Load Adapted Solar Thermal Combisystems - Optical Analysis and Systems Optimization

In a northern European climate a typical solar combisystem for a single family house normally saves between 10 and 30 % of the auxiliary energy needed for space heating and domestic water heating. It is considered uneconomical to dimension systems for higher energy savings. Overheating problems may also occur. One way of avoiding these problems is to use a collector that is designed so that it has a low optical efficiency in summer, when the solar elevation is high and the load is small, and a high optical efficiency in early spring and late fall when the solar elevation is low and the load is large.The study investigates the possibilities to design the system and, in particular, the collector optics, in order to match the system performance with the yearly variations of the heating load and the solar irradiation. It seems possible to design practically viable load adapted collectors, and to use them for whole roofs ( 40 m2) without causing more overheating stress on the system than with a standard 10 m2 system. The load adapted collectors collect roughly as much energy per unit area as flat plate collectors, but they may be produced at a lower cost due to lower material costs. There is an additional potential for a cost reduction since it is possible to design the load adapted collector for low stagnation temperatures making it possible to use less expensive materials. One and the same collector design is suitable for a wide range of system sizes and roof inclinations. The report contains descriptions of optimized collector designs, properties of realistic collectors, and results of calculations of system output, stagnation performance and cost performance. Appropriate computer tools for optical analysis, optimization of collectors in systems and a very fast simulation model have been developed.

Development, implementation, and evaluation of a continence education package in acute and subacute care settings

OBJECTIVE: The objective of the study was to trial and evaluate the effect that a discharge Continence Education Package (CEP) had on patients' continence awareness and management preferences.
DESIGN: An exploratory descriptive design was used.
SETTINGS AND SUBJECTS: A total of 631 participants were included in the study: 352 females (55.8%) and 279 males (44.2%) from 4 rural and regional settings in Victoria, Australia.
INSTRUMENTS AND METHODS: A specifically designed questionnaire was used to assess participants' knowledge of incontinence and its management and also to investigate their treatment preferences and intentions if they experienced this type of problem. Data were collected at 2 time periods. Specifically, patients were interviewed before discharge from acute and subacute settings identified as Time 1 (T1). Then the participants were given the CEP and asked to complete a similar questionnaire.
RESULTS: The findings revealed that fewer than 25% of participants had received information on continence before the study being conducted, yet the majority had indicated that they had experienced continence symptoms. The majority of participants found the CEP easy to understand (98.2%) and helpful (95.3%). Most participants said it provided them with information about types of actions to take and/or treatment options for incontinence problems. It also raised their awareness of the signs and symptoms associated with incontinence and provided them with a useful self-administered gauge with which to assess their continence status.
CONCLUSIONS: These findings suggest that the CEP may be a useful educational tool for use in the general population.

Evaluating health promotion in schools: a case study of design, implementation and results from the Hong Kong Healthy Schools Award Scheme

Health promoting schools (HPS) and Healthy Schools Award Schemes from a number of countries have demonstrated positive changes in children’s health behaviours and the culture and organisation of the school. The Hong Kong Healthy Schools Award Scheme (HKHSA) aims to promote staff development, parental education, involvement of the whole school community, and linkage with different stakeholders to improve the health and well-being of the pupils, parents and staff, and the broader community, supported by a system to monitor the achievement. This concept is very much in line with the research literature on school effectiveness and improvement. The indicators examined to evaluate the success of the HKHSA reflect outcomes related to both health and education and are not limited to changes in population health status. The early results demonstrated significant improvements in various aspects of student health and also improvement in school culture and organisation. The evaluation framework described in this paper and data collected to assess how schools perform in the HKHSA scheme, provides insight into how HPSs could lead to better outcomes for both education and health.

Policy, preparation, prevention and punishment: one faculty's holistic approach to minimising plagiarism

Most Australian universities have made attempts of various kinds to address plagiarism. Some have responded in recent times with a primary focus on catching and punishing plagiarists, often assisted by computer software packages. Others have taken a more holistic approach incorporating foci on policy, assessment regime and student preparation and education as well as on ensuring appropriate consequences for plagiarists. This paper outlines one example of the latter approach in one Australian university faculty and details the outcomes in terms of policy recommendations and resources to support the approach. The necessity of evidence-based evaluation of attempts to reduce plagiarism in higher education is argued.

