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2021 IEEE AFRICON最新文献

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Quality of Service Enabled Network Slicing Model in 5G and the Next Generation Virtualized Networks 5G和下一代虚拟化网络中服务质量支持的网络切片模型
Pub Date : 2021-09-13 DOI: 10.1109/africon51333.2021.9571005
Poovendren Govender, K. Ogudo, Chabalala S. Chabalala
The demand for high-speed connectivity has increased globally. The covid-19 pandemic, which forced global lockdown and directly led to most of the global workforce to telecommute, dramatically exacerbated the need for quality mobile connectivity and high data rates. The 5th generation of mobile communication technology (5G), with its ultra-low latency and high bandwidth capacity, becomes a natural fit to overhaul communication infrastructure to meet the connectivity demands. Key to 5G’s performance is network slicing, which allows for the 5G network to be segmented into virtual networks that can be used to serve specific industry verticals. To assure Quality of Service (QoS), our paper proposes a model that creates network slices with respect to QoS requirements for various industry verticals. The proposed model is designed and evaluated using a software simulation technique, and the results obtained show that QoS-enabled network slicing guarantees improved performance in terms of throughput and loss in highly varying network conditions.
全球对高速连接的需求不断增加。2019冠状病毒病大流行迫使全球封锁,并直接导致全球大多数劳动力远程办公,这大大加剧了对高质量移动连接和高数据速率的需求。第五代移动通信技术(5G)以其超低延迟和高带宽容量,成为彻底改革通信基础设施以满足连接需求的自然选择。5G性能的关键是网络切片,它允许5G网络被分割成虚拟网络,可用于服务特定的垂直行业。为了保证服务质量(QoS),本文提出了一个模型,该模型根据各种垂直行业的QoS要求创建网络切片。采用软件仿真技术对所提出的模型进行了设计和评估,结果表明,在高度变化的网络条件下,qos支持的网络切片保证了吞吐量和损失方面的改进性能。
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引用次数: 0
Assessment of the Used Mobile Applications by Small-Scale Farmers at Miono and User Requirements in the Present and Future Mobile Apps 对Miono小农使用的移动应用程序的评估以及当前和未来移动应用程序的用户需求
Pub Date : 2021-09-13 DOI: 10.1109/africon51333.2021.9570945
Ezra Misaki
The revolution of smartphone usage in agriculture by small-scale farmers has improved productivity by establishing a reliable agricultural knowledge information system. Despite the development achieved by the smartphone in agriculture, information on how the applications improve the farming value chain is still very scanty. Consequently, this study set out to assess the currently used application technologies by small-scale farmers at Miono to upgrade the user requirements for present and future applications. The study applied qualitative interview and observation approach in collecting data and thematic analysis to analyze the data. Results show that farmers at Miono used messaging applications, call applications, calculator apps and clock applications the most. On the other hand, the farmers rarely used WhatsApp, Facebook, email applications, and photo apps. Thus, for real present and future development, farmers need upgraded apps that disseminate information on local pests, pesticides, weather forecasts, and market information.
