bluuebunny/crossref_metadata_2025 huggingface dataset:
La larga vida de la madre de san Pedro
Authors: Sanfilippo Marina
Published: July 2024

This paper intendes to analyse the presence of the ATU 804 type tale in different countries of the western Mediterranean, starting with Spain, to  then focus on the Italian variants, especially those that appear in a series of unpublished sound recordings of great documentary value. The objectives are: through different variants and versions, to study which are the most frequent and stable characteristics in a peculiar protagonist; to establish which other types of tales are usually combined with ATU 804 and to suggest some reasons why the great majority of the people who tell this story are women.
El léxico navarro y su pervivencia más allá de la Edad Media
Authors: Sarasa Echeverría Sergio
Published: July 2024

This article presents a lexical-semantic study of some voices registered in a large inventory of goods written in the 18th century in Tafalla, Navarre (1768). This document offers a list of the goods owned by the married couple of Juan Bautista Alzueta and Estanislada de Echauri, in both their drugstore and their house. The presence of voices with roots in Navarre and Aragon in this inventory shows how dialectal vocabulary surpassed the Middle Age. This way, through the lexical-semantic studies presented, we can define lexicon in a more proper way from different points of view: chronological, dialectal and diastratic.
La evolución de la lexicografía pedagógica desde los años 90 hasta el entorno digital: un análisis de materiales en abierto
Authors: Marco Martínez Lucía
Published: July 2024

The dictionary is a tool with a clear didactic function: explaining the intrinsic characteristics of the terms in a specific context, with the objective that the user can both understand and use words appropriately. However, since the introduction of new technologies and the internet, the way of dealing with lexicographical work has changed, as have the ways of consultation. While dictionaries used to be conceptualized as large paper books, they are now enriched and interconnected online platforms.
The proposed topic in the present text may be of interest to explain the current pedagogical lexicography landscape and to know what open lexicographic resources can be used by students and teachers of Spanish as a mother language (L1) and as a second language (L2) or as a foreign language (ELE); since, thanks to these databases, a representative sample of the language in use is provided.
Translator’s Cognitive Style as a Factor that Determines Translation Strategies in the Target Text (Based on Ukrainian Translations of “Pygmalion” by Bernard Shaw
Authors: ZAHORODNIA Liudmyla ,   Ternopil Volodymyr Hnatiuk National Pedagogical University, Ternopil, Ukraine
Published: July 2024

The article focuses on translator’s cognitive style as an important factor that determines translation strategies and techniques while rendering a source text into a target language. In particular, the study analyses and compares the cognitive styles of Oleksandr Mokrovolskyi and Mykola Pavlov, Ukrainian translators of the play ‘Pygmalion’ by George Bernard Shaw. The relevance of the paper is stipulated by the need to provide theoretical justification for the differences in cognitive styles of the interpreters. The theoretical justification can help to explain interpreters’ successful or unsuccessful translation decisions. The results of the investigation can be used while rendering English texts into Ukrainian. The investigation is carried out using the method of contrastive analysis of the source and target texts as a main one. The comparison between O. Mokrovolskyi’s and M. Pavlov’s cognitive styles are drawn on the basis of the analysis of the translation strategies and techniques used by them while rendering cockney, a social dialect used by people from the East End of London; and interpreting associations of source precedent names and verbal poetic images in the target text. The article proves that translator’s cognitive style manifests itself in translation strategy of keeping or changing the stylistic tone of the original text. M. Pavlov uses stylistically marked vocabulary to render cockney and stylistically neutral lines more often than O. Mokrovolskyi does. The paper notes that the translator’s creative cognitive activity can also manifest itself in using the translation technique of so-called ‘explicative asymmetry’. The mentioned technique involves using target lexical units that are not considered to be equivalents for source words in order to reveal the author’s ideas better. It should be mentioned that the ‘explicative asymmetry’ technique usually causes conceptual shift. The investigation proves that while rendering English precedent names into Ukrainian M. Pavlov tends to use transformations that cause conceptual shift whereas O. Mokrovolskyi does not use the technique of explicative asymmetry very often. The author expresses the opinion that the technique of ‘explicative asymmetry’ helps to interpret associations of source precedent names in the target text. While rendering English idioms into Ukrainian both the translators use the ‘explicative asymmetry’ technique that causes conceptual shift to reveal the author’s ideas better.
Voracious and Heuristic Algorithms: A focus on the Minimum Path Problem
Authors: Lasso Cardona Luis Adrián , Franco Ocampo Diego Fernando , Agudelo Acevedo Alexander
Published: July 2024

