SAIEE Africa Research Journal最新文献_第6页

Classifying Economic Areas for Urban Planning using Deep Learning and Satellite Imagery in East Africa 利用深度学习和卫星图像对东非城市规划的经济区域进行分类

IF 1.4

SAIEE Africa Research Journal Pub Date : 2022-11-10 DOI: 10.23919/SAIEE.2022.9945864

Davy K. Uwizera;Charles Ruranga;Patrick McSharry

{"title":"Classifying Economic Areas for Urban Planning using Deep Learning and Satellite Imagery in East Africa","authors":"Davy K. Uwizera;Charles Ruranga;Patrick McSharry","doi":"10.23919/SAIEE.2022.9945864","DOIUrl":"https://doi.org/10.23919/SAIEE.2022.9945864","url":null,"abstract":"Monitoring and assessing the distribution of economic areas in East Africa such as low and high income neighborhoods, has typically relied on the use of structured data and traditional survey approaches for collecting information such as questionnaires, interviews and field visits. These types of surveys are slow, costly and prone to human error. With the digital revolution, a lot of unstructured data is generated daily that is likely to contain useful proxy data for many economic variables. In this research we focus on satellite imagery data with applications in East Africa. Recently East African cities have been developing at a fast pace by building new infrastructure and constructing innovative economic zones. Moreover with increased urban population, cities have been expanding in multiple directions affecting the overall distribution of areas with economic activity. Automatic detection and classification of these areas could be used to inform a number of policies such as land usage and could also assist with policy enforcement monitoring. On the other hand, the distribution of different economic areas in a specific city could provide proxies for various economic development variables such as income distribution and poverty metrics. In this research, we apply deep learning techniques to satellite imagery to classify and assess the distribution of various economic areas of a specific region for urban planning. By benchmarking performance against various state-of-art models, results show that the proposed deep learning techniques yielded superior performance with an f1-score of 99%.","PeriodicalId":42493,"journal":{"name":"SAIEE Africa Research Journal","volume":"113 4","pages":"138-151"},"PeriodicalIF":1.4,"publicationDate":"2022-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/8475037/9945860/09945864.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67832055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Notes for authors 作者须知

IF 1.4

SAIEE Africa Research Journal Pub Date : 2022-11-10 DOI: 10.23919/SAIEE.2022.9945887

引用次数: 0

Sustainable Smart City to Society 5.0: State-of-the-Art and Research Challenges 可持续智慧城市到社会5.0:最新技术和研究挑战

IF 1.4

SAIEE Africa Research Journal Pub Date : 2022-11-10 DOI: 10.23919/SAIEE.2022.9945865

Priyanka Mishra;Prabhat Thakur;Ghanshyam Singh

{"title":"Sustainable Smart City to Society 5.0: State-of-the-Art and Research Challenges","authors":"Priyanka Mishra;Prabhat Thakur;Ghanshyam Singh","doi":"10.23919/SAIEE.2022.9945865","DOIUrl":"10.23919/SAIEE.2022.9945865","url":null,"abstract":"With the growth of data traffic, demand of huge number of digital devices and their interconnection to establish a reliable communication, the internet has become a potential demand of the society. To develop a system that securely connects the internet to real-world space would aid in the advancement of a human-centered society that balances economic progress with the resolution of social issues. This paper provides a detailed aspect of Society 5.0 with its requirements, architecture, and components. We have proceeded extensively with the state-of-the-art Society 5.0 and its link with Industry 4.0/5.0. Furthermore, the role of Society 5.0 in the sustainable development goals of the United Nations is well elaborated. Several emerging communication and computing technologies such 5G/5G-Internet of Things (IoT), edge computing/ cloud computing/ fog computing, Internet of everything, blockchain, and beyond networks have been also well explored to fulfill the demands of Society 5.0. The potential application of super smart cities (Society 5.0) with some real-time experience of inhabitants is thoroughly discussed. Finally, we highlighted several open research challenges with opportunities.","PeriodicalId":42493,"journal":{"name":"SAIEE Africa Research Journal","volume":"113 4","pages":"152-164"},"PeriodicalIF":1.4,"publicationDate":"2022-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/8475037/9945860/09945865.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47902960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Editors and reviewers 编辑和评审

IF 1.4

SAIEE Africa Research Journal Pub Date : 2022-11-10 DOI: 10.23919/SAIEE.2022.9945862

引用次数: 0

Controlling a low cost bang bang pneumatic monopod 控制低成本的气动单脚架

IF 1.4

SAIEE Africa Research Journal Pub Date : 2022-11-10 DOI: 10.23919/SAIEE.2022.9945866

Callen Fisher;Jacques Meyer

{"title":"Controlling a low cost bang bang pneumatic monopod","authors":"Callen Fisher;Jacques Meyer","doi":"10.23919/SAIEE.2022.9945866","DOIUrl":"10.23919/SAIEE.2022.9945866","url":null,"abstract":"—To date there have been great advances in the legged robotics community. However, these platforms are extremely costly to develop and require complex controllers to perform agile motion, limiting their research to well funded institutions, or purely simulation based studies. This research focuses on an extremely low cost robotic monopod platform that consists of a high powered servo motor as well as a pneumatic actuator. Due to the on/off (bang bang) nature of pneumatics, the platform is challenging to mathematically model. Using a reduced order model of the pneumatic actuator, trajectory optimization methods were implemented to generate acceleration, steady-state and deceleration trajectories. These were then analyzed and a simple state machine controller was developed to implement these trajectories on the robotic platform, with comparisons to the simulation results. In order to test the capabilities of the monopod robot, the above method was further extended with the robot running on multiple different surfaces (hard surface as well as two different gravel surfaces). Results are promising and reveal that simple models and controllers are sufficient to generate stable transient motions for a legged robot running on non-uniform terrain.","PeriodicalId":42493,"journal":{"name":"SAIEE Africa Research Journal","volume":"113 4","pages":"165-170"},"PeriodicalIF":1.4,"publicationDate":"2022-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/8475037/9945860/09945866.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44553121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Substrate Integrated Waveguide - Dielectric Resonator Antenna for Future Wireless Communication 用于未来无线通信的衬底集成波导-介质谐振天线

