Use of web-conferencing software to enhance practical learning for distance students in a first-year Engineering course

BACKGROUND : For many years, Deakin University has delivered an accredited undergraduate engineering course by means of distance education. One of the chief challenges is to provide the necessary practical instruction and experience in engineering to these students. In first-year physics and first-year materials science, off-campus students normally attend on-campus lab classes either on a Saturday or as part of a residential school. However, because some students live either interstate or overseas, it is sometimes impossible for small groups of students to attend an on-campus lab class. PURPOSE : This paper investigates whether web-conferencing software can be an effective means for delivering practical classes to small groups of distance students in first-year physics and also first-year materials. METHOD : Over three semesters in 2012, we employed the Elluminate-Live! software platform to broadcast six lab practicals in first-year physics, and one practical in first-year materials engineering. The students submitted practical reports as did all the other students in each unit. The students in each unit fell into three groups: on-campus students, off-campus students who performed their practicals on-campus, and off-campus students who performed their practicals “virtually” via an Elluminate-Live! session. RESULTS : The trials showed that it is possible to broadcast both physics and materials practical classes by means of web-conferencing software. Report marks of the students performing practicals by this method were comparable to those in the other groups. CONCLUSIONS : Our experience with four initial trials in delivering practical classes over the Internet was encouraging, and showed that the concept will work if done in an effective way.

Something like an emergency

‘Something like an emergency’, a sonic poem recorded on CD, investigates the hunger of writing as a desire, not for a return of the dead, but for a breakthrough of impasses in language, both in love and in the writer’s (frustrated) translation of vision. Proceeding from Bachelard’s phenomenological observation that the poetic image puts language in a state of emergence, this work argues, instead, that poetry puts language in a state of emergency. Deleuze and Guattari’s idea of music as a deterriorialization of the refrain; a rhythmic pattern which marks out a territory, is invoked in both the music performance and in the words. The writing uses a ‘matting’ (rhizomatic) effect in its verse fragments which echo and refract others. Reverberation is also explored in the piano and its sonic processing which provides elements of dissonance and consonance, refracting dialogues in the text. Voice and music sometimes argue, sometimes agree, and sometimes are indistinguishable. However, this dialectic is further disturbed: at times the piano and voice seem to pay no attention to each other, taking off on their own ‘lines of flight’, in subversion of ‘collaboration’. In its use of recorded improvisational techniques this work also challenges the ‘superiority’ of live improvisation.
It was first performed at Double Dialogues conference, ‘The Hunger Artist: Food and the Arts’, Toronto, 2010. The text and accompanying discursive article form a book chapter in 2012 Food and Appetites: The Hunger Artist and the Arts, Ann McCulloch and Pavlina Radia(eds). It has been broadcast on RRR, 3CR radios and is released on CD and Youtube. By invitation it was performed at the Midsumma Festival, 2014.

On the multicast lifetime of WANETs with multibeam antennas : Formulation, algorithms, and analysis

We explore the multicast lifetime capacity of energy-limited wireless ad hoc networks using directional multibeam antennas by formulating and solving the corresponding optimization problem. In such networks, each node is equipped with a practical smart antenna array that can be configured to support multiple beams with adjustable orientation and beamwidth. The special case of this optimization problem in networks with single beams have been extensively studied and shown to be NP-hard. In this paper, we provide a globally optimal solution to this problem by developing a general MILP formulation that can apply to various configurable antenna models, many of which are not supported by the existing formulations. In order to study the multicast lifetime capacity of large-scale networks, we also propose an efficient heuristic algorithm with guaranteed theoretical performance. In particular, we provide a sufficient condition to determine if its performance reaches optimum based on the analysis of its approximation ratio. These results are validated by experiments as well. The multicast lifetime capacity is then quantitatively studied by evaluating the proposed exact and heuristic algorithms using simulations. The experimental results also show that using two-beam antennas can exploit most lifetime capacity of the networks for multicast communications. © 2013 IEEE.

Social media conflict: platforms for racial vilification, or acts of provocation and citizenship?

Although racism remains an issue for social media sites such as YouTube, this focus often overshadows the site’s productive capacity to generate ‘agonistic publics’ from which expressions of cultural citizenship and solidarity might emerge. This paper examines these issues through two case studies: the recent proliferation of mobile phone video recordings of racist rants on public transport, and racist interactions surrounding the performance of a Maori ‘flash mob’ haka in New Zealand that was recorded and uploaded to YouTube. We contrast these incidents as they are played out primarily through social media, with the case of Australian Football League player Adam Goodes and the broadcast media reaction to a racial slur aimed against him by a crowd member during the AFL’s Indigenous Round. We discuss the prevalence of vitriolic exchange and racial bigotry, but also, and more importantly, the productive and equally aggressive defence of more inclusive and tolerant forms of cultural identification that play out across these different media forms. Drawing on theories of cultural citizenship along with the political theory of Chantal Mouffe, we point to the capacities of YouTube as ‘platform’, and to social media practices, in facilitating ground-up antiracism and generating dynamic, contested and confronting micropublics.

