International Journal of Progressive Sciences and Technologies
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Implementation K-Nearest Neighbor (KNN) Algorithm for Identifying Pattern Differences Between Betel Leaves and Pepper Leaves
Get PDFThis research aims to identify the pattern differences between betel leaf (Piper betle) and black pepper leaf (Piper nigrum) using the K-Nearest Neighbor (KNN) algorithm. The method is applied to classify the two types of leaves based on image features such as texture, shape, and color. A total of 200 leaf images were used, divided into 70% training data and 30% testing data. Feature extraction was conducted to obtain the most relevant characteristics from each image. The classification process was performed with various K values, and the highest accuracy was achieved when K = 3. The results showed an accuracy of 91.5%, with a precision of 90.8%, recall of 92.3%, and F1-score of 91.5%. These findings indicate that the KNN algorithm is effective in distinguishing betel and pepper leaves using digital image processing. Texture and color features contributed the most to the classification performance. This study shows the potential of KNN-based leaf pattern recognition for practical applications in agriculture, herbal identification, and plant classification systems
Causes De Justification D’une Infraction En Droit Face A La Lutte Contre L’impunité En République Démocratique Du Congo
Get PDFNotre article fait l’objet de deux points outre l’introduction qui en est le point zéro; le premier point parle sur l’infraction et l’auteur de l’infraction et enfin le deuxième s’est penché sur l’étude des causes de justification face à lutte contre l’impunité. Ainsi dans certains cas ou les faits justificatifs sont établis, l’auteur peut être obligé à une réparation civile si ce dernier n’a pas exécuté son acte dans les limites fixées par la loi, par contre si l’auteur de l’acte se voit justifier et ayant agi conformément à la loi, ne viole pas la lutte contre l’impunité. En effet il faut aussi que les conditions soient réunies pour justifier une infraction
The Effect of Personal Fable on Cyberbullying Tendencies Among Junior High School Students in Medan
Get PDFThe digital era has transformed adolescent social interactions, introducing new risks such as cyberbullying. Adolescents are particularly vulnerable to engaging in or becoming victims of online aggression due to developmental factors, including cognitive and emotional immaturity. This study aims to examine the effect of personal fable on cyberbullying tendencies among adolescents. A quantitative approach was used with 235 students from SMP Negeri 31 Medan as participants. Instruments used include the adapted New Personal Fable Scale (Lapsley et al.) and a researcher developed cybberbullying scale based on Willard's typology. The data obtained were then processed using simple regression analysis. The results indicate a significant positive relationship between personal fable and cyberbullying tendencies. These findings suggest that adolescents with high levels of personal fable are more prone to engage in online aggressive behavior due to a heightened sense of uniqueness and perceived immunity from consequences. The findings are expected to contribute to educational psychology by providing insights for developing effective interventions in schools
Caractérisation Des Champs De Case Dans Le Doublet Lokossa-Athieme Au Sud Du Benin
Get PDFLes champs de case occupent une place de choix dans le doublet Lokossa-Athiémé. Ainsi, cette recherche est de caractériser les champs de case dans le doublet Lokossa-Athiémé au Bénin. L’approche méthodologique adaptée s’articule autour de la collecte des données, le traitement des données et l’analyse des résultats. Au total, 221 personnes ont été enquêtées.Les résultats révèlent que 86 % des exploitants sont propriétaires des champs de case, et 83 % utilisent des semences locales. En termes de fertilisation, 72 % ont recours aux engrais minéraux. Les superficies exploitées sont généralement réduites : 29 % cultivent sur 50 à 60 m². Côté irrigation, 75 % n’utilisent aucun système, traduisant une prédominance des méthodes traditionnelles. 76 % des exploitants pratiquent l’association de cultures, contre 40 % pour la monoculture. Enfin, la production est destinée à 64 % à l’autoconsommation, 26 % à la vente et 10 % à un usage médicinal. Les champs de case sont en majorité gérés par des personnes expérimentées, 39 % des producteurs ayant plus de 20 ans d’expérience. Quant au niveau d’instruction, 40 % des exploitants ont un niveau primaire, et 34 % ont atteint le secondaire.
