bluuebunny/crossref_metadata_2025 huggingface dataset:
Harmony of Progress: Investigating Discipline, Motivation, and Learning Achievement in Citizen Education
Authors: Maman Maman , Ocktaviani Nurul , Chisebe Sylvester , Al-Ghzewat Mohammed
Published: June 2024

Research objectives: This research aims to determine: 1) the relationship between student discipline and learning achievement in Civics subjects, 2) the relationship between learning motivation and learning achievement in Civics subjects and 3) the relationship between student discipline and learning motivation and learning achievement in Civics subjects
Methodology: This research is ex-post facto research and correlation research using a quantitative approach. The population in this study were students in grades VII and VIII of MTs Al Mu'minien, MTs Lohbener, MTs Ma'arif Langut and MTs Al Ghifari, totaling 1,294 students. The sampling technique used multi stage sampling with Isaac and Michael tables, and the sample obtained was 224 students. The data collection method uses a questionnaire for student discipline variables as well as learning motivation and documentation variables .
Main Findings: The main finding of this research is the positive and significant relationship between student discipline and learning motivation together on civic education learning achievement. This can have the implication that with student discipline and learning motivation in students together, students' Civics learning achievement will also increase . So that it can give rise to an urge for interest in learning to achieve a goal, for example becoming class champion .
Novelty / Originality of this research: The novelty of this research is the importance of the relationship between discipline and learning motivation together on student learning achievement in Citizen Education. It is considered important to combine the relationship between discipline and student learning motivation because this can be one way for students to have high levels concern for learning so that students can get good grades.
Student Perceptions of the Prospects of the Geography Education Study Program
Authors: Rajak Rizal , Ismail Hadijah
Published: June 2024

Purpose of the study: The aim of this research is to describe students' perceptions of the prospects of the Geophysical Education Study Program.
Methodology: The method used in this research is descriptive qualitative. To obtain the desired data and in accordance with the interests of research explanation, the author used data collection techniques through questionnaire instruments and the techniques used in analyzing the data were in the form of percentages.
Main Findings: Based on the results of the analysis in this research, the following were found: (1) the indicators of student views of the Geography Education Study Program are in the high category, (2) indicators of student responses regarding the Prospects of the Geography Education Study Program are in the medium category, (3) indicators The Geography Education Study Program students feel that they are in the high category in terms of study program development, which is good at providing education and learning, producing quality graduates, as well as developing the professionalism of internal human resources in order to produce superior and reliable figures.
Novelty/Originality of this study: This research can be useful for the Geography Education Study Program, namely as information in the development of the Geography Education Study Program and as literature for further research, especially those related to the development of the Geography Education Study Program.
Peran KPPU Dalam Penyelesaian Perkara Jual Rugi (Predator Pricing) Semen Di Indonesia
Authors: Hartini Rahayu , Ageng Supadi Rani Tri
Published: June 2024

Predatory pricing atau jual rugi merupakan tindakan penjualan barang atau layanan dengan harga yang sangat rendah dengan tujuan menghilangkan atau menciptakan praktik persaingan usaha yang monopolistik atau tidak sehat. Praktik penetapan harga predator merupakan ancaman serius bagi persaingan usaha yang sehat karena ditakutkan mengganggu stabilitas pasar, membatasi pilihan konsumen, serta mencegah pelaku usaha yang baru masuk ke dalam pasar. Oleh sebab itu, penegakan hukum yang efektif dan pemantauan ketat terhadap praktik ini sangat penting. Saat menangani kasus di PT. Dijelaskan Conch South Kalimantan Cement, Otoritas Pengawasan Persaingan Usaha (KPPU) menerapkan pendekatan akal sehat terhadap dugaan predatory pricing. Pendekatan ini didasarkan pada teori bukti yang kuat yang menggunakan analisis ekonomi untuk menentukan apakah tindakan pelaku ekonomi menimbulkan perilaku persaingan usaha monopoli atau tidak sehat. Dalam keputusan yang ditetapkan, KPPU menjalankan analisis dua variabel penting yakni pangsa pasar dan konsentrasi pasar yang ditelaah secara ekonomi. Hasil analisis diserahkan kepada PT. Conch South Kalimantan Cement, meskipun merupakan pemain yang relatif baru di industri semen wilayah Kalimantan, namun mencatatkan pangsa pasar yang meningkat signifikan di wilayah tersebut. Hal ini dianggap anomali karena peningkatan pangsa pasar menyebabkan banyak pesaing keluar dari pasar dan menghalangi operator baru memasuki pasar.
Pemberantasan Dan Pencegahan Oligopoli dan Persekongkolan Oleh KPPU (Studi Kasus PT.Telekomumikasi Indonesia)
Authors: Hartini Rahayu , Azzahra Fatimah
Published: June 2024

The Indonesian Telecommunications Industry Development The Republic of Indonesian government launched the program has a noble goal of ensuring that telecommunications infrastructure reaches all parts of Indonesia. To achieve this goal, several telecommunications companies joined the Parapa Ring consortium and organized the Parapa Ring project which aims to expand telecommunications networks throughout Indonesia. In handling bid manipulation cases, the Komisi Pengawasan Persaingan Usaha Perusahaan (KPPU) applies two main principles, namely the principle of per se illegality and the principle of reasonableness. However, the application of these principles is often challenged and flawed, as evidenced by Decision No. 36/KPPU-L/2010 on alleged discriminatory practices and collusion in the tender for the procurement of the Palapa Ring Mataram-Kupang cable system project. The doctrine of unlawfulness states that a particular agreement or business activity is unlawful if there is no further evidence of its effects. On the other hand, the rule of reason requires further evidence to determine whether an action inhibits or promotes competition. In a tender conspiracy, KPPU applies the rule of reason because it needs to be proven in more depth the effect of the act on business competition. Decision Number 36/KPPU-L/2010 highlights the misapplication of the principle of reason.
أثر إدارة الجودة الشاملة في تحسين أداء المؤسسات - دراسة مسحية على موظفي وأساتذة كلية اقتصاد صرمان بجامعة صبراتة
Authors: أبوبكر المدنيني هنية
Published: June 2024