Molecular recognition of DNA by rigid [n]-polynorbornane-derived bifunctional intercalators: synthesis and evaluation of their binding properties

We have exploited the concept of multivalency in the context of DNA recognition, using novel chemistry to synthesize a new type of bis-intercalator with unusual sequence-selectivity. Bis-intercalation has been observed previously, but design principles for de novo construction of such molecules are not known. Our compounds feature two aromatic moieties projecting from a rigid, polynorbornane-based scaffold. The length and character of the backbone as well as the identity of the intercalators were varied, resulting in mono- or divalent recognition of the double helix with varying affinity. Our lead compound proved to be a moderately sequence-selective bis-intercalator with an unwinding angle of 27 and a binding constant of about 8 M. 9-Aminoacridine rings were preferred over acridine carboxamides or naphthalimides, and a rigid [3]-polynorbornane scaffold was superior to a [5]-polynorbornane. The flexibility of the linker connecting the rings to the scaffold, although less influential, could affect the strength and character of the DNA binding.

Developing business community portals for SMEs-Issues of design, development and sustainability

Governments worldwide are using funding initiatives to encourage small businesses to adopt e-commerce technology. In Australia both State and Federal Governments have encouraged e-commerce uptake through the funding of Internet portal developments that have a specific community or business focus. The success of such portals, as with many Web developments, has been mixed and there is little evidence of any evaluation of the effectiveness of such investments. This paper reports on research into an Australian B2B business community portal from launch to closure. A survey and in-depth interviews with portal participants were undertaken. The research sought to understand how the portal had been developed, and what factors may have contributed to its demise. The findings identified a number of factors, not discussed in the literature, that are important in portal development. These include: how the development process is undertaken; technological readiness of the small business owners; meeting business expectations; and understanding the business community stakeholders. The results from this study suggest that portal projects such as this are problematic and funding bodies such as governments need to understand the factors that contribute to success before funds are committed.

Press shop machine analysis and trending

Historically downtime data collection and reporting systems in many automotive body panel press shops has been somewhat adhoc. The impetus for this study stems from frustration in respect of how this data is collected, assessed for trends and presented. Ideally this data should be used to identify costly repetitious faults for actioning of maintenance work and for feedback to tool design for consideration when designing new parts.

Presently this data is stored largely in the form of tacit knowledge by press shop operators; the encumbrance of transferring such information being that there is very often only limited channels to quantify it into something more tangible. Findings show that there tend to be two related obstacles to plant data recording. The first is that automation of down time data collection alone cannot determine fault causes as the majority of press shop events are initiated primarily from operator observation. The second is that excessive subjective operator input can often result in confusion and end up taking greater time in recording than remedying the actual fault.

This Paper presents the development of a system that through press mounted touchscreens encourages basic subjective operator input and relates this with basic objective data such as timekeeping. In this way all responses for a given press line become valuable and can be trended and placed in a hierarchy based on their percentage contribution to downtime or statistical importance. This then is capable of statistically alerting maintenance, line flow and/or toolbuild areas as to what issues require their most urgent attention.

The Health Education Impact Questionnaire (heiQ): An outcomes and evaluation measure for patient education and self-management interventions for people with chronic conditions

Objective: This paper describes the development and validation of the Health Education Impact Questionnaire (heiQ). The aim was to develop a user-friendly, relevant, and psychometrically sound instrument for the comprehensive evaluation of patient education programs, which can be applied across a broad range of chronic conditions.

Methods: Item development for the heiQ was guided by a Program Logic Model, Concept Mapping, interviews with stakeholders and psychometric analyses. Construction (N = 591) and confirmatory (N = 598) samples were drawn from consumers of patient education programs and hospital outpatients. The properties of the heiQ were investigated using item response theory and structural equation modeling.

Results: Over 90 candidate items were generated, with 42 items selected for inclusion in the final scale. Eight independent dimensions were derived: Positive and Active Engagement in Life (five items, Cronbach's alpha (α) = 0.86); Health Directed Behavior (four items, α = 0.80); Skill and Technique Acquisition (five items, α = 0.81); Constructive Attitudes and Approaches (five items, α = 0.81); Self-Monitoring and Insight (seven items, α = 0.70); Health Service Navigation (five items, α = 0.82); Social Integration and Support (five items, α = 0.86); and Emotional Wellbeing (six items, α = 0.89).

Conclusion:The heiQ has high construct validity and is a reliable measure of a broad range of patient education program benefits.

Practice Implications: The heiQ will provide valuable information to clinicians, researchers, policymakers and other stakeholders about the value of patient education programs in chronic disease management.

Review of prevalence data in, and evaluation of methods for cross cultural adaptation of, UK surveys on tobacco and alcohol in ethnic minority groups

Objective To assess the adequacy of cross cultural adaptations of survey questions on self reported tobacco and alcohol consumption in the United Kingdom.

Design Assessment of consistency of data between studies identified through literature review. Studies evaluated with 12 guidelines developed from the research literature on achieving cross cultural comparability.