Sustainable Manufacturing of Oilfield Spare Parts Using 3D Printing: Mechanical Reliability, Economic Feasibility, and HSE Risk Mitigation in Libya
Get PDFThis study evaluates the feasibility of using 3D printing technology to manufacture critical mechanical spare parts in Libyan oilfields, focusing on mechanical performance, economic efficiency, and HSE compliance. Using industrial-grade 3D printers (Markforged X7), valve components, gear housings, and pipe connectors were fabricated from PLA, ABS, and carbon-fiber-reinforced nylon (CFRN). Mechanical testing (ASTM D638/D695) and statistical analysis (ANOVA, Weibull modeling) revealed that CFRN achieved 70% of OEM steel tensile strength (72.3 ± 4.1 MPa vs. 103.5 MPa, p<0.001) with 50% weight reduction, while reducing lead time by 76.7% (30 → 7 days) and cutting costs by 50% per part. However, ABS emitted 85 ± 9.7 µg/m³ PM₂.₅, exceeding OSHA limits (*p=0.013*), necessitating HEPA filtration and enclosed printing systems. The results demonstrate that CFRN is viable for non-critical parts, yielding $2.1M/year savings for mid-sized oilfields, whereas ABS requires stringent HSE controls.Keywords: Additive manufacturing, oilfield spare parts, mechanical reliability, economic feasibility, HSE compliance, carbon-fiber-reinforced nylon (CFRN), sustainable manufacturing
Improving Competency Implementation Discharge Planning Of CNL (PPJA) Using Bandura's Theory Approach
Get PDFThe complex process of preparing patient discharge planning in hospitals to control missed nursing care is an important part, especially in preparing competent Clinical Nurse Leader resources. Efforts to socialize the implementation of SOP discharge planning have been carried out previously but have not shown optimal results, so a competency development method with the Bandura theoretical approach is needed. This study aims to identify the influence of Bandura's theoretical approaches on Clinical Nurse Leaders’ competence in the implementation of discharge planning. This study used a quasi-experimental method with a nonequivalent control group design.. The research sample of 42 primary Care Nurses consisted of 21 intervention groups and 21 control groups with purposive sampling techniques and paired t-test & independent t-test analysis. The results of the study showed that the treatment of the Bandura theoretical approach increased the competence of Clinical Nurse Leaders in the accuracy of medical record documentation of discharge planning, and the perception of the readiness to go home of patients managed by Clinical Nurse Leaders was more significant than that of the control group. Conclusions: Implications Research can improve the quality of nursing care so as to prevent missed nursing care, as an evidence base for nursing, educational teaching materials, and nursing staff development methods.
Petrophysical And Geostatistical Modelling Of Rex Field, Coastal Swamp, Niger Delta
Get PDFPetrophysical properties such as porosity, water saturation Net to Gross (NTG) and hydrocarbon volumes were estimated and integrated to identify potential hydrocarbon reservoirs, assess reservoir quality and productivity, and estimate hydrocarbon volumes to reduce exploration and development risks. Rex field is located the Niger Delta which is reputed as one of the most prolific petroleum provinces of the world, found in the Gulf of Guinea on the West Coast of Central Africa. It is located at latitudes 40490 N and longitude 6000 E, The REX Field is located in the coastal swamp at a water depth of twenty-five meters and it is part of a block area a little above 800km² areas in the southeastern Niger Delta. Wells in the Rex Field consist of basic data needed to compute the petrophysical properties that was required for geomodelling except for REX-05 that came with a missing gamma ray log. Composite volume of shale was therefore estimated from other vshale indicators in REX-05. Probabilistic assessment of the reservoirs was done using a probabilistic assessment tool of porosity, permeability net to gross (NTG) and a variogram model was developed. Reservoir petrophysical properties of the REX Field was determined from well log data from six identified reservoirs, the calculated porosity ranged between 0.22-0.32, water saturation was estimated from resistivity logs showing variation between 0.25 and 0.49. Other petrophysical parameters, such as Net to Gross (NTG) for A04, B04, C01 ranges between 0.744-0.99 and net pay between 21- 120. Geostatistical models showed a laterally flattened continuity, with sand-silt facies tested across various reservoirs. The identified oil reservoirs have stock tank oil initially in place (STOIIP) of 190mbo and the gas reservoir with NTG 0.27-0.99 and net pay range between 21- 130 with a Gas initially in place(GIIP) OF 110bcf. It is therefore recommended that the gas potential of the field be exploited with more concentration on improvement of field development methods
