bluuebunny/crossref_metadata_2025 huggingface dataset:
The Design of the Flight Corridor for the Terminal Area Energy Management Phase of Gliding Hypersonic Unmanned Aerial Vehicles
Authors: Wang Jingang , Shao Yichong , Chen Cheng , Wang Zian
Published: January 2025

This paper introduces an innovative approach to optimizing flight corridors under complex constraints, particularly focusing on the Terminal Area Energy Management (TAEM) phases of reusable vehicles, where nominal trajectories may be inadequate due to initial condition and aerodynamic deviations. Leveraging the elegant principles of symmetry, the proposed optimal flight corridor design method, based on the Lagrange multiplier technique, offers a harmonious balance between trajectory accuracy and adaptability. By describing the TAEM flight corridor through a range–altitude profile and utilizing iterative optimization to uphold physical constraints such as dynamic pressure, overload, and roll angle, this method ensures symmetrical alignment of the design parameters. Through a comprehensive analysis of aerodynamic and initial position uncertainties, this method showcases exceptional symmetry in adapting to trajectory design uncertainties. The simulation results demonstrate the resilient nature of the designed flight corridor, capable of seamlessly accommodating initial state deviations and aerodynamic uncertainties. This symmetrical optimization of flight corridors not only enhances trajectory planning and control capabilities during the terminal energy management phase, but also showcases a paradigm shift towards precision and balance in aerospace engineering. Our simulation findings underscore the efficiency of this approach by reducing the flight corridor range by 50% compared to the nominal state while maintaining robustness across deviation conditions, embodying the symmetrical resilience needed for optimal trajectory design.
Multi-Stakeholder Analysis in Building Tourism Resilience: Collaborative Governance Implementation in the Majapahit House Heritage Area, Indonesia
Authors: Basyar Muhammad Roisul , Mardiyanta Antun , Setijaningrum Erna
Published: January 2025

The Majapahit House heritage area in Trowulan, Indonesia, represents a significant initiative where local communities, government agencies, and cultural organizations collaborate to preserve traditional architecture while developing cultural tourism. This study examines how these stakeholders interact in implementing heritage tourism governance, focusing on the challenges of coordinating preservation efforts with development objectives. Through semi-structured interviews with key stakeholders and field observations, we analyze how different actors influence program implementation and outcomes. Our analysis employs interest–influence matrices to identify how stakeholders’ varying capabilities affect program success, while actor linkage analysis reveals specific patterns of collaboration and conflict in governance processes. Findings demonstrate how implementation success varies across villages based on local leadership effectiveness, resource coordination, and community engagement levels. This study reveals that successful heritage tourism development requires balancing provincial directives with community initiatives, particularly in aligning preservation requirements with local development needs. This research advances understanding of stakeholder dynamics in heritage tourism by providing a framework for analyzing collaborative governance in cultural contexts while offering practical insights for improving stakeholder coordination. Recommendations focus on strengthening institutional frameworks and enhancing coordination mechanisms between government agencies and community organizations.
Levels and Profile of Tetrodotoxins in Spawning Cephalothrix mokievskii (Palaeonemertea, Nemertea): Assessing the Potential Toxic Pressure on Marine Ecosystems
Authors: Malykin Grigorii V. , Velansky Peter V. , Magarlamov Timur Yu.
Published: January 2025

The ribbon worms of the closely related species Cephalothrix simula, Cephalothrix cf. simula, and Cephalothrix mokievskii, representing the C. simula species complex, possess high concentrations of tetrodotoxin (TTX) and its analogues in all developmental stages from eggs to adults. It has recently been suggested that the eggs and larvae of these animals can be a source of tetrodotoxins (TTXs) for other aquatic organisms. In the current study, TTXs in mature and post-spawning individuals and in the eggs of C. mokievskii were identified using high-performance liquid chromatography–tandem mass spectrometry. For the first time, the quantity and profile of TTXs that these nemerteans released into the environment during spawning were estimated. We showed that the spawning C. mokievskii females released significant amounts of TTX and 5,6,11-trideoxyTTX with their eggs; these levels were sufficient for the potential toxification of marine bioresources. The issues surrounding the monitoring of TTXs in commercial marine animals, and collecting at the sites of the spawning of nemerteans from the C. simula species complex, are discussed.
Multidrug-Resistant Acinetobacter baumannii: Risk Factors for Mortality in a Tertiary Care Teaching Hospital
Authors: Černiauskienė Kristina , Vitkauskienė Astra
Published: January 2025

