bluuebunny/crossref_metadata_2025 huggingface dataset:
Efecto de una intervención educativa en el tabaquismo en adolescentes
Authors: Hernández Enríquez Francisco Javier , Robledo González Mónica , Martínez Fernández Sergio Carlos , Ruiz Hernández Carolina , Gonzalo Giovanny Silva Enríquez
Published: February 2025

Antecedentes: Un factor que conlleva al tabaquismo en adolescentes es la falta de información y capacitación, por lo que se deben realizar intervenciones para disminuir el riesgo. Objetivo: Determinar el efecto de una intervención educativa en el tabaquismo en adolescentes. Métodos: Se realizó un estudio de tipo analítico, observacional, cuasiexperimental, longitudinal, prospectivo y homogéneo. Con una muestra probabilística de 91 participantes con criterios de inclusión, exclusión y eliminación. Se realizó una evaluación pre y post intervención, se aplicó el instrumento susceptibilidad del consumo del tabaco y su alfa (0.88). Posteriormente se analizó con pruebas no paramétricas.  Resultados: De acuerdo a una intervención educativa, los adolescentes con familias con núcleo no integrado, disminuyeron significativamente el riesgo de tabaquismo, el cual se representó con un puntaje de 201 clasificado con un (39%) de riesgo al tabaquismo. Al recibir la intervención educativa los adolescentes presentaron un riesgo del tabaquismo con un puntaje de 164 (30%); disminuyendo un 9% de riesgo personal al tabaquismo, bajando de un riesgo medio a un riesgo mínimo.  Conclusión: La Intervención educativa demostró tener resultados positivos para la prevención del tabaquismo en adolescentes, el instrumento de Susceptibilidad de tabaquismo en adolescentes, nos demostró una significancia estadística. Esta investigación fue de gran beneficio para los adolescentes, se disminuyó factores de riesgo, mejorando la toma de decisiones en adolescentes con familias con núcleo desintegrado.
Integración de componentes de la EA en el currículo colombiano: una mirada desde los DBA y los EBC en áreas fundamentales de educación media
Authors: Firigua Bejarano Juan David , Firigua Bejarano Mónica Yulieth , Porras Lugo Mirta Yuley , Herrera León David Steven
Published: February 2025

La educación ambiental (EA) es clave para formar ciudadanos comprometidos con la sostenibilidad. Este estudio analiza la integración de los componentes de la EA en los Estándares Básicos de Competencia (EBC) y Derechos Básicos de Aprendizaje (DBA) en la educación media colombiana. De esta manera, el objetivo de esta investigación es evaluar la presencia de conocimiento, preocupación, actitud y comportamiento ambiental en el currículo, identificando fortalezas y áreas de mejora. Se realizó un análisis de contenido de los EBC y DBA, categorizando las dimensiones clave de la EA. Los resultados muestran una base conceptual sólida en conocimiento ambiental, pero evidencian brechas en la promoción de actitudes y comportamientos proambientales. Aunque existen esfuerzos por sensibilizar a los estudiantes, la conexión entre teoría y práctica es limitada. La baja representación de elementos que fomentan el comportamiento ambiental destaca la necesidad de metodologías pedagógicas activas que impulsen acciones concretas. Se recomienda adoptar enfoques participativos y proyectos interdisciplinarios que fortalezcan la formación ambiental integral, facilitando la transición del conocimiento hacia la acción y contribuyendo al desarrollo de ciudadanos responsables y comprometidos con el medio ambiente.
Estrategias Pedagógicas para la Gestión Integral de Residuos Sólidos y el Fortalecimiento de la Cultura Ambiental en Estudiantes de Sexto Grado de la Institución Educativa Pumbí Las Lajas, Pumbí del Municipio Roberto Payán, Nariño
Authors: Blandón Quejada Feiber , Landázuri Sinisterra Fausto
Published: February 2025

El mal manejo de residuos sólidos es en parte el contribuyente de la contaminación ambiental agudizando el flagelo del deterioro de fuentes hídricas y perdida de diversidad natural a nivel mundial, en este sentido las instituciones educativas, en concreto las del Departamento de Nariño la comunidad científica realiza esfuerzos para mitigar el impacto negativo ambiental generado por la contaminación por residuos sólidos. En este escenario, está investigación tuvo como objetivo, Diseñar estrategias lúdico-pedagógicas para promover el manejo de residuos sólidos en estudiantes de grado 6° de la Institución Educativa Pumbí Las Lajas, en el Municipio Roberto Payán, Nariño. La metodología elegida para este trabajo tiene un enfoque cuantitativo, se aplicaron instrumento a 21 niños para avaluar el conocimientos y valoraciones respecto a la contaminación por residuos sólidos. Aunque, los estudiantes reconocen que la institución tiene un problema de contaminación ambiental, y lo relacionan con los residuos sólidos; no son conscientes del daño que este genera al medioambiente. En este sentido, esta investigación pretende el diseño e implementación de un plan de gestión de residuos sólidos a partir de estrategias lúdico-pedagógicas en los estudiantes de sexto grado de la Institución Educativa Pumbí Las Lajas, Municipio Roberto Payán, Nariño; a partir del diseño, implementación y seguimiento, permitió que los estudiantes sean propiciadores y generadores del mensaje para una apropiada reducción de la contaminación ambiental del entorno escolar, en la población circundante y el entorno en general. Las estrategias lúdico-pedagógicas fueron herramientas que se articularon con los procesos de aprendizaje. Fue así como, a partir de las mismas, los niños adquirieron conocimientos, desde de la creatividad aplicada en procura de un mejor ambiente y a la adecuada disposición de los residuos sólidos, en consonancia, con la reducción de la contaminación ambiental producida y que es la problemática que se presenta en el entorno escolar. Se concluye que la estrategia pedagógica si aportó a la sensibilización de los estudiantes y a la actuación acorde a la formación ambiental sostenible. Estos resultados se espalda con el registro de observaciones.
Impacto del cambio climático en la seguridad alimentaria y estrategias de adaptación
Authors: Minchala Hidalgo Raúl Ricky , Mendoza Hidalgo Ángel Cesar , Hidalgo López Carmen Rosario
Published: February 2025