When good dictators go bad: examining the 'transformation' of Colonel Gaddafi

On October 20, 2011, the 42 year rule of Colonel Muammar Gaddafi came to a violent end after months ofintense and brutal fighting. The violence in which Gaddafi died and the ensuing abuse of his dead body by his killers wascaptured on film and broadcast around the world. This gruesome end was the antithesis to his rise to power in 1969,where he was welcomed as a savior and a hero. Until his death, Gaddafi was the longest-serving non-monarchical Headof State and was considered by most scholars more likely to die of natural causes than be overthrown by his people. Sowhat happened in those 42 years that caused Gaddafi to go from beloved liberator to hated oppressor? And what is hislasting legacy for the country he ruled for over four decades?

Foreign correspondents and international newsgathering: the role of fixers

This book reveals that ‘fixers’—local experts on whom foreign correspondents rely—play a much more significant role in international television newsgathering than has been documented or understood. Murrell explores the frames though which international reporting has traditionally been analysed and then shows that fixers, who have largely been dismissed by scholars as "logistical aides", are in fact central to the day-to-day decision-making that takes place on-the-road. Murrell looks at why and how fixers are selected and what their significance is to foreign correspondence. She asks if fixers help introduce a local perspective into the international news agenda, or if fixers are simply ‘People Like Us’ (PLU). Also included are excerpts from interviews with TV correspondents and fixers and in-depth case studies of correspondents in Iraq and Indonesia.

Obese adults' perceptions of news reporting on obesity: the panopticon and synopticon at work

News reporting, in channels such as broadcast and print media, on obesity as an issue has increased dramatically in the last decade. A qualitative study, in which we used in-depth interviews and thematic analysis, was undertaken to explore 142 obese individuals’ perceptions of, and responses to, news reporting about obesity. Participants believed that news reporting on obesity focused on personal responsibility and blame, and portrayed obese people as “freaks.” They described being portrayed as “enemies” of society who were rarely given a voice or identity in such news coverage unless they were seen to be succeeding at weight loss. They were also critical of the simplistic coverage of obesity, which was in contrast with their personal experiences of obesity as complex and difficult to address. Participants believed that obesity news reporting added to the discrimination they experienced. We consider how this news reporting may act as a form of “synoptical” social control, working in tandem with wider public health panoptical surveillance of obesity.

Evaluating and predicting risk to a large reptile (Varanus varius) from feral cat baiting protocols

Control of introduced predators to mitigate biodiversity impacts is a pressing conservation challenge. Across Australia feral cats (Felis catus) are a major threat to terrestrial biodiversity. Currently feral cat control is hindered by the limited utility of existing predator baiting methods. Further proposed control methods include use of the novel poison para-aminopropiophenone (PAPP) which may present a hazard to some native animal populations. Here we used experimental and predictive approaches to evaluate feral cat bait take by a large native Australian predatory reptile the Lace monitor (Varanus varius). These lizards would be expected to readily detect, ingest and consume a lethal dose (depending on toxin) from surface-laid baits intended for feral cat control if a precautionary approach was not adopted when baiting. We modelled V. varius bait take using experimental and predictive biophysical modelling approaches to evaluate temporal effects of climate variables on V. varius activity and hence potential for bait removal. Finally we conducted a pre-PAPP baiting site occupancy assessment of V. varius within Wilson Promontory National Park (WPNP) to provide a basis for monitoring any longer term population effects of cat baiting. V. varius removed 7 % of deployed baits from 73 % of bait stations across another study area in Far Eastern Victoria. Daily bait removal was positively correlated with maximum temperature and solar radiation. Biophysical modelling for Far Eastern Victoria predicted that maximum temperatures <19.5 °C prevented V. varius activity and hence opportunity for bait removal. V. varius in WPNP was undetectable suggesting aerial baiting posed limited hazard to this species at this location. Depending how climate influences annual activity patterns and the specific poison, surface-laid baits could pose a significant mortality risk to V. varius. However, use of biophysical models to predict periods of V. varius inactivity may provide a novel means to reduce non-target bait take by this predator.