Description:
Algorithms using content-based patterns to segment moving regions at the macroblock (MB) level have exhibited good potential for improved coding efficiency when embedded into the H.264 standard as an extra mode. The content-based pattern generation (CPG) algorithm provides local optimal result as only one pattern can be optimally generated from a given set of moving regions. But, it failed to provide optimal results for multiple patterns from entire sets. Obviously, a global optimal solution for clustering the set and then generation of multiple patterns enhances the performance farther. But a global optimal solution is not achievable due to the non-polynomial nature of the clustering problem. In this paper, we propose a near-optimal content-based pattern generation (OCPG) algorithm which outperforms the existing approach. Coupling OCPG, generating a set of patterns after clustering the MBs into several disjoint sets, with a direct pattern selection algorithm by allowing all the MBs in multiple pattern modes outperforms the existing pattern-based coding when embedded into the H.264.
Description:
Algorithms using content-based patterns to segment moving regions at the macroblock (MB) level have exhibited good potential for improved coding efficiency when embedded into the H.264 standard as an extra mode. The content-based pattern generation (CPG) algorithm provides local optimal result as only one pattern can be optimally generated from a given set of moving regions. But, it failed to provide optimal results for multiple patterns from entire sets. Obviously, a global optimal solution for clustering the set and then generation of multiple patterns enhances the performance farther. But a global optimal solution is not achievable due to the non-polynomial nature of the clustering problem. In this paper, we propose a near-optimal content-based pattern generation (OCPG) algorithm which outperforms the existing approach. Coupling OCPG, generating a set of patterns after clustering the MBs into several disjoint sets, with a direct pattern selection algorithm by allowing all the MBs in multiple pattern modes outperforms the existing pattern-based coding when embedded into the H.264.
Description:
BACKGROUND: Older workers are less physically active and have a higher rate and cost of injury than younger workers and so have reduced work-ability. Concurrently, sedentary behaviour in the workplace, in transport and in the home is increasing and has harmful health effects. Walking is a familiar, convenient, and free form of health-enhancing physical activity that can be integrated into working life and sustained into older age however workplace walking programs targeted at older workers have not been evaluated. PURPOSE: We designed a randomised-controlled trial to evaluate the impact of a phased individually-tailored 10-week walking program on work-day steps, health status and work-ability of employees at an Australian university with an ageing sedentary workforce. METHODS: A convenience sample of 154 academic and administrative employees aged 45-70 years will be recruited and randomly allocated to either an experimental (walking) group or control (maintain usual activity) group. Participants will be provided with a pedometer and complete measures for step count, % body fat, waist circumference, blood pressure, self-reported physical activity, psychological wellbeing and work-ability, at baseline and end-intervention. 'Walkers' will select approaches tailored to their individual preference, psychological characteristics or life circumstances. Two distinct intervention phases will target adoption (weeks 2-5) and adherence (weeks 7-12) using 'Stages of Behaviour Change' principles. An ANOVA will test for effect of treatment on outcome with the baseline value entered as a covariate. DISCUSSION: This study will test whether tailoring worksite walking is an effective means of promoting health-enhancing physical activity in ageing sedentary workers.
