Research Conference of the South African Institute of Computer Scientists and Information Technologists最新文献_第8页

Better feature acquisition through the use of infrared imaging for human detection systems 更好的特征采集通过使用红外成像人体检测系统

Research Conference of the South African Institute of Computer Scientists and Information Technologists Pub Date : 2017-09-26 DOI: 10.1145/3129416.3129437

Dumisani Kunene, Hima Vadapalli

{"title":"Better feature acquisition through the use of infrared imaging for human detection systems","authors":"Dumisani Kunene, Hima Vadapalli","doi":"10.1145/3129416.3129437","DOIUrl":"https://doi.org/10.1145/3129416.3129437","url":null,"abstract":"Human detection on static images remains a challenging research problem. This work evaluates the significance of using infrared imaging (IIR) over several human detection systems. Larger complexities arise when detecting people in colour images due to the possibility of random colour patterns on the image backgrounds and clothes of pedestrians. In most cases, the colour clutter contributes negatively to image representation methods that solely rely on edge information. The basis of our supposition is that the choice of information has a large impact on the robustness of statistical learning systems. To test this supposition, we created and published a new infrared-based pedestrian dataset called \"SIGNI\" [9].\u0000 Several datasets of the same size were prepared and tested on three different classifiers. The classifiers are first trained with popular colour datasets to determine the optimal parameters that obtain high classification rates on unseen samples. Once satisfactory results are obtained, the same parameters are used for training the classifiers with infrared samples. The conventional use of support vector machines (SVM) on HOG features is tested against extreme learning machines (ELM) and convolutional neural networks (CNN). The results obtained show that the reduction of noise clutter improves the quality of acquired HOG features. As slight performance gains were observed during the classification of infrared samples over the use of visual samples.","PeriodicalId":269578,"journal":{"name":"Research Conference of the South African Institute of Computer Scientists and Information Technologists","volume":"61-62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117262499","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: 2

Challenges to the successful implementation of social media in a South African municipality 南非市政当局成功实施社交媒体的挑战

Research Conference of the South African Institute of Computer Scientists and Information Technologists Pub Date : 2017-09-26 DOI: 10.1145/3129416.3129426

Ifeoluwapo Fashoro, L. Barnard

引用次数: 4

Implementing Open Badges for Recognition of Learning Achievements in South African Organisations 在南非机构推行开放式徽章，以表扬学习成绩

Research Conference of the South African Institute of Computer Scientists and Information Technologists Pub Date : 2016-09-26 DOI: 10.1145/2987491.2987503

R. Crafford, M. Matthee

{"title":"Implementing Open Badges for Recognition of Learning Achievements in South African Organisations","authors":"R. Crafford, M. Matthee","doi":"10.1145/2987491.2987503","DOIUrl":"https://doi.org/10.1145/2987491.2987503","url":null,"abstract":"Open badges, as the new currency of learning, has the potential to motivate learners to participate in granular, evidence-based and portable learning interventions in organisations in support of lifelong learning. However, there is surprisingly little adoption of this new digital recognition scheme in South African corporate training and educational institutions. This paper examines the obstacles that may prevent organisations from using open badges in support of accreditation frameworks like the National Qualifications Framework for micro-credentialing. It also investigates the factors that contribute to the lack of enthusiasm for the Open Badges Framework in South Africa. Data was collected from key role players in the South African learning & development fraternity as well as some international practitioners and learners. Activity theory elements were used to analyse the responses and potential contradictions were identified. It was found that all respondents are in favour of a learning landscape where non-traditional credentials become more valuable and that open badges are appropriate for any learning taking place anywhere and anytime. The main obstacles identified include the lack of understanding the benefits to the South African population at large as well as applicability in organisations and the resulting lack of best practices, lack of resources and resistance to change and the anticipated struggle to obtain management buy-in. However, none of the identified obstacles should be insurmountable and with focused effort and leadership it can be and should be addressed since there is consensus that the education and training industry can greatly benefit from such an implementation.","PeriodicalId":269578,"journal":{"name":"Research Conference of the South African Institute of Computer Scientists and Information Technologists","volume":"4 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114946591","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: 2

A System for a Hand Gesture-Manipulated Virtual Reality Environment 一种手势操纵虚拟现实环境系统

Research Conference of the South African Institute of Computer Scientists and Information Technologists Pub Date : 2016-09-26 DOI: 10.1145/2987491.2987511

A. Clark, Deshendran Moodley

引用次数: 24

Effective Visualization of Tuberculosis Three-Drug Assays: A Design Study 肺结核三药检测的有效可视化:一项设计研究

Research Conference of the South African Institute of Computer Scientists and Information Technologists Pub Date : 2016-09-26 DOI: 10.1145/2987491.2987501

Sunganani Silubonde, D. Warner, M. Kuttel

引用次数: 0

The Impact of Leadership, Trust and Time on Technology Choice by Virtual Teams 领导力、信任和时间对虚拟团队技术选择的影响

Research Conference of the South African Institute of Computer Scientists and Information Technologists Pub Date : 2016-09-26 DOI: 10.1145/2987491.2987510

I. Sanders, Colin Pilkington, Patricia M. Alexander

引用次数: 1

A Natural User Interface to Facilitate Information Sharing Among Mobile Devices in a Co-located Environment 一个自然的用户界面，以促进信息共享的移动设备在一个共同的位置环境

Research Conference of the South African Institute of Computer Scientists and Information Technologists Pub Date : 2016-09-26 DOI: 10.1145/2987491.2987533

