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2018 International Conference on Intelligent and Innovative Computing Applications (ICONIC)最新文献

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Modeling the Influence of Large-Scale Circulation Patterns on Precipitation in Mauritius 模拟大尺度环流型态对毛里求斯降水的影响
K. Gopal, C. P. Khedun, Anoop Sohun
Mauritius suffers from chronic water shortages that can severely impact its economy and the well-being of its population. Both surface and groundwater availability are determined by rainfall, which is in turn influenced by large-scale circulation patterns such as the El Niño Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD). Here we report on the influence of these two teleconnection patterns and present the result of a simple neural network for precipitation forecasting, based on the state of ENSO and IOD. Data from the Vacaos station, for the period 1961 to 2012 is used. We found statistically significant correlation between average winter rainfall and ENSO and IOD indices. The correlation for summer was negligible. The prediction of summer precipitation was less accurate than that of winter precipitation. The findings from this study can help in more efficient planning and management of water resources on the island.
毛里求斯长期缺水,这可能严重影响其经济和人民的福祉。地表水和地下水的可用性都是由降雨决定的,而降雨又受到厄尔Niño南方涛动(ENSO)和印度洋偶极子(IOD)等大尺度环流模式的影响。本文报道了这两种遥相关模式的影响,并给出了基于ENSO和IOD状态的简单神经网络降水预报结果。本文使用了1961年至2012年Vacaos站的数据。我们发现冬季平均降雨量与ENSO和IOD指数具有显著的统计学相关性。夏季的相关性可以忽略不计。夏季降水的预报精度低于冬季降水。这项研究的结果可以帮助更有效地规划和管理岛上的水资源。
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引用次数: 0
A Framework of Bimodal Biometrics for E-assessment Authentication Systems 电子评估认证系统的双峰生物识别框架
Temitope Oluwafunmilayo Adetunji, T. Zuva, M. Appiah
The global use of the internet has improved the growth of the educational sector over the years, while electronic assessments have turn out to be one of the major tools in the development of both non-academic and academic establishments. The effective assessment of a student is mostly perceived as one of the foremost challenges that is frequently experienced during online examination in that it can be very difficult to provide accurate user authentication. The requirement to secure and authenticate a user during e-assessments owing to the high rate of misconduct has led to the proposal of this research. The purpose is to examine potential threats to student authentication during e-assessments and propose a framework which uses a bi-modal authentication approach to provide successful authentication during e-assessment. In implementing this approach, we propose a framework that provides security to improve e-assessments by introducing authentication classifiers to demonstrate its application in biometrics technologies. The proposed model was evaluated based on set of thresholds using Accuracy, FAR and FRR as performance metrics. the proposed model gave a high accuracy of 94.52%. The single-modal model of keystrokes had percentage accuracy of 92.025% and face had percentage accuracy of 92.58%. This implies that the bimodal model integrating keystrokes and face outperforms the single-modal model of keystrokes and single-modal model of face respectively. The study concludes that the proposed model contributes to existing works on e-assessment systems by integrating keystrokes and face bimodal biometric to optimally minimize fraud and impersonation thereby providing accurate authentication of a user.
多年来,互联网的全球使用促进了教育部门的发展,而电子评估已成为非学术和学术机构发展的主要工具之一。学生的有效评估通常被认为是在线考试中经常遇到的最重要的挑战之一,因为很难提供准确的用户身份验证。由于行为不端率高,在电子评估期间需要保护和认证用户,因此提出了这项研究。目的是检查电子评估期间对学生身份验证的潜在威胁,并提出一个框架,该框架使用双模式身份验证方法在电子评估期间提供成功的身份验证。在实施这种方法时,我们提出了一个框架,该框架通过引入身份验证分类器来展示其在生物识别技术中的应用,从而提供安全性以改进电子评估。采用精度、FAR和FRR作为性能指标,基于一组阈值对所提出的模型进行评估。该模型的准确率高达94.52%。单模态击键模型的准确率为92.025%,人脸模型的准确率为92.58%。这意味着整合击键和面部的双峰模型分别优于击键单峰模型和面部单峰模型。该研究的结论是,所提出的模型有助于现有的电子评估系统工作,通过集成击键和面部双峰生物识别,以最大限度地减少欺诈和冒充,从而提供准确的用户身份验证。
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引用次数: 6
Improving the Energy Efficiency of an Autonomous Power System with Renewable Sources 提高可再生能源自主电力系统的能源效率
I. Zicmane, K. Berzina, T. Lomane, Konstantins Kasperjuks
Creating decentralized energy supply systems, there arises the task of providing consumers with electric energy, the parameters of which satisfy the necessary requirements. This problem is especially acute when developing systems based on non-traditional sources using the mechanical energy of renewable natural resources. Taking into account the probabilistic nature of their changes, as well as the significant interaction with each other, the choice of operating modes, types and parameters of energy storage devices for such systems becomes quite a complex and ambiguous task of innovative technologies. The article is devoted to the solution of the problem of developing technical solutions for conjugation of various renewable energy sources ensuring guaranteed electricity supply to autonomous consumers and increasing the energy efficiency of such a system as a whole.