Background and objectives: Due to resistance and the lack of treatment options, hospital-acquired Acinetobacter baumannii (A. baumannii) infections are associated with high mortality. This study aimed to analyze the characteristics of patients with infections caused by multidrug-resistant (MDR) A. baumannii and patients’ clinical outcomes as well as determine the risk factors for mortality in a tertiary care teaching hospital. Materials and methods: A retrospective cohort study including 196 adult patients with A. baumannii strains isolated from different clinical specimens in the Hospital of the Lithuanian University of Health Sciences in 2016, 2017, 2020, and 2021 was conducted. Data on patients’ characteristics, comorbid diseases, treatment, length of hospital and ICU stay, and outcome were collected. Carbapenemase-producing isolates were detected phenotypically. To determine risk factors for in-hospital mortality, logistic regression analysis was performed. Results: There were 60 (30.6%) women and 136 (69.4%) men with a mean age of 61.7 ± 16.6 years (range, 52–74). More than three-fourths (76.5%, n = 150) of the patients had at least one comorbid disease. The highest number of A. baumannii strains were isolated from patients hospitalized in ICUs (43.4%, n = 85). A. baumannii strains producing three types of β-lactamases were more frequently isolated from women than men (77.8% vs. 22.2%, p = 0.006). Infections caused by A. baumannii strains producing two types of β-lactamases were significantly more often treated with combination therapy than infections caused by strains producing one type of β-lactamase (78.9% vs. 60.0%, p = 0.019). Patients with A. baumannii strains producing two different types of β-lactamases (AmpC plus KPC, AmpC plus ESBL, or ESBL plus KPC) stayed significantly shorter at the ICU compared to patients with A. baumannii strains with no detected β-lactamases (median of 9, IQR 2–18, vs. median of 26, IQR 7–38, p = 0.022). Death occurred in 58.7% (n = 115) of patients. Logistic regression analysis showed that a duration of the effective antibiotic treatment of ≤6 days, invasive mechanical ventilation, combination therapy, aged >58 years, and the absence of co-infection were independent predictors of in-hospital mortality. Conclusions: MDR A. baumannii infections pose a significant threat to human health not only due to multidrug resistance but also due to high mortality. The mortality rate of patients with MDR A. baumannii infection was high and was associated with age, invasive mechanical ventilation, the duration of effective antibiotic treatment, no co-infection, and combination therapy. Therefore, it is of utmost importance to reduce the prevalence of MDR A. baumannii infections in healthcare facilities by applying preventive measures and to administer timely effective treatment once A. baumannii infection is detected.
Towards a Fluid Planning Approach in Germany: An Option for Social Fragmentation?
Authors: Tawil Maram , Reicher Christa , Krings Eva , Haydan Mehmet , Gadkar Raveena , Gavrilova Alena , Cardenas Vignes Ursula
Published: January 2025

Contemporary societies are increasingly embossed with migration. Multi-cultural and multi-ethnic communities often live side by side with host communities in cities all over the world. Significant efforts have been made to embrace the different challenges occurring at different levels, among which are the social structure and layout of such cities; however, challenges still prevail, and continue to showcase socially fragmented patches with significant relevance to everyday life. In this research, a qualitative approach will be adopted to investigate the qualities of life that hinder sound integration, and, therewith, call for new types of planning to overcome such challenges, such as fluid planning. Celebrating identities through integrating new ethnic economies in different settings has resulted in a stepping stone towards integrated solutions, leading to a more coherent and integrated community.
Effect of Hepatitis E Virus on the Male Reproductive System: A Review of Current Evidence
Authors: Kotb Ahmed A. , El-Mokhtar Mohamed A. , Sayed Ibrahim M.
Published: January 2025

Hepatitis E Virus (HEV) is a globally widespread pathogen that causes acute hepatitis infection. Beyond hepatic pathogenesis, HEV has been proven to cause several extrahepatic manifestations, such as neurological, renal, and hematological manifestations. It was also associated with mortality in pregnant females. Several studies have investigated the impact of HEV on the male reproductive system; however, the available data are limited and conflicting. Assessment of the patients’ ejaculates/semen samples revealed that HEV particles are excreted in these fluids in cases of chronic infection but not acute infection. The excreted HEV particles are infectious to in vivo animal models and in vitro cell culture. However, the effect of HEV infection on male infertility is not confirmed. One study including human samples showed male infertility associated with HEV genotype 4 infection. Studies of HEV infection in animal models such as pigs, gerbils, and mice showed that HEV infection caused distortion on the testes, damage of the blood–testis barrier, and induction of inflammatory responses leading to abnormalities in the sperm. The excretion of HEV in the semen fluids raises concerns about HEV transmission via sexual transmission. However, all available data do not confirm the transmission of HEV through sexual intercourse. This review aims to summarize and critically assess the available studies investigating the influence of different HEV genotypes on the male reproductive system, providing insights into whether HEV contributes to reproductive impairment in men.
First Molecular Identification of Entamoeba spp. in Sheep, Beef Cattle, and Dairy Cattle in Shanxi Province, North China
Authors: Wu Ze-Xuan , Xiao Han-Dan , He Yuan-Hui , Huang Shi-Bo , Li Jing , Kang Yu , Zheng Wen-Bin , Zhu Xing-Quan
Published: January 2025

Entamoeba spp. are common zoonotic intestinal protozoa, which can lead to serious intestinal diseases in both humans and animals through fecal–oral transmission, leading to significant economic losses and public health challenges. To reveal the prevalence of Entamoeba in sheep and cattle in Shanxi Province, North China, fecal samples were collected from 311 sheep, 392 dairy cattle, and 393 beef cattle from three representative counties in the northern, central, and southern regions of Shanxi Province. DNA was extracted from the fecal samples and amplified by PCR with primers targeting the nuclear small subunit ribosomal RNA (SSU rRNA) gene of Entamoeba spp., followed by the sequencing of the positive products. The overall infection rates of Entamoeba were 51.5% (160/311), 82.9% (325/392), and 79.1% (311/393) in sheep, dairy cattle, and beef cattle, respectively. Statistical analysis showed a significant correlation between the infection rate of Entamoeba and the location factor in sheep, dairy cattle, and beef cattle (p < 0.001). According to the obtained SSU rRNA sequences, several Entamoeba species, namely Entamoeba bovis, Entamoeba Ribosomal Lineage (RL) 2, Entamoeba RL4, and Entamoeba RL8, were identified. This study represents the first molecular survey of Entamoeba prevalence in sheep, beef cattle, and dairy cattle in Shanxi Province. The findings extend the geographical distribution of Entamoeba spp. and provide valuable scientific data for the prevention and control of amoebiasis in Shanxi Province.
Exploring the Role of Salt Supplementation on Milk Composition, Fatty Acids, and Insulin Response in Lactating Camels
Authors: Aljumaah Riyadh S. , Salama Ahmed A. K. , Abdelrahman Mutassim M. , Ayadi Moez , Caja Gerardo , Alshaikh Mohammed A. , Al-Badwi Mohammed A. , Matar Abdulkareem M.
Published: January 2025

