable service. However, the specific characteristics associated with its high dependence on hydroelectric generation, the technical limitations that allow ... -
Analyzing the impact of the digital divide on e-commerce in Colombia
The aim of this study is to examine whether the digital divide has a moderating effect on the technological factors that affect the adoption of electronic commerce. This study propose an exploratory empirical model that ... -
Análisis de actitudes y prácticas para identificar, prevenir y denunciar la explotación sexual comercial por estudiantes de educación superior en turismo
One of the worst ways to violate the rights of children and adolescents is through commercial sexual exploitation (CSEC). This sexual violence affects minors, which are sexually abused and used for profit. This study aims ... -
Crisp-dm/smes: A data analytics methodology for non-profit smes
The exponential increase in information due to technological advances and the development of communications has created the need to make decisions based on the data analysis. This trend has opened the doors to new approaches ...