bluuebunny/crossref_metadata_2025 huggingface dataset:
O símbolo de uma história escolhida: o patrimônio cultural e a difícil tarefa de construir a memória da ditadura
Authors: Neves Deborah Regina Leal
Published: August 2024

Nos últimos anos, a discussão no Brasil acerca da elucidação doscrimes cometidos pelo Estado durante a Ditadura Civil-Militar (1964-1985) vemganhando espaço na sociedade. Com isso, as disputas sobre os lugares dememória e as rememorações do período suscitaram questionamentos sobre aatuação da preservação do patrimônio cultural como “refrigério” da culturaoficial, num movimento de lembrar e esquecer, preservar e destruir causadopelas tensões intrínsecas ao tema. Este ensaio busca apresentar brevepanorama da preservação de “lugares de memória” deste período, em especialo edifício do Antigo Dops, em perspectiva com o edifício da ESMA, na cidade deBuenos Aires.Palavras-chave: ditadura civil-militar; patrimônio; memória
Aproximaciones al paisaje hispano-indígena de fines del siglo XVIII a través de documentos históricos generados en el contexto fronterizo del Virreinato del Río de la Plata
Authors: Enrique Laura Aylén
Published: August 2024

A fines del periodo colonial, la frontera sur del Virreinato del Río de laPlata era una región donde las sociedades indígenas e hispanocriollas interactuabande modo diverso. Pensamos que los documentos históricos escritos en laspostrimerías del siglo XVIII por los funcionarios coloniales españoles nos permitenaproximarnos al paisaje que era construido en el marco de esas relacionesinterétnicas. Por ello, nos proponemos mostrar que estos relatos pueden resultarútiles herramientas para comprender la organización del territorio norpatagónicodurante periodo tardo-colonial y reflexionar acerca de las discontinuidades actualesen el área. Sostenemos que conocer el modo en que se articulaba la región nosbrindará información para recuperar aspectos de la continuidad temporal del paisajedel norte de la Patagonia que hoy son dejados de lado.
CHANGE OF THE PRESIDENT OF HUNGARY: CAUSES AND CONSEQUENCES
Authors: Shishelina Lyubov ,   Institute of Europe, Russian Academy of Sciences
Published: August 2024

In February 2024, Hungarian President Katalin Novak resigned after only 20 months in office. The formal reason, according to her own admission, was an insufficiently thought-out decision related to the release from responsiveness of one of the defendants in the pedophile scandal in an orphanage. Although the decision was made in the spring of 2023, its details have been raised on the billboard by the opposition only now. Hungarian society reacted to the situation in different ways. Some were outraged by the «unacceptable frivolity» on the part of the country’s president, others felt that K. Novak should still have found an explanation for her action and not give up as easily as she did. Although not more popular than her predecessors, the current head of state nevertheless successfully fit into the European mainstream for gender equality, becoming the first woman in this post in Hungarian history, as well as the youngest president of the country. And although the post of president has rather decorative significance due to the Hungarian constitution, there were still moments in Hungarian history when political contradictions between the president and the Prime Minister raised important discussions in Hungarian society. In this case, K. Novak could not rise to such a level, on the contrary, casting a shadow on the moral principles that Prime Minister Orban puts at the forefront of his policy. However, the search for a new contender for the Alexander Palace, where the residence of the Hungarian president is located, did not take long. According to the constitution, this takes a month. At the moment, the parliament has been invited to vote for the candidacy of the head of the Constitutional Court of Hungary, Tamas Sulyok.
EUROPEAN UNION RED SEA MISSION
Authors: Shumilin Alexander ,   Institute of Europe, Russian Academy of Sciences
Published: August 2024

The article examines the general situation in the Red Sea region that has developed since the start of regular armed attacks by the Yemeni Houthis on merchant ships there in October 2023. Data is provided on the damage caused by this rebel organization in Yemen to regional and global trade. The author pays special attention to the analysis of the role of the naval forces of Western states in the Red Sea. Since October 2023, the most powerful US Navy grouping in recent decades has been formed there, and after February 19, 2024, warships from EU countries joined it as part of Operation Aspides («Shields» from ancient Greek). Thus, Brussels took a noticeable step as part of its strategy of strengthening geopolitical influence not only in the Middle East, but also on a broader scale, taking into account the importance of the Red Sea routes for world trade, as well as for the regional security system. It is expected that the area of responsibility of this EU naval mission will soon be expanded to include the Persian Gulf and the northern Indian Ocean. Taken together, the author views the situation in the Red Sea as a manifestation of degradation in the security sphere of the Middle East and in the world as a whole.
REGULATION OF FOREIGN DIRECT INVESTMENT IN THE EUROPEAN UNION
Authors: Kulinich Alexander ,   IMEMO
Published: August 2024

The topic of the article is changes in the regulation of foreign direct investment in the European Union over the last decade. Approaches to FDI regulation by the European Commission and national governments of the EU are analysed. It is revealed that after the crisis of 2008–2009 the EU, as well as other countries, slowed down their participation in international capital flows. At the political level, the consequence of this process was the strengthening of investment regulation both at the supranational and state levels, which was reflected in the adoption of legislative acts both by the EU and the member states of the integration association. Reactions of the EU countries to the crises of 2008–2009 and 2020–2022 are compared, the factors that influenced anticrisis measures in the sphere of foreign investments are revealed. The most important sectors of the economy have been identified, foreign investments in which are subject to particularly strict control by national and European authorities. The prospects of the EU countries as a centre of attraction of foreign capital in the context of rivalry with the USA are considered. The influence of the Ukrainian crisis on the movement of international capital to the EU states is assessed.
Diagnosing Immune Checkpoint Inhibitor-Induced Myocarditis: Insights, Challenges, and Uncertainties
Authors: Lu Liang , Wang Xiyu , Xu Haodong
Published: August 2024

