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Bogota, Colombia

Ramirez Triana C.A.,Grancolombiano Polytechnic
Energy Policy | Year: 2011

As with any other bioenergy product, bioethanol production requires fossil fuel inputs; hence the alleged benefits of energy security and carbon mitigation depend on the extent to which these inputs are capable of drawing a substantive bioenergetic yield. Brazilian ethanol, made out of sugarcane, has been reported as the most efficient gasoline substitute that is commercially available nowadays. For that reason it has been the object of several analyses on the energetics, i.e. energy balances. These studies surprisingly vary widely according with the scholar approach and are not fully comparable among them due to divergences in the assessment method. This paper standardises results of the four most prominent authors in the field, establishing a point of comparison and drawing some light on the energetics studies on biofuels. The main result is shown in Table 5, which homogenises the outcomes for referred studies in terms of unit of assessment in the energy input analysis. Subsequently, this information is also charted (Fig. 2) explaining the source of divergence among authors. This work ends with a short reference and comparison to some energy balance studies carried out on feedstocks of diverse nature, highlighting the potential that sugarcane-based bioethanol represents nowadays. © 2011 Elsevier Ltd. Source


Corredor J.A.,National University of Colombia | Benavides L.R.,Grancolombiano Polytechnic
International Journal of Gaming and Computer-Mediated Simulations | Year: 2016

This article aims at investigating the differences among three groups having distinct levels of experience in massively multiplayer online role-playing games (MMORPG), when solving a character design task in the videogame World of Warcraft (WoW), and when planning how to use the character during gameplay. These groups consisted of inexperienced players, general experts in MMORPGs and specialized WoW domain experts. The evaluation showed that MMORPG experience developed character design abilities that could be applied to other videogames (e.g., general expertise skills). Such skills were related to the ability to identify deep features related to particular types of characters (e.g., Rogue). The results also showed that there are domain expertise specific abilities, which only experts in WoW have. Such abilities were related to building game descriptions that could be considered narrative in the cognitive sense of the term, because they include time, intention and interaction, and also to identifying WoW-specific variables. Copyright © 2016, IGI Global. Source


Pineda-Escobar M.A.,Grancolombiano Polytechnic | Cuervo F.G.,Association for Consumer Research
Advances in Sustainability and Environmental Justice | Year: 2016

Purpose - The purpose of this chapter is to call for a better cohesion between development cooperation, on the one hand, and inclusive business, on the other. This contributes to the existing post recessionary debate on development cooperation, in which, (i) traditional aid and partnership effectiveness are being revised and, (ii) the role of the private sector in development is being emphasized. It builds on recent discussions that call for a more strategic use of development cooperation to leverage other development-oriented flows, particularly those coming from the private sector. Methodology/approach - The chapter corresponds to a conceptual chapter. Results were obtained through the study and comparison of secondary sources and a literature review. It first explores donor-private sector relations, paying particular attention to the OECD Development Assistance Committee (DAC), and then moves on to the study of inclusive business in relation to development aid. Findings - The study first reflects upon shifts perceived in development cooperation since the Great Recession, and analyses how foreign donors have engaged more widely with businesses for addressing global development challenges. The concept of inclusive business is then introduced, describing how although the development community acknowledges the potential of the private sector as a driving force for development, inclusive business have hitherto been developing, to a great extent, aside of broader development efforts. The final section presents a typology that proposes various ways in which donor agencies may integrate inclusive business support into their private sector programs. Practical implications - The chapter is of use for both academics and practitioners with an interest in development cooperation and/or inclusive business. Originality/value - Proposing a conceptual study that tends toward a greater cohesion between inclusive business and development cooperation is a contribution to the literature that has emerged on Base of the Pyramid markets since early 2000s. It is argued that such cohesion may prove valuable for the betterment of public-private relations, turning them more responsive to the challenges of sustainable development in the post-2015 world. Copyright © 2016 Emerald Group Publishing Limited. Source


Cortes-Rico L.J.,Pontifical Xavierian University | Cortes-Rico L.J.,Grancolombiano Polytechnic | Florez-Valencia L.,Pontifical Xavierian University
2015 10th Colombian Computing Conference, 10CCC 2015 | Year: 2015

Tangible User Interfaces is a specialized area of research inside human-computer interaction, that is oriented to the access, representation and manipulation of digital information through everyday physical objects. This paper presents the proposal of a modeling notation to describe tangible interfaces, defined as a UML (Unified Modeling Language) profile, in which we used its extension mechanisms to describe this type of interfaces. The proposal is founded on the conception of tangible interfaces, and from a wider perpective tangible interactions, as a diffuse boundary between material and digital. In this sense, the notation allows the representation of these dimensions in the same diagram, specifically, an extended class diagram. © 2015 IEEE. Source


Gomez A.,EAFIT University | Quintero L.,EAFIT University | Lopez N.,National University of San Juan | Castro J.,Grancolombiano Polytechnic
Journal of Physics: Conference Series | Year: 2016

In this work, we perform a first approach to emotion recognition from EEG single channel signals extracted in four (4) mother-child dyads experiment in developmental psychology. Single channel EEG signals are analyzed and processed using several window sizes by performing a statistical analysis over features in the time and frequency domains. Finally, a neural network obtained an average accuracy rate of 99% of classification in two emotional states such as happiness and sadness. Source

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