تواجه مؤسسات الأعمال كثيرًا من المعوقات التي تعصف بها في هاوية الاندثار في حال عدم التغلب عليها, مما يتطلب جهداً أكبر في مواجهة المعوقات والتغلب عليها, أو تجعلها تدور في إطار الأداء التقليدي أو الفشل في التغلب على المنافسة, الأمر الذي يستوجب من الإدارة التنفيذية خلق أساليب عمل وطرق تحقيق معايرة, فكانت الجودة الشاملة أحد مداخل تحسين الأداء الذي اتبعته كثير من المؤسسات للتغلب على مشاكل العمل ومن بين هذه المشاكل المحافظة على الإستقرارية في تحسين الأداء مما يتطلب نفساً طويلاً وجهداً متلاحقاً في الاحتفاظ على مستوى الريادة والتميز الضروري لاستمرارية حياة التحسين المستمر, فكان على هذه المؤسسات العامة أن تأخذ مسار الجودة الشاملة.
تناول هذا البحث مقومات إدارة الجودة الشاملة من خلال معرفة مفهوم وتعريف الجودة الشاملة وتطور فكرتها ومداخلها ومراحل وأسس التخطيط للجودة, والعوامل التي تحد من تطبيق إدارة الجودة الشاملة وتكاليفها والرقابة عليها وتحسين وقياس الأداء.
مدى وعي مرضى السكري بأهمية النشاط الرياضي كعلاج ووقاية بمدينة المرج
Authors: محمد عبد الدائم أيمن
Published: June 2024

الرياضة والصحة وجهان لعملة واحدة بالنسبة للجميع ولمرضى السكري بصفة خاصة فبالإضافة إلى الفوائد المعروفة لممارسة الرياضة مثل بناء وتقوية العضلات وحماية القلب والأوعية الدموية والرفع من مستوى تحمل القلب والرئتين وتخفيض مستوى الكولسترول في الدم والحفاظ على الوزن السليم وتحسن ممارسة الرياضة أيضاً من عمل الأنسولين لدى مرضى السكري وتحد من الحاجة إلى تناول الأدوية وكذلك تخفض ممارسة الرياضة من التوتر والضغوطات والقلق وتمنع حصول المضاعفات. وهذا ما لفت انتباه الدارس من حيث انتشار هذا المرض في المجتمع وكثرة مضاعفاته وعدم الاستفادة من الرياضة في الحد من انتشاره وتقدم مضاعفاته وعدم وجود الوعي الكافي عند مرضى السكري بأهمية ودور النشاط الرياضي. حيث كانت أهداف الدراسة معرفة مدى وعي مرضى السكري لفوائد ومخاطر وطرق الوقاية من النشاط الرياضي وما هي العوامل المؤثرة في الوعي حيث استخدم استمارة استبيان مصممة ومحكمة من قبل خبراء واستخدام عينة وصل عددها (200) فرد باستخدام المنهج الوصفي وخلصت الدراسة إلى النتائج المبينة داخل مضمون الدراسة.
The behaviour and properties of some acid-base indicators: a review
Authors: S. Hemdan Sokaina , M. Al Jebaly Asma , K. Ali & Fatma
Published: June 2024

This review focuses on Seven Acid-Base Indicators from the azo class and from the second type: Methyl Orange; Methyl Red; Methyl Yellow; Alizarin Yellow R; Alizarin Yellow GG; Tropaeolin O and Magneson I. These indicators show different colors involving the chemical reaction in aqueous solutions as results as change the acidity of solution causing the formation two different structure forms one in acid form and another in basic forms with possibility formation of resonance structures. Different variables such as temperature; ionic strength; solvents; concentrations; pressure; substituent’s; position of function group and surfactant  that influence on the behavior of Acid-Base indicators were explained. The electronic absorption spectral, equilibrium, terminological aspects and characteristics as well as the possible schemes of formation two compounds at isosbestic point are discussed. The contributions of different methods using to estimate the dissociation constant for it is discussed.
أَنتِيجُونُوس جٌونَاتَاس ودوره في تأسيس الأسرة الأنتيجونية الحاكمة في مقدونيا
Authors: ابريك مومن د. عطية
Published: June 2024

يهتم موضوع “أَنتِيجُونُوس جٌونَاتَاس ودوره في تأسيس الأسرة الأنتيجونية الحاكمة في مقدونيا “بدراسة فترة مهمة من تاريخ مملكة مقدونيا، بعد تقسيم إمبراطورية الإسكندر المقدوني إلى ممالك هيلنستية منفصلة، يحكم كلًّا منها واحد من القادة الذين شاركوه حملاته العسكرية، وتركز الدراسة على الدور الذي أداه أَنتِيجُونُوس الثاني جٌونَاتَاس، والذي أدى إلى تغيير مجرى بعض الأحداث، خاصة فيما يخص مملكة مقدونيا وبعض أجزاء من بلاد اليونان. والوصول إلى أهم النتائج والأسباب التي أدت إلى ترسيخ حكم أَنتِيجُونُوس جٌونَاتَاس في مقدونيا رغم الصراعات المتكررة مع الملوك الهيلنستين. وماهي الوسائل التي استطاع بها  جٌونَاتَاس تخطي كل الصعاب التي واجهته في سبيل توطيد سلطته العسكرية واحكام السيطرة على أهم المناطق الحيوية في بلاد اليونان. ويتناول البحث عدة نقاط هي: نشأة أَنتِيجُونُوس جٌونَاتَاس وبداية صعوده، جٌونَاتَاس وتأسيس الأسرة الأنتيجونية في مقدونيا، الصراع مع بِيرّهوس ملك إيبروس على حكم مقدونيا، حرب خريمونيديس 267-261 ق.م، جٌونَاتَاس والسيادة البحرية في بحر إيجة، الصراع مع أرَاتُوس والحلف الآخي.
تقييم مستوى الاستثمار في رأس المال البشري بالأندية الرياضية الليبية
Authors: بدر حمد أ. م. د. أحمد , سليمان عبدالرحيم أ. م. د. ونيس , مصطفى علي أ. م. د. مراد , عبدالله علي د . أحمد
Published: June 2024