Recent advancements in immunotherapy have substantially improved overall survival and quality of life among patients with cancer. Notably, immune checkpoint inhibitors (ICIs) have emerged as a revolutionary strategy, particularly in the management of advanced cancers. However, the success of ICIs is accompanied by the challenge of immune-related adverse events. Although rare, cardiovascular adverse events associated with ICIs are associated with high fatality rates and rapid clinical progression, thereby necessitating timely intervention. This review explores the histopathologic characteristics of ICI-induced myocarditis, shedding light on the complexities of diagnosis and management. Several studies examining the histopathologic features of ICI-induced myocarditis have emphasized the roles of macrophages and the potential utility of ancillary tests such as immunohistochemistry. Quantifying CD68+ macrophage abundance may enhance diagnostic sensitivity, thereby providing valuable insights into clinical outcomes. In conclusion, this review underscores the need for a nuanced approach to diagnosing ICI-induced myocarditis. The comprehensive exploration of histopathologic characteristics, ancillary tests, and emerging diagnostic markers provides valuable guidance for practicing pathologists. As the population of ICI-treated patients with cancer continues to grow, optimizing immunohistochemistry panels and refining diagnostic criteria will be crucial to address the unique challenges posed by ICI-induced myocarditis.
Brain Pericytes — Crucial Regulators of Neuroinflammation in Ischemic Stroke
Authors: Chen Ziyi , Li Qingsheng , Wang Kaixin , Yang Lingfei , Jia Yanjie , Gong Zhe
Published: August 2024

Inflammation is a key element in the pathophysiology of ischemic stroke. The current effective treatments for ischemic stroke are almost exclusively based on reperfusion of occluded vessels. An increasing number of studies are attempting to develop better treatment strategies for ischemic stroke by investigating the involvement of neuroinflammation in the pathogenesis. There is a growing focus on the inflammatory response of glial cells within the neurovascular unit (NVU) in ischemic stroke, while pericytes, despite their central position within the NVU and having interactions with all cellular components through direct contact or signaling pathways, have been less studied in terms of the related inflammatory mechanisms. Pericytes regulate blood flow, modulate the entry of peripheral immune cells into the brain parenchyma, and contribute to the integrity of the blood-brain barrier (BBB), which situates pericytes in a unique position to significantly influence NVU function. This article discusses the potential inflammatory mechanisms of pericytes in ischemic stroke from three perspectives: pericytes and innate immunity in the brain; pericytes and infiltration of peripheral inflammatory cells; and pericytes and BBB repair mechanisms. The goal is to better understand the role of pericytes in the pathogenesis of ischemic stroke and to provide new insight for research and treatment.
Assessing Cross-Contamination in Spike-Sorted Electrophysiology Data
Authors: Vincent Jack P. , Economo Michael N.
Published: August 2024

Recent advances in extracellular electrophysiology now facilitate the recording of spikes from hundreds or thousands of neurons simultaneously. This has necessitated both the development of new computational methods for spike sorting and better methods to determine spike-sorting accuracy. One long-standing method of assessing the false discovery rate (FDR) of spike sorting—the rate at which spikes are assigned to the wrong cluster—has been the rate of interspike interval (ISI) violations. Despite their near ubiquitous usage in spike sorting, our understanding of how exactly ISI violations relate to FDR, as well as best practices for using ISI violations as a quality metric, remains limited. Here, we describe an analytical solution that can be used to predict FDR from the ISI violation rate (ISIv). We test this model in silico through Monte Carlo simulation and apply it to publicly available spike-sorted electrophysiology datasets. We find that the relationship between ISIvand FDR is highly nonlinear, with additional dependencies on firing frequency, the correlation in activity between neurons, and contaminant neuron count. Predicted median FDRs in public datasets recorded in mice were found to range from 3.1 to 50.0%. We found that stochasticity in the occurrence of ISI violations as well as uncertainty in cluster-specific parameters make it difficult to predict FDR for single clusters with high confidence but that FDR can be estimated accurately across a population of clusters. Our findings will help the growing community of researchers using extracellular electrophysiology assess spike-sorting accuracy in a principled manner.
Physical and microstructural properties of coconut (Cocos nucifera) particleboards bound with castor oil-based polyurethane resin
Authors: Andraus Bispo Rodrigo , Reis Rodrigues Felipe , da Silva Cazella Pedro Henrique , Mello da Silva Sérgio Augusto , Aquino Vinícius Borges de Moura , Moreto Jeferson Aparecido , Chahud Eduardo , Branco Luiz Antonio Melgaço Nunes , dos Santos Herisson Ferreira , Lahr Francisco Antonio Rocco , Christoforo André Luis
Published: August 2024

