Process analysis of the solution strategies used for problems contained in the Minnesota Paper Board Form Board test

This thesis reviews progress toward an understanding of the processes involved in the solution of spatial problems. Previous work employing factor analysis and information processing analysis is reviewed and the emphasis on variations in speed and accuracy as the major contributers to individual differences is noted. It is argued that the strategy used by individuals is a preferable explanatory concept for identifying the cognitive substratum necessary for problem solving. Using the protocols obtained from subjects solving The Minnesota Paper Form Board (Revised), a test commonly regarded as measuring skill in spatial visualization, a number of different strategies are isolated. Assumptions as to the task variants which undergird these strategies are made and tested experimentally. The results suggest that task variants such as the size of the stimulus and the shape of the pieces interact with subject variables to produce the operating strategy. Skill in problem solving is revealed in the ability to structure the array, to hold a structured image and to reduce the number of answers requiring intensive processing. The interaction between task and subject variables results in appropriate or inappropriate strategies which in turn affect speed and accuracy. Results suggest that strategy formation and usage are the keys to explaining individual differences and an heuristic model is presented to explain the performance of individual subjects on the problems involved in the Minnesota Paper Form Board. The model can be used to predict performance on other tests; and as an aid to teaching subjects experiencing difficulties. The model presented incorporates strategy variation and is consequently mores complex than previously suggested models. It is argued that such complexity is necessary to explain the nature of a subject's performance and is also necessary to perform diagnostic evaluation. Certain structural -features of the Minnesota Paper Form Board are questioned and suggestions for improvement included. The essential explanatory function of the strategy in use makes the prevalent group administration approach suspect in the prediction of future performance in spatial or vocational activity.

Evaluation of heat stress indices using physiological comparisons in an alumina refinery in a sub-tropical climate

The production of alumina involves the use of a process known as the Bayer process. This method involves the digestion of raw bauxite in sodium hydroxide at temperatures around 250°C. The resultant pregnant liquor then goes through a number of filtering and precipitation processes to obtain the aluminium oxide crystals which are then calcined to obtain the final product. The plant is situated in a sub tropical climate in Northern Australia and this combined with the hot nature of the process results in a potential for heat related illnesses to develop. When assessing a work environment for heat stress a heat stress index is often employed as a guideline and to date the Wet Bulb Globe Temperature (WBGT) has been the recommended index. There have been concerns over the past that the WBGT is not suited to the Northern Australian climate and in fact studies in other countries have suggested this is the case. This study was undertaken in the alumina plant situated in Gladstone Queensland to assess if WBGT was in fact the most suitable index for use or if another was more applicable. To this end three indices, Wet Bulb Globe Temperature (WBGT), Heat Stress Index (HSI) and Required Sweat Rate (SWreq) were compared and assessed using physiological monitoring of heart rate and surrogate core temperature. A number of different jobs and locations around the plant were investigated utilising personal and environmental monitoring equipment. These results were then collated and analysed using a computer program written as part of the study for the manipulation of the environmental data . Physiological assessment was carried out using methods approved by international bodies such as National Institute for Occupational Safety & Health (NIOSH) and International Standards Organisation (ISO) and incorporated the use of a ‘Physiological Factor’ developed to enable the comparison of predicted allowable exposure times and strain on the individual. Results indicated that of the three indices tested, Required Sweat Rate was found to be the most suitable for the climate and in the environment of interest. The WBGT system was suitable in areas in the moderate temperature range (ie 28 to 32°C) but had some deficiencies above this temperature or where the relative humidity exceeded approximately 80%. It was however suitable as a first estimate or first line indicator. HSI over-estimated the physiological strain in situations of high temperatures, low air flows and exaggerated the benefit of artificial air flows on the worker in certain environments ie. fans.

An evaluation of the performance of advanced melded composite joints

Melding is an efficient three step composite joining process that involves the selective cure of composite adherends before the final adhesive joint is created using the adherends own resin system. Melding does not require many of the processes and compromises associated with conventional techniques like adhesive bonding and mechanical fastening.

