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2019 Conference on Information Communications Technology and Society (ICTAS)最新文献

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Comparison of students using electronic learning website of University of South Africa 学生使用南非大学电子学习网站的比较
Pub Date : 2019-03-01 DOI: 10.1109/ICTAS.2019.8703622
Motlhabane Jacobus Maboe, M. Eloff, M. Schoeman
It is currently almost impossible for students enrolled at an open distance learning institution to obtain their study materials, communicate with lecturers or engage in any other teaching and learning processes without the use of computers and the Internet. This paper investigates and reports on the time taken and level of difficulty experienced by students with disabilities and students without disabilities in completing a number of set tasks involving the main website and the learning management system (LMS) of the University of South Africa (Unisa). The findings of the study indicate that students with disabilities take considerably longer than students without disabilities to finish such tasks, and in some cases experience greater difficulty in doing so. The study determined the importance of well-developed e-learning platforms at this institution for ensuring efficient and effective use by both students with and students without disabilities. The study indicates the advisability of including all LMS stakeholders, particularly the users of the LMS, in the development of e-learning websites in order to ensure that accessibility and usability design principles, guidelines and standards are properly adhered to so as to reduce both digital and social divides and the marginalisation of students. This becomes even more significant when the target user groups are students with disabilities.
目前,在开放远程学习机构注册的学生几乎不可能在没有使用计算机和互联网的情况下获得学习材料,与讲师交流或从事任何其他教学过程。本文调查和报告了残疾学生和非残疾学生在完成涉及南非大学(Unisa)的主要网站和学习管理系统(LMS)的一些既定任务时所花费的时间和困难程度。研究结果表明,有残疾的学生比没有残疾的学生花更长的时间来完成这些任务,在某些情况下,这样做会遇到更大的困难。该研究确定了该机构完善的电子学习平台对于确保残疾学生和非残疾学生高效使用的重要性。该研究指出,在电子学习网站的发展过程中,包括所有LMS利益相关者,特别是LMS的用户,是明智的,以确保无障碍和可用性设计原则、指导方针和标准得到适当遵守,从而减少数字和社会鸿沟,以及学生的边缘化。当目标用户群体是残疾学生时,这一点变得更加重要。
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引用次数: 4
Efficient Region of Interest Detection for Liver Segmentation using 3D CT Scans 基于三维CT扫描的高效兴趣区域检测肝脏分割
Pub Date : 2019-03-01 DOI: 10.1109/ICTAS.2019.8703625
Anura Hiraman, Serestina Viriri, M. V. Gwetu
Deep learning has become a methodology of choice in medical imaging; one of the applications being classification tasks. The research presented in this paper aims to obtain a region of interest for liver segmentation with the aid of a convolutional neural network to classify 2D slices of a 3D CT volume. This is done by classification of slices to detect slices containing the pelvis and chest so that they can be removed while maintaining the abdomen within which the liver occurs. The presented approach is evaluated on the Medical Image Computing and Computer Assisted Intervention (MICCAI) 2007 grand challenge datasets and the evaluation metrics used are accuracy, recall and precision. The presented approach proved to perform well and the classification models achieved an accuracy rate of 0.99 for pelvis slice classification and 0.97 for chest slice classification.
深度学习已经成为医学成像的首选方法;其中一个应用是分类任务。本文的研究旨在借助卷积神经网络对三维CT体的二维切片进行分类,从而获得肝脏分割的兴趣区域。这是通过切片分类来完成的,以检测包含骨盆和胸部的切片,以便在保留肝脏所在的腹部的同时将其移除。在医学图像计算和计算机辅助干预(MICCAI) 2007大挑战数据集上对该方法进行了评估,使用的评估指标是准确率、召回率和精密度。该方法取得了较好的效果,骨盆切片分类准确率为0.99,胸片分类准确率为0.97。
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引用次数: 4
Adoption of an Integrated Cloud-Based Electronic Medical Record System at Public Healthcare Facilities in Free-State, South Africa 南非自由州公共医疗机构采用综合云电子医疗记录系统
Pub Date : 2019-03-01 DOI: 10.1109/ICTAS.2019.8703606
Nomabhongo Masana, G. M. Muriithi
Access to a patient's medical history at the right time can significantly improve the ability of health practitioners to render effective healthcare services. Health facilities in developing countries often lack this capability due to reliance on manual records. The emerging cloud computing model offers an opportunity to cost-effectively share and exchange selected patient records among healthcare facilities. However, the extent to which Free State public healthcare facilities are willing to embrace a shared cloud platform is unclear. This study investigated this issue using a cross-sectional survey involving thirty-one public healthcare facilities spread across five administrative districts of the Free State Province, South Africa. Results showed that most public healthcare facilities still utilize paper-based systems with some form of IT to record basic patient details. Results also revealed that relative advantage, security concern, top management support and organization readiness are the most significant factors that could influence the decision to adopt.
