Advanced fabric energy storage systems in Australia

There is a growing interest in the use of advanced fabric energy storage (FES) systems in Australia. The influence of slab thickness and ventilation rate on the annual thermal load, and maximum heating and cooling demands for an office module using a ventilated hollow core concrete slab system has been investigated by simulation. Airflow through the panels was set at 1, 2 or 4 air changes per hour (ACH) for slab thicknesses of 205, 220 and 300 mm. These configurations were simulated using two different FES operational strategies for six capital cities in mainland Australia. The simulations show that FES systems can offer either energy and/or peak load savings in almost all locations investigated. Overall, compared to a conventional AC system, the tempering of incoming fresh air combined with night flushing of the FES system appears to be the most successful operational strategy.

Improving infant sleep and maternal mental health: a cluster randomised trial

Objectives: To determine whether a community-delivered intervention targeting infant sleep problems improves infant sleep and maternal well-being and to report the costs of this approach to the healthcare system.

Design: Cluster randomised trial.

Setting: 49 Maternal and Child Health (MCH) centres (clusters) in Melbourne, Australia.

Participants: 328 mothers reporting an infant sleep problem at 7 months recruited during October–November 2003.

Intervention: Behavioural strategies delivered over individual structured MCH consultations versus usual care.

Main outcome measures: Maternal report of infant sleep problem, depression symptoms (Edinburgh Postnatal Depression Scale (EPDS)), and SF-12 mental and physical health scores when infants were 10 and 12 months old. Costs included MCH sleep consultations, other healthcare services and intervention costs.

Results: Prevalence of infant sleep problems was lower in the intervention than control group at 10 months (56% vs 68%; adjusted OR 0.58 (95% CI: 0.36 to 0.94)) and 12 months (39% vs 55%; adjusted OR 0.50 (0.31 to 0.80)). EPDS scores indicated less depression at 10 months (adjusted mean difference –1.4 (–2.3 to –0.4) and 12 months (–1.7 (–2.6 to –0.7)). SF-12 mental health scores indicated better health at 10 months (adjusted mean difference 3.7 (1.5 to 5.8)) and 12 months (3.9 (1.8 to 6.1)). Total mean costs including intervention design, delivery and use of non-MCH nurse services were £96.93 and £116.79 per intervention and control family, respectively.

Conclusions: Implementing this sleep intervention may lead to health gains for infants and mothers and resource savings for the healthcare system.

The effectiveness of seminars in educating adults in financial literacy

In Australia, financial literacy is not given prominence within the education system, and it is a general view that financial literacy is gained through ‘hands on’ experience in earning and spending money; further, financial education seems to occur only when people take a loan or experience financial difficulties (Hajaj, 2002). This is not sufficient if people need to make informed decisions about their investments and, because of a number of social factors, it has become necessary to educate the majority of the adult population in Australia in Financial Literacy over a relatively short period of time. Given the large numbers requiring such an education, the seminar approach is being widely used, however is it effective? Drawing on the adult education literature, this study examined the effectiveness of the seminar approach by surveying adult participants in a Financial Literacy seminar. The survey found that while a majority of participants (50%) expressed none or weak financial knowledge prior to attending the seminar and 45% expressed that they only had a moderate rate of financial knowledge, a majority of 63% strongly agreed or agreed to the seminar improving their knowledge of the need for retirement savings. Furthermore, 58% of participants were either confident or very confident of being able to apply what they learned in the seminar to achieving their retirement savings goal. These findings suggest that the seminar approach was effective in educating adults and improved their level of financial literacy. Future research could investigate whether the level of financial knowledge gained during the seminar is retained over a considerable period of time.

Geographic routing with cooperative relaying and leapfrogging in wireless sensor networks

A novel geographic routing protocol for multi-hop wireless sensor networks is presented. It exploits the broadcast nature of the wireless channel to enable on-demand cooperative relaying and leapfrogging for circumventing weak radio links. In order to achieve energy efficiency, a metric is introduced for next-hop selection that takes into account information on the residual battery energy, the geographical position of the sensor nodes, and the channel quality of the involved radio links when available. Performance results show that the completely decentralized protocol offers significant benefits by reducing the number of (re)transmissions required to reach the destination. This translates into network-wide energy savings that extend the network lifetime.

Questioning the future of paper and online survey questionnaires for management research

The way that we build the foundations of our intellectual capital in management has changed. One example is the steady move in management research from the use of traditional paper-based survey questionnaires to online technology-based formats. This paper considers this shift, particularly focusing on the question of whether the advantages of online survey questionnaires outweigh their potential problems. The historical use of paper-based survey questionnaires has produced a large body of literature on both the advantages and disadvantages in their use, which are reviewed here alongside those of online survey questionnaires. In addition, welI-tested methods are available for increasing survey response rates in paper format, and these should not be thrown out in the quest to utilise online survey methodology. Rather, researchers should aim to exploit the potential benefits of online technologies and increase response rate by thoughtfully combining traditional and new methods. This paper argues for further discussion and research attention on electronic methods of data collection to ensure potential cost savings are not outweighed by either financial or participation costs involved in online survey questionnaire design.