يهدف البحث الحالي إلى التعرف على مستوى الاستثمار في رأس المال البشري بالأندية الرياضية الليبية، وكذلك ترتيب مستوى الاستثمار في رأس المال البشري في الأندية الرياضة الليبية على حسب استجابات العينة قيد البحث، وكذلك الفروق بين الأندية في مستوى الاستثمار في رأس المال البشري، وقد استخدم الباحث المنهج الوصفي بأسلوبه المسحي، وبلغ أفراد العينة 40 من قيادات الأندية الرياضية في ليبيا بداية من رؤساء الأندية وأعضاء الجمعية العمومية ورؤساء الإدارات وكذلك مدراء الألعاب، وأظهرت النتائج أن هناك ضعف وقصور في مستوى الاستثمار في رأس المال البشري وخاصة في جانب الاستقطاب والصحة والتدريب، وكان والتحفيز في مستوى متوسط، وأنه لا توجد فروق بين الأندية في مستوى الاستثمار في رأس المال البشري
PENGARUH METODE SINTESA TERHADAP PERKEMBANGAN MEMBACA ANAK USIA DINI DI TAMAN KANAK-KANAK
Authors: WULANSARI VITALOKA
Published: June 2024

The development of interest and reading habits should start as early as possible, but children's understanding of letter symbols is still low and they are not able to connect simple writing with the symbols that symbolize it, children are not yet able to connect syllables into a word. because children's curiosity about reading is very lacking, the lack of use of reading methods used by teachers at school so that learning to read is not optimal. This type of research is quantitative using quasi-experimental methods (quashi experiment). The results of the study are 1) the synthesis method influences the development of children's reading skills. 2) By using the synthesis method, it is easier for children to understand the recognition of letters and writing in developing reading skills, 3) The use of the synthesis method in learning activities can develop children's reading skills in recognizing letters and recognizing writing. The synthesis method has an effect on children's reading development and has a positive impact and there are improvements in the learning process, for this reason teachers need to use positive contributing methods and support successful learning.
Tecnología y justicia: Impacto del análisis de recorridos vehiculares en la investigación criminal en Panamá
Authors: Tuñón Pérez Mijaid Joseph
Published: June 2024

Este proyecto de investigación se centra en el estudio denominado "Tecnología y Justicia: Impacto del Análisis de Recorridos Vehiculares en la Investigación Criminal en Panamá” en esta investigación se busca entender la aplicación del análisis de recorridos vehiculares como un elemento material de prueba forense en la investigación de homicidios, secuestros y robos en Panamá. En el contexto de la creciente complejidad de los delitos graves, la utilización de tecnologías avanzadas como GPS en vehículos o trakers, el uso de cámaras de vigilancia y software de análisis de tráfico se ha convertido en una herramienta crucial para las autoridades panameñas. El artículo examina características particulares o aspectos que se consideran en el análisis de recorridos vehiculares y en donde ha jugado un papel determinante en la resolución de crímenes, destacando la metodología empleada y los impactos en el sistema judicial. Además, se analizan los desafíos y oportunidades asociados con la implementación de estas técnicas en el ámbito forense panameño, proporcionando una visión crítica y recomendaciones para optimizar su uso en el futuro.
Bioseguridad en la lucha contra incendios en el vertedero de residuos de Cerro Patacón
Authors: Acosta Caballero Carolina Diana , Arauz Maclaud Josué Xavier , Perez Abrego Lorelis Ginell , Mero Betzaida , Madrid Milisa
Published: June 2024

Este estudio de investigación se realizó para demostrar que los incendios en vertedero de residuos sólidos de Cerro Patacón son incidentes que representan un grave riesgo ambiental y ocupacional por la gran variedad y cantidad de sustancias peligrosas que se liberan a la atmósfera durante estos siniestros. El presente estudio tuvo como objetivo caracterizar la contaminación generada en incendios de vertederos, así como evaluar las medidas de bioseguridad implementadas en labores de extinción. Se utilizó la metodología de revisión bibliográfica para la recolección de la información, se revisaron 10 artículos publicado por distintas revistas tanto en China, Estados Unidos, Italia, Corea del Sur, España, Taiwán y Chile. se observa la presencia de contaminantes como hidrocarburos aromáticos policíclicos, dioxinas, furanos y metales pesados en las emisiones gaseosas y material particulado. Este estudio proporciona una comprensión más profunda de los efectos que tiene sobre la salud del personal de emergencia que atiende este tipo de incidentes, a su vez nos indica que no es un problema solamente en Panamá, sino que otros países cercanos al nuestro también tienen esta problemática. Esta investigación es de gran importante ya que pude ayudar a los gobiernos locales a tomar medidas para reducir los niveles de exposición del personal de emergencia y garantizar la salud de estos.
Impacto de las prácticas de higiene en la salud de la comunidad urbana 4 de abril
Authors: Castillo Fernando , Castillo Medina Jorge
Published: June 2024