Camel milk is a valuable food source with unique nutritional properties and potential health benefits. This study investigated the influence of high dietary salt on milk composition and fatty acid (FA) profile as well as insulin regulation in dairy camels. Twelve multiparous female camels were used in a crossover design with two treatments: control concentrate (CON; 1.3% salt) and high-salt concentrate (SAL; 3.9% salt). Each period lasted 3 weeks, with camels switched between treatments in the second period. The measured variables included milk yield, milk composition, blood metabolites, and insulin levels in blood and milk. The SAL group exhibited higher (p < 0.01) water consumption. Nevertheless, milk yield and composition (fat, protein, lactose) remained unaffected. Notably, SAL camels had elevated blood insulin levels (p < 0.05) compared to the CON group, suggesting enhanced pancreatic activity possibly driven by osmotic balance changes. Milk FA profiles revealed a reduction in unsaturated fatty acids (UFA, p < 0.04), particularly monounsaturated (MUFA, p < 0.05) and odd-chain fatty acids (OCFA, p < 0.05). Furthermore, lipid quality indices such as the atherogenic index (p < 0.01) and the hypocholesterolemic/hypercholesterolemic FA ratio (h/H, p < 0.01) indicated a less favorable milk fat profile in the SAL group. These findings suggest that while moderate salt supplementation may not negatively impact milk yield in dairy camels, it alters both metabolic and milk fat composition variables, with potential implications for the nutritional quality of milk.
Purification Effect and Microbial Community Analysis of Aquaculture Wastewater Using High-Efficiency and Stable Biochemical System
Authors: Su Lei , Wu Hangtao , Yang Minghui , Su Yuting , Wu Shanshan , Gao Hang , Li Yaying , Wang Dan , Lu Yusheng , Zhang Kun , Zhou Donglai , Gu Wenjie , Peng Huanlong
Published: January 2025

An adaptable, low-cost, and easy-to-operate biological treatment system for pollutant abatement in aquaculture water at the field pond scale needs to be developed. In this study, the pollutant removal capacity of a stable bioreactor for aquaculture wastewater was assessed, and the related mechanism was elucidated via an analysis of the microbial community’s characteristics and functions. The average removal efficiencies of chemical oxygen demand, suspended solids, total nitrogen, and total phosphorus were 40%, 86.22%, 38.62%, and 53.74%, respectively. The effluent quality meets the Requirement for Water Discharge from Freshwater Aquaculture Pond, SC/T9101-2007. The results indicate that the fillers under anaerobic conditions could attract Denitratisoma and unclassified_Rhodocyclaceae, promoting the denitrification reaction. This aligns with the characteristic that total nitrogen in aquaculture sewage mainly exists in the form of nitrate nitrogen. An anaerobic atmosphere helps degrade organic contaminants at liquid interfaces and remove nitrogen in the solid phase. The fillers under anaerobic conditions could attract Bacteroidota and promote the production of polysaccharides to form biofilms, which may be associated with phosphorus removal. The results indicate that the anaerobic stage can promote the formation of biofilm on the fillers to remove pollutants, thus achieving higher aquaculture sewage treatment efficiency.
Data-Based Analysis on the Economic Value of Fishery Observer Programs in International Fisheries Management: Insights from Korea’s Distant Water Fisheries
Authors: Kim Yeon-Gyeong , Go Dong-Hun , Yi Sangchoul
Published: January 2025

This study estimated the economic value of international fisheries observer programs for Korean distant water fisheries using the contingent valuation method (CVM). The model included economic factors, socio-demographic variables, and proxy variables that reflected participants’ familiarity with seafood consumption. An online survey was conducted with 16,924 participants, of whom 1000 provided usable responses (resulting in a final response rate of 5.9%). The survey results indicated that 74.2% of households were willing to pay to support international fisheries observer programs. The weighted average willingness to pay (WTP), adjusted for the participation rate, was estimated at USD 7.01 per household, leading to an annual aggregated WTP of USD 153,097,825. These findings highlight the significance of international fisheries observer programs in promoting the sustainability and effective management of Korean distant water fisheries.
Diseño de un entorno virtual para el aprendizaje de Matemáticas de alumnos de primer año de Bachillerato General Unificado en la Unidad Educativa Olmedo
Authors: Piloso Mieles Walter Alexander , Alpízar Muní Jorge Luís
Published: January 2025