在适当的时间访问患者的病史可以显著提高健康从业人员提供有效医疗保健服务的能力。由于依赖手工记录,发展中国家的卫生设施往往缺乏这种能力。新兴的云计算模型提供了在医疗机构之间经济高效地共享和交换选定患者记录的机会。然而,自由邦公共医疗机构愿意在多大程度上采用共享云平台尚不清楚。本研究对这一问题进行了横断面调查,涉及南非自由邦省五个行政区的31家公共医疗机构。结果显示,大多数公共医疗机构仍然使用基于纸张的系统和某种形式的IT来记录患者的基本详细信息。结果还显示,相对优势、安全考虑、最高管理层支持和组织准备程度是可能影响采用决策的最重要因素。
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引用次数: 3
Using Machine Learning to Prioritize Automated Testing in an Agile Environment 在敏捷环境中使用机器学习确定自动化测试的优先级
Pub Date : 2019-03-01 DOI: 10.1109/ICTAS.2019.8703639
L. Butgereit
Automated software testing is an integral part of most Agile methodologies. In the case of the Scrum Agile methodology, the definition of done includes the completion of tests. As a software project matures, however, the number of tests increases to such a point that the time required to run all the tests often hinders the speed in which artifacts can be deployed. This paper describes a technique of using machine learning to help prioritize automated testing to ensure that tests which have a higher probability of failing are executed early in the test run giving the programmers an early indication of problems. In order to do this, various metrics are collected about the software under test including Cyclomatic values, Halstead-based values, and Chidamber-Kemere values. In addition, the historical commit messages from the source code control system is accessed to see if there had been defects in the various source classes previously. From these two inputs, a data file can be created which contains various metrics and whether or not there had been defects in these source files previously. This data file can then be sent to Weka to create a decision tree indicating which measurements indicate potential defects. The model created by Weka can then then be used in future to attempt to predict where defects might be in the source files and then prioritize testing appropriately.
自动化软件测试是大多数敏捷方法的一个组成部分。在Scrum敏捷方法中,完成的定义包括测试的完成。然而,随着软件项目的成熟,测试的数量会增加到运行所有测试所需的时间通常会阻碍工件部署的速度。本文描述了一种使用机器学习来帮助自动测试确定优先级的技术,以确保在测试运行的早期执行失败概率较高的测试,从而使程序员能够及早发现问题。为了做到这一点,收集关于被测软件的各种度量,包括Cyclomatic值、基于halstead的值和Chidamber-Kemere值。此外,还可以访问来自源代码控制系统的历史提交消息,以查看以前各种源类中是否存在缺陷。从这两个输入中,可以创建一个数据文件,其中包含各种度量,以及这些源文件以前是否存在缺陷。然后可以将该数据文件发送到Weka,以创建一个决策树,指示哪些度量表明了潜在的缺陷。Weka创建的模型可以在将来用于尝试预测源文件中可能存在缺陷的位置,然后适当地确定测试的优先级。
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引用次数: 7
Multi-hop PSO based routing protocol for Wireless Sensor Networks with Energy Harvesting 基于多跳PSO的能量收集无线传感器网络路由协议
Pub Date : 2019-03-01 DOI: 10.1109/ICTAS.2019.8703638
Tlholiso W. Tukisi, T. Mathaba, M. Odhiambo
In this paper, three energy efficient routing strategies for a design of a Particle Swarm Optimization based Wireless Sensor Network (WSN) routing algorithm are presented. The first strategy maximizes the energy of the node with the lowest energy (the worst performing node) in the WSN, the second strategy maximizes the overall WSN energy and the third strategy maximizes the energy of the worst performing node while improving network latency. The best of these strategies is further tested in a WSN with energy harvesting nodes. The results are compared with a benchmark variant of the Low energy adaptive clustering hierarchy (LEACH) protocol, called the LEACH-Centralized Sleeping (CS). The results show that the strategy that maximizes the overall network energy can improve the network lifetime better. The results further show that the energy harvesting aware routing protocol can extend the lifetime of a WSN more than a protocol that is not energy harvesting aware.