El propósito de la investigación fue analizar el impacto de las prácticas de higiene en la salud y bienestar de la comunidad urbana 4 de abril. Guiada por un enfoque mixto, la metodología empleada abarcó la recopilación y correlación de datos cuantitativos y cualitativos. Los resultados destacan el “lavado de manos regular” como la práctica más común de higiene, seguida por el uso de desinfectantes y el mantenimiento de espacios limpios. Aunque la mayoría percibe el lavado de manos como “muy importante”, la falta de acceso a instalaciones sanitarias limita su adopción. Los desafíos más prominentes son la falta de conciencia y falta de recursos, afectando la capacidad de mantener espacios limpios y libres de contaminación. El artículo concluye enfatizando la necesidad de intervenciones para mejorar la infraestructura y proporcionar recursos adecuados, destacando la importancia crítica de entornos limpios para el bienestar psicológico, subraya la relevancia de abordar la falta de conciencia y recursos para fortalecer prácticas de higiene en comunidades urbanas, con implicaciones significativas para la salud pública.
Nuevo perfil de competencias básicas laborales en criminalística según la sociedad en David, 2024
Authors: González Eduardo , Rodríguez Kristin , Thill Abdiel , Henríquez Corella Alfredo
Published: June 2024

El objetivo principal del estudio fue Analizar el nuevo perfil de competencias básicas del profesional en criminalística según la sociedad en David, 2024. Tras revisión bibliográfica de la variable de estudio se identificaron 4 dimensiones; lectoescritura y uso de las matemáticas, tecnología, trabajo en equipo y aprendizaje. Las teorías que sustentas la investigación fueron; la Teoría ERG (1969) de Clayton Alderfer y Teoría de las tres Necesidades de Mcclelland. La metodología parte de un paradigma post positivista de enfoque cuantitativo y un tipo de estudio descriptivo. La población y muestra fue de 142 personas que forman parte del distrito de David. La técnica fue la encuesta y el instrumento aplicado un cuestionario ordinal utilizando la escala de Likert. Los resultados indican que la sociedad esta de acuerdo que los profesionales en criminalística mejoren sus competencias básicas laborales en las áreas por mejorar; redacción y presentación de informes, uso de la tecnología para publicaciones e información, manejo de la matemática, manejo de sus emociones, la empatía, trabajar en su autoestima y la capacidad para resolver problemas.
Análisis tipológico de procesos de tomas de tierras en la Región del Gran La Plata, período 2000-2020
Authors: Alessio Agustín , Rodríguez Tarducci Rocío , Cortizo Daniela , Frediani Julieta
Published: June 2024

El crecimiento de las ciudades latinoamericanas ha estado signado, durante las últimas décadas, por los procesos de producción social del hábitat. Diversos autores han caracterizado dichas acciones como procesos de urbanización inversa, donde las familias primero ocupan la tierra y luego autoconstruyen sus viviendas. En este trabajo se propone un análisis tipológico de las tomas de tierras que tuvieron lugar en la Región del Gran La Plata (RGLP) en el período 2000 a 2020. Se analizarán las formas en las que intervino el Estado; su ubicación en relación a la principal centralidad de la Región y en relación a zonas de peligrosidad hídrica. A partir de lo anterior, se plantean algunos tipos de tomas de tierras, con el fin de aportar a una mejor comprensión del fenómeno, sirviendo a futuros abordajes a la problemática.
Un acercamiento teórico-metodológico al estudio del crecimiento urbano: la periodización de la ciudad de La Plata
Authors: Rojas Chediac Juan Ignacio
Published: June 2024

El presente trabajo tiene por objetivo el desarrollo de una herramienta teórico-metodológica para la comprensión de la expansión de las ciudades a partir de periodos de crecimiento. Desde la perspectiva de la geografía crítica, se busca generar un instrumento conceptual que aporte un marco general para el entendimiento de los estudios urbanos. Con la herramienta elaborada, se analiza el caso de la ciudad de La Plata. La investigación se desarrolla en cuatro partes: i) se construye el marco teórico, destacando las principales categorías que aportan al estudio de la periodización urbana; ii) se elaboran las variables de análisis que determinen periodos de crecimiento en las ciudades latinoamericanas; iii) se indaga en el proceso del crecimiento urbano del partido de La Plata desde su fundación y; iv) se confeccionan palabras finales a modo de reflexión.
Villas y tomas de tierra: políticas de hábitat y organización territorial (Área Metropolitana de Buenos Aires 1980-2000)
Authors: Pacheco Julieta , Atienza Rela Guadalupe
Published: June 2024

En este artículo abordamos el desarrollo de las políticas de hábitat y de las organizaciones territoriales del Área Metropolitana de Buenos Aires (AMBA) durante las décadas de 1980 y 1990, como expresión de la multiplicación de la población obrera relativamente sobrante y de la caída del salario por debajo del valor de la fuerza de trabajo como fuente normal de valorización de los capitales que operan en el país. En particular, analizamos el agravamiento del problema habitacional, bajo la forma del repoblamiento de las villas «erradicadas» de la ciudad en el período anterior, y los procesos de toma de tierras en el conurbano bonaerense; el cambio de la política estatal hacia estos asentamientos y la mediación creciente de la organización territorial en la gestión de las condiciones de reproducción de un fragmento cada vez mayor de la clase obrera.
The Effect of Implant Length and Bone Quality on the Biomechanical Responses of Dental Implant and Surrounding Bone – A Three-Dimensional Finite Element Analysis
Authors: Muhammad Ikman Ishak  , Ruslizam Daud  , Siti Noor Fazliah Mohd Noor  , Khor Chu Yee  , Husniyati Roslan
Published: June 2024

