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Abstract: This paper aims at formulating a Picking Routing Problem with K homogenous material handling equipment for a refrigerated warehouse (PRPHE). Discrete particle swarm optimization (PSO) and genetic algorithm (GA) metaheuristics are developed and validated for s
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Abstract: This document discusses the results of the implementation of the Third National Survey on Public Perception of Science and Technology applied in Colombia. It analyzes the effect of education over some aspects related to the perception about Science and Techno
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Abstract: This paper examines the main characteristics of a clay used for manufacturing ceramic construction parts in the metropolitan area of San José de Cúcuta. The research was conducted using a sample of reddish clay of the Guayabo formation from the Zulia region i
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Abstract: In the current study, a bioactive glass (BG) powder was prepared by sol-gel technique in the system SiO2 –CaO–P2O5, and both, bioactive glass precursors (BGi) and the powder of bioactive glass (BGp) were used to produce crosslinked chitosan composite scaffold
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Abstract: Microbial transglutaminase (MTGase) is widely used as an additive in the food industry for improving the mechanical properties and texture of foods. The enzyme production process is expensive due to the cost of the components of the fermentation medium used,
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Abstract: This paper presents a methodology to quantify the amount of blast densification or number of passes required for a given project to prevent liquefaction and flow in saturated, loose sandy soils. The proposed methodology is based on the concepts of the critica
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Abstract: An integrated wastewater treatment was evaluated for nitrogen and COD removal from a tannery effluent. The system was conformed by the combination of a biological treatment using a sequencing batch reactor (SBR) followed by a physicochemical treatment based i
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Abstract: Landslides are one of the main causes of global human and economic losses. Vulnerability to landslide hazards has increased due to expanded land urbanisation in areas with high landslide susceptibility. Therefore, landslide hazard assessment and the capacity
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Abstract: The aging process causes changes in the properties of asphalt mixtures, such as weak adhesion of mineral aggregates to the asphalt and increase of asphalt’s rigidity and viscosity, which in turn directly affect the durability of asphalt pavement. This study a
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Abstract: Web application frameworks and ORM tools reduce time and effort needed when developing quality applications; but, since they are numerous and heterogeneous choosing the best suited is not an easy task. The comparative studies of these tools do not consider ca
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Abstract: This paper presents a system for the automatic detection of hypernasal speech signals based on the combination of two different characterization approaches applied to the five spanish vowels and two selected words. The first approach is based on classical fea
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Abstract: This work presents a machine vision system for weed detection in vegetable crops using outdoor images, avoiding lighting and sharpness problems during acquisition step. This development will be a module for a weed removal mobile robot with camera obscura (Lat
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Abstract: In the last decade, spatio – angular (light field) acquisition systems have advanced due to the inclusion of coded apertures in the optical path. These coded apertures, modulate the light, encoding the information before being captured. Traditionally, these c
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Resumen: The adjustment of scale factors in fuzzy controllers is a key factor in their correct functioning. In two-inputs fuzzy PID controllers, such as fuzzy PI+D (FPI+D) and fuzzy PD+I (FPD+I), the adjustment of scale factors is directly related to the adjustment of
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Abstract: In a solid, the electrical conductivity and optical transparency seem to be two contradictory physical properties. Conductive materials are opaque, and transparent solids are electrical insulators. Combinations of these two physical properties in a material m
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