Results The literature review identified 18 key studies, five of them on national samples. Survey instruments were obtained for 15 of these. The comparison of prevalence data in national surveys showed some important discrepancies, greater for tobacco than for alcohol. For example, prevalence of cigarette smoking in Bangladeshi women was 6% in a national survey in 1994 and 1% in a national survey in 1999; in Chinese men it was 31% in a survey in 1993-4 and 17% in one in 1999; in African-Caribbean men it was 29% in a 1992 survey and 42% in one in 1993-4. The most guidelines met by any study was three, although one study partly met a fourth. Two studies met no guidelines. Only four studies consulted with ethnic minority communities in developing the questionnaire, none checked each language version with all others, and two stated the questionnaire had not been validated.

Conclusions Surveys have not followed best practice in relation to measurement of risk factors in cross cultural settings. There is inconsistency in the prevalence data on smoking provided by different major national UK studies. Users of such data should be aware of their limitations. Research is needed to help achieve linguistic equivalence of survey questions in cross cultural research.

Answering back to policy? Headteachers’ stress and the logic of the sympathetic interview

Headteacher workloads are often in the news. Long hours, punitive audit regimes and excessive amounts of paperwork take their toll on many, including John Illingworth, former National Union of Teachers (UK) President, and ex primary headteacher. In this paper, I investigate a UK BBC Radio 4 human interest interview conducted with Illingworth by the usually acerbic John Humphrys. Mobilising Bourdieu’s notion of field, I examine the interview and argue that the analysis suggests that the media game of market share and the doxa of the fourth estate might work to delimit the capacity of such interviews to speak truth to policy power.

Haptically enable interactive virtual assembly training system development and evaluation

Virtual training systems are attracting paramount attention from the manufacturing industries due to their potential advantages over the conventional training practices. Significant cost savings can be realized due to the shorter times for the development of different training-scenarios as well as reuse of existing designed engineering (math) models. In addition, use of computer based virtual reality (VR) training systems can shorten the time span from computer aided product design to commercial production due to non-reliance on the hardware parts for training. Within the aforementioned conceptual framework, a haptically enabled interactive and immersive virtual reality (HIVEx) system is presented. Unlike existing VR systems, the presented idea tries to imitate real physical training scenarios by providing comprehensive user interaction, constrained within the physical limitations of the real world. These physical constrains are imposed by the haptics devices in the virtual environment. As a result, in contrast to the existing VR systems that are capable of providing knowledge generally about assembly sequences only, the proposed system helps in cognitive learning and procedural skill development as well, due to its high physically interactive nature.

Can you teach all of the people some of the time? The development and evaluation of information literacy programs at the University of Queensland Library

Information skills and computer literacy are now seen by many within the academic community as essential. They are key graduate attributes required by students for lifelong learning and leadership roles in business and industry, government and society. Trends in the higher education sector bringing a renewed focus to teaching and preparing students for a global knowledge economy are outlined.

This paper focuses upon the power of a teaching and learning policy framework which supports the integration of information literacy into the curriculum. The increasing ease with which collaborative partnerships are formed between academic planners, course coordinators and librarians is highlighted by case studies of successful programs. Challenges are identified and change strategies described.

Design and construction of a micropump for drug delivery applications

This paper presents design, construction, and evaluation of a micropump for drug delivery applications. The proposed micropump consists of three components: fluidics, electronics, and software. The fluidics component includes a silicone elastic diaphragm, a microservo, housing and two check valves. The diaphragm is modeled and simulated to establish its geometrical specifications. The housing is built using a rapid prototype machine. The electronics component consists of a microcontroller, a microswitch array, a simple display and a power unit. The software component is written in C and receives inputs from user, controls the microservo speed and displays the programmed speed. A number of experiments are conducted to evaluate the performance and capabilities of the micropump. The experiments focus on measurement of flow rate, dosage and duration of operation. A discussion of the performance and capabilities of the developed micropump is also given.

Ethical issues for internet use policy : balancing employer and employee perspectives

An organisational internet use policy (IUP) is a recognised deterrent to manage insider internet misuse. However, IUPs have proven ineffective against this threat, perhaps because of their neglect of the ethical issues involved. An important part of setting an IUP involves the resolution of key ethical dilemmas when employer and employee perspectives conflict. This paper explores the ethical issues that must be addressed when developing an organisational IUP. It draws on a conceptual analysis and an interpretive study of five medium-size and large organisations in Australia and North America. The paper provides a set of key ethical issues for an IUP and compares and contrasts the employer and employee perspectives. It highlights the need to balance the employer and employee perspectives when setting an IUP. Other implications for theory and practice are discussed.