El manuscrito denominado "Impacto del cambio climático en la seguridad alimentaria y estrategias de adaptación" analiza las repercusiones del cambio climático en los sistemas alimentarios a nivel mundial y propone tácticas para mitigar sus efectos perjudiciales. Dentro de un escenario de incre-mentada susceptibilidad a eventos climáticos extremos, el estudio examina cómo la modificación de patrones climáticos, el incremento de temperaturas y la fluctuación en las precipitaciones afec-tan la producción agrícola, el acceso a alimentos y la estabilidad de los sistemas alimentarios. El estudio adopta un enfoque multidimensional, examinando datos a nivel global y local acerca de la correlación entre el cambio climático y la seguridad alimentaria. Incorpora una metodología mixta que combina análisis cuantitativos de rendimientos agrícolas con evaluación cualitativa fundamen-tada en estudios de caso en regiones en situación de vulnerabilidad. Los descubrimientos subrayan que los cultivos fundamentales, tales como el maíz, el arroz y el trigo, han experimentado una re-ducción media del 10% en su rendimiento durante las últimas dos décadas en regiones afectadas por sequías prolongadas y olas de calor extremo. Además, las comunidades rurales, especialmente en naciones en vías de desarrollo, afrontan retos considerables para sostener su acceso a alimentos debido al incremento en los precios y la reducción en los recursos hídricos disponibles. El docu-mento enfatiza la relevancia de instaurar estrategias de adaptación que incorporen tecnologías agrí-colas resilientes, tales como cultivos resistentes al estrés hídrico y al calor, junto con políticas orien-tadas a promover la diversificación de los sistemas productivos. Adicionalmente, se resaltan inicia-tivas locales exitosas, tales como la rehabilitación de terrenos deteriorados y la implementación de sistemas de riego eficaces, que han evidenciado su eficacia en la mitigación de las repercusiones del cambio climático. Sin embargo, se subraya la necesidad de complementar estas estrategias con enfoques globales que fomenten la cooperación internacional, inversiones en innovación tecnoló-gica y el robustecimiento de políticas públicas que privilegien la sostenibilidad alimentaria. Para concluir, el cambio climático constituye una amenaza directa para la seguridad alimentaria a nivel mundial. Sin embargo, a través de estrategias de adaptación inteligentes y sostenibles, es factible atenuar sus efectos. Se exhorta a los responsables de la toma de decisiones a emprender acciones inmediatas para asegurar la resiliencia de los sistemas alimenticios frente a los retos climáticos del siglo XXI.
Comparative study on manufacturing metal-composite vs. metal-ceramic prosthetic restorations – case presentation
Authors:   “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania, Amza Oana-Elena , Nica Maria Emanuela ,   “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania, Perieanu Viorel Stefan ,   “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania, Burlibasa Mihai ,   “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania, Serbanescu Cristina Maria ,   “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania, Caministeanu Florentina ,   “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania, Popescu Mircea ,   “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania, Burlibasa Liliana ,   Faculty of Biology, University of Bucharest, Romania, Perieanu Madalina Violeta ,   “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania, Stetiu Andreea Angela ,   “Lucian Blaga” University, Sibiu, Romania
Published: February 2025

A mixed prosthetic restoration combines the strength provided by the metal component with the aesthetic appearance very similar to that of natural teeth provided by the physiognomic component. The metal component is made of dental alloys (noble, stainless Ni-Cr, Co-Cr, etc.), and the physiognomic component can be made of materials such as ceramic masses, composite diacrylic resins, etc. This material presents a comparative study of the manufacturing technology in the case of metal-composite versus metal-ceramic prosthetic restorations.
Design a Stable an Intelligent Controller for an Eight-legged Robot
Authors: H. Khayoun Fatima , A. Aldair Ammar
Published: February 2025

At recent days, the robot performs many tasks on behalf of humans or in support of humans. Among the most prominent benefits of robots for humans are removing the risk factor from humans, completing routine tasks for humans, saving a lot of time and effort, and mastering work. This paper presents a model of an eight-legged robot equipped with an intelligent controller that was simulated using MATLAB. The designed structure contains 24 controllers, three for each leg, to provide flexibility in movement and rotation. Proportional Integral Derivative (PID) controller has been used in this work, each leg contains three PIDs. A particle swarm optimization algorithm (PSO) was used to adjust the parameters of the PID controller (Kp, Ki and Kd). The structure of eight legs robot with controller is implemented using Simscape Multibody in the MATLAB program, where the movement of the eight-legged robot is visualized and analyzed without the need for complex analysis associated with a mathematical model. The simulation results were conducted in a three-dimensional environment and were presented in two scenarios. The first was implementing and simulating the robot without using a controller, which leads to the robot falling at the starting point. The second was when a PID controllers are used with the system, where better movement was obtained. Finally, the robustness of the controller was verified by changing the load that the robot bears.
Improved Q-Switching pulse Performance in Multi-Wavelength Brillouin-Erbium Doped Fiber Laser
Authors: Abd Ali Hasanain Naser , Arsad Norhana , Naser Abdali Taj-Aldeen , Ghadhban Haitham Qutaiba , Zulkipli Nur Farhanah , Aiman Rosol Ahmad Haziq , Wadi Harun Sulaiman
Published: February 2025

