Problem-based learning curricula in engineering

This chapter explores Problem-Based Learning (PBL) curricula in engineering in Australasian universities, in particular its effects on student approaches to learning in PBL teams. Exploring from the three view points: curriculum design and implementation; institutional support structures assisting the transition to PBL for both students and academics; and student learning experiences in PBL teams this chapter intends to close the loop for institutions and academics using PBL to educate future engineers. In particular, this chapter examines the design of engineering PBL courses or subjects within programs and the ways in which learning experiences are designed for students, the support structures that institutions put in place for both academics and students to transition to PBL, teacher practices and student experiences of learning both individually and as a team in PBL. It is argued that many engineering programs still undermine the need for designing learning experiences to help students achieve the desired learning outcomes; seldom consider the learning cultures adopted by PBL teams and how students engage in learning as individuals and as a team. This chapter argues the need for approaches to PBL that enhance student learning and experiences in engineering and the need for support structures that assist both students and academics in the transition to problem-based learning.

The Black Side of the Sun: Camus, Theology, and the Problem of Evil

Albert Camus is typically categorized as an atheistic thinker, in the same breath as Sartre. Yet there is a sizable, often sympathetic, theological response to his works, which deal at great length with Christian themes, wrestle with the problem of evil, and are animated by his own avowed desire — in strong contrast with Sartre and other existentialists — to preserve a sense of the sacred without belief in human immortality. This essay reconstructs three components of Camus’s rapport and disagreement with Christian theology, which he approached pre-eminently through the figure of Augustine, central to his early Diplome thesis. First, we recount the young Camus’s neopagan ‘‘religiosity’’ — a sense of the inhuman majesty and beauty of the natural world at the heart of what he termed (and later regretted terming) the ‘‘absurd,’’ and rooted in Camus’s own unitive experiences growing up amidst the sea, sand, and blazing sun of North Africa. Second, we look at Camus’s engagement with the problem of evil, which for Camus — as for many early modern thinkers such as Bayle or Voltaire — represented the decisive immanent tension in later medieval theology, vindicating — in ethical terms — the modern rebellions against altar, pulpit, and throne. The essay closes by rebutting the charge, strongly argued recently by Ronald Srigley, that Camus was (both) anti-modern because anti-Christian. Camus’s aim, we propose, was instead to bring together a neopagan sense of the wonder of the natural world and our participation in it, with the egalitarian components of Christian ethics, severed from secularized eschatological content.

PhD crisis discourse: a critical approach to the framing of the problem and some Australian ‘solutions’

A feature of HE reform discourse is the tendency to construct the rationale for reform in terms of averting calamity and risk. We refer to this risk talk as ‘crisis discourse’. This study examines the formulation of PhD crisis discourse internationally and in Australia. We find that a key feature of PhD crisis discourse is that universities are producing too many graduates for too few academic jobs; and graduates lack skills that enable them to be productive in jobs outside academia. In Australia, the discourse has shifted from one dominated by efficiency concerns from the late 1990s to the present focus on graduate skills and employability. The policy solution to the efficiency crisis in the Australian PhD resulted in system-wide changes in research training funding focused on increased efficiency. The current unemployability discourse has as yet prompted isolated institutional responses, the introduction of new PhD programs or re-badging existing offerings as pro-skills development offerings. Following an examination of three Australian institutional responses, we conclude that the crisis discourse signals tensions surrounding the PhD: should achievement in doctoral education be measured by outcomes in intellectual excellence or the responsiveness of qualification to the current needs and priorities of society?

Problem sexual behaviour in children: a review of the literature

   Although there is an under-acknowledgement of the issue in Australia there is a large body of international scholarship on juveniles who exhibit sexually violent or coercive behaviours toward other juveniles. Research undertaken in the United States and the United Kingdom emphasises options for clinical treatment, the logistics of coordinating multi agency response, and the causes and correlatives for coercive sexual behaviours in adolescents. Much of this literature has tended to focus on adolescents and there is an urgent need for increased studies on young children engaging in problem sexual behaviour.

   The smaller body of work published in Australia also favours adolescents rather than children with much of this work heavily influenced by international clinical studies. There are, however, a handful of reports based on Australian practitioner data that do focus on young children who engage in problem sexual behaviour. This literature surveys and evaluates the very limited number of existing therapeutic programs in Australia, and provides interview data with practitioners working with children exhibiting problem sexual behaviour. In the main, this research reinforces the findings of the internationa scholarship, both in terms of the contributing factors to problem sexual activity in children, but also in terms of the need for multi-faceted and contextually based cognitive behavioural therapeutic programs in response. More importantly, this burgeoning field of study indicates how far we have to go both in understanding the extent of the problem in Australia and in fashioning appropriate programs for prevention and intervention. Dr Joe Tucci is Chief Executive Officer of the Australian Childhood Foundation (ACF), an organisation that has taken a lead in responding to childhood problem sexual behaviour. Tucci et al., (2006) claim an urgent need for investment in a dedicated research and response agenda (Staiger et al., 2005b). To effectively address this issue researchers and practitioners require comprehensive empirical data on problem sexual behaviour in children across all sectors of Australian society, including Indigenous communities.

