International Journal of Progressive Sciences and Technologies
International Journal of Progressive Sciences and TechnologiesNot a member yet
4924 research outputs found
Sort by
Intelligent Dual-Axis Solar Tracker : Experimental Validation of LDR Sensor Tracking Dynamics and Energy Optimization
Get PDFHigher education institutions are increasingly confronted with energy constraints and technological limitations, making the adoption of innovative solutions essential for strengthening university governance and academic performance. This study presents the design and implementation of an intelligent dual-axis solar tracking system aimed at improving the energy efficiency of pedagogical infrastructures. The system integrates an Arduino-based control unit, a real-time tracking algorithm, and a set of light-dependent sensors driving two motors that orient the photovoltaic panel along horizontal and vertical axes.Experimental results show a significant enhancement in solar energy capture, with energy gains between 25 percent and 40 percent compared to a fixed photovoltaic panel under the local climatic conditions of southern Madagascar. This improvement contributes to stabilizing the power supply of educational facilities, particularly in regions affected by frequent electricity shortages.Beyond its technical performance, the system also has strong pedagogical relevance. It offers students a hands-on platform that bridges electronics, mechanical design, and programming, thereby reinforcing applied learning and strengthening research-based training within university programs.Overall, this work demonstrates that technological innovation can serve as an effective tool for improving university governance. By enhancing energy resilience, supporting modern teaching practices, and encouraging local scientific research, the proposed system contributes meaningfully to the advancement of higher education in Madagascar
Sincere Devotion (Ikhlas) and Honor (Izzah) as Protective Factors Against People-Pleasing Behavior: An Islamic Perspective on Authenticity and Adolescent Well-Being
Get PDFThis study examines people-pleasing among Muslim adolescents, characterized by an excessive tendency to seek social approval, particularly in the digital era dominated by social media influences. Such tendencies may undermine intrinsic motivation, reduce autonomy, and hinder the development of a healthy self-identity. This research reviews psychological literature using a qualitative-conceptual approach, including Deci and Ryan's Self-Determination Theory and Erikson's development theory. It integrates them with Islamic teachings on the values of ikhlas (sincerity) and izzah (honor/dignity). The analysis reveals that ikhlas shifts adolescents' orientation from seeking human approval to seeking the pleasure of Allah, thereby strengthening psychological resilience against social pressures. Meanwhile, Izzah reinforces self-worth rooted in faith rather than external validation, fostering healthy self-confidence. The findings emphasize that ikhlas and izzah are in harmony with modern psychological principles, adding a transcendental spiritual dimension that enhances adolescent well-being. This study recommends the active role of parents, educators, and communities in instilling these values through Islamic parenting, character education curricula, and guidance in social media use. Thus, integrating modern psychology and Islamic values can serve as a holistic framework for nurturing resilient, authentic, and potential-driven Muslim youth as part of the golden generation
Surveillance Hydro-Climatique Régionale : Conception D’une Plateforme Pour La Région Itasy
Get PDFCe travail porte sur la conception et la mise en place d’une plateforme de suivi hydro-climatique pour la région d’Itasy. Face aux perturbations environnementales qui affectent cette zone tels que variabilité des précipitations, réduction de la surface du lac Itasy, érosion et pressions sur les ressources en eau, l’objectif est de proposer un outil intégré d’observation, d’analyse et de prévision. La plateforme combine plusieurs sources d’information : données satellitaires (Sentinel-2, ERA5-Land), observations locales (capteurs, mesures manuelles) et modélisation avancée. Elle offre ainsi des fonctionnalités allant de la consultation des prévisions météorologiques pour les agriculteurs jusqu’à l’analyse historique et prédictive pour les chercheurs et décideurs. Grâce à ses modèles numériques avancés et à sa capacité de surveillance des surfaces lacustres en utilisant des indices satellitaires clés comme le NDWI et le NDVI, la plateforme offre une compréhension fine des dynamiques hydrologiques du lac Itasy. Ce projet ouvre également la voie à l'avenir en envisageant l'intégration de données satellitaires commerciales de pointe. L'objectif est de permettre un suivi quasi en temps réel et à très haute résolution, ce qui représente une avancée majeure