Employing a highly nonlinear, 4.5-meter-long Erbium-doped fiber (EDF) as the hybrid gain medium, a self-Q-switched laser produced the Q-Switched pulses in multiwavelength. The laser's repetition rate could be adjusted between 15.46 and 57.31 kHz, and its center operating wavelength was approximately 1594 nm. A multi-wavelength Brillouin Erbium fibre laser (BEFL) operating in the L-band was successfully activated using stimulated Brillouin scattering (SBS). By varying the input pump power within the range of 64.8 mW to 259.4 mW, the pulse width can be controlled from 16.14 to 8.50 μs using less than 156.4 mW of pump power. The SBS-based Q-switched laser showed exceptional stability with a maximal pulse energy of 84.10 nJ, and the fundamental radio frequency signal-to-noise ratio (SNR) reached a high of 70.45 dB. Notably, no actual saturable absorber components were used in this experiment, making it the first successful implementation of a BEFL with multi-wavelength output that is Q-switched using SBS.
Bibliometric Computational Mapping Analysis of Publications of Marine and Fisheries Education using VOSviewer
Authors: Satibi Ahmad , Rudi Mad , Rouf Ahmad Beni , Yulda  , Cahyadi Ferry Dwi , Arifin Willdan Afrizal , Nurulpaik Iik , Supriatna Encep
Published: February 2025

This study investigates the research development in marine and fisheries engineering education employing a bibliometric approach with VOSviewer analysis. The article data was obtained from the Google Scholar database using the Publish or Perish Reference Manager application. The search method is guided by the title and abstract of the publication, which refer to the terms "Mechanical Marine and Fisheries in Education". A total of 800 relevant papers, indexed by Google Scholar, were discovered throughout a 10-year period from 2012 to 2022. The results show that marine and fishery engineering research in the field of education is categorized into eight clusters. The first cluster, focused on marine engineering education, has a total link strength of 748 terms. The second cluster, centred around management marine fishing, has a total link strength of 872 terms. The third cluster, related to mechanical damage, has a total link strength of 81 terms. The fourth cluster, concerning mechanical properties, has a total link strength of 275 terms. The fifth cluster, dedicated to marine ecosystems, has a total link strength of 711 terms. The sixth cluster, focused on fishing grounds, has a total link strength of 444 terms. The seventh cluster, centred around national marine fisheries, has a total link strength of 195 terms. Lastly, the eighth cluster, related to fishing resources, has a total link strength of 200 terms. The number of publications from 2012 to 2016 exhibited an upward trend, with the values being 46, 55, 58, 75, and 77, respectively. In 2017 the number of publications decreased to 66. From 2018 to 2021, it increased again (67, 87, 97, 100). By mid-2022, there were 59 publications. We conducted an extensive analysis of numerous published articles on marine and fisheries engineering in education, focusing specifically on issue areas, using VOSviewer. This research serves as a foundation for future investigations.
A Comprehensive Performance Comparison of Thresholding and the K-Means Clustering Algorithm in White Blood Cells Segmentation
Authors: Ismail Puteri Zalikha Simya , Junoh Ahmad Kadri , Wan Muhamad Wan Zuki Azman , Mashor Mohd Yusoff , Hassan Rosline , Zulkeflee Razan Hayati , Murnawan Hery
Published: February 2025

In the medical field, the segmentation of white blood cells is an important process in machine learning techniques. The conventional process requires an expert, a hematopathologist, to manually analyse blood smear samples from patients. The sample is pre-processed on a slide using a staining procedure that provides the components of platelets, red blood cells and white blood cells. White blood cell images obtained by a microscope are important in guiding haematology imaging to diagnose blood cancers such as leukemia and lymphoma. However, there are some challenges while conducting manual segmentation of white blood cells, which requires expert labour to observe each blood sample individually to diagnose the patients. This process is also very iterative, time-consuming, and relatively expensive. Besides that, this procedure has medical and scientific drawbacks, including inaccurate output due to interobserver disagreement and inadequate sensitivity, specificity, and predictive value. Thus, new methodologies were proposed throughout the years to aid the white blood cell segmentation process. The objective of this study is to review thresholding and K-means clustering methods, which are two widely used segmentation approaches, to segment the microscopic image of white blood cells. The effectiveness of these approaches was then evaluated. The proposed methodology was tested on five types of white blood cells: neutrophils, eosinophils, basophils, monocytes, and lymphocytes, to compare their performances. The result shows that the K-means clustering technique's performance is more accurate than the thresholding, where the dice similarity is 93.88% and 93.23%, respectively. Contrarily, the thresholding technique runs much quicker than the K-means clustering algorithm, requiring 0.3238 seconds as compared to 6.4292 seconds.
A Brief Comparison of Self-Weight Deflection and Optical Path Difference of Lens Mount for Space Applications
Authors: Maamar Fatouma , Mankour Abdeldjelil , Mertad Omar
Published: February 2025