Introduction— The problem of the shortest route or minimum cost route, has been one of the topics most studied by areas of knowledge such as Operations Research, Computer Science and Decision, Telecommunications, Plant Distribution, Planning of Projects, among others, searching, for example: optimize and reduce the costs that represent the distribution of goods, obtain the minimum amount of time necessary to complete a project, or calculate the shortest possible route between computers connected to a network.
Objective— We will study the behavior of three voracious algorithms that allow us to calculate the minimum cost route between two points (initial state and objective state) in a weighted graph and with heuristics.
Methodology— Was implemented in Java, and the Greedy, A* and Dijkstra algorithms were adjusted to the problem in question. Subsequently, two instance cases were designed, one negative and one positive.
Results— In the negative instance results the heuristic of the node was modified to allow the selected algorithm to escape from local optima and thus obtain a complete result, that is to say reach the objective state, which, in some cases, will not necessarily be the most optimal result.
Conclusions— By comparing the three algorithms, it was determined that the Dijkstra algorithm always yields complete and optimal results. For its part, Greedy and A*, need heuristics to reach a complete result, but not optimal.
Physicochemical and functional characterization of trupillo flour (Prosopis juliflora (Sw.) DC) and its inclusion in a food matrix
Authors: Franco Sarmiento Andrea Carolina , Ruz-Echavarría Wilson Javier , Torregroza Espinosa Angélica María , Martínez Mera Eliana Andrea , Torregroza Espinosa Ana Carolina
Published: July 2024

Introduction: The high protein content has made legumes a raw material of interest in the formulation of different agro-industrial products; the trupillo (Prosopis juliflora) tree is an easily accessible, multipurpose, wild legume that can be used in all its composition, has a high protein value and little commercial level, which is currently being wasted as it is mistakenly considered a weed and that It could be seen as a new alternative that helps in the potentialization of the food sector.
Objective: This research aims to functionally characterize trupillo flour (Prosopis juliflora), obtained from leaves and seeds, to include it in a food matrix as a protein extender.
Methodology: The experimental design for this research required three phases, i) obtaining, bromatological and functional characterization of leaf flour and trupillo seeds, ii) standardization of formulations for artisan sausages using trupillo flour as a protein source, and iii) bromatological and sensory characterization of the processed sausages.
Results: It was found that the flours obtained preserved the characteristic odor and color of each raw material. Particularly, the seed flour presented bromatologically and functionally better protein contents (27.7%), ash (8.04%), swelling capacity (16.7 ml water / g sample), water absorption (7.89 g water / g sample) and water retention capacity (27.9 g water/g sample), for which it was selected to be included in the sausages. In the three formulations made (C, CT and T), there were variations in the color and texture of the sausages, with Formulation T standing out for presenting higher protein content (13.7%). However, consumers preferred Formulation C.
Conclusions: These results allow to propose the inclusion of sausage with trupillo flour in the human diet as an alternative to traditional products.
Determinación de la estabilidad de la mezcla de etanol con naftas mediante la medición de sus propiedades dieléctricas y refractométricas
Authors: García Reina Francisco
Published: July 2024

Introducción: El uso de las mezclas de etanol con gasolina o nafta tiene el problema de la tendencia natural de esta mezcla a separarse en dos fases, ya que el etanol es una sustancia formada por moléculas polares, mientras que en las naftas son apolares. La completa miscibilidad del etanol en las naftas es fuertemente dependiente de las interacciones moleculares entre estas moléculas de diferentes polaridades y la determinación de la constante dieléctrica y el índice de refracción da una valiosa información de estas interacciones.
Objetivo: Determinar la estabilidad de las mezclas de etanol con naftas usando tecnologías de medición de la constante dieléctrica y el índice de refracción.
Metodología: Para esto se usó un metro LCR digital con celdas capacitivas cilíndricas y un refractómetro de Abbe, con los que se pueden hacer estas mediciones con gran precisión y permiten caracterizar a las mezclas de etanol con hidrocarburos en todo el rango de aplicaciones prácticas.
Resultados: Fueron obtenidos con mezclas de etanol anhidro y tres naftas cubanas: la nafta reformada (NR), la nafta virgen ligera (NVL) y la nafta virgen pesada (NVP), las cuales conforman los distintos tipos de gasolina usadas en Cuba. Los resultados experimentales se correlacionan con un estudio termodinámico de la estabilidad de las mezclas, usando la energía libre de Gibbs.
Conclusiones: En las mezclas estudiadas queda claro que las naftas y gasolinas derivadas de la NR son más estables que las NVL y NVP, además se demuestra que hasta una concentración de 15 % de etanol la entalpía de vaporización se mantiene por debajo de la gasolina, por lo que en el proceso de evaporación y combustión el etanol añadido a la mezcla no disminuye la eficiencia de la combustión por este concepto.
Arquitectura de Integración para Servicios y Soluciones Smart Campus
Authors: Pastrana Pardo Manuel Alejandro , Cifuentes Calderón Fernando Andrés , Ordoñez Eraso Hugo Armando
Published: July 2024

