bluuebunny/crossref_metadata_2025_split huggingface dataset:
Arquitectura FPGA para Simulación de Aprovisionamiento de Alimentos en Colonias de Hormigas Artificiales
Authors: Rodríguez Rodríguez Cristian David , Melgarejo Rey Miguel Alberto 
Published: May 2020

Este artículo presenta algunos resultados en relación con el diseño y la implementación de una arquitectura que soporta una plataforma experimental para simular el proceso de alimentación de las colonias de hormigas. Los algoritmos Ant-system y Ant-Cycle modelan el comportamiento de las hormigas. La plataforma permite cambiar parámetros como la cantidad y la velocidad de las hormigas, la cantidad y ubicación de los alimentos y el radio y la frecuencia de difusión de la feromona de las hormigas. Estos parámetros se visualizan a través de una interfaz VGA. La implementación de hardware se lleva a cabo sobre tecnología FPGA de Xilinx©. La teoría detrás de este diseño considera que los comportamientos complejos pueden surgir de sistemas con una estructura simple . Este trabajo se enfrenta a la pregunta acerca de la complejidad global emergente de un sistema cuya complejidad estructural es mínima o inexistente.
Evaluación del Impacto de la Generación Distribuida mediante Índices Normalizados con base en la Normatividad Colombiana y Estándares IEEE
Authors: González Herrera Diego , Luna Russi Gustavo , Rivas Trujillo Edwin 
Published: May 2020

Se presenta una breve revisión de la literatura científica referente a índices normalizados en calidad de potencia y el marco regulatorio colombiano; el trabajo fue motivado por el reto de otros autores de plantear índices para evaluar el impacto de las perturbaciones de calidad de potencia (con enfoque cualitativo y cuantitativo, sin y con generación distribuida). Por ende se presenta una propuesta de índices normalizados ( Regulación de tensión, sobretensión y subtensión, corriente de falla, amplitud de hueco de tensión, distorsión armónica total en tensión, distorsión de la demanda total) implementada en un sistema de 34 nodos de IEEE, los cuales son comparados con los propuestos por dichos autores.
Una Propuesta Metodológica para Dimensionar el Impacto de los Vehículos Eléctricos sobre la Red Eléctrica
Authors: Ceballos Delgado John Edward , Caicedo Bravo Eduardo Francisco , Ospina Arango Sandra 
Published: May 2020

Resumen Contexto: Partiendo de las expectativas de evolución del vehículo eléctrico y las estaciones de recarga, se hace necesario estudiar cómo será la interacción entre estos nuevos elementos y la red eléctrica. Con este propósito se realizó una revisión de literatura acerca del impacto de los vehículos eléctricos en las redes de distribución, tomando como referencia países como España, Chile y Colombia.Método: Se establecieron los posibles circuitos susceptibles de ser impactados por los vehículos eléctricos y se determinó el impacto de los diferentes modos de transporte eléctrico en la calidad de la energía, mediante simulaciones realizadas en la herramienta MATLAB. La información que sirvió para hacer este trabajo de investigación se obtuvo de varios de los sistemas de gestión de la empresa, de las páginas oficiales de las secretarías de movilidad y de la UPME, trabajos de investigación de universidades nacionales y extranjeras, páginas de internet de fabricantes de vehículos eléctricos y de estaciones de carga y estándares de IEEE, entre otros.Resultados: Se obtuvo una serie de etapas, pasos, actividades, salidas y responsables, asociados con modelos eléctricos, que permiten determinar de una manera ordenada el impacto de los diferentes modos de transporte eléctrico, tanto en la cargabilidad del sistema de distribución, como en la calidad de la energía en cualquier punto de la red. Asimismo, se validó un caso de uso para una ciudad en la que se tuviera información suficiente de sus circuitos eléctricos y de ubicación de posibles sitios de instalación de electrolineras.Conclusiones: Desde la perspectiva de la aplicación de la metodología en un caso de uso, estos resultados permitirán determinar cómo debe adaptarse y cambiar la infraestructura de la red eléctrica de las empresas del sector, cuando haya una incursión masiva de los diferentes modos de transporte eléctrico.
Desarrollo ágil de una aplicación para dispositivos móviles. Caso de estudio: Taxímetro móvil
Authors: Babativa Goyeneche Angélica María , Briceño Novoa Paula Daniela , Nieto Lemus Alba Consuelo , Salazar Morales Omar 
Published: May 2020

