bluuebunny/crossref_metadata_2025 huggingface dataset:
Improving Students' Learning Outcomes with The Set Method on Sound Material in Class 4 SDN Kutasari 5
Authors: Riyadi M. Ilham Rahman , Sofyan Alwi
Published: January 2025

This study aims to improve student learning outcomes using the Student Engagement Time (SET) method on Sound material in grade 4 SDN Kutasari 5. The SET method is an active learning method that encourages students to be actively involved in the learning process by providing time for reflection and asking questions answer in class. This study used a classroom action approach with a cycle design consisting of two learning cycles. Research participants were grade 4 students at SDN Kutasari 5, totaling 20 students. Data collection was carried out using formative tests and observations. Data were analyzed using a qualitative descriptive analysis. The results of the study show that the use of the SET method can improve student learning outcomes in Sound material. Improved learning outcomes can be seen in the indicators of understanding concepts, process skills, and scientific attitudes. The average value of formative tests in cycle I was 71.5 and increased to 83.5 in cycle II. In conclusion, it can be concluded that the use of the SET method can improve student learning outcomes in Sound material in class 4 SDN Kutasari 5. Suggestions for further research are the use of the SET method can be developed with a wider variety of learning techniques and strategies to improve student learning outcomes on different materials.
The Influence of Learning Styles on The Learning Outcomes of Students in Grade 5 at SDN Ciporos 3
Authors: Isnawati Febri , Azizah Amalia Nurul
Published: January 2025

This study aims to determine the effect of learning styles on the learning outcomes of grade 5 students at SDN Ciporos 3. The research method used is quantitative using survey techniques and questionnaires as data collection tools. The sample for this study was 60 grade 5 students who were randomly selected from the student population at SDN Ciporos 3. The results showed that there was a significant influence between learning styles and learning outcomes of grade 5 students at SDN Ciporos 3. Visual and kinesthetic learning styles had a positive effect on learning outcomes, while auditory learning styles did not have a significant effect.
The Existence of Conventional Television Faces the Trend of Subscription Video Services (Over-the-Top)
Authors: Wijaya Erris RF , Rahmanto Andre N , Naini Albert Muhammad Isrun
Published: January 2025

Conventional television has been a medium of information and entertainment for decades. Along with the development of technology, entertainment media have become diverse. Traditional television faces competition, one of which is Over-the-Top (OTT) services or subscription video content via the internet. Some OTT service providers in Indonesia are Netflix, Ilflix , Mola TV, Vidio, VIU, Catchplay, Disney+Hotstar, and RCTI+. Throughout Covid-19, OTT users increased due to higher entertainment needs. This paper aims to provide an understanding of the existence of conventional TV facing OTT trends and how the media users’ consumption patterns are changing. A systematic literature review (SLR) was carried out by collecting data and analyzing related research to OTT and TV usage for the last five years. The results show a shift in media consumption patterns among the younger generation, while the older generation tends to be more passive towards new media. The number of OTT users is increasing, but it has not been able to replace television completely. Instead of replacing, OTT is more of a complementary media or alternative media. This is due to subscription fees and technology adaptation are not within everyone’s reach. On the other hand, OTT spoils the audience in terms of flexibility, variety of the shows, and attracts the younger audience segment which is the driver of the increase in the number of users.
Children’s Literature as Learning Media to Improve Children’s Language Skills
Authors: Gultom Uli Agustina , Setyami Inung
Published: January 2025

This article aims to describe children's literature as a means of learning language skills for children. Children's literature is literature aimed at children. Children's literature is literature that reflects the feelings and experiences of children through children's views on topics that are close to the child's world, including humans, fauna, and flora. Through literature, a child indirectly learns language skills as well. Children's literature is also important because it teaches young learners a variety of lessons. It also gives them opportunities to engage with literature; teaches them an appreciation for their cultural heritage; fosters emotional intelligence and creativity; fosters the growth and development of the children’s personality and social skills; and conveys important literature from one generation to the next. Children's literature needs to be developed and taught from an early age so that young learners have good personalities and are knowledgeable. It can be a valuable resource, particularly in language teaching. Learning language skills is applied through the introduction of three literary genres, namely: 1) poetry in the form of children's songlines and children's rhymes; 2) prose in the form of fantasy fairy tales and folk tales; and 3) drama in the form of stories with simple dialogues.
The Effect of Using Clustering Strategy by Random Card Media on The Students' English Vocabulary
Authors: Harisma Rita , Siregar Irma Isroyani , Agustin Vivin
Published: January 2025

This research was carried out to investigate the effect of using a clustering strategy by random card media on the students’ English Vocabulary. The population of this research was the seventh-year students of SMP Muhammadiyah 05 Medan 2019-2020 which consisted of 64 students. By using total sampling, the total sample of this research was 64 students. The sample of this research was all of the population. The sample was divided into two groups, class VII -1 was for an experimental group that used Clustering Strategy and class VII-2 was for a control group that using Lecturing strategy. This research was using an experimental research method. The test was taken from the students’ worksheets. The test was given to the experimental and control groups in a multiple-choice test consisting of 20 items to know the significant effect of using the clustering strategy and lecturing strategy. The finding of the research showed that there was a significant effect of using the clustering strategy by random card media on the students' English vocabulary because tobserve was higher than ttable (3,16 > 1,670). It meant that the alternative hypothesis (Ha) was accepted.
Metacognitive Strategy Implementation In Teaching English Tenses To College Students: A Classroom Action Research
Authors: Tambunsaribu Gunawan
Published: January 2025

