International Journal of Progressive Sciences and Technologies
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Etude Pétrographique Comparative Des Laves Des Cônes Volcaniques De Gashole Et Visoke Dans Les Complexes De Virunga (Nord Kivu/ RDC)
Get PDFL’identification et la description des minéraux observés au microscope polarisant sur les Lames mince tirés des laves éruptives de Visoke et Gashole obtenues sur terrain , dans le complexe de Virunga situé au Nord-Kivu où sont focalisés la plupart des cônes volcaniques de la République Démocratique du Congo .Ces observations nous ont données deux séries des faciès: La série feldspathoïdique et feldspathique de Visoke d’une part, et d’autre part, la série feldspathique sur celle de Gashole, et ces analyses nous ont donné le résultat d’une étude classique de leurs paragenèses.
The Current Situation Of Applying And Implementing Quality Management Principles – A Case Study At A Higher Educational Institution In Vietnam
Get PDFIn the context of increasing competition and integration in higher education, quality management has become a strategic imperative for universities. This review article examines the current state of applying and implementing the 07 Quality Management Principles at the University of Finance – Marketing (UFM), Vietnam. Drawing upon ISO 9000 frameworks and institutional practices, the study explores how UFM integrates principles such as customer focus, leadership, engagement of people, process approach, improvement, evidence-based decision making, and relationship management into its teaching, admissions, infrastructure development, and curriculum design. Through a combination of policy analysis, stakeholder feedback, and internal evaluation, the review highlights the positive outcomes achieved, including enhanced student support, curriculum alignment with market needs, and improvements in facilities and digital infrastructure. However, it also addresses key challenges such as resistance to change, resource limitations, and the need for broader stakeholder engagement. Based on these findings, the article proposes practical solutions for institutional leaders to strengthen quality assurance mechanisms and ensure sustainable development in higher education. The study offers valuable insights for educators, administrators, and policymakers committed to advancing quality-driven university governance in the era of educational transformatio
Croissance Démographique Du Bénin (2015-2025), Projection 2060 Et Gouvernance
Get PDFCette étude se focalise sur la croissance démographique au Bénin entre 2015 et 2025, en s'appuyant à la fois sur des chiffres précis et des témoignages qualitatifs. Elle cherche à tracer les grandes lignes des tendances démographiques qui pourraient se dessiner jusqu'en 2060. En intégrant les concepts de transition démographique, de développement durable et de gouvernance, cette recherche examine les conséquences de cette expansion sur les politiques gouvernementales et la gestion des institutions.Les résultats montrent que le Bénin traverse une période de changement démographique significatif, avec un taux de natalité encore élevé et une baisse de la mortalité. Cela signifie que la population du pays connaît une croissance rapide. Les projections indiquent qu'elle pourrait presque doubler d'ici 2060, ce qui exercera une pression considérable sur les infrastructures, les services sociaux et les ressources naturelles.L'analyse actuelle de la gouvernance met en lumière des avancées en matière de décentralisation et d'engagement citoyen, mais aussi des défis importants. Des problèmes de coordination, de transparence et d'intégration des données démographiques dans la planification stratégique limitent la capacité du pays à gérer efficacement ces enjeux.Face à ces constats, plusieurs recommandations sont proposées. Elles visent à transformer cette croissance démographique en un levier pour un développement socio-économique durable.Cette recherche apporte une contribution précieuse à la compréhension des dynamiques démographiques au Bénin et offre des pistes stratégiques pour une gouvernance mieux adaptée aux défis de l'avenir
Contrôle De La Qualité Bactériologique Et Physico-Chimique De L'eau Des Forages Consommée Par Les Etudiants En Milieu Universitaire : Cas De l'Université De Lubumbashi