Contexto: La globalización ha afectado todos los sectores productivos y en particular, la industria del software, lo cual ha requerido el desarrollo de nuevas metodologías que se adapten a las velocidades de los cambios y permitan construir rápidamente productos que satisfagan los requerimientos de los clientes. Por otro lado, la tecnología GPS, la conectividad 4G y la integración de redes sociales con las que cuentan la mayoría de teléfonos móviles actuales han abierto un campo grande de aplicación, en particular en el área del transporte, la movilidad y la denuncia ciudadana, cuyo desarrollo puede ser abordado con éxito mediante una metodología ágil.Método: Se utilizó la metodología ágil Scrum para el desarrollo de una aplicación móvil sobre el sistema operativo Android y tecnología GPS, que le permite a un usuario de taxi en Bogotá monitorear el recorrido y enviar una denuncia a la red social Twitter en caso de inconformidad. Para el análisis y diseño de se utilizaron algunos modelos de UML y se aplicó un intervalo de confianza para validar los resultados.Resultados: Prototipo de un de taxímetro móvil desarrollado con una metodología ágil, que satisface características de calidad, extensibilidad y mantenibilidad. Se utilizó una distribución t-student para validar la medición del prototipo sobre 50 muestras, concluyendo que la diferencia entre la medición de un taxímetro real y la del taxímetro móvil es en promedio 2 unidades con una desviación estándar de 1,39 unidades.Conclusiones: Se muestra que con el desarrollo ágil se pueden combinar herramientas de modelado UML y técnicas de validación estadísticas para obtener productos de calidad, que no violan, sino que por el contrario, reafirman los principios del desarrollo ágil.
Análisis y simulación del comportamiento de vorticidad para el modelo de partícula auto-propulsada
Authors: Espitia Cuchango Helbert Eduardo , Sofrony Esmeral Jorge Iván 
Published: May 2020

Contexto: En este documento se realizan varios analisis a un modelo enjambre de partículas autopropulsadas. Con estos análisis se busca mostrar que el enjambre tiene la capacidad de realizar movimientos circulares, lo cual también se presenta de forma cualitativa mediante varias simulaciones del modelo. Método: Sobre los análisis realizados se tiene en primer lugar el cálculo de puntos de equilibrio, posteriormente se observa la conservación de energía y momento angular, finalmente se realiza la estimación del radio de giro de las partículas cuando estas realizan movimientos circulares. Las simulaciones se realizan considerando los análisis de tal forma que se pueden observar las características más relevantes del modelo estudiando.Resultados: De los análisis realizados se aprecia que la componente de interacción entre partículas actúa como una fuerza centrípeta dirigida al centro de rotación del enjambre de tal forma que las partículas pueden describir una trayectoria circular a una velocidad constante.Conclusiones: Mediante los análisis realizados se identificaron varias características importantes del modelo estudiado las cuales de muestran de forma cualitativa mediante simulaciones. Palabras clave: Autopropulsión, modelo, partícula, vórtice.
Modelo de encriptación simétrica basada en atractores caóticos
Authors: Amaya Barrera Edilma Isabel , Suárez Parra César Augusto , Huérfano Ortiz Rafael Esteban , Moreno Posada José David , Parra Fuentes Fabio Andrés 
Published: May 2020