Particleboards find extensive application in both civil construction and the furniture industry. Nevertheless, concerns about the interaction of panels with humidity require the exploration of alternative sources to develop a product that meets the requirements for use. This work aims to produce single-layer particleboards with coconut fiber (Cocos nucifera) as substrate, bonded with 10% by mass castor oil-based polyurethane resin (CPUR). Two groups of mixtures were proposed, different from each other in the initial moisture content of the Cocos nucifera particles, ranging from 0 to 2% and from 4% to 6%. For this purpose, density (D), thickness swelling after 24 h (TS), moisture content (MC), and water absorption (WA) were evaluated. The Tukey mean contrast test, at a 5% significance level, was used to verify the influence of the initial moisture content of the particles on the physical properties of the particleboards. The microstructure of the composites was assessed through the utilization of scanning electron microscopy (SEM) technique. The results indicated better compaction of the C. nucifera particles, resulting in fewer voids, contributing to the densification of the panels and, with this, the reduction of water absorption by 15.1%.
Crashworthiness analysis and morphology of hybrid hollow tubes reinforced by aluminum mesh with hybrid woven fibre composites (basalt, jute, hemp, banana, bamboo) using roll-wrapping technique
Authors: Rengaiyah Govindarajan Padmanabhan , Shanmugavel Rajesh , Palanisamy Sivasubramanian , Khan Tabrej , Junaedi Harri , Kumar Ajay , Sebaey Tamer A.
Published: August 2024

This study investigated the mechanical performance of hybrid tubes made via roll-wrapping and enhanced with an aluminum mesh and epoxy matrix (AL-DMEM). The specimens included Basalt + Jute (BJAJB), Basalt + Bamboo (BBmABmB), Basalt + Banana (BBaABaB), Basalt + Hemp (BHAHB), and Basalt (BAB). The BBmABmB specimen showed the best mechanical properties with the highest peak crushing force, specific energy absorption, mean crushing force, and total energy absorption. The AL-DMEM integration improved load-bearing capacity and energy absorption, reducing matrix cracking and fiber breakage. Scanning electron microscopy and energy-dispersive X-ray analysis highlighted BBmABmB’s robust reinforcement. Its superior structural integrity and aluminum content make it suitable for applications requiring high structural integrity, such as micromobility vehicles, highlighting the potential of AL-DMEM-reinforced composites in advanced engineering applications.
Greenhouse gas emission reduction through wood-based furniture substitution: Analysis of displacement factors
Authors: Han Donghee , Kim Min-Ji , Kim Myungkil , Han Yeonjung
Published: August 2024

Substituting the use of non-renewable materials with wood-based products in the furniture industry is expected to reduce greenhouse gas (GHG) emissions. This substitution effect can be quantified by estimating the displacement factor (DF) of wood products. However, the lack of a standardized DF calculation method limits a reliable estimation of DFs for wood substitution in the furniture industry. Herein, DF values were determined for wood substitution in office furniture in Korea using three DF calculation methods, single DF, replacement rate-based DF, and more/less wood-intensive DF. The results indicated that substituting non-wood furniture with wood-based furniture can help reduce GHG emissions, with the most positive DF values observed. The negative DF values generated using the replacement rate-based DF method highlighted the importance of weight calculation when considering wood products. However, the difference in DF calculation methods between studies and the lack of life cycle assessment (LCA) data in Korea must be addressed. In conclusion, these results emphasize the need for a standardized DF calculation method and LCA data to improve the accuracy and applicability of the DF of wood-based furniture products. The present results provide insights into the environmental benefits of replacing non-wood products with wood products in the furniture industry.
Prediction of equilibrium moisture content and swelling of thermally modified hardwoods by Artificial Neural Networks
Authors: Masoumi Abasali , Bond Brian H.
Published: August 2024

In this study artificial neural network (ANN) models were developed for predicting the effects of wood species, density, modifying time, and temperature on the equilibrium moisture content (EMC) and swelling of six different thermally modified hardwood species, as previously published by the authors. Lumber of Yellow-poplar (Liriodendron tulipifera), red oak (Quercus borealis), white ash (Fraxinus americana), red maple (Acer rubrum), hickory (Carya glabra), and black cherry (Prunus serotina) were selected. Treatment type, species, temperature, time, and density were used as inputs for the models. Using Keras and Pytorch libraries in Python, different feed forward and back propagation multilayer ANN models were created and tested. The best prediction models, determined based on the errors in training iterations, were selected and used for testing. Based on the performance analysis, the prediction ANN models were accurate, reliable, and effective tools in terms of time and cost-effectiveness, for predicting the EMC and swelling characteristics of thermally modified wood. The multiple-input model was more accurate than the single-input model and it provided a prediction with R2 of 0.9975, 0.92, and MAPE of 1.36, 7.77 for EMC and swelling.
СОЦІАЛЬНИЙ КАПІТАЛ БІЗНЕСУ: МЕТА, ФОРМУВАННЯ І СТРАТЕГІЇ РЕАЛІЗАЦІЇ
Authors: ОНИЩЕНКО Володимир
Published: August 2024

Доведено визначальну роль соціального капіталу в післявоєнній відбудові України.  Соціальний капітал розглянуто як категорію економічної теорії, а його цілі, умови і стратегію відтворення – як категорію капіталу на рівні бізнес-структури. Показано, що для відбудови України необхідно активно відтворювати соціальний капітал держави, і в першу чергу – на рівні бізнес-структур; головним продуктом соціального капіталу є довіра, яка сприяє підвищенню ефективності економічного суб’єкта через формування до нього довіри ринку; умовами формування довіри є свобода і справедливість, які повинні панувати у соціально-економічних відносинах суспільства.
Доведено, що соціальний капітал слід розглядати в контексті економічної теорії і практики як інвестиції у відтворення соціальних ресурсів суспільства на всіх його рівнях для підвищення ефективності економіки і, відповідно, рівня життя населення. Показано, що йому притаманні складові, які визначають капітал у його класичному розумінні. Результатом реалізації соціального капіталу є підвищення ефективності економіки, яке є наслідком зростання довіри ринку до бізнесу, в тому числі й ринку робочої сили. Визначено, що у формуванні соціального капіталу бізнес-структури велике значення мають сучасні маркетингові технології, які формують ринкову довіру до неї, і соціальний менеджмент, який сприяє формуванню її внутрішнього соціального капіталу.
Відтворення соціального капіталу в Україні на рівні бізнесу, держави та її соціальних утворень не є прийнятним, про що говорить незадовільне становище України в багатьох світових рейтингах, які відображають рівень соціального капіталу.
ПІДПРИЄМСТВА ІЗ СПОТВОРЕНИМИ МОДЕЛЯМИ ФІНАНСУВАННЯ: ПОШИРЕНІСТЬ І НАСЛІДКИ
Authors: КЕРІМОВ Павло
Published: August 2024