The purpose of this study is to conduct some steps using a metacognitive strategy for teaching English tenses in order to develop college students’ skills in mastering English writing using three English basic tenses namely simple present tense, simple past tense, and simple future tense. This strategy is considered very effective and implemented by the researcher to increase students’ skills in learning English tenses. This is classroom action research. The students themselves participated in solving their problems related to the materials given based on the syllabus of the English subject. Participants of this research are the students, 33 students, of Gunadarma University who are learning Business English 1 in the academic year of 2020/2021. The result of this study, problem-based learning through some steps using a metacognitive strategy, has been well implemented including the completeness of the lesson plans before teaching each material. Based on the findings, the implementation of a metacognitive learning strategy can improve student achievement by above 100% in mastering English tenses.
Preservation of the Batik Industry in Indonesia as Part of the National Identity
Authors: Nuriyanto Lilam Kadarin
Published: January 2025

Culture in general can be interpreted as matters relating to the human mind. Culture is the identity or characteristic of a nation as a differentiator with other nations. Identity becomes the pride and even the main attraction of a nation. One of the cultures owned by the Indonesian people is batik which is the result of a combination of art and technology. Various kinds of batik philosophically and meaningfully will be found in various customs and cultures that develop in Indonesia. Indonesia has several batik motifs related to local culture. Several factors that influence the birth of batik motifs include geographical location. This paper aims to find out how efforts are being made to preserve the batik industry in Indonesia. Data collection techniques using library methods related to various matters relating to batik culture. Some of these findings include the development of a promotion system to increase sales, and efforts to regenerate batik experts carried out by business actors with the assistance of programs from the government.
Education in The Islam Nusantara Perspectives
Authors: Indianto S Dimas , Azizah Intan Nur , Sunhaji Sunhaji , Nurfuadi Nurfuadi
Published: January 2025

This study aims to introduce the concept of Islamic learning with a distinctive archipelagic personality, as a conceptual proposition for the growth of today's citizens. This is a logical consequence of the meaningful position of learning as a forum for the regeneration of citizens. This research is a literature research. Data collection techniques by reviewing the literature related to the research theme. Furthermore, the data found will be reduced according to the research theme for further conclusions drawn. This study provides an understanding that the development of Islam Nusantara cannot be separated from Nusantara Islamic Education. From the birth of Islam in the archipelago, Islamic education has positioned itself as an important part of education, but it is still in a simple and very local environment. Over time, Islamic education in the archipelago has experienced a shift, progress, change and innovation which of course continues to grow today.
Jogja Ora Didol : a Discourse of Resistance to Domination Through Music Norman Fairclough's Critical Discourse Analysis Study
Authors: Kinasih Cahyaratri Hari , Susanto Susanto , Warto Warto
Published: January 2025

The freedom of media since the death of the New Order has made its development so significant, especially in Indonesia. Artists have a platform to create creative ideas through media such as creating movies or music. The issue of power that is not in favor of the lower middle social class makes music present as a tool to respond to difficult situations and even become a tool of resistance to the government or those in power. This research is a qualitative study using Norman Fairclough's critical discourse analysis theory which has three dimensions in the text of the song Jogja Ora Didol by Jogja Hip-Hop Foundation. The musical background of Jogja Hip-hop Foundation and the language used in the song contain resistance. This study aims to see the extent to which the song Jogja Ora Didol influences and builds the power of resistance to the domination that exists in Yogyakarta. The song Jogja Ora Didol was created in conjunction with the many protests of empowered citizens against the massive construction of hotels in the Yogyakarta area. Resistance discourse is viewed from three levels, namely text, discourse-practice, and socio-cultural. This research aims to 1) Represent the text of the song Jogja Ora Didol, 2) The background of the creation of the song and 3) the influence of the song to create and build resistance. The results of this study show that the resistance of word units and metaphors form a unit of song text. In discourse practice, resistance is formed from the process of text production and consumption. Finally, in the sociocultural order, it is the macro factor that gives influence after the presence of Jogja Ora Didol song.
Negotiating The Social Body: The Autonomy and Subjectivity of Javanese Female Singer “Sinden” in Eka Uget-Uget
Authors: Febriansyah Vici Duta , Habsari Sri Kusumo , Farhah Eva
Published: January 2025

Sinden originated from the word "pasindhian" which means have many very treasury will song or singing (singing song). Sinden also called waranggana, "wara" means someone who is sex female and "anggana" means alone. Swarawati sued have ability broad communication, beautiful body and face, as well as ability sing songs Java. This post discuss subjectivity and autonomy body sinden through figure artist Eka's woman is passionate. how Sinden Eka Uget negotiate and seek subjectivity in art show puppet skin. Research results this show that subjectivity Eka Uget-Uget's body, how is it? still could show autonomy her body instead Becomes Eka Uget-Uget objek object rather Becomes Subject in the her body. He can make her body as subject. In Thing this, he alone Becomes the controlling actor her body alone. He could have position high bargaining and negotiation when he obey or entertain public. Paper this use method qualitative with collected data from Eka Uget-Uget's YouTube videos and several re-uploaded videos. through study this show that sinden entitled for appreciate and express her body alone without must intervened by other forces outside her body.
Improving Organizational Citizenship Behavior Through Buddhist Leadership in Student Activity Units in Higher Education
Authors: Pratiwi Virna Dita , Suryanadi Juni , Saputri Vike Aprilianin Marwintaria , Ardianto Hendra , Sutawan Komang , Kusuma Candra
Published: January 2025

