International Journal of Progressive Sciences and Technologies
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Usage Des Matériels Didactiques Dans La Situation D’Enseignement-Apprentissage Dans La Ville Province De Kinshasa : Approche Descriptive Des Difficultés Scolaires
Get PDFLa leçon étant un processus par lequel l’enseignant inculque les connaissances aux apprenants, sa réussite dépend d’un certain nombre des critères ou qualité. Ainsi, une leçon réussie est celle dont les intentions pédagogiques fixées au départ par l’enseignant ont été atteintes. Il est important de noter que certaines leçons pourtant bien dispensées par les enseignants rencontrent des difficultés de compréhension par les apprenants suite à un mauvais usage des matériels didactiques dans la situation d’enseignement-apprentissage. Ainsi, cette étude se veut de déceler les différentes difficultés rencontrées par les enseignants pour utiliser les matériels didactiques afin d’en proposer les solutions, pour un enseignement de qualité. Les résultats, de cette étude, ont permis de comprendre que la majorité des enseignants (81,4%) atteste d’avoir vu leurs collègues enseigné sans Matériels Didactiques et qu’ils aussi déjà vécu des problèmes dans l’utilisation de Matériel Didactique. Ces problèmes se résument par les faits qu’ils: (i) n’ont pas maitrisé et assimilé les notions du cours de dessin pédagogique aux humanités; (ii) ne savent le comment ni à quel moment de la leçon faut-il utiliser les Matériel Didactique ; (iii) pensent que l’utilisation de Matériel Didactique gaspille et consomme plus de temps prévu pour une leçon. Mais aussi qu’il est difficile d’utiliser ou de manipuler correctement les Matériel Didactique dans une leçon et que l’usage de Matériel Didactique crée de dérangement de confusion, de désordre et brise le climat serein de la classe. Face à toutes ces difficultés, l’étude a apporté sa modeste contribution dans la recherche de solution pour pallier à ces problèmes
Prevalence of Hyperpigmentation Disorders in Fitzpatrick skin types
Get PDFAbstract: Hyperpigmentation is a multifactorial skin condition that mainly affects individuals with Fitzpatrick skin types III-VI.UV radiation from sunlight is the main trigger for hyperpigmentation, which is also associated with increased risk of skin cancer. Tobacco smoking and air pollution, along with several other risk factors, contribute to the development of hyperpigmentation. Despite it being very prevalent and also having a high psychosocial impact, it is an underrepresented condition in dermatological research. The main objective of this cross-sectional study is to assess the prevalence, patterns, and its psychosocial impact across individuals of different skin types. It also significantly affects the quality of life, especially in individuals with darker skin tones. Awareness of the treatment options and their affordability should be addressed to the general public.
Coûts Et De L'Efficacité De La Qualité Des Soins De Santé Primaire Au Service De Santé Du Deuxième Echelon A L’hôpital Bon Berger De Tshikaji
Get PDFIntroduction : Notre recherche porte sur les coûts et de l'efficacité de la qualité des soins de santé primaires au service de santé du 2ᵉ échelon à l’hôpital Bon Berger de Tshikaji. D’une manière générale, ce travail vise à évaluer le coût et l'efficacité de la qualité des soins de santé primaires au service de santé du 2ᵉ échelon à l'hôpital Bon Berger de Tshikaji et de la promotion de l’équité et de la solidarité pour le partage de risque sanitaire et de revenu dans l’accès aux soins de santé. D’une manière spécifique : Identifier les modes usuels de paiement des soins de santé primaires à l'hôpital Bon Berger de Tshikaji dans la ZS Tshikaji ; déterminer l’appartenance de la population aux organes de co-paiement des soins tels que les agences d’assurance santé et/ou la mutuelle santé dans la ZS Tshikaji ; déterminer la perception de la population sur l’équité des soins de santé à l'hôpital Bon Berger de Tshikaji.Méthode : pour la réalisation de ce travail, nous avons opté pour une étude d’observation descriptive transversale avec la méthode prospective.Résultats : 71,56 % de nos enquêtés avaient répondu avoir l’accès aux soins par la référence de Cs à l’HGR ; 61,61 % de nos enquêtés avaient répondu très satisfaits ; 47,39 % de nos enquêtés avaient répondu toujours à la fréquence de satisfaction ; 64,45 % de nos enquêtés avaient répondu non relativement abordable par rapport au cout des soins ; 74,4 % de nos enquêtés avaient dépensé plus de 1000.000 FC pour leurs soins de santé ; 64,45 % de nos enquêtés avaient des difficultés pour payer les soins ; 71,09 % de nos enquêtés estimaient que le coût des soins par rapport à la qualité était juste ; 82,94 % de nos enquêtés avaient suggéré la gratuité des soins