The robustness of dental implant systems in the context of occlusal restoration relies significantly on biomechanical factors associated with the imposition of excessive loads. These factors encompass the macro geometries of the implants, bone qualities, parafunctional oral habits, and specific materials employed. The choice of different implant lengths in different bone qualities may give rise to distinct effects on the way loads are distributed across the interface between the implant and the adjacent bone. As of now, the influence of implant length and bone quality on the surrounding tissues and the stability of implant structure continues to be a matter of debate and uncertainty, particularly in situations involving the possibility of implant failure. This study employed three-dimensional finite element analysis to investigate five distinct implant lengths (4, 6, 10, 13, and 15 mm) in two types of bone quality (type II and III). The bone tissues were characterized through the utilization of computed tomography image datasets and then underwent processing within the SolidWorks software. All geometric configurations were transformed into finite element models, which were subjected to analysis within the ANSYS software. Anisotropic and isotropic properties were attributed to the bone and implant models, respectively. A dynamic occlusal loading quantified at 300 N was applied to the implant body, accompanied by a pre-tension force of 20 N on the screw component. The longer implants exhibited decreased stress magnitudes in type II bone (87.86 – 36.66 MPa) and increased stress magnitudes in type III bone (80.5 – 2128.9 MPa) within the surrounding bone tissue, in comparison to the shorter implants. However, stress within the implant body was generally elevated with the use of longer implants in both bone types (type II: 505.32 – 625.35 MPa; type III: 500.45 – 2186.7 MPa). Irrespective of bone quality, the longer implants predominantly led to lower bone strain levels (type II: 0.006828 – 0.003328; type III: 0.054250 – 0.021678) and overall deformation of the implant-abutment assembly (type II: 0.1458 – 0.1348 μm; type III: 0.1754 – 0.1492 μm) compared to their shorter counterparts. Among all the assessed findings, type III bone displayed a more pronounced adverse impact on the biomechanical responses of the dental implant and neighbouring bone except for the implant stresses under the applied physiological loading.
Utilization of Silica Fume and Sodium Hydroxide in Treated Crumb Rubber for Cement Mortar
Authors: Khairi Supar  , Hairuddin Mohammad  , Masiri Kaamin  , Mohamad Azim Mohammad Azmi  , Mohd Kamaruzaman Musa  , Mohammad Ashraf Abdul Rahman  , Hilton Ahmad  , J. Toby Mottram
Published: June 2024

Cement mortar offers an excellent replacement for materials such as fine aggregate with tire rubber waste in the form of crumbs. It provides excellent environmental and technical benefits to concrete production using recycled materials. As such, it contributes to the sustainable development of the construction industry. This paper mainly emphasizes the strength of untreated and treated crumb rubber from waste tires in cement mortar. Crumb rubber that has been pre-treated with Silica fume (SF) and sodium hydroxide (NaOH) to improve the strength of the mortar mix. This research used a cement-aggregate mix ratio of 1:4 and a water-cement ratio of 1:2. Five different percentages of fine aggregate replacement (0, 3, 6, 9, and 12%) was selected. The compressive strength, density, and water absorption of the mortar were measured at 28 days to find optimum strength. The compressive strength of the cement mortar mixed with treated crumb rubber showed significantly higher values, with an increase of 92% for 12% treated crumb rubber by sodium hydroxide (TN12) compared to untreated crumb rubber. The density value of the mortar cube mixed with treated crumb rubber decreased when the percentage of replacement for treated crumb rubber increased. In the application of roof tiles, lower density values provide an advantage for workability during installation. For water absorption, the treated crumb rubber contributes to a lower percentage of water absorption (acceptable until 6% for SF and 9% for NaOH) compared to the control sample as untreated crumb rubber. Therefore, a mixture of mortar with treated crumb rubber, especially NaOH solution, is better than the untreated crumb rubber specimen.
High Gain Defected Slots 3D Antenna Structure for Millimeter Applications
Authors: Arkan Mousa Majeed  , Fatma Taher  , Taha A. Elwi  , Zaid A. Abdul Hassain  , Sherif K. El-Diasty  , Mohamed Fathy Abo Sree  , Sara Yehia Abdel Fatah
Published: June 2024

The antenna is designed as a 3D structure and is made from a conductible cylindrical antenna cone. The cone structure is realized using etching of elliptical slot array on the antenna. We use a conductible circular reflector under the proposed cone and increase the gain of the antenna. The proposed antenna provides effective bandwidth from 1GHz to 30GHz, but the gain of the proposed antenna is varying between 3dBi and 15dBi in the frequency band we are interested in. Geometrical details of the antenna are optimized numerically using parametric study using CST MWS Software Package. Once the optimal design is arrived at, the results are validated with another software package using HFSS Simulation Technology. The obtained results from both software packages agree very well.
Curvature-Based Active Region Segmentation for Improved Image Processing of Aspergillus Species
Authors: Nur Rodiatul Raudah Mohamed Radzuan  , Haryati Jaafar  , Farah Nabilah Zabani  , Fatin Norazima Mohamad Ariff  , Fatin Nadia Azman Fauzi
Published: June 2024

