bluuebunny/crossref_metadata_2025 huggingface dataset:
Analisis Persepsi Siswa Terhadap Nilai Keindonesiaan Melalui Upacara Bendera SD Muhammadiyah 2 Limboto Kabupaten Gorontalo
Authors: Selby Bolilio  , Yane Hardiyanti Mahmud  , Fandi H. Binggo  , Thamrin A. Kum
Published: June 2024

This research aims to analyze students' perceptions of Indonesian values through flag ceremonies at SD Muhammadiyah 2 Limboto, Gorontalo Regency. The study employs a qualitative descriptive method with data collection procedures through observation, interviews, and documentation. In this research, inductive data analysis is conducted through data collection, analysis, presentation, and drawing conclusions. The research data sources involve primary data sources, consisting of the school principal, teachers, and students. The results of the research indicate that educators' efforts in implementing Indonesian values in students at SD Muhammadiyah 2 Limboto, Gorontalo Regency, have been well executed. This is evident in aspects such as discipline, nationalism, leadership, and camaraderie established among the students. The objectives of the flag ceremony are also achieved, where students demonstrate love for their homeland, nation, and religion. They also show a sense of responsibility and personal discipline, maintaining order in their daily lives. Additionally, students exhibit a spirit of mutual cooperation, the ability to lead and be led, and the capability to conduct ceremonies with reverence and orderliness. The implications and contributions of this research encompass various aspects that can affect multiple stakeholders. It can provide valuable input for educators and education professionals at SD Muhammadiyah 2 Limboto and other schools, allowing them to adopt proven practices to enhance students' Indonesian values. This study could serve as a foundation for curriculum development focused on shaping Indonesian values and improving the leadership role in instilling these values within the school environment. Furthermore, this research contributes to the education literature, particularly in the context of character formation among students.
Aproximación conceptual sociojurídica del fenómeno social habitantes de la calle enmarcado en los derechos fundamentales
Authors: Escobar Melguizo Miguel Rafael , Alarcón Orlando Ramón
Published: June 2024

El objetivo del presente estudio fue develar la interpretación sociojurídica del fenómeno social ‘habitantes de la calle’ en el marco de los derechos fundamentales. A partir de una perspectiva metodológica fundamentada bajo el paradigma interpretativo, con enfoque cualitativo, y direccionada como investigación sociojurídica documental, se tomó como unidades de estudio, la Ley 1641 de 2013, Acuerdo 074 de 2017, Decreto 1285 de 2022 relativo a la Política Pública Social para Habitantes de la Calle - PPSHC 2022 – 2031 en su Anexo Técnico 4, Acuerdo 029 de 2008 y el Censo DANE 2021; todos como documentos que dan cuenta de la normativa jurídica de tal fenómeno social en Colombia, en la Ciudad de Montería, Córdoba. Los resultados permitieron la generación de una aproximación conceptual mediante la definición jurídica del fenómeno, así como la continuación sistémica de esta, vinculante a los derechos fundamentales de la población de estudio en su realidad social. Se concluye así, que la evolución en el término, ha sido desde el discurso de la sociedad y de las normas jurídicas; sin embargo, en cuanto a la atención y a las oportunidades verdaderamente implementadas en la realidad social de esta población vulnerable, no se evidencia evolución y cambio efectivo.
Perfil criminal: Un recurso forense para la investigación de homicidios en series en la Provincia de Chiriquí
Authors: Sánchez Miguel
Published: June 2024

El perfilamiento Criminal es una técnica que busca describir, explicar y predecir las características demográficas (edad, sexo, ocupación) y psicológicas (rasgos de personalidad, motivación) de la persona que ha cometido un delito y de quien se desconoce su identidad. Con tal fin recoge información de la escena del crimen, de la víctima, de los testigos y de los documentos relacionados con el caso. En resumen, el perfil es una técnica que, a partir de los datos disponibles sobre el delito, el lugar de los hechos y la víctima, arrojan informaciones sobre las características del responsable.
Impacto que provoca los avances tecnológicos en el personal de registros médicos, Chiriquí 2017-2023
Authors: García Tiare , Cubilla Kaira , Miranda Ladys , Castillo Medina Jorge
Published: June 2024

Con el avance constante de la tecnología en el ámbito de la salud, es importante entender cómo estos avances han influido en las labores diarias y en la eficiencia del personal de Registros Médicos. Se realizaron encuestas a profesionales de la salud, especialistas en tecnología médica y personal de registros médicos en diferentes centros de salud de Chiriquí. Además, se recopiló información de fuentes secundarias, como informes gubernamentales y publicaciones científicas relacionadas con la temática. En primer lugar, se destaca que la implementación de sistemas electrónicos en Registros Médicos ha permitido una mayor eficiencia en el almacenamiento, acceso y recuperación de información. Esto ha agilizado los procesos de atención médica, mejorando la calidad de los servicios y reduciendo el tiempo de espera de pacientes. Sin embargo, este avance tecnológico ha supuesto un desafío para el personal encargado de los registros médicos. Han surgido nuevas tareas y responsabilidades, como el manejo de sistemas informáticos especializados y la actualización constante de conocimientos en tecnología de la información. Además, se han requerido habilidades de análisis y gestión de grandes volúmenes de datos, así como una mayor atención a la privacidad y seguridad de la información médica. En cuanto al impacto en el personal, se ha observado una disminución en la carga de trabajo relacionada con tareas manuales y repetitivas, lo que ha liberado tiempo para actividades más especializadas y de mayor valor añadido. No obstante, algunos miembros del personal han experimentado dificultades para adaptarse a los cambios tecnológicos y han requerido capacitación adicional.
Satisfacción de los consumidores en el uso de la banca electrónica: Adopción a las herramientas tecnológicas
Authors: Bonilla Krislyn , Ismare Rosa , Membache Enri , Ortega Jeancarlo , Rodríguez Anacelis , Acevedo Eliana
Published: June 2024

