Utilization of organic matter by invertebrates along an estuarine gradient in an intermittently open estuary

In intermittently open estuaries, the sources of organic matter sustaining benthic invertebrates are likely to vary seasonally, particularly between periods of connection and disconnection with the ocean and higher and lower freshwater flows. This study investigated the contribution of allochthonous and autochthonous primary production to the diet of representative invertebrate species using stable isotope analysis (SIA) during the austral summer and winter (2008, 2009) in an intermittently open estuary on the south-eastern coast of Australia. As the study was conducted towards the end of a prolonged period of drought, a reduced influence of freshwater/terrestrial organic matter was expected. Sampling was conducted along an estuarine gradient, including upper, middle and lower reaches and showed that the majority of assimilated organic matter was derived from autochthonous estuarine food sources. Additionally, there was an input of allochthonous organic matter, which varied along the length of the estuary, indicated by distinct longitudinal trends in carbon and nitrogen stable isotope signatures along the estuarine gradient. Marine seaweed contributed to invertebrate diets in the lower reaches of the estuary, while freshwater/terrestrial organic matter had increased influence in the upper reaches. Suspension-feeding invertebrates derived large parts of their diet from freshwater/terrestrial material, despite flows being greatly reduced in comparison with non-drought years.

Stakeholders' perceptions of the benefit of introducing an Australian intermediary system for vulnerable witnesses

Vulnerable witnesses (e.g. children and adults with communication impairment) face many barriers to testifying and achieving justice when participating in the criminal justice system. To date, reforms have been implemented in Australia to address these, yet the barriers remain. Several other countries have implemented an intermediary scheme, whereby an independent third party assists vulnerable witnesses to understand the questions and processes encountered during interviews and trials, and helps witnesses to be understood. This study provides a qualitative analysis of stakeholders' (N = 25 professionals) perceptions regarding the potential benefits of implementing an intermediary scheme in Australia. While all participants demonstrated an open-minded attitude to new reform in this area, their perspectives did not support the introduction of an intermediary scheme at this time. Stakeholders highlighted the need for improved use and effectiveness of current measures, and expressed concern about adding further complication to the system.

Cyber security and protection of ICS systems: An australian example

Many aspects of our modern society now have either a direct or implicit dependence upon information technology. As such, a compromise of the availability or integrity in relation to these systems (which may encompass such diverse domains as banking, government, health care, and law enforcement) could have dramatic consequences from a societal perspective. These key systems are often referred to as critical infrastructure. Critical infrastructure can consist of corporate information systems or systems that control key industrial processes; these specific systems are referred to as ICS (Industry Control Systems) systems. ICS systems have devolved since the 1960s from standalone systems to networked architectures that communicate across large distances, utilise wireless network and can be controlled via the Internet. ICS systems form part of many countries’ key critical infrastructure, including Australia. They are used to remotely monitor and control the delivery of essential services and products, such as electricity, gas, water, waste treatment and transport systems. The need for security measures within these systems was not anticipated in the early development stages as they were designed to be closed systems and not open systems to be accessible via the Internet. We are also seeing these ICS and their supporting systems being integrated into organisational corporate systems.

Is it art or knowledge? Deconstructing Australian Aboriginal creative making

Abstract Australian Aboriginal symbols are visual forms of knowledge that express cultural intellect. Being classified by a Western interpretation of “art” devalues thousands of years of generational knowledge systems, where visual information has been respected, appreciated and valued. This article highlights how Aboriginal creativity has little concept of aesthetical value, but is a cultural display of meaning relating to Creational periods, often labelled as The Dreamings. With over 350 different Aboriginal Nations in Australia, this article focuses of the Dharug Nation, located around the northern Sydney area of New South Wales. The Dharug term for the Creational period is Gunyalungalung—traditional ritualized customary lores (laws). These symbols are permanently located within the environment on open rock surfaces, caves and markings on trees. Whilst some symbols are manmade, others are made by Creational ancestral beings and contain deep story lines of information in sacredness. Therefore, creative imagery engraved or painted on rock surfaces are forms of conscious narratives that emphasise deep insight.Keywords: Aboriginal Art; Australia; visual knowledge; culture; traditional; symbols

The new Keynesian Phillips curve in a small open economy: empirical evidence from Australia

This study estimates the new Keynesian Phillips curve (NKPC) ofGali and Monacelli for a small open economy using Australian data.Our detailed investigation hinges on estimating the structuralparameters in five different variants of the Gali–Monacelli NKPC,which relates the inflation process to terms of trade and the realexchange rate; the marginal cost and output gap as proxies for realeconomic activity and the hybrid version incorporating bothforward- and backward-looking inflation expectations. The analysisand extensive robustness checks overwhelmingly establish that theGali–Monacelli NKPC cannot explain the dynamics of inflation andis rejected by the Australian data.