小农在农业中使用智能手机的革命,通过建立可靠的农业知识信息系统,提高了生产力。尽管智能手机在农业方面取得了发展,但关于这些应用程序如何改善农业价值链的信息仍然很少。因此,这项研究开始评估米奥诺小农目前使用的应用技术,以提高当前和未来应用的用户需求。本研究采用定性访谈法和观察法收集数据,采用专题分析法对数据进行分析。结果显示,Miono的农民使用短信应用程序、电话应用程序、计算器应用程序和时钟应用程序最多。另一方面,农民很少使用WhatsApp、Facebook、电子邮件应用程序和照片应用程序。因此,为了当前和未来的真正发展,农民需要升级应用程序,传播当地害虫、农药、天气预报和市场信息。
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引用次数: 1
A Performance Evaluation of 3D Deep Learning Algorithms for Crime Classification 三维深度学习犯罪分类算法的性能评价
Pub Date : 2021-09-13 DOI: 10.1109/africon51333.2021.9570983
Tawanda Matereke, Clement N. Nyirenda, Mehrdad Ghaziasgar
This paper presents a study on crime classification using two 3D deep learning algorithms, i.e., 3D Convolutional Neural Network and the 3D Residual Network. The Chicago crime dataset, which has 7.29 million records, collected from 2001 to 2020, is used for training the models. The models are evaluated by using F1 score, Area Under Receiver Operator Curve (AUROC), and Area Under Curve - Precision Recall (AUCPR). Furthermore, the effectiveness of spatial grid resolutions on the performance of the models is also evaluated. Results show that the 3D ResNet-18 achieved the best performance with an F1 score of 0.9985, whereas the 3D CNN achieved an F1 score of 0.9979, during training with a spatial resolution of 16 pixels. Furthermore, the 3D ResNet-18 achieved an accuracy of 0.92 and the 3D CNN achieved an accuracy of 0.87 during model testing. In terms of future work, we intend to test these algorithms on multi-label classification and regression crime problems, improve the performance of the 3D CNN by adding RNN layers, and evaluate the implementation of 3D ResNeXt for crime prediction and classification.
本文利用三维卷积神经网络和三维残差网络这两种三维深度学习算法对犯罪分类进行了研究。芝加哥犯罪数据集从2001年到2020年收集了729万条记录,用于训练模型。采用F1评分、接收算子曲线下面积(AUROC)和曲线下面积-精确召回率(AUCPR)对模型进行评价。此外,还评估了空间网格分辨率对模型性能的影响。结果表明,在空间分辨率为16像素的训练过程中,3D ResNet-18的F1得分为0.9985,而3D CNN的F1得分为0.9979。在模型测试中,3D ResNet-18的准确率为0.92,3D CNN的准确率为0.87。在未来的工作中,我们打算在多标签分类和回归犯罪问题上测试这些算法,通过添加RNN层来提高3D CNN的性能,并评估3D ResNeXt在犯罪预测和分类方面的实现。
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引用次数: 0
Academic challenges as part of capstone project resilience training 作为顶点项目弹性训练的一部分的学术挑战
Pub Date : 2021-09-13 DOI: 10.1109/africon51333.2021.9570882
Jacob J. Greeff, A. Nel, Reolyn Heymann, Johnson Carroll
Capstone projects are the projects students undertake during undergraduate studies where they serve as the final gatekeeping process in engineering degrees to ensure students have the ability to leverage all of the knowledge they have gained in the solving of an open ended problem. As part of a larger project to improve the experience of students in a capstone project module, a challenge-based system has been implemented with inspiration taken from the Superbetter approach. This paper introduces the wider project context, presents the three design cycles the challenge system went through and presents results. In this paper it is shown that the implementation of the artefact was ultimately not a success, and the reasons for this are explored and recommendations for the implementation of similar systems in the future in other contexts are presented.
顶点项目是学生在本科学习期间进行的项目,它们是工程学位的最后把关过程,以确保学生有能力利用他们在解决开放式问题时获得的所有知识。作为一个更大项目的一部分,以提高学生在顶点项目模块中的体验,基于挑战的系统已经实施,灵感来自Superbetter方法。本文介绍了更广泛的项目背景,介绍了挑战系统经历的三个设计周期,并给出了结果。在这篇文章中,它显示了工件的实现最终不是成功的,并探讨了其原因,并提出了未来在其他环境中实现类似系统的建议。
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引用次数: 1
Wireless sensor network for water pipe corrosion monitoring 用于水管腐蚀监测的无线传感器网络
Pub Date : 2021-09-13 DOI: 10.1109/africon51333.2021.9571008
Jacobus Kampman, Judas Masela, T. Joubert
The development of accurate corrosion models from corrosion data is a key requirement for well informed, preemptive actions towards extending the life of water infrastructure systems and reducing maintenance costs. This work presents the development of a custom proof-of-concept system implementation performing water corrosion monitoring using custom integrated corrosion sensing technologies powered by energy harvested through an in-line turbine generator. Implementing a star topology network of wireless corrosion sensor nodes distributed through water infrastructure systems offers an innovative solution for real-time and on-line monitoring of corrosion in water infrastructure systems. The wireless sensor network includes a wireless access point that provides an interface for retrieval of the corrosion data and a nexus for communications. A low-power bidirectional data transfer communications protocol using a form of time-division multiplex access is designed and implemented towards the optimisation of energy efficiency in the network. In an emulated pipeline field setup, the energy harvested and stored provides 125.80 mWh at 4.89 V for an in-pipe flow rate of 13.25 l/min, a typical value for municipal potable water supply in South Africa. The local node ER sensor can of measure changes in resistance values to an accuracy of 1% and will be usable in-system for a year. The access point implements EIS and LPR sensing. The extracted LPR value predicts a corrosion rate is 63.0 um/year in potable water.