Analysis Of Turnaround Time Delays In C-Check Of Airbus 330 Aircraft Using Root Cause Analysis Method
Get PDFTurnaround Time (TAT) refers to the time required to perform aircraft maintenance. Delays in TAT can result in significant losses for companies and disrupt flight schedules. This issue occurred during the C-Check of Airbus 330 aircraft at PT. XYZ from 2019 to 2023, where a TAT deviation of 67.21% was observed. The purpose of this study is to identify the factors and root causes of these delays and propose improvements to minimize TAT delays. The method used is Root Cause Analysis, including Pareto Diagram, Fishbone Analysis, 5 Whys, and 5W+1H. The study results indicate that the main causes are nill stock material (46.34%), late findings (36.59%), robbing activity (12.20%), and tool availability (4.88%). The major contributors, nill stock material and late findings, accounted for 82.93% of the delays. The root causes include insufficient double checks, lack of manpower, long lead times, complacency, inadequate facilities, and limited funds. Suggested improvements include training for planners and technicians, strict supervision and double-checking, prioritization of fund allocation, forecasting, and RFQ for material need
Synthesis Gold Nanoparticles as Advanced Computed Tomography Contrast Agents using Pulsed Laser Ablation Method
Get PDFIn this study, gold nanoparticles (Au NPs) were successfully synthesized using the pulsed laser ablation technique with an Nd:YAG laser. The successful formation of these nanoparticles was evidenced by the color change of the colloid from translucent to purple. The synthesized Au NPs were then evaluated and compared to iodine-based contrast agents at three different kVp settings: 80 kVp, 100 kVp, and 120 kVp. When applied as CT contrast agents, Au NPs exhibited superior performance, as demonstrated by the maximum CT Number value of 7.43 HU and the maximum Contrast-to-Noise Ratio of 2.85, which significantly surpassed the performance of the widely used iodine-based contrast agent across the tested kVp variations. The results in this experiment hints that Au NPs hold significant potential as effective contrast agents for CT-Scan imaging techniques
Utilization of Remote Sensing Technology in Flood Risk Mapping: A Quantitative Approach for National Stability
Get PDFThis study evaluates the role of flood early warning systems in supporting national stability and enhancing national defense through the use of weather radar and Geographic Information Systems (GIS) technology. The study focuses on the DKI Jakarta area which has a high risk of flooding. Rainfall data, weather radar, and spatial analysis are used to identify potential flooding and support rapid and accurate decision making. The results of the study indicate that the implementation of technology-based early warning systems significantly increases the effectiveness of disaster mitigation and minimizes its impact on communities and national vital infrastructure. This study emphasizes the importance of integrating advanced technology into disaster risk management strategies to strengthen national resilience
Motivating Human Resources Through A Strategic Choice By Managers, The Strategic Alliance, In The Context Of Small And Medium-Sized Enterprises In Antananarivo - Madagascar
Get PDFThe typology of the Malagasy private sector shows a majority of small and medium-sized enterprises, so to study their behavior is important in order to contribute to the country's economic and sustainable development. But in Madagascar today, a whole range of negative factors still affect and reduce the competitiveness of these enterprises. According to the survey carried out by Finance, Technology, Human resources, Management Consulting, these enterprises are encountering managerial problems. Antananarivo was chosen as the study area because most Malagasy small and medium-sized enterprises are concentrated in it. The question then arose: how could the managerial problems encountered by small and medium-sized enterprises be remedied? After a preliminary survey, it was found that there was a crucial problem in terms of motivation. A series of questions arose: In which area of human resources motivation is this thesis particularly concerned? The respondents' answers point to problems with the source of motivation. So, what new source of motivation could then improve human resources motivation in small and medium enterprises? The main objective of the research is to find a new source of motivation for small and medium-sized enterprises employees. The following research hypothesis was put forward: The use of strategic alliances influences the motivation of human resources in partner companies. The specific objectives of the thesis are to theoretically present and empirically verify the above hypothesis in an attempt to respond to the research problem. A specific methodological approach has been adopted in order to achieve the objectives of the thesis