La satisfacción de los consumidores en el uso de la banca electrónica ha experimentado un gran crecimiento significativo ofreciendo al cliente la conveniencia de realizar transacciones bancarias desde la comodidad de su dispositivo electrónico. El presente estudio tiene como objetivo analizar la satisfacción de los consumidores en el uso de la banca electrónica. Para ello, la investigación se establece con un enfoque fenomenológico cualitativo, con diseño en investigación acción-participativa. Esta investigación permitió conocer la satisfacción del consumidor en la banca electrónica por medio de la recolección de datos de fuente primaria contando con una población de 52 estudiantes universitarios de la UMECIT en diferentes carreras, a través de en una encuesta como técnica de recolección de datos. Como resultados, se determinó que la banca electrónica para mantener y mejorar la satisfacción del cliente, las instituciones financieras deben mantener altos estándares de seguridad, brindar una experiencia en línea fluida y ofrecer un soporte eficiente. En última instancia, la satisfacción del consumidor en la banca electrónica no sólo depende de la funcionalidad de las plataformas, sino también de la confianza que se establece entre los usuarios y las instituciones financieras en la era digital, a medida que la tecnología continúa transformando la manera en que se realizan transacciones bancarias, se torna un positivismo en la percepción de los usuarios.
Inteligencia artificial y la creación de contenidos
Authors: Gordón Cristal , Gimenez Enmanuel , Torres Stefania , Marin Gisleane , Yanguez Ariagna
Published: June 2024

La inteligencia artificial es un tema que ha ido evolucionando e influenciando a nivel mundial, donde se tiene la hipótesis sobre los futuros robots u otros equipos que reemplazaran muchas profesiones en un determinado tiempo. Tiene como principal objetivo identificar el papel de la inteligencia artificial y la creación de contenidos en la sociedad y cómo influye en ella. Interpretar el impacto que hará la inteligencia artificial y la creación de sus contenidos en nuestra sociedad en un futuro determinado En términos generales, la Inteligencia Artificial es una fuerza transformadora que está moldeando el futuro de manera profunda. Se concluye entendiendo que la inteligencia artificial es una herramienta de gran utilidad en la actualidad, a través de ella se puede hacer grandes cambios, especialmente en el mundo laboral, ya que es en esta área que está tomando la mayor fuerza. Tiene aplicaciones para mejor la productividad, la seguridad e incrementar la velocidad de los flujos de trabajo. La creación de contenidos implica todo lo que es creación de programas, sitio webs, incluyendo la robótica, es por eso que se debe de fortalecer e incentivar a las investigaciones sobre la inteligencia artificial, que será de gran ayuda para nuestra sociedad. También es muy importante el tipo de utilidad que se dé para no dañar el bienestar ni la integridad de las personas que integran nuestra sociedad.
Terminal Dönem Yönetimini Anlamak
Authors: Başol Yağmur , Gürkan Nurdan , Azaklı Ahmet Emre , Yön Belma
Published: June 2024

Ölümle Yaşam Arasındaki Her Şey
Gülten KAPTAN
Terminal Dönem
Gülten KAPTAN
Yağmur BAŞOL
Terminal Dönemde Semptom Yönetimi
Nurdan GÜRKAN
Terminal Dönem ve Ölüm Halinde Fizyolojik Değişimler
Ahmet Emre AZAKLI
İyi Ölüm
Tuğba MENEKLİ
Saygın Ölüm
Tuğba MENEKLI
Sağlıkta İnsan Merkezli Yaklaşım: Terminal Dönem Bakımına Yönelik Tercihlere Etki Eden Faktörler ve Süreç İyileştirme Önerileri
Belma YÖN
Phenotellurazine redox catalysts: elements of design for radical cross-dehydrogenative coupling reactions
Authors: Paffen Alina , Cremer Christopher , Patureau Frederic W
Published: June 2024

Redox active phenotellurazine catalysts have been recently utilized in two different cross-dehydrogenative coupling reactions. In this study, we revisit the design of the phenotellurazine redox catalysts. In particular, we investigate the level of cooperativity between the Te- and N-centers, the effect of secondary versus tertiary N-centers, the effect of heterocyclic versus non-heterocyclic structures, and the effect of substitution patterns on the redox catalytic activity.
Türkiye'nin Yayıncılık Tarihi'nde Orhan Ayhan
Authors: Ayhan Orhan
Published: June 2024

TRT’nin 1964 yılında başlayan yayıncılık serüveninin 60. yılını geçtiğimiz günlerde kutladık. Türkiye’nin hafızası olarak nitelendirilebilecek TRT, gerek coğrafyamızda gerekse de dünyanın çeşitli noktalarında izler bırakmaya devam ediyor. Geçmişe nostaljik bir yolculuk yapmak adına TRT’nin hafıza isimlerinden duayen spor spikeri Orhan Ayhan ile bir röportaj gerçekleştirdik.
Aprendizaje Cooperativo en la Educación Superior: Un Enfoque desde las Habilidades e Interacciones Sociales
Authors: Bastidas Sánchez Carlos Jamil
Published: June 2024