Get PDFTo control the bacteriological and physicochemical quality of borehole water at the University of Lubumbashi (UNILU) in Lubumbashi, Democratic Republic of Congo, ten samples were collected during the dry season. During the study, sampling campaigns followed by laboratory analyses were conducted during the dry season in August 2025.A total of thirty-two (32) parameters, including six (6) microbiological and twenty-six (26) physical and chemical, were measured. A careful analysis of the measured parameters revealed the following:- 50% of the samples were bacteriologically contaminated;- 100% of the samples met World Health Organization standards based on physicochemical parameters, and 40% of the samples contained heavy metals such as arsenic (As), Lead (Pb), iron (Fe) and manganese (Mn).Their concentrations were generally higher than WHO standards, confirming the visible vulnerability of the waters studied. According to our investigation, water samples from boreholes: P1, P5, P7, P8 and P9 were the most microbiologically contaminated sources; this contamination was attributed to many factors, such as infiltration of wastewater into the groundwater, the underground aquifer or poorly located latrines, poor sanitary protection of boreholes, lack of maintenance or periodic disinfection of the facilities and samples: P5, P6, P7 and P9 have heavy metals. This situation reflects significant contamination probably linked to the local geological nature and mining activities
Profil Biochimique Et Caractéristiques Nutritives Des Feuilles De Leptadenia Hastata (PERS. DECNE) Asclepiadaceae, Utilisées Comme Légumes-Feuilles Par Le Peuple Sénoufo Au Nord De La Côte d’Ivoire
Get PDFLes légumes-feuilles constituent une source importante de protéines, de vitamines et de sels minéraux. Elles contribuent à la sécurité alimentaire en Afrique. L’objectif est de contribuer à garantir la sécurité alimentaire des populations ouest-africaines par la valorisation d’une plante comestible sauvage, Leptadenia hastata. Plusieurs méthodes conventionnelles ont permis de dresser le profil biochimique et les caractéristiques nutritives des feuilles de cette plante. Le pH, la teneur en eau, en cendre, protéine, composés phénoliques et en minéraux ont été déterminés. Les méthodes de réduction du cation abts+ et d’inhibition du radical dpph ont permis d’évaluer l’activité antioxydante des feuilles. Les résultats indiquent que les feuilles séchées à l’ombre ont obtenu une teneur en eau (7,97 ± 0,20 %), en cendre (13,64 ± 0,27 %), en proteine (16,13 ± 0,05 %) et un pH de (6,29 ± 0,01). les oligoéléments étaient plus concentrés au niveau des feuilles séchées à l’ombre avec des teneurs respectives de 3 132,6 8 mg/ kg, 108,96 mg/kg, 3 076,35 mg/kg et 198,30 mg/kg pour le Calcium, le Fer, le Potassium et le Magnésium. Les feuilles de L. hastata disposent d’un bon profil biochimique et pourraient être conservées pendant longtemps. Les caractéristiques nutritives ont révélé, une forte concentration en phénols (17,33 ± 0,01 mg EAG/g d’extrait); en flavonoïdes (14,67 ± 0,05 mg EQ/g d’extrait) et une bonne activité antioxydante (56,05 ± 0,00 µM éqTrolox). Cette plante pourra procurer aux consommateurs les nutriments nécessaires à une bonne santé et lutter contre le stress oxydant et les maladies associées
Causes Des Conflits Armés Dans La Partie Est De La République Démocratique Du Congo « Analyse Et Perspective »
Get PDFLes conflits en répétition dans la partie Est de la République démocratique du Congo sont dues aux causes internes et externes, qui conduisent le pays aux différentes crises qui l’ensanglantent, l’endeuillent depuis des décennies et minent la vie de sa population et son avenir. Cette situation d’insécurité l’étende déjà sur tout le territoire national en affectant le centre (avec le phénomène Kamwena Nsapu), ainsi que la partie Ouest du pays (avec l’avènement de Mobondo). Pour y parvenir, le gouvernement congolais doit mener développer les mécanismes efficaces de défense (une armée forte et dissuasive, un service de renseignement interne et externe) capable d’étouffer ou d’anéantir d’une part, toutes formes des rebellions, et d’autre part, neutraliser toute agression
Time Series Forecasts Of CO2 Emission Variations In Madagascar Based On 1D-CNN
Get PDFThe aim of this work was to use the 1D-CNN model to model the evolution of CO2 emission variations relative to the reference year 1990 in Madagascar. More specifically, the goal was to determine the optimal number of epochs for the 1D-CNN model that produces the best modeling performance. The datasets consisted of an annual time series of CO2 emission variations in Madagascar relative to 1990, covering the years from 1991 to 2022. For the experiment, the dataset was split into two parts: 80% (from 1991 to 2018) was used to train the model, and 20% (from 2018 to 2022) was used to test the model. The simulation was performed every 5 epochs, and the difference between the actual and predicted values was measured using the MAE (Mean Absolute Error) metric. The optimal number of epochs was determined based on the curve showing the evolution of the average MAE between the training and test data as a function of the number of epochs. After simulation, the minimum average MAE was observed at the 1965th epoch. The results of the 1D-CNN model forecasts, extending to a 10-step horizon, predict a more or less stationary trend in CO2 emissions relative to the reference year 1990 in Madagascar beyond 2023