Aspergillus is one of the most ubiquitous of the airborne saprophytic fungi that can withstand various climatic conditions and could cause multiple type of illness. It can be beneficial to humankind and also can be infectious to humans and animals. Direct microscopic is used by trained microscopist as one of the alternatives in identification process to any specimen that suspected of having fungal infection. Confirmation towards identification is often necessary as the structure of Aspergillus is complex and dissimilar in each cycle. In addition, the structure of some species of Aspergillus are the almost same, which can be incorrectly recognized. In prevention of misidentification, computer-based Aspergillus species identification is proposed. The detection process is the earliest and important process hence, this paper proposed an active region-based segmentation method in order to detect the presence of fungi. This method is literally not depending on the gradient or sharp edges of the object and implementing level set function for curve evolution which able to reduce the computational cost. Originally, this function was developed for tracking fluid interfaces but in this study, this function has been applied to fungi database. Two different methods were tested and compared to observe their ability to segment different 80 of Aspergillus images which included four species. Experiments conducted have been compared with the baseline technique and the proposed method is outperformed in terms of accuracy, specificity with average of 90% and PSNR value of greater than 40dB. Meanwhile the active contour (snake) was slightly underperformed but well performed particularly in terms of sensitivity with greater than 80% for all the species. Moreover, upon scrutinizing the dice coefficients provided in both tables, it becomes apparent that there is a lack of significant variance in the values, except in the instance of Aspergillus fumigatus (active region-based) that which produces a result below 36%.
Visualizing Anthocyanins: Colorimertic Analysis of Blue Maize
Authors: Nur Fatihah Azmi  , Luthffi Idzhar Ismail  , Roshahliza M. Ramli  , Mushthofa Mushthofa  , Medria Kusuma Dewi Hardhienata
Published: June 2024

Anthocyanin, vibrant pigments found in a wide range of plants, including maize, contribute to the red, blue, and purple hues observed in fruits, vegetables, and grains. The inherent color variations in maize, including natural shades of purple, red, blue, and even rainbow colors, pose a significant challenge in accurately assessing maize maturity. This study recognizes the importance of visualizing the distinct blue purplish anthocyanin coloration to determine the optimal harvest time for blue maize, particularly among small-scale producers. To address this crucial need, this research project presents the development of the MaizeMeter, an advanced colorimeter specifically designed to analyze maize color based on anthocyanin pigmentation. Leveraging the power of Internet of Things (IoT) implementation, the MaizeMeter provides real-time monitoring and interpretation of anthocyanin color values. The proposed methodology encompasses the calibration of the color sensor and the prototyping of the MaizeMeter, culminating in the establishment of a comprehensive database of anthocyanin color profiles in blue maize. The generated anthocyanin color database by the MaizeMeter will serve as a vital tool for small-scale farmers and researchers, enabling more efficient and accurate assessment of maize maturity in the future.
Optimising Layout of a Left-Turn Bypass Intersection under Mixed Traffic Flow using Simulation: A Case Study in Pulau Pinang, Malaysia
Authors: Amirah Rahman  , Hongtao Zhu  , Noor Saifurina Nana Khurizan  , Mohd Halim Mohd Noor
Published: June 2024

Various unconventional arterial intersection designs (UAIDs) have been proposed as novel approaches to alleviate congestion at signalised intersections. However, little research has focused on the UAIDs under mixed traffic flow. In Malaysia, a type of unconventional arterial intersection, i.e., the left-turn bypass intersection, is very common. Hence, an alternative two-lane left-turn bypass intersection layout is proposed and compared with two other layouts under mixed traffic flow. An existing intersection in Pulau Pinang, Malaysia is selected as the location of our case study. To compare the three layouts, the state-of-the-art traffic micro-simulation software SUMO is used to model, analyse and estimate operational performances of the studied intersection layouts. To make simulation results more reliable, the simulation model is validated using the GEH empirical test. The performance indicators delay, travel time, speed, and number of stops are used to evaluate the three layouts for low, medium and high traffic volumes. The simulation results show that the left-turn bypass intersection outperforms the intersection without any bypasses, and the proposed intersection performance is better than the two other considered intersections. More specifically, the average delay of the proposed intersection is lower by 2.54s and 4.4s compared to the two other considered intersections in high traffic volume, respectively. Thus, this proposed intersection could be used in urban cities with traffic demand and congestion issues similar to those in this study.
Experimental Analysis of Various Implementations Quantity of Hollow Circular Fins on Solar Still Seawater Desalination
Authors: Muhamad Dwi Septiyanto  , Firmansyah Alwi Sasongko  , Syamsul Hadi  , Eko Prasetya Budiana  , Irfan Santosa  , Catur Harsito
Published: June 2024

This present study conducted an experimental analysis of the use of hollow circular fins (HCF) within the conventional single-slope solar still (CS4) chamber. To enhance energy absorption, the optimal HCF numbers were increased by the available chamber space. The three identical CS4 testing chambers were examined in the climatic conditions of the Sebelas Maret University Faculty of Engineering, located in Kentingan, Surakarta, Indonesia. The HCF absorber is implemented with 176 HCF, 176 HCF, and 216 HCF within the chamber space. The findings indicate that there is a direct correlation between the increased HCF numbers and both productivity and efficiency. The efficiency for 117 HCF, 176 HCF, and 216 HCF is 27.04%, 35.20%, and 42.16% respectively. Therefore, it was determined that correlation analysis significantly contributed to the relationship between the HCF implementation and the different radiation intensities in day-to-day testing. To obtain a more comprehensive analysis, the randomized complete block design (RCBD) experiment in collaboration using least squares regression was conducted to compare the experimental production of CS4 with its predicted value.
Numerical Simulation and Thermal Analysis of Pressurized Hydrogen Vehicle Cylinders: Impact of Geometry and Phase Change Materials
Authors: Mohamed-Amine Babay  , Mustapha Adar  , Souad Touairi  , Ahmed Chebak  , Mustapha Mabrouki
Published: June 2024