El aprendizaje cooperativo en la educación superior es se suma importancia, la constitución de grupos heterogéneos permiten la interrelación de los profesionales en formación, con personas de diferentes procedencias, etnias, creencias, razas etc. Esto le permitirá el poder ir desarrollando habilidades sociales que le serán de mucha utilidad cuando ejerza su profesión, además de convertirse en agentes activos en su proceso de aprendizaje. El aprendizaje colaborativo permite que el docente trasmita el conocimiento y el estudiante procesa esta información integrándola a su diario vivir, el rol de docente es de facilitador del aprendizaje usando técnicas y estrategias que promuevan y apoyen acciones productivas para que el estudiante sea un ente dinámico promoviendo directamente procesos de tipo cognitivo, afectivos y motivacionales.
Factores de Neuromarketing para la Construcción de Marca en la Categoría de Chocolates del Canal DTT, En el Cantón de Santo Domingo de Heredia, en el Segundo Semestre del 2023
Authors: Solano Avila Kevin , Chacón Achí Seir
Published: June 2024

Se sugiere que el resumen sea elaborado en un solo párrafo, con texto en tamaño 11, Calibri Light, justificado, al igual que todo el cuerpo del artículo, salvo los subtítulos que van alineados a la izquierda. El resumen debe presentar el objetivo del trabajo, las estrategias metodológicas implementadas para su consecución y los principales resultados o hallazgos. La extensión máxima ideal para el resumen es de 200 palabras. Se adopta como sistema de citación el del Manual de Estilo de publicaciones de la American Psychological Association (APA), en su sexta o séptima edición (www.apastyle.org). Se recomienda que la extensión total del artículo, incluida las referencias, no supere las 20 páginas. El siguiente trabajo de investigación, hace hincapié en analizar los diferentes factores del neuromarketing para la construcción de marca del chocolate, cuya empresa Jogaimex S.A atiende el canal dtt que incluye supermercados independientes de la zona de Santo Domingo de Heredia. La investigación tiene como foco también catalogar el uso del actual neuromarketing en la empresa hacia el comercio del chocolate, seleccionar los factores y herramientas del neuromarketing disponibles en el mercado para la construcción de marca, y poder identificar las mejoras en la aplicación del neuromarketing en Jogaimex S.A, como fuente primaria de investigación se tuvo el apoyo de 3 especialistas en neuromarketing, tanto a nivel internacional como acá en Costa Rica quienes brindaron información valiosa al estudio, también se involucró al personal de Jogaimex S.A quienes Gerentes y vendedores, al conocer bien la categoría de chocolates aportaron información muy importante al estudio. Jogaimex S.A ha  construido con el tiempo un negocio que les ha permitido abrirse en el mercado nacional; y a pesar de todos estos esfuerzos de ventas, se ve la oportunidad de involucrar al plan de mercadeo y ventas el neuromarketing, el cual va a dar un excelente aporte hacia el equipo comercial, ya que más que lograr la venta y reventa, se requiere también darle mayor mercadeo al producto, en donde se involucran variables de éxito y Kpi’s como el % del lineal y su presencia de marca en la góndola u exhibiciones adicionales, uso de las redes sociales, como también persuadir en las mentes de las personas por medio de la emociones y sus sentidos, y comprender mejor su comportamiento de compra, ya que productos como el chocolate, los sentidos de la vista, olfato y gusto, influyen mucho y con el apoyo de la publicidad y material P.O.P disponible al momento de elegir que marca de chocolate compra en el supermercado.
Realidad Virtual y Aumentada en Psicología: Explorando la Percepción de Estudiantes Universitarios
Authors: Chinchilla-Fonseca Paula , Torres Acuña Mariana , Artavia Alpízar Marta María
Published: June 2024

La rápida evolución de las Tecnologías de la Información y Comunicación (TIC) ha transformado los procesos de enseñanza y aprendizaje, dando lugar al surgimiento de la realidad virtual (RV) y aumentada (RA) como herramientas educativas. El objetivo esta investigación es determinar la percepción de los estudiantes de Psicología respecto a la metodología de RV y RA en su proceso de enseñanza y aprendizaje. Este estudio busca explorar cómo estas tecnologías emergentes son recibidas y valoradas por los estudiantes, y cómo influyen en su experiencia educativa en la disciplina psicológica. Metodológicamente, se realizaron grupos focales con 47 estudiantes. A nivel de resultados se reconoce la capacidad de la RV y RA en mejorar los sentidos y su utilidad en el aprendizaje inmersivo, así como en terapias, pero se evidencia un desconocimiento que señala la necesidad de capacitación. Se vislumbra el potencial de la fusión entre juego y aprendizaje. Se destaca el rol de algunos efectos secundarios y desafíos de accesibilidad y capacitación. En torno a metaverso (MV), hay concepciones vagas, resaltando la necesidad de concientización sobre su potencial educativo y los desafíos económicos y físicos asociados. Se recomienda una preparación previa para docentes y estudiantes, así como la consideración de la diversidad de usuarios para garantizar una educación inclusiva y competitiva en el mercado laboral. Además, se destaca la importancia de una implementación ética que proteja los derechos y el bienestar de los usuarios.
About the retromolar pad - its particularities and role in the stability and retention of the classic complete denture
Authors:   Department of Speciality Disciplines, Faculty of Dental Medicine, “Titu Maiorescu” University, Romania, Banateanu Andreea Mariana , Biculescu Alexandra-Elena ,   Department of Speciality Disciplines, Faculty of Dental Medicine, “Titu Maiorescu” University, Romania, Babat Misu Marian ,   Department of Speciality Disciplines, Faculty of Dental Medicine, “Titu Maiorescu” University, Romania, Di Francesco Paolo ,   Department of Speciality Disciplines, Faculty of Dental Medicine, “Titu Maiorescu” University, Romania, Ciorniciuc Ioana Ana Maria ,   Department of Speciality Disciplines, Faculty of Dental Medicine, “Titu Maiorescu” University, Romania, Dardouk Mona ,   Department of Speciality Disciplines, Faculty of Dental Medicine, “Titu Maiorescu” University, Romania, Mihali Teodora ,   Department of Speciality Disciplines, Faculty of Dental Medicine, “Titu Maiorescu” University, Romania, Popescu Anca Iuliana ,   Department of Speciality Disciplines, Faculty of Dental Medicine, “Titu Maiorescu” University, Romania
Published: June 2024