Higher education shapes students' skills, character, and morals, including participation in student organizations such as Buddhist UKM. However, Buddhist UKM at Bandar Lampung City College faces challenges, such as low member participation and ineffective leadership. This research investigates the effect of Buddhist leadership towards the Organizational Citizenship Behavior (OCB) and its implications for Buddhist student organizations (UKM). This study approach and method developed with a quantitative and survey. The instrument in the research used a questionnaire. The population was 308 respondents in total, and as many as 175 respondents were used as samples taken using the Slovin formula. The analysis test in  research used path analysis. This study shows a significant favorable influence between Buddhist leadership and (OCB). It means that the better the Buddha's leadership motivates members to contribute voluntarily and actively to the organization's activities, further enhancing OCB, which plays a role in organization to achive the success and effectiveness.
Sentence Analysis in Online Newspapers Radar Banyumas Headline News Edition 23-29 April 2024
Authors: Seftiani Helmi , Setiyawan Dwi , Putri Arista Etani
Published: January 2025

This study analysis sentence structure in the headlines of the online newspaper Radar Banyumas from the April 23-29, 2024 edition. The research focuses on identifying syntactic functions, roles, and categories in sentences to understand the grammar used by Radar Banyumas in conveying information. This study employs a qualitative descriptive method with a syntactic approach, and data is gathered through observation and documentation techniques. The analysis reveals two main types of sentence structures, namely simple and compound sentences. Ten instances of simple sentences and eight instances of compound sentences were identified. The syntactic structure is analyzed based on elements such as subject, predicate, object, and adverb, as well as syntactic roles such as agent, action, result, and location. This research aims to contribute to the understanding of sentence structure usage in mass media, particularly in online newspapers, which is valuable in linguistic and journalism studies.
How Does Mindfulness Matter in Interpersonal Communication with Students at School?
Authors: Yana Indra , Burmansah Burmansah , Gautama Sidartha Adi , Susanto Susanto , Kasrah Rini
Published: January 2025

Abstract: This study aims to determine the Influence of mindfulness on student interpersonal communication in a Tangerang, Banten Province private school. The problems that occur to students are not entirely correct when talking to their friends, ignoring their friends, and having difficulty expressing their feelings when communicating and interacting. Also, communicating is just talking without knowing the truth. This study uses a quantitative approach with a survey method. The population in this study is 140 junior high school students, with a sample of 105 students using the Slovin formula. The research was conducted in one of the Buddhist private schools in the Tangerang area, Banten Province, with junior high school student respondents. This study uses path analysis. The study's results showed a significant favorable influence between mindfulness and interpersonal communication, which illustrates the significant role of mindfulness as the basis for forming students' mindful character and strengthening students' interpersonal communication at school. This research is expected to be a recommendation for schools to develop mindfulness in developing students' character, especially in strengthening their interpersonal communication.
Experiencia de uso de la inteligencia artificial en la educación superior: caso Tecnológico Nacional de México
Authors: Niebla Zataraín Virginia Berenice , Beltrán Lizárraga María Guadalupe , Niebla Zataraín Jesús Manuel
Published: January 2025

La inteligencia artificial (ia) ofrece múltiples beneficios como herramienta para mejorar y transformar la educación derivada de la personalización de la enseñanza. En estas últimas generaciones ha tenido un rol importante en el desempeño escolar. El objetivo de esta investigación fue valorar la experiencia de estudiantes de educación superior del Tecnológico Nacional de México campus Los Cabos respecto al uso de la inteligencia artificial, tomando la metodología mixta para guiar la investigación. Los resultados indicaron que los estudiantes utilizan la ia en su proceso de aprendizaje, principalmente para consultar información. Entre las tecnologías más utilizadas, se encuentra el chatbot y las herramientas generativas, donde se encontraron ventajas en su utilización sobre el acceso a la información y aprendizaje personalizado; entre las desventajas se identificó la ética del tratamiento de la información y la necesidad de contar con ciertas habilidades para su uso eficiente. Sobre la experiencia en general, se manifestó que el tratamiento de la información es un punto relevante en relación con temas de plagio y la información obtenida, ya que consideraron que se dan redundancias y respuestas no actualizadas.
Turkey and the US in the Middle East: A Case for Alliance Change
Authors: Altunışık Meliha
Published: January 2025

