bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design of a Fuzzy Controller for a Hybrid Generation System
Authors: Nuñez J. R. , Mestre J. , Cabello J. J. , Dominguez H. , Fong J. , Peña L. , Benítez I. , De Oliveira D. 
Published: June 2020

Abstract
This paper presents the design of a control system for the automatic connection/disconnection and distribution of load, between an asynchronous alternator and a generator, in a hydroelectric central that works in isolated mode. The design of a control algorithm based on fuzzy logic is exposed, as this is a flexible method to be used in different installations with a variety of technology. The controller is supported on the Arduino Mega 2560 platform, in order to develop a low-cost system with its own technology, it is tested by computer simulation using the professional software Proteus v7.7, which guarantees that once validated the correct operation of the controller can be migrated to another system, say for example a PLC. The results obtained are shown and the simulations performed to the different blocks of the system are explained.
A proposal for updating the Response Spectrum of San Jose de Cucuta, Colombia
Authors: Florez C. H. , Marquez J F , Lozano C F 
Published: June 2020

Abstract
An analysis of seismic signals captured in three stations of the network of accelerographs of the Colombian Geological Service (SGC, by its acronym in Spanish) was developed for the city of San Jose de Cucuta, Colombia. Earthquake Equivalent, Response Analysis (EERA) and DEGTRA4 software were used for analysis, processing and calculation of signal response spectra during the characterization and propagation modelling of the signal by profiles. For the accelerograms family, a normalization factor computed with respect to the Peak Ground Acceleration (PGA) was obtained by superposition against the typical design spectrum of the Colombian earthquake resistant code (NSR10). It was found that there is a band of frequencies above the maximum acceleration zone of the design spectrum of the current standard. This suggests a revision of the seismic threat of the city of Cucuta and the urgent need to develop the seismic microzoning, which would allow a substantial reduction of the seismic risk.
Growth Optimization of Chlorella Vulgaris in Mixotrophic Culture Enriched with Nutrients using Experimental Design
Authors: Baldiris-Navarro Ildefonso , Aponte Jorge Sanchez 
Published: June 2020

Abstract
In this research, statistical optimization designs were applied to evaluate the growth of the Chlorella vulgaris in mixotrophic cultures enriched with nitrogen and phosphorus. The influence of each factor was evaluated at three levels, so a multifactorial experimental design was created 32. The results obtained showed that microalgae growth improves 32% by adding 50 mg of nitrogen and 25 mg of Nitrogen to the culture. This project demonstrates the relevance of the design of experiments for the optimization of algal biomass production in order to obtain bioproducts.
Benefits of the instrumentation, monitoring and control systems (IMC) of bridges in Colombia, from an economic point of view through a case study
Authors: Castro J D , Suarez L , Cerón I C 
Published: June 2020

Abstract
An instrumentation, monitoring and control (IMC) system is the result of the application of different branches of engineering such electrical, systems and telecommunications, applied to solve a problem in civil engineering, and achieving a radical innovation in the construction and the maintenance of bridges. These different branches come together to carry out activities such as the development of measurement instruments, applications for the storage and analysis of data, and the transmission thereof. This article presents the state of art about road infrastructure controls in Colombia, particularly on bridges. It summarizes some important cases of collapse with their main causes, establishing as an effective solution IMC of the bridges throughout the structures’ life cycle, showing the benefits associated with the initiation of the system. In addition, an economic analysis of the installation of an IMC system is presented through a case study of one bridge located in Colombia, which has enabled us to identify and find relevant information related to those responsible for the project, the required instrumentation and the investment percentages regarding this particular type of project. The text consists of seven sections, which address the problems, instrumentation, software and personnel requirements for this type of project in Colombia, and finally to examine the associated costs.
Agriculture 4.0 the advance in models and new knowledge to improve production
Authors: González-Salazar F 
Published: June 2020