Aim. This paper aims to bring back into focus the area of the retromolar pad as an important element for the support area and for achieving an effective marginal seal in case of completely edentulous mandible. Material and methods. 24 cases of complete mandibular edentation were analyzed and the characteristics of the retromolar pad were followed. Analyzing the appearance of the retromolar pad, an attempt was made to classify them into the classes proposed by J. Lejoyeux. The clinical implications of various aspects of this area were monitored. Results. In patients with the retromolar pad in the last three classes, difficulties were encountered in adapting the individual tray and during the functional impression; in cases with advanced resorption of the alveolar ridge and unfavorable retromolar pad, a poor marginal seal was obtained. Conclusions. From the analyzed cases, it was reconfirmed that in an old complete mandibular edentation, the retromolar pad can take an oblique or vertical position. Such a situation becomes unfavorable for the retention of the complete denture, for the marginal seal. Knowing the particularities of the completely edentulous prosthetic field and the clinical stages is essential for maintaining denture stability.
Thermal Comfort Assessment of UPM Engineering Library in Tropical Climate Conditions
Authors: Arash Fattahi  , Hussein Kadhim Sharaf  , Nor Mariah
Published: June 2024

Thermal comfort is the study of indoor comfort level feel by the occupant in a room. This paper presents the study of thermal comfort that had been carried out in the library of engineering faculty at Universiti Putra Malayia in Serdang, Malaysia. The study was made in 4 days from 9 am to 11 am on October and November. This study was carried out to assess their thermal conditions during the occupants’ study hours. Thermal comfort variables were measured during study hours too. Qualitative and Quantitative data analysis showed that engineering library meet the requirement of comfort zone thermal conditions of ASHRAE standard 55 and ISO 7730. The result shows the environmental condition of the library is neutral to slightly warm in 4-point ASHRAE scale. The linear regression between Predicted Mean Vote and Operative Temperature reveals that the maximum acceptable temperature in this field of study is 26.5ºC.
Physical, Thermal and Mechanical Properties of Carbon Fibre/Polyphenylene Sulfide (CF/PPS) Composite at Different Tool Temperatures Fabricated by Hot Press
Authors: Emy Aqillah Sharif  , Nadlene Razali  , Hasanudin Hamdan  , Nurhidayah Ismail  , Nor Hajar Shamsullizam  , Muhammad Dhiyauddin Esa  , Noor Zuhaira Abd Aziz  , Mohd Khairul Anwar Mohamad  , Syazwan Ahmad Rashidi
Published: June 2024

Carbon fibre/polyphenylene sulfide (CF/PPS) composites have gained the attention in the aerospace industry due to its excellent impact strength, fire/smoke/toxicity (FST) performance, and chemical resistance. This study investigated the effect of hot press tool temperatures (Tt) on the physical, thermal, and mechanical on CF/PPS composites. The experimental procedure involved using PCL of CF/PPS composite and subjecting it to hot press forming at different tool temperatures ranging from 150°C to 195°C. The physical properties was characterized by surface energy measurement using the sessile drop method. Thermal properties were evaluated through the degree of crystallinity (DoC) determination using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) where the percentage of the residual weight is calculated. The mechanical properties was assessed using tensile test. From the results, increasing the Ttwill enhances the surface energy, improving the adhesion and bonding between the matrix and CF, and the thermal stability of the composite materials. At Tt 180°C, the physical, thermal, and mechanical properties of CF/PPS composite component is at their best with the value of surface energy is 35.13%, the DoC is 25.00%, TGA is 74.74% and tensile strength is 793.80 MPa. This study provides valuable insights into the relationship between tool temperature and the physical, thermal, and mechanical properties of CF/PPS composites, offering guidance for manufacturing processes and composite material design in aerospace and other industries.
Comparative Analysis of Measurement Points for Structural Damage Identification in Free-Free Aluminium Beam using Response Surface Methodology and FRF Curvature
Authors: Nur Raihana Sukri  , Nurulakmar Abu Husain  , Syarifah Zyurina Nordin  , Aminudin Abu
Published: June 2024