Description:
This article focuses on Big Picture thinking about 21st-century teacher education and presents a conceptual shift as the result of two decades of research and practice centred around an understanding that we live in a world troubled by a massive breakdown in relationships. Through reflection within four specific educational contexts and with the recognition of a need for the personal and social development of teachers, a person-centred model of teacher education, the transformism model, has been developed. The transformism, or evolution of teacher education, seeks to use a different mind-set, or a changed psychology, which moves away from a focus on the control of others by those who think they know what is best. Rather it is about transformative learning, achieved through reflection within a landscape of transformation. Effective teacher education, using this model embraces Gardner’s Five Minds for the Future and the embedding of Glasser’s choice theory. The conceptual shift occurs through a major change in consciousness and the concomitant development of a worldview rather than a me view
Description:
Urban remnant vegetation, especially where it occurs in public parks, allows for relatively easy access for ongoing biodiversity monitoring. However, relatively little baseline information on bird species distribution and abundance across a range of identifiable urban remnants appears in the published literature. We surveyed the relative abundance and distribution of birds across urban and suburban remnant vegetation in Melbourne, Australia. One hundred and six species were recorded, of which 98 were indigenous. Red wattlebirds had the highest mean relative abundance with 2.94 birds/ha, followed by rainbow lorikeets (2.51), noisy miners (1.93), brown thornbills (1.75) and spotted doves (0.96). There was no obvious trend between overall relative abundance and the size of the remnant, in contrast to species richness which was positively correlated with remnant size. The data revealed that some species were either totally restricted to, or more abundant in, larger remnants and generally absent from smaller remnants. Some of the more common birds (crimson rosella, superb fairy-wren, spotted pardalote and black-faced cuckoo-shrike) recorded during this study were detected at similar densities to those found in comparable vegetation to the east of Melbourne within a largely forested landscape. Other species occurred at much lower densities (e.g., white-browed scrubwren, brown thornbill, eastern yellow robin and grey fantail) or had habitat requirements or ecological characteristics that could place them at risk of further decline or local extinction in the urban area. We identify a suite of bird species of potential conservation concern within Melbourne's urban landscape. The establishment of repeatable, fixed-point, and long-term monitoring sites will allow for repeat surveying over time and provide an early warning of population declines, or conversely an indication of population increase for other species.
Description:
Purpose: The main purpose of this study was to determine the relationships between countermovement jump (CMJ) variables and acceleration and maximum speed performance. Methods: Twenty-three elite Australian football players were tested on a CMJ, which yielded several kinematic and kinetic variables describing leg muscle function. A 40 m sprint was also conducted to assess acceleration (10 m time) and an estimate of maximum speed (flying 20 m time). Players from one Australian Football League (AFL) club were tested and Pearson correlations for CMJ variables and sprint performance were calculated. Results: Jump height, peak velocity, peak force, and peak power had less than 50% common variance, and therefore represented independent expressions of CMJ performance. Generally, the correlations between CMJ variables and sprinting performance were stronger for maximum speed (small to large effect sizes) than for acceleration (trivial to moderate sizes). The variable that produced the strongest correlation with acceleration was jump height (r = -0.430, P = .041) and with maximum speed was peak power/weight (r = -0.649, P = .001). Conclusions: The results indicate that if an integrated system comprising a position transducer and a force platform is available for CMJ assessment, jump height and peak power/weight are useful variables to describe leg muscle explosive function for athletes who perform sprints.
Description:
This purpose of this article is to explore impediments to effective whistleblowing as a strategy for promoting anti-corruption practices within the South African public sector. Corruption, which violates the public service code of conduct; deters foreign investment, increases the cost of public service delivery, undermines the fight against poverty and unnecessarily burdens the criminal justice system. The article addresses the question on whether legislation on whistleblowing is adequate to encourage whistleblowing in the public sector.A review of literature determines that the effective implementation of whistleblowing legislation is largely dependent on addressing the challenges identified in the article. The quantitaive research method was employed in the study to ascertain the views of employees in the public sector on whistleblowing. Empirical findings confirm the hypothesis that the protection of whistleblowers through legislation is inadequate to encourage whistleblowing. The article provides a conceptual framework for the effective achievement of the intended outcomes of whistleblowing in the public sector.
Description:
We provide economy-wide modelling results of the national and regional implications of two current challenges facing the Australian wine industry: a decline in export demand, and a possible change in the tax on domestic wine sales following the Henry Review of Taxation. The demand shock causes regional GDP to fall in the cool and warm wine regions, but not in the hot wine regions unless the shock is large. A change from the current ad valorem tax to a similarly low volumetric tax on domestic wine sales causes regional GDP to rise in the cool and warm wine regions, partly offsetting its fall due to the export demand shock, but GDP in the hot wine regions would fall substantially. The switch to a volumetric tax as high as the standard beer rate would raise tax revenue and lower domestic wine consumption by more than one-third. However, it would induce a one-third decrease in production of non-premium wine as its consumer price would rise by at least three-quarters (while the average price of super premium wines would change very little). This would exacerbate the difference in effects of a tax reform on GDP in hot versus warm and cool wine regions.