Introducción: La Institución Universitaria Antonio José Camacho (UNIAJC) ha identificado a través del proyecto de investigación Ecosistema Smart campus, que existen problemas complejos de comunicación entre aplicaciones construidas como silos, donde la redundancia de información es común y los procesos que soportan requieren refinamiento. Esta problemática es bastante común, no solo para la UNIAJC, sino en general para cualquier universidad. La razón, es que a medida que evolucionan las instituciones, los aplicativos que soportan sus procesos son construidos únicamente visionando dar solución a una necesidad específica, sin contar con todo el contexto de soluciones que preexisten, muchas veces por la premura de resolver. Las arquitecturas orientadas a servicios (SOA por sus siglas en inglés), tienen como objetivo, resolver este tipo de situaciones de forma gradual, debido a la dificultad técnica de las implementaciones. Este trabajo se enfoca en exponer la definición de la arquitectura de integración que plantea Smart Campus para la UNIAJC, estableciendo la forma en que interactuarán los servicios y teniendo en cuenta las limitaciones de infraestructura actuales.
Objetivo: Definir una arquitectura de integración que permita el fácil escalamiento y buen desempeño de los diversos mecanismos que  comunican las aplicaciones que cohabitan en la institución Universitaria Antonio José Camacho.
Metodología: Se aborda el diseño arquitectural de la solución, partiendo del enfoque general, donde se describe las necesidades a resolver mediante el patrón Enterprise Service Bus (ESB) y se representan por medio de un diagrama de componentes. Luego se amplía la información hasta lograr un enfoque detallado. En este último, se selecciona el tipo de servicio a construir (SOAP o REST) y se expone su arquitectura. Por último, mediante ATAM (Architecture Tradeoff Analysis Method), se comprueba la efectividad de la solución.
Resultados: La definición de una Arquitectura de integración de aplicaciones basado en SOA, detallando la arquitectura de software para la construcción de los servicios web de la solución. Esto, teniendo en cuenta las limitaciones de infraestructura y recursos de la Institución para lograr un rendimiento de entre 500 p/s a 1000 p/s (peticiones por segundo) que evite problemas de hilos o bloqueo de recursos.
Conclusiones: SOA permite dar solución a problemas de comunicación e integración de aplicaciones, tanto en entornos empresariales como educativos, incrementando la mantenibilidad, escalabilidad y reutilización de los sistemas y componentes desarrollados bajo esta arquitectura. Por otro lado, el modelo para la revisión de la arquitectura ATAM facilitó la definición y evaluación de la arquitectura, logrando tener una comprensión del entorno actual, la identificación de los atributos de calidad, las pruebas y resultados esperados.
Mathematical model for quay crane assignment problem with tidal constraints
Authors: Arango Pastrana Carlos Alberto , Vidales Velez Cristhian , Molina Agudelo Jhon Edward , Bravo Bastidas Juan José , Vargas Acuña Leidy Carolina
Published: July 2024

Objetive: The operations associated with loading and unloading of container ships demand the use of quay cranes that represent one of the most expensive resources of a maritime terminal. Therefore, the assignment of cranes to ships must be optimized. This article proposes a mathematical model to optimize the decision of assignment of cranes to ships, considering the behavior of tides, which is a not commonly considered factor in the scientific literature for similar problems.
Metodology: A mixed integer linear mathematical model was designed and tested for the actual case of a container terminal in Buenaventura-Colombia with satisfactory results.
Results: With the available capacity the model allows to mobilize up to 2800 containers per half day, while the number of containers per ship in the real case does not exceed 2000 units.
Conclusions: The consideration of tides, combined with downtime penalty cost can allow using smaller number of cranes with savings in energy cost.
Fracking as a guarantee of Energy Security in countries with low conventional oil reserves
Authors: Ortega Ramirez Angie Tatiana , Marin Maldonado Diego Fernando
Published: July 2024

Introduction— Fracking is one of the most recent techniques presented by the hydrocarbon industry to guarantee the extraction of oil from non-conventional fields and thus maintain the energy security of many countries such as the United States, China, Canada, and even is one of the potential practices in Colombia. Although it is a promising technique because of its advanced level of engineering, its impacts, and environmental effects are today a subject of debate partly due to limited information and limited detailed research on the consequences.
Objective— This article presents the generalities of the technique, a historical timeline, advantages and disadvantages of the implementation, successful cases, and the implications on the environment.
Methodology— This is achieved through a review and classification of information from studies and research developed in the world on the named technique.
Results— The advantages are clear: increase in proven reserves, energy independence, increased employment, economic development, among others.
Conclusions— There are disadvantages such as excessive use of water, use of toxic additives, generation of earthquakes, and negative environmental effects. All of the above is related to previous investigations carried out with fracking.
Propiedades fisicomecánicas, desempeño y durabilidad de morteros geopoliméricos a base de puzolana natural tipo piedra pómez
Authors: Álvarez Mantilla Hernando , Rios Reyes Carlos Alberto , Castellanos Alarcón Oscar Mauricio
Published: July 2024

Introducción: En los últimos años, los investigadores han estado evaluando el uso potencial de una amplia gama de materias primas en la producción de geopolímeros. Este trabajo reporta la conveniencia de utilizar una puzolana natural tipo piedra pómez de Paipa (Colombia) como material de sustitución del cemento (100% de puzolana) en la producción de morteros geopoliméricos.  
Objetivo: El objetivo de esta investigación se enfoca en el uso de la piedra pómez como materia prima en la producción de cementos geopoliméricos con el fin de establecer su comportamiento mecánico y durabilidad.
Metodología: Se utilizaron cemento Portland tipo I, puzolana natural y arena como materiales de partida en la preparación de morteros geopoliméricos a partir de la activación alcalina de puzolana natural. Los morteros geopoliméricos fueron preparados y ensayados según las normas del Instituto Colombiano de Normas Técnicas e Instituto Nacional de Vías.  
Resultados: Los ensayos en geopolímeros ofrecen resultados alentadores y muestran un buen potencial en la preparación de cemento con puzolana exhibiendo una adecuada durabilidad y resistencia a la compresión relativamente alta a los 28 días para ser aceptado en el desarrollo de nuevos materiales cementantes.
Conclusiones: El uso de puzolana natural en la producción de geopolímeros se vuelve importante por su papel en la durabilidad del mortero en condiciones ambientales extremas y agresivas.
Algoritmo de Optimización de Mapeo de Media Varianza Aplicado al Despacho Óptimo de Potencia Reactiva
Authors: Londoño Tamayo Daniel Camilo , López Lezama Jesús María , Villa Acevedo Walter Mauricio
Published: July 2024