Turkey-US relations in the Middle East have evolved significantly in recent years. Initially based on shared threat perceptions and strategic outlooks during the Cold War, the alignment became characterized by divergences on some issues after the Gulf War in 1991. Their relationship in the Middle East has even become hostile in recent years. Turkey’s increased regional aspirations and evolving threat perceptions in the Middle East, framed within an ontological security narrative, have strained bilateral ties. This shift is compounded by divergent worldviews influenced by domestic political changes in both countries. Despite these challenges, the alliance persists within NATO, albeit with complexities arising from the interplay of external pressures and internal dynamics. This
article explores these dynamics using a Neoclassical Realist framework to explain how Ankara’s evolving threat perceptions and ontological security concerns have reshaped Turkey-US relations in the Middle East amid changing global and regional contexts.
Seepage and Suction Characterization of Shale Reservoirs for Field Engineering Purposes
Authors: Yang Ye , Wang Hongyan , Liu Zhiqiang
Published: January 2025

Shale gas reservoir has the characteristics of low porosity and permeability, so it can only be put into development by hydraulic fracturing in engineering. However, the current research on the relationship between flowback rate and production is still unclear, so it is necessary to conduct a deeper study on reservoir imbibition characteristics. In this study, a mathematical model is put forward to guide the imbibition experiment, and finally a simple method of engineering research scheme of reservoir imbibition characteristics in the study area is obtained. This method relies on the working steps of “grey correlation analysis → imbibition experiment → sampling inspection” and obtains the following conclusions. When the core water saturation of the reservoir in the study area is less than 30%, the water in the pores is bound water, and it begins to hinder the seepage channel. This conclusion can guide the setting of backflow rate in engineering and continue to compare fracturing fluids with different formulations with the help of the current test bench in the next research. On the premise of considering the influence of shale hydration on microscopic pore structure, the influence of fracturing fluid system on shale imbibition is further discussed.
Relación entre percepción y actitud frente a la vacuna COVID-19 en padres de niños menores de 12 años en la institución educativa de Lima
Authors:   , Vilchez Lizondro Esmeralda Katherine , Aponte Escurra Kati
Published: January 2025

Objetivo. Determinar la relación entre percepción y actitud frente a la vacuna COVID-19 en padres de niños menores de 12 años en una institución educativa de Lima. Materiales y métodos. El estudio fue aplicativo de enfoque cuantitativo, diseño no experimental correlacional de corte transversal; los instrumentos utilizados fueron el “Cuestionario de Percepción Frente a la Vacuna COVID-19” y la “Escala de Actitudes frente a la Vacuna COVID-19 en padres ACVC” los cuales fueron aplicados a una muestra de 251 progenitores de una entidad educativa de ambos sexos localizado en el distrito de Villa El Salvador. Resultados. El análisis descriptivo se identificó que el 49.8% de los padres tienen una percepción favorable frente a la vacuna COVID-19 en infantes de 12 años; por otro lado, la actitud frente a la vacuna fue indiferente 45%; en el análisis bivariado se determinó relación entre las variables percepción y actitudes frente la vacuna en los padres de familia encuestados con el Test Chi cuadrado (χ²= 23.104; p<0,001) y con la prueba de Somers se precisó que la relación es positiva y con un nivel de predicción moderada (d=.369; p<0.001). Conclusión. Existe relación entre la percepción y las actitudes frente a la vacuna COVID-19 de los padres con hijos menores de 12 años.
Precios de transferencia en el impuesto a la renta en una empresa de servicios médicos, Lima - 2021
Authors:   , Verastegui Lima Jhoanna Lucia
Published: January 2025

El principal objetivo de esta investigación fue determinar la incidencia de los precios de transferencia en la determinación del Impuesto a la Renta (IR) durante el periodo 2021, en una empresa que ofrece servicios médicos con sede en Lima. La metodología aplicada fue de enfoque cuantitativo, de tipo básico y un diseño no experimental, descriptivo. Se recolectó datos de fuentes secundarias como información contable de la empresa, particularmente el estado de resultados y las operaciones entre vinculadas. Además, se simularon cinco operaciones de precios de transferencia para calcular el valor de mercado, empleando como técnicas de procesamiento de análisis de datos, el cálculo del rango intercuartil y la interpretación de los estados financieros. Luego de estimar los valores de mercado, los resultados indicaron que las operaciones de alquiler de inmuebles cumplían con el principio Arm's Length, al encontrarse los precios pactados dentro del rango intercuartil. Sin embargo, las operaciones de cobro de intereses por préstamos otorgados no cumplieron con dicho principio, ya que las tasas de interés estaban por debajo del rango intercuartil. Finalmente, se concluyó que, para las operaciones de cobro de intereses por préstamos concedidos, no se estableció una base impositiva real del Impuesto a la Renta, por lo que se recomienda realizar ajustes mediante el reparo en la declaración jurada anual.
Inmovilización de plomo y cadmio en suelos agrícolas contaminados por la actividad minera mediante la aplicación de biochar de excremento de gallinas y residuos orgánicos de cultivos
Authors:   , Ordoñez Alvarado Karry Yanel
Published: January 2025