Abstract
This article presents Research on the design and application of a model that allows controlling agroecological variables and conditions based on inductive-deductive methods supported by qualitative and quantitative tools such as metadata, trend tools and comparison graphs. This Model represents the knowledge of the farmer in a different kind of applications that allows the continued progress of the agriculture. The model has been tested with some agricultural, plant and animal species in controlled in real environments, where the quality of the cultivated species can be measured to determine improvements in nutritional quality, this measure is made by sensors of temperature, pH, lumens and humidity then we have a mathematical model that allows the simulation of the variables that we want to control that includes monitoring and control times. From here, concepts of agriculture 4.0 are associated, which consists in mitigating the risk in different in the environments. Currently, the integration of concepts and technologies associated with the fourth industrial revolution is evaluated through the simulation of variables and comparison between ideal and real models.
Study of linear strain gauges at micron scale for the reduction of external factors
Authors: Villamizar C T , Arevalo W Y , Castiblanco C C 
Published: June 2020

Abstract
In the present article, the design and simulation of a strain gauge is shown, which serves to measure deformation or pressure in different applications of the industry. In this way, the respective simulation was carried out in the COMSOL Multiphysics 5.2 software, where the 3 linear meander gauge was subjected to external factors such as temperature and pressure, with this, the different results obtained were shown the mechanical behavior and of Graphene and Silver grid materials and substrate Paper. On the other hand, in front of the design of the three-way linear strain gauge, M.E.M.S (Micro-electromechanical Systems) parameters technology was used to reduce its dimensions in micrometers to reduce the effects of the respective external factors where these produce errors in the measurements.
Automation of the Conductive Ink Synthesis from Recycled Parts from Metallurgical and Chemical Residues Joined to Polymer Resin and Solvent
Authors: Lara Jhon , Cantillo Sergio , Castillo Karolina , Montalvo Jorge , Lara Karen 
Published: June 2020

Abstract
Conductive ink is a modern method for making printed circuit boards (PCB’s), with new and somewhat different properties such as electrical conductivity, adhesion on non-conventional surfaces (glass, wood and paper) and the printability it possesses. However, such technology is cost and limited access given the machinery needed for the synthesis of ink and the tax on our currency. This situation leads to an increase in the technological gap between developed and developing countries. Therefore, the objective and motivation of this work is to present InkCo, a machine that automates the process of synthesis of conductive ink from metallurgical and chemical waste of the region. Understanding that through automation, virtual CAD modeling and materials science it is possible to develop the objectives of sustainable development (ODS) 4, 9 and 12, which seek innovation in industry and responsible consumption. Based on these ideas, InkCo is a mechatronic technology product that seeks to reduce this technological gap, through the implementation of rapid prototyping technologies (3D printing, laser cutting and prototyping of controlled circuits), for its structural construction, and thus generate an input (conductive ink) that can be used for the creation of more unconventional technology (3D printing of amorphous circuits on dielectric surfaces).
Smart Institution Model
Authors: Pilamunga Poveda M , Santamaría Aguirre J L , Viera Alulema E 
Published: June 2020

Abstract
An institutional management model focused on the optimization of processes and services that emulates a Smart City on a smaller scale is the proposal that the Technical University of Ambato must direct its development towards a vision of efficient connectivity, reduction of resources and the approach to a Green workflow. The current problem of bureaucracy existing in public institutions in developing countries is a factor that leads to unsuccessful expenditure of time, money and personnel that must generate several steps within the value chain and due process to achieve a procedure that results in an action or service.. The model proposal focuses on the connectivity between teachers, students and the institution for the automation of activities that were performed manually, generating a virtual model that reduces time and processes; the use of security devices for the identification of people within the university environment and the communication carried out mainly through wearables with support of touch screens, mobile devices and apps; these tools will serve as a support for fast and fluid results under a solid data platform, that allows the collection of relevant information of diverse nature and its application to solve specific needs of the institutional and academic environment.
Information T echnology Governance Model, Based on Risk Management and Information Security for Colombian Public Universities: Case on Study University of La Guajira
Authors: Viecco L R , Arevalo J G 
Published: June 2020