Kinanthropometric differences between 1997 World championship junior elite and 2011 national junior elite triathletes

OBJECTIVES: In 1997, anthropometry measures were made to determine the body size and shapes of both senior and junior elite triathletes. Since then, the junior event distance has changed and the optimal morphology of participants may have evolved. Thus the objective of this study was to compare the morphology of 1997 World championship junior elite triathlon competitors with junior elite competitors in 2011. DESIGN: Comparative study of junior elite triathlete kinanthropometry. METHODS: Twenty-nine males and 20 females junior elite competitors in the 1997 Triathlon World Championships underwent 26 anthropometric measurements. Results were compared with 28 male and 14 female junior elite triathletes who competed in the 2011 Australian National Junior Series, as qualifying for 2011 Triathlon World Championships. Comparisons were made on the raw scores, as well as somatotype, and body proportional scores. RESULTS: Both male and female junior elite triathletes in the 2011 group were significantly more ectomorphic than their 1997 counterparts. The 2011 triathletes were also proportionally lighter, with significantly smaller flexed arm and thigh girths, and femur breadths. The 2011 males recorded significantly longer segmental lengths and lower endomorphy values than the 1997 junior males. CONCLUSIONS: Junior elite triathlete morphology has evolved during the past 14 years possibly as a result of changing race distance and race tactics, highlighting the importance of continually monitoring and updating such anthropometric data.

Ensuring cultural sensitivity for Muslim patients in the Australian ICU: considerations for care

Australia is a diverse and multicultural nation, made up of a population with a predominant Christian faith. Islam, the second largest religion in the world, has demonstrated significant growth in Australia in the last decade. Coming from various countries of origin and cultural backgrounds, Muslim beliefs can range from what is considered ‘traditional’ to very ‘liberal’.

It is neither possible nor practical for every intensive care clinician to have an intimate understanding of Islam and Muslim practices, and cultural variations amongst Muslims will mean that not all beliefs/practices will be applicable to all Muslims. However, being open and flexible in the way that care is provided and respectful of the needs of Muslim patients and their families is essential to providing culturally sensitive care.

This discussion paper aims to describe the Islamic faith in terms of Islamic teachings, beliefs and common practices, considering how this impacts upon the perception of illness, the family unit and how it functions, decision-making and care preferences, particularly at the end of life in the intensive care unit.

Robot-assisted laparoscopic prostatectomy versus open radical retropubic prostatectomy: early outcomes from a randomised controlled phase 3 study