Integrating cost-effectiveness evidence into clincal practice guidelines in Australia for acute myocardial infarction

 A teaching hospital is working with the Victorian State Government and universities, integrating cost-effectiveness evidence into clinical practice guidelines (CPGs), protocols and pathways for respiratory and cardiology interventions. Acute myocardial infarction (AMI) findings are reported. Results will stimulate cost-effective practice and inform medical associations, federal and state governments and international organisations developing CPGs. Published CPGs by the American College of Cardiology/American Heart Foundation for AMI in 1999 are reviewed by a large interdis- ciplinary hospital-based committee given cost-effectiveness evidence. Levels of evi- dence criteria rating on methodological rigor for effectiveness and costs are applied. National Health and Medical Research Council (NHMRC) grades of recommendation criteria for combinations of relative effectiveness versus relative costs and cut-off points are used. Extrapolating results between countries was addressed by applying the OECD's health purchasing power parity series. Recommendations for revisions to United States guidelines and for local application are formulated. United States Guide- lines require updating: Regarding angioplasty, percutaneous transluminal coronary angioplasty (PTCA) is cost-effective for men aged 60 years relative to recombinant tissue plasminogen activator (tPA),with additional cost per life year saved of 274 ecu. PTCA with discharge after 3 days is cost-effective in low-risk AMI. Regarding GP llb/Illa drugs, Abciximab during intervention incurred equal mean hospital costs for placebabciximab bolus, and abciximab bolus+ infusion with incremental 6-month cost for the latter treatment costing US$ 293 per patient. Agent recouped almost all initial therapy costs with significant benefits. Incre- mental cost of abciximab per event prevent- ed is US$ 3,258.Tirofiban was compared to placebo after high-risk angioplasty for AMI or unstable angina.Tirofiban decreased the rate of hospital deaths, myocardial infarc- tion, revascularisation at 2 days by 36% relative to placebo (8% vs. 12%) without increased cost. Clinical benefits were similar at 30 days.Tirofiban+heparin+aspirin was compared to heparin+aspirin.Tirofiban arm resulted in net savings of 33,418 ecu per 100 patients for the first 7 days of treatment. Regarding thrombolytics,tPA is more cost- effective than streptokinase. Incremental costs for each life saved when streptokinase is substituted by recombinant tissue plasmi- nogen are 31%,45%, 97% higher in Germa- ny, Italy and the United States than in the United Kingdom. Regarding anticoagulants, enoxaparin is a promising alternative to unfractionated heparin for hospitalised patients with non-Q-wave myocardiai infarc- tion or unstable angina, saving C$ 1,485 per patient over 12 months with 10% reduction in 1 year risk of death, myocardial infarction or recurrent angina. Regarding anti- arrhymics, the cost-effectiveness of no amiodarone, amiodarone for patients with depressed heart rate variability (DHRV),and amiodarone for patients with DHRV plus positive programmed ventricular stimula- tion (PPVS) for high-risk post-AMI was investigated. Amiodarone for DHRV+PPVS patients was dominated by a blend of the two alternatives. Compared to no amioda- rone, the incremental cost-effectiveness of amiodarone for DHRV patients was US$ 39,422 per quality adjusted life year gained. Amiodarone for DHRV is the most appropriate. Other CPG updates concern serum markers, for example, cardiac troponin I assay (c-Tnl), cost advantages of ad hoc angioplasty and secondary prevention through antioxidants and pravastatin. Australian costs are reported later in the paper.

Compressive properties and energy absorption of hollow sphere aluminium

Manufactured cellular aluminums have been developed for a wide range of automotive applications where weight savings, improved safety, crashworthiness and comfort are required. The plateau deformation behavior of cellular aluminums under compressive loading makes this new class of lightweight materials suitable for energy absorption and comes close to ideal impact absorbers. In the present study, aluminum hollow hemispheres were firstly processed by pressing. Hollow sphere aluminum samples with a body-centered cubic (BCC) packing were then fabricated by bonding together single hollow spheres, which were prepared by adhering together hollow hemispheres. Hollow sphere aluminum samples with various kinds of sphere wall thicknesses of 0.1 mm, 0.3 mm and 0.5 mm but the same outside diameter of 4 mm were investigated by compressive tests. The effects of the sphere wall thickness on the mechanical properties and energy absorption characteristics were investigated.