Contexto: El aumento en la capacidad de procesamiento de las máquinas y los desarrollos en los algoritmos de búsqueda combinatoria disminuyen el tiempo necesario para descifrar fraudulentamente la información; por esta razón se plantea la necesidad de generar nuevas formas de codificar la información para su transmisión segura.Método: En este artículo se presenta un modelo de encriptación simétrico extensible para comunicaciones digitales, aprovechando el caos generado por sistemas dinámicos no lineales. Resultados: El modelo desarrollado demostró estar en la capacidad de encriptar mensajes en tiempos de sincronización, encriptación y desencriptación inferiores a 1 ms con una entropía superior a 6 usando el atractor de Rossler para su implementación.Conclusiones: El algoritmo se presenta como una alternativa a los algoritmos tradicionales de combinatoria demostrando una mayor eficiencia en la gestión de recursos computacionales y plantea las bases para su continuar con su estudio en la comunidad académica interesada, debido a la variedad de los sistemas dinámicos no lineales.
Lead and strontium isotopes as palaeodietary indicators in the Western Cape of South Africa
Authors: Scott Mari , Le Roux Petrus , Sealy Judith , Pickering Robyn 
Published: May 2020

We analysed the isotopic compositions of bioavailable strontium (Sr) and lead (Pb) in 47 samples of animals and plants derived from the various geological substrates of southwestern South Africa, to explore the utility of these isotope systems as dietary tracers. Measurements were made using high-resolution multi-collector inductively-coupled-plasma mass spectrometry (MC-ICP-MS). 87Sr/86Sr could efficiently discriminate between geologically recent sediments of marine origin in near-coastal environments and older geologies further inland. However, 87Sr/86Sr was not able to distinguish between the Cape Granite Suite and the Cape System (Table Mountain sandstones), whereas Pb isotopes could, demonstrating the utility of this hitherto underused isotope system. Bioavailable 87Sr/86Sr in near-coastal terrestrial environments is influenced by marine input, whereas Pb isotopic ratios are not, because of low concentrations of Pb in seawater. There is considerable potential to use Pb isotopes as a dietary and palaeodietary tracer in near-coastal systems in fields as diverse as archaeology, palaeontology, wildlife ecology and forensics.
Significance:

This study is the first investigation of the potential of Pb isotopes as a dietary tracer in southwestern South Africa.
Pb isotopes are a valuable dietary tracer; used in combination with 87Sr/86Sr, they can extend our knowledge of landscape usage in coastal-marine environments.
Pb isotopes have also shown to be useful in samples from the 1980s, collected during the time when leaded petrol was in use in South Africa; however, these samples were from remote areas with low motor vehicle emissions.
RISK RELEVANCE OF COMPREHENSIVE INCOME: EVIDENCE FROM NON-FINANCIAL INDONESIA COMPANIES
Authors: Firmansyah Amrie , Utami Wiwik , Umar Haryono , Dwi Mulyani Susi 
Published: May 2020

Purpose of the study: This study aims to examine the effects of net income volatility, other comprehensive income volatility, and comprehensive income volatility on stock return volatility.
Methodology: This study employed a quantitative method with multiple linear regression. The sample is all non-financial companies listed on the Indonesia Stock Exchange from 2012 to 2017. Data used in this study are panel data sourced from www.idx.co.id and www.finance.yahoo.com. The sample selection in this study used a purposive sampling method with a total sample of 246 observations.
Results: This study suggests that net income volatility is not associated with stock return volatility. However, other income volatility and comprehensive income volatility are positively associated with stock return volatility.
Implications: Future studies can employ data from other developing country companies and developed countries to be able to compare the results of this study. Based on the result findings, the existing and potential investors must improve their ability and understanding of IFRS-based financial accounting standards. The Accounting Standard Board, especially in Indonesia, is expected to be able to improve the rules of financial accounting standards as well as the access to the availability of financial accounting standards for financial statements users, primarily related to the disclosure policies.
Novelty: This study calculates risk-relevant, which is different from the previous studies, namely annual stock return volatility and annual comprehensive income components volatility. Annual stock return volatility is calculated based on the standard deviation of monthly stock return volatility, which is multiplied by √12. Besides, the annual comprehensive income components volatility is generated from the standard deviation of comprehensive income components generated every three months divided by the market value of equity at the beginning of the period, and multiplied by √4.
IDENTITY, STATE, AND TRADITION: A THEORETICAL PERSPECTIVE
Authors: Dutta Ankita 
Published: May 2020