У 1996–2020 рр. унаслідок викривлень у інституційному середовищі в Україні набули поширення підприємства з перекрученою системою фінансування. Крім зомбі-підприємств, які стали активно досліджувати по всьому світу після кризи 1990-х років у Японії, в Україні також можуть бути зафіксовані підприємства, які завищують свої витрати, використовуючи запозичення і кредити від пов’язаних кредиторів з офшорів (підприємства з квазіризиковою моделлю фінансування), і підприємства, які здебільшого функціонують за рахунок комерційного кредиту з простроченням понад нормативні 60 днів (підприємства з недоброчесною моделлю фінансування).
Оцінено поширеність таких підприємств в українській економіці, визначено їх вплив на податкові надходження в країні. Проведено розрахунки часток кожного з видів підприємств із спотвореними моделями фінансування за репрезентативною вибіркою у період 2007–2019 рр. у розрізі окремих галузей, здійснено базове економетричне моделювання впливу таких підприємств на податкові доходи в цілому і в розрізі основних податків. Наведено кореляційні матриці досліджених параметрів.
Визначено, що, попри надзвичайно високу частку підприємств із спотвореними моделями фінансування, їх прямий вплив на податкові надходження є обмеженим. Зокрема, моделюванням підтверджено лише прямо пропорційний зв’язок частки зомбі-підприємств із загальними податковими надходженнями в державний бюджет у межах 99 % довірчого інтервалу, і прямо пропорційний зв’язок часток зомбі-підприємств і підприємств з недоброчесною моделлю фінансування з надходженнями від ПДВ у межах 90 % довірчого інтервалу. Виявлено ряд кореляцій, підтвердження яких неможливо отримати за доступною статистикою.
Tercerización y precarización laboral en el sector público colombiano
Authors: Delacruz- Giraldo Gustavo-Nixon , Gordillo-Mafla Eliecer
Published: August 2024

El presente artículo analiza las tendencias globales de tipo económico, organizacional y jurídico para las relaciones laborales debido al fenómeno de la flexibilización, en el que se evidencian vínculos laborales al margen de los derechos y garantías del trabajo aún en el sector público. Lo anterior hace necesario acudir metodológicamente al análisis y descripción de las relaciones de trabajo en el sector público, auscultando la copiosa reglamentación que al respecto se ha emitido, identificando formas de vinculación que afectan las condiciones dignas de empleo y de estabilidad. El análisis cualitativo sobre los principios del derecho laboral constitucional, como la descripción de la variedad de disposiciones nacionales, permite asumir una postura sobre el desarrollo de los postulados constitucionales y principios básicos del derecho humano al trabajo.
La Corte Penal Internacional: la inclusión del Ecocidio como quinta categoría de crimen
Authors: Durango-Álvarez Gerardo A.
Published: August 2024

El siguiente trabajo tiene como objetivo analizar, no sólo la inclusión del ecocidio como quinta categoría de crimen de competencia de la Corte Penal Internacional, sino también analizar el posible cambio de paradigma de ampliar las sanciones penales —que hoy son individuales—, hacia la responsabilidad de las sociedades como las empresas y multinacionales nacionales e internacionales. Esto es, se busca pasar de una sanción penal individual para quien causa daños graves al medio ambiente —ineficaces hasta ahora—, a la vinculación penal de sociedades y corporaciones tanto a nivel nacional como internacional.
Techno-Economic Feasibility Analysis of a Diesel/ Organic Rankine cycle system for Distributed Generation
Authors: Galindo Noguera Ana Lisbeth , Mendoza Castellanos Luis Sebastián
Published: August 2024

he use of an Organic Rankine Cycle (ORC) for exhaust gas heat recovery from diesel generator sets allows the production of additional power, and thus supplies an additional energy demand in isolated locations. An energy model of the diesel generator was developed, which allows the determination of parameters such as the specific heat, mass flow rate, and exhaust gas temperature required for system design. R245fa was used as the ORC working fluid. A comparative analysis was performed between the use of conventional diesel generators and the diesel-ORC system in the case of a non-interconnected region in Brazil in terms of energy cost, specific fuel consumption, and electrical efficiency.  The results show that a specific fuel consumption of 0.271 L/kWh is obtained with the diesel generator system, while that of the diesel-ORC is 0.248 L/kWh. The energy cost of the diesel-ORC system was 15.56 % lower than that of the diesel generator system.
Voltage stability in a 115kV network with the integration of PV generation
Authors: Rojas Madero Wilson , Tello Maita Josimar Dadi , Marulanda Guerra Agustín Rafael
Published: August 2024