Con el propósito de mejorar el proceso de enseñanza de las operaciones Matemáticas básicas en estudiantes de primer año del BGU, se llevó a cabo una investigación en tres etapas: diagnóstico, análisis de resultados y diseño de un entorno virtual. El diagnóstico inicial evaluó los conocimientos matemáticos de 44 estudiantes, seguido de una encuesta consensuada con los padres y apoderados, respondida por 30 estudiantes y entrevistas individuales con 5 docentes. Los hallazgos revelaron que los estudiantes cuentan con habilidades y disposición para utilizar recursos digitales, mientras que los docentes presentan diversidad de enfoques pedagógicos y opiniones variadas sobre los beneficios de la tecnología. Con base en estos resultados, se diseñó un entorno virtual centrado en habilidades Matemáticas básicas, el cual fue evaluado positivamente por un panel de expertos. Esta propuesta representa un enfoque innovador para personalizar el aprendizaje y fomentar una actitud positiva hacia las Matemáticas, promoviendo la inclusión y el uso efectivo de recursos digitales en el aula.
PALABRAS CLAVE: Enseñanza de Matemáticas; Tecnologías Digitales; Entorno Virtual; Aprendizaje Personalizado.
Juego de roles para promover el desarrollo de identidad y autonomía en los niños de preescolar
Authors: Zambrano Chávez Vanesa Liceth , Chica Chica Leonardo Fabricio , Zambrano Acosta Jimmy Manuel
Published: January 2025

El presente estudio se centra en el juego de roles como guía didáctica para impulsar el desarrollo de identidad y autonomía en niños de preescolar. La problemática abordada radica en la observación de ciertas dependencias y falta de autonomía en algunos niños, atribuibles a prácticas sobreprotectoras por parte de los padres. El objetivo general es diseñar una guía didáctica de juegos de roles para promover el desarrollo de identidad y autonomía en los niños de preescolar del Centro de Desarrollo Infantil “Nube de Colores” de la ciudad de Manta. La metodología tuvo un enfoque mixto, con un tipo de investigación de campo, bibliográfico y descriptivo, además del método deductivo e inductivo, para lo cual se incluyó la aplicación de encuestas a los padres de familia para identificar expectativas y necesidades, el test de Battelle, Prueba Scream para la evaluación del nivel de desarrollo de los niños y entrevistas semiestructuradas a docentes del Centro de Desarrollo Infantil “Nube de Colores” para analizar percepciones y experiencias, la muestra fue de 3 docentes, 25 niños y 25 padres de familia. Los resultados revelaron un bajo nivel de identidad y autonomía en los niños de tres años, según la puntuación del test de Battelle, lo que sugirió la propuesta de diseñar una guía didáctica de juego de roles adaptados a las necesidades específicas evidenciadas en este estudio. Dicha propuesta, fue evaluada por 12 especialistas quienes consideraron que es viable para su aplicación, por lo tanto, este respaldo sólido garantiza que la propuesta es factible.
PALABRAS CLAVE: Autonomía; Desarrollo infantil; Docentes; Identidad; Juego de roles; Preescolar.
Estrategia metodológica basada en entornos virtuales para la enseñanza de la matemática: caso unidad educativa Atahualpa, cantón Bolívar, Manabí, Ecuador
Authors: Santos Montesdeoca Ana Dolores , Fosado Téllez Osvaldo Alberto
Published: January 2025

Actualmente lograr un aprendizaje eficiente de las matemáticas sigue siendo un reto para los centros educativos y sus docentes, quienes día a día buscan cómo reforzar sus conocimientos y potenciar sus habilidades de enseñanza. El objetivo de esta investigación fue elaborar estrategias metodológicas para la asignatura de matemáticas mediante el uso de entornos virtuales de aprendizaje en el subnivel básica superior de la Unidad Educativa Atahualpa, cantón Bolívar, provincia de Manabí. Este estudio se desarrolló aplicando métodos analíticos, descriptivos y bibliográficos mediante diversas fuentes de información. Se diagnosticaron las habilidades y competencias digitales de los docentes que imparten la asignatura de matemáticas, catalogándose estas como ineficientes, fundamentalmente por la inexistencia de estrategias que ayuden en su potencialización. Estos resultados conllevaron al desarrollo de una estrategia metodológica basada en los entornos digitales para fortalecer las habilidades cognitivas de los estudiantes de este subnivel.
PALABRAS CLAVE: Entorno Virtual de Aprendizaje; TIC; Enseñanza de la Matemática; Tecnologías Educativas.
Educación ambiental: una necesidad para la formación de los estudiantes de la carrera de Pedagogía de las Ciencias Experimentales Matemática y Física
Authors: Bucarán Intriago Cindy , García Murillo Gabriel
Published: January 2025

La educación ambiental ha cobrado relevancia en el sistema educativo de muchos países, especialmente en Ecuador, debido a la necesidad de proteger sus ecosistemas y cumplir con los Objetivos de Desarrollo Sostenible de la Agenda 2030. Este trabajo tuvo como objetivo destacar la importancia de la educación ambiental en la formación de los profesionales de Pedagogía de las Ciencias Experimentales en Matemáticas y Física, como una contribución a la solución de la problemática ambiental en su contexto. El estudio se basó en una investigación descriptiva, utilizando métodos teóricos como análisis-síntesis, histórico-lógico, análisis documental y sistematización. El análisis documental, también empleado como método empírico mediante una guía aplicada a los sílabos de la carrera, permitió identificar contenidos que faciliten la inclusión de la educación ambiental. Aunque no existe una asignatura específica sobre el tema en la malla curricular, se encontraron potencialidades para integrarla. Además, una revisión de documentos legales en Ecuador confirmó que la Constitución establece la necesidad de formar a los futuros Licenciados en Pedagogía para que puedan enfrentar los desafíos ambientales y proteger el medio ambiente, dado que el país es megadiverso. Se concluye que es necesario incluir contenidos ambientales en la formación de estos profesionales, por lo que se propuso la creación de un programa de educación ambiental que permita a los estudiantes adquirir y actualizar conocimientos en esta área.
PALABRAS CLAVE: Educación ambiental; ambiente; desarrollo sostenible; Pedagogía de las Ciencias Experimentales.
Estado nutricional y anemia por deficiencia de hierro en niños atendidos en el Centro de Salud Rocafuerte en la provincia de Manabí, Ecuador
Authors: Rodríguez Véliz Ramón , Vera Palacios Jonli , Leal Montiel Jorymar
Published: January 2025