El objetivo de la investigación fue evaluar la eficiencia en la inmovilización del plomo y el cadmio en suelos agrícolas contaminados por la actividad minera mediante la aplicación del biochar de excremento de gallina y residuos orgánicos de cultivos. Para ello se realizó tres tratamientos con diferentes dosis de biochar de 10%, 15%, 20% y dos controles de comparación; uno con suelo contaminado sin biochar; el otro con suelo orgánico con biochar. Los resultados con mayor eficiencia de inmovilización de Pb y Cd después del tratamiento con el biochar fueron con el T1EG para cadmio; T2EG con y T1RO para plomo. En los resultados de inmovilización de Pb y Cd para los diferentes tratamientos con biochar de excremento de gallina, se determinó que los tratamientos 1 y 2 fueron los más eficientes y para los tratamientos con biochar de residuos orgánicos el tratamiento 1 fue el más eficiente en el suelo. Realizando comparación entre los dos tipos de biochars, el que tuvo mayor eficiencia de inmovilización de Pb y Cd fue el biochar de excremento de gallina con dosis del 15% en los diferentes tratamientos de biochar teniendo también resultados en el pH y conductividad eléctrica en el suelo. Adicionalmente, se cultivó Lactuca sativa (lechuga) como indicador del suelo evaluándose crecimiento y germinación de las plántulas. Realizando un análisis estadístico se dedujo que para los tratamientos con biochar de excremento de gallina, los parámetros que están asociados con la altura de la plántula son pH, CE y plomo y para los tratamientos con biochar de residuos orgánicos de cultivo fue el cadmio.
Calidad de servicio y su relación en la satisfacción del cliente en la oficina del equipo comercial de SEDAPAL de Villa El Salvador 2023
Authors:   , Valdiviezo Torres Carlos Enrique , Dieguez Raa Karla Alexandra
Published: January 2025

Prestar un servicio y hacerlo eficiente en función de la percepción del cliente son temas cruciales para las empresas públicas y privadas en la actualidad. Se busca el ofrecer servicios eficientes de alta calidad para lograr la retención esperada del cliente cubriendo sus necesidades y expectativas para fomentar recomendaciones positivas. En el sector público se hace complejo cubrir las expectativas del cliente debido a los protocolos implementados de forma general que no visualizan las características propias de cada grupo o sector. Esto hace que surjan dificultades en el servicio que se brinda, reparaciones tardías, variaciones en la calidad y dificultades de facturación generando malestar entre los consumidores. En este contexto, se llevó a cabo una investigación que analizó la relación de la calidad del servicio con la satisfacción del cliente en SEDAPAL, empresa estatal de servicios de agua en Perú. Esta empresa con numerosas quejas sobre el servicio brindado, los cobros excesivos, los plazos de atención y la falta de orientación al cliente. El estudio no experimental, de enfoque cuantitativo, con una muestra de 363 clientes seleccionados de un listado de atenciones presenciales en ventanilla durante el último trimestre de 2023. Los hallazgos mostraron que el servicio en la oficina de SEDAPAL del distrito de Villa el Salvador cubre las expectativas de los clientes por debajo del estándar, con una regresión lineal de 0.18 entre las variables evaluadas que respalda lo mencionado. Esto indica que el servicio sigue siendo un factor crítico, y se deben implementar estrategias para mejorar la calidad del servicio en un entorno competitivo, con un enfoque centrado en el usuario.
Variación estacional en el número y patrones de atención diario de la colonia de guanayes (Phalacrocorax bougainvillii) en la isla San Lorenzo
Authors:   , Reategui Ribeiro Bruno Rodolfo
Published: January 2025

La isla San Lorenzo, ubicada frente a la costa central de Perú, no está protegida por la Reserva Nacional Sistema de Islas, Islotes y Puntas Guaneras, y está bajo la jurisdicción de la Marina de Guerra del Perú. Esta falta de protección limita los esfuerzos de conservación de las especies de aves productoras de guano, especialmente el cormorán Guanay (Phalacrocorax bougainvillii), que es importante tanto ecológica como económicamente. Este estudio consistió en un monitoreo intensivo del cormorán Guanay utilizando drones durante un año y cámaras de intervalo de tiempo durante nueve meses para evaluar las variaciones estacionales en la abundancia y los patrones de presencia diaria en relación con factores ambientales y humanos. Los modelos lineales indicaron que la temperatura superficial del mar (TSM) influenció positivamente la abundancia de los cormoranes, mientras que la anomalía de la temperatura superficial del mar (ATSM) la afectó negativamente, lo que sugiere que las condiciones térmicas atípicas podrían reducir la disponibilidad de alimentos, especialmente de anchovetas. Además, la pesca industrial de anchovetas tuvo un impacto significativo en la dinámica de la colonia de cormoranes, con los barcos pesqueros cercanos a la isla correlacionando con fluctuaciones en la población de aves, lo que resalta la competencia por los recursos alimenticios. Los cormoranes mostraron un patrón diario consistente de mayor presencia alrededor de las 13:00 horas, lo que indica que la isla funciona como un sitio crucial de descanso durante las horas más cálidas. Este estudio ofrece el primer registro contemporáneo detallado sobre la ecología y el comportamiento del cormorán Guanay en la isla San Lorenzo, subrayando la necesidad urgente de implementar medidas de conservación para mitigar los impactos humanos y apoyar la sostenibilidad de las poblaciones de aves productoras de guano en la región.
Understanding Human Communication Patterns with LLMs: A Study of Short Conversations in Autistic Children
Authors: Yang Yahan , Cho Sunghye , Covello Maxine , Parish-Morris Julia , Lee Insup
Published: January 2025

