South African Computer Journal最新文献_第2页

Traffic control centre optimisation on South African freight corridors through intelligent weigh-in-motion 通过智能称重优化南非货运走廊的交通控制中心

South African Computer Journal Pub Date : 2023-07-31 DOI: 10.18489/sacj.v35i1.961

Arno De Coning, A. Hoffman, Francois Mouton

{"title":"Traffic control centre optimisation on South African freight corridors through intelligent weigh-in-motion","authors":"Arno De Coning, A. Hoffman, Francois Mouton","doi":"10.18489/sacj.v35i1.961","DOIUrl":"https://doi.org/10.18489/sacj.v35i1.961","url":null,"abstract":"High quality road infrastructure is essential to support economic growth for any region. For South Africa’s landlocked economic hub 79% of goods are transported using roads infrastructure. Protection of the road infrastructure is implemented by means of overload control monitoring at traffic control centres (TCCs) on freight corridors. Statistics collected from TCC operations indicate that 75% to 85% of statically weighed vehicles are legally loaded, with the implication that unnecessary time was wasted for these vehicles. This paper therefore proposes an algorithm, called the intelligent weigh-in-motion (IWIM) algorithm, with the purpose to decrease static weighing of vehicles by implementing data sharing between TCCs on the freight corridor, combined with intelligent interpretation of this data. The selected algorithm was chosen after testing multiple artificial intelligence (AI) models (logistic regression, random forest tree, and artificial neural network) to achieve the best performance to decrease static weighing of vehicles while not increasing the number of overloaded vehicles allowed to proceed on the corridor. The best performing model to differentiate between overloaded and legal vehicles, random forest tree, achieved an average improvement of 65,83% in terms of vehicles to be statically weighed when compared to the current rule-based system employed at TCCs.","PeriodicalId":55859,"journal":{"name":"South African Computer Journal","volume":"44 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41285835","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: 0

Ontology-driven development of dialogue systems 本体论驱动的对话系统开发

South African Computer Journal Pub Date : 2023-07-31 DOI: 10.18489/sacj.v35i1.1233

Anna Litvin, O. Palagin, Vladislav Kaverinsky, K. Malakhov

{"title":"Ontology-driven development of dialogue systems","authors":"Anna Litvin, O. Palagin, Vladislav Kaverinsky, K. Malakhov","doi":"10.18489/sacj.v35i1.1233","DOIUrl":"https://doi.org/10.18489/sacj.v35i1.1233","url":null,"abstract":"A new technique and its software implementation are presented to create a deeply semantically structured ontology using plain natural language text as input, without regular structure or any previous tagging and markup. The new approach is primarily aimed at highly inflectional languages, and is implemented for Ukrainian. The automatically created ontologies (in OWL) could be easily converted to other graph databases formats, such as Neo4j, and were successfully evaluated as valid ontologies using Protégé, RDFlib and Neo4j environments. An integrated approach is proposed for the development of natural language dialogue systems driven by the ontologyrelated graph database using the Cypher language for the formal queries. The original phrases are subject to a special method of semantic analysis, which determines the type of formal query to the database. The essence of the analysis is that the text of the user’s phrase goes through a series of checks. Based on their results, a set of basic templates for the formal requests are determined, as well as additional constructions that are attached to the basic template. Some of the checks may also return the notion of substitution to certain specified positions of the formal query. Formal queries can return both contexts and lists of ontology concepts. In addition to concepts, queries can also return information about specific semantic predicates that connect them, which simplifies the synthesis of natural language responses. The synthesis of answers is based on special templates, the choice of which is directly related to the corresponding template of the formal query.","PeriodicalId":55859,"journal":{"name":"South African Computer Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42038312","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: 0

Digitisation of higher education and research: Raising inclusivity and equity issues for indigenous students 高等教育和研究的数字化:提高土著学生的包容性和公平性问题

South African Computer Journal Pub Date : 2023-07-31 DOI: 10.18489/sacj.v35i1.1107

M. Gumbo

引用次数: 1

Namibia's first high performance computer 纳米比亚第一台高性能计算机

South African Computer Journal Pub Date : 2023-07-31 DOI: 10.18489/sacj.v35i1.1189

J. Shapopi, Anton Limbo, M. Backes

引用次数: 0

English first additional language learning and teaching with digital resources 利用数字资源进行英语第一外语学习与教学

South African Computer Journal Pub Date : 2023-07-31 DOI: 10.18489/sacj.v35i1.1109