This research paper presents a comprehensive comparative analysis of measurement points for structural damage identification in free-free aluminium beams using Response Surface Methodology (RSM) and Frequency Response Function (FRF) curvature. The primary objective is to determine the optimal measurement points for establishing a relationship between the input parameters and response features, thus forming a surrogate model. The investigation focuses on analyzing the influence of the number of measurement points on RSM's capability to identify structural damage. Three distinct Design of Experiment (DOE) techniques are explored: central composite design (CCD), Box-Behnken design (BBD), and D-optimal design, each incorporating different numbers of measurement points (10 elements, 15 elements, and 20 elements). The study's results highlight BBD's strong capability in detecting damage with fewer measurement points, while CCD design accurately identifies damage in finer measurement points. The findings reveal a clear trend: as the number of measurement points increases, the model becomes more refined, yielding higher stiffness reduction factor (SRF) values. The results underscore the significance of selecting an appropriate number of measurement points to enhance RSM's efficiency in identifying structural damage, thereby optimizing damage identification processes. This study contributes valuable insights into the selection of measurement points for effective structural damage identification, offering practical implications for engineering applications.
Morphological, TGA, and FTIR on Rigid Polyurethane Composite Laminated with Untreated and Treated Bamboo Fiber Roof Insulation
Authors: Adyla Illyana Roseli  , Nik Normunira Mat Hassan  , Abdul Mutalib Leman  , Najibah Abdul Latif  , Yulfian Aminanda  , Djoko Setyanto  , Yuyun Tajunnisa  , Yonrapach Areerob  , Methawee Nukunudompanich  , Muhammad Farid Azmi
Published: June 2024

The performance of roof insulation such as polyurethane decreased due to problems such as insufficient absorption and poor thermal insulation performance, especially during rainstorms. The aims of this study are to investigate the physical property and its potential reinforced material such as rigid polyurethane doped with treated and untreated bamboo fiber composite (RPU-BF) at different ratios of 0, 25, 30, 35, and 40% of bamboo fibers as an insulation material for roof applications. The bamboo fibers were treated by using silane coupling agent treatment. The rigid polyurethane composite samples were prepared and then laminated bamboo fiber to overcome the sound problem in roofs. The physical characterization was investigated by Water Contact Angle (WCA), the morphological by Scanning Electron Microscopy (SEM), Thermo-gravimetric Analysis (TGA), and Fourier Transform Infrared Spectroscopy (FTIR) Analysis. The results showed that the treated bamboo fiber had a 192.5° water contact angle as a super hydrophobic property due to the presence of the chemical bonds Si-O-Si and Si-O-C in the silane coupling agent treatment. The morphology showed that 30% ratios of RPU-BF-T30 give the smallest pore diameter size. The peak of thermal degradation temperature of untreated and treated bamboo fiber was increased from 320°C to 350 °C with a weight loss of 80% to 50%. The treated bamboo fiber exhibited peaks at 3010–3040 cm-1 were associated with stronger Si-O-Si bonding, indicating the formation of new chemical bonds between bamboo fiber and silane coupling agent due to the ester bond from the cellulose, lignin, and hemicellulose. Thus, there was a similar trend peak in the functional chemical group in the FTIR spectrum of the RPU-BF composite. This result shows that RPU-BF composite had the potential of the optimum ratio of bamboo fiber as an insulation material for local communities and beneficial to the bamboo industry.
Preparation and Characterization of Poly(Methyl Methacrylate) Grafted Natural Rubber Latex Films
Authors: Nurul Hayati Yusof  , Nurulhuda Abdullah  , Fatimah Rubaizah Mohd Rasdi
Published: June 2024

Poly(methyl methacrylate) (PMMA) grafted natural rubber (NR) latex was successfully prepared and solely exploited even at high MMA concentration (1.5 mol/kg-rubber) to make coherent and uniform vulcanized films without blending with other polymer to achieve excellent physical properties. High ammonia natural rubber (HANR) latex was subjected to graft-copolymerization with methyl methacrylate (MMA) monomer in the presence of tert-butyl hydroperoxide (TBHP) and tetraethylenepentamine (TEPA). High conversion, i.e., 85.12 mol%, and grafting efficiency, i.e., 92.70 mol%, were obtained at 1.5 mol/kg-rubber MMA. The resulting gross PMMA grafted NR (1.5PMMA) latex was then compounded, dipped, and vulcanized to produce thin films. The tensile strength and modulus at 300 percent (M300) of vulcanized 1.5PMMA film were superior to vulcanized HANR film by 1-fold. While elongation at break (EB) was identical to each other due to the high gel content in both vulcanized films. Besides, the vulcanized 1.5PMMA film absorbed less oil compared to HANR film. The thermal stability of vulcanized 1.5PMMA film was found to be higher than that of vulcanized HANR film. Hence, it can be deduced that controlling the graft-copolymerization of PMMA in NR latex is the key to produce coherent thin films with improved properties at higher PMMA content.
Performance Characteristics of Nano Palm Shell Ash (NPSA) in Asphalt Mixture
Authors: Fitra Ramdhani  , Bambang Sugeng Subagio  , Harmein Rahman  , Russ Bona Frazila
Published: June 2024

One innovation in creating new materials that have superior properties compared to large-sized materials is to use nanotechnology. The uniqueness of nano materials is that the smaller the size of the material, the greater the surface area and performance characteristics of the material in the asphalt mixture. This research develops nano technology in asphalt pavement construction by making nano material from palm shell ash waste. The aim of this research is to determine the effect of adding palm shell ash nano material as a substitute for asphalt in the AC-WC mixture. The research method was carried out by testing the morphological characterization of the palm shell ash nano material using X-Ray Fluorescence (XRF) testing and Scanning Electron Microscope (SEM) testing, then continuing with testing the characteristics of the mixture using the Marshall testing method. The nano material used is palm shell ash material obtained from palm shell burning waste originating from Riau which is then processed into Nano Palm Shell Ash (NPSA) material using a ball mill. The asphalt used is Pen 60/70 asphalt produced by Pertamina. The use of NPSA material in asphalt modification with NPSA variations of 1%, 2% and 3% can improve the performance of marshal characteristics compared to conventional asphalt mixtures. It can be seen that the stability, flow, VFA and MQ values increase with increasing NPSA percentage in asphalt. Meanwhile, the VIM and VMA values decreased along with the increase in the NPSA percentage in asphalt. In addition, increasing the percentage of NPSA in asphalt can reduce the use of optimum asphalt content compared to conventional asphalt mixtures. Utilizing palm shell ash waste is the best alternative for improving the performance of asphalt in mixtures and is environmentally friendly and economical.
The Influence of Different Mass Ratios on Vortex-Induced Vibration Energy Extraction of Four Cylinder Arrays
Authors: Fatin Alias  , Mohd Hairil Mohd  , Mohd Asamudin A. Rahman
Published: June 2024

