International Journal of Progressive Sciences and Technologies
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Leveraging Robotics For Disaster Recovery: Strengthening Resilience In Climate-Vulnerable Regions Of Africa
Full text linkRobotics has emerged as a transformative tool in disaster recovery, offering innovative solutions to mitigate the impacts of climate change and complex emergencies, particularly in Africa's vulnerable regions. Despite significant global advancements, Africa's limited adaptive capacity, systemic poverty, and inadequate disaster recovery frameworks pose considerable challenges to effective disaster management. This study examines the role of robotics in disaster recovery, emphasizing its potential to address the continent's unique vulnerabilities. Drawing on global case studies, the study highlights successful applications of disaster response robotics in search and rescue operations, damage assessments, and surveillance, while identifying key lessons that can be adapted to Africa's socio-economic and environmental contexts.The findings echoed the need for a comprehensive approach to integrating robotics into disaster recovery in Africa. Three core recommendations are presented: first, investment in education and training to build a skilled local workforce capable of driving robotic innovation and deployment; second, fostering public-private partnerships to leverage global expertise, resources, and technologies for localized solutions; and third, developing robust policy frameworks and infrastructure to support the safe, ethical, and effective use of robotics in disaster management. By addressing systemic barriers such as high costs, inadequate infrastructure, and limited technical expertise, these measures can significantly enhance Africa's disaster preparedness and response capabilities.This study concludes that robotics represents a critical avenue for bolstering disaster resilience in Africa, particularly in light of increasing climate-related threats. However, successful implementation requires a coordinated strategy that aligns technological innovation with capacity building, collaborative partnerships, and supportive policies. By embracing robotics as part of a broader disaster management framework, African nations can enhance their adaptive capacities, protect vulnerable communities, and contribute to sustainable development in an era of escalating climate risks
Substitution Of Commercial Feed With Varying Levels And Ages Of Maggots For Laying Hens
Full text linkThis study aimed to investigate the potential of replacing commercial feed with maggots at various ages and levels to assess its impact on the productive performance and egg quality of Hy-Line Brown laying hens. A total of 108 hens, aged 32 weeks, were assigned to a Completely Randomized Design with two factors: maggot levels (0%, 3%, 5%, and 7%) and maggot ages. The substitution of commercial feed with maggots at different ages and levels did not significantly affect feed intake, feed conversion ratio (FCR), egg production, and egg mass production (P>0.05), except for egg weight, which was influenced by the interaction of both factors (P<0.01). Egg yolk color, albumen, and yolk weights were unaffected by maggot age, while maggot level only impacted egg weight. The interaction between factors influenced egg yolk color and albumen weight. The most favorable treatment for the age factor was M1 and M2, while the optimal maggot level occurred at 7% (M3). The interaction of W2M3 generally produced the best performance in terms of egg weight and egg quality
Methods And Techniques In Elementary Teaching
Full text linkAbstract: Methods and technigues in elementary teaching This study discusses Various teaching Mrthods and technigues available to teachers wanting to enlarg their teaching storage . Teachers should use different teaching Methods to Make the learning Pracess exciting and Meaningful. Students will grasp the Material better and boredom will not Find its way to students when teachers use various teaching technigues . This paper talks about those Methods and technigues and provides some teaching and learning theories to help teachers select the best approach . The dicussion in this paper is addresed to elementary teaching , but the Methods and technigues presented in this paper could be used with other levels of education . The study conclude the discussion with some benefits of using different Methods and technigues in elementary eduucation
Analyse Du Jeu Des Acteurs Et Leurs Interactions Dans La Chaîne Des Valeurs Vivrières Du District Autonome De La Comoé A L’Aide De La Méthode Mactor
Full text linkLes cultures vivrières constituent un pilier fondamental pour la sécurité alimentaire et le développement socio-économique en Côte d’Ivoire. Elles sont considérées comme un levier pour la réduction de la pauvreté et la création d’emplois ruraux. Malgré des politiques agricoles ambitieuses visant à accroître la production, améliorer la compétitivité, faciliter l’accès aux marchés et renforcer la résilience face aux aléas climatiques, le secteur vivrier demeure confronté à de multiples contraintes structurelles et organisationnelles. Le District Autonome de la Comoé, qui regroupe les régions de l’Indénié-Djuablin, du Moronou et du Sud-Comoé, présente une diversité agricole notable mais aussi des défis communs qui affectent la performance de la chaîne des valeurs vivrières. Cette étude analyse le jeu des acteurs et leurs interactions au sein de cette chaîne, en s’appuyant sur une démarche méthodologique combinant analyse documentaire, enquête de terrain et analyse stratégique selon la méthode MACTOR. Les résultats révèlent une forte centralisation du pouvoir politique et décisionnel au niveau étatique, reléguant les producteurs locaux à une position marginale dans le processus décisionnel. Malgré une convergence d’intérêts autour des objectifs stratégiques tels que l’augmentation de la production et le développement des infrastructures, la coopération opérationnelle reste limitée, en raison d’un déficit de coordination entre les acteurs. Par ailleurs, des divergences importantes apparaissent sur des enjeux cruciaux, notamment les préoccupations environnementales et les mécanismes de fixation des prix. Ces observations soulignent la nécessité d’un renforcement de la gouvernance multi-acteurs pour améliorer l’efficacité et la durabilité de la chaîne des valeurs vivrières dans le District Autonome de la Comoé
Analyse Du Lien Entre Marketing Et Innovation Dans Une Entreprise De Télécommunications En République Démocratique Du Congo