建立分散的能源供应系统,就产生了向消费者提供参数满足必要要求的电能的任务。在利用可再生自然资源的机械能开发基于非传统能源的系统时,这个问题尤其严重。考虑到它们变化的概率性质,以及彼此之间的重要相互作用,这类系统的运行模式、类型和参数的选择成为一项相当复杂和模糊的创新技术任务。本文致力于解决开发各种可再生能源共轭技术解决方案的问题,确保有保障的电力供应给自主消费者,并提高整个系统的能源效率。
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引用次数: 4
Performance Analysis of Distribution Networks under high Penetration of Photovoltaics in Mauritius 毛里求斯高光伏渗透率下配电网性能分析
Waseem Ahmad Nosimohomed
Traditionally, for a radial low-voltage (LV) distribution network serving residential loads, it was simpler for the electric utility to predict the demand and adjust the generation from power plants accordingly, thus offering a high reliability of supply. However, with the increasing penetration of photovoltaics (PV) on rooftops of residential houses, it has become difficult to ensure the same reliability without the performance of the distribution network being affected. At times of low loads in residential houses, PV systems will inject power upstream of the host LV network and affect the behavior of the distribution network. In this paper, an LV distribution feeder in Mauritius has been modelled on DigSILENT Power Factory software to simulate how the network performance is affected under high PV penetration. Novel indices were developed for analyzing grid behavior in terms of maximum voltage variation from nominal value, average feeder loading, feeder losses, and transformer reserve. These performance indices were evaluated against three different voltage control strategies of PV inverters in order to choose the best one which will optimize the performance of the network. Furthermore, variations in the loads and PV generation over a 24-hour period were also considered in the performance analysis of the grid.
传统上,对于服务于居民负荷的径向低压配电网,电力公司更容易预测需求并相应地调整发电厂的发电量,从而提供高可靠性的供电。然而,随着光伏在住宅屋顶上的普及,在不影响配电网性能的情况下保证相同的可靠性变得越来越困难。在住宅低负荷时,光伏系统将向主机低压电网上游注入电力,影响配电网的行为。本文采用DigSILENT Power Factory软件对毛里求斯的低压配电馈线进行建模,以模拟高光伏渗透率下网络性能的影响。开发了新的指标来分析电网行为的最大电压变化从标称值,平均馈线负荷,馈线损耗和变压器储备。针对三种不同的电压控制策略对这些性能指标进行了评估,以选择最优的电压控制策略来优化电网的性能。此外,在电网性能分析中也考虑了24小时内负荷和光伏发电的变化。
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引用次数: 0
Energy Usage Modelling for Residences of a South African Academic Institution 南非某学术机构住宅能源使用模型
S. Ntsaluba, E. Malatji
In residential buildings, various factors often have a significant impact on a building’s energy consumption. This paper aims to utilize various existing models to evaluate the sensitivity and influence of each of these factors on the building’s energy usage. The factors considered include: average temperature, heating degree days (HDD), cooling degree days (CDD), number of workdays, number of nonworkdays and building occupancy. The models considered were: linear two variable and multivariable regression, exponential regression and polynomial regression. The data used for the modeling was that of the energy usage of all the residences of a South African University, during the 2017 academic year. The results of this study revealed that the models developed using polynomial regression produced coefficient of determination (R2 ) values ranging from 0.7 to 0.89 in the case of temperature and occupancy, and 0.39-0.69 in the case of workdays and non-workdays, which were the highest model accuracies when compared to those of other models. Analysis of the results also revealed that certain factors such as building occupancy had a greater correlation to the building energy usage. The final model developed (A linear multivariable regression model) achieved an R2 value of 0.95 indicating the model’s high accuracy in predicting the dependent variable (energy consumption) using the factors indicated as independent variables to the model.