从腐蚀数据中开发准确的腐蚀模型是延长水基础设施系统使用寿命和降低维护成本的关键要求。这项工作展示了一种定制的概念验证系统的开发,该系统使用定制的集成腐蚀传感技术,由在线涡轮发电机收集的能量提供动力,执行水腐蚀监测。实现分布在供水基础设施系统中的无线腐蚀传感器节点星形拓扑网络,为实时在线监测供水基础设施系统的腐蚀提供了一种创新的解决方案。无线传感器网络包括一个无线接入点,该接入点提供用于检索腐蚀数据的接口和用于通信的连接。为了优化网络中的能源效率,设计并实现了一种使用时分多路接入形式的低功耗双向数据传输通信协议。在模拟管道现场设置中,收集和储存的能量在4.89 V下提供125.80 mWh,管内流速为13.25 l/min,这是南非市政饮用水供应的典型值。本地节点ER传感器可以测量电阻值的变化,精度为1%,并将在系统中使用一年。接入点实现EIS和LPR感知。提取的LPR值预测饮用水中的腐蚀速率为63.0 um/年。
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引用次数: 1
Conceptual Development of an Autonomous Underwater Robot Design for Monitoring and Harvesting Invasive Weeds 自主水下杂草监测与收获机器人的概念发展
Pub Date : 2021-09-13 DOI: 10.1109/africon51333.2021.9570971
D. Modungwa, F. Mekuria, Mzuziwezulu Kekana
The design of a biomimicry autonomous underwater robot for monitoring and harvesting invasive weeds in lakes is presented in this paper. The systematic design of the robot focuses on integrating 5G-AI-IoT as effective technological tools to autonomously monitor and harvest invasive weeds in order to replace traditional weed control approaches. The robustness and versatility of the robotic platform to structural topology and autonomous navigation that uses convolutional neural network methods and unsupervised learning techniques will be demonstrated. The robotic concept design will investigate real time sensing, mapping and visualization of the invasive weeds. The system based on real-time mapping information obtained from the swarm of drones will also manage the control of the underwater robots equipped with smart networked sensors using State of the Art IoT technologies. The mechanical dislodging machine will be guided to the mapped areas and accurately controlled and guided through smart sensors via the 5G Ultra-reliable Low-Latency Communication Control (URLLC) and tactile control system to dislodge the invasive weed with no impact on other organisms and the biodiversity of the lake.
