Understanding Next-Generation VR: Classifying Commodity Clusters for Immersive Virtual Reality

Commodity clusters offer the ability to deliver higher performance computer graphics at lower prices than traditional graphics supercomputers. Immersive virtual reality systems demand notoriously high computational requirements to deliver adequate real-time graphics, leading to the emergence of commodity clusters for immersive virtual reality. Such clusters deliver the graphics power needed by leveraging the combined power of several computers to meet the demands of real-time interactive immersive computer graphics.However, the field of commodity cluster-based virtual reality is still in early stages of development and the field is currently adhoc in nature and lacks order. There is no accepted means for comparing approaches and implementers are left with instinctual or trial-and-error means for selecting an approach.This paper provides a classification system that facilitates understanding not only of the nature of different clustering systems but also the interrelations between them. The system is built from a new model for generalized computer graphics applications, which is based on the flow of data through a sequence of operations over the entire context of the application. Prior models and classification systems have been too focused in context and application whereas the system described here provides a unified means for comparison of works within the field

Assessment and the promotion of academic values

This paper raises issues concerning the relationship between student assessment and the values which academic institutions propagate. It argues that many current assessment practices are incompatible with the goals of independence, thoughtfulness and critical analysis to which most academics would subscribe; that forms of assessment which are commonplace are not consistent with the behaviour of academics in their own contributions to knowledge; and that there is evidence to suggest that the assessment policy of many departments undermines deep approaches to learning on the part of students. Some indications are given of possible strategies to address the problems which have been identified, drawing upon ideas from academic and professional practice in general and self-assessment and peer review in particular

Assessment could demonstrate learning gains, but what is required for it to do so?

A ready source of data to investigate learning gain is that generated normally through student assessment. That such data cannot currently be used for this purpose needs explanation and the refreshment of assessment thinking to bring it in line with thinking about standards. This opinion piece discusses what is required for this to occur

Assessment could demonstrate learning gains, but what is required for it to do so?

A ready source of data to investigate learning gain is that generated normally through student assessment. That such data cannot currently be used for this purpose needs explanation and the refreshment of assessment thinking to bring it in line with thinking about standards. This opinion piece discusses what is required for this to occur

Researching the role of the PhD in developing an academic career: does it make a difference?

This single paper builds on the arguments developed through the think piece by Bak (2013) in that it will report on research that explored academics’ experiences of the role of the PhD in developing their academic careers. Bak (2013) questions the ‘conventional way of approaching the PhD´ in South Africa (p.1) and proposes reconsideration of how doctoral education is conceptualised, delivered and valued. The current study, undertaken in Australia and the UK, commenced from the premise that it is commonly assumed that the PhD prepares people for academic careers, yet little is known about how academics are influenced and developed through doctoral study. Early findings demonstrate that the PhD has not been particularly effective in preparing academics for independent research and teaching and that changes in doctoral education are neede

Broadening the Scope and Increasing the Usefulness of Learning Analytics: The Case for Assessment Analytics

This paper argues that the role that assessment could play within a learning analytics strategy is both significant and, as yet, underdeveloped and underexplored. It proposes that assessment analytics has the potential to make a valuable contribution to the field of learning and academic analytics by both broadening its scope and increasing its usefulness. In doing so it considers issues of operationalization and then moves on to define what we might understand as assessment analytics

Refocusing portfolio assessment: curating for feedback and portrayal

Portfolios are embraced extensively in higher professional education as effective tools for students to represent their learning and help prepare them for future practice. They are very diverse, used for both formative and summative purposes; however, concerns are raised that the current emphasis on academic standards and/or the focus on employability may lead to the perception of portfolios simply as means to portray achievements. This paper argues that contemporary portfolios in digital environments can readily facilitate both purposes. It conceptualises a whole-of-programme approach to the use of portfolios in which consideration is given to the need to bring curation skills and feedback processes to the forefront of portfolio practices. For teachers considering these issues, a planning framework for the design of programme-wide portfolios is proposed

Exploring cultures of feedback practice: the adoption of learning-focused feedback practices in the UK and Australia

In recent years, there have been calls in the literature for the dominant model of feedback to shift away from the transmission of comments from marker to student, towards a more dialogic focus on student engagement and the impact of feedback on student learning. In the present study, we sought to gain insight into the extent to which such a shift is evident in practice, and how practice is shaped by national and disciplinary cultures. A total of 688 higher education staff from the UK and Australia completed a survey, in which we collected data pertaining to key influences on the design of feedback, and the extent to which emphasis is placed on student action following feedback. Our respondents reported that formal learning and development opportunities have less influence on feedback practice than informal learning and development, and prior experience. Australian respondents placed greater emphasis on student action following feedback than their counterparts in the UK, and were also more likely than UK respondents to judge the effectiveness of feedback by seeking evidence of its impact on student learning. We contextualise these findings within the context of disciplinary and career stage differences in our data. By demonstrating international differences in the adoption of learning-focused feedback practices, the findings indicate directions for the advancement of feedback research and practice in contemporary higher educatio

Researching feedback dialogue: an interactional analysis approach

A variety of understandings of feedback exist in the literature, which can broadly be categorised as cognitivist information transmission and socio-constructivist. Understanding feedback as information transmission or ‘telling’ has until recently been dominant. However, a socio-constructivist perspective of feedback posits that feedback should be dialogic and help to develop students’ ability to monitor, evaluate and regulate their learning. This paper is positioned as part of the shift away from seeing feedback as input, to exploring feedback as a dialogical process focusing on effects, through presenting an innovative methodological approach to analysing feedback dialogues in situ. Interactional analysis adopts the premise that artefacts and technologies set up a social field, where understanding human–human and human–material activities and interactions is important. The paper suggests that this systematic approach to analysing dialogic feedback can enable insight into previously undocumented aspects of feedback, such as the interactional features that promote and sustain feedback dialogue. The paper discusses methodological issues in such analyses and implications for research on feedback

Examining the nature and effects of feedback dialogue

Research has conventionally viewed feedback from the point of view of the input, thus analysing only one side of the feedback relationship. More recently, there has be an increased interest in understanding feedback-as-talk. Feedback dialogue has been conceptualised as the dynamic interplay of three dimensions: the cognitive, the social-affective and the structural. We sought to explore the interactional features of each dimension and their intermediary effects on students. We analysed students’ feedback dialogue excerpts as cases using interactional analysis. Analysis involved iterative inductive and deductive coding and interpretation of feedback texts generated in an online course. The cognitive, social-affective and structural dimensions were interwoven within excerpts of feedback dialogue with effects on learners that extended beyond the immediate task (e.g. reframing of learners’ ideas, critical evaluation). The interactional features of each dimension include: cognitive (e.g. question asking, expressing oneself); social-affective (e.g. disclosure, expressing empathy); and structural (e.g. longitudinal opportunities for dialogue, invitational opportunities). The study provides evidence that strengthens the call for reconceptualising feedback as a dialogic and relational activity as well as supporting the view that dialogic feedback can be a key strategy for sustainable assessment