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Application of OEE for productivity analysis: a case study of a production line from the pulp and paper industry

Abstract: The overall equipment effectiveness (OEE) is an indicator used in the management and continuous improvement of production systems, and is useful in identifying losses, thus reducing production costs. By analyzing the results of this indicator, the operation m

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Dynamics of physicochemical variables of the northern Colombian Caribbean coastal waters

Abstract: This study explored oceanographic dynamics related to high productivity processes in the northern Colombian Caribbean. Four scientific expeditions were carried out between May and December 2018, where selected physicochemical variables were measured using a C

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Design of a surface response model to determine the optimal value for wood volume in Acacia mangium Willd, by applying different doses of biochar to the soil

Abstract: The low fertility of soils of the eastern plains of Colombia makes it necessary to search for methods of improving different soil properties. Fertile soils increase yields of different crops in the region, and particularly agroforestry agroecosystems will inc

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A review of Machine Learning (ML) algorithms used for modeling travel mode choice
Juan D. Pineda-Jaramillo

Abstract: In recent decades, transportation planning researchers have used diverse types of machine learning (ML) algorithms to research a wide range of topics. This review paper starts with a brief explanation of some ML algorithms commonly used for transportation res

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Irrigation scheduling techniques and irrigation frequency on capsicum growth and yield

Abstract: The present study aimed to evaluate different irrigation scheduling strategies on capsicum growth and yield in protected environment. The experiment was carried out at the Northeastern of Brazil. Five irrigation scheduling techniques to define water depth (we

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Influence of Ag nanoparticles on the physical properties of multilayers of Graphene

Abstract: Graphene has attracted considerable interest due its exceptional physical properties. This article describes the thermoelectric and magnetic properties such as the Seebeck coefficient and the magnetoresistance, at room temperature, of multilayers of graphene

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Characterization of electric faults in photovoltaic array systems

Abstract: Electric faults in photovoltaic (PV) systems cause negative economic and safety impacts, reducing their performance and making unwanted electric connections that can be dangerous for the user. Line-to-line, ground and open circuit faults, are three of the mai

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Application of the SERVQUAL model to evaluate the quality in the transportation service in Morelia, Mexico

Abstract: Purpose: The objective of this paper is to evaluate the quality of the public transportation system service in the city of Morelia, Mexico. Methodology: According to the needs of the study, the expectation-perception SERVQUAL model was adapted, which consis

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Design and manufacturing of an ultrasonic reactor for biodiesel obtaining by transesterification

Abstract: It presents the design, development, and implementation of the ultrasonic reactor in laboratory level for batch transesterification with temperature variation, with a mechanic and electronic modular development; its operational characteristics were obtained t

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Effect of FC3R on the properties of ultra-high-performance concrete with recycled glass

Abstract: Ultra-high-performance concrete (UHPC) is the essential innovation in concrete research of the recent decades. However, because of the high contents of cement and silica fume used, the cost and environmental impact of UHPC is considerably higher than conventi

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A clustering algorithm for ipsative variables

Abstract: The aim of this study is to introduce a new clustering method for ipsative variables. This method can be used for nominal or ordinal variables for which responses must be mutually exclusive, and it is independent of data distribution. The proposed method is a

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Two-dimensional hydrodynamic analysis of surface drainage on an urban road

Abstract: This paper presents a two-dimensional hydrodynamic modeling of a part of an urban road which considers topography, distribution of inlet grates and crossroads with the goal of determining better design criteria for urban road drainage. Preferential flow indic

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Determination of plantain crops associated with coffee environmental impacts on agroecosystems by means of Life Cycle Assessment: case study in the Southwest of Antioquia (Colombia)

Abstract: Plantain and coffee are basic foodstuff of Colombian family standard basket, constituting important sources in the dynamism of the economy of the country. Given the importance of these products, five environmental impacts: global warming, aquatic eutrophicati

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Using Artificial Neural Networks to predict monthly precipitation for the Cali river basin, Colombia

Abstract: Studying future precipitation behavior in river basins is essential for adequate land-use planning within them, as this will help to reduce vulnerability and mitigate disasters. This study analyzed climate change scenarios in the Cali river basin using a mont

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Performance of broilers submitted to different intensities and duration of thermal stress

