1,720,984 research outputs found
The role of motivation in regulating the extent to which data visualisation literacy influences business intelligence and analytics use in organisations
Full text linkDissertation (MCom (Informatics))--University of Pretoria 2022.The ability to read and interpret visualised data is a critical skill to have in this information age where business intelligence and analytics (BI&A) systems are increasingly used to support decision-making. Data visualisation literacy is seen as the foundation of analytics. Moreover, there is great hype about data-driven analytical culture and data democratisation, where users are encouraged to have wide access to data and fully use BI&A to reap the benefits. Motivation is a stimulant to the richer use of any information system (IS), yet literature provides a limited understanding of the evaluation of data visualisation literacy and the effect of motivation in the BI&A context. Thus, this study aims to explain the role of motivation in regulating the extent to which data visualisation literacy influences BI&A’s exploitative and explorative use in organisations. Data visualisation literacy is measured using six data visualisations that focus on the five cognitive basic intelligent analytical tasks that assess the user's ability to read and interpret visualised data. Two types of motivations are assessed using perceived enjoyment as an intrinsic motivator and perceived usefulness as an extrinsic motivator. The model is tested using quantitative data collected from 111 users, applying Structural Equation Modelling (SEM). The results indicate that intrinsic motivation exerts a positive effect on BI&A exploitative and explorative use while extrinsic motivation has a positive effect on BI&A exploitative use but weakens innovation with a negative effect on explorative use. The results further show an indirect relationship between data visualisation literacy with BI&A use through motivation. In addition, exploitation leads to creativity with exploitation positively being associated with exploration.InformaticsMCom (Informatics)Unrestricte
Throwing a light on oral narrative data in order to inform language and literacy research
Full text linkNarrative methodologies are valuable to language and literacy research. Oral narratives told in situations of face-to-face interaction are used in research methodologies and in scaffolding pedagogic activities. Nevertheless oral narratives often present limiting cases in which narrative accounts are less easily distinguishable from other genres such as interrogative, expository, descriptive or argumentative accounts. The resulting confusion around genre has an impact on data selection and weighing and thereby on how narrative is mobilised in research and in pedagogic situations. This paper presents the results of a corpus-based statistical investigation into the interactional features of oral narrative accounts collected during academic literacy interviews. Common claims made about narratives, such as that they are structurally differentiated, that they rely on more turns at talk or that they are a unique manner of presenting discrete experiences are not supported in a straightforward way in the corpus data. Narratives do promote more involvement, self-reference, complex embeddings and constructed dialogue. Conversely they are less frequent, less on task and are more consistently aligned with their context. In language and literacy research these findings suggest a need to reflect on the relationship between types of participant response, types of solicitation and allocated response times. The study contributes to differentiating discourse types more accurately and emphasises the particularities of oral narrative interaction
The adult learner self-directedness scale : validity and reliability assessment
Full text linkJ.B. was responsible for the conceptualisation, methodology,
funding acquisition and writing the original draft of the
article. A.M. contributed to the methodology, formal analysis
and software, as well as reviewing and editing the article.
Both J.B. and A.M. contributed equally to the completion of
the article.ORIENTATION : The absence of a scale to assess the academic self-directedness of adult learners in South African open, distance and e-learning milieus.
RESEARCH PURPOSE : This article describes the further validity and reliability assessment of the Adult Learner Self-Directedness Scale (ALSDS), which assesses adult learners' academic self-directedness in an open, distance and e-learning (ODeL) university in South Africa. An initial validity and reliability study yielded a four-factor scale with 35 items loading onto it, while this study reports on a three-factor scale with 15 items loading onto it.
MOTIVATION FOR THE STUDY : Factors such as socio-economic conditions and past education practices make South African open, distance and e-learning higher education (ODeLHE) challenging for socio-economically disadvantaged students. The growing trend of online tuition and assessment in South African universities requires research into strategies that may improve a student's success and throughput. In ODeLHE, student self-directedness may contribute to academic success, and thus a reliable scale is needed to assess it. Currently, there is no such South African scale.
RESEARCH APPROACH/DESIGN AND METHOD : A quantitative, cross-sectional research design was implemented, using self-report data from the students of the College of Economic and Management Sciences at a South African ODeL university. The ALSDS comprises three factors: success orientation for ODeLHE (self-efficacy beliefs), active academic behaviour (learner agency) and use of strategic resources (learning context management).
MAIN FINDINGS : The findings indicate that the ALSDS appears to be a valid, internally consistent and reliable scale suitable for assessing ODeLHE adult learners' academic self-directedness. Further research is, however, required to establish metric and scalar invariance
PRACTICAL/MANAGERIAL IMPLICATIONS : The scale may provide a reliable starting point for developing a scale for assessing ODeLHE students' existing academic self-directedness. Knowledge of existing self-directedness capacity may be useful in designing and implementing holistic learner support programmes.
CONTRIBUTION/VALUE-ADD : The ALSDS may provide a reliable Afrocentric starting point for developing a measure for assessing the academic self-directedness of South African ODeLHE students.This research is based on a DCom postgraduate study
conducted by the author J.-A. Botha, in 2018 at the University
of South Africa that was funded through an internal bursary
by University of South Africa (Unisa) for postgraduate
studies by academic employees.http://www.sajip.co.zaam2023Statistic
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
The Practice of Oral Medicine in South Africa
Full text linkOral medicine is a clinical discipline, practiced by periodontists, which concerns itself mostly with the non surgical management of oral mucosal diseases. Many of these diseases are rare and the discipline less well known – making it essential to identify the obstacles this discipline faces. The purpose of this study was to describe the private and academic practice of Oral Medicine. A self-administered, internet-based, questionnaire was distributed to South African periodontists which questioned the clinician’s competency, diseases managed, special investigations performed, referral sources, proportional time and monetary distribution of the discipline, and perceived barriers to the practice. Twenty-six periodontists completed the questionnaire. In comparison to periodontology and implantology, periodontists generally feel less competent, spend less time on, and receive less money from Oral Medicine. Lack of awareness of the speciality (55.6% - 59.3%) was identified as the biggest constraint, with only 11.2% of referrals received from medical doctors. Immune-mediated diseases (29.3%) and benign neoplasms (26.5%) are managed the most, and surgical biopsies (80.2%) are used most regularly to diagnose oral mucosal disease. Oral Medicine is still a lesser-known clinical speciality. Despite the heavy burden of HIV-related oral disease and oral mucosal malignancies, this speciality remains underutilised
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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