Mark Shorter : Dry Gulch

This is a catalogue essay for Mark Shorter's exhibition "Dry Gulch" held at Boxcopy, Brisbane, in 2014. "Dry Gulch is a durational performance and installation in which the artist, Mark Shorter, occupies the pitch-­‐black gallery space for the opening hours of the exhibition. While drawing on the vocabulary of 1970s conceptual performance art (think Vito Acconci, Chris Burden, Marina Abramovic et al.), it is also an exhibition specifically of its time and its place. It probes and, at times, illuminates (pun intended) some of the dark corners of subjective experiences in a contemporary context typically swamped by distractions and saturated with templates for self-­‐actualisation...."

Unsteady ejectors: The effect of driver jet mark-space ratio

mark Unsteady ejectors can be driven by a wide range of driver jets. These vary from pulse detonation engines, which typically have a long gap between each slug of fluid exiting the detonation tube (mark-space ratios in the range 0.1-0.2) to the exit of a pulsejet where the mean mass flow rate leads to a much shorter gap between slugs (mark-space ratios in the range 2-3). The aim of this paper is to investigate the effect of mark-space ratio on the thrust augmentation of an unsteady ejector. Experimental testing was undertaken using a driver jet with a sinusoidal exit velocity profile. The mean value, amplitude and frequency of the velocity profile could be changed allowing the length to diameter ratio of the fluid slugs L/D and the mark-space ratio (the ratio of slug length to the spacing between slugs) L/S to be varied. The setup allowed L/S of the jet to vary from 0.8 to 2.3, while the L/D ratio of the slugs could take any values between 3.5 and 7.5. This paper shows that as the mark-space ratio of the driver jet is increased the thrust augmentation drops. Across the range of mark-space ratios tested, there is shown to be a drop in thrust augmentation of 0.1. The physical cause of this reduction in thrust augmentation is shown to be a decrease in the percentage time over which the ejector entrains ambient fluid. This is the direct result ofthe space between consecutive slugs in the driver jet decreasing. The one dimensional model reported in Heffer et al. [1] is extended to include the effect of varying L/S and is shown to accurately capture the experimentally measured behavior ofthe ejector. Copyright © 2010 by the American Institute of Aeronautics and Astronautics, Inc.

Functional outcome of transfemoral amputees fitted with an osseointegrated fixation : temporal gait characteristics

The purpose of this study was to characterise the functional outcome of 12 transfemoral amputees fitted with osseointegrated fixation using temporal gait characteristics. The objectives were (A) to present the cadence, duration of gait cycle, support and swing phases with an emphasis on the stride-to-stride and participant-to-participant variability, and (B) to compare these temporal variables with normative data extracted from the literature focusing on transfemoral amputees fitted with a socket and able-bodied participants. The temporal variables were extracted from the load applied on the residuum during straight level walking, which was collected at 200 Hz by a transducer. A total of 613 strides were assessed. The cadence (46±4 strides/min), the duration of the gait cycle (1.29±0.11 s), support (0.73±0.07 s, 57±3% of CG) and swing (0.56±0.07 s, 43±3% of GC) phases of the participants were 2% quicker, 3%, 6% shorter and 1% longer than transfemoral amputees using a socket as well as 11% slower, 9%, 6% and 13% longer than able-bodied, respectively. All combined, the results indicated that the fitting of an osseointegrated fixation has enabled this group of amputees to restore their locomotion with a highly functional level. Further longitudinal and cross-sectional studies would be required to confirm these outcomes. Nonetheless, the data presented can be used as benchmark for future comparisons. It can also be used as input in generic algorithms using templates of patterns of loading to recognise activities of daily living and to detect falls.

The promoting adult resilience (PAR) program : the effectiveness of the second, shorter pilot of a workplace prevention program

This article details the second, successful pilot of the Promoting Adult Resilience (PAR) program in the human-services departments of a local government organization. The PAR program is a strengths-based resilience building program that integrates Interpersonal and CBT perspectives and this pilot use a shorter, 7-week version of the program. Pre, post and follow-up measures on PAR participants from a resource-sector company were compared with a non-intervention matched comparison group. Post-test, PAR participants reported greater self-efficacy, more family satisfaction, greater f\work-life fit and balance and less negative family to work spillover than the comparison group. At the 6-month follow-up, these gains were maintained to a lesser degree, although work-life balance was strengthened, and negative spillover in both directions reduced. Participants also reported greater optimism for the future, greater work satisfaction and promisingly for human service workers, exhaustion was reduced and more vigour, important for human services as burnout, exhaustion is part of this is a serious work hazard