The Taguchi design of experiments technique was used to optimise three melded joint factors for a unidirectional epoxy prepreg material. The performance of the joint was evaluated using tensile and flexural strength as well as flexural modulus. It was found that not having a step for every ply in the joint was the most influential factor affecting joint performance. This was due to the differing failure modes induced by this factors various levels, which varied the amount of fibre breakage at failure.

Development and evaluation of a glass-box interpreter for teaching novice programmers

This study evaluates the efficacy of a low-level program visualisation tool as a learning aid for novice programmers and develops and evaluates features which might further enhance the benefit of a low-level program visualisation tool (called Bradman). Bradman is an interpreter which makes visible aspects of the programming process which are normally hidden from the user.

Evaluation of an environmental rating tool for commercial building design

This research examined the inclusion of environmental rating tools in the design of commercial buildings. Environmental issues are becoming increasingly important for designers and the results of the study suggest that rating tools can be an asset to design teams, provided they are integrated and reinforced throughout the design process.

Evaluation of individual program plan content and quality in a Victorian residential service

The study assesses the quality and content of Individual Program Plans for 284 Victorian adults with profound intellectual disabilities living in one residential service. A checklist was developed for improving plan quality, and measurement difficulties with checklists discussed. Recommends that a quality improvement process be implemented.

Scaling up community-based obesity prevention in Australia : background and evaluation design of the health promoting communities : being active eating well initiative

Background : There is only limited evidence available on how best to prevent childhood obesity and community-based interventions hold promise, as several successful interventions have now been published. The Victorian Government has recently funded six disadvantaged communities across Victoria, Australia for three years to promote healthy eating and physical activity for children, families, and adults in a community-based participatory manner. Five of these intervention communities are situated in Primary Care Partnerships and are the subject of this paper. The interventions will comprise a mixture of capacity-building, environmental, and whole-of-community approaches with targeted and population-level interventions. The specific intervention activities will be determined locally within each community through stakeholder and community consultation. Implementation of the interventions will occur through funded positions in primary care and local government. This paper describes the design of the evaluation of the five primary care partnership-based initiatives in the 'Go for your life' Health Promoting Communities: Being Active Eating Well (HPC:BAEW) initiative.

Methods/Design : A mixed method and multi-level evaluation of the HPC:BAEW initiative will capture process, impact and outcome data and involve both local and state-wide evaluators. There will be a combined analysis across the five community intervention projects with outcomes compared to a comparison group using a cross-sectional, quasi-experimental design. The evaluation will capture process, weight status, socio-demographic, obesity-related behavioral and environmental data in intervention and comparison areas. This will be achieved using document analysis, paper-based questionnaires, interviews and direct measures of weight, height and waist circumference from participants (children, adolescents and adults).

Discussion : This study will add significant evidence on how to prevent obesity at a population level in disadvantaged and ethnically diverse communities. The outcomes will have direct influence on policy and practice and guide the development and implementation of future obesity prevention efforts in Australia and internationally.

A critical evaluation of the standardisation potential of business plan evaluation aids (BPEA) used in venture capital investment decision-making

The research objective was to perform a critical evaluation and comparison of four, representative Business Plan Evaluation Aids (BPEA) to facilitate constructive discussion of the proposition that greater standardisation of venture capital decision-making might be both desirable and possible.

The four BPEA were systematically compared using a structured, taxonomic process employing seven key criteria. The evidence of this investigation suggests a clear superiority for BPEAs, which are based on the known attributes of successful ventures and use actuarial modelling. Discussion centred on the importance of using BPEAs in a quest for greater consistency of venture capital investment decision-making.