The purpose of this article is to model the power system of the Electrificadora del Meta (EMSA), analyze events occurred during the integration of distributed generation and perform a stationary voltage stability study with DigSilent PowerFactory. To model the power system, the data from equipment and events are collected from the electricity market administrators and from the utility’s internal information. The stability study is performed employing the P-V and Q-V curves that limit the demand in the power system. Results allow to conclude that the most important factor in the implementation of PV generation at a large scale is the voltage regulation by the generator and it is essential to have an operation manual to coordinate the injection or consumption of reactive power, considering the declared capacity curve to minimize the voltage variations experienced by clients.
Prediction of thunderstorm days in Chilean territory using machine learning techniques
Authors: Montaña Chaparro Johny Hernán , Rosales Sergio , Valle Carlos , Zumarán Sergio
Published: August 2024

This study presents the design of a model that allows for the prediction of thunderstorm days. The study was conducted in a location within Chile, with the requirement that it be an area that has recorded a high number of lightning and has sufficient meteorological records between the years 2012 and 2021 to train a machine learning model. The chosen location was Visviri, in the Arica and Parinacota region. A methodology was employed, which included creating a dataset, conducting Exploratory Data Analysis, handling missing data, feature engineering, feature selection, hyperparameter tuning, and sensitivity analysis to find the best-performing model based on the F1 score. The model developed was a multilayer neural network with ReLU activation function and dropout, achieving a performance of 74% in F1 score for the year 2021.
Compensación de armónicos a partir de sistemas de almacenamiento con baterías
Authors: Rodríguez Rodríguez Edwar Santiago , Moya Díaz Daniel Alejandro , Guerrero Guerrero Andrés Felipe , Rosero García Javier Alveiro
Published: August 2024

Las fuentes no convencionales de energía renovable (FNCER) cada día incrementan su porcentaje de participación en la matriz energética del país, principalmente por la necesidad de reducir las emisiones de CO2. Debido a la naturaleza intermitente de las FNCER, es necesario integrar sistemas de almacenamiento de energía para garantizar la disponibilidad del recurso en cualquier momento y lugar. Las baterías son los dispositivos que se usan con mayor frecuencia en estas aplicaciones, sin embargo, incrementan sustancialmente el costo del sistema. La inclusión de FNCER, así como la conexión de diversas cargas lineales y no lineales en el sistema eléctrico generan problemas de calidad de la potencia tales como los armónicos. Considerando lo anterior y como una estrategia para justificar el costo del sistema de almacenamiento de energía, es posible buscar alternativas para mitigar armónicos a partir del proceso de carga y descarga de las baterías. En este artículo, se analiza el uso de sistemas de almacenamiento de energía basados en baterías como una solución preliminar para mitigar estos fenómenos. El estudio se basa en casos de prueba donde se realizan modificaciones en la exigencia de carga y la capacidad nominal de la batería. Los resultados demuestran que mediante estas modificaciones se logra alcanzar una mejora significativa en la calidad de la potencia, reduciendo la distorsión armónica (THD) de manera efectiva.
Viabilidad técnico-económica de generación de energía eléctrica a partir de energía solar fotovoltaica en la isla de San Andrés
Authors: Rosero - Garcia Javier , Moreno-Lopez Wilmar , Galindo-Rojas Andres , Duque-Montenegro Andres
Published: August 2024

la generación de electricidad en la isla de San Andres se efectúa a partir de combustibles fósiles con unidades de generación de Diesel, afectando la sostenibilidad del suministro eléctrico. Esta isla se proyecta a futuro como una región autosostenible incorporando fuentes de energía renovable, es por esto por lo que mediante el uso de herramientas computacionales como Neplan, Homer Pro y MATLAB, se desarrollan casos de estudio para el planteamiento de la diversificación de la matriz energética de la isla de San Andrés, mediante la implementación de SSFV considerando las restricciones técnicas de la red eléctrica actual. Se encuentra que la penetración de las SSFV puede ser de hasta 28 MW. El ahorro de un solo año en combustible y subsidios, sumado a la monetización de bonos de carbono por toneladas de CO2 no emitidas permiten el financiamiento completo de las políticas departamentales orientadas a la totalidad de la población vulnerable del Departamento Archipiélago para el cuatrienio 2020 – 2023. El retorno de la inversión con el resultado del modelo de optimización planteado es de 3.18 años, lo que determina su viabilidad.
Electrificación Rural Sostenible a Partir de Potenciales Energéticos Locales – una Mirada a las Zonas No Interconectadas Colombianas
Authors: Márquez Bedoya Alejandro , Álvarez – Tarapuez Edgar Daniel , Idárraga – Guarín Juan Camilo , Muñoz – Muñoz Marly Dayana , Martínez – Espinosa Yuliana , Tonguino - Ortiz Angie Paola , Carvajal – Quintero Sandra Ximena , López García Dahiana
Published: August 2024

La electrificación de zonas rurales, especialmente en áreas remotas y de difícil acceso, plantea un desafío significativo en términos de suministro de energía confiable y sostenible. El presente artículo realiza una revisión exhaustiva de las opciones de electrificación mediante energía renovable, analizando sus beneficios y limitaciones económicas, ambientales y sociales. Se destacan casos de estudio a nivel internacional que demuestran la implementación exitosa de diversas formas de generación de energía en zonas aisladas para satisfacer las necesidades de electrificación. Estas tecnologías buscan mejorar la calidad de vida de las familias en áreas no interconectadas mediante el aprovechamiento de los potenciales energéticos locales. Además, se realiza un diagnóstico del sistema actual utilizado en Colombia para suministrar energía eléctrica a zonas aisladas utilizando datos del Sistema Único de Información (SUI) y el Instituto de Planificación y Promoción de Soluciones Energéticas (IPSE). Este diagnóstico permite identificar el tipo de generación presente en las diferentes localidades de las zonas no interconectadas del país, así como sus características. En conclusión, el artículo proporciona una visión integral de los desafíos y oportunidades relacionados con la electrificación rural, destacando la importancia de considerar enfoques sostenibles y soluciones basadas en recursos locales para lograr un suministro de energía eficiente, confiable y sostenible en estas áreas.
Comparison of transformations and feature extraction techniques to characterize fault-induced voltage sags
Authors: Caicedo Joaquín E. , Rivas Edwin , Meyer Jan
Published: August 2024