Optomechanical lenses can experience varying levels of stress, which can have a notable impact on optical parametric systems. To ensure proper alignment, positioning, and location of lens components within design tolerances, it is crucial to have a robust support structure in place for optical systems. The primary load on lens assemblies typically comes from their own weight in different gravity orientations. This study employs an analytical approach to examine the effects of stress resulting from lens mounting on the wave front passing through the lens, which can alter the optical path. Additionally, when an elastomer-mounted lens bears weight, the elastomer can bend, causing the lens to move and the optical axis to become de-centred. Through the use of these analytical methods, designers can identify potential issues with optical elements and mounting conditions, allowing them to take steps to minimize stress. The study's findings underscore the substantial differences in optical path and self-weight deflection between analytical and ideal methods.
Science and Technology in Civic Education Learning: A Bibliometric Review of Recent Research
Authors: Matang Matang , Suryadi Karim , Darmawan Cecep , Anggraeni Leni , Tanshzil Sri Wahyuni
Published: February 2025

This study is a bibliometric review aimed at analysing recent research on science and technology in civic education learning. Research data was obtained using the reference management application Publish or Perish from journals indexed by Google Scholar. A total of 181 articles relevant to the keywords “Civic Education Learning” AND “Science and Technology” were collected from 2018 to 2023. The VOSviewer application was then used to visualize and analyse the bibliometric data. The results of the study can provide insights into the contribution of science and technology to civic education learning. With a better understanding of the contribution of science and technology to civic education learning, educators and researchers can develop more effective strategies to prepare the younger generation to face the complex challenges of the current global era. This research can also help identify research gaps that need further investigation and guide future research on science and technology in civic education learning.
Portraying Multicultural Education in Local History Learning: Science and Technology in History Education
Authors: Kuwoto M. Ari
Published: February 2025

Multicultural education is an educational concept that recognizes differences and diversity within a framework of cohesion and equality. The concept of multicultural education is important for a country with cultural diversity like Indonesia. Education is a powerful tool for developing multiculturalism. History education is one of the educational concepts whose goal is to build a democratic and nationalistic attitude as well as multicultural awareness. The historical unit that examines the heterogeneity of Indonesian society is the local history of Indonesia, which grew up with diversity in language, religion, ethnicity, race, customs, and culture. This diversity is inseparable from the narrative continuity process. Learning based on the values of diversity is important in the midst of Indonesian cultural pluralism and the impact of globalization. Growing multicultural values and meanings through learning history is the right and fundamental step to strengthen a sense of nationhood. The purpose of this article was to explore the role of local history education in building multicultural awareness and the concept of effective local history teaching to develop multicultural awareness. Local history studies can provide awareness to students about the history of community diversity. Multicultural awareness can be built by studying the past differences of each society. Local history can be delivered using five models, including learning from previous experiences, case studies of various differences, the development of learning strategies, curriculum developments, and the incorporation of local history learning into national history materials.
Bibliometric Analysis of Research on Project-Based Learning Model with STEM Approach in Mathematics Education
Authors: Sari Fitri Aida , Kusumah Yaya S. , Juandi Dadang
Published: February 2025

This study investigated the development of research on Project-Based Learning model with STEM approach in Mathematics Education through a bibliometric computational mapping analysis using VOSviewer. Publish or perish was used to get the article data from Google Scholar. The search process was guided by the article title and abstract, which referred to the keyword "Project-Based Learning Model with STEM approach in Mathematics Education". A total of 41 papers were considered relevant. The research period of the paper used was from the past 10 years (2014 to 2023) indexed by Google Scholar. The research results showed that the Project-Based Learning model with STEM approach in mathematics education research could be divided into three terms. The first term was teaching method in cluster 4 with 18 total links, 19 total link strengths, and 12 occurrences. The second term was STEM learning, included in cluster 6 with 15 full links, 15 total link strength, and 11 occurrences. The third term was STEM PjBL, included in cluster 8 with 13 total links, 15 total link strength, and 10 occurrences. The analysis results of the development of the Project-Based Learning model with STEM approach publications in mathematics education in the last ten years showed frequent fluctuations. From 2014 to 2016, publications increased at the same rate in 2016 and 2017 and decreased in 2018. It then increased again in 2019 to 2020 but decreased in 2021 and 2022. Until, in 2023, it rose again. The number of publications in 2023 could continue to grow because the data were taken in the middle of 2023. The result of the study shows that research opportunities for the Project-Based Learning model with the STEM approach, especially in mathematics education, still have high options and are related to other terms.
A Comparison on hand grip strength of non-dominant hand among Physiotherapists and other Healthcare Providers
Authors: Anwar Aqsa , Khalid Saman , Azhar Samia , Aymen Syeda
Published: February 2025

Objective: To compare hand grip strength of non-dominant hand among physiotherapists and other healthcare providers
Study design: It was a A cross-sectional comparative study design.
Place and duration of study: The study was conducted from June 2024 to September 2024.
Material and Methods: This study was conducted on hand grip strength of non-dominant hand among physiotherapists and other healthcare providers. Data was collected through non probability purposive sampling technique. We had 92 participants (46 physiotherapists and 46 healthcare providers i.e.; Nurses, dentists and general surgeon), both male and female aged 25 to 45 years old with the minimum experience of 2 years. Data was collected from public and private hospitals of Rawalpindi. Hand grip strength was assessed after obtaining consent forms from participants. After taking informed consent data was collected using hand held dynamometer.
Results: Data was analyzed using SPSS version 27. Statistical analysis revealed no significant difference (p˃0.05) in non-dominant hand grip strength between physiotherapists and other healthcare providers.
Conclusion: The study revealed no statistically significant difference in non-dominant hand grip strength between physiotherapists and other healthcare professionals. It indicates that variations of grip strength are more closely influenced by personal elements such as age, gender and activity level rather than professional occupation.
Das Neolithikum in Flintbek, Kr. Rendsburg-Eckernförde, Schleswig-Holstein [Band 2]
Authors: Mischka Doris
Published: February 2025