Automated systems that analyze short conversation samples could offer valuable insights into autistic children's real-world social communication competence while highlighting opportunities for growth. In this study, we explore the potential of using large language models (LLMs) to assess social interaction quality during casual conversations that include autistic youth. We focus on evaluating the ability of LLMs to predict conversation quality, with the long-term goal of informing tailored communication support strategies that promote optimal social outcomes. Results underscore the need for caution when using LLMs to inform clinical decision-making in autism.
Using the Halopriming in Sunflower Seeds for Alleviation and Tolerance to Salt Stress
Authors: Orunsolu Ibrahim Olajide , Pereira Aline Aparecida Silva , Bernardes Mateus Moreira , Neves Tais Teixeira das , Bicalho Elisa Monteze
Published: January 2025

The growth and development of sunflower plants (Helianthus annuus L.) can be limited by salinity stress. The damage and changes caused by this stress can occur from germination to final production, depending on the tolerance of the species and salt concentrations. Therefore, techniques have been developed to promote greater seed vigor and seedling development in these conditions. In this study, we aimed to understand the responses and changes in sunflower seedlings promoted by the application of halopriming in seeds. For this, sunflower seeds were subjected to priming with 50µM NaCl and control (without priming) and, sown in soil containing NaCl at concentrations of 0mM, 60mM, 120mM and 240mM. When presenting four fully expanded leaves, seedlings were collected and evaluated content of pigments of the photosynthetic apparatus, proteins, the marker of oxidative stress (MDA), osmoregulators such as proline and sugars and the enzymes of the antioxidant system ascorbate peroxidase (APX) and superoxide dismutase (SOD). Furthermore, growth parameters in leaves and roots were evaluated. Seedlings from primed seeds presented physiological and growth strategies to tolerate salinity. There was an increase in the length and dry matter of the roots and with the increase in saline concentrations there was consequently an increase in the levels of photosynthetic and accessory pigments. In addition, there was an increase in macromolecules and osmoregulatory molecules. In conclusion, halopriming of seeds promoted greater tolerance of seedlings grown under different salt concentrations.
Predictors of Impaired Treatment Outcome in COVID-19 Patients with Acute Pulmonary Embolism - Single Center Observational Study From Serbia
Authors: Adzic-Vukicevic Tatjana , Racic Milan , Tovarisic-Racic Nikolina , Laban-Lazovic Marija , Radmilovic Jovana
Published: January 2025

Background: COVID-19 disease caused by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) is characterized by hypercoagulable state that results in an increased risk for embolic and thrombotic vascular complications. Incidence of pulmonary embolism (PE) in COVID-19 varies between 20-30%.
Purpose: To determine predictors for treatment outcome in patients with COVID-19 and its associations with clinical and laboratory parameters.
Materials and methods: A retrospective observational single-center study was conducted between 1st of September 2021 and 24th of December 2021 involving 2111 patients admitted to the COVID Hospital "Batajnica", University Clinical Center of Serbia, Belgrade. Among them, 100 patients (4.74%) got diagnosis of pulmonary embolism by computed tomography pulmonary angiography (CTPA). Patients were divided in two groups. Study group (100 patients) with COVID-19 and PE and control group (100 patients) with COVID-19 but without PE.
Results: According to multivariate regression analysis, predictors of impaired outcome in COVID-19 patients are age (p<0.001, OR 1.134, 95% HR 1.062-1.211), C reactive protein level (CRP) (p=0.043, OR 1.006, 95% 1.000-1.013), invasive mechanical ventilation (p<0.001, OR 58.72, 95%HR 13.784-254.189), pulmonary embolism (p=0.025, OR 3.718, 95% HR 1.183-11.681), and hospitalization in intensive care unit (p=0.012, OR 9.673, 95% 1.660-56.363).
Conclusion: We report increased mortality and mechanical ventilation rates in COVID-19 patients with acute PE. Older age, elevated level of CRP, hospitalization in ICU, and PE present independent predictors for impaired outcome in COVID-19 patients.
Secure Sybil Attack Detection and Prevention in Distributed Wireless Sensor Networks using Hybrid APIT Localization Scheme combined with Quantum Key Distribution
Authors: Ahamad Firoj
Published: January 2025

Applications of wireless sensor networks (WSNs) such as geographical routing, location estimation, and target tracking require details about the location of the sensor nodes. There are several techniques based on range free localization such as DV-hop, centroid methods, SeRLoC, HiRLoc and APIT methods are available for localizing the sensor nodes. However, it is very essential for ensuring the sensor nodes that they can identify exact locations in WSNs. In general, wireless networks are more sensitive to security attacks due to the communication through wireless shared medium. Some of the common and frequent security attacks in WSNs are Jamming attacks, Sinkhole attack, Selective forwarding attack, Wormhole attack, Black hole attack, and Sybil attacks. Among these popular attacks, the Sybil attack is of the highest priority vicious security threat in WSN. Sybil attacks are characterized by their ability to forge multiple identities that have the power to deteriorate the localization process and augment the localization accuracy. This paper presents a hybrid Sybil free APIT (SF-APIT) localization approach combined with quantum key distribution (QKD) technique to detect the popular Sybil attack in WSNs. The major aim behind this work is to completely prevent the Sybil nodes in WSNs using APIT localization and quantum cryptography. Simulation results favor about the better performance of proposed approach for Sybil attack detection. This detection method is fully based on an special the approach of Received Signal Strength (RSS) in a distributed wireless localization environment.
Multifaceted Enhancement of Piezoelectricity and Optical Fluorescence in Electrospun PVDF- ceria Nanocomposite
Authors: Shehata Nader , Nair Remya , Jain Ankur , Gamal Mohammed , Hassanin Ahmad , Noman Sara , Shyha Islam , Kruczała Krzysztof , Saad Marwa , Kandas Ishac
Published: January 2025