介绍了一种用于湖泊入侵杂草监测和采集的仿生自主水下机器人的设计。机器人的系统设计侧重于整合5G-AI-IoT作为有效的技术工具,自主监测和收获入侵杂草,以取代传统的杂草控制方法。将展示机器人平台对结构拓扑和自主导航的鲁棒性和多功能性,该平台使用卷积神经网络方法和无监督学习技术。机器人概念设计将研究入侵杂草的实时传感、制图和可视化。该系统基于从无人机群中获得的实时地图信息,还将使用最先进的物联网技术管理配备智能网络传感器的水下机器人的控制。通过5G超可靠低延迟通信控制(URLLC)和触觉控制系统,将机械移出机引导到地图区域,通过智能传感器进行精确控制和引导,在不影响其他生物和湖泊生物多样性的情况下移出入侵杂草。
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引用次数: 2
[AFRICON 2021 Front cover] [AFRICON 2021封面]
Pub Date : 2021-09-13 DOI: 10.1109/africon51333.2021.9570903
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引用次数: 0
Arbitrary Alloy Semiconductor Material Based DG MOSFET for High-Frequency Industrial and Hybrid Consumer Applications 用于高频工业和混合消费应用的基于任意合金半导体材料的DG MOSFET
Pub Date : 2021-09-13 DOI: 10.1109/africon51333.2021.9570845
Naveenbalaji Gowthaman, V. Srivastava
The performance of the transistors is a measure for the system to perform desired output. The research in the development of transistors is continuously growing and defines an efficient system and device modeling. This work shows a comparative analysis of the various materials in the double-gate (DG) MOSFET. Here, the DG MOSFETs have been constructed using high-ƙ dielectrics to reduce the short channel effects and improve the performance of the transistors, which is the unit cell of the industrial and consumer electronics devices. This MOSFET can further be optimized by enhancing the analog characteristics in the nanometer regime. This work focuses on the performance of the DG MOSFETs by considering channels like Indium Arsenide (InAs) and Indium Phosphide (InP) in the Aluminium Gallium Arsenide (AlxGa1-xAs) and Gallium Arsenide Antimonide (GaAs1-xSbx) substrates. From the simulation and tabulations, it is evident that the properties of the DG MOSFETs with these novel materials change drastically, thereby inferring the optimum materials in MOSFETs for the high speed and long haul RF applications. In this work, three different models have been proposed, namely AlxGa1-xAs/HfO2, AlxGa1-xAs/La2O3, and GaAs1-xSbx/La2O3; which shows improvement in threshold voltage with 1.16%, 1.20%, and 1.64% respectively when compared to the conventional Silicon-based DG MOSFETs.
晶体管的性能是衡量系统实现期望输出的标准。对晶体管发展的研究不断发展,并定义了一个高效的系统和器件建模。这项工作展示了双栅(DG) MOSFET中各种材料的比较分析。在这里,DG mosfet使用高- 介电体来构建,以减少短通道效应并提高晶体管的性能,这是工业和消费电子设备的单元单元。该MOSFET可以通过在纳米范围内增强模拟特性来进一步优化。本研究通过考虑砷化镓铝(AlxGa1-xAs)和砷化镓锑(GaAs1-xSbx)衬底中的砷化铟(InAs)和磷化铟(InP)通道,重点研究了DG mosfet的性能。从模拟和表格中可以明显看出,使用这些新材料的DG mosfet的性能发生了巨大变化,从而推断出用于高速和长距离射频应用的mosfet的最佳材料。在这项工作中,提出了三种不同的模型,即AlxGa1-xAs/HfO2, AlxGa1-xAs/La2O3和GaAs1-xSbx/La2O3;与传统硅基DG mosfet相比,阈值电压分别提高了1.16%、1.20%和1.64%。
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引用次数: 4
Focusing Benford’s Law on the Daily Covid-19 Cases Numbers and Daily Covid-19 Deaths Numbers 将本福德定律重点放在每日新冠肺炎病例数和每日新冠肺炎死亡人数上
Pub Date : 2021-09-13 DOI: 10.1109/africon51333.2021.9570989
L. Butgereit
Benford’s Law has been used to attempt to determine if a list of numbers has been artificially manipulated in any way. Benford’s Law is applicable to many types of lists of numbers and is often used in the accounting domain to flag possible fraud. This paper provides a history of Benford’s Law and presents a number of examples where Benford’s Law applies in the domain of geography, transportation, and economics. The goal of this research, however, is to focus Benford’s Law on the list of numbers representing daily Covid-19 cases and daily Covid-19 deaths. The lists of numbers were analysed with respect to Benford’s Law and graphs were produced comparing the Covid-19 numbers against what was predicted by Benford’s Law. The conclusion of this paper is that at a country level or at a specific date level, the datasets do not have the proper characteristics and Benford’s Law can not be used on those datasets. At a continent level, however, the datasets are much larger and wide ranging. Benford’s Law can be applied to continental datasets.