This comprehensive study investigates the nuanced aspects of pressurized hydrogen vehicle cylinders during refueling, employing numerical simulation and thermal analysis. The examination encompasses the intricate dynamics influenced by cylinder geometry, mass flow rate variations, and the integration of phase change materials (PCMs). Simulations involving cylinders with diverse length-to-diameter ratios and inlet diameters highlight the impact of these parameters on temperature control. Notably, smaller length-to-diameter ratios prove effective for temperature regulation, while larger inlet diameters mitigate temperature rise. The study further explores the role of varying mass flow rates, revealing that an increasing flow rate during refueling results in the lowest temperature rise. In addition to geometry and mass flow rate considerations, the integration of PCMs is a focal point. Modeling and parametric analysis are employed to assess the feasibility of incorporating these materials. The study contributes valuable insights into optimizing the thermal performance and safety of hydrogen fuel systems. The holistic approach considers the interplay of geometry, mass flow rate dynamics, and the innovative use of PCMs, offering a multifaceted understanding of the factors influencing pressurized hydrogen vehicle cylinders.
Virtual Smartphones: Exploring the Evolution and Impact of Virtualization Technology on Mobile Devices
Authors: Ranjan Ravi Raj , Bargavi Dr. S.K. Manju
Published: June 2024

With the ability to fully immerse users in a virtual environment, virtual reality (VR) has grown in popularity among consumers in recent years. Technology has grown to be one of the most significant tools for communication, which is to be expected to change how companies advertise their goods and services to prospective clients. The purpose of this study is to look at how virtual smartphones: exploring the evolution and impact of virtualization technology on mobile devices perceived usefulness and enjoyment influence customers’ future intention. Nowadays, smartphones are used in the majority of human tasks in daily life, making work easier for people. The work may involve communicating with a different business via video conferencing, emailing documents, using a Google Map to find a place, etc. We all know that smartphones are useful, but occasionally users find it difficult to use them because of a lack of resources. Less storage space, a slow processor, low battery life, etc. are some of the issues. In this work, we present VSP, or Virtual Smart Phone, which is essentially a step toward connecting the real and virtual worlds over the internet with a small projector, camera, speaker, microphone, and cloud computing technology.
Fundamentación teórica: Bases teóricas y contextualización de la investigación
Authors:   Universidad del Zulia, Pereira Burgos Morela , Suárez Wendolin ,   Universidad Tecnológica Metropolitana
Published: June 2024

En este apartado, el objetivo es orientar al investigador en la construcción del sustento teórico sobre el cual se desarrolla el trabajo de investigación; ello implica la revisión de antecedentes, la contextualización de las condiciones que rodean la temática, la definición de los modelos teóricos para anclar el trabajo así como el planteamiento de la hipótesis. El apartado se sustenta en la revisión teórica de autores reconocidos y sigue el formato de la estructura-guía iniciada en el Capítulo I, acompañada del ejemplo-guía, para mostrar de manera sencilla la aplicación de los conceptos abordados.
Cualidades formales y estructurales de los trabajos académicos
Authors:   Universidad Pompeu Fabra, Codina Lluís
Published: June 2024

Se presentas las cualidades más generales y a la vez de mayor nivel de abstracción que otorgan calidad a los trabajos académicos. Esto es, en este apartado en lugar de examinar las propiedades de la investigación que siempre son específicas, nos ocupamos de las que se refieren a su reporte en forma de trabajo académico, y que son más generales. Partimos de la idea de que una buena investigación necesita también un buen reporte, en una relación de retroalimentación.
The geography of women’s informal entrepreneurial activities in urban Zambia: place, mobility and locational decision-making
Authors: Fåhraeus Cecilia
Published: June 2024

Informal entrepreneurship constitutes an essential source of income for women in sub-Saharan Africa. Research has indicated the importance of location to the productivity of informal enterprises, yet we know little about the geography of African women’s entrepreneurial activities and associated decision-making. This article studies how female slum dwellers in Lusaka organise their entrepreneurial activities spatially and how they justify associated locational choices. The study found a substantial variety in spatial arrangements although proximity to the home often took precedence over other business-related considerations. The ability to overcome or take advantage of geography when carrying out business was clearly bound up in wider relationships pertaining to gender, poverty and regulatory frameworks. Important factors contributing to satisfying business-related locational needs included a strong intra-household bargaining position, the ability to outsource reproductive work, social networks, access to financial resources and uneven regulation of space in the residential settlement.

This article was published open access under a CC BY licence:
https://creativecommons.org/licences/by/4.0
.
INVESTIGATING THE EFFECTS OF COVID-19 ON TOURISM IN THE G7 COUNTRIES
Authors: Komasi Hossein , Nemati Alireza , Hashemkhani Zolfani Sarfaraz , Williams Nigel L , Bazrafshan Ramin
Published: June 2024

Natural and human-made crises can significantly impact the development of countries’ tourism industries. The susceptibility of countries to these crises depends on their policies, planning, and management in facing diverse challenges. This article aims to investigate the effects of the COVID-19 pandemic on the tourism industry in G7 countries by comparing rankings and positions on indices in 2016 and 2020. Data collected from the RANking COMparison (RANCOM), Proximity Indexed Value (PIV), and Double Normalization Compromise Ranking of Alternatives from Distance to Ideal Solution (DNCRADIS) models have been utilized for data analysis. The research findings indicate noticeable differences in using different models, as the rankings and positions of G7 countries for the years 2016 and 2020, except for two countries, the United States and France, have been different. The research results demonstrate that the COVID-19 crisis had significant impacts on the tourism industries of G7 countries. Countries like the United States, France, and the United Kingdom appear as leading nations in the tourism industry, while Japan and Canada faced challenges, and Germany and Italy experienced changes in their positions. Based on these results, officials and planners in the tourism industry of G7 countries can make appropriate decisions for the development and improvement of tourism under similar crisis conditions. Moreover, these findings can serve as a valuable guide for other countries in managing similar crises in the tourism industry.
Uncertainty quantification based on residual Tsallis entropy of order statistics
Authors: Shrahili Mansour , Kayid Mohamed
Published: June 2024