To choose or not to choose: exploring Australians` views about internet banking

This paper explores Australian domestic customers' choices with regard to Internet banking, examining why it is taken up by some Australians and not others. The constructivist conceptual framework and the grounded nature of the method enabled in-depth exploration of key issues not undertaken before by the mainly positivist studies. The purposeful sample of 32 participants was selected to represent the major categories of people relevant to the research. Everett Rogers' famous analysis of 'diffusion of innovations' was one theoretical framework used to illuminate the findings; the other was digital divide factors in relation to banking choices. The findings include 1) that the major motivation for people to adopt Internet banking is convenience, closely linked to time savings and ease of accessibility, as well as confidence and skill in Internet use; and 2) that, at the time of the study, digital divide factors were playing an important part in banking choices.

The effectiveness of the levonorgestrel-releasing intrauterine system in menorrhagia: a systematic review

Objective: To determine whether the levonorgestrel-releasing intrauterine device (LNG-IUS), licensed at present for contraceptive use, may reduce menstrual blood loss with few side effects. If effective, surgery could be avoided with consequent resource savings. Methods: A systematic review addressing the effectiveness and cost effectiveness of the LNG-IUS for menorrhagia was undertaken. Results: Five controlled trials and five case series were found which measured menstrual blood loss. Nine studies recorded statistically significant average menstrual blood loss reductions with LNG-IUS (range 74%–97%). Another showed reduction in menstrual disturbance score. The LNG-IUS was more effective than tranexamic acid, but slightly less effective than endometrial resection at reducing menstrual blood loss. In one study, 64% of women cancelled surgery at six months, compared with 14% of control group women. In another, 82% were taken off surgical waiting lists at one year. No cost effectiveness studies were found. Discussion: Small studies of moderate quality indicate the LNG-IUS is an effective treatment for menorrhagia. Costs may be less than for tranexamic acid in primary and secondary care. Although its use may reduce surgical waiting lists, cost effectiveness assessment requires longer follow up. Conclusion: Effectiveness and cost effectiveness relative to other treatments and the effect on surgical waiting lists can only be established in larger trials measuring patient-centred outcomes in women with menorrhagia.

Making long-term economic growth more sustainable: evaluating the costs and benefits

Currently, traditional development issues such as economic stagnation, poverty, hunger, and illness as well as newer challenges like environmental degradation and globalisation demand attention. Sustainable development, including its economic, environmental and social elements, is a key goal of decisionmakers. Optimal economic growth has also been a crucial goal of both development theorists and practitioners. This paper examines the conditions under which optimal growth might be sustainable, by assessing the costs and benefits of growth. Key environmental and social aspects are considered. The Ecol-Opt-Growth-1 model analyses economic–ecological interactions, including resource depletion, pollution, irreversibility, other environmental effects, and uncertainty. It addresses some important issues, including savings, investment, technical progress, substitutability of productive factors, intergenerational efficiency, equity, and policies to make economic growth more sustainable—a basic element of the sustainomics framework. The empirical results support growing concerns that costs of growth may outweigh its benefits, resulting in unsustainability. Basically, in a wide range of circumstances, long term economic growth is unsustainable due to increasing environmental damage. Nevertheless, the model has many options that can be explored by policy makers, to make the development path more sustainable, as advocated by sustainomics. One example suggests that government supported abatement programs are needed to move towards sustainable development, since the model runs without abatement were infeasible. The optimal rate of abatement increases over time. Abatement of pollution is necessary to improve ecosystem viability and increase sustainability. Further research is necessary to seek conditions under which alternative economic growth paths are likely to become sustainable.

Information security standards for e-business

The process of buying, selling or interacting with customers via Internet, Tele-sale, Smart card or other computer network is referred to as Electronics Commerce. Whereas online trade has been touting its flexibility, convenience and cost savings, the newest entrant is wireless e-commerce. This form of business offers many attractions; including 24 hours seven days’ open shop–business, vastly reduced fixed cost, and increased profitability. Amazon.com is an example of a successful venture, in e-business. Internet Service providers (ISP/ASP) have a significant influence on the feasibility, security and cost competitiveness of an e-business venture. In the ISP model of services, multiple users and their databases are normally offered on a single hardware, platform sharing the same IP address and Domain name. Clients will require a mechanism, which allows them to update their Web contents and databases frequently even many times daily without intervention of local system Administrator (ISP Admin). The paper overviews few steps to enable corporate clients to update their web content more securely.

Outsourcing in the Australian health sector : the interplay of economics and politics

Purpose – The paper discusses the reasons and approaches used at three health organisations in introducing outsourcing. It specifically answers the question: why have managers of health organisations outsourced some functions in preference to others?

Design/methodology/approach – This research employs a case study method making use of qualitative analysis. The health organisations were chosen first as representatives of their type, and secondly due to the nature of the outsourcing decisions made. The first health organisation operates in the rural sector; the second is a metropolitan network; and the third is a large metropolitan hospital, which, in contrast to the other two case study organisations, had made only one decision to outsource, producing the largest outsourcing contract in health in Australia. Furthermore, this situation was distinctive as the contract was terminated and re-issued to another private sector organisation.