Toward the standardization of venture capital investment evaluation : decision criteria for rating investee business plans

This study examined the criteria used by venture capitalists to evaluate business plans in order to make investment decisions. A literature survey revealed two competing theories: “espoused criteria” where evaluation decisions are based on what venture capitalists say are the decisive factors; versus the use of “known attributes” that successful ventures actually possess. Brunswik’s Lens Model from Social Judgment Theory guided an empirical investigation of several different evaluation methods based on information contained in 129 business plans submitted for venture capital over a 3 year period. Data evaluation culminated in the comparison of the percentage of correct decisions (“hit-rate”) for each method. We found that decisions based on the known attributes of successful ventures have significantly better hit-rates than decisions made using espoused criteria. Discussion centred on the goal of achieving consistency in the conduct of venture analysis. Process standardization can aid in the achievement of consistency. Future research will both deepen and broaden insights.

Research and diabetes nursing. Part 2 : process of critical review

This article is the second in a six-part series addressing research and the DSN. Crirical review is a key aspect of research and evidencebased care and, therefore, of clinical and professional practice. Critical review is an analytical and reflective process that involves judging the quality of research publicarions and their relevance to practice. This article oudines key aspects of how to review publications and conference presentations, how critical review applies to clinical care, and how this process om help develop writing and critical thinking skills. Also addressed are the general aspects of critical review, and a list of further reading and useful websites is provided. Specific considerations for particular research methods such as quantitative, qualitative, evaluation studies and audits will be addressed in later articles in the series.

Evaluation of the use of Assessment Centre methodology to enhance development planning, work placement outcomes and work readiness for postgraduate students : a pilot

Background: Placements as a form of Work Integrated Learning are widely recognised for the positive impact they have on improving student employability and work readiness. Students can maximise strengths, improve areas of weakness, and develop a strong understanding of the requirements of their chosen field within the confines of a well monitored and rich learning environment. Assessment Centres (ACs) are commonly used in corporate settings for recruitment, selection and more recently to provide developmental feedback to participants. Based on a recent literature review, the present the present project evaluates the application of AC methodology as a developmental tool within the placement milieu. The review, which is also included the current conference proceedings details the benefits of utilising the AC process forming the impetus for the present pilot (Sturre; von Treuer & Keele 2010).
Aims: The primary aim of the paper was to evaluate the application of AC methodology as a tool for measuring and subsequently enhancing professional competencies in a sample of postgraduate students in organisational psychology (n=15).
Method: A longitudinal design was utilised with numerous evaluation points from placement stakeholders. This paper presents the first wave of findings. Students undertook a range of activities, including an in-tray exercise, role play, written report, leaderless group discussion and a personality assessment. Comprehensive feedback was provided by organisational psychologists who also fulfil the role of placement co-ordinators. With the assistance of Placement Co-ordinators, students prepared development plans relating to the competencies identified as requiring development. These plans were to be addressed and progress monitored during consecutive placements.
Results: Initial perceptions gathered from students regarding the AC process were very encouraging. Performance
evaluations collected to date, as measured by behaviourally based ratings scales completed by the students themselves and their workplace supervisors illustrate the positive effect of this methodology. The rigour and comprehensive techniques offered by the methodology enabled students to focus on and improve areas identified for development.
Conclusions: It is important to note that the present design formed a pilot study and as mentioned was undertaken with a limited sample. Future implementation is planned with larger samples, enabling a more comprehensive analysis of the methodology. Nevertheless, the methodology appears to provide a much needed strategy for the assessment and ongoing development of students prior to and during work placements. The application provides early intervention enabling students to address development needs with input from both university and organisational stakeholders based on an established, standardised process.

Evaluation of the thermal behaviour of bevelled cutting inserts using a numerical approach

The nose geometry of a hard and brittle metal cutting tool is generally modified in order to avoid the premature failure due to fracture under tensile stresses. While most research findings point to a favourable mechanical load pattern, the possible influence of the shape of the geometry on the thermal fields and the consequent changes in the stressed state of the tool seem to have attained less attention. The present work aims at establishing the thermal behaviour of bevelled tools under varying geometrical and process parameters. Data generated from statistically designed experiments and quick-stop chip samples are coupled to conduct numerical investigations using a mixed finite and boundary element solution to obtain the temperature distribution in bevelled carbide inserts. Due consideration is given to the presence of the stagnation zone and its size and shape. While the cutting forces and temperatures increased owing to the blunt shape of the tool, the possible absence of tensile stresses was found to be the likely effect of a more uniform temperature distribution resulting from a significant plastic contact on the principal flank and the consequent flank heat source. The characteristic low-temperature zones close to the nose of the conventional tool are taken over by the stagnation zone in bevelled tools. © IMechE 2007.