Im vorliegenden Band werden die neolithischen Befunde und Funde aus Flintbek vorgelegt. Systematische Ausgrabungen dieses neolithischen und bronzezeitlichen Gräberfeldes fanden von 1977–1996 durch das archäologische
Denkmalamt Schleswig-Holsteins statt. 35 neolithische Fundstellen, sieben Langbetten und 14 andere Grabhügel mit insgesamt 29 megalithischen Grabkammern und 32 nicht-megalithischen Gräbern wurden von Doris Mischka
bearbeitet. Aufgrund der 14C-Datenserie zum Bau der Gräber gelang es für die Trichterbecherkulturen, das gesamte Gräberfeld vergleichend zu untersuchen. Es zeigte sich, dass erst ab dem 38. Jh. v. Chr. in Flintbek
kontinuierlich Gräber angelegt wurden. Im Verlauf des Frühneolithikums bis ca. 3300 v. Chr. entstanden vor allem Langbetten und Rundhügel mit unterschiedlichen Dolmenkammern; im anschließenden Mittelneolithikum werden
Ganggräber typisch. Im Frühneolithikum wurden neben Dolmen auch nicht-megalithische Gräber vor allem in die Langbetten integriert. Ein Langbett konnte sowohl mit einer nicht-megalithischen als auch mit einer
megalithischen Grabkammer angelegt und dann sukzessive vergrößert werden. Während beispielsweise das Langbett LA 4 als Megalithgrab begann, wurde 100 Jahre später das benachbarte Langbett LA 3 mit mehreren nicht-megalithischen
Gräbern begründet und erst anschließend um vier Dolmenkammern erweitert. Flintbek LA 3 spielt darüber hinaus aufgrund der durch den Grabhügel konservierten Wagenspuren, die präzise um 3400 v. Chr. zu datieren sind, in der
Diskussion zur Erfindung von Rad und Wagen eine wichtige Rolle. Die unter mehreren Langbetten nachgewiesenen Pflugspuren gehören zu den ältesten Belegen für den Einsatz von Hakenpflügen in Europa
Das Neolithikum in Flintbek, Kr. Rendsburg-Eckernförde, Schleswig-Holstein [Band 3]
Authors: Mischka Doris
Published: February 2025

Im vorliegenden Band werden die neolithischen Befunde und Funde aus Flintbek vorgelegt. Systematische Ausgrabungen dieses neolithischen und bronzezeitlichen Gräberfeldes fanden von 1977–1996 durch das archäologische
Denkmalamt Schleswig-Holsteins statt. 35 neolithische Fundstellen, sieben Langbetten und 14 andere Grabhügel mit insgesamt 29 megalithischen Grabkammern und 32 nicht-megalithischen Gräbern wurden von Doris Mischka
bearbeitet. Aufgrund der 14C-Datenserie zum Bau der Gräber gelang es für die Trichterbecherkulturen, das gesamte Gräberfeld vergleichend zu untersuchen. Es zeigte sich, dass erst ab dem 38. Jh. v. Chr. in Flintbek
kontinuierlich Gräber angelegt wurden. Im Verlauf des Frühneolithikums bis ca. 3300 v. Chr. entstanden vor allem Langbetten und Rundhügel mit unterschiedlichen Dolmenkammern; im anschließenden Mittelneolithikum werden
Ganggräber typisch. Im Frühneolithikum wurden neben Dolmen auch nicht-megalithische Gräber vor allem in die Langbetten integriert. Ein Langbett konnte sowohl mit einer nicht-megalithischen als auch mit einer
megalithischen Grabkammer angelegt und dann sukzessive vergrößert werden. Während beispielsweise das Langbett LA 4 als Megalithgrab begann, wurde 100 Jahre später das benachbarte Langbett LA 3 mit mehreren nicht-megalithischen
Gräbern begründet und erst anschließend um vier Dolmenkammern erweitert. Flintbek LA 3 spielt darüber hinaus aufgrund der durch den Grabhügel konservierten Wagenspuren, die präzise um 3400 v. Chr. zu datieren sind, in der
Diskussion zur Erfindung von Rad und Wagen eine wichtige Rolle. Die unter mehreren Langbetten nachgewiesenen Pflugspuren gehören zu den ältesten Belegen für den Einsatz von Hakenpflügen in Europa
Herramientas de conservaci�n de la biodiversidad
Authors: Botero-Echeverri Jorge Eduardo , Arbel�ez-Alvarado Daniel , Lentijo-Jim�nez Gloria Mar�a , Castellanos Oscar , Franco-Rojas N�stor Gustavo
Published: February 2025

En esta publicaci�n se dan algunas recomendaciones para llevar a cabo la conservaci�n de la biodiversidad, como son: 1. Proteger la cobertura vegetal natural, como los fragmentos o parches de bosques y rastrojos; 2. Protecci�n de las ca�adas y cercas vivas, como los corredores; 3. Mantener los cafetales con sombr�os heterog�neos o con varias especies de �rboles y con diferentes estratos; 4. La producci�n de caf�s especiales sostenibles; 5. Establecer programas de educaci�n ambiental.
A szervezett bűnözői jelenségek a számítógépes hálózatokon
Authors: Nagy Zoltán András
Published: February 2025

The author provides a comprehensive overview of cyber crimes.
A helyszíni szemle hatékonyságának aktuális kérdései
Authors: Katona Géza
Published: February 2025

