2021 IEEE AFRICON最新文献

Cognitive Radio Networks Application in the Fourth Industrial Revolution for Africa Development 认知无线网络在第四次工业革命中的应用，促进非洲发展

2021 IEEE AFRICON Pub Date : 2021-09-13 DOI: 10.1109/africon51333.2021.9570943

B. Awoyemi, B. Maharaj

引用次数: 0

Developing STEM and Team-working Skills Through Collaborative Space Robotics Missions 通过协作空间机器人任务发展STEM和团队合作技能

2021 IEEE AFRICON Pub Date : 2021-09-13 DOI: 10.1109/africon51333.2021.9570851

Karen Su, Evgeniia Bonnet, F. Mondada

引用次数: 1

A Review of Test Voltages Used in Partial Discharge Measurements 局部放电测量用试验电压综述

2021 IEEE AFRICON Pub Date : 2021-09-13 DOI: 10.1109/africon51333.2021.9570871

Tapiwa Venge, C. Nyamupangedengu

引用次数: 1

Practical and Projects Based Learning for Internet of Things 物联网实践与项目学习

2021 IEEE AFRICON Pub Date : 2021-09-13 DOI: 10.1109/africon51333.2021.9570934

Kennedy K. Ronoh, E. Muli, Sam Njuki, Edwin Ngwawe

{"title":"Practical and Projects Based Learning for Internet of Things","authors":"Kennedy K. Ronoh, E. Muli, Sam Njuki, Edwin Ngwawe","doi":"10.1109/africon51333.2021.9570934","DOIUrl":"https://doi.org/10.1109/africon51333.2021.9570934","url":null,"abstract":"The Internet of things is currently a fast-emerging technology. Many sectors and industries have currently adopted IoT into their operations. This calls for IoT-trained graduates. Universities worldwide are currently teaching IoT. In this paper we discuss our experiences in teaching an IoT course at the undergraduate level. The paper discusses how we overcame the challenge of identifying IoT course content and the right learning methodology. Various learning methodologies were identified in the literature and compared. Practical and Project Based Learning (PPBL) was chosen as the learning methodology. PPBL is a modified and enhanced version of project-based learning that incorporates students’ project idea incubation. Existing papers on IoT teaching have applied a different learning methodology or do not present a detailed course content that is in line with the latest developments in the IoT industry. This paper further presents the status of IoT teaching and makes recommendations about how IoT teaching can be further adopted in Kenya. Questionnaires were issued to various universities in Kenya to find out the teaching status of IoT and challenges encountered. A questionnaire was also issued to student to find out the impact of the PPBL methodology. Results show that PPBL is an effective learning methodology.","PeriodicalId":170342,"journal":{"name":"2021 IEEE AFRICON","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122582329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Identification of Critical Success Factors for Turnaround Maintenance Projects 周转期维修项目关键成功因素的识别

2021 IEEE AFRICON Pub Date : 2021-09-13 DOI: 10.1109/africon51333.2021.9570914

Flavia Masubelele, Ernest Mnkandla

{"title":"The Identification of Critical Success Factors for Turnaround Maintenance Projects","authors":"Flavia Masubelele, Ernest Mnkandla","doi":"10.1109/africon51333.2021.9570914","DOIUrl":"https://doi.org/10.1109/africon51333.2021.9570914","url":null,"abstract":"Turnaround maintenance (TAM) projects are important to the organisation’s overall success. However, the attainment of success in these projects is often a challenge due to the uncertainties in the project. It is well recognised that there are many factors that can influence the success of projects. Such factors have been identified for the success of TAM projects, yet the factors have not been prioritised nor examined based on the stakeholder’s perspectives. The purpose of this paper is to identify and evaluate the critical factors that contribute to the success of TAM projects according to the stakeholders that are involved with TAM projects. A literature survey was conducted to extract a list of success factors in TAM projects and based on the review, a questionnaire survey was developed. The mean item scores were used to rank the importance of the success factors according to the responses of the survey. The results indicated that the commitment of all members of the project is critical for project success. This paper provides a better understanding of the factors that can be used to improve the success of TAM projects. The results also illustrate that the critical success factors vary for the different stakeholders in the project due to their roles in the project.","PeriodicalId":170342,"journal":{"name":"2021 IEEE AFRICON","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122802979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Peak Power and Pulse Shape of an Active Q-Switched Fiber Laser Based on Overlap of Narrow Filters 基于窄滤波器重叠的有源调q光纤激光器的峰值功率和脉冲形状

2021 IEEE AFRICON Pub Date : 2021-09-13 DOI: 10.1109/africon51333.2021.9570863

J. Sompo, Kaboko Jean-Jacques Monga, J. Meyer, S. V. Solms

引用次数: 0

Demand Reduction of Electric Water Heaters for Load-Shedding Recovery using Stochastic Control 基于随机控制的电热水器减负荷恢复需求减少