Purpose of the Study: This research endeavors to highlight the complex notion of ‘identity’ and the process of identity formation that involves complex socio-political dynamics that need to be located within the larger socio-cultural spectrum.
Methodology: The study is based upon a socio-political and socio-anthropological analysis of the questions of identity, state, tradition, and culture. It has been carried out using relevant theories and concepts borrowed chiefly from the available literature on political sociology and anthropology. It is based on a theorization of the concept of identity as a societal construct and its dynamic relationship with not only the state but also people’s traditional beliefs and practices.
Main Findings: Based upon secondary sources, the results of the study showed that ‘identity’ as a social construct is based on various conflicts and contestations centering around people’s diverse identities at one and the same time. Identity politics plays a crucial role in the context of the state machinery, which is not a static entity. It is very much affected by the changes taking place within society, which, in itself, is representative of diversity and heterogeneity. People’s traditional beliefs and practices also play a significant role in the formation of identities through institutions recognized as “traditional.” They play an important role in reflecting the changing power relations in society through the instrument of law.
Applications of this Study: Both formal state laws and community-backed laws are indispensable in our society because they function within a particular social context that is responsible for the gradual process of internalization of the law and legal processes among people. This, in turn, gets reflected in the formation of various social identities among different groups and communities of people.
Novelty/Originality of this study: This research builds a model to understand the different ways in which institutions recognized as “traditional” create new identities or reinforce the already existing ones vis-à-vis the different stages of political development in a society.
PSYCHOLOGICAL WELL-BEING OF DRUG ADDICTS IN PREDICTING TREATMENT OUTCOMES
Authors: Sabri Farhana , Jencius Marty 
Published: May 2020

Purpose of the study: This study aims to investigate whether psychological well-being could predict treatment outcomes in drug addicts after they had received solution-based psychosocial intervention in a drug treatment setting. The psychological well-being of individuals is an important variable in discussing treatment outcomes after they were given psychosocial interventions.
Methodology: This study utilized a quasi-experimental research design using non-randomized pre-and post-test single group design. Fifty-seven participants were selected and they completed a pre- and post-assessment on psychological well-being changes and treatment outcomes questionnaire. Paired t-test and Pearson correlation were used to analyze the relationship between these two variables, while multiple linear regression was used to further explore whether participants' psychological well-being could predict their treatment outcomes.
Main Findings: Results indicated a significant relationship between these two variables and more than twenty percent in treatment outcomes were explained by psychological variance. Few contextual meanings of psychological symptoms should need to be emphasized in discussing the findings and future research direction.
Applications of this study: Having studied whether psychological well-being could predict treatment outcomes of drug addicts would benefit counselors and social workers who deal with addiction clients. The element of psychological well-being, such as mental health must be included in the treatment plan to increase the success of recovery amongst drug addict clients.
The novelty of this study: The conclusions from this study offer significant insight into the utilization of solution-focused intervention in non-Western populations and the relation between psychological well-being and treatment outcomes for drug addict clients. The findings expand the existing literature review on the psychological well-being of drug addicts in a way it takes into accounts the cultural context in discussing the outcomes.
BULUT OR BASAH? WHICH WET IS PRESERVED? AN INVESTIGATION OF DISAPPEARING ACEHNESE ADJECTIVES AMONG YOUNG SPEAKERS
Authors: Abdul Muthalib Kismullah , Maya Silviyanti Tengku , Fahlevi Reza 
Published: May 2020