在住宅建筑中,各种因素往往对建筑的能耗产生重大影响。本文旨在利用各种现有模型来评估这些因素对建筑能源使用的敏感性和影响。考虑的因素包括:平均气温、供暖度日(HDD)、制冷度日(CDD)、工作日数、非工作日数和建筑物占用率。考虑的模型有:线性二变量和多变量回归、指数回归和多项式回归。用于建模的数据是2017学年南非大学所有住宅的能源使用情况。研究结果表明,利用多项式回归建立的模型在温度和占用情况下的决定系数(R2)为0.7 ~ 0.89,在工作日和非工作日情况下的决定系数(R2)为0.39 ~ 0.69,与其他模型相比,模型精度最高。分析结果还表明,建筑占用率等因素与建筑能耗有较大的相关性。最终建立的模型(线性多变量回归模型)的R2值为0.95,表明该模型在预测因变量(能源消耗)时具有较高的准确性,该模型将所指示的因素作为模型的自变量。
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引用次数: 4
Renewable Energy Sources and Grid Integration in Ghana: Issues, Challenges and Solutions 加纳的可再生能源和电网整合:问题、挑战和解决方案
K. Akom, M. Joseph, T. Shongwe
Due to the high cost of fuel and as unfavourable weather conditions which have affected power generation in Ghana, the country has experienced power crises for the past seven years. Renewable Energy Resources (RES) like wind and solar are being considered by many countries as alternatives for the energy requirements of the country. Ghana’s Energy Commission’s (EC) report in October, 2017 indicated that, RE contributes 2MW of power to the country’s energy mix, representing about 1.73% of the total installed capacity. However, the current EC’s energy policy has projected 600MW power through RE in 2030. 340 MW from solar and 260 MW from wind energies. The then Ministry of Energy through the Energy Commission started the rooftop PV programme implementation in early 2016 in some government institutions. The main aim of the rooftop programme was to produce about 200 MW maximum load respite on the national grid as a medium term programme through PV solar technology. However, RE and grid integration has various issues and challenges, large scale RE power generation are mainly connected to the transmission systems and small-scale generation are mostly linked with the distribution system. Direct integration these systems poses a lot of challenges and issues. This paper examines the main issues and proposes some probable solutions for future RE generations and integration.
由于燃料成本高和不利的天气条件影响了加纳的发电,该国在过去七年中经历了电力危机。风能和太阳能等可再生能源正被许多国家视为满足本国能源需求的替代能源。加纳能源委员会(EC) 2017年10月的报告显示,可再生能源为该国的能源结构贡献了2兆瓦的电力,约占总装机容量的1.73%。然而,目前欧盟的能源政策预计到2030年可再生能源的发电量将达到600兆瓦。太阳能340兆瓦,风能260兆瓦。2016年初,当时的能源部通过能源委员会开始在一些政府机构实施屋顶光伏项目。屋顶项目的主要目标是通过光伏太阳能技术在国家电网上产生约200兆瓦的最大负荷。然而,可再生能源与电网的整合存在各种问题和挑战,大规模可再生能源发电主要与输电系统相连,而小规模可再生能源发电大多与配电系统相连。这些系统的直接集成带来了许多挑战和问题。本文探讨了主要问题,并提出了未来可再生能源发电和集成的一些可能的解决方案。
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引用次数: 3
The Factors Influencing Customers to Conduct Online Shopping: South African Perspective 影响顾客进行网上购物的因素:南非的视角
Fhatuwani Vivian Mapande, M. Appiah
E-commerce has many advantages reflected in our life, as it makes the daily life of people convenient. This paper aims to investigate the factors influencing customers to conduct online shopping. The paper used the quantitative approach where questionnaires were used to gather information in the format of a survey. For e-commerce adoption factors, Diffusion of Innovation (DOI) model was used to assess participants’ perspectives when it comes to the adoption of e-commerce. More specifically, the paper proposed the framework for South African customers. The proposed framework was tested on a sample of South African residents. The final sample consisted of 235 respondents. The reliability of the questionnaire was thoroughly examined. Empirical data were analyzed using the linear regression. The results of the research revealed that privacy & security, customer trust, perceived service quality, IT knowledge and Relative advantage are significant factors in influencing customers to adopt e-commerce. On the other hand, privacy was found not to be the statistically significant impact on the adoption of e-commerce.