Nonhlanhla Shandu-Omukunyi

{"title":"English first additional language learning and teaching with digital resources","authors":"Nonhlanhla Shandu-Omukunyi","doi":"10.18489/sacj.v35i1.1109","DOIUrl":"https://doi.org/10.18489/sacj.v35i1.1109","url":null,"abstract":"This paper investigates the learning and teaching of English as a first additional Language (EFAL) using digital resources. It was a qualitative study conducted in a Grade 10 township classroom in the Western Cape, South Africa. Data were collected through observation of a traditional classroom, a computer laboratory and a media room. In addition, using semi-structured interviews, an EFAL teacher, the head of department for languages and the school principal, were interviewed. The research aimed to understand whether the pedagogical digital literacy practices and the use of digital resources enhance the learning of EFAL. In South Africa, English is the language of learning and teaching (LoLT) for the majority of learners that are non-English speakers. Through the lens of computer assisted language learning (CALL) theory and Technological Pedagogical Content Knowledge (TPACK), this article argues that the integration of technology helps teachers to deliver the EFAL content in a flexible and enhanced way. The findings reveal that teachers who teach in impoverished backgrounds and in other languages need to be equipped with digital literacy skills. These skills will address the challenges of literacy currently faced by the country. In conclusion, the amalgamation of an e-education policy with the ...","PeriodicalId":55859,"journal":{"name":"South African Computer Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44051418","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: 0

Integrating technology in teaching and learning practices: students’ competencies 将技术融入教学实践：学生的能力

South African Computer Journal Pub Date : 2023-07-31 DOI: 10.18489/sacj.v35i1.1111

Samuel T. Faloye, Victor Faniran

引用次数: 0

Obituary - Prof Barry Dwolatzky 讣告- Barry Dwolatzky教授

South African Computer Journal Pub Date : 2023-07-31 DOI: 10.18489/sacj.v35i1.1259

E. Trengove

引用次数: 0

Digital transformation and post-Covid-19 education in South Africa: a review of literature 南非的数字化转型和covid -19后教育:文献综述

South African Computer Journal Pub Date : 2023-07-31 DOI: 10.18489/sacj.v35i1.1101

Silence Chomunorwa, Emely S Mashonganyika, Andrew Marevesa

{"title":"Digital transformation and post-Covid-19 education in South Africa: a review of literature","authors":"Silence Chomunorwa, Emely S Mashonganyika, Andrew Marevesa","doi":"10.18489/sacj.v35i1.1101","DOIUrl":"https://doi.org/10.18489/sacj.v35i1.1101","url":null,"abstract":"Little thought or speculation was given to the possibilities of digital transformation for basic education until the global Covid-19 pandemic acted as a catalyst for digital transformation in education. Given the global trends toward digital transformation of teaching and learning, the South African basic education system has not been spared. While South African education policy was put in place to drive digital transformation, challenges persist in its implementation. The aim of this study was to examine the challenges facing the South African basic education system in digital transformation and assess the strategies that can be used to mitigate these challenges. Although South Africa is attempting to address existing inequalities and the digital divide stemming from apartheid policies, the inequalities of the post-apartheid era have continued and worsened during the pandemic, resulting in a multi-layered digital divide that hinders quality and inclusive education. We adopted a narrative literature review in this study, focusing on previous studies that focused on ICT adoption, digital transformation, and inequality challenges in the South African education system. The findings make apparent the impact of the digital divide and former policies in perpetuating educational inequality. From the literature, strategies to mitigate the challenges are highlighted, including consultations.","PeriodicalId":55859,"journal":{"name":"South African Computer Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45969342","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: 1

Grade 9 teachers’ experience of digital technologies in the classroom 九年级教师在课堂上使用数字技术的体验

South African Computer Journal Pub Date : 2023-07-31 DOI: 10.18489/sacj.v35i1.1098

A. Molotsi, Kimera Moodley, M. van Wyk

引用次数: 1

Exploring ideological-ware as a resource in the use of Moodle in higher education – analyzing Covid-19 publications 探索思想工具在高等教育中使用Moodle的资源——分析Covid-19出版物

South African Computer Journal Pub Date : 2023-07-31 DOI: 10.18489/sacj.v35i1.1110

Sphesihle Zuma, Bhekizitha Mthembu

{"title":"Exploring ideological-ware as a resource in the use of Moodle in higher education – analyzing Covid-19 publications","authors":"Sphesihle Zuma, Bhekizitha Mthembu","doi":"10.18489/sacj.v35i1.1110","DOIUrl":"https://doi.org/10.18489/sacj.v35i1.1110","url":null,"abstract":"Across the globe, the advent of the coronavirus disease (Covid-19) has propelled most sectors to do their business online. Higher education institutions (HEIs) in particular have had to move their teaching and learning online, with Moodle reported to be one of the most used platforms internationally. In the context of Covid-19, educational researchers and publications have discussed various ways in which this platform has influenced the three types of curricula, namely: competence curriculum; pragmatic curriculum and performance curriculum. However, there is less emphasis on ideological-ware in the use of Moodle as a teaching and learning resource, which presents a serious challenge and requires systemic debate and reflection. This study uses critical discourse analysis and community of inquiry through purposive and convenience sampling to identify the published documents on the use of Moodle in the context of Covid-19. Findings indicate that most scholars are advocating that the successful use of Moodle in higher education institutions relies on ensuring that hardware and software resources are available for both lecturers and students. This suggests that HEIs are focusing on the performance and competence-based curriculum, yet limited mention is given to ideological-ware as an important aspect when using Moodle.","PeriodicalId":55859,"journal":{"name":"South African Computer Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48589328","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: 0