Description:
This article aims to contribute to understandings of youth homelessness and subjectivity by analysing identity construction in terms of young people’s negotiation of the structural and institutional environment of youth homelessness. I suggest that while existing literature on this topic concentrates mainly on micro-social encounters, the identities of young people experiencing homelessness can be understood as constructed by structural processes described by Ulrich Beck’s individualisation thesis. Narratives from 20 Australian young people are analysed for how their identities are constructed in their contact with the institutions which govern youth homelessness, and the way these young people make sense of the structural conditions they are facing. Two narrative trajectories are identified. In narratives describing movement into homelessness, young people articulate feelings of failure and shame, consequences of their individualised understanding of their biography. In narratives describing movement out of homelessness into a home, young people articulate feelings of strength and pride, while also describing those who remain homeless in ways which reflect the status of homelessness as a stigmatised difference. This article concludes by discussing the way that structural, institutional and subjective processes interact to produce the identities of young people experiencing homelessness, and reflects on the utility of understanding youth homelessness as a form of individualised social inequality.
Description:
Background: In the development and delivery of pre‑registration baccalaureate nursing programs, universities must address both the needs of industry and the registering authorities that regulate health professional practice. Balanced with this, providers of education at this level also wish to deliver an experience to students that they both value and enjoy. Objective: This paper describes the findings of a study examining these factors in the first year of four pre‑registration programs at a rural campus and outreach centre of one Australian university. Design: A descriptive, exploratory survey was employed in this research, which is drawn from a larger study into entry pathway, success and academic experience. Results: Results indicate that students found units such as fundamental nursing subjects and law most enjoyable and valuable. Units with a sociological foundation were considered less enjoyable and valuable. Overall, students recognised the value of the bioscience units while contrarily not expressing enjoyment of this aspect of their studies. Conclusions: These findings have implications for nurse educators in respect of the content and delivery of pre‑registration nursing programs. As first year students, the participants may have been focused on learning fundamental nursing tasks, lacking an understanding of the breadth of knowledge required for their professional role. Future research into aspects of nursing studies found to be most valuable may provide a different perspective if conducted in the period post graduation.
Description:
Print and electronic media coverage of disasters raises a multitude of issues about the media’s role during and after a crisis. This article focuses on a specific issue: the affective dimension of news media coverage immediately following a crisis. The selection and presentation of bushfire stories not only disseminates information but elicits emotion from audiences. I use textual and visual analysis of The Age newspaper’s coverage of the 2009 Victorian bushfires to examine the discursive structuring of affect. Comparisons are made with coverage of earlier bushfire disasters (the 1983 Ash Wednesday fires and the 1939 Black Friday fires) in order to investigate changes in the visual and verbal discourses of bushfire reporting. The article demonstrates that there is an intensification of affect in contemporary media coverage that is not present in the coverage of previous bushfires, and that this has implications for the role of the emotions in public life and for our conception of the public sphere.
Description:
Aim We assessed how avian biodiversity and above-ground carbon storage were related in different forest age-classes, including mature stands (> 100 years), in a managed, mixed-species eucalypt forest. Location Gippsland, south-eastern Australia. Methods In 50 2-ha stands ranging in age from ≤ 5 years to mature stands > 100 years, we undertook repeated avian surveys, performed detailed habitat measurements and estimated amounts of above-ground carbon. Extensive wildfire reduced the number of sites to 28 (seven in each of four age classes) upon which analyses and inferences were made. We also analysed data on carbon storage and some bird responses from previously published studies. Results Mature vegetation (> 100 years) had the greatest richness, abundance and biomass of birds. Key ecological resources, such as tree-hollows for nesting, generally occurred mostly in stands > 60 years. Avian richness per unit of above-ground carbon storage was relatively low for stands of 20–60 years. While above-ground carbon storage appeared to increase in a monotonic fashion as stands age and mature, there were quantum increases in all measures of avian biodiversity in mature stands (> 100 years). Main conclusions Our results suggest that carbon is organized in a different way, with substantially greater biodiversity benefits, in very old stands. Mature vegetation simultaneously maximizes both avian biodiversity and above-ground carbon storage. These results bolster arguments for allocating highest priorities to the preservation of old-growth forest stands rather than alternative investments (e.g. reafforestation for carbon sequestration).