Introducción: El problema del despacho óptimo de potencia reactiva (DOPR) consiste en encontrar la configuración óptima de diferentes recursos de potencia reactiva para minimizar las pérdidas de potencia del sistema. El DOPR es un problema complejo de optimización combinatorial que involucra variables discretas y continuas, así como una función objetivo no lineal y restricciones no lineales.  
Objetivo: En este artículo se busca comparar el desempeño del algoritmo de optimización de mapeo de media varianza (MVMO, por sus siglas en inglés) con otras técnicas reportadas en la literatura especializada aplicadas a la solución del DOPR.
Metodología: En el algoritmo MVMO se aplican dos enfoques diferentes de manejo de restricciones: penalización convencional de las desviaciones de las soluciones factibles y penalización por medio del producto de subfunciones que sirve para identificar cuándo una solución es óptima y factible. Se realizan simulaciones en sistemas de prueba IEEE de 30 y  57 barras.
Conclusiones: El algoritmo MVMO es efectivo para solucionar el DOPR. Los resultados evidencian que el algoritmo MVMO supera o iguala a varias técnicas reportadas en la literatura técnica en la calidad de soluciones. El manejo alternativo de restricciones propuesto para el  MVMO  reduce el tiempo de cálculo y garantiza tanto factibilidad como optimalidad de las soluciones encontradas.
Refrigeración por absorción de calor con energías renovables: Un estudio de caso con energía solar fotovoltaica y biogás en Córdoba, Colombia
Authors: Mendoza Fandiño Jorge Mario , Rhenals Julio Jesús David , Ávila Gómez Adrián Enrique , Martínez Guarín Arnold Rafael , De la Vega González Taylor de Jesús , Durango Padilla Elías Ricardo
Published: July 2024

Introducción: la generación de energía por medio de fuentes renovables ha ganado importancia en los campos de investigación debido a los efectos adversos que generan los combustibles fósiles sobre el ambiente, en este contexto, generación de energía por medio de biomasa presenta grandes ventajas debido a su alto potencial y bajo costo.
Objetivo: El objetivo fue evaluar la operación de un equipo de refrigeración por absorción de calor usando energía solar fotovoltaica y biogás como fuentes de energías renovables.
Metodología: Se realizó una caracterización energética de las fuentes implementadas considerando medidas de radiación solar en la ciudad de Montería y El poder Calorífico del biogás. Así mismo, se realizaron pruebas en el equipo disponiendo en su interior 1 litro de agua. Finalmente se calculó el coeficiente de operación.
Resultados: los resultados obtenidos muestran que la operación del equipo es de 8 horas aproximadamente, La composición química del biogás entregó 58% de metano y 42% de dióxido de carbono, alcanzando un poder calorífico de 23.05 MJ/kg. Por ultimo los coeficientes de operación obtenidos fueron de 0.58; 0.08; 0.27 y 0.07 para energía eléctrica, GLP, energía solar y biogás respectivamente. 
Conclusiones: Existe un potencial energético importante en cuanto a la implementación de la Energía solar y biogás para este tipo de procesos de generación de frío, cumpliendo así con el objetivo principal del proyecto, Comprobando así que si es posible implementar las energías renovables en el sistema de refrigeración por absorción.
Chromium and Zinc removal from synthetic industrial wastewater in pilot-scale constructed wetlands planted with Cyperus odoratus L.
Authors: De Moya Sánchez Ángel , Casierra Martínez Henry , Vargas Ramírez Ximena , Caselles Osorio Aracelly
Published: July 2024

Introduction: Constructed wetlands (CWs) are a recognized technology to treat industrial wastewater.
Objective: A pilot system of two horizontal subsurface flow CWs was used to remove Cr and Zn from industrial synthetic wastewater.
Method: The study was carried out at Universidad del Atlántico in Barranquilla, Colombia. Two containers of 0.375 m2 were filled with a gravel bed (~10 mm and 40% of porosity), and a 0.3 m water column. One container was planted with Cyperus odoratus L. and another without plants was used as a control.
Results:  The removal efficiency of Cr and Zn was 93% and 96% in the CW planted, respectively, and 67% and 98% removal were obtained in the unplanted system with statistical differences (P<0,05). The observed difference in biomass production (0.1 and 0.6 kg/m2) could be related to seasonal weather that could have favored the growth of the plant. C. odoratus reached a Translocation Factor greater than 1.5 for Cr and Zn, which is greater than that, reported by others for Cyperus species. However, a Bioconcentration Factor > 13.6 for Zn and < 7.7 for Cr indicated that C. odoratus is an accumulator species for Cr and Zn. Sorption metal processes in gravel can be occurring due to the high removal efficiency of Zn in unplanted systems
Conclusions:  These results show that C. odoratus could be recommended for use in constructed wetlands technology due to fast-growing and absorption and translocation heavy metals capacity.
Design of a Windmill for the Water Pumping in a Sprinkle Irrigation System
Authors: Brown Manrique Oscar , Méndez Jurjo Néstor , Garcia Reina Francisco
Published: July 2024