Abstract
Nowadays Universities require the implementation of practices in (IT)information technology governance issues where it involves structures, processes, mechanisms and measurement indicators for the good performance of Information Technology. In order to make a strategic alignment that defines the generation of value, and that is why this research shows the design of an IT governance. Based on model risk management and information security for Colombian public universities, for which its strategic alignment, its strategy is analysed business. Its institutional educational project in order to consolidate a model adjusted to the particular needs of each academic faculty.
Analysis of the water quality risk index for human consumption in urban areas of the department of Bolivar
Authors: Polo-Carrillo Emilia , Morales-Simancas Geraldine , Cabarcas-Ariza Yudis , Valle Rodríguez Jorge 
Published: June 2020

Abstract
Objective: To analyze the results of the Water Quality Risk Index for Human Consumption in Urban Areas of the Department of Bolívar. Materials and methods: A descriptive investigation was developed, with the objective of evaluating the compliance of the physical, chemical and microbiological characteristics of water for human consumption. The direct observation technique was used whose results are based on the application of the standardized measuring instrument authorized by the Ministry of Social Protection in Colombia - IRCA for estimating compliance with acceptable parameters established in current regulations. Results: It was found that of the 46 municipalities in the department of Bolívar, study focus 18 presents water that is not suitable for human consumption that requires special surveillance and 3 municipalities have sanitary waters that require maximum, special and detailed surveillance. Conclusions: The need to establish alternatives by the competent entities that improve the quality of water for consumption in some municipalities of Bolívar and implement strategies for the prevention of waterborne diseases was evidenced.
Design and implementation of an intelligent thermal chamber to produce plantain hills
Authors: Hurtado J López , Gallego Becerra H A 
Published: June 2020

Abstract
The project is aimed on the design and construction of a prototype device which allows the measurement, visualization and control of the temperature and relative humidity, and soil moisture inside a thermal chamber. This prototype consist mainly of two sensors, one of them to measure the temperature and humidity in the air, and the other one to measure the humidity of the soil; In addition, an Arduino development card, which be used to process the data and control the different measured Physical variables. A liquid crystal display (LCD) to display the measured data and the process it takes; In addition to other electronic devices that complement the processing and control in real time, the backup or monitoring of the thermal chamber through the days, the automatic turning on and off of a misting irrigation system and the automatic opening or closing of two windows used to let circulate oxygen inside the place.
Diagnostic tool for radical improvement in business processes
Authors: Sanchez-Comas A , Vasquez Osorio L E , Pérez-Vargas M , Caicedo-García M , Neira-Rodado D , Troncoso-Palacio A 
Published: June 2020

AbstractThe present work presents a diagnostic tool applicable in any business sector; it works as a support to managers for decision-making towards the need for a radical improvement of processes. A literary review was conducted to collect case studies in order to identify the problems it addresses and the impacts generated by the process of reengineering application in organizations. Through conceptual modeling and synthesization, some diagnostic questions were formulated related to the problems that reengineering has addressed in the literature, and an evaluation model was built that allows organizations to identify what type of problem the organization has, its processes or departments, which should be approached from a radical improvement approach. Finally a diagnostic tool with an evaluation method was formulated, to recommend initiate process improvement either organization, departments o process, formulated fully integrable with PDCA cycle and evaluation or monitoring phases for systems like business activity monitoring based on IT systems, relevant in today’s contexts when most of the nowadays organization are technology-based, and progressive improvements do not become a pragmatic and agile alternative in the business context.
Incidence of corrosion in low voltage electrical conductor
Authors: Ascanio-Villabona J G , Rincón-Quintero A D , Cardenas-Arias C G , Sandoval-Rodriguez C L 
Published: June 2020