Description:
The significant opportunities that the plays of Shakespeare and some of his more famous contemporaries offer for the exploration of heightened text are discussed. The key aspects and features of the training built on and provided at the Ballarat Arts Academy to ground students in acting skills and studio practice from a contemporary perspective are highlighted.
Description:
The significant opportunities that the plays of Shakespeare and some of his more famous contemporaries offer for the exploration of heightened text are discussed. The key aspects and features of the training built on and provided at the Ballarat Arts Academy to ground students in acting skills and studio practice from a contemporary perspective are highlighted.
Description:
Among the many changes occurring across Chinese society in the early phase of Y2K is the construction and implementation of a new physical education (PE) curriculum. Not unlike recent changes in Australia, New Zealand and the UK, this process has seen a heightening of the emphasis on health. Presented within a wider framework for making the school curriculum more relevant, PE is more closely aligned with China’s emerging population health concerns around lifestyle practices of its youth. Foremost here are burgeoning social anxieties about decreased levels of physical activity, poor dietary practices, risk-taking tendencies, and a general shift in focus from ideology to skills. This paper reports on a study undertaken to explore the perceptions of Chinese PE teachers and their engagement with the new PE & Health curriculum. The data reveals a number of structural, personal and cultural factors that work against PE teachers taking up the opportunities presented in the new curriculum. Prominent here are; low professional status, lack of resources, lack of training and the grip of deeply rooted cultural value
Description:
Traditionally, the policing of protest has been a vexed and problematic issue. The contemporary policing of climate change protests and camps challenges police capability both to facilitate such protests and to maintain control and order. The case study of the policing of the September 2009 protest against the Hazelwood coal-fuelled power station in the Latrobe Valley presents a microcosm of the dilemmas faced by both police and protesters in negotiating effective and peaceful protest. The eclectic and disparate nature of the climate change protests based on affinity groups affronts the police bureaucratic structure. This article argues that police-protester dialogue and negotiation, although limited by traditional suspicions, polarised organisational structures and diverse mindsets, are vital for the successful facilitation of peaceful protest, especially in relation to ongoing climate change dissent against coal-fired power plants.
Description:
Traditionally, the policing of protest has been a vexed and problematic issue. The contemporary policing of climate change protests and camps challenges police capability both to facilitate such protests and to maintain control and order. The case study of the policing of the September 2009 protest against the Hazelwood coal-fuelled power station in the Latrobe Valley presents a microcosm of the dilemmas faced by both police and protesters in negotiating effective and peaceful protest. The eclectic and disparate nature of the climate change protests based on affinity groups affronts the police bureaucratic structure. This article argues that police-protester dialogue and negotiation, although limited by traditional suspicions, polarised organisational structures and diverse mindsets, are vital for the successful facilitation of peaceful protest, especially in relation to ongoing climate change dissent against coal-fired power plants.
Description:
Summary Introduction This paper describes the development and outcomes of a locally-based journal that is contributed to and managed by nurses, midwives and academics within an area health service (AHS) in NSW, Australia. Background Nurses and midwives are often engaged in scholarly and rigorous activities aimed at improving practice and patient outcomes. However, often these endeavours remain unreported, unpublished and hence not shared for the benefit of others. Reasons given for nurses’ and midwives’ persistent reluctance to publish are well documented in the literature. Lack of expertise and understanding of the publication process, together with lack of confidence and opportunity are the reasons most often cited. To overcome these barriers we developed a local journal called Handover that provides a non-threatening, supportive opportunity for nurses and midwives to develop skills in writing and reviewing articles for publication. Handover was established and is managed by editorial committee members from the area health service and the two local universities. Each institution agreed to co-fund the journal which is published twice yearly. Two editions of the journal have been published with wide ranging content and contributions from across the AHS. Writing mentorship and support systems have been established. Reviewers workshop have been conducted and novice reviewers mentored by experienced reviewers. Conclusion Our experience indicates that a locally based and owned journal can motivate and support novice writers and offers one solution to many of the barriers to publication identified in the literature. Keywords