Ichthyofauna and Fishing in the Congo River, DR Congo
Get PDFThis study on ichthyofauna and fisheries in the Kindu river region was conducted with the aim of characterizing fishing activities, inventorying fish species and determining the growth of the most captured fish species. A survey and inventories were carried out for nine months, from February to October 2020. For lack of fishing gear, the fish were paid to the artisanal fishermen working upstream and downstream of the Congo River, who use different capture gears including nets (cast net, drifting, fixed), baited hooks and longlines (bottom and surface). Fish species were identified using identification keys such as Fauna of fresh and brackish water fishes of West Africa, Fishes of the Congolese part of the Inkisi, Fresh and brackish water fishes of Lower Guinea, West Central Africa, Fish of the Upper Congo Basin: ichthyological study and establishment of a collection at the University of Kisangani, DR Congo. The fish collected were each time counted and weighed individually in the fresh state using a 0.1 g digital scale of the SCA-301 brand and measured using a 30 cm long ichthyometer. Three measurements were taken from each specimen analyzed, namely: total weight (in g), standard length (in cm) and total length. The standard length is the straight length from the end of the mouth to the end of the most arched caudal peduncle. The results show that the activity of river fishing contributes to the improvement of the living conditions of fishermen by providing income; several fishing gears are used but only the cast net has a higher use (56.2%) by fishermen. The Kindu river region is diversified in fish species in the sense that an identification resulted in 38 species belonging to 14 families. The species Synodontis notatus (9.7%), Labeo senegalensis (7.8%), Distichodus rostratus (5.8%), Chrysichthys nigrodigitatus (5.3%) and Auchenoglanis occidentalis (5.3%) are the most captured. Almost all of the most captured fish species have positive allometric growth except Chrysichthys nigrodigitatus which has negative allometry. Condition factors show that the majority of species studied live in good conditions. Thus, it is crucial that fishing is effectively controlled in the environment because this activity contributes to the survival and well-being of the population
Optimization Of The Efficient Sub-Pixel Convolutional Network Model For Satellite Image Super-Resolution: Study Of Epoch And Batch Size Hyperparameters
Get PDFThis study applied the ESPCN model to the super-resolution of geostationary meteorological satellite images. Using 100 pairs of low- and high-resolution images, the model was trained and tested the by optimizing the epoch and batch-size hyperparameters. The analysis of the PSNR between the reconstructed images and the target images made it possible to identify the optimal values that ensure the best reconstruction quality. The results demonstrated the importance of hyperparameter tuning to improve model performance in the context of satellite image processing
Évaluation De La Symptomatologie De L’anxiété Et De La Dépression Chez Les Adolescentes Victimes De Viol À Kinshasa
Get PDFCette étude a scruté sur l’évaluation de la symptomatologie de l’anxiété et de la dépression chez les adolescentes victimes de viol à Kinshasa, 13 survivantes du viol qui ont constitué notre échantillon, nous avons utilisé un guide d’entretien psychosocial, des échelles d’anxiété et de dépression. Les résultats qui en découlent de ces différents outils ont révélé que le tableau clinique des adolescentes victimes du viol est dominé par la symptomatologie de l’anxiété à 92,3% ainsi que, la dépression certaine à 61,5%
A Stochastic Game Theory Framework For Multi-Agent Decision-Making In Clinical Healthcare Settings
Get PDFThe study focused on a stochastic game theory framework for multi-agent decision-making in clinical healthcare settings, driven by advancement in a clinical and simulation-based environment. Despite advancements in single-agent models, there remains a notable knowledge gap in incorporating multi-agent strategic interactions within stochastic frameworks that adequately addressed uncertainty. The objectives of the study were to: develop a stochastic game-theoretic framework for modeling dynamic, interactive decision-making in clinical healthcare settings, incorporate Stochastic game models based on Markov Decision Processes (MDPs) and Partially Observable Markov Decision Processes (POMDPs), and evaluate outcomes under realistic clinical constraints, including limited resources, diagnostic uncertainty, and time-sensitive interventions, using simulation-based analysis. This study addressed patient progression through distinct health states (critical, serious, stable and recovered), influenced by healthcare interventions and a simulated patient summary table. The study considered the patients as the principal agents; characterized by initial severity (Mild, Moderate, Severe) and risk (Low, Medium, High) which directly influenced their initial states and potential health progression. The study adopted simulation-based analysis framework which was implemented in Python. The computed value function, expected reward for each health state, derived via the Bellman equation. The simulated-based analysis was conducted using transition probability matrices on table 2 and table 4 with a discount factor of 0.95. The method of data analysis was based on Markov Decision Process and Partially Observable Markov Decision Processes. Two (4) matrices were created from simulated-based data for transition probability on “treat” and “wait” actions where the analysis revealed that all states eventually absorbed into ‘recovery with probability 1.0. Based on Markov Decision Process, the expected time to recovery from Critical was 3.25 compared to 6.0 from Serious and 7.75 from Stable. Using a reward structure penalizing critical states (0) and rewarding recovery (+8.5), the expected cumulative reward from each initial state was computed as: Critical = 3.25, Serious = 6.0, Stable = 7.75. Also, using Partially Observable Markov Decision Process on table 9 revealed the values of belief update of 20 stimulated patients which ranged approximately from 152.87 to 167.59, showing moderate variability across patient beliefs The relative closeness of patient value of belief, (v(b)) on table 9 indicated that each patient health state had the potential to recover with an average payoff of 6.8, improving recovery odds by 15-20%. However, the study recommended that the healthcare agents and systems should improve clinical decision-making under uncertainty by applying Markov Decision Processes and Partially Observable Markov Decision Processes to minimize patient times spent in critical or serious health states, delays and costs of care in order to ensure evidenced-based support and overall system performance
Integrating Local Wisdom into Literacy Education: The Role of Punakawan in Shaping Elementary Students’ Character within the Merdeka Curriculum
Get PDFThis study explores the potential of Punakawan storytelling, featuring the Javanese puppet figures Semar, Gareng, Petruk, and Bagong, as an innovative medium to promote Indonesian language literacy and character education in primary schools using the Merdeka Curriculum. The study is inspired by persistent problems of low literacy achievement, as demonstrated by the 2022 PISA results, as well as the growing issue of moral degradation among Indonesian youth in the digital age. Data from five elementary schools in Central Java and Yogyakarta were analyzed using thematic content analysis and source triangulation to map the alignment between Punakawan values and the six dimensions of the Pancasila Student Profile. The findings indicate that Punakawan narratives include fundamental principles such as justice (Semar), honesty and responsibility (Gareng), creativity and critical thinking (Petruk), and openness and solidarity (Bagong). Their humorous but philosophical dialogues serve as a pedagogical bridge for integrating literacy skills, reading comprehension, writing, and storytelling with character development in engaging and accessible ways for young learners. Practical techniques include creating Punakawan-based learning modules, acting out narrative dramatizations, and producing literacy projects like story writing and comics. The study also identifies obstacles, including teachers' poor understanding of wayang, resource limitations, and low student engagement in local culture, and proposes remedies through teacher training, school-community partnership, and authentic measurement. This study advances both theory and practice by demonstrating how local wisdom can be systematically rejuvenated to solve current educational concerns. It advises establishing a Punakawan-based teaching module and performing additional empirical studies to test its effectiveness, ensuring that cultural heritage becomes a strategic bridge toward meaningful, inclusive, and future-ready education
Apport Des Plantes Alimentaires Spontanees Dans La Securite Alimentaire Des Menages Du Territoire De Bulungu