Abstract
This research used a salt spray booth to generate accelerated corrosion in a copper conductor, AWG 12-gauge purity of 95.95%, this caliber used in residential electrical installations according RETIE Chapter 3 Article 20 and NTC 2050 338. Additionally, to provide an enabling stage of corrosion, type mouse tail splices were made. The amount of corrosion is measured by weight loss, and incidence of corrosion in transport was evaluated from two perspectives: difference active at the beginning and end of the test power, and the change in resistance of the specimen measured at different times of the experiment. The test piece was subjected to a flow of alternating current into a low voltage system, while corrosion occurred. Using two single-phase two-wire electronic meters, the rate of power supply circuit test was recorded, to check for changes in the energy carried from exposure to the corrosive environment wire. The data collected showed that exposure times of the samples in the salt spray chamber involvement was not very noticeable in the copper wire, highlighting small corrosion spots. Similarly, the energy no changes were observed to induce corrosion, however, the resistance of the wire showed a total change of up to 2.4 [milliohms]. The data collected showed that exposure times of the samples in the salt spray chamber involvement was not very noticeable copper wire, highlighting small corrosion spots. Similarly, the energy no changes were observed to induce corrosion, however, the resistance of the wire showed a total change of up to 2.4 [milliohms].
A Novel Full Boundary Element Formulation for Harmonic Analysis of Elastic Membranes Coupled to Acoustics Fluids
Authors: Narváez-Cruz A J , Useche-Vivero J F , Martínez-Trespalacios J A , Castro-Suarez J R 
Published: June 2020

Abstract

A novel full Boundary Element Formulation for the harmonic analysis of elastic membranes coupled to acoustics fluid is presented. The elastic membranes is modeled using the classical linear elastic pre-stretched membrane theory. The acoustic fluid is modeled using the acoustic-wave equation for homogeneous, isotropic, inviscid and irrotational fluids. Elastostatic fundamental solution is used in the boundary element formulation for the elastic membrane. The boundary element formulation for the acoustic fluid is based on the fundamental solution of three dimensional Poisson equation. Domain integrals related to inertial terms and those related with distributed pressure on membrane, were treated using the Dual Reciprocity Boundary Element Method. Fluid-structure coupling equations were established considering the continuity of the normal acceleration of the particles and dynamic pressure at fluid-structure interfaces. Results obtained shows the accuracy and efficiency of the proposed boundary element formulation.
The Reading Plan: A Strategy to support the Academic Performance of students of Systems Technology at Antonio de Arévalo University Foundation
Authors: Sánchez-Castro N 
Published: June 2020

Abstract
This article is the result of the research: The reading plan at the Antonio de Arévalo University Foundation: a strategy to support the academic performance of students entering the first semester of higher education. This research is part of the linguistic, psycholinguistic and sociocultural approach of Daniel Cassany achieving results from a diagnostic test of reading levels and is based on three moments; the preparation, execution and evaluation of the project to the group under study. The conclusions indicate that the course oriented from this approach manages to develop reading and writing levels that allowed them to better understand the other subjects.
Development of a web system for the management of PQRS in higher education institutions
Authors: Blanco-Jimenez Y , Ahumada-Torres L K , Castro-Suarez J R , Chico-Ruiz M A 
Published: June 2020

Abstract
The acquisition or development of a software in a company must always obey to meet a specific need, either to carry out a process in a better way or as an added value to a process that is currently managed efficiently. Such is the case of the web system for the management of requests, complaints, claims and suggestions (PQRS) of the Antonio de Arévalo University Foundation - Unitecnar, which emerges as a technological tool to systematize and optimize the current process of registration, consultation, management and monitoring PQRS. The article below details the development methodology implemented that for this case was the agile XP methodology, which allows iterative development, teamwork, and delivery in the shortest possible time. On the other hand, the technological tools used are described, which were: the CodeIgniter framework for application development in PHP, the Bootstrap framework for the creation of responsive web pages and PostgreSQL as a database management system. Finally, the results obtained that consist of two web applications will be explained. One to register, consult and evaluate PQRS. And the other is the tool through which the administration, configuration and monitoring of the PQRS is carried out.
A Novel Full Boundary Element Formulation for Transient Analysis of Elastic Membranes Coupled to Acoustics Fluids
Authors: Narváez-Cruz A J , Useche-Vivero J F , Martínez-Trespalacios J A , Castro-Suarez J R 
Published: June 2020