La salud de los niños es de gran importancia, ya que, los niños de hoy son los ciudadanos del mañana, su supervivencia, protección y desarrollo son el requisito previo para el desarrollo futuro de la humanidad. El objetivo de esta investigación fue determinar la prevalencia de anemia y su relación con el estado nutricional, en niños atendidos en el Centro de Salud Rocafuerte en la provincia de Manabí, Ecuador, entre octubre del 2020 y mayo de 2021. El tamaño de la muestra fue de 172: 94 niños y 77 niñas. Para analizar el estado nutricional, se realizó evaluación antropométrica. El instrumento de recolección de la información fueron cuestionarios validados por expertos. Los resultados muestran que el estado nutricional en función del peso/ talla fue 7 % bajo peso, 84,9 % peso normal, 4,7 % sobrepeso y 3,5 % obesidad. En cuanto a los valores de hemoglobina, predominó la normalidad, observándose una media de 11,9 ± 0,9 g/dl. Solo 19 % padece de anemia leve, con parámetros de hemoglobina entre 10,00-10,9 g/dl. En conclusión, los niños ecuatorianos en estudio, tienen un estado nutricional normal (89,0 y 84,9 %) y solo un porcentaje muy pequeño muestra malnutrición por déficit y por exceso. En cuanto a los valores de hemoglobina, predominó la normalidad.
Factores de riesgo de anemia y estado nutricional en menores de 5 años atendidos en el Centro de Salud Rocafuerte, Manabí, Ecuador
Authors: Rodríguez Véliz Ramón , Leal Jorymar , Vera Jonli , Ávila Cristóbal
Published: January 2025

La salud de los niños en la primera infancia juega un rol fundamental para alcanzar el potencial en la edad adulta, la inseguridad alimentaria es la causa más común de la desnutrición y la anemia. El objetivo fue determinar factores de riesgo de anemia y estado nutricional en niños de 24 a 59 meses atendidos en el Centro de Salud Rocafuerte, Manabí, Ecuador. Bajo un estudio transversal y correlacional que incluyó 172 niños sanos, ambos géneros, que asistieron al control (octubre 2019-abril 2020). El estado nutricional se valoró con datos de: peso/talla, talla/edad, utilizando balanza y estadiómetro portátil. Para anemia se obtuvieron datos de examen de laboratorio desde las historias clínicas en una ficha de registro. Se aplicó la Encuesta de Estratificación del nivel socioeconómico del Instituto Ecuatoriano de Estadísticas y Censo, además de un cuestionario de datos demográficos, antecedentes de salud, nutrición, vivienda e higiene del niño y conocimientos de la madre sobre la anemia. Los datos fueron procesados con SPSS versión 25, para la prueba de hipótesis se aplicó Chi cuadrado y Odss Ratio, 95 % de confianza. Se encontró alteraciones en los indicadores nutricionales talla/edad (11 %), bajo peso (7 %), malnutrición por exceso (8,2 %); anemia (20 %) y desnutrición (11 %). Los factores de riesgo para la anemia fueron el sexo (mujeres: 14 %, p = 0,04), condiciones sanitarias (adecuadas: 15 %; p = 0,01), conocimiento sobre prevención de la enfermedad (si conoce: 13 %; p = 0,003). Se concluye que el estado nutricional lo más llamativo fue el retardo de talla. Así mismo, el factor de riesgo asociado a la anemia fue el conocimiento de la madre sobre la enfermedad y para la desnutrición las medidas de higiene personal.
Habilidades sociales en el aprendizaje de los estudiantes de educación básica: una revisión sistemática
Authors: Guevara Leguía Charles Frank , Bernardo Santiago Grisi , Bernardo Santiago Madelaine
Published: January 2025

La actual indagación de revisión sistemática aborda la temática de la habilidad social en los aprendizajes de los escolares de formación básica. La finalidad primordial es analizar y proveer una perspectiva integral y real de la investigación existente sobre la habilidad social en los aprendizajes de los escolares de formación básica. Ante esto, se efectuó una exploración sistemática de artículos de indagación divulgados desde el 2019 hasta el 2023, la aplicación de criterios de exclusión e inclusión. La exploración bibliográfica en bases electrónicas de información relevante fue consultada en WoS, Ebsco, Scopus, y Scielo, se escogieron 21 artículos, persiguiendo las pautas del modelo Prisma. Los resultados de la revisión sistemática muestran la significancia del aprendizaje cooperativo, el uso de tecnología y recursos digitales, el teatro y los programas de preparación específicamente diseñados para promover estas habilidades. Además, se resalta la conexión entre la habilidad social y el desempeño formativo, la adaptación social, el bienestar emocional y la inclusión educativa. La discusión del artículo se centra en analizar los hallazgos de los estudios revisados y destacar la trascendencia de la habilidad social en el progreso formativo de los escolares. Se mencionan las teorías y enfoques que respaldan estos hallazgos para futuras investigaciones y prácticas educativas. En conclusión, se proporciona una perspectiva integral de la investigación existente sobre la habilidad social en los aprendizajes de los escolares de formación básica. Se enfatiza el alcance de la habilidad social para el éxito académico, la adaptación social y la tranquilidad de los alumnos.
A model for roundwood of planted forests
Authors: Correa e Castro da Costa Thomaz , França Luiz Fernando
Published: January 2025