Currently, there is a growing demand for renewable energy harnessed from fluid dynamics within the oil and gas industry. The surge in demand has propelled electricity to become a vital and irreplaceable form of universal energy worldwide. Vortex-Induced Vibrations (VIV) energy harvesting shows great potential as a technology for capturing energy from flowing bodies of water. The purpose of this research is to investigate the numerical aspect of VIV in rigid circular cylinders with the intention of capturing renewable energy from the sea. The investigation employs a Vortex-Induced Vibration Aquatic Clean Energy (VIVACE) converter to analyze the vibration characteristics of densely packed cylinders featuring varying mass ratios (m*) at both minimum and maximum values. Another purpose of the study is to investigate the effect that m* has on the performance of a VIV converter that is comprised of four cylinders positioned in a staggered pattern. For the purpose of analyzing power conversion in the VIV energy converter model across a wide range of mass ratios (from 2.36 to 12.96), simulations are carried out with a Reynolds number of 82000. The findings indicate that the highest converted power reaches a peak of 7.48 W with a mass ratio of 2.36, whereas a greater mass ratio of 12.96 results in only 4.33. The study highlights the substantial influence of mass ratios on the extraction of power output from VIV. The results essentially offer crucial information about the optimum mass ratio in closed four cylinder arrays to design VIV energy harvesting to produce clean and renewable energy sources.
Factors Associated with Sickle Cell Crisis Among Sickle Cell Disease Patients Aged ≤15 Years in Three Kenyan Health Facilities
Authors: Kimile Davis , Karanja Simon , Magu Dennis , Moriasi Gervason
Published: June 2024

In view of the dearth of definitive therapeutic measures for sickle cell disease (SCD) and its associated crises, the resulting financial burden on parents and caregivers, coupled with psychological distress, social stigma, and other far-reaching consequences, remains incalculable. This research assessed the determinants of sickle cell crises among individuals with SCD aged 15 years and below, focusing on three healthcare facilities in Nairobi County. Using a descriptive cross-sectional design, the study aimed to establish the correlation between SCD crises and various variables in this specific age group within the selected health facilities. Structured interviewer-administered questionnaires, featuring both open-ended and dichotomous questions, were meticulously validated, optimized, and employed to gather pertinent data from the participants. The findings revealed that a majority of SCD patients below 15 years in sampled hospitals were female (52.85%), and the highest incidence of SCD occurred in the age range of 0-5 years (46.63%). Educational attainment among patients predominantly peaked at the primary school level (65.80%), with a minimal 7.77% reaching a secondary school level. Moreover, female caregivers (92.23%) were prevalent among those responsible for SCD patients aged 15 years and below. Primary caregivers, aged between 26- 30 years (37.82%) and 31-35 years (26.42%) were predominately married (75.13%) and engaged in agricultural activities (63.73%). This study revealed that out of the sampled SCD patients under 15 years old, a staggering 83.94% experienced crises related to their sickle cell disease, manifesting as abdominal pains for nearly 70 %, joint discomfort for over 72.22%, acute chest pain occurring approximately 25 %, with bone ache accounting about 32 %. Multiple logistic regression analysis demonstrated that female gender, the age group of 6-10 years, and frequent hospital visits (more than twice a month) significantly increased the log odds for severe SCD crises. Therefore, this study underscores the impact of patient and caregiver factors on the severity of SCD and its crises. Modifying these factors appropriately holds the potential to enhance the prognosis and wellbeing of both patients and caregivers, and strategic interventions must be devised to improve adherence to treatment protocols for SCD patients aged 15 years and below, thereby enhancing prognosis and overall quality of life.
The Role of Translanguaging in Teaching Mathematics at Adult Correctional Centre Classrooms in South Africa
Authors: Mbatha Siphelele
Published: June 2024

This paper sought to explore the use of the translanguaging strategy as the means for decolonising and advancing the teaching of mathematics procedural fluency. From the pragmatic epistemological stance, the study collected both qualitative and quantitative data from the group of fifty purposively sampled adult offenders. The intervention study inferred data from pre-tests, post-tests, and semi-structured interviews. The data, which was analysed using SPSS and the thematic analysis approach, through the conceptual framework of teaching adult offenders mathematics procedural fluency through the isiZulu-English translanguaging strategy, indicate that the use of the translanguaging strategy yields satisfactory performance in adult offenders’ mathematics procedural fluency. The study further discovered that the translanguaging strategy leads to the decolonization of the mathematics curriculum and the development of isiZulu and English languages in correctional centre classrooms. The researcher recommends the use of the translanguaging strategy and fluidity in the use of any repertoires in the teaching of mathematics procedural fluency, conceptual understanding, and factual knowledge within the context of correctional centre classrooms. The researcher further concludes that translanguaging is applicable, and resourceful in all mathematics educational contexts, and it leads to the decolonization of the mathematics curriculum for both children and adults, in all contexts. The paper contributed to the scholarship by exploring the mathematics learning, teaching and assessment processes and the role of translanguaging thereof in correctional centre classrooms.