电子商务有很多优点反映在我们的生活中,因为它使人们的日常生活方便。本文旨在调查影响顾客进行网上购物的因素。本文采用了定量的方法,其中使用问卷调查的形式来收集信息。对于电子商务采用因素,采用创新扩散(DOI)模型来评估参与者对电子商务采用的看法。更具体地说,该文件为南非客户提出了框架。提议的框架在南非居民样本中进行了测试。最终样本包括235名受访者。调查表的可靠性已经过彻底检查。实证数据采用线性回归分析。研究结果显示,隐私与安全、客户信任、感知服务质量、IT知识和相对优势是影响客户采用电子商务的重要因素。另一方面,我们发现隐私对电子商务的采用并没有统计学上的显著影响。
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引用次数: 4
Asymptotic Analysis of A Fuzzy Based Intrusion Detection System For Zigbee 基于模糊的Zigbee入侵检测系统的渐近分析
Tsítso Maphatsoe, M. Masinde
The prospects of achieving a trillion connected internet of things (IoT) devices by 2020 has created the urgency for effective intrusion detection systems (IDS) for these devices. Although it has been argued that the most effective technique used in such systems is anomaly detection, there exist no mechanisms to determine their performance in real-life deployment. In this paper, we report the results of applying asymptotic analysis to evaluate the performance of an anomaly detection algorithm which is designed using logic reasoning through fuzzy logic methodologies. In order to achieve this, the IDS was included as part of intrusion detection software for ZigBee Wireless Sensor Networks (WSNs). In particular, the solution is targeted to address the ZigBee protocol’s vulnerability to flood attacks during node discovery and association to the network. The intrusion detection software is hosted external to the WSNs in pursue of a light solution mindful of resource preservation in sensor nodes.
到2020年,连接的物联网(IoT)设备将达到一万亿,因此迫切需要针对这些设备建立有效的入侵检测系统(IDS)。尽管有人认为,在此类系统中使用的最有效的技术是异常检测,但目前还没有机制来确定它们在实际部署中的性能。在本文中,我们报告了应用渐近分析来评估通过模糊逻辑方法设计的逻辑推理异常检测算法的性能的结果。为了实现这一目标,IDS被包含在ZigBee无线传感器网络(wsn)的入侵检测软件中。特别是,该解决方案旨在解决ZigBee协议在节点发现和与网络关联过程中容易受到洪水攻击的问题。入侵检测软件被托管在传感器网络外部,以追求一种轻量级的解决方案,并考虑到传感器节点的资源保护。
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引用次数: 2
WeChat®: The Present and the Future 微信®:现在与未来
H. Charlotte, Rondelli Solène, Ivan Coste-Manière, Farbos Laura, Malenge Emmanuelle
The purpose of this article is to analyze the power of WeChat and question ourselves on the hypothetical expansion. We discovered WeChat by living in China. For us, it is an application which gather everything. It is Instagram, Facebook, Twitter in just one app. But since we are living in a world with so many differences and different laws, we want to know if this app can really encounter the same success in different countries. WeChat has a big place in the life of Chinese people and this is something which is very interesting. Everything is around this app. The payment method, the social life and the way of interacting with people in general. We decided to split our study in three parts in order to answer the problematic.
本文的目的是分析b微信的力量,并对假设的扩张提出质疑。我们在中国生活时发现了b微信。对我们来说,它是一个收集一切的应用程序。它是Instagram, Facebook, Twitter在一个应用程序中。但由于我们生活在一个有如此多差异和不同法律的世界,我们想知道这个应用程序是否真的可以在不同的国家获得同样的成功。b微信在中国人的生活中占有很大的地位,这是非常有趣的事情。一切都围绕着这款应用。支付方式、社交生活以及与人互动的方式。为了回答这个问题,我们决定把我们的研究分成三个部分。
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引用次数: 1
Development of a Wireless Intelligent Electronic Control System GSM/GPRS Unit Module Configuration for Smart Home Efficient Energy Management System 面向智能家居节能管理系统的无线智能电子控制系统GSM/GPRS单元模块配置的开发
Sepeke B. Kgope, K. Ogudo
The paper proposes a design and prototyping of an intelligent electronic control unit system intended for the implementation of smart home in urban and rural areas, with the intention to control and monitor energy usage by household electrical appliances. Measurement, verification of power usage, and automated efficient use of Solar power as substitute of primary power supply (Eskom power supply) in South Africa in order to reduce the high energy demand on the national grid and create low cost affordable energy to the consumers. The proposed wireless energy management system will incorporate and interface with the distribution Box (D-Box) with intelligent electronic and digital system unit with the purpose to detect presence or absence of primary power (Eskom) integrated together with solar power as alternative power supply to manage available power efficiently for free or at low cost.
本文提出了一种智能电子控制单元系统的设计和原型,旨在实现城乡智能家居,目的是控制和监测家用电器的能源使用情况。测量、验证电力使用情况,并自动有效地使用太阳能作为南非主要电力供应(Eskom电力供应)的替代品,以减少对国家电网的高能源需求,并为消费者创造低成本可负担的能源。拟议的无线能源管理系统将与具有智能电子和数字系统单元的配电箱(D-Box)结合并接口,目的是检测主电源(Eskom)的存在或缺失,并将太阳能作为替代电源集成在一起,以免费或低成本有效地管理可用电力。
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引用次数: 1
期刊
2018 International Conference on Intelligent and Innovative Computing Applications (ICONIC)
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