Full text linkDans un environnement marqué par une forte concurrence et des mutations constantes, les entreprises sont amenées à repenser leurs stratégies, en plaçant l’innovation au cœur de leur démarche de développement. En effet, l’innovation constitue un levier fondamental pour renforcer la compétitivité sur le long terme. Toutefois, cette quête d'innovation doit s’accompagner d’une gestion rigoureuse des risques qu’elle implique. Dans le secteur de la téléphonie mobile, les entreprises à l’image de Vodacom-Congo RDC doivent adapter leurs stratégies marketing aux spécificités du marché ainsi qu’aux attentes de leur clientèle, afin de se différencier de la concurrence. Le présent article vise à proposer une analyse systémique des dynamiques d’innovation et de marketing telles qu’elles sont mises en œuvre au sein de Vodacom-Congo RDC
Β-TCP Synthesis Using Calcium From Calcined Paphia Undulata Shells
Full text linkβ-Tricalcium phosphate (β-TCP) is a promising ceramic biomaterial for bone tissue engineering due to its enhanced biodegradability and osteoconductivity compared to hydroxyapatite. This study synthesized β-TCP using a natural calcium source—Batik clam shells (Paphia undulata)—via precipitation followed by calcination (900°C, 8 hours). XRD analysis confirmed the formation of β-TCP (67.9%) with a trigonal structure (*a* = 10.4352 Å, *c* = 37.4029 Å), alongside β-calcium pyrophosphate (β-Ca₂P₂O₇; 32.1%), attributed to incomplete thermal conversion. SEM revealed agglomerated β-TCP particles (0.5–1.5 µm) with a rough surface morphology. The results highlight the viability of Batik clam shells as a sustainable calcium source for β-TCP synthesis, though further optimization is required to achieve higher phase purity and morphological uniformity. This work advances the development of locally derived biomaterials for biomedical applications
Evaluation of CT Image Quality Based on Signal-to-Noise Ratio in Axial and Helical Scanning Modes with Tube Current Variation
Full text linkThis study aims to evaluate computed tomography (CT) image quality based on the signal-to-noise ratio (SNR) parameter across two scanning modes: axial and helical. An anthropomorphic head phantom was scanned using a Siemens Healthineers Somatom go.Top CT system. The evaluation was conducted using tube current variations of 100 mAs, 200 mAs, and 300 mAs for each scanning mode. This approach was employed to investigate the influence of tube current variation on image quality and to identify the optimal parameter combination that yields the highest image quality. The results demonstrated a consistent increase in SNR with rising tube current for both scanning modes. However, the helical mode tended to produce higher SNR values compared to the axial mode at equivalent tube currents. These findings suggest that the helical mode is superior in producing better-quality images in terms of SNR. This study may serve as a reference for selecting technical imaging parameters to achieve optimal CT image quality. The conclusion indicates that the helical mode at 300 mAs provided the highest image quality, with the highest SNR value of 4.79 and the lowest noise level of 4.43 HU. Nonetheless, it should be noted that higher tube current also leads to increased radiation dose, thus clinical application should be tailored according to patient-specific needs.Keywords: CT scan, signal-to-noise ratio, image quality, axial mode, helical mode, tube current
Universidad, Cultura de la Cancelación y Sororidad: Una Reflexión desde la Universidad Autónoma de Zacatecas
Full text linkEste artículo analiza críticamente las tensiones entre la cultura de la cancelación, el feminismo universitario y el principio de sororidad en el contexto de la Universidad Autónoma de Zacatecas. Se examina cómo las demandas legítimas de justicia social pueden entrar en conflicto con el debido proceso, y cómo ciertas prácticas contemporáneas distorsionan el sentido original de la sororidad. A través de un enfoque ético, político y pedagógico, se proponen estrategias para construir comunidades universitarias más justas, inclusivas y transformadoras
Extracellular Matrix and Angiogenesis in the Uterine Myometrium and Small Growing Leiomyomas in Women of Reproductive Age
Full text linkThis study investigates the role of extracellular matrix (ECM) accumulation and angiogenesis in the growth of small uterine leiomyomas in women of reproductive age. Histological and immunohistochemical analyses were conducted on myometrial and leiomyoma tissues to evaluate ECM content, vascular remodeling, and hormone receptor expression. The results demonstrate that excessive ECM deposition and distorted vascular architecture are early features of leiomyoma development. The nodules show high progesterone receptor expression, altered apoptosis, and active smooth muscle proliferation from vascular zones, suggesting a coordinated interaction between ECM remodeling, angiogenesis, and hormonal regulation in leiomyoma pathogenesis
Ground Motion Prediction Equation (GMPE) For Semarang City Based On Earthquake Data From 2019 - 2024
Full text linkThis study aims to develop a Ground Motion Prediction Equation (GMPE) that accuratelyrepresents the seismotectonic characteristics and local geological conditions of Semarang City,Indonesia, based on earthquake data recorded from 2019 to 2024. Approximately 16,000 earthquakeevents obtained from the Indonesian Agency for Meteorology, Climatology, and Geophysics (BMKG)were analyzed to identify source mechanisms, magnitude, depth, and hypocentral distance. Theempirical GMPE proposed by Sharma (2008) was adopted as the baseline model, establishing alogarithmic relationship among peak ground acceleration (PGA), magnitude (M), and sourcedistance (R). Residual analysis revealed that the baseline model tends to overestimate PGA at shortdistances and underestimate it for small-magnitude events. To improve predictive performance, themodel was modified by incorporating a non-linear variation term accounting for magnitude anddistance effects. The modified GMPE achieved improved performance with R2=0.8949 and RMSE= 0.3294, demonstrating a closer fit between predicted and observed PGA values. Overall, thedeveloped GMPE provides a more accurate representation of ground motion attenuation and siteeffects in Semarang’s complex geological setting. These findings highlight the importance of locallycalibrated GMPEs for enhancing seismic hazard estimation and supporting earthquake-resistanturban planning across Indonesi