Focusing on organizational and technical conditions, the author examines legal and forensic factors influencing the effectiveness of crime scene survey.
Centigrade and Body Temperature Based Fan Speed and AC Load Controller
Authors: Keertheghaa S.  , Sulthana H. Ismath , Arthi A.  , Aruna Devi T.
Published: February 2025

This study introduces the system of temperature based controlled fan and load. This makes a smart system methodology and reduces our work, it is our main domain. It automatically controls the speed of the fan. This project introduces an ARDUINO UNO-based automatic room temperature fan speed and AC load controller. The purpose of this presentation is to provide an overview of a standalone automatic fan speed controller that regulates fan speed in accordance with our needs. The DS18B20 temperature sensor are intended to be detected by this system, which then transforms the data into an electrical analogue signal that can be applied to the microcontroller. On the 16*2-line LCD, the temperatures sensed and set values are shown. The system is user-friendly because to the Liquid Crystal Display (LCD). The temperature sensor also measures our body temperature, based on that it will control the fan speed and AC load which we connected. On the LCD panel, it also shows our body temperature. The power supply for this project is regulated from adapter with the voltage of 12V, 2A. It can be used for many different purposes, including as air conditioners, water heaters, incubators, snow-melters, heat exchangers, furnaces, and thermal pots. It is also highly compact.
Waiting to Know What You Might Mean: Asylum, Literature and the Ethics of Listening
Authors: Gilmour Rachael
Published: February 2025

This article approaches the UK asylum system as a system of linguistic bordering, in relation to literary and activist reimaginings of language exemplified by the Refugee Tales project.1 It examines Home Office practices of language and translation, and the weaponisation
of English as a ‘detention language’, as elements of a border regime that reaches its apotheosis, as Refugee Tales makes clear, in indefinite immigration detention, in which people are removed from access to communication altogether. In response, I argue, this activist project
seeks to reckon with the language practices of the state that are enacted in the name of British citizens, while looking for ways to re-establish ‘the possibility of trust / in language’.2 Refugee Tales seeks to remake English as a welcoming medium, imagining
it in ways that are divested from borders and bordering. It does this partly in order to reclaim it as a tool of intervention in the institutional structures the project critiques. At the same time, as we see in the case of the recent Walking Inquiry into Immigration Detention,3
Refugee Tales also takes the imperatives, possibilities and contingencies of communication across linguistic difference as a model for a different kind of practice in policymaking.
Une révolution littéraire
Authors: Pinel Élodie
Published: February 2025

L’affaire Weinstein et la libération progressive de la parole ont chamboulé la littérature et produit un regard neuf sur les récits d’agressions dans des ouvrages classiques. Dire l’abus permet de réinventer le récit.
Un GIEC pour tous
Authors: de Montpellier Simon-Pierre , Ouassak Fatima
Published: February 2025

La politologue Fatima Ouassak invite l’écologie politique à se renouveler à partir des quartiers populaires, de l’histoire décoloniale et des religions. Entretien.
A Framework for Supporting Intrapreneurialism in Nursing Academia
Authors: Morrison-Beedy Dianne , Yashin-Shaw Irena , Ackerman Michael
Published: February 2025

Background

To prepare nurses for increasingly complex and challenging roles, nursing education must include a focus on developing an intrapreneurial mind-set that students take with them to future employment and leadership positions.

Method

Intrapreneurs take on responsibility for innovating within their organization. The combination of skills and energies encompassing leadership, cognitive flexibility, and a future orientation can facilitate the success of nurses in health care organizations, academic institutions, and diverse employment settings. Case studies provide examples regarding how to best integrate the concepts of intrapreneurship into nursing education.

Results

Nurse educators play a vital role in developing, encouraging, and building an intrapreneurial mentality. Faculty who lead by example serving as intrapreneurial role models can help students and colleagues prepare to innovate within today's rapidly changing health care system.

Conclusion

This article discusses the importance of intrapreneurial skills for nurses and posits a framework for supporting intrapreneurialism in nursing academia.

[
J Nurs Educ
. 2025;64(2):69–73.]
Normalized solution for a kind of coupled Kirchhoff systems
Authors: Zhang Shiyong , Zhang Qiongfen
Published: February 2025

In this paper, we investigate the existence of a normalized solution for the following Kirchhoff system in the entire space $ \mathbb{R}^N $ ($ N\geq3 $):

   \begin{document}$ \begin{align*} \begin{cases}-\left(1+\int_{ \mathbb{R}^N}|\nabla u|^2dx\right)\Delta u = \lambda_1u+\mu_1|u|^{p-2}u+\beta r_1|u|^{r_1-2}u|v|^{r_2}, \\ -\left(1+\int_{ \mathbb{R}^N}|\nabla v|^2dx\right)\Delta v = \lambda_2v+\mu_2|v|^{q-2}v+\beta r_2|u|^{r_1}|v|^{r_2-2}v, \end{cases}\;\;\;\;\;\;\;\;\;\;\;\;({\rm{P}}) \end{align*} $\end{document}

under the constraints $ \int_{ \mathbb{R}^N }|u|^2dx = m_1 \ \mbox{and} \ \int_{ \mathbb{R}^N }|v|^2dx = m_2 $, where $ m_1, m_2 > 0 $ are prescribed. The parameters $ \mu_1, \mu_2, \beta > 0 $, $ 2\leq p, q < 2+\frac{8}{N} $, $ r_1, r_2 > 1, $ and satisfy $ {r_1}+{r_2} = 2^* = \frac{2N}{N-2} $. The frequencies $ \lambda_1, \lambda_2 $ appear as Lagrange multipliers. With the help of the Pohožaev manifold and the minimization of the energy functional over a combination of the mass constraints and the closed balls, we obtain a positive ground state solution to (P). We mainly extend the results of Yang (Normalized ground state solutions for Kirchhoff-type systems) concerning the above problem from a single critical to a coupled critical nonlinearity.
Experts on the defensive: The Tsiganologue versus Romani activism (1959-1973)
Authors: Barrera López Begoña
Published: February 2025