Introduction: The use of the wind energy with practical ends is referred from old times; however at the present time it recovers validity for the necessity of finding alternative sources of energy in front of the conventional fossil fuel that is more and more scarce and it causes serious problems of environmental contamination.  
Objective: Design a windmill for the extraction of water in a simple and efficient way, from the principles of a multiblades windmill and the use of materials recovered in the locality that allows the irrigation of the garlic cultivation with sprinkle irrigation system at the minimum possible cost.  
Methodology: Different methodologies like the experience of the producers, established technical approaches for the selection of the relationship of speeds diameter of the rotor, coefficient of sustentation; haulage coefficient and attack angle were used. The analytic method was used for the calculation of the coefficient of solidity, the cord angles, the coefficient of power, the useful power, real flow, hydraulic power of the pump, total force in the piston, centrifugal force, sustentation force, drag force and the starting torque generated in a windmill. 
Results: They were obtained starting from the wind speeds registered in the locality during 30 years of systematic studies and the defined parameters and calculated for the wind rotor and the volumetric pump.  It was possible to design a windmill with the mechanical and hydraulics characteristics appropriate to be used in the agriculture. 
Conclusions: The investigation demonstrated that the design of the windmill allows to complete the demands of the pumping of water for the irrigation system when guaranteeing a real flow of 0,17 L s-1 and a volume of water of 0,30 L displaced by the pump in each revolution of the wind rotor. The power generated by the wind rotor satisfies the power required by the pump.
Contribution of each leg in the static postural stability of unilateral transtibial amputees, a study with Information Theory
Authors: Luengas-C. Lely A. , Toloza Daissy Carola , Wanumen Silva Luis Felipe
Published: July 2024

Introduction: Transtibial amputees tend to isolate themselves because they lack confidence in performing daily tasks; rehabilitation processes such as the use of prostheses are carried out for their social reintegration, where postural stability must be ensured, and activities allowed in diverse contexts.
Objective: Verify the contribution of each leg and direction (anterior/posterior and medial/lateral) of the center of pressure (CoP) in the static postural stability of unilateral transtibial amputees due to landmines using information theory.
Methodology: A quantitative experimental design was applied to examine the displacement and velocity of the CoP using infometric measurements in nine transtibial amputees, and the non-parametric U Mann-Whitney test was applied to recognize statistically notable differences (p <0.05) between each leg.
Results: There are statistically notable differences between the legs in the variables of displacement and velocity. Each leg contributes differently to the control of the static bipedal posture, and their behavior in the directions of movement of the CoP differs from each other, but they work together to generate compensation strategies that allow maintaining stability. 
Conclusions: The use of information theory made it possible to evaluate stability objectively, without specifying the kind of relationship between this and the input variables, which favored the recognition of the CoP shift as its best discriminant in comparison with velocity. Transtibial amputees control static bipedal posture with the non-amputated leg to compensate for the loss of lower leg afferents and efferents due to the amputation. The results demonstrate the suitability of using information theory in the evaluation of lateralized postural control in pathological conditions.
Identificación de los principales indicadores de gestión logística utilizados por pequeñas empresas proveedoras del sector petrolero
Authors: González Camargo Carlos Alberto , Mosquera Cicero Diana Marcela
Published: July 2024

Introducción: los planes de mejoramiento logísticos se basan en actividades monitoreadas por indicadores que se asocian al ahorro en costos logísticos. Este trabajo se realizó a partir de una muestra de 44 empresas en seis ciudades de Colombia participantes de un proyecto realizado para el sector petrolero.
Objetivo: identificar los indicadores más utilizados por las pequeñas empresas, que permiten lograr el mejoramiento empresarial, representado en ahorros en costos logísticos.
Metodología:  a partir de la información del proyecto “Fortalecimiento de las operaciones logísticas de las empresas proveedoras de bienes”, se normalizó la base de datos,  se realizó el análisis estadístico descriptivo, posteriormente el análisis multivariado encontrando relaciones entre áreas e indicadores logísticos, mediante el análisis de clúster y el análisis de componentes, identificando el grupo de indicadores logísticos más utilizados por los empresarios para el mejoramiento empresarial.
Resultados: como resultado se obtuvo que el área de almacenamiento es la que más representa ahorro en costos logísticos, la ciudad de Orito fue la que más ahorros tuvo, la variación en ahorro fue heterogénea.
Conclusiones: la variable de ahorro en costos logísticos, discriminada por área, se concentra en el área de almacenamiento. El grupo de indicadores principales del área de almacenamiento con los cuales se puede realizar control y seguimiento son exactitud en inventarios, rotación de inventarios y costo de unidad almacenada.
On-line method for optimal tuning of PID controllers using standard OPC interface
Authors: Riaño Jaimes Cristhian Ivan , Diaz Rodriguez Jorge Luis , Mejía Bugallo Diego Armando
Published: July 2024