Keywords: Translanguaging, Correctional Centre, Mathematics Classroom, Mathematics Procedural Fluency, Adult Offenders, Educationists
Fundamentación teórica: Sistema de relaciones: tu guía paso a paso
Authors:   Universidad del Zulia / Global Humanistic University, Díaz-Barrios Jazmín
Published: June 2024

En este apartado se presenta la síntesis del problema planteado a la luz del estado del arte. Los elementos fueron presentados desde el sustento teórico y luego matizados con ejemplos que faciliten la comprensión; por otra parte, desde una visión de amplitud metodológica, se orienta al investigador que se enfrenta a investigaciones que ameritan enfoque cuantitativo, cualitativo o mixto. De igual manera se muestran las distintas nomenclaturas que suelen usarse en uno u otro enfoque. En primer lugar, se presenta la variable (s) a investigar, se define conceptualmente de acuerdo con la literatura revisada y luego, de acuerdo con el rol que jugará en la investigación. Posteriormente, y siempre basados en los objetivos de la investigación y las bases teóricas, legales e históricas referenciadas, se orienta al lector, a través de ejemplos específicos, en la construcción del mapa que servirá de guía para alcanzar los objetivos específicos y finalmente, el objetivo general de la investigación.
Marco metodológico de la investigación
Authors:   High Rate Consulting, Artigas Wileidys , Valencia-Arias Alejandro ,   Corporación Universitaria Americana
Published: June 2024

El objetivo del presente capitulo es guiar a quienes elaboren trabajos de investigación por el recorrido metodológico que necesitan transitar para tomar las decisiones correspondientes al proceso a llevar a cabo para recolectar su data y terminar su trabajo de investigación. La metodología usada fue la revisión documental de textos relacionados, así como, el análisis a través de la experiencia de los investigadores en su transitar por el mundo académico no solo como investigadores, sino también como tutores de diversos trabajos de investigación conducentes o no a grado. Se concluye que el camino metodológico requiere contar con las herramientas adecuadas para que el trabajo pueda culminarse con éxito, conocer estos conceptos es fundamental para el avance de la carrera de investigación, no solo para participantes de postgrado, sino también para los profesores que los acompañan.
De la tesis al artículo científico: principios, criterios y estrategias para su elaboración
Authors:   Universidad Nacional Autónoma de México, Paz Enrique Luis Ernesto , Hernández Alfonso Eduardo Alejandro ,   Universidad Nacional Autónoma de México
Published: June 2024

El presente apartado se enfoca en identificar los procesos fundamentales requeridos para transformar una tesis en un artículo científico. Utilizando el método de análisis documental clásico, se analizan los principios, criterios y estrategias para llevar a cabo esta transición de manera efectiva. El trabajo también destaca la importancia de la revisión bibliográfica y la contextualización de la investigación dentro del campo científico correspondiente. Una sólida fundamentación teórica y una revisión exhaustiva de la literatura existente refuerzan la credibilidad y el aporte original. Se resaltó la importancia de la estructura y el enfoque en la redacción de un artículo científico. Se sugirió una reorganización y reducción de la información presente en la tesis para adaptarla a los requisitos específicos de un artículo. La claridad y concisión se convierten en aspectos cruciales para lograr una comunicación efectiva. Fueron analizados los criterios de selección de datos y resultados relevantes para el artículo. La adecuada elección de los hallazgos más significativos y su presentación de manera ordenada son aspectos determinantes para asegurar la validez y relevancia del artículo científico resultante. Se hacen recomendaciones para garantizar la coherencia y cohesión del artículo. Se sugiere evitar redundancias y ambigüedades, así como utilizar un lenguaje preciso y técnico apropiado para el campo científico. Se concluye que el artículo resalta la importancia de la revisión y edición minuciosas. Se proporciona una guía para el proceso de transformar una tesis en artículos científicos. Los principios, criterios y estrategias presentados ayudarán a los investigadores a mejorar la comunicación y difusión de sus resultados de investigación en la comunidad científica.
Assessment of Callisto Gravity-field Determination Using the Inter-satellite Range-rate Link
Authors: Sun Shangbiao , Yan Jianguo , Gao Wutong , Wang Bo , Dirkx Dominic , Wang Zhen , Yang Yongzhang , Barriot Jean-Pierre
Published: June 2024

China will launch the “Tianwen-IV” mission around 2030, focusing on the orbiting exploration of Jupiter and Callisto, a moon of Jupiter. As part of this ambitious mission, a main satellite will carry another satellite that will be released in the Jupiter system to continue its journey toward Uranus. Considering the current mission planning, we propose an inter-satellite radio-observation mode that differs from the conventional observation mode of tracking from Earth to precisely determine the orbit of the satellites. Given the significance of the Callisto gravity field model in both science objectives and satellite navigation, we have conducted a series of simulation experiments to evaluate the potential of this inter-satellite range-rate data for accurately estimating the Callisto gravity field. The results obtained from the analysis demonstrate that by utilizing 40 days of ground station observations, it is possible to estimate the gravity field model of Callisto up to a degree of 70. Remarkably, when combining these ground station observations with inter-satellite observations, a comparable level of accuracy can be achieved with just 10 days of observations. Furthermore, with reduced inter-satellite observation noise, accuracy improves, enabling estimation up to 80 degrees or higher. Initial inter-satellite distance selection impacts estimation accuracy. These findings serve as a valuable test bed for the future “Tianwen-IV” mission to perform precise orbit determination and gravity field model estimation to reduce reliance on deep space stations.
The Cosmic Ultraviolet Baryon Survey (CUBS). VII. On the Warm-hot Circumgalactic Medium Probed by O vi and Ne viii at 0.4 ≲ z ≲ 0.7
Authors: Qu Zhijie , Chen Hsiao-Wen , Johnson Sean D. , Rudie Gwen C. , Zahedy Fakhri S. , DePalma David , Schaye Joop , Boettcher Erin T. , Cantalupo Sebastiano , Chen Mandy C. , Faucher-Giguère Claude-André , Li Jennifer I-Hsiu , Mulchaey John S. , Petitjean Patrick , Rafelski Marc
Published: June 2024