Timothy Lee Son, J. Wesson, Dieter Vogts

{"title":"A Natural User Interface to Facilitate Information Sharing Among Mobile Devices in a Co-located Environment","authors":"Timothy Lee Son, J. Wesson, Dieter Vogts","doi":"10.1145/2987491.2987533","DOIUrl":"https://doi.org/10.1145/2987491.2987533","url":null,"abstract":"Existing information sharing methods used by mobile devices require the user to repeat a series of steps to share one or more selected files with another individual. Natural User Interfaces (NUIs) focus on the reuse of existing knowledge to provide a more intuitive solution to existing user interfaces. The aim of this paper is to discuss the design of a NUI application, called MotionShare, to provide a solution to support information sharing among co-located mobile devices. MotionShare does not rely on any additional technologies to assist in positioning of the devices, unlike other existing systems. An example is the use of an external camera to determine the position of devices in an environment.\u0000 MotionShare requires an initial calibration setup to calculate the approximate position and orientation of all the mobile devices in the environment. The approximate position was determined using Bluetooth, which was identified by conducting several experiments. The embedded sensors on mobile devices were used to determine the orientation of these devices. Focus groups were conducted to identify the most appropriate NUI gestures to utilise the position and orientation information. The results of these focus groups and systems selected from literature were compared. Based on this comparison, the most relevant NUI interaction techniques were then implemented to support information sharing among these devices. An analytical evaluation investigated the accuracy of device positioning and gesture recognition, where the results were positive. The empirical evaluation investigated any usability issues. The results of the empirical evaluation showed high levels of user satisfaction and that participants preferred touch gestures to point gestures.","PeriodicalId":269578,"journal":{"name":"Research Conference of the South African Institute of Computer Scientists and Information Technologists","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124240448","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: 2

User Experience of Academic Staff in the Use of a Learning Management System Tool 教职员使用学习管理系统工具的用户体验

Research Conference of the South African Institute of Computer Scientists and Information Technologists Pub Date : 2016-09-26 DOI: 10.1145/2987491.2987514

E. D. Kock, J. V. Biljon, A. Botha

{"title":"User Experience of Academic Staff in the Use of a Learning Management System Tool","authors":"E. D. Kock, J. V. Biljon, A. Botha","doi":"10.1145/2987491.2987514","DOIUrl":"https://doi.org/10.1145/2987491.2987514","url":null,"abstract":"In Open Distance Learning (ODL) institutions the teaching model is moving towards fully integrated information and communication technology applications. To successfully teach or facilitate the use of technology, academics need to have a strong comfort level with the use of technology tools. The academic staff are qualified and experienced subject matter experts but this does not translate to having the necessary technical competencies to do online teaching. They consequently could experience feelings of incompetency to facilitate courseware on a technology platform.\u0000 The objective of this paper is to identify the factors that influence the user experience when using a Learning management system (LMS) in an academic institution. The research design comprises a convergent, parallel design mixed-method case study. A literature review was conducted to abstract the factors that influence the user experience into a conceptual framework. An expert review was conducted to evaluate the conceptual framework and then a questionnaire-driven survey was performed. The quantitative responses were analysed and the results revealed that eight of the nine factors proposed in the conceptual framework do have an influence on the perceived user experience of the academic when using the LMS. The scope of this paper is the analysis and presentation of the quantitative results of the study.\u0000 The contribution of this paper is to present a framework of the factors that influence the user experience of the academic when using a LMS and to improve our understanding of the experience of the academic and the practical challenges involved for academics that have to facilitate learning in an online environment. The findings should be of interest to developers of LMSs and to institutions in support and training of academics that have to use the LMS.","PeriodicalId":269578,"journal":{"name":"Research Conference of the South African Institute of Computer Scientists and Information Technologists","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123333789","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: 8

Can I Have Your Attention, Please?: An Empirical Investigation of Media Multitasking during University Lectures 请大家注意一下好吗?大学讲座中媒介多任务处理的实证研究

Research Conference of the South African Institute of Computer Scientists and Information Technologists Pub Date : 2016-09-26 DOI: 10.1145/2987491.2987498

J. Leysens, D. Roux, D. Parry

{"title":"Can I Have Your Attention, Please?: An Empirical Investigation of Media Multitasking during University Lectures","authors":"J. Leysens, D. Roux, D. Parry","doi":"10.1145/2987491.2987498","DOIUrl":"https://doi.org/10.1145/2987491.2987498","url":null,"abstract":"The growing prevalence of continuous media use among university students in lecture environments has potential for detrimental effects. In this study the focus is placed upon the implications of digital media multitasking in a university lecture context for academic performance and learning. Previous studies reveal that students frequently engage with digital media whilst in a university lecture. Moreover, research has shown that multitasking imposes a cognitive cost, detrimental to learning and task execution. We propose, accordingly, that the constant distractions created by digital media interrupt the thought and communication processes of students and, subsequently, obstruct their ability to learn. To test this proposition we conduct a survey-based empirical investigation of digital media use and academic performance among undergraduate university students. A clear negative correlation was shown between frequency of media use and academic performance. This result confirms the hypothesis that there exists a negative correlation between digital media use during lectures and academic performance. The confirmation of this negative relationship suggests that media use poses a significant distraction to students.","PeriodicalId":269578,"journal":{"name":"Research Conference of the South African Institute of Computer Scientists and Information Technologists","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122541191","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: 13

Synchronized Agile 同步的敏捷

Research Conference of the South African Institute of Computer Scientists and Information Technologists Pub Date : 2016-09-26 DOI: 10.1145/2987491.2987517

V. Sithole, F. Solms

引用次数: 6