Piezoelectric nanocomposites have become increasingly popular in the field of energy harvesting systems. An investigation into PVDF electrospun nanocomposite membrane doped with varying weight percentages of Ce 3+ is presented. A blue shift in the bandgap of the ceria NPs was found by optical characterisation using absorbance analysis, which also enhanced UV absorption in the PVDF polymer. At some additive doses, luminosity analysis demonstrated an incremental fluorescence impact. But above a certain point, additional increases seemed to have quenching effects, which decreased fluorescence. FTIR examination of the composite nanofiber membrane showed that the inclusion of NPs increased the amount of β sheets; this was especially optimized at a 5% concentration of ceria NPs in the PVDF solution. This novel ultrasensitive PVDF with ceria 5wt % nanogenerator produced a maximum of 9 V at an applied load of 3 N at a frequency of 1.5 Hz whereas pure PVDF generated only 3 V which clearly proves the enhanced pizoactivity of PVDF Ceria based nanomembrane. The formed oxygen vacancies according to tri-valent cerium ions, which have been showed through optical characteristics, supports the nucleation of PVDF chains around ceria NPs. The resultant PVDF/ceria nanomembrane demonstrated a remarkable maximum power density of 89 mW/m2, demonstrating its load-bearing capability. With its dual functionality as an optical sensor and an energy harvesting unit, this adaptable nanocomposite shows potential for use in multifunctional devices.
Detection of mutated KRAS, TP53, CDK2A, and SMAD4 in tumor cell-free DNA of Brazilian pancreatic adenocarcinoma patients using next-generation sequencing
Authors: Marin Anelis Maria , Timoner Branca Engel , Araújo Diogo Dias , Uno Miyuki , Alves Maria José Ferreira , Chammas Roger , Namur Guilherme Naccache , Wosniaki Denise Kusma , Canzian Federico , Blanes Lucas , Zanette Dalila Lucíola , Aoki Mateus Nóbrega
Published: January 2025

Pancreatic adenocarcinoma (PDAC) is one of the most lethal cancer types worldwide, with early diagnosis being challenging due to nonspecific symptoms that are often noticed only when the tumor reaches a large size. Liquid biopsy has emerged as a promising technology for cancer detection, where the identification of tumoral cell-free DNA (cfDNA) using sensitive methodologies can identify genetic mutations, allowing for tumor diagnosis, prognosis, and therapeutic approaches. In this study, we detected mutations in KRAS, TP53, CDK2A, and SMAD4 in the cfDNA of 55 pancreatic adenocarcinoma patients, using a total of 133 blood samples and next-generation sequencing (NGS). We found that extraction from 5 mL of plasma provided the minimum yield of tumor cfDNA for NGS in 69.18% of samples, highlighting the need for cfDNA concentration. Using NGS, we identified 11 pathogenic variants across 13 samples from 11 patients: 9 patients had mutated KRAS, 4 had mutated TP53, and 4 had mutated SMAD4. Additionally, we discovered a SMAD4 variant not previously associated with PDAC, which was significantly correlated with patient survival. Our data describe and discuss the properties of cfDNA extraction and yield for NGS and its clinical application. We demonstrate that liquid biopsy using NGS for cfDNA targeting KRAS, TP53, CDK2A, and SMAD4 represents a promising alternative for the early diagnosis and genetic profiling of PDAC, with implications for prognosis and targeted therapy.
Synthesis and Characterization of Carboxylated Chitosan Nanocrystals from Shrimp Shell Biowaste using Reduced Chemical Volume: Structural and Antibacterial Properties
Authors: Memon Hafeezullah , Samarawickrama Rumesh , Wijayapala Samudrika , Fernando Annesly Nandana , Bandara Geeshan Pasindu
Published: January 2025

Shrimp shell biowaste used as a precursor effectively helps solve environmental problems related to waste management and provides a sustainable way to create valuable materials. This study investigates the synthesis and characterization of Carboxylated Chitosan Nanocrystals (ChsNCs) from shrimp shell biowaste while reducing the required chemical volumes. The process started with chitin synthesis from shrimp shells, followed by a controlled oxidation and carboxylation process to synthesize ChsNCs. The characterization of the synthesized ChsNCs began with the calculation of yield percentage to evaluate the efficiency of the synthesis process. Moreover, comprehensive characterization of synthesized ChsNC was conducted using Scanning Electron Microscopy (SEM), Energy Dispersive X-ray (EDX) analysis, X-ray Diffraction (XRD) spectroscopy, Thermal Analysis (TGA/DTA) and Fourier Transform Infrared (FTIR) spectroscopy to evaluate the morphological features, elemental composition, structural properties and thermal behaviour of the synthesized samples. The antibacterial properties of synthesized ChsNC were assessed against four bacterial strains using the well-diffusion method. The results show that the yield percentage and structural characterization confirmed the successful synthesis of ChsNC with reduced chemical volumes. Moreover, the synthesized ChsNC exhibits significant antibacterial activity, indicating larger inhibition zones at higher concentrations. The novelty of this research is the effective conversion of marine by-products of shrimp shell bio waste into ChsNCs with strong antibacterial properties by reducing the required chemical volumes. This study opens the way for broader applications of ChsNCs in biomedical and environmental fields, indicating a practical approach to developing biofunctional nanomaterials.
Migration behaviour, wintering areas and conservation biology of brown skuas breeding in the subtropical Amsterdam Island
Authors: Delord Karine , Lebrun Anne-Sophie Bonnet , Cherel Yves , Ribout Cécile , Guillou Gaël , Bustamante Paco , Barbraud Christophe
Published: January 2025