Accelerated Partial Breast Irradiation (APBI) : a review of available techniques

Breast conservation therapy (BCT) is the procedure of choice for the management of the early stage breast cancer. However, its utilization has not been maximized because of logistics issues associated with the protracted treatment involved with the radiation treatment. Accelerated Partial Breast Irradiation (APBI) is an approach that treats only the lumpectomy bed plus a 1-2 cm margin, rather than the whole breast. Hence because of the small volume of irradiation a higher dose can be delivered in a shorter period of time. There has been growing interest for APBI and various approaches have been developed under phase I-III clinical studies; these include multicatheter interstitial brachytherapy, balloon catheter brachytherapy, conformal external beam radiation therapy and intra-operative radiation therapy (IORT). Balloon-based brachytherapy approaches include Mammosite, Axxent electronic brachytherapy and Contura, Hybrid brachytherapy devices include SAVI and ClearPath. This paper reviews the different techniques, identifying the weaknesses and strength of each approach and proposes a direction for future research and development. It is evident that APBI will play a role in the management of a selected group of early breast cancer. However, the relative role of the different techniques is yet to be clearly identified.

Once Upon a Misconception : Mark Juddery's Busted [A Review]

Forget Disney's timeless tales of rags-to-riches. Princesses are the most overrated public figures of all time. Apparently. Cinderella, after all, was 'a calculating, sinister go-getter' who murdered her step-mother at the instruction of a jealous governess (88). Sleeping Beauty was raped as she slept, woken not by the wet kiss of a handsome prince, but the kick and punch of twins stirring in her belly. Over the centuries, only the pea-detecting princess has remained herself: hedonistic, melodramatic and 'still perhaps the most pampered, precious wimp in the history of fairy tales' (88). There are, however, shards of truth to be salvaged from the fractured lives of these glassy-eyed women. After all, even Princess Mary worked in real estate.

Book Review: "Mark Considine, Jenny Lewis and Damon Alexander Networks, Innovation and Public Policy : Politicians, Bureaucrats and the Pathways to Change inside Government Houndsmills, UK: Palgrave Macmillan, 2009"

Having wrung the most from workforce and workplace productivity initiaitves, innovation has come to the fore as a key goal and directive for public sector organisations to become more efficient. This clarion call for innovation can be heard all around the world, with public services everywhere taking up the message to develop better, smarter, novel, more innovative processes, programs and policies. In the current push for innovation, networks are considered to be a superior vehicle through which collective knowledge can be shared and leveraged; replacing or at least supplementing the role function previously provided by inventive leaders...

Shortening cemented femoral implants. An in vitro investigation to quantify exeter femoral implant rotational stability vs simulated implant length

The Exeter stems vary in length from 90 to 150 mm. The shorter stems generally have lower offsets. The purpose of this study was to determine if length of stem, with fixed offset, affected rotational stability. Mechanical testing was carried out on 10 implant-cement constructs with 2 loading profiles, rising from chair and stair climbing, at different simulated implant lengths using purpose-built apparatus. This paper presents a mechanism for clinically observed rotational stability and explains the mechanical characteristics required for rotational stability in Exeter femoral stems. © 2012.

Back to the future : prohibiting surrogacy for singles, same-sex and shorter-term heterosexual couples in Queensland

This article considers the regulatory position concerning altruistic surrogacy in Queensland, focusing on the intended changes to the current legal framework announced by the government in June 2012. The previous government had made significant progress by reforming surrogacy laws in 2010. However, that progress is at risk of being reversed. The proposed changes to the law would make it a criminal offence to enter into an altruistic surrogacy arrangement for certain individuals or couples. If enacted, the offence would only apply in altruistic surrogacy cases where the intended parent or parents are either single, in a same-sex relationship, or are in a heterosexual relationship of less than two years. Moreover, if enacted, the offence would apply extra-territorially. The authors argue that these changes represent a retrograde step for the law and urge the government to reconsider. This is based on the fact that they are out of step with current social attitudes, are contrary to the spirit of anti-discrimination laws, and that they are unjustified in terms of child welfare concerns.

Overstepping the fiduciary mark

The decision of Justice Boddice in The Public Trustee of Queensland (as Litigation Guardian for ADF) v Ban & Anor is the latest in a series of Supreme Court actions arising out of Ms Ban’s management of the affairs of her long-time elderly friend, ADF. Following on from an earlier decision in which it was determined that Ms Ban held her share of funds in a joint bank account with ADF on trust for him, this most recent case concerned a claim for an account of funds withdrawn from that account on the basis that as trustee Ms Ban owed fiduciary duties to ADF. The purpose of the accounting was to determine whether any withdrawals had been made in breach of trust, which would give rise to equitable remedies. The primary question for determination was therefore whether the withdrawals were applied for the benefit of ADF. Having regard to all the circumstances of the case, his Honour found that although some transactions were for ADF’s benefit, substantial withdrawals, (including a significant portion of a $700,000 transfer), were not applied for his benefit, and were therefore made in breach of fiduciary obligation, giving rise to equitable rights and remedies.