Introduction− The controlled PID is the most widely used mathematical algorithm as a regulatory control strategy in industrial environments. The applications are varied; however, its answer depends on the proper calculation of its three parameters: the proportional, the derivative, and the integral. Analytical tuning and experimental methods solve the problem, but new tuning possibilities are now enabled within the digital and process integration context.
Objective− Automatically and remotely obtain the optimal parameters of the PID controller, taking advantage of an online connection via the OPC communication protocol to analyze the transient response of the system.
Methodology− The study is carried out in three main phases; it begins with a PD3 SMAR thermal process with connection via OPC; in this phase, the mathematical model of the process is built analytically based on fundamental laws. In the second phase, using an analytical tuning method, the PID control architecture is created on which the online experimentation is carried out. In the third phase, the genetic algorithms for automatic tuning are implemented, extracting performance measures from the PID controller through the transient response of the process and optimally determining the values for the proportional, derivative, and integral parameters.
Results− The automatic tuning method was tested with two properly instrumented industrial processes. The potential for application can be seen due to its good result and because it does not require specific mathematical knowledge compared to conventional tuning methods.
Conclusions− The automatic tuning method can be used remotely to calculate the optimal parameters of a PID controller. The parameters are calculated from the transient response and the definition of design criteria adaptable to any need for control, response, and process.
An extension to iStar framework as alternative to support design decisions in the task analysis performed in the Human Computer Interaction Area (HCI)
Authors: Suescún-Monsalve Elizabeth , Pardo-Calvache Cesar Jesús
Published: July 2024

Introduction— The goal of this work is to present i* framework as alternative to support design decisions in the Human Computer Interaction Area (HCI), mainly, in the process of task analysis. We show i* framework a modeling language suitable for an early phase of software system modeling to understand the problem domain, also, that provides methods to represent tasks, as well as support design decisions the development that satisfies the process requirements from the beginning until the end. To achieve our goal, approaches addressed to analyze notations aimed at task analysis and their representation. Finally, we present suggestions for improvement in the i* framework through a proposed extension for refining task model, instantiating examples and justifying our proposal through peer review.
Modelo de Programación Entera Mixta para localizar plataformas logísticas en el corredor férreo del Atlántico en Colombia
Authors: Arango López Julian Andres , Rocha González Jair Eduardo , Páez-Sánchez Carlos Andrés
Published: July 2024

Introducción y Objetivo— El proyecto de investigación tiene como fin identificar una propuesta de solución al problema de ubicación de plataformas logísticas a través del corredor férreo del atlántico utilizando el modelamiento matemático Facility Location Problem (FLP) identificando como caso de solución la instalación de plataformas logísticas o hubs con el uso del método Hub Location Problem.
Metodología y Resultados— En el desarrollo de la investigación se formula un modelo matemático de programación entera mixta el cual se basa en la metodología Hub location problem, la cual busca generar la ubicación de plataformas logísticas evaluando puntos estratégicos en el corredor férreo del Atlántico y asignado estos como hubs de tal manera que con la articulación multimodal del país se minimicen los tiempos de transporte y maximizando las utilidades generadas por el transporte de carga, esto se logra siguiendo la metodología del trabajo, y articulando los diferentes modos de transporte de carga apoyando a la multimodalidad a la que el país apuesta en el Consejo nacional de Política económica y social (CONPES) 3547 para el año 2020.
Conclusiones— Por último, se presenta una comparación donde se contrasta la situación actual de transporte de carga del país con la situación propuesta implementando la estrategia del multimodalismo y así identificar cuál de las dos estrategias permite un avance en el transporte de carga del país.
Importance of Rare Earth Elements in Modern Society and their Potential Source in Coal Ashes
Authors: Crissien Borrero Tito Jose , Stringuini Yasmin Mariana , Hernández Palma Hugo Gaspar  , Dalmora Adilson
Published: July 2024

Introduction: Rare Earth Elements (REEs) are crucial for advanced technologies in modern society, ranging from electronics to renewable energy and defense. Their increasing demand in critical industries underscores the need for a consistent and sustainable supply. Historically extracted from REE-rich minerals such as bastnäsite and monazite, the search for alternative sources has gained prominence, among these, coal ashes stand out, produced by burning coal to generate energy, ashes contain REEs in relatively low concentrations but with significant potential due to their massive global volume. The importance of ensuring the resilience of the REE supply chain has driven research to extract these elements from coal ashes, diversifying sources and reducing reliance on specific minerals. As technologies advance and REE applications expand, the ability to recover them from unconventional sources like coal ashes could have a sustainable impact on our societies. Research into the extraction and utilization of REEs from ashes is in progress and may enhance supply security. This study highlights the global importance of finding alternative sources of REE, such as coal ash, emphasizing the need to ensure a consistent and sustainable supply of these essential elements.
Guía para el uso correcto de la gramática y ortografía del español
Authors: Coronel Montaguth Yessy Lorena ,   Universidad Libre
Published: July 2024