BACKGROUND: The absence of trial data comparing robot-assisted laparoscopic prostatectomy and open radical retropubic prostatectomy is a crucial knowledge gap in uro-oncology. We aimed to compare these two approaches in terms of functional and oncological outcomes and report the early postoperative outcomes at 12 weeks. METHOD: In this randomised controlled phase 3 study, men who had newly diagnosed clinically localised prostate cancer and who had chosen surgery as their treatment approach, were able to read and speak English, had no previous history of head injury, dementia, or psychiatric illness or no other concurrent cancer, had an estimated life expectancy of 10 years or more, and were aged between 35 years and 70 years were eligible and recruited from the Royal Brisbane and Women's Hospital (Brisbane, QLD). Participants were randomly assigned (1:1) to receive either robot-assisted laparoscopic prostatectomy or radical retropubic prostatectomy. Randomisation was computer generated and occurred in blocks of ten. This was an open trial; however, study investigators involved in data analysis were masked to each patient's condition. Further, a masked central pathologist reviewed the biopsy and radical prostatectomy specimens. Primary outcomes were urinary function (urinary domain of EPIC) and sexual function (sexual domain of EPIC and IIEF) at 6 weeks, 12 weeks, and 24 months and oncological outcome (positive surgical margin status and biochemical and imaging evidence of progression at 24 months). The trial was powered to assess health-related and domain-specific quality of life outcomes over 24 months. We report here the early outcomes at 6 weeks and 12 weeks. The per-protocol populations were included in the primary and safety analyses. This trial was registered with the Australian New Zealand Clinical Trials Registry (ANZCTR), number ACTRN12611000661976. FINDINGS: Between Aug 23, 2010, and Nov 25, 2014, 326 men were enrolled, of whom 163 were randomly assigned to radical retropubic prostatectomy and 163 to robot-assisted laparoscopic prostatectomy. 18 withdrew (12 assigned to radical retropubic prostatectomy and six assigned to robot-assisted laparoscopic prostatectomy); thus, 151 in the radical retropubic prostatectomy group proceeded to surgery and 157 in the robot-assisted laparoscopic prostatectomy group. 121 assigned to radical retropubic prostatectomy completed the 12 week questionnaire versus 131 assigned to robot-assisted laparoscopic prostatectomy. Urinary function scores did not differ significantly between the radical retropubic prostatectomy group and robot-assisted laparoscopic prostatectomy group at 6 weeks post-surgery (74·50 vs 71·10; p=0·09) or 12 weeks post-surgery (83·80 vs 82·50; p=0·48). Sexual function scores did not differ significantly between the radical retropubic prostatectomy group and robot-assisted laparoscopic prostatectomy group at 6 weeks post-surgery (30·70 vs 32·70; p=0·45) or 12 weeks post-surgery (35·00 vs 38·90; p=0·18). Equivalence testing on the difference between the proportion of positive surgical margins between the two groups (15 [10%] in the radical retropubic prostatectomy group vs 23 [15%] in the robot-assisted laparoscopic prostatectomy group) showed that equality between the two techniques could not be established based on a 90% CI with a Δ of 10%. However, a superiority test showed that the two proportions were not significantly different (p=0·21). 14 patients (9%) in the radical retropubic prostatectomy group versus six (4%) in the robot-assisted laparoscopic prostatectomy group had postoperative complications (p=0·052). 12 (8%) men receiving radical retropubic prostatectomy and three (2%) men receiving robot-assisted laparoscopic prostatectomy experienced intraoperative adverse events. INTERPRETATION: These two techniques yield similar functional outcomes at 12 weeks. Longer term follow-up is needed. In the interim, we encourage patients to choose an experienced surgeon they trust and with whom they have rapport, rather than a specific surgical approach. FUNDING: Cancer Council Queensland.

Book review: 'Neo-mateship' in the 21st century : changes in the performance of Australian masculinity. Karina J. Butera, Deakin University 2008.

This article argues that 'traditional mateship', as the everyday practice of men's same-sex friendships, is a dying mode of relating in Australian culture. Using Goffman's dramaturgical model, the views of three generations of men are used to qualitatively explore three proposed sites of transformation in men's same-sex friendships. First, the shift from unquestioning group loyalty to individualistic, transient and contingent relationship choice; second, the move from guarded levels of disclosure to open expressiveness and willingness to display vulnerability; and finally the evolution from expecting and giving only practical support to providing both practical and emotional support. The narratives of the middle-aged cohort are used to illustrate the various role-distance strategies that were used to resist and rework gender scripts. The article concludes that, although the parameters of acceptable gendered behaviours in Australian men's friendships are expanding, they have not yet reached the breadth and depth found in 'pure' friendships, but could be described as a new type of mateship: neo-mateship.

An aggravated trajectory of depression and anxiety co-morbid with Hepatitis C: a within-groups study of 61 Australian outpatients.

BACKGROUND: This study aimed to explore the course of depression and anxiety in chronic hepatitis C patients. METHODS:   Data were combined from two studies: (1) Hospital Anxiety and Depression Scale (HADS) scores in 395 consecutive Australian outpatients from 2006 to 2010 formed the baseline measurement; and (2) Depression Anxiety Stress Scales (DASS) scores in a survey of a sub-sample of these patients in 2011 formed the follow-up measurement. After converting DASS to HADS scores, changes in symptom scores and rates of case-ness (≥8), and predictors of follow-up symptoms were assessed. RESULTS:   Follow-up data were available for 61 patients (70.5% male) whose age ranged from 24.5 to 74.6 years (M=45.6). The time to follow-up ranged from 20.7 to 61.9 months (M=43.8). Baseline rates of depression (32.8%) and anxiety (44.3%) increased to 62.3% and 67.2%, respectively. These findings were confirmed, independent of the conversion, by comparing baseline HADS and follow-up DASS scores with British community norms. Baseline anxiety and younger age predicted depression, while baseline anxiety, high school non-completion, and single relationship status predicted anxiety. CONCLUSION:  This study demonstrated a worsening trajectory of depression and anxiety. Further controlled and prospective research in a larger sample is required to confirm these findings.