The market prices wood in volume, mainly at the source, the forest, in the form of standing wood. In this way the forestry producer does not have the quantification of the wood products that can be extracted from the trees. The information on wood products, as well as their valuation, can help in a closer evaluation of the real value of the wood, for a negotiation, providing equitable profits for both and, also informing companies that buy forests, the proportion of pieces most sold in total and the amount of unused wood. The software to quantify round and sawn wood, contains a module for segmenting trees into round pieces for the dimensions requested by the user. With the measurement of the diameter and height of the trees and shape data, the pieces of roundwood are calculated. This paper presents its validation, with 8-year-old eucalyptus clones I224 and VM1 trees, in crop-livestock-forest and monoculture systems. The errors between logs and calculated logs by the software did not exceed 20%.
KARAKTERISTIK GRANIT DI GIRIHARJO, LAMPUNG SELATAN
Authors: Br Ginting Elpani , Hutabarat Alex Saputra , Simanjuntak Abner Dametua
Published: January 2025

This study aims to identify the characteristics of granitoids in Giriharjo, Lampung Selatan, which formed due to crust thickening from the collision between the Woyla volcanic arc and the western Sumatra terrain. The primary focus is on Granodiorite Sulan (Kgdsn), which has received limited research attention. The methodology employed is descriptive-analytical, involving field observations and laboratory analyses using petrographic microscopes. Four granodiorite samples were collected from an area of 9 km². The results indicate two types of granitoid rocks: Tonalite and Granodiorite, with variations in mineral composition and texture. Granodiorite is characterized by a grayish-white color and a massive structure, while Tonalite is predominantly composed of plagioclase. Microscopic analysis reveals suture and intergrowth textures that indicate the influence of plastic deformation. This research contributes significantly to the understanding of Sumatra's geology and the potential for mineral resource exploration in the future. By addressing gaps in knowledge regarding the petrological characteristics and tectonic processes that shaped Granodiorite Sulan, this study hopes to enhance the understanding of magmatic and tectonic processes in this region, providing valuable insights for future geological explorations.
ANALISIS KOMPREHENSIF KARAKTERISTIK GEOLOGI DAN GEOKIMIA MINERALISASI PORFIRI CU-AU DI PRIGI, JAWA TIMUR
Authors: Arisna Firmansyah Augie , Radhitya Adzan Hidayah  , Subhan Arif
Published: January 2025

This research focuses on understanding porphyry Cu-Au deposits in the Oligocene-Miocene Sunda-Banda magmatic arc, specifically in Prigi Village, Watulimo District, Trenggalek Regency, East Java. The region, located on an ancient volcanic circular structure within this metallogenically significant arc, holds potential for porphyry Cu-Au deposits. The study uses surface geological mapping, laboratory analyses (petrography, mineragraphy, AAS), and report preparation. Alteration in the area is classified into five zones based on mineral associations: propylitic (chlorite-epidote±carbonate), potassic (magnetite-biotite-sericite±chlorite), SCC (sericite-clay-chlorite-magnetite), phyllic (sericite-illite±pyrite-quartz), and argillic (illite-smectite±quartz). Ore minerals include sulfides like chalcopyrite, bornite, covellite, chalcocite, magnetite, pyrite, and gold, and oxides such as malachite, hematite, goethite, and jarosite. AAS analysis shows copper content of 0.09% and 0.02%, and gold content of 0.9 ppm and 0.04 ppm in samples LP 93 A and 94, respectively. The study area also features porphyry stockwork veins, classified as type A (granular quartz±pyrite-chalcopyrite), type M (quartz-magnetite±chalcopyrite), type B (comb quartz-centerline chalcopyrite-bornite-pyrite), type C (chalcopyrite±quartz), and type D (pyrite-quartz). The porphyry deposits experienced three stages of alteration and mineralization: early mineralization with diorite intrusion and prograde alteration, intermineral phase with porphyritic andesite intrusion, and a late retrograde alteration phase linked to the final intrusion.
DAMPAK PENGGUNAAN HEAD-MOUNTED DISPLAYS TERHADAP POSTUR DAN AKTIVITAS OTOT: SEBUAH TINJAUAN PUSTAKA
Authors: Ngurah Mahaswara Putera Dewa , Ardiyanto Ardiyanto*
Published: January 2025

The use of Head-Mounted Displays (HMDs) has rapidly expanded across various sectors, including entertainment, education, healthcare, and training. HMDs provide real-world simulations that enhance learning processes, surgical simulations, and doctor training, and are effective for industrial training. However, the use of these devices can negatively impact posture and muscle activity, posing a risk of increased muscle strain and injury to the musculoskeletal system. This study aims to evaluate the effects of HMD use on posture and muscle activity by analyzing articles published between January 2019 until September 2024. Through the PRISMA method, 15 final articles from Scopus database were analyzed, including aspects of HMDs, physical characteristics, experimental characteristics, and impact of use on posture and muscle activity. The results indicate that the use of non-ergonomically designed HMDs can increase muscle strain in the neck, back, and eyes, as well as affect body posture. Several factors influencing this impact include headset weight, visual effects, field of view, and user body movement. The analysis showed that lighter and ergonomically designed headsets can reduce the risk of musculoskeletal injuries and improve user comfort. Visual effects and field of view of HMDs also play a key role in reducing muscle strain, especially through visual feedback and postural interaction with an optimal field of view. Ergonomic adjustments, such as user body movement, can help alleviate discomfort and reduce injury risk. This study’s findings provide recommendations for developers to consider ergonomic factors in HMDs design in VR or AR to create safe and comfortable user experiences.
PENGEMBANGAN SIMULASI VIRTUAL MESIN SIZING SEBAGAI ALTERNATIF METODE PEMBELAJARAN PRAKTIKUM TEKNOLOGI PERSIAPAN PERTENUNAN
Authors: Verawati Nurazizah  , Andrian Wijayono  , Fahmi Fawzy Rusman  , Nurfadilah Ikhsani  , Reski Alya Pradifta  , Wilda Murti
Published: January 2025