This paper presents a newly established sample of 103 unique galaxies or galaxy groups at 0.4 ≲ z ≲ 0.7 from the Cosmic Ultraviolet Baryon Survey (CUBS) for studying the warm-hot circumgalactic medium (CGM) probed by both O vi and Ne viii absorption. The galaxies and associated neighbors are identified at <1 physical Mpc from the sightlines toward 15 CUBS QSOs at z
QSO ≳ 0.8. A total of 30 galaxies or galaxy groups exhibit associated O vi
λ
λ 1031, 1037 doublet absorption within a line-of-sight velocity interval of ±250 km s−1, while the rest show no trace of O vi to a detection limit of

log

N

OVI

/

cm

−
2

≈
13.7

. Meanwhile, only five galaxies or galaxy groups exhibit the Ne viii
λ
λ 770, 780 doublet absorption, down to a limiting column density of

log

N

NeVIII

/

cm

−
2

≈
14.0

. These O vi- and Ne viii-bearing halos reside in different galaxy environments with stellar masses ranging from

log

M

star

/

M

⊙

≈
8

to ≈11.5. The warm-hot CGM around galaxies of different stellar masses and star formation rates exhibits different spatial profiles and kinematics. In particular, star-forming galaxies with

log

M

star

/

M

⊙

≈
9
–
11

show a significant concentration of metal-enriched warm-hot CGM within the virial radius, while massive quiescent galaxies exhibit flatter radial profiles of both column densities and covering fractions. In addition, the velocity dispersion of O vi absorption is broad with σ

υ
> 40 km s−1 for galaxies of

log

M

star

/

M

⊙

>
9

within the virial radius, suggesting a more dynamic warm-hot halo around these galaxies. Finally, the warm-hot CGM probed by O vi and Ne viii is suggested to be the dominant phase in sub-L* galaxies with

log

M

star

/

M

⊙

≈
9
–
10

based on their high ionization fractions in the CGM.
Twenty-five-year mapping species of the superfamily Cercopoidea (Hemiptera, Auchenorrhyncha) in Bulgaria
Authors: Angelova Radost , Gjonov Ilia
Published: June 2024

In Bulgaria, the superfamily Cercopoidea consists of 18 species in two families - Aphrophoridae and Cercopidae. Of these, 13 species of Aphrophoridae belong to the genera Philaenus, Neophilaenus, Aphrophora and Lepyronia and five species of Cercopidae are in Cercopis and Haematoloma. Over a period of 25 years of extensive research on the species of the superfamily in the country, a large amount of geo-referenced data has been collected on 17 of the species, which has significantly increased knowledge of their biogeography.

The paper presents a dataset of the materials of the superfamily Cercopoidea deposited in the Zoological Collection of the University of Sofia (BFUS). The specimens were collected from 888 localities in Bulgaria over a period of 25 years (1997 to 2022). The Cercopoidea collection comprises 8722 specimens grouped into 6670 collection objects.

The text provides data for each species, including a distribution map, regional literature taxon names and identifiers from eight taxonomic infrastructures (GBIF, BOLD, OpenBiodiv, BHL, COL, Plazi, EOL and TaxonWorks). It also includes data from literature and new records, phenology and altitudinal distribution in Bulgaria, as well as known host plants. Live photographs are provided for all species. A nanopublication presents the establishment of a new host plant, Asphodeline lutea (L.) Rchb., for the species Philaenus signatus Melichar, 1896.
Spatial analysis of transportation infrastructure distribution in Adamawa State, Nigeria: A location quotient perspective
Authors: Anjorin Olufemi
Published: June 2024

Transportation constitutes one of the pivotal systems crucial to the advancement of so-cioeconomic conditions. However, numerous communities, particularly in Nigeria, face a multitude of transportation challenges. The primary objective of this study is to examine the spatial arrangement of transportation facilities in Adamawa State, Nigeria, with the intention of identifying spatial-related challenges confronting the transportation sector and the socioeconomic development of the state. During the period spanning 2018 to 2019, an investigation into the spatial distribution pattern of transport facilities within the state was conducted. To gather data pertaining to the geographical concentration and developmental trajectory of the transportation system in the state, the ArcGIS 10.5 Length Calculation Module, Google Earth Pro, and questionnaire administration were employed. Data were subjected to inferential statistical analysis, results were tabulated, and maps were generated. The findings unveiled three distinct modes of transit, namely road, water, and air, with roads emerging as the most prominent option. Furthermore, the state exhibited a higher prevalence of paved (engineered but untarred) roads compared to tarred roads. Moreover, an analysis of the spatial pattern encompassing the state’s population and road network revealed that the length and density of tarred roads were greater in less populated Local Government Areas as opposed to the more populated ones. Ultimately, the road network pattern has yielded negative consequences for the state’s development. In light of these findings, the study puts forth recommendations that emphasize the urgent need to tar the numerous paved roads within the state in order to enhance connectivity with markets and other urban-centric facilities.