Findings – The reasons for outsourcing varied within and between health organisations. Although generally they were made on the bases of the characteristics of the labour market, employee skill levels and the nature of industrial relations, the perception of what was core, the level of internal management skills, the ability of internal teams to implement change and the relationship between management and staff. Even though cost savings and a downsized labour force resulted, generally these occurred even when services were not outsourced, through the use of other change processes, such as introducing new technology, changing structures and promoting workforce flexibility. The interplay of political reasons and economic effects was evident along with the political nature of the decision-making and processes used. The paper concludes that the power of managers was a moderating factor between the desire for outsourcing and whether outsourcing actually occurred.

Research limitations/implications – Although this research was conducted solely within the health sector it has implications for other public sector bodies and the private sector.

Practical implications – Managerial decision making can be enhanced with the exploration of the full complement of reasons for the outsourcing decision.

Originality/value – The paper has value to both academics researching in the public sector and public sector managers.

Solar versus fossil fuels : A net energy analysis of domestic solar hot water systems in Australia

It is commonly assumed that solar hot water systems save energy and reduce greenhouse gas emissions compared to conventional electric and gas hot water systems. Very rarely has the life-cycle energy requirements (including the embodied energy of manufacture) of solar hot water systems been analysed. The extent to which solar hot water systems can save energy compared to conventional electric or gas hot water systems can be shown through a comparative net energy analysis. This method determines the ‘energy payback period’, including consideration of the difference in operational energy savings and energy embodied in the devices relative to a base case. Dr Robert Crawford, Deakin University, Australia presents the results of a net energy analysis that compared solar and conventional hot water systems for a southern (Melbourne) and a northern (Brisbane) Australian climate.

Flexible delivery and student attrition in the vocational education and training sector: case studies of students who dropped out

Government policy in Australia is increasingly encouraging training organisations in the Vocational Education and Training (VET) sector to adopt flexible delivery approaches. This policy shift is supported by key VET stakeholders including Industry Training Advisory Boards. A recurring theme in VET policy documents is an apparent confidence that flexible delivery can meet the diverse needs of individual learners while at the same time providing cost savings. Yet evidence is emerging that Australian VET learners are not typically ready for flexible delivery, and this lack of readiness is reflected in high attrition rates and low pass rates in many flexibly delivered courses. One research project found that over 70% of learners in the Australian VET sector do not have the learning capabilities required to be ready for flexible delivery. A recent review of the module outcomes achieved by VET students nationally found that students studying by external/correspondence and self-paced unscheduled modes had lower module completion rates than students studying by other delivery strategies.

Research on student progress in flexible delivery within the Australian VET sector has largely been quantitative. That research provides useful statistical data on completion and attrition rates for various modes of delivery, but does not explore the reasons underlying the high attrition rates found in flexible delivery. The qualitative research that is available tends to focus on students who successfully complete their courses, not on those who withdraw. As a result, the Australian literature on flexible delivery in the VET sector is lacking in-depth qualitative information about students who enrol in courses but do not complete. In comparison, the broader literature on distance education and flexible delivery in other educational sectors offers some useful insights into student attrition, and can be can be used to inform research into attrition within the Australian VET sector.

This paper reports on aspects of a research project that followed up six adult learners who enrolled in VET courses but who either failed assessment or withdrew. The research project presented the students’ stories in the form of narrative case studies, focussing on the detailed examination of the barriers that each student experienced, and analysing these barriers in relation to issues raised in the literature. This paper reports on two particular themes that emerged from that research project. The literature on distance education and flexible delivery argues that:


· student dropout is often not determined by a single factor, but by the interaction of a number of factors that build up over time;

· students who experience difficulties when studying by flexible delivery can often be reluctant to access the support that is available to them.

This paper uses these themes as a point of reference in presenting the stories of some of the students who participated in the research project.

Digitisation and copyright compliance for course materials and library reserve materials at Deakin University

A digitisation effort employed by Deakin University Library has proven to be of great benefit to its distance and lifelong learners. This paper discusses issues involved with digitisation and copyright compliance issues associated with producing electronic information resources made available to distance and lifelong learners at Deakin University. The authors discus the balance between print and e-reserves, the differences in course-pack content and electronic reserves and the copyright compliance issues that regulate fair access. Budgetary concerns, in terms of staff time, computer equipment were weighed to determine efficiency. The project was carried out in several phases, beginning with the digitisation of class notes, exams, class presentations, and finally with the materials covered within copyright regulations. A respective project would complete the project. It was found that there was a significant financial savings in the digitisation of electronic reserves, yet the main goal was to better serve the remote user with enhanced access. Relevant screenshots and bibliography are included. M. Thomas.