This paper presents a comparative study of domain transformations and feature extraction techniques to characterize fault-induced voltage sags. For this purpose, synthetic signals of fault-induced voltage sags are generated through extensive simulations in MATLAB/Simulink. Next, some relevant transformations are applied to the synthetic signals, namely, the space phasor model, discrete Fourier transform, and short-time Fourier transform. A set of statistical, time series, and spectral features are extracted from transformation outputs to obtain signal characterization useful, for instance, for classification of voltage sags employing artificial intelligence techniques. The comparison of the applied domain transformations and feature extraction techniques covers quantitative and qualitative aspects including computation time, storage requirement, linear separability and physical interpretation of features, and suitability for characterizing voltage sags. Finally, the main findings of the work are discussed, and conclusions are remarked.
Diagnóstico y propuesta de modernización de la energía en Zonas No Interconectadas: Caso Isla Fuerte, Bolívar
Authors: Reina Portocarrero Breyner , Carvajal Quintero Sandra Ximena , López García Dahiana
Published: August 2024

Este artículo de investigación aborda el diagnóstico de la prestación del servicio de energía en las Zonas No Interconectadas de Colombia, con un enfoque específico en el caso de Isla Fuerte, Bolívar. Mediante un análisis exhaustivo, se examinan las condiciones actuales de suministro energético en la región, destacando las limitaciones y desafíos que enfrenta. Se identifica la dependencia significativa de fuentes no renovables y se evalúa la viabilidad de integrar fuentes de energía sostenibles y limpias. A partir del diagnóstico, se propone una estrategia integral de modernización, diseñada para mejorar la eficiencia y la calidad del servicio energético en la isla. La propuesta se basa en la implementación de tecnologías renovables, como energía solar y eólica, y la optimización de infraestructuras existentes. Se busca proporcionar acceso confiable y asequible a energía para la comunidad local, reduciendo al mismo tiempo el impacto ambiental asociado con la generación y consumo energético. Este estudio aspira a contribuir al desarrollo sostenible de Isla Fuerte y aportar perspectivas valiosas para la mejora de la prestación del servicio de energía en otras Zonas No Interconectadas de Colombia.
Viticultural climate variability at Santana do Livramento, Campanha Gaúcha, Brazil
Authors: Lemos Pedro Luís Panisson Kaltbach , Kaltbach Suélen Braga de Andrade , Costa Vagner Brasil , Domingues Fabrício , Herter Flávio Gilberto
Published: August 2024

Meteorological conditions are fundamental factors in the development of viticulture anywhere in the world. Considering this, the viticultural climate and climate variability of Santana do Livramento, Campanha Gaúcha, Brazil, was characterized based on the three bioclimatic indices defined by the Geoviticulture Multicriteria Climatic Classification (MCC) System – cool night index (CI), heliothermal index (HI) and dryness index (DI) – in addition to a modified dryness index (DImodified). The observed climate variability was correlated with the three phases of the El Niño-Southern Oscillation (ENSO) – namely, El Niño, La Niña and neutral phase. El Niño events presented typically higher DI and DImodified values and lower HI values. La Niña events showed typically the opposite pattern, lower DI and DImodified values and higher HI values. Neutral conditions were characterized mostly by intermediate values for DI and DImodified as well as HI but the highest amplitude of CI values. The DImodified followed by DI and HI were the indexes presenting the highest correlation with the polarization of ENSO phases.
Floristic diversity in high-altitude wetlands of Ladakh Union Territory, Trans Himalaya, India
Authors: Bhojak Puja , Dey Dipti , Sekar K. Chandra , Thapliyal Neha , Danu Hemlata
Published: August 2024

This study records a total of 212 taxa (201 species and 11 varieties) in 131 genera and 37 families of flowering plants. The family Asteraceae dominated with 32 species and 17 genera, followed by Poaceae with 31 species and 21 genera. Twenty‑five species are recorded under different threat categories and 22 are native to the Himalayan region. Lancea tibetica Hook. f. & Thomson and Waldheimia stoliczkae (C.B. Clarke) Ostenf. are endemic to the cold desert areas of the Indian Himalayan Region. This study provides baseline data on floristic diversity for effective implementation of conservation approaches in selected high‑altitude wetlands of the Ladakh region.
The Mysterious Copper Battle Axe from the Castle Museum in Sandomierz
Authors: Rajpold Wojciech ,   Muzeum Zamkowe w Sandomierzu
Published: August 2024

In the Castle Museum in Sandomierz, there is a small copper battle axe whose place and circumstances of discovery are unknown. It is only known that this item was found in the vicinity of Sandomierz. The discussed artefact represents the Nógrádmarcal type, characterized by a distinctive haft, a ring near the haft hole, two opposing blades/arms, and a lowered horizontal arm in relation to the apex of the haft opening and the vertical blade. This form is particularly prevalent in the northern Carpathian region, especially in present-day Czech Republic and Slovakia. Additionally, similar specimens are also recorded in northern Hungary and Romania. In formal terms, this item corresponds to the C2 type according to Julie Heeb’s typology, which is numerous in the western part of the Carpathians, especially in the Czech Republic. The majority of them were discovered in contexts unfavourable to chronological studies. It is not excluded that these specimens survived until the younger Eneolithic period. It seems that the safest way to date them is to the turn of the 5 th /4 th millennium BC or the beginning of the 4th , and associate them with late influences of the Polgar cycle. The presented artefact is most likely to be seen as an import from the south-western or southern direction into the environment of the Lublin-Volhynian culture. It is another copper artefact from the Eneolithic period discovered in the Sandomierz Upland, indicating lively contacts between these areas and those located further south and southwest.
Osada tarnobrzeskiej kultury łużyckiej w Wietlinie Pierwszym, stanowisko 1, gmina Laszki
Authors: Dębiec Maciej ,   Instytut Archeologii Uniwersytetu Rzeszowskiego
Published: August 2024