Esta guía presenta consejos, pautas gramaticales y ortográficas en pro a una redacción coherente y cohesiva cumpliendo con las normas básicas del español protegidas por la Real Academia de la Lengua (RAE). El documento se ha elaborado como una herramienta de apoyo conceptual, dirigido a los estudiantes de Ingeniería, teniendo en cuenta las falencias que se identifican en el aula de clase al producir textos continuos y discontinuos en los jóvenes universitarios, con el fin de que este documento se convierta en material de consulta permanente en la vida estudiantil y profesional. Este material sirve de apoyo a la asignatura de Competencias de Aprendizaje y Comunicación, de manera que se organizó en cuatro capítulos titulados: El tremendo significado de la coma; Las tildes hacen la diferencia; Llegó la mayúscula para quedarse y Conéctate con la coherencia y cohesión en un texto argumentativo. Al finalizar cada capítulo encontrará un taller para poner en práctica lo aprendido.
Learning through Collaboration
Authors: Perrotti Carmine , Longo Nicholas V. , Plaut Julie L. , Bush Adam
Published: July 2024

This article highlights the nascent efforts between College Unbound, Brown University, and Providence College—three very different types of institutions in Providence, Rhode Island—to foster cross-institutional capacity for place-based community engagement. By collectively engaging our institutions, we experimented with what collaboration around community engagement might look like within our local context. In this article, we share our approach and reflections in working to cultivate a place-based collaboration that centers community, along with limitations, lessons learned, and next steps. Through our efforts, we situate cross-institutional collaborations as an opportunity for more sustained, collaborative, and transformative work within higher education community engagement.
Student Support and Retention
Authors: Collier-Tenison Shannon , Polk-Hampton Mia
Published: July 2024

Traditional student support services offered by universities are broad and varied; however, many of these fall under either student or academic affairs and are located centrally on campus. Offering a decentralized, college-specific model of student support and retention that partners with both academic and student affairs allows for a holistic, integrated approach to student resources that is easily accessed within a student’s own academic area. UA Little Rock has implemented this innovative model by housing a licensed social worker in each main campus college. These social workers provide case management services ranging from triage of at-risk students to coordination of on-campus and community resources. Each social worker is also able to provide a limited number of small micro-grants as emergency funds. Primary goals of this initiative include increased student use of the case management services, increased faculty referrals, improved student retention, evaluation of interventions, and student satisfaction. Pilot evaluation data indicates that a diverse population of students across multiple disciplines are utilizing these services and that retention rates for students receiving case management services differs based on their presenting issue(s). To support ongoing evaluation of services, there is a need to more clearly standardize data collection without disruption to practice.
Exploring the interplay between diet and oral inflammation
Authors: Alghamdi Rahaf A. , Alzamil Hala A. , Alzamil Haya A. , Alotaibi Rawan Y. , Albishi Sara M. , Sallam Amro M. , Alhufaiyan Nasser S. , Alahdal Esraa M. , Baeesa Dania A. , Aljohani Sara M.
Published: July 2024

The relationship between diet and oral inflammation is intricate and significant, influencing overall periodontal health through various mechanisms. Nutritional factors such as vitamins, minerals, and bioactive compounds play pivotal roles in either exacerbating or mitigating inflammatory processes in the oral cavity. Vitamin C, essential for collagen synthesis and tissue repair, along with calcium, critical for bone health, are key nutrients that support periodontal health by reducing susceptibility to gingival inflammation and periodontitis. Polyphenols, abundant in fruits, vegetables, and tea, exhibit strong anti-inflammatory properties that protect against oxidative stress and inflammation in oral tissues. Dietary patterns also have a profound impact on oral health. The Mediterranean diet, rich in fruits, vegetables, whole grains, and healthy fats, has been associated with lower levels of periodontal inflammation due to its high content of antioxidants and polyphenols. Conversely, the Western diet, characterized by high consumption of refined carbohydrates, sugars, and saturated fats, is linked to increased periodontal disease risk, promoting hyperglycemia and insulin resistance that exacerbate inflammatory responses. Vegetarian and plant-based diets, which emphasize the intake of anti-inflammatory and antioxidant-rich foods, are associated with better periodontal health markers, including lower bleeding on probing and reduced periodontal pocket depth. Antioxidants and anti-inflammatory nutrients are crucial in combating oxidative stress and reducing inflammation, essential for maintaining oral health. Vitamin E, coenzyme Q10, omega-3 fatty acids, and green tea polyphenols are particularly beneficial, reducing oxidative damage and inflammation in periodontal tissues. Dietary strategies incorporating these nutrients effectively support oral health and can be part of a comprehensive approach to preventing and managing periodontal disease. Diet plays a critical role in oral health, influencing periodontal inflammation through specific nutrients and overall dietary patterns. Emphasizing the intake of antioxidant-rich and anti-inflammatory foods, while minimizing harmful dietary components, is fundamental in promoting and maintaining periodontal health.
Hydrogel dressings on neurotrophic keratitis in an experimental animal model
Authors: Xia Hua-Qin ,   Department of Ophthalmology, Peking University Third Hospital, Beijing 100191, China, Song Yi-Fan , Li Xue-Min , Tian Yan-Jie ,   Department of Ophthalmology, Peking University Third Hospital, Beijing 100191, China,   Department of Ophthalmology, Peking University Third Hospital, Beijing 100191, China; Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Peking University Third Hospital, Beijing 100191, China.,   Department of Ophthalmology, Peking University Third Hospital, Beijing 100191, China; Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Peking University Third Hospital, Beijing 100191, China.
Published: July 2024