Abstract
A full time-direct Boundary Element Formulation for the dynamic analysis of elastic membranes coupled to acoustics fluid is presented. The elastic membranes is modeled using the classical linear elastic pre-stretched membrane theory. The acoustic fluid is modeled using the acoustic-wave equation for homogeneous, isotropic, inviscid and irrotational fluids. Elastostatic fundamental solution is used in the boundary element formulation for the elastic membrane. The boundary element formulation for the acoustic fluid is based on the fundamental solution of three dimensional Poisson equation. Domain integrals related to inertial terms and those related with distributed pressure on membrane, were treated using the Dual Reciprocity Boundary Element Method. Fluid-structure coupling equations were established considering the continuity of the normal acceleration of the particles and dynamic pressure at fluid-structure interfaces. The time integration is carried out using the Newmark method. Results obtained shows the accuracy and efficiency of the proposed boundary element formulation.
Improving the stability of Fe0.8Mn1.54Ni0.66O4 NTC thermistor with nano-powders and N2 annealing
Authors: Yu Nam Chol , Pak Il Man , Pak Son Guk , Kim Jin Sim 
Published: June 2020

Abstract
Fe0.8Mn1.54Ni0.66O4 nano-ceramics have been successfully prepared by sol-gel auto combustion. The microstructure and phase of these samples were observed by using SEM and XRD. The diameters of Fe0.8Mn1.54Ni0.66O4 ceramic particles pre-fired at 800 °C range from 52 to 83 nm. The powder sintered at above 1050 °C has the compact and uniform spinel structure. We have investigated the electrical characteristics of these thermistors at different sintering temperatures and concluded that the sample sintered at 1200 °C is sufficient to form the appropriate spinel phase. Moreover, the thermistor annealed for 72 h at 450 ∼ 550 °C in N2 atmosphere has the drift rate of <0.7%.
Clinical potential of pupillary light reflex and heart rate variability parameters as biomarkers for assessing pain relief effects on autonomic function: a prospective longitudinal study
Authors: Ishikawa Masaaki 
Published: June 2020

Abstract

Objective: To investigate the association between subjective pain intensity and objective parameters obtained from two autonomic function tests in a longitudinal study targeting acute pain model in otolaryngology-head and neck region: pupillary light reflex (PLR) and heart rate variability (HRV). Approach: We enrolled 35 patients with acute otolaryngology—head and neck region inflammatory disorders at pre-treatment stage. The acute inflammatory disorders were defined as acute tonsillitis, peritonsillar abscess, acute epiglottitis, acute sinusitis, and deep neck space abscess. Patients underwent a numeric rating scale (NRS) to monitor subjective pain intensity, PLR, and HRV as objective tests at 4 time-points during the follow-up term. As main outcome variables, we used 15 analyzable PLR/HRV parameters. To improve robustness of conclusions about the association between NRS and PLR/HRV parameters, we prepared four linear mixed-effects models (LMMs) including predictor variables such as NRS, sociodemographic factors, and individual variability. And then, we selected the better-fit model based on the lowest Akaike’s information criterion. Main results: NRS significantly decreased due to treatments. In 14 out of 15 parameters, better-fit models were models including not only sociodemographic factors but also individual variability. We observed significant parameter alterations to one unit change of NRS in five PLR and four HRV parameters. Significance: The current study revealed that PLR/HRV parameters can be used as biomarkers reflecting pain relief effects. In addition, the findings suggest the importance of adjusting predictor variables, especially individual variability defined as random effects in LMMs, for obtaining more accurate parameter estimation in the longitudinal study.