Get PDFCette recherche examine le rôle des plantes alimentaires spontanées (PAS) dans la sécurité alimentaire et économique des ménages ruraux de Bulungu, en République Démocratique du Congo, où près d'un quart de la population est touché par l'insécurité alimentaire. En utilisant une méthodologie combinant enquêtes ethnobotaniques qualitatives et quantitatives auprès de 929 multipares, ainsi que des inventaires floristiques et des analyses botaniques, 193 espèces de PAS appartenant à 81 familles botaniques ont été identifiées. Ces plantes, majoritairement ligneuses (69,5%) et typiques de la zone phytogéographique guinéo-congolaise, sont principalement consommées pour leurs fruits (51%) et feuilles (31,3%), les fruits étant souvent consommés crus. Les ménages consomment les PAS environ six jours par semaine, surtout durant la saison des pluies, où leur disponibilité est maximale.Au-delà de l'alimentation, les PAS contribuent à un revenu annuel moyen de 72 dollars par ménage, représentant 14% des revenus totaux, et favorisent l'autonomie économique des femmes par la collecte et la vente sur les marchés locaux. Les résultats soulignent également une forte transmission intergénérationnelle des connaissances sur les PAS, ancrée dans les traditions des ethnies Mbala, Pindi et Bun. Cependant, la pression moderniste et environnementale menace cette ressource.Comparativement à d'autres régions d'Afrique, Bulungu affiche une diversité modérée de PAS, ce qui souligne le besoin de conservation et de valorisation. L'étude recommande des politiques de gestion durable, la promotion de l’utilisation nutritionnelle et médicinale des PAS, ainsi que des campagnes éducatives pour sensibiliser la population. Ces initiatives sont essentielles pour renforcer la résilience alimentaire tout en préservant le patrimoine ethnobotanique. Cette recherche constitue une base solide pour intégrer les PAS dans les stratégies nationales de sécurité alimentaire et appelle à un engagement accru des autorités locales et des partenaires au développement.Cette recherche analyse l'apport des plantes alimentaires spontanées (PAS) à la sécurité alimentaire et économique des ménages ruraux du territoire de Bulungu, en République Démocratique du Congo, une région confrontée à une insécurité alimentaire aiguë touchant près d'un quart de la population. Par une méthodologie combinant enquêtes ethnobotaniques qualitatives et quantitatives auprès de 929 multipares, inventaires floristiques et analyses botaniques, 193 espèces de PAS réparties en 81 familles botaniques ont été recensées. Ces plantes, majoritairement ligneuses (69,5%) et appartenant à la zone phytogéographique guinéo-congolaise, sont consommées essentiellement pour leurs fruits (51%) et feuilles (31,3%), les fruits étant majoritairement consommés crus. Les ménages consomment les PAS environ six jours par semaine, particulièrement pendant la saison des pluies, période de grande disponibilité. Le rôle des PAS dépasse la simple alimentation : elles génèrent un revenu augmentant à 72 dollars par an par ménage, soit 14% du revenu total, renforçant particulièrement l'autonomie économique féminine via la collecte et la vente sur les marchés locaux.Les résultats démontrent également une forte transmission intergénérationnelle des savoirs sur les PAS, très liée aux traditions culturelles des ethnies Mbala, Pindi et Bun. Toutefois, la pression moderniste et environnementale menace cette richesse. En comparaison avec d'autres régions d'Afrique, Bulungu présente une diversité modérée de PAS, indiquant un besoin accru pour la conservation et la valorisation locale. L'étude recommande l'instauration de politiques de gestion durable des PAS, la promotion de leur usage nutritionnel et médicinal à travers la recherche scientifique, ainsi qu'une sensibilisation des populations par des campagnes éducatives. La valorisation économique est également soulignée pour soutenir la commercialisation durable des PAS. Ces actions sont fondamentales pour renforcer la résilience alimentaire du territoire tout en préservant son patrimoine ethnobotanique et écologique.Cette enquête offre une base solide pour mieux intégrer les PAS dans les stratégies nationales de sécurité alimentaire et invite à renforcer l'engagement des autorités locales, des communautés et des partenaires au développement dans la gestion durable de ces ressources vitales
Effect of Silicone Rubber–Tungsten Bolus on Surface Dose in Photon Radiotherapy
Get PDFThis study investigates the characteristics and dosimetric performance of a Silicone Rubber-Tungsten (SR-W) bolus synthesized with 10 wt% tungsten. Material characterization included density measurement, Energy Dispersive X-ray (EDX) analysis, and relative electron density (RED) evaluation. The SR-W bolus demonstrated a physical density and RED comparable to bone tissue. Surface dose measurements using a photon beam LINAC showed a significant increase in surface dose when the SR-W bolus was applied compared to no-bolus conditions. The enhancement is attributed to the high-Z tungsten content, which increases secondary electron production and shifts the dose build-up region toward the surface. These results indicate that the SR-W bolus has strong potential as an effective surface dose modifier in photon radiotherapy