Using vignettes to evaluate the outcomes of student learning : data from the evaluation of the new social work degree in England

This paper reports the use of vignettes as a methodology to analyse the extent to which the new social work degree programmes enabled students to develop their analytical and reflective capabilities. Two vignettes, which focused on children and families and adult social care respectively, were developed for the study. Students were asked to respond in writing, from the perspective of a social worker, to a standard set of questions at the beginning (T1) and end of their degree programme (T2). Considering the responses to all questions across the two vignettes, a series of scales was developed to measure the key themes which had been identified by qualitative analysis. These included ‘Attention to process of relationships’ and ‘Social/structural/political awareness’. Responses were also rated as ‘descriptive’, ‘analytic’ or ‘reflective’.

Students from six universities in England participated. From an original sample of 222 students, it was possible to match 79 T1 and T2 responses. Analysis of variance demonstrated statistically significant increases in nine of the 11 themes and increases in ratings for analysis and reflection.

In conclusion, vignettes can be used to produce both qualitative and quantitative data in respect of changes in students’ acquisition of knowledge and skills over time.

Impact of alcohol harm reduction strategies in community sports clubs : pilot evaluation of the good sports program

Objective: Approximately 4.5 million Australians are involved in community sports clubs. A high level of alcohol consumption tends to be commonplace in this setting. The only program of its type in the world, the Good Sports program was designed to reduce harmful alcohol consumption in these Australian community sports clubs. The program offers a staged accreditation process to encourage the implementation of alcohol harm-reduction strategies.

Method: We conducted a postintervention adoption study to evaluate whether community sports club accreditation through the Good Sports program was associated with lower rates of alcohol consumption. We examined alcohol consumption rates in 113 clubs (N = 1,968 participants) and compared these to consumption rates in the general community. We hypothesized that members of clubs with more advanced implementation of the Good Sports accreditation program (Stage Two) would consume less alcohol than those with less advanced implementation (Stage One).

Results: Multilevel modeling (MLM) indicated that on days when teams competed, Stage Two club members consumed 19% less alcohol than Stage One club members. MLM also indicated that the length of time a club had been in the Good Sports program was associated with reduced rates of weekly drinking that exceeded Australian short-term risky drinking guidelines. However consumption rates for all clubs were still higher than the general community. Higher accreditation stage also predicted reduced long-term risky drinking by club members.

Conclusion: Our findings suggest that community sports clubs show evidence of higher levels of alcohol consumption and higher rates of risky consumption than the general community. Implementation of the Good Sports accreditation strategy was associated with lower alcohol consumption in these settings.

Performance evaluation of open source seismic data processing packages

In many businesses, including hydrocarbon industries, reducing cost is of high priority. Although hydrocarbon industries appear able to afford the expensive computing infrastructure and software packages used to process seismic data in the search for hydrocarbon traps, it is always imperative to find ways to minimize cost. Seismic processing costs can be significantly reduced by using inexpensive, open source seismic data processing packages. However, hydrocarbon industries question the processing performance capability of open source packages, claiming that their seismic functions are less integrated and provide almost no technical guarantees for one to use. The objective of this paper is to demonstrate, through a comparative analysis, that open source seismic data processing packages are capable of executing the required seismic functions on an actual industrial workload. To achieve this objective we investigate whether or not open source seismic data processing packages can be executed using the same set of seismic data through data format conversions, and whether or not they can achieve reasonable performance and speedup when executing parallel seismic functions on a HPC cluster. Among the few open source packages available on the Internet, the subjects of our study are two popular packages: Seismic UNIX (SU) and Madagascar.