2021 IEEE AFRICON Pub Date : 2021-09-13 DOI: 10.1109/africon51333.2021.9571019

Learn L. Chiloane, Gerald K. Kirui, Yu-Chieh J. Yen

{"title":"Demand Reduction of Electric Water Heaters for Load-Shedding Recovery using Stochastic Control","authors":"Learn L. Chiloane, Gerald K. Kirui, Yu-Chieh J. Yen","doi":"10.1109/africon51333.2021.9571019","DOIUrl":"https://doi.org/10.1109/africon51333.2021.9571019","url":null,"abstract":"Utility-implemented load-shedding aims to balance the supply and demand of a constrained power grid for a scheduled period of time by switching off supply to selected regions. The unintended consequence of this strategy occurs at the return of supply, where an instantaneous peak demand is experienced as an impulse at localised points of the power system. This results in frequent trips on medium voltage breakers that can damage infrastructure and result in delayed return of supply to end-users. The aim of this paper is to examine demand-side management interventions using intelligent control of electric water heaters (EWHs) to reduce the instantaneous peak demand at return of supply. Domestic water heating load was chosen as it is a deferrable, dispatchable, passive load with a high power requirement. The approach taken simulates the loading effect of 3 600 EWHs using three measured tank states and the combination of the Monte Carlo algorithm for probabilistic population behaviour. A typical 150-litre, 3 kW EWH in horizontal orientation is used, with a maximum draw volume of 50-litre per tank per day. It is shown that system changes to load-shedding schedules from a period of 4.5-hours to 2.5-hours beneficially reduces the instantaneous peak demand with the shorter period. For a 3 600 EWH-population, simulated results comparing uniformly distributed stochastic delays for activation time windows within 15, 30, 45, and 60 minutes show that a 15-minute activation time window could reduce the expected peak demand by a factor of two. This is important because intelligent controller retrofits onto EWHs is becoming more ubiquitous and if this simple sub-routine is built-in to produce a short delay after a period of no supply, it could result in significant passive impact on the power grid.","PeriodicalId":170342,"journal":{"name":"2021 IEEE AFRICON","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122181240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Faster R-CNN Based Cephalometric Landmarks Detection 更快的基于R-CNN的头部测量地标检测

2021 IEEE AFRICON Pub Date : 2021-09-13 DOI: 10.1109/africon51333.2021.9570986

L. C. Tabata, Clement N. Nyirenda

{"title":"Faster R-CNN Based Cephalometric Landmarks Detection","authors":"L. C. Tabata, Clement N. Nyirenda","doi":"10.1109/africon51333.2021.9570986","DOIUrl":"https://doi.org/10.1109/africon51333.2021.9570986","url":null,"abstract":"The objective of this study is to identify cephalometric landmarks on 2D cephalograms (X-rays) using a two-stage Artificial Intelligence (AI) based object detection method. The proposed work implements a Faster Region-based Convolutional Neural Network (Faster R-CNN), a deep-neural network, which consists of a 50 layered Residual Network (ResNet50) with Feature Pyramid Network (FPN) as a backbone network. The algorithm is trained and tested on a dataset presented in the IEEE International Symposium on Biomedical Imaging Challenge (ISBI-2015). The detection was based on the algorithm’s performance, in terms of mean error and the success rate under the clinically accepted accuracy range of 2 mm. The hypothesis behind this work was that Faster R-CNN will have a difficulty in detecting the landmarks due to either fuzzy features and, or low-resolution representations, but with help of FPN, the performance might be better. Results show that the model achieves approximately 90% and 0.9 mm in terms success rate and mean error respectively. In terms of future work, there is still a need to improve Faster R-CNN performance by increasing or modifying the dataset. Furthermore, the use of a more powerful computational platform would lead to faster training time, which would give room to the implementation of optimization algorithms of the hyper parameters by using evolutionary computation methods.","PeriodicalId":170342,"journal":{"name":"2021 IEEE AFRICON","volume":"145 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128638587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Implementation of Indirect Field Oriented Control of a 2.2kW Three-Phase Induction Motor Using MATLAB Simulink 利用MATLAB Simulink实现2.2kW三相异步电动机的间接磁场定向控制

2021 IEEE AFRICON Pub Date : 2021-09-13 DOI: 10.1109/africon51333.2021.9570873

A. T. Umoette, O. Okoro, I. Davidson

引用次数: 1

Design and Implementation of an Energy Auto Crediting Scheme for Prepaid Energy Meters 预付费电能表能源自动抵扣计划的设计与实现

2021 IEEE AFRICON Pub Date : 2021-09-13 DOI: 10.1109/africon51333.2021.9570869

A. Ogunjuyigbe, T. Ayodele, Olufemi Balogun, T. Mosetlhe, A. Yusuff

引用次数: 0