Contexte Et Enjeux Electauraux En Republique Democratique Du Congo
Get PDFLe contexte démocratique en République Démocratique du Congo qui devrait être un régime par le quel, le peuple impose son veto en élisant ses représentent pour un mandat défini sur base d’un programme de société qui s’adapte aux réalités sociopolitique du souverain primaire mais la réalité au Congo-Kinshasa le processus électoral devient un moyen par excellence où une minorité, la classe dirigeante se partage le pouvoir sans la volonté du souverain primaire en organisant une mascarade élection aux besoins et aux appétits des acteurs en compétitions en lieu et place du respect de la volonté exprimée par le peuple. La RDC n’arrive pas à consolider son système démocratique faute du copie collé du régime de type occidental qui correspond au moyen de vie, de la compréhension des choses et d’adaptations des réalités et comportement occidental qui est la résultante ou le reflet des Etats déjà mûrs, développés qui ont déjà posés les bases du développement, est où les institutions et entités de l’Etat sont assisses. Un Etat où les dirigeants et le peuple sont bien préparés, instruits au développement et aux valeurs démocratiques, en définissant ses prérogatives, ses besoins, à aimer et protéger les intérêts nationaux. La République Démocratique Congo devrait partir de la démocratie du modèle occidental en se basant sur ses besoins, ses réalités, son vécu quotidien en l’adaptant aux aspirations souveraines et aux intérêts locaux
Endettement Et Performance Des Entreprises Publiques Congolaises : Analyse Des Impacts Différentiels De La Dette Totale, A Long Et A Court Terme
Get PDFCette étude analyse l’impact des composantes de l’endettement (dette totale DT, dette à long terme DLT, dette à court terme DCT) sur la performance des firmes publiques, mesurée par le rendement des capitaux propres (ROE) et le rendement d’actifs (ROA). En utilisant des modèles à effets fixes (MEF), à effets aléatoires (MEA) et des moindres carrés généralisés réalisables (MGC) sur les données de panel des 36 firmes à participation publique de 2018-2023, les résultats indiquent que l’endettement n’influence pas la ROE, représentant la richesse des actionnaires. Cependant, la dette totale a un effet positif sur la ROA alors que les dettes à court et à long terme ont un impact négatif. De plus, le taux de croissance influence positivement la performance des entreprises. Cette étude contribue à la littérature sur la structure du capital dans un environnement non bancarisé, sans marché financier et politiquement instable. Elle offre des implications pratiques pour les dirigeants, les décideurs politiques, les investisseurs et l’Etat-actionnaire pour rendre performantes leurs sociétés. Les entreprises publiques congolaises devraient adopter des politiques d'endettement prudentes, se concentrer sur l’efficacité opérationnelle et mettre en place des bonnes stratégies d’expansion pour améliorer leurs performances financières
The Impact of Perceived Organizational Support on Workplace Loneliness: The Moderating Role of Agreeableness in Remote and Rural Work Settings
Get PDFThe phenomenon of workplace loneliness is an important concern because it can affect the work experience of employees, especially those who work in remote and rural areas. This study aims to examine the effect of perceived organizational support on workplace loneliness with personality trait agreeableness as a moderating variable. This study was conducted using quantitative methods with 106 respondents who were employees in remote rural areas. The measurement tools used were the workplace loneliness scale, the perceived organizational support scale, and the personality trait agreeableness scale. The analysis in this study was conducted using multiple regression analysis techniques. The results showed that POS had a significant negative effect on workplace loneliness (Beta = −0.498; Sig. = 0.00) and was able to explain 24.8% of the variability in workplace loneliness. Meanwhile, the agreeableness variable did not have a significant direct effect on workplace loneliness (B = −0.277; t = −1.548; Sig. = 0.125). Similarly, the moderation test results show that agreeableness is not proven to be significant as a moderator variable in the relationship between perceived organizational support and workplace loneliness (B = 0.004; t = 1.485; Sig. = 0.141). These findings emphasize the importance of perceived organizational support in reducing workplace loneliness among remote and rural area employees, while the agreeableness personality factor does not strengthen this relationship