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Influence of Soils on Nutrient Transfer Dynamics at the Soil-Water Interface of a Tropical Reservoir

Abstract: Context: The construction of a reservoir implies flooding different types of soil, which generates a concentration gradient that favors nutrient transfer from the soil to the water column. Soils provide the reservoir with an important nutrient input, which,

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Recovery and Incorporation of expanded polystyrene SolidWaste in Lightweight Concrete

Abstract: Context: The high consumption of parts made from expanded polystyrene (EPS) generates environmental problems when disposed. Due to its low density and the low possibility of being utilized in other applications after its disposal, it is necessary to generate

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Analysis of Power and Torque Performance of a Diesel Engine Operating with Palm Biodiesel Blends

Abstract: Context: There is a trend in modern society that is based especially on the development of new biofuels, specifically oriented towards the field of internal combustion engines, establishing the loss of their thermal performance as a central point. This is on

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Knowledge Base Model for Security Audits in Web Services with SQL Injection

Abstract: Context: Due to the large number of cyber-attacks at international and national levels (Colombia), preventive mechanisms and procedures have been triggered by organizations in order to counteract vulnerabilities in information security. The issue studied by

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Analysis for Selection of Battery-Based Storage Systems for Electrical Microgrids

Abstract: Context: In the implementation of a microgrid, the most expensive element is the energy storage system, which consists of batteries in most cases. Different authors, motivated to reduce the implementation costs that allow the widespread use of microgrids, ha

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Comparative Study of a Regenerative Braking System and Regeneration with Constant Kinetic Energy in Battery-based Electric Vehicles

Abstract: Context: The constant increase in the use of electric vehicles worldwide has motivated research to improve their autonomy compared to traditional combustion vehicles. This article presents the study of a battery charging system for electric vehicles based on

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Mathematical Model for Centralized Supply Chains with Decisions Involving Shared Resources

Abstract: Context: Cooperation in supply chain management is an important issue considering the global performance of the different echelons of a specific supply chain. In this sense, applying logistic strategies such as VMI (Vendor Managed Inventory) allows a system

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Optimal Placement of Capacitors, Voltage Regulators, and Distributed Generators in Electric Power Distribution Systems

Abstract: Context: With the advent of the smart grid paradigm, electrical distribution network (EDN) operators are making efforts to modernize their power grids through the optimal implementation of distributed generators (DGs) and other devices such as capacitors (CA

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The Sustainable Supply Chain: Concepts, Optimization and Simulation Models, and Trends

Abstract: Context: The environmental and social dimensions of performance are of great importance, given that they must be incorporated into strategic, tactical, and operational objectives in companies and supply chains to minimize negative impacts on the environment

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Analysis, Design, and Multi-physics Simulation of a Terahertz Photoconductive Antenna Using the Finite Element Method

Abstract: Context: The study of nanotechnology has shown great advances, which include research and exploration of the TeraHertz (THz) region, where one of the most common approaches is the use of photoconductive antennas (PCA) due to the intrinsic properties of their

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Design of a Troubleshooting Digital Test Bench for the Beechcraft King C-90, 200, B200, 300 and 350 Aircraft GCU

Abstract: Context: The Colombian Army’s First Aircraft Maintenance Battalion must periodically test the performance of Generator Control Unit (GCU) on its Beechcraft King Air aircraft, which compels the operator to assume uncomfortable and non-ergonomic physical posit

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Application of a Supervised Learning Model to Analyze the Behavior of Environmental Variables in a Coffee Crop

Abstract: Context: The collection and storage of data on environmental variables in a coffee crop, through wireless sensor networks allow the transformation of said data and the application of a supervised learning model to establish its behavior. Method: For the pre

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Design and Prototyping of an Electronic Cane for an Indoor Guide System for the Blind

Abstract: Context: Blindness is a physical-sensory disability that limits the ability of affected people to carry out daily-life activities and deteriorates their quality of life. It is estimated that there are 296.000 blind people throughout the Colombian territory.M

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Electronic Device for Satellite Backup of Automatic Vehicle Location Equipment Using the Iridium Network

Abstract: Context: This paper presents the design and development of an electronic device that operates as a satellite backup channel for automatic vehicle location (AVL) equipment, whose only communication channel is the cellular network.Method: The design, manufact

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