针对基于粒子群优化的无线传感器网络路由算法,提出了三种节能路由策略。第一种策略是最大限度地利用WSN中能量最低的节点(性能最差的节点)的能量,第二种策略是最大限度地利用整个WSN的能量,第三种策略是最大限度地利用性能最差的节点的能量,同时提高网络延迟。在具有能量收集节点的WSN中进一步测试了这些策略中的最佳策略。将结果与低能量自适应聚类层次(LEACH)协议的基准变体LEACH- centralized sleep (CS)进行比较。结果表明,使网络总能量最大化的策略能更好地提高网络生存期。结果进一步表明,能量收集感知路由协议比不能量收集感知路由协议更能延长无线传感器网络的生命周期。
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引用次数: 13
Copyright 版权
Pub Date : 2019-03-01 DOI: 10.1109/ictas.2019.8703517
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引用次数: 0
A Smart Home Appliance Control System for Physically Disabled People 残疾人智能家电控制系统
Pub Date : 2019-03-01 DOI: 10.1109/ICTAS.2019.8703637
Progress Mtshali, F. Khubisa
The construction and conversion of ordinary homes into “smart homes” has seen a tremendous rise in recent years. This can be ascribed to technologies such as the Internet of Things, sensors, smart phones, smart appliances, cloud computing, and digital assistants such as Amazon Alexa, Google Home, Google Assistant, Apple Siri, and Microsoft Cortana. At the outset, smart homes were built to enhance the quality of life for ordinary nondisabled persons. Impressively, we have seen smart home residents reaping the benefits of security, energy saving, and the ability to control their lighting, HVAC (heating, ventilation, and air conditioning), door locks, and coffee makers while they are in their space of comfort, for example in bed or siting on a couch. However, most smart home devices are not designed with people with disabilities and limited range of movement in mind. Of course, being able to control home devices using smart technology could be a tremendous benefit to people with physical disabilities and the older persons. This paper presents a system that uses smart plugs, smart cameras, smart power strips and a digital assistant such as Amazon Alexa, Google Home, Google Assistant, Apple Siri, or Microsoft Cortana to capture voice commands, from a person with physical disabilities, spoken in a much more natural way to control ordinary home electrical appliances in order to turn them on or off, with minimal exertion.
近年来,普通家庭的建设和“智能家居”的改造出现了巨大的增长。这可以归因于物联网、传感器、智能手机、智能家电、云计算以及亚马逊Alexa、谷歌Home、谷歌助理、苹果Siri和微软Cortana等数字助理等技术。一开始,智能家居的建设是为了提高普通非残疾人的生活质量。令人印象深刻的是,我们已经看到智能家居的居民在舒适的空间(例如床上或沙发上)获得了安全、节能的好处,并且能够控制他们的照明、暖通空调(暖通空调)、门锁和咖啡机。然而,大多数智能家居设备在设计时并没有考虑到残疾人和活动范围有限的人。当然,能够使用智能技术控制家庭设备对身体残疾的人和老年人来说可能是一个巨大的好处。本文介绍了一个系统,该系统使用智能插头、智能摄像头、智能电源板和数字助手(如亚马逊Alexa、谷歌Home、谷歌助手、苹果Siri或微软Cortana)来捕捉身体残疾人士的语音命令,以一种更自然的方式来控制普通家用电器,以最小的努力打开或关闭它们。
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引用次数: 68
The potential use of Tablet Computers to support Teaching and Learning activities in South African Schools 平板电脑在南非学校支持教学活动的潜在用途
Pub Date : 2019-03-01 DOI: 10.1109/ICTAS.2019.8703614
Kristen Theunissen, Ingrid Siebörger
In South Africa, currently, “education is in crisis” and there is much speculation that Information Communication Technologies (ICTs) could be used to improve education in developing countries, such as South Africa. One ICT often cited for its benefits to education is that of the Tablet computer (PC). In this paper we explore the affordances of tablet PCs, as well as the factors which positively contribute to the uptake of tablet PCs within educational settings. Furthermore, we discuss the importance of educator knowledge through the lens of Technological Pedagogical Content Knowledge (TPACK) in successfully integrating the use of technology into teaching and learning; research tells us that there can only be meaningful and skilled teaching with technology if pedagogical knowledge, content knowledge and technological knowledge are well defined. As Toyama said, “there are no technology shortcuts to good education”.