Abstract: The performance of broilers submitted to thermal discomfort in the first weeks of life may be impaired, since the thermoregulatory system of the bird is not fully developed. The objective of this study was to analyze the effects of different thermal challenge

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Numerical determination of the correct solvents to extract a phytochemical from coffee pulp using Hansen solubility parameters, risk assessment, sustainability evaluation, and economic analysis

Abstract: Chlorogenic acid (CGA), a high value-added phytochemical used by the pharmaceutical and food industries, is found in residues and byproducts of the coffee industry. This paper presents a methodology to identify the adequate solvents to extract CGA from coffee

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Strategy to determine the existence of small-scale wetlands in tropical Andean zones (Colombia)

Abstract: The Flandes community, (Tolima, Colombia), has proposed the protection of an ephemeral wetland that has been an object of interest for developers, who, by means of a simple drainage and using the dry season to their advantage, may convert a seasonal wetland i

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Pseudonym change strategy based on the reputation of the neighbouring vehicles in VANETs

Abstract: Pseudonym change schemes have been studied in VANETs to guarantee the property of untraceability of the vehicles. This paper proposes a new condition based on the assumption that if there are no malicious vehicles around when a synchronous change triggers, th

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Comfort and energy consumption in a hybrid tunnel-type broiler barn in different bioclimatic zones of Brazil

Abstract: Poultry production is influenced directly by its environmental conditions and, therefore, the conditions of comfort, animal welfare, and energy consumption of the facilities. The objective of this study was to carry out an assessment of the acclimatization ne

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Usable and interactive application generator for Digital TV
Mirtha Miranda Sandra Casas

Abstract: Interactive Digital TV (iDTV) enhances viewers’ experience and participation by engaging them with an active role. The development of interactive software requires the employment of usability criteria to provide satisfactory experiences for users. In addition

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Effect of edible coatings of polysaccharide-protein-lipid structure on andean blackberry

Abstract: Edible coatings (EC) have shown advantages in fruit preservation. The influence of an EC based on a polysaccharide-protein-lipid structure (Cassava starch: CS, whey protein: WP, and beeswax: BW), glycerol (G), stearic acid (SA) and chitosan (CH), on texture a

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Sensitivity of the Superpave mix design method to different methods for determining the maximum specific gravity

Abstract: This study aimed to analyze the influence of different methodologies to determine the maximum specific gravity on the Superpave mix design method. The comparative analysis focused on the volumetric parameters, on the choice of the design particle size and, co

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Antimicrobial potential of a hydrolyzed protein extract of the microalgae Nannochloropsis sp.

Abstract: Microalgae are photosynthetic microorganisms widely used at the industrial level because of their high content of compounds with bioactive properties such as antimicrobial peptides. These compounds have a wide range of action mechanisms, do not produce the re

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Methodology for maintenance management based on diagnostic criteria

Abstract: The present research was as objective to design a methodology for diagnostic of maintenance management, to can apply any field of production or service. In the design a study realized in different methodology was used expect tools work, storm brain and the De

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Metropolis: an emerging serious game for the smart city

Abstract: Emerging serious games mark the beginning of a new era in video games. Emerging serious games introduce advances in distributed artificial intelligence into their design in order to guide the player’s manipulation of a specific subject in an adaptive way. In

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Growth of Desmodesmus subspicatus green microalgae and nutrient removal from sugarcane vinasse clarified by electrocoagulation using aluminum or iron electrodes

Abstract: Sugarcane ethanol production generates considerable quantities of vinasse, its main wastewater. Microalgae cultivation is a promising option for effluent remediation, since the generated biomass can be feedstock for biofuel and bio-based chemical production.