Indicateurs des changements climatiques sur le Plateau d’Allada au Sud du Bénin (Afrique de l’Ouest)
Get PDFLes changements climatiques constituent les modifications du climat résultant de la composition de l’atmosphère et de l’activité humaine sur le Plateau d’Allada. La démarche méthodologique adoptée s’articule autour de la collecte des données, du traitement des données et de l’analyse des résultats. Le traitement des données a été réalisé à l’aide des logiciels Khronostat, SPSS et ArcView. Les résultats de la recherche montrent que les indices sont compris entre -2,09 et 3,17 sur la série d’étude (1951-2020). Les années déficitaires sont plus étudiées durant cette phase ; ce qui signale que la récession pluviométrique a démarré dans les années 80. Il s’observe une rupture de stationnarité en 1980 dans la série pluviométrique selon le teste de Pettitt. Les températures maximales et minimales ont connu une hausse. L’augmentation des températures minimales est significative au seuil de 5 %. La p-value calculée au niveau des températures maximales est supérieure à 0,05. Cette hausse de la température maximale n’est pas significative. Néanmoins, les dernières décennies ont connu une hausse des températures minimale et maximale au regard de leur tendance à la hausse. La déforestation (46 % des personnes interrogées), le non-respect des normes sociales (30%), les feux de végétation (14%) et la volonté divine (10%) constituent les causes des changements climatiques sur le Plateau d’Allada selon les agriculteurs et agricultrices
Quantifying the Influence of Pedagogical Approaches on Student Achievement in Lagos State, Nigeria.
Get PDFThis study investigates the relationship between teachers' quality and the academic performance of junior secondary school students in Islamic Studies. Conducted in Oshodi-Isolo Local Government Area, Lagos State, 90 students were randomly assigned to three groups, each taught using one of the methods. Pre-tests and post-tests were administered to assess student performance. Statistical analysis was conducted using t-tests and regression models in SPSS. The results indicated no significant difference between the methods, with significance levels above 0.05, suggesting that no single method consistently outperforms the others in terms of improving student performance. The study concludes that teachers should adapt their methods to the needs of the students and the nature of the subject matter to maximize effectiveness
The Evaluation And Investigation Of Green Corrosion Of The Low Carbon Steel And Inhibition Of The Leaf Extract Using Weight Loss Technique
Get PDFThe green corrosion inhibition of buried low carbon steel (LCS) (in different molarities of acid) using orange leaves extract (OLE) as inhibitor has successfully been carried out. The soil sample was characterized to determine its resistivity, chloride and sulphate content, oxidation-reduction potential (ORP) and corrosively towards buried structural material while the absorbed film on LCS surface was characterized using FTIR spectrophotometer to determine the functional groups weight loss measurement, tafel technique were used to determine the corrosion behavior of the metal in the composed medium. The corrosion media were hydrochloric acid (1.0m and 2.0m) an sulphuric acid (1.0m and 2.0m). The weight loss tests were carried out at room temperature and inhibitor concentration of 0.5 to 2.5g/l over a time interval of 25 to 125hours. Result show that OLE is a good corrosion inhibitor of low carbon steel in acidic medium over the time interval of study, the inhibition efficiency of the OLE increased with increase in inhibitor concentration. The highest inhibition efficiency obtained was 89.61% in 1.0m H2SO4, it follows that OLE as better as inhibitor in H2S04 than in HCL. Also, the effectiveness of OLE as an inhibitor is higher at lower acid concentration both the open circuit potential and the Tafel plots collaborate the results obtain from weight loss technique. The FTIR spectroscopic analysis reveals the presence of organic compounds, alkyl halides and nitro-compounds these seem to be the functional groups responsible for the inhibition characteristics of the OLE