This study has developed a virtual simulation of a sizing machine as an alternative approach for practical learning in weaving preparation technology. This simulation was created by emulating the interface and functionalities of an industrial sizing machine. This study applies the five-stage Research and Development (R&D) ADDIE model developed by Robert Maribe Branch in 2009. The first stage is analysis, then design, development, implementation, and evaluation. The design and development method of this simulation employs graphic design applications CorelDraw, Adobe Illustrator, and Animate CC for component production, user interface assembly, encoding, movie testing, and publication. A Likert scale questionnaire with a 1–5 scale is used to evaluate the user experience and determine whether the simulation content is adequate. Using the validity and practicality criteria, the percentage value is then calculated from the entire score. According to the study's findings, the simulation sizing machine's concept and operation were given a 100% validity percentage with a very valid category, and the degree of fit between the simulation's features and the industry-standard sizing machine was given a 90% validity percentage with a very valid category. Additionally, with a percentage of 79.45%, the user evaluation results of the virtual simulation of the sizing machine indicated that this program was feasible to use. It is possible to employ the produced virtual simulation of the size machine as an alternate approach to hands-on learning in weaving preparation.
PENGUKURAN GELEMBUNG MIKRO MENGGUNAKAN ALGORITMA HOUGH CIRCLE TRANSFORM
Authors: Dinda Salsabiila Padmakirana  , Yusnan Hasani Siregar*  , Taufik Ibnu Salim  , Frida Agung Rakhmad
Published: January 2025

An analysis of the Hough transform algorithm as a microbubble measurement method with manual annotation and accuracy testing methods was conducted. Existing microbubble measurement methods are unable to measure bubble sizes smaller than 150 μm and have equipment that is not compact enough. The Hough transform algorithm may be a more optimized microbubble measurement method than the existing microbubble measurement methods. This research aims to apply and test the Hough circle transform algorithm as a microbubble measurement method. This research was conducted with 5 samples, each sample lasted 10 seconds. In this study, it can be concluded that the Hough Circle Transform algorithm, as a method for measuring microbubbles, is able to detect bubbles with sizes ranging from 0.11 to 0.36 µm, with an average size of 0.20 µm. The average accuracy across the five data samples is 98%.
STUDI RANCANG BANGUN ALAT PENGUKUR BOILING WATER SHRINKAGE PADA BENANG TEKSTIL
Authors: Rusman Fahmi Fawzy , Ikhsani Nurfadilah , Wijayono Andrian , Nurazizah Verawati , Pradifta Reski Alya , Murti Wilda
Published: January 2025

Boiling water shrinkage measurement is a critical method in the textile industry for evaluating the dimensional stability of yarn, particularly during finishing processes which involve hot water. This study aims to design and develop a yarn shrinkage measurement device using the boiling water shrinkage method, referring to ISO 18066:2015 standard. The prototype is designed to be compact and energy-efficient, utilizing easily accessible smaller materials and components using a microcontroller for manual temperature control. The device was tested on 100% acrylic yarn, with results showing accuracy comparable to industrial-grade testing instruments used by PT Hanil Indonesia. A t-test analysis revealed no significant difference between the developed device and industrial testing tools, indicating that the prototype can provide reliable and accurate measurement results. This research offers a practical, cost-effective solution for yarn quality control in both the textile industry and educational institutions, enhancing testing capabilities for textile materials.
STUDI PEMANFAATAN CAMPURAN MATERIAL WASTE PADA PRODUKSI BENANG POLYESTER: PERBANDINGAN BLEND RATIO TERHADAP KUALITAS
Authors: Hasna Khairunnisa  , Innayah Firda , Lestari Eki Dian , Ardiyanto Agus
Published: January 2025

Textile industry is a big industrial sector which produces wastes in its processes, including the initial process of textile, the yarn spinning manufacturing. Yarn spinning process converts raw material of fibers into yarn, it also produces waste in each stage of the production. Waste generated from the blowing to winding process has various characteristics and properties. This study aims to identify waste generated in the polyester yarn spinning process and make a categorization of waste, based on the characteristics of waste: whether it can be reused or cannot be reused (called Unused). Waste sorting process parameters are also determined to be able to produce waste material that is ready to be reused for the yarn production. The mixing of waste material and original non-waste material is then used for production with 3 combinations of blend ratio, showing the percentage of waste content in each material mixing. After the mixing process, material is manufactured to produce finished yarn. Yarn quality testing is performed to test the effect of waste material mixtures on the yarn quality itself. The quality parameters involved are yarn unevenness, neps and trash contents. The test results show that the results of the material mixture for the 3 type of blend ratio meet the company’s quality standards. To conclude, it is as expected that the lower the waste percentage, the higher the yarn quality. However, in order to optimize waste usage, as high as 3.2% waste still can be utilized while maintaining the yarn quality standards.
ANALISIS KARAKTER DAN MANFAAT LORONG SAYUR DI KOTA YOGYAKARTA SEBAGAI RUANG TERBUKA HIJAU
Authors: Angga Mahardika Syahrul Putra  , Jafron Wasiq Hidayat*  , Kasiyati
Published: January 2025