Purpose of the study: This study was aimed at finding out the potentially disappearing adjectives in Acehnese and the reasons that may contribute to the disappearance by looking at the backgrounds of participants and their language use.
Methodology: This is a sociolinguistic study employing questionnaires, wordlist interviews, and focus group interviews (FGI) as methods of data collection. Fifty Acehnese adjectives extracted from the Swadesh list were tested to 10 younger speakers (age 13-14), who were selected out of 113 respondents who returned the questionnaires. The selection criteria are considered to include age, origin, and parents’ origin. The respondents were all students of years 7 and 8 of a junior high school in a suburban area of Banda Aceh, considered the hot spot for the contact between Indonesian language speakers and Acehnese language speakers. Responses of the 10 participants interviewed were qualitatively analyzed to get the insights and circumstances of the use of the targeted adjectives.
Main Findings: The findings of this study show that 50% of the number of tested words was only known to 50% of the participants interviewed. While the other half of the participants show varied knowledge and understanding of the tested adjectives, the questionnaire response also indicates that these young speakers’ rather negative attitudes toward the Acehnese point to the decreasing domains of language use.
Applications of this study: The finding of this study is expected to contribute to the field of sociolinguistics in the way that it informs about the status and vitality of Acehnese Language from the specific segment of its speakers, which can be taken into consideration in the language policymaking.
Novelty/Originality of this study: This study looks at which vocabulary items (from Swadesh list) are still known to the younger speakers of Acehnese. Specifically, this study focused on the adjectives in Acehnese, which are still familiar to the speakers and which are not.
Multi-objective Evolutionary Algorithms for Power Distribution System Optimal Reconfiguration
Authors: Benitez Cattani Ivo 
Published: May 2020

In this paper two reconfiguration methodologies for three-phase electric power distribution systems based on multi-objective optimization algorithms are developed in order to simultaneously optimize two objective functions, (1) power losses and (2) three-phase unbalanced voltage minimization. The proposed optimization involves only radial topology configurations which is the most common configuration in electric distribution systems. The formulation of the problem considers the radiality as a constraint, increasing the computational complexity. The Prim and Kruskal algorithms are tested to fix infeasible configurations. In distribution systems, the three-phase unbalanced voltage and power losses limit the power supply to the loads and may even cause overheating in distribution lines, transformers and other equipment. An alternative to solve this problem is through a reconfiguration process, by opening and/or closing switches altering the distribution system configuration under operation. Hence, in this work the three-phase unbalanced voltage and power losses in radial distribution systems are addressed as a multi-objective optimization problem, firstly, using a method based on weighted sum; and, secondly, implementing NSGA-II algorithm. An example of distribution system is presented to prove the effectiveness of the proposed method.
Software Development to Reduce Misconceptions Using Conceptual Change Text Strategy on Chemical Bonding Matter
Authors: Putri Sovranita Ramadhani Setiawan , Sukarmin Sukarmin 
Published: May 2020

The aims of this research is to determine the feasibility of software to reduce misconception on students using conceptual change text strategy on chemical bonding matter. This research is using Research & Development (R&D) design with X IPA MAN Sidoarjo’s students as a subject. Instrument used are student responses, student activity observation, and pretest-posttest sheet. Software developed using PHP (Hypertext Preprocessor) programming language. The result analyzed by a descriptive quantitative method that can be conclude as (1) The validity of software is valid showed by content validity average percentage is 88,57% with very valid criteria and construct validity average percentage is 88,89% with very valid criteria (2) the practicity of software got 87,41% with very practice criteria (3) Software effective in detect and reduce misconception that showed by percentage the average shift of conception from misconception to know concept is 83.53%.Keywords: software, misconception, conceptual change text, chemical bonding.
Incidência de COVID-19 (Sars-Cov-2) e fluxos de deslocamentos para serviços de saúde na Região AMAUC: Geotecnologias aplicadas aos estudos demográficos
Authors: Talaska Alcione , Talaska Camila 
Published: May 2020

As transformações científicas e tecnológicas que configuram o momento atual da sociedade fazem com que o aperfeiçoamento de métodos que visam alcançar a excelência em termos de conhecimento e tratamento de dados espaciais estejam sempre na ordem do dia. Com este entendimento, a proposta foi elaborar mapas temáticos aplicados ao monitoramento da difusão do COVID-19 (Sars-Cov-2) na região da Associação dos Municípios do Alto Uruguai Catarinense (AMAUC). Assim, descreve-se os procedimentos geotecnológicos aplicados na geração de produto cartográfico, que relaciona a incidência dos casos confirmados de Covid-19 (Sars-cov2) para grupos de 1.000 habitantes e os deslocamentos da população residente para o acesso aos serviços de saúde. O produto cartográfico final se mostra importante para análises, comunicação visual e interpretação de fenômenos espaciais que importam ao planejamento e gestão territorial.