This article discusses the figure of the Tsiganalogue, the expert on the “Tsigane question,” in post-World War II France. Specifically, it analyses the role played by one of these experts in the police persecution of Roma ethnic activism during the 1960s and early 1970s. Drawing on this case study, its objective is two-fold: firstly, to show the central role that Tsiganalogues played in the hounding of the Romani movement; secondly, to explain how the self-perceptions of these experts (of their authority and role) were decisive factor in their interventions with the public authorities. The article draws on a wide range of sources from the French Ministry of the Interior and the Ministry of Health and Population. It is structured in five parts: the first briefly defines and explains the concepts of expert, expert knowledge and ethnicity; the second describes the context and profile of the main agents studied (the Tsiganalogues, Romani activists and the French police); the third and fourth parts examine in extenso the primary documentation; and finally, the fifth part offers a reflective summary of the profile of the Tsiganalogue.
Synthesis of rGO/ZnO Nanorods Composite and its Application as a Photoanode in DSSC Solar Cells
Authors: Badif Nurwidi Muhammad , Wahyuningsih Sayekti , Ramelan Ari Handono
Published: February 2025

Composite rGO/ZnO NRs (NRs = nanorods) have been a photoanode material in DSSC solar cells. In this study, ZnO NRs were synthesized using a hydrothermal method with the addition of hexamethyl tetraamine (HMTA). The synthesized ZnO NRs was then composited with graphene oxide (GO) synthesized by the modified hummers method. The performance of rGO/ZnO NR composite material with various compositions of ZnO: GO ratio (w/w) as a photoanode has been investigated. The results show that graphene oxide is capable of decreasing the ZnO band gap energy. The composite of rGO/ZnO NRs shows its performance as a photoanode material in DSSCs. The composite with ZnO:GO (w/w) ratio of 1:2 showed better performance than the other rGO/ZnO NRs composite.
Prevalence, severity and duration of post-vaccination symptoms following COVID-19 vaccination in a working-aged population in Galle district, Sri Lanka
Authors: Thilakarathna P. T. A. , Prabodhi H. L. K. , Bandara W. V. R. T. D. G.
Published: February 2025

Vaccination programs were conducted to prevent spreading of fatal coronavirus disease 2019 (COVID-19), the fifth documented pandemic affecting the entire world. A reluctance for vaccines had been developed due to various reasons including fear for post vaccination symptoms (PVSs). The present study investigated the prevalence, severity, and duration of PVSs after COVID-19 vaccination in the working-age population in Galle district, Sri Lanka. A cross-sectional study was conducted with 418 participants using a self-administered questionnaire after obtaining informed written consent. About 69.6% of the study participants were females and aged 30-39 years. The Sinopharm/BBIBP-CorV was the predominant (91.4%) administered vaccine. Only 8.1% and 24.9% refused the subsequent second and third doses, respectively. After receiving any dose of vaccine, 57.9% of participants had experienced at least one PVS, with the highest prevalence (59.1%) occurring after the third dose of vaccination. Fever, headache, pain at the injection site, and muscle / joint pain with highest prevalence as 83.3%, 66.7%, 66.7% and 50.0% respectively, were the common PVSs encountered in the study sample. Most of the PVSs were lasted for 24 hrs or less and categorized under mild or moderate conditions. Differences in PVS prevalence were observed among different types of vaccines and doses. Women aged 30-39 years, unmarried individuals, participants with low incomes, and healthcare workers reported higher odds ratios of PVSs. Participants with prior COVID-19 infection were 1.5 times more likely to experience PVSs. This study highlights the necessity of addressing PVSs to improve vaccination acceptance and public knowledge. This study supports for international efforts of comprehending issues related to vaccines and improve vaccination campaigns.
Assessing the Challenges and Opportunities of Street Food Experiences in Sri Lanka: Insights from Tourism Stakeholders
Authors: Bandara W. M. A. H. , Ranasinghe J. P. R. C. , Dassanayake D. M. C. , Wasantha H. N. L.
Published: February 2025

In the contemporary world, Street food is emerging as one of the most vital areas for the tourism industry. Thus, the street food industry can create a great impact on a tourist destination. However, this industry encounters challenges and opportunities in sustaining the quality of street food experiences for tourists. Hence, this research aimed to explore the Challenges and Opportunities for Street Food Experiences in Sri Lanka. Thus, utilizing the purposive sampling method, 27 structured interviews were conducted, and data was analyzed via content analysis. Hygiene issues, food quality Issues, regulatory issues, collaboration issues, Inadequate infrastructure facilities, and lack of food choices were identified as the challenges. Increasing popularity, availability of ingredients, unique food culture, availability of events, and social media support were identified as opportunities for street food experiences. Conducting regular training and inspections and enhancing collaborations among stakeholders contribute to enhancing street food experiences. Moreover, Future researchers should conduct more studies in developing nations on economic impacts, cultural exchanges, and tourist behaviors related to street foods.
Predatory ability of Sycanus annulicornis Dohrn. (Hemiptera: Reduviidae) on nettle caterpillar prey (Setora nitens Walker.) (Lepidoptera: Noctuidae) in the laboratory
Authors: Rustam Rusli , Nasution Dwi Yuwanda , Yunandra Yunandra , Ibrahim Mukhlis
Published: February 2025