The Spatial Planning Law No. 26 of 2007 and the Regulation of the Minister of Agrarian Affairs and Spatial Planning No. 14 of 2022 state that a city should have a minimum of 30% green open space of its total area. Yogyakarta City, which has an area of 32.85 square kilometers, only has an area of 23.52% green open space. In order to meet the 30% Green Open Space coverage level in accordance with the law, the Yogyakarta City Government has a Lorong Sayur program as one of the solutions to the Green Open Space problem in Yogyakarta City. This research aims to identify the form and role of Lorong Sayur using the literature study method obtained through journal articles, proceedings, government documents, regulations, and spatial data. With this method, the results of the study found that Lorong Sayur is a form of urban agriculture in the city of Yogyakarta vertically by utilizing land on the side of the alleys or neighborhood road. Lorong Sayur has an ecological impact because it is able to minimize non-organic waste, is beneficial in changing people's lifestyles, and is able to improve the socio-economic life of the people of Yogyakarta City.
OPTIMALISASI SUPPLY CHAIN MANAGEMENT MENGGUNAKAN INTEGRASI BIG DATA DAN ARTIFICIAL NEURAL NETWORK UNTUK PREDIKSI PERMINTAAN PRODUK UMKM
Authors: Edy Prayitno  , Edi Iskandar  , Aloysius Agus Subagyo  , Ivan Jaka Perdana
Published: January 2025

Supply Chain Management (SCM) menjadi salah satu tantangan utama bagi Usaha Mikro, Kecil, dan Menengah (UMKM), terutama dalam menghadapi fluktuasi permintaan produk. Prediksi permintaan yang tidak akurat dapat menyebabkan masalah serius seperti kelebihan atau kekurangan stok, yang berujung pada inefisiensi operasional. Penelitian ini bertujuan untuk mengoptimalkan prediksi permintaan produk UMKM dengan mengintegrasikan teknologi Big Data dan Artificial Neural Network (ANN) dalam SCM. Data penjualan historis dan perilaku konsumen selama tiga tahun terakhir digunakan sebagai dataset. Setelah dilakukan preprocessing dan normalisasi data menggunakan metode Big Data, model ANN dilatih untuk memprediksi permintaan produk. Hasil prediksi dibandingkan dengan metode konvensional seperti regresi linier dan moving average. Hasil penelitian menunjukkan bahwa model ANN memberikan tingkat akurasi prediksi yang lebih tinggi dengan Mean Absolute Percentage Error (MAPE) sebesar 3.45%, lebih rendah dibandingkan regresi linier (7.89%) dan moving average (10.56%). Ini menunjukkan bahwa ANN mampu memproses data yang kompleks dan memberikan prediksi yang lebih akurat, yang pada akhirnya dapat mengurangi risiko SCM, terutama dalam hal pengelolaan inventaris dan distribusi. Penelitian ini menyimpulkan bahwa integrasi Big Data dan ANN merupakan solusi efektif untuk meningkatkan efisiensi SCM di sektor UMKM. Meski demikian, terdapat tantangan dalam hal infrastruktur teknologi dan literasi digital yang perlu diatasi agar UMKM dapat mengadopsi teknologi ini secara lebih luas
ANALISIS LAPORAN KEUANGAN UNTUK MENGETAHUI GRAFIK PERKEMBANGAN PT PERTAMINA EP DI JAKARTA SELATAN PADA PERIODE 2019-2021
Authors: David Fajar Prabowo  , Maria Regina Nansi  , Marselinus Yan Tuturop  , Muhammad Syafiq Ulinnuha
Published: January 2025

Tujuan dari studi ini adalah dalam mengevaluasi kinerja keuangan PT Pertamina EP Jakarta Selatan tahun 2019 sampai dengan tahun 2021 berdasarkan rasio likuiditas, solvabilitas, dan profitabilitas. Penelitian ini bertujuan untuk mengetahui kinerja keuangan PT Pertamina EP Jakarta Selatan tahun 2019-2021 berdasarkan parameter likuiditas, solvabilitas, dan profitabilitas.Bidang usaha utama dalam industri minyak dan gas adalah PT Pertamina EP. Metode dokumentasi juga digunakan dalam strategi pengumpulan informasi lainnya. Berdasarkan temuan penelitian yang dilakukan, rasio likuiditas, yang ditentukan oleh rasio lancar, menyusut setiap tahun antara tahun 2019 yang merupakan tahun yang sangat baik dan tahun 2021 yang merupakan tahun yang buruk. Rasio utang terhadap ekuitas dan rasio utang terhadap aset digunakan untuk menghitung rasio solvabilitas. Dibandingkan dengan rasio utang terhadap warisan, statistik rasio utang terhadap warisan pada tahun 2019–2021 dilaporkan buruk. Setiap tahun, rasio ekuitas turun; pada tahun 2019 dianggap oke; pada tahun 2020, kondisinya cukup baik; dan di tahun 2021 kurang bagus. Sebaliknya, rasio profitabilitas yang dihitung memanfaatkan Net Profit Margin menunjukkan hasil yang tidak menentu sebab di tahun 2019 sangat baik, namun menurun menjadi cukup baik pada tahun 2020 sebelum meningkat menjadi kriteria sangat baik pada tahun 2021.