In this study, we focused on investigating the properties of residual Tsallis entropy for order statistics. The reliability of engineering systems is highly influenced by order statistics, for example, when modeling the lifetime of a series system and the lifetime of a parallel system. The residual Tsallis entropy of the ith order statistic from a continuous distribution function and its deviation from the residual Tsallis entropy of the ith order statistics from a uniform distribution were investigated. In the mathematical framework, a method was provided to represent the residual Tsallis entropy of the ith order statistic in the continuous case with respect to the case where the distribution was uniform. This approach can provide insight into the behavior and properties of the residual Tsallis entropy for order statistics. We also investigated the monotonicity of the new uncertainty measure under different conditions. An investigation of these properties leads to a deeper understanding of the relationship between the position of the order statistics and the resulting Tsallis entropy. Finally, we presented the computational results and proposed estimators for estimating the residual Tsallis entropy of an exponential distribution. For this purpose, we derived a maximum likelihood estimator.
De la psychose inspirée par les « Jolofes » aux Indes occidentales espagnoles (xvie-xviiie siècles)
Authors: Tardieu Jean-Pierre
Published: June 2024

Le discours de Fernández de Oviedo dans son récit du soulèvement dirigé par des esclaves « jolofes » à Saint-Domingue en 1522 relève de la mentalité de la Reconquête. La couronne espagnole décide alors de couper court avec le risque d’une résurgence du problème musulman dans les Indes occidentales par une série de mesures discriminatoires en matière d’approvisionnement en main-d’œuvre servile, main-d’œuvre pourtant nécessaire à leur développement. Celles-ci n’auraient cependant pas eu les effets attendus sans un contrôle religieux efficace. Pour autant, l’irréductibilité des « Jolofes » et d’autres ethnies islamisées ne disparaîtra pas.
“The voices I hear are not, or not only, in my head”: Transmission through Sounds in Ian McEwan’s Nutshell
Authors: Béligon Stéphanie
Published: June 2024

Ian McEwan’s Nutshell – a contemporary version of Hamlet – is the account by a very eloquent in utero narrator of his mother and uncle’s plot to murder his father, John Cairncross. This contribution analyses transmission through sounds in the novel, in which the narrative is conducted by a foetus who is informed of what is going on around him mainly by what he can hear. Sounds are therefore of paramount importance in the novel.In Nutshell, McEwan provides a celebration of sounds and of the rich acoustic world we are part of without even noticing it; but beyond that, the novel is also a reflection on the nature of sounds and of the peculiar place they occupy in human cognition. As words and language can of course take on an acoustic form, Nutshell also constitutes a metalinguistic comment on the power of the spoken word. This paper first explores how the nature of sounds is presented in the novella and shows that they are intermediary entities between events and substance. The second section analyses how sounds are transmitted to the reader and shows that they induce what Patoine (2015) calls “empathetic reading” (“lecture empathique”). Finally, the third section about voices and identity shows that the characters are defined by the words they use and how they speak, so that identity itself can be transmitted through sounds.
La langue étrangère est-elle si étrangère ? À la recherche de la langue perdue
Authors: De Mattia-Viviès Monique
Published: June 2024

Cet article développe une première étude publiée en 2018 (« Entrer dans la langue ou dans les langues : de la langue maternelle à la langue ‘mat-rangère’« , e-Rea, 16.1 | 2018. https://journals.openedition.org/erea/6502) et traduite en anglais dans un ouvrage paru en juin 2022, Language Learning and the Mother Tongue : Multidisciplinary Perspectives, Sara Greaves et Monique De Mattia-Viviès (eds), Cambridge University Press.Il envisage la notion de transmission sous l’angle de l’acquisition du langage, plus précisément de l’acquisition des sons d’une langue étrangère en relation avec la langue maternelle, et soulève toute une série de questions. Comment la langue maternelle se transmet-elle ? Quel est le rôle du primary caregiver, statistiquement la mère, et de son propre rapport à sa langue maternelle ? Quel est le rôle de l’école, dont la langue présente parfois des différences avec celle de la famille ? Comment cette transmission influe-t-elle sur la façon dont plus tard, en contexte scolaire, l’enfant peut s’approprier (ou non) une langue étrangère ? Quelles leçons en tirer pour l’enseignement d’une langue étrangère, aussi bien dans l’enseignement secondaire que dans le supérieur ? Qu’y a-t-il de spécifique dans l’apprentissage d’une langue étrangère qui amène à interroger la manière dont on l’évalue ? Cet article propose quelques hypothèses de réponse, fondées, au-delà d’une longue pratique d’enseignement, sur une expérience clinique de plusieurs années menée à l’hôpital Salvator à Marseille, dans un service pour enfants présentant des cas de dysphasie. Sur le plan théorique et dans le prolongement de l’observation clinique, le rapport du sujet aux langues est envisagé dans une perspective psychanalytique, qui s’inspire des travaux des psychiatres et psychanalystes de « l’école anglaise » (notamment Melanie Klein, Donald Winnicott et John Bowlby) qui accordent un rôle central aux deux premières années de la vie et à la première figure d’attachement, statistiquement la mère.