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Selection of emerging technologies using the Analytic Network Process in a Colombian public university

Abstract: The research management processes in the universities is one of the key elements for the financial resources allocation, which promote and transfer promising technological developments to the society. The research entitled "Strengthening the institutional tec

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Effect of bathymetric changes on residence time in Buenaventura bay (Colombia)

Abstract: In order to study the effects of dredging on the residence time of the water in Buenaventura Bay, a 2D finite elements hydrodynamic model was coupled with a particle tracking model. After calibrating and validating the hydrodynamic model, two scenarios that r

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Missing data in multiple correspondence analysis under the available data principle of the NIPALS algorithm

Abstract: Multiple correspondence analysis (MCA) in the presence of missing data is usually performed by removing the records that have missing or not available (NA) data; sometimes, an entire row or column of a data matrix is removed, which is not ideal because releva

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Socioeconomic strata as proxy variable for household income in transportation research. Evaluation for Bogotá, Medellín, Cali and Barranquilla

Abstract: In Colombia, a socioeconomic stratification (SES) system of households based on the physical characteristics of the dwelling and its surroundings is implemented in order to set subsidies to public services. Many studies use this classification as a proxy vari

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Evaluation of reanalysis data in the study of meteorological and hydrological droughts in the Magdalena-Cauca river basin, Colombia

Abstract: Droughts are a natural phenomenon of water deficit and represent one of the most dangerous natural hazards to human activities; accordingly, its understanding and monitoring are vital. For this purpose, long historical series of precipitation and evapotranspi

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Effects of strain on Lα 0.67-x Pr x Cα 0.33 Mn0 3 , LαMn 1-X C0 x 0 3 and LαMn 1-x Ni x 0 3 magnetite samples

Abstract: This paper presents the results obtained from the synthesis and morphological characterization of different magnetite samples: Lα 0.67-x Pr x Cα 0.33 Mn0 3 at 0.13 ≤ x ≤ 0.67 produced by a solid-state reaction mechanism and LαMn 1-x Ni x 0

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Biodegradable polymer nanocomposites applied to technical textiles: a review

Abstract: Based on the results of research papers reflected in the scientific literature, the main examples, methods and perspectives for the development of technical textiles are considered. The focus of this work is to concentrate the results obtained for different t

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Fluid-structure study of a polymeric coating reinforced with carbon nanotubes (CNT) for potential application in stents

Abstract: The therapeutic approach of the atherosclerotic plaque has been visualized from multiple perspectives, which include from the handling of drugs until the implantation of medical devices like stents. A current alternative to restenosis appearance, is the use o

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Simulation of the operation of a natural gas transport system based on a criterion of minimum operating cost

Abstract: In this article, a simulation model of a natural gas transport network based on the minimization of its operating costs was developed. For this, a system of equations that determine these costs and the conditions that characterize it are established, to later

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EspiNet V2: a region based deep learning model for detecting motorcycles in urban scenarios

Abstract: This paper presents “EspiNet V2” a Deep Learning model, based on the region-based detector Faster R-CNN. The model is used for the detection of motorcycles in urban environments, where occlusion is likely. For training, two datasets are used: the Urban Motorb

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The influence of the microstructure on the abrasive wear behavior of anti-wear weld deposits applied on low alloy and low carbon steel substrates

Abstract: In the reconstruction of parts of machinery is essential to determine the best option in terms of material deposited by welding geometries recovery losses are concerned. This work was developed to enhance applications of hard coatings and fillers for the reco

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The study of Necrosols and cemetery soils

Abstract: This article shows the interdisciplinary approaches that integrate knowledge regarding the contemporary and ancient cemetery soils and clandestine burials that produce bio-geo-archaeological, recent forensic scientific interest, the above is what compiles the

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Dispersion of particulate material 2.5 emitted by roasted chicken restaurants using the AERMOD model in Huancayo Metropolitan, Peru

Abstract: This paper evaluated dispersion of PM2.5 emitted from roasted chicken restaurants around Metropolitan Area of Huancayo city, Peru. It was used topographic data with 30 m of resolution, surface and vertical structure meteorological data. Main characteristics f

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Experimental evaluation of Fuzzy controller performance applied in autonomous photovoltaic system

Abstract: This paper aiming to show an experimental evaluation of classic pole placement and Fuzzy controller design applied on the DC link voltage control in autonomous photovoltaic system in order to ensure the stability and desired performance. First stage shows the

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Growth and mineral composition of the melon with different doses of phosphorus and organic matter

Abstract: It was aimed to evaluate the effect of doses of phosphorus and different doses of bovine manure on growth of melon Galia. The experiment was carried out in greenhouse utilizing pots filled with soil Chromic Luvissoil in design completely randomized with a 5 x

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