The nettle caterpillar (Setora nitens) is a major pest affecting oil palm plants and is predominantly found in oil palm plantations in Riau. The predator Sycanus annulicornis Dohrn is a potential natural enemy for controlling S. nitens. This study aims to evaluate the predatory ability of S. annulicornis imago when preying on S. nitens. The research was conducted at the Plant Pest Laboratory, Faculty of Agriculture, Riau University, from March to July 2023. The experiment was designed using a completely randomized design method consisting of three treatments with seven replications. The treatments involved S. annulicornis imago [N1=one male imago, N2=one female imago, and N3=one pair of imago (male and female)], with observation parameters including first and second prey search time, prey handling time, predation ability, and total predation. Results showed that the handling time for one S. nitens by S. annulicornis ranged from 3.86 to 5.14 hours. The treatment involving one pair of S. annulicornis imago was the most effective, as it resulted in the fastest prey search times (0.79 minutes for the first prey and 0.71 minutes for the second prey), as well as the fastest prey handling time (3.86 hours), with a total predation rate of 100% for S. nitens.
First report of non-marine ostracods (Crustacea, Ostracoda) from the Dahlak Archipelago (Eritrea), with the description of two new species
Authors: Rossetti Giampaolo , Mazzini Ilaria , Chiozzi Giorgio , Vecchioni Luca , Marrone Federico
Published: February 2025

The information on Recent non-marine ostracod faunas of the north-eastern part of the Afrotropical region is still limited. Here we report the first record of ostracods from the Dahlak Archipelago, a group of small islands located in the southern part of the Red Sea off the Eritrean coast. Specimens were obtained by hatching in the laboratory of diapausing eggs occurring in dried mud collected in temporary freshwater ponds, following the so-called “Sars’ method”. A total of five species were found, including two species new to science, of which four belong to the family Cyprididae (Cypris galefensis, Plesiocypridopsis newtoni, Heterocypris sp., and Chrissia martensi n.sp.) and one to the family Ilyocyprididae (Ilyocypris dahlakensis n.sp.). A detailed description of the morphology of valves and soft parts is given, and COX1 sequences were obtained for four species. Cypris galefensis was so far only known for its type locality in Somalia with a population containing both males and females, whereas our samples consisted exclusively of females. Plesiocypridopsis newtoni, a species characterised by a wide geographic distribution and previously known to occur also in the Afrotropical region, shows marked variability in the prehensile palps of males, as evidenced by comparing the specimens from this study with descriptions available in the literature. The genus Heterocypris (with 15 species) and the genera of the two new species described here, Chrissia (with 17 species) and Ilyocypris (with four species), have been previously reported from this biogeographic region as well. The specimens analysed of Chrissia martensi n.sp. were all females, none of which had sperm inside the carapace, indicating the possibility of parthenogenetic reproduction in this species. A peculiar sexual dimorphism in the valve morphology characterises Ilyocypris dahlakensis n.sp., with females having a straight posterior margin, forming a right angle at the ventral anterior edge. Rehydration of dry sediments collected from arid areas where wet periods are short and often unpredictable has proven to be a successful method for describing aquatic invertebrate biodiversity.
Peripheralia: Pulling yourself together
Authors: Ellis Chris
Published: February 2025

No abstract available.
The Consumer Protection Act: Implications for medical practice
Authors: Prins-Van den Berg E.
Published: February 2025

The Consumer Protection Act (CPA) 68 of 2008, and the Regulations in terms thereof, became effective on 31 March 2011, and 1 April 2011, respectively. Potentially, the CPA has far-reaching implications for medical practice. Under the CPA, patients could be regarded as consumers, and medical practitioners as suppliers or service providers, depending on the context. Medical practitioners could also be regarded as consumers. However, when they practise in partnerships or incorporated companies, i.e. as juristic persons, and their turnover equals or exceeds R2 million, the CPA would not apply. This article briefly reviews some of the provisions of the CPA that could impact on medical practice.
Common ethical issues related to HIV/AIDS
Authors: Knapp van Bogaert D. , Ogunbanjo G.A.
Published: February 2025

No abstract available.
Cold comfort for healthcare workers? Medico-ethical dilemmas facing a healthcare worker after occupational exposure to HIV
Authors: Madiba T.E. , Jack C.L. , Vawda Y.A.
Published: February 2025

Following exposure to the human immunodeficiency virus (HIV) it is advisable for the healthcare worker (HCW) to take postexposure prophylaxis. A prerequisite for this is the establishment of the HIV status of the HCW and the patient. Ordinarily, this would be preceded by the ascertainment of the HIV status of the HCW and the patient. This should be done as soon as possible after exposure, usually within 24 hours. If the exposure takes place when the patient is under anaesthetic, which is often the case, consent for HIV testing is not readily forthcoming and this poses an ethical dilemma. A similar dilemma is posed by a patient who, having awoken, is not in a position or is unwilling to give consent. This paper discusses the ethical and legal constraints on the HCW and the employer in circumstances where the patient is not in a position to give consent. The paper concludes by restating the need to respect confidentiality and the autonomy of the patient and that informed consent is paramount in testing for HIV status. The paper proffers the view that testing the patient will not substantially alter the course of action open to the HCW and, in any event, will do little to allay the fears of HCWs.