IF 1.4

SAIEE Africa Research Journal Pub Date : 2022-08-09 DOI: 10.23919/SAIEE.2022.9853021

Emmanuel K. Chemweno;Pradeep Kumar;Thomas J. O. Afullo

{"title":"Substrate Integrated Waveguide - Dielectric Resonator Antenna for Future Wireless Communication","authors":"Emmanuel K. Chemweno;Pradeep Kumar;Thomas J. O. Afullo","doi":"10.23919/SAIEE.2022.9853021","DOIUrl":"10.23919/SAIEE.2022.9853021","url":null,"abstract":"A substrate integrated waveguide (SIW) fed rectangular-shaped dielectric resonator antenna (DRA) is proposed for application in the D - Band frequency regime. The Dielectric Resonator (DR) is designed to operate in higher order modes. A rectangular-shaped narrow slot is used to excite the DR element, leading to multiple resonances. The resulting structure is a multi-resonant antenna operating at six frequencies at 123.64 GHz, 125.76 GHz, 127.4 GHz, 129.9 GHz, 134.9 GHz and 137.7 GHz frequencies. These are identified as TE10δ1, TE7δ5, TEδ31, TEδ25, TEδ31 and TEδ35 modes of operation of the resonator, respectively. These resonances are merged to achieve a −10 dB impedance bandwidth ranging between 122.58 GHz and 139.51 GHz, equivalent to 13.4% at a center frequency of 125.76 GHz. Moreover, the antenna possesses a stable radiation pattern in the broadband direction, across the entire frequency band of operation. Simulation results show that the antenna has a peak gain of 12.3 dBi, maximum directivity of 13.14 dBi and maximum efficiency of 84% at a frequency of 126 GHz. Simulated results show that the proposed design has potential and suitability for utilization in future wireless communications.","PeriodicalId":42493,"journal":{"name":"SAIEE Africa Research Journal","volume":"113 3","pages":"119-128"},"PeriodicalIF":1.4,"publicationDate":"2022-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/8475037/9853016/09853021.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46649222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Notes for authors 作者须知

IF 1.4

SAIEE Africa Research Journal Pub Date : 2022-08-09 DOI: 10.23919/SAIEE.2022.9853023

引用次数: 0

Editors and reviewers 编辑和评审

IF 1.4

SAIEE Africa Research Journal Pub Date : 2022-08-09 DOI: 10.23919/SAIEE.2022.9853018

引用次数: 0

A New Method to Distinguish between Nearby and Direct Lightning Strikes for Long Operational Medium Voltage Lines 长运行中压线路近雷击与直雷击判别新方法

IF 1.4

SAIEE Africa Research Journal Pub Date : 2022-08-09 DOI: 10.23919/SAIEE.2022.9853020

Willem J. Dirkse van Schalkwyk;Chandima Gomes;John M. van Coller

{"title":"A New Method to Distinguish between Nearby and Direct Lightning Strikes for Long Operational Medium Voltage Lines","authors":"Willem J. Dirkse van Schalkwyk;Chandima Gomes;John M. van Coller","doi":"10.23919/SAIEE.2022.9853020","DOIUrl":"10.23919/SAIEE.2022.9853020","url":null,"abstract":"Lightning strikes near Medium Voltage (MV) electricity distribution lines cause voltage transients to be induced onto the conductors of the power lines. The resultant Lightning Induced Overvoltage (LIOV) on the phase conductors may be estimated using computer models or measurements. Models and measurements are mostly limited to short floating lines to simplify calculations and to ensure accurate results that can be easily compared between different models. Existing measurement methods cannot be used to distinguish between nearby lightning and direct lightning strikes to an operational MV network by using only one instrument on a line that is more than 100 km long. The instrument needs to be less than a hundred meters from where the LIOV amplitude on the line is the highest. The new method described in this paper allows one to distinguish between nearby and direct lightning strikes to the line; by comparing the polarity of the current transient recorded at the substation to the lightning return-stroke polarity obtained from a lightning detection network. The new method also allows one to determine whether the LIOV of a particular lightning transient exceeded the Basic Insulation Level (BIL) of the line, by observing the power frequency fault current. The new method was applied to an operational 714 km network operating at 22 kV, and the results were compared with predictions in IEEE Std 1410-2010. Significantly fewer line faults due to nearby lightning were observed than predicted; the reason for this is explained.","PeriodicalId":42493,"journal":{"name":"SAIEE Africa Research Journal","volume":"113 3","pages":"108-118"},"PeriodicalIF":1.4,"publicationDate":"2022-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/8475037/9853016/09853020.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42114931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on Payment Settlement Mode in Cross-Border Business Trade Based on Blockchain Technology 基于区块链技术的跨境贸易支付结算模式研究

IF 1.4

SAIEE Africa Research Journal Pub Date : 2022-08-09 DOI: 10.23919/SAIEE.2022.9853022

Xiaoyan Wang

引用次数: 0