Rescue archaeological research in Wietlin Pierwszy (site No. 1), which took place in 2023, led to the discovery of 18 archaeological features. Based on the material evidence, most of them can be associated with the Tarnobrzeg Lusatian culture. In addition to ceramics from the Early Iron Age, several fragments of vessels related to the Funnel Beaker culture were also found in secondary deposits. The materials obtained during the excavations confirmed the previously established chronology of the site based on surface research and revealed its scientific potential (the frequency of earthen features and relatively abundant movable material) for studying the Early Iron Age in the valleys of the Szkło and San rivers.
Clinical T1a Renal Cell Carcinoma with Solitary Diaphragmatic Metastasis in a Patient with von Hippel-Lindau Disease
Authors: Hirai Tadataka , Uka Mayu , Iguchi Toshihiro , Yasui Kazuya , Kawabata Takahiro , Umakoshi Noriyuki , Tomita Koji , Matsui Yusuke , Kobayashi Yasuyuki , Araki Motoo , Hiraki Takao
Published: August 2024

We report the case of a 38-year-old man with two von Hippel-Lindau disease-associated T1a renal cell carcinomas (RCCs) (<2 cm in diameter) which developed into a 2.5-cm solitary diaphragmatic metastatic tumor. After diagnosis using percutaneous biopsy, the diaphragmatic metastasis and two RCCs were treated by laparoscopic resection and percutaneous cryoablation, respectively. One year after treatment, the patient survived without local recurrence or distant metastasis. This report describes a rare case of RCC metastasis in VHL disease and its treatment.
MEDIDA PÚBLICA EXCEPCIONAL EM CONTEXTO PANDÊMICO
Authors: Moreira dos Santos Danilo
Published: August 2024

Os impactos negativos da pandemia afetaram de maneira significativa diversos setores da sociedade, inclusive o setor de economia criativa constituído pelo segmento de trabalhadores artístico-culturais, requerendo das administrações públicas, inclusive em âmbito municipal, medidas estratégicas específicas com foco no enfrentamento da questão e apoio aos trabalhadores afetados. Este trabalho busca identificar e analisar os resultados do Auxílio Emergencial Cultural Afonso Conselheiro executado no município de Juazeiro-BA em 2021 enquanto medida pública excepcional frente à pandemia de Covid-19, tomando como base o exame do perfil dos proponentes artístico-culturais que foram contemplados, além do contraste com o conjunto geral dos cadastradas. Através do programa Microsoft Excel foram elaborados gráficos e efetuados cálculos percentuais para qualificação das análises de base exploratória e do tipo qualiquantitativo, as quais, utilizando recursos de estatística descritiva básica, se debruçaram sobre dados oriundos do cadastro realizado pela Secretaria de Cultura, Turismo e Esportes – Seculte do município. A partir dessas análises, podem ser verificadas nuanças que permitem avaliar o caráter positivo inerente à implementação do auxílio emergencial cultural e seus impactos gerais no contexto local analisado, convergente com um amparo socioeconômico momentâneo e um pontual reforço à proteção social de trabalhadores da cultura e eventos no município, apesar da influência de idiossincrasias e óbices relacionados aos seus resultados e ao seu processo de execução a indicarem pontos de aperfeiçoamento.
A MINERAÇÃO URBANA: RIQUEZAS MINERAIS ESCONDIDAS NOS RESÍDUOS DE EQUIPAMENTOS ELETROELETRÔNICOS
Authors: Rodrigues Elisangela , Rocha Ana Daniela Gomes
Published: August 2024

MINERAÇÃO URBANA: RIQUEZAS MINERAIS ESCONDIDAS NOS RESÍDUOS DEEQUIPAMENTOS ELETROELETRÔNICOS
O papel das redes na internacionalização de empresas têxteis
Authors: Silva Dayana da
Published: August 2024

O surgimento da globalização do comércio modificou o modo de gestão das empresas. Essa expansão comercial foi possível devido aos avanços tecnológicos, que possibilitaram uma maior interação entre as pessoas e os países. Juntamente com a abertura de mercado surge a oportunidade de vender para vários países e também o desafio de enfrentar a concorrência internacional. Para enfrentar os desafios decorrentes desse cenário que se desenvolve com constantes mudanças, indivíduos e organizações se conectam formando redes de contatos para gerir seus negócios. As redes desempenham um papel importante na entrada e também na expansão dos mercados internacionais. No intuito de verificar o desempenho internacional, esse trabalho tem objetivo de analisar o papel da redes na internacionalização de empresas têxteis de Brusque.