Invasive non-native species are a major threat to seabirds, leading to the implementation of numerous eradication campaigns. However, eradication can also affect non-targeted species. There are concerns over the fact that the invasive mammal eradication using poisonous bait planned on Amsterdam Island might affect negatively the local population of subtropical brown skuas Stercorarius antarcticus hamiltoni. Here, movements of 21 adult brown skuas breeding at Amsterdam Island, southern Indian Ocean, its most northerly breeding site were studied during the non-breeding period using geolocation, in order to provide relevant information for conservation prior to the eradication program. Post-breeding movements of brown skuas vary considerably, ranging from residency on the breeding grounds to long-range migrations to reach distant northern non-breeding zones in the Southern Hemisphere. Most individuals remained in the Indian Ocean (with the exception of one that wintered in the Tasman Sea), targeting areas along a continuum from the subantarctic to the tropics. Wintering grounds were generally situated in productive dynamic upwelling waters or frontal systems, with brown skuas avoiding the less productive area of the South Subtropical Gyre in the Central Indian Ocean. Inter-individual differences were not fully explained by sex: if males and females exhibited differences in activity metrics, they did not differ in duration or distance reached during the non-breeding period. Feather isotopic values confirmed that the birds mainly moulted their body feathers in the wintering area. The low δ15N values of feathers grown in mixed subtropical-subantarctic waters suggest that skuas feed on low trophic level prey in these areas. Overall, our results provided relevant information for conservation, and in particular helped identify the optimal period for scheduling land-based operations for eradicating introduced species on Amsterdam Island.
Energetics and IR spectroscopy of Pb5(AsO4)3X (X = F, OH, Cl, Br, I) synthetic apatite phases
Authors: Puzio Bartosz , Majzlan Juraj , Dachs Edgar , Benisek Artur , Lempart-Drozd Małgorzata , Manecki Maciej
Published: January 2025

In this work, we measured heat capacity and enthalpy of formation of synthetic mimetite phases with composition Pb5(AsO4)3Cl0.8(CO3)0.1 Pb5(AsO4)3F, Pb5(AsO4)3Br0.8(CO3)0.1, Pb5(AsO4)3OH0.86(CO3)0.07, and Pb5(AsO4)3I0.45OH0.35(CO3)0.1. Heat capacity has been measured using relaxation calorimetry and differential scanning calorimetry in the temperature range of 2–298.15 K. The standard third-law entropy of phases in question, derived from the low-temperature heat capacity measurements, is S°298.15K = 638.9 ± 4.5, 627.8 ± 4.4, 639.7 ± 4.5, 630.5 ± 4.5 and 637.7 ± 4.5 J mol− 1 K− 1, respectively. The measured enthalpies of formation derived from acid solution calorimetry are − 3068.7 ± 9.4, -3001.4 ± 3.5, -2963.4 ± 9.2, -2919.1 ± 9.1, and − 2936.3 ± 8.7 respectively. Some of the thermodynamic values deviate from previously determined data, most likely because of carbonate substitution in our samples.
Psychiatric Disorders and Adverse Life Events as Suicidality Predictors in Disadvantaged Youth from a Leading Institution of Mental Health: A Machine Learning Approach
Authors: Marquez-Caraveo Maria Elena , Eguiarte Blanca Estela Barcelata , Moreno-Macías Hortensia , Murata Chiharu , Perez-Barron Veronica
Published: January 2025

Suicide continues to be a major public health concern among youth globally, particularly in low- and middle-income countries. However, predictive studies focusing on marginalized populations remain limited. This study aimed to analyze the contribution of psychiatric disorders and adverse life events on suicidality within a clinical sample of economically disadvantaged Mexican youth. A total of 127 inpatient adolescents, aged 10 to 17 years, completed the MINI-KID interview to assess psychiatric disorders and suicidality and the Life Events Questionnaire for Adolescents. Machine learning techniques included classification tree, random forest, XGBoost and logistic regression. The mean area under the ROC curve of the classification tree, random forest, XG-Boost, and logistic regression models was .796, .820, .737, and .776, respectively. This analysis identified affective disorders and social, family, and health adverse life events, particularly losses, and victimization, as critical factors in suicidality. Addressing adolescent suicidality entail evaluating psychiatric disorders, and adverse events, with a particular focus on low-income families receiving public mental health care, especially in the context of developing countries.