Optimisation Du Rendement Energétique Des Procédés De Méthanisation A Travers Une Approche De Modélisation Mathématique
Get PDFThis research work develops a stabilized Gompertz model to enhance the prediction and optimization of biogas production during the anaerobic digestion of market waste. The proposed approach establishes quantitative links between kinetic parameters (G₀, Rₘ, λ) and substrate characteristics such as dry matter content and the C/N ratio, both identified as key determinants of biogas performance. Experimental results obtained from four types of market waste confirm the model’s ability to capture the main kinetic trends, despite minor deviations linked to temperature variations during digestion. Furthermore, a substrate optimization strategy demonstrates an increase of more than 25% in cumulative biogas production compared with single-substrate digestion. Overall, this research highlights the relevance of kinetic modeling for improving biogas production and guiding the energetic valorization of heterogeneous organic waste streams
Development of Interactive Multimedia in Social Studies Learning to Improve Students' Digital Literacy Skills at SMP Negeri 17 Tulang Bawang Barat
Get PDFThis research and development (R&D) study aimed to create an Android-based interactive learning multimedia to improve digital literacy skills at the junior high school level, specifically within Social Studies learning at SMP Negeri 17 Tulang Bawang Barat. The methodology for this study adhered to the ADDIE model, which systematically guides the process through five distinct stages: Analysis, Design, Development, Implementation, and Evaluation.. The process involved validating the product with experts before testing it with users. The validity and effectiveness were measured using a questionnaire with a Likert scale, analyzed through both qualitative and quantitative methods, including inferential statistical tests. The multimedia was deemed highly valid based on evaluations by media and content experts, with scores of 86.45% and 85.66%, respectively. It was also rated as attractive by teachers and students, with a percentage of 88.83%. Additionally, it was found to be effective, with an N-Gain of 0.73 (high category) and an average digital literacy improvement of 17.01%. The results of this research present an engaging and effective learning media that helps enhance students’ understanding of Social Studies through the development of digital literacy
Political Pressure and Journalistic Independence in Reporting on the Conflict in Gaza, Palestine
Get PDFThe Gaza War since October 2023 has become a dangerous context for modern journalists, with increasing killings, censorship, and widespread restrictions on access to information. This study aims to analyze the forms of political pressure on journalists in their coverage of the Gaza conflict and its impact on journalistic independence. Using a descriptive qualitative approach, data was collected from the coverage of four international media outlets BBC, CNN, Al Jazeera, and The Guardian from 2023 to 2024, and reinforced by reports from international institutions such as CPJ and RSF. Qualitative content analysis used Robert N. Entman's (1993) framing model to identify patterns of reality construction and indications of political intervention. The results show that political pressure on journalists is multi-layered: it stems from state and military policies (access restrictions and field censorship), ideological interests within media editorial structures, and biased digital content moderation on Palestinian issues. This pressure affects journalists' freedom in determining the narrative, framing, and distribution of news, thereby limiting journalistic independence and making it negotiable. However, journalists demonstrate resilience strategies through cross-media collaboration, collective verification, and the use of open source intelligence (OSINT) technology. These findings confirm that press independence in the era of modern conflict is not only determined by individual courage, but also by the infrastructure of global information freedom and the transparency of digital platforms. This research is expected to contribute theoretically to the study of political communication and conflict journalism, as well as to policy recommendations for the protection of journalists and transparency in digital content moderation in the future.