本福德定律被用来判断一串数字是否被人为操纵过。本福德定律适用于许多类型的数字列表,并经常在会计领域用于标记可能的欺诈行为。本文提供了本福德定律的历史,并提出了本福德定律在地理、交通和经济领域应用的一些例子。然而,这项研究的目标是将本福德定律集中在代表每日Covid-19病例和每日Covid-19死亡人数的数字列表上。根据本福德定律分析了数字列表,并制作了将Covid-19数字与本福德定律预测的数字进行比较的图表。本文的结论是,在国家层面或特定日期层面上,数据集不具有适当的特征,本福德定律不能用于这些数据集。然而,在大陆层面上,数据集要大得多,范围也广得多。本福德定律可以应用于大陆数据集。
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引用次数: 1
Strategic Considerations of Industry 4.0 on Electronic Warfare using Technology Roadmaps 利用技术路线图对工业4.0电子战的战略考虑
Pub Date : 2021-09-13 DOI: 10.1109/africon51333.2021.9570921
Reeshen Reddy
The Fourth Industrial Revolution or Industry 4.0 is an ongoing industrial revolution brought about by several emerging technologies expected to disrupt most business sectors. The effect of Industry 4.0 on the Electronic Warfare (EW) sector is strategically analyzed using Technology Road Mapping (TRM). An enhanced TRM is proposed based on the fast-start TRM method that incorporates an additional military capability layer to assess the linkage between market trends and products. The enhanced TRM is applied to analyze trends, capability, product, technology, research, and resources.The TRM-based strategic analysis reveals that Industry 4.0 will create both market pull and technology push driving the required characteristics of future EW Products. The market pull effects will drive future EW products to operate in a battlespace supporting Multi-Domain Operations (MDO) and Decision Centric Warfare (DCW). Industry 4.0 will drive commercial demand for spectrum resulting in contested, congested, and shared spectrum. Advances in smart industries will facilitate prototype warfare and the Internet of Military Things (IoMT), increasing ad-hoc bespoke non-traditional threats. Traditional threats will support DCW supported by several unmanned platform concepts.Technology push effects will advance key technologies that will shape future EW products such as Artificial Intelligence (A.I), Cyber-Physical Systems (CPS), Internet of Things (IoT), and Heterogeneous Processing. Finally, we conclude that the emergent properties of future EW products will be cognitive, distributed, networked, coordinated, multi-spectral, reduced size, weight, and power (SWAP), and modular using open architectures.
第四次工业革命或工业4.0是一场正在进行的工业革命,由几种新兴技术带来,预计将颠覆大多数商业领域。利用技术路线图(TRM)对工业4.0对电子战(EW)领域的影响进行了战略分析。在快速启动TRM方法的基础上,提出了一种增强的TRM方法,该方法结合了额外的军事能力层来评估市场趋势与产品之间的联系。增强的TRM用于分析趋势、能力、产品、技术、研究和资源。基于trm的战略分析表明,工业4.0将创造市场拉动和技术推动,推动未来电子战产品所需的特性。市场拉动效应将推动未来电子战产品在支持多域作战(MDO)和决策中心战(DCW)的作战空间中运行。工业4.0将推动对频谱的商业需求,从而导致频谱的竞争、拥塞和共享。智能工业的进步将促进原型战争和军事物联网(IoMT),增加临时定制的非传统威胁。传统威胁将支持DCW,由几个无人平台概念支持。技术推动效应将推动关键技术的发展,这些技术将塑造未来的电子战产品,如人工智能(A.I)、网络物理系统(CPS)、物联网(IoT)和异构处理。最后,我们得出结论,未来电子战产品的新兴特性将是认知、分布式、网络化、协调、多光谱、小型化、轻量化和低功耗(SWAP),以及采用开放式架构的模块化。
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引用次数: 1
期刊
2021 IEEE AFRICON
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