目前在南非,“教育正处于危机之中”,许多人猜测资讯通讯科技(ict)可以用来改善南非等发展中国家的教育。人们经常提到的信息通信技术对教育的好处之一是平板电脑(PC)。在本文中,我们探讨了平板电脑的功能,以及积极促进平板电脑在教育环境中的吸收的因素。此外,我们通过技术教学内容知识(TPACK)的视角讨论了教育者知识在成功地将技术应用融入教与学中的重要性;研究告诉我们,只有明确了教学知识、内容知识和技术知识,才能有意义和熟练的技术教学。正如富山所言,“良好的教育没有技术捷径”。
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引用次数: 0
A Smart Home Energy Management System using Smart Plugs 使用智能插头的智能家居能源管理系统
Pub Date : 2019-03-01 DOI: 10.1109/ICTAS.2019.8703522
Progress Mtshali, Freedom Khubia
The construction and conversion of ordinary homes into “smart homes” has seen a tremendous rise in recent years. This can be attributed to technologies such as the Internet of Things and smart devices that are capable to collecting pertinent information for the purpose of optimizing home energy consumption and cost reduction. Smart homes are considerably expensive. An ordinary home may implement some of the smart technologies without breaking the bank and at the same time, improve their quality of life to some extent. Smart plugs are at the center of enabling an ordinary home into a somewhat smart home because smart plugs are able to provide enough energy consumption information for the development and deployment of systems to manage the energy consumption. The purpose of this paper is to introduce SHEMS, a smart home energy management system that is designed and implemented using off the shelf hardware and software.
近年来,普通家庭的建设和“智能家居”的改造出现了巨大的增长。这可以归因于物联网和智能设备等技术,这些技术能够收集相关信息,以优化家庭能源消耗和降低成本。智能家居相当昂贵。一个普通的家庭可以在不超支的情况下实现一些智能技术,同时在一定程度上提高他们的生活质量。智能插头是使普通家庭成为智能家庭的核心,因为智能插头能够为管理能源消耗的系统的开发和部署提供足够的能源消耗信息。本文的目的是介绍一种使用现成的硬件和软件设计和实现的智能家居能源管理系统SHEMS。
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引用次数: 10
Developing a framework towards improving business analysis of integrated public e-service systems 制订框架,以改善综合公共电子服务系统的业务分析
Pub Date : 2019-03-01 DOI: 10.1109/ICTAS.2019.8703612
Shivani Naicker, Alveen Singh
Businesses and governments globally are transforming their operations to capitalize on emerging ICTs for higher quality services. Businesses often evaluate emerging ICTs as a strategic medium to expand their products and services globally at a reasonably lower cost. Recently smart devices and connectivity are within reach for many people. Eservices is a general term for services offered to customers via the internet and other ICTs. Eservices extends to the sector of governance commonly referred to as public eService spread between different municipalities across SA. Development of public eService systems tend to be complex and rife with challenges. Efficient public facing systems require consideration of a wider range of Business Analysis (BA) aspects when compared to more well defined systems used in the private sector. Despite adherence of well accepted tools, methods and standards from the BA domain, challenges still persist. This study proposes a theoretical BA framework specifically to address the unique needs of creating public eService systems. Following a literature review, thematic analysis aided in the discovery of critical components of the proposed BA framework. The themes derived will assist with categorisation which will conceptualise each component and ensemble the framework.
全球企业和政府正在转变业务,利用新兴的信息通信技术提供更高质量的服务。企业往往将新兴的信息通信技术视为一种战略媒介,以较低的成本在全球范围内扩展其产品和服务。最近,智能设备和连接对许多人来说都是触手可及的。“服务”是通过互联网和其他信息通信技术向客户提供的服务的总称。服务扩展到治理部门,通常称为公共服务,分布在SA的不同市政当局之间。公共服务系统的开发往往是复杂的,充满了挑战。与私营部门使用的定义更明确的系统相比,高效的面向公众的系统需要考虑更广泛的业务分析(BA)方面。尽管遵循来自BA领域的广泛接受的工具、方法和标准,挑战仍然存在。本研究提出了一个理论性的BA框架,专门用于解决创建公共服务系统的独特需求。在文献回顾之后,专题分析有助于发现提议的BA框架的关键组成部分。派生的主题将有助于分类,这将使每个组件概念化并集成框架。
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引用次数: 1
期刊
2019 Conference on Information Communications Technology and Society (ICTAS)
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