AIM: To investigate the therapeutic effects of hydrogel dressings on neurotrophic keratitis in rats.
METHODS: Male Wistar rats, aged 42–56d, were randomly divided into control, experimental, and treatment groups, each consisting of five rats. The experimental and treatment groups underwent neurotrophic keratitis modeling in both eyes. After successful modeling, biomedical hydrogels formed with polyvinyl alcohol and polyvinyl pyrrolidone were used in treatment group for 7d. Ocular irritation response and keratitis index scores, Schirmer’s test, tear film break-up time (BUT), sodium fluorescein staining, and hematoxylin and eosin (HE) staining were used to evaluate the effectiveness of the treatment.
RESULTS: The neurotrophic keratitis model was successfully established in rats with severe ophthalmic nerve injury, characterized by keratitis, ocular irritation, reduced tear secretion measured by decreased BUT and Schirmer test values, corneal epithelial loss, and disorganized collagen fibers in the stromal layer. Following treatment with hydrogel dressings, significant improvements were observed in keratitis scores and ocular irritation symptoms in model eyes. Although the recovery of tear secretion, as measured by the Schirmer’s test, did not show statistical differences, BUT was significantly prolonged. Fluorescein staining confirmed a reduction in the extent of corneal epithelial loss after treatment. HE staining revealed the restoration of the structural disorder in both the epithelial and stromal layers to a certain extent.
CONCLUSION: Hydrogel dressing reduces ocular surface irritation, improves tear film stability, and promotes the repair and restoration of damaged epithelial cells by maintaining a moist and clean environment on the ocular surface in the rat model.
Development of an equivalent model of a damping elastic ring considering elastic contact on bulges
Authors: Cheng Luo , Novikov Dmitriy K. , Diligenskiy Dmitriy S.
Published: July 2024

The study introduces a model of an elastic ring that takes into account contact conditions on bulges. The model represents the elastic damping ring as a series of straight beams connected by hinges. The methodology proposed herein calculates the average weighted stiffness of sections of the ring containing bulges and a smooth elastic part, which is essential for determining the overall stiffness of the entire ring.
Formulating Policies for Halal Tourism in Indonesia Based on Islamic Law
Authors: Yudha Trishananto  , Fuad Mas’ud  , Setiawan  , Ulfah Nurul Fauziah
Published: July 2024

This research aims to examine the implementation of Islamic law, the role of ulama’s thoughts and authority, and the appropriateness of government policies on halal tourism in Indonesia. A qualitative method was employed to gather primary data, specifically through a one-day symposium on “Halal Tourism and Hospitality” held by Ministry of Tourism and Creative Economy in Semarang, Indonesia. This symposium invited 100 participants from various sectors, including the tourism and hospitality industry, government representatives, community leaders, and politicians. The data underwent content analysis utilising word cloud and narrative analysis for the preliminary and Leximancer and narrative analysis for the panel discussion. The study shows that the implementation of Islamic law in formulating halal tourism policies in Indonesia involves several steps and practices aimed at ensuring compliance with Islamic principles within the tourism industry. Furthermore, the thoughts and authority of ulama play a pivotal role in shaping and influencing policies related to halal tourism. Lastly, the Indonesian government has established policies consistent with Islamic principles, such as regulations on the management and provision of halal food, the development of family-friendly tourist destinations, the promotion of spiritual tourism, the prohibition of practices and services conflicting with sharia, the development of sharia-based ecotourism, and the utilisation of Islamic language and symbols in tourism promotion. The study contributes to identifying gaps and opportunities for further incorporating Islamic principles into tourism policies.
Procesos de acorazamiento en un río tropical regulado, el caso del río La Miel
Authors: Rios Arboleda Juan Daniel , Vargas Luna Andrés
Published: July 2024

En el presente estudio se analiza el proceso de acorazamiento (blindaje) que se presenta en el río La Miel (Colombia), un importante río tropical regulado y fuertemente modificado en sus regímenes hidrológicos, hidráulicos y sedimentológicos. Para confirmar la hipótesis del acorazamiento se emplean tres enfoques diferentes: 1) verificación cualitativa del proceso de acorazamiento realizada durante un recorrido de campo, 2) verificación cuantitativa del acorazamiento empleando el criterio definido por Little y Meyer (1976) para la desviación geométrica estándar de la granulometría del lecho (determinada con el software BASEGRAIN) y 3) análisis de los registros de carga de sedimentos en suspensión y de fondo en las estaciones de monitorio hidrosedimentológico. Los resultados indican que el río La Miel efectivamente se encuentra acorazado según la evidencia de campo y la marcada disminución en la carga de sedimentos de fondo, además, se identifica que el proceso de acorazamiento se ha dado en escalas de tiempo más cortas que las reportadas en la literatura para ríos extratropicales, debido al exceso de capacidad de transporte producido por el aumento sistemático de los caudales mínimos luego de la regulación y los transvases de los ríos Guarinó y Manso. Por otro lado, podemos indicar que efectivamente existe un umbral de caudal importante (234 m3/s) el cual se debe superar para que se rompa la coraza y se registre transporte de la carga de fondo.