Palavras-chave: Redes. Mercados Internacionais. Desempenho Internacional.
AVALIAÇÃO DE DIRETRIZES DE RESPONSIVIDADE EM INTERFACES WEB: UM ESTUDO DE CASO DO SISTEMA DE PLACAS VIRTUAIS DE FORMATURA DO IFRN
Authors: Souza Alessandro , Alencar Matos Sílvia Aparecida de Oliveira , Barros Arthur Pinheiro
Published: August 2024

Este artigo avaliou um conjunto de diretrizes de usabilidade para tratar aspectos específicos de responsividade na construção de websites. Para avaliar a eficácia dessas diretrizes foi realizado um estudo de caso sobre o Sistema de Placas Virtuais de Formatura do CNAT-IFRN. Os resultados alcançados demonstraram que a aplicação dessas diretrizes permitiu identificar e corrigir problemas existentes no sistema alvo, orientando o processo de reconstrução da interface em seus aspectos de funcionamento em diversos tipos de dispositivos.
The Mediatization of Religion: A Netnographic Study of Habib Husein Ja’far’s Da’wah on YouTube
Authors: Ellya Pratiwi
Published: August 2024

This study aims to examine how the mediatization of religion takes place in Habib Husein Ja’far’s da’wah through YouTube channel Jeda Nulis. Based on the framework of mediatization theory, religion is increasingly being incorporated into the logic of media. This study used a qualitative approch with the netnographic method. The findings show that the mediatization process of da'wah on YouTube Jeda Nulis occurs through adjustments to the da'wah method and its content format. Habib Ja’far displays a millennial persona and carries topics based on trends in society as his da'wah method approach. His da'wah is formed in popular content formats such as vlogs, podcasts, and talk shows. He also collaborated with popular figures who played an important role in increasing the engagement rate. From the perspective of the audience, the content of Jeda Nulis builds narratives about representing peaceful Islam and strengthening tolerance. At this phase, mediatization shows the potential transformation of da'wah in the digital era. At the same time, the mediatization of da'wah facilitates religious expressions which have implications for the emergence of hate speech in the digital space.
Do professor abstrato ao professor concreto
Authors: Peixoto Elza Margarida de Mendonça
Published: August 2024

Neste artigo são apresentados nexos entre divisão social do trabalho educativo, intensificação do trabalho docente e extração de mais valia como fundamentos e determinantes da formação e do trabalho dos professores. Nessa perspectiva, interessa a esta discussão o atual estágio de desenvolvimento da Classificação Brasileira de Ocupações, aqui, entendida como reflexo do avanço da divisão social do trabalho para o aperfeiçoamento do sistema nacional de educação, como forma objetiva da cadeia produtiva de força de trabalho naquilo que ela é relevante para o capitalista. Os argumentos desenvolvidos voltam-se à defesa da base teórica que explica a situação dos professores no Brasil, procurando pelos interesses capitalistas que conformam e modelam essa situação.
Late Diagnosis in HIV: Experience of a Portuguese District Hospital between 1998-2022 (Too Late Study)
Authors: RC de Abreu , F Duarte
Published: August 2024

Background: According to the ECDC’s latest report, Portugal has the highest incidence of HIV/AIDS and late diagnosis (lymphocyte TCD4+ count <350 cells/µL) in the European Union. Late diagnosis can significantly impact an individual’s health outcomes and the effectiveness of treatment interventions, interfering with overall health outcomes and quality of life. Objectives: Evaluate evolution of HIV diagnosis between 1998-2022 in a district Hospital comparing demographic, epidemiological, AIDS defining illnesses and mortality data. And evaluating the COVD-19 pandemic years regarding the late diagnosis impact, in this matter comparing 2020, 2021 and 2022 with 2017, 2018 and 2019. Methods: Retrospective study of HIV patients (pts) with TCD4+ <350 cells/µL at 1st visit between 1998-2018, divided into group A: TCD4+ <200 cells/ µL; group B: TCD4+ 200-350 cells/µL. Statistical analysis by Excel® from Microsoft 365®, by using the chi-squared test (χ²). Results: From a total of 1175 pts in IDS database, 649 met the criteria but due the lack of data, only 590 were admitted. From these, 63,73% (N=376) in group A and 36,27% (N=214) in B. Demographic and epidemiological characterization revealed (A vs B): male predominance of 79,52% vs 66.82% (p<0,0001); age at diagnosis<50 years 76,59% vs 84,11% (p<0,0001); transmission by heterosexual contact in 53,45% vs 50,93% (p<0,0001). At first health care encounter, 59,84% of group A had an AIDS defining illness-most commonly tuberculosis (33,33%). In a group analysis the percentage of pts in group A raised from 31,4% in 2018 to 32% in 2022. Analysis of mortality showed a death rate of 26,86% in group A versus 16,36% in group B (p<0,0001), with a mean duration from HIV diagnosis to death of 2208 days versus 2940 (p<0,0001). On average, time from first Infectious Diseases (ID) consultation to death was 1441 days in group A and 2308 in group B (p<0,0001). Analyzing before (2017-2019) and during COVID-19 (2020-2022), the prevalence of late presenters (<350 TCD4+/μl) went from 3.90% to 8.81% globally; an increase of 55.77% (23 to 52 pts), maintaining proportion of genders. During COVID-19 an increase in overall mortality was observed 26.86% vs 16.36% (group A vs B pre-pandemic) to 28.86% vs 18.92% (group A vs B pandemic) not due COVID infection. Conclusion: This study highlights the persistent challenge of late HIV diagnosis and its profound impact on patient outcomes. The demographic and epidemiological characterization underscores the need for targeted interventions to address disparities in testing and care access. The observed increase in late presenters and mortality rates during the COVID-19 pandemic underscores the importance of maintaining HIV care services amidst public health crises. Timely diagnosis, early intervention, and comprehensive care remain imperative to improve outcomes and advance towards the goal of ending AIDS as a public health threat by 2030.