PhD crisis discourse : a critical approach to the framing of the problem and some Australian ‘solutions’

 A feature of HE reform discourse is the tendency to construct the rationale for reform in terms of averting calamity and risk. We refer to this risk talk as 'crisis discourse'. This study examines the formulation of PhD crisis discourse internationally and in Australia. We find that a key feature of PhD crisis discourse is that universities are producing too many graduates for too few academic jobs; and graduates lack skills that enable them to be productive in jobs outside academia. In Australia, the discourse has shifted from one dominated by efficiency concerns from the late 1990s to the present focus on graduate skills and employability. The policy solution to the efficiency crisis in the Australian PhD resulted in system-wide changes in research training funding focused on increased efficiency. The current unemployability discourse has as yet prompted isolated institutional responses, the introduction of new PhD programs or re-badging existing offerings as pro-skills development offerings. Following an examination of three Australian institutional responses, we conclude that the crisis discourse signals tensions surrounding the PhD: should achievement in doctoral education be measured by outcomes in intellectual excellence or the responsiveness of qualification to the current needs and priorities of society? © 2014 Springer Science+Business Media Dordrecht.

An examination of a proposed DSM-IV pathological gambling hierarchy in a treatment seeking population: similarities with substance dependence and evidence for three classification systems

Toce-Gerstein et al. (Addiction 98:1661–1672, 2003) investigated the distribution of Diagnostic and Statistical Manual for Mental Disorders, 4th edition (DSM-IV) pathological gambling criteria endorsement in a U.S. community sample for those people endorsing a least one of the DSM-IV criteria (n = 399). They proposed a hierarchy of gambling disorders where endorsement of 1–2 criteria were deemed ‘At-Risk’, 3–4 ‘Problem gamblers’, 5–7 ‘Low Pathological’, and 8–10 ‘High Pathological’ gamblers. This article examines these claims in a larger Australian treatment seeking population. Data from 4,349 clients attending specialist problem gambling services were assessed for meeting the ten DSM-IV pathological gambling criteria. Results found higher overall criteria endorsement frequencies, three components, a direct relationship between criteria endorsement and gambling severity, clustering of criteria similar to the Toce-Gerstein et al. taxonomy, high accuracy scores for numerical and criteria specific taxonomies, and also high accuracy scores for dichotomous pathological gambling diagnoses. These results suggest significant complexities in the frequencies of criteria reports and relationships between criteria.

Understanding the link between body dissatisfaction and binge eating: a model comparison approach

 This thesis explored the association between body dissatisfaction and binge eating by comparing three competing theoretical frameworks. Study I utilised a cross-sectional design and collectively these findings suggest the superiority of the dual pathway model (dietary restraint and negative affect) over the objectification theory and the escape model. The purpose of Study II was then to extend on the findings from Study I by further examining in real-time the model/theory that most strongly explained the body dissatisfaction-binge eating relationship. Participants were prompted at random intervals seven times daily across the course of a week to self-report their state body dissatisfaction, current mood experiences, and eating practices. Results revealed that negative mood, but not dietary restraint, significantly mediated the state body dissatisfaction-binge eating relationship. These results highlight that the dual pathway model is robust, but raise the possibility that the dietary restraint path in the model is not well operationalized. In light of the non-significant mediating effect of dietary restraint, this led the researcher to identify various modeling alternatives to further understand the mediating influences of the pathways of negative affect and dietary restraint.

Children’s body image and sociocultural influences

 This thesis has examined the factors which contribute to the growing problem of body dissatisfaction and associated body change strategies among children aged 8 to 10. The findings from this research will provide important direction for the development of intervention and prevention programs to promote body esteem among children.

Effect of changes to the school food environment on eating behaviours and/or body weight in children: a systematic review

Previous school obesity-prevention reviews have included multi-component interventions. Here, we aimed to review the evidence for the effect of isolated food environment interventions on both eating behaviours (including food purchasing) and/or body weight. Five electronic databases were searched (last updated 30 November 2013). Of the 1,002 unique papers identified, 55 reported on school food environment changes, based on a review of titles and abstracts. Thirty-seven further papers were excluded, for not meeting the inclusion criteria. The final selection consisted of 18 papers (14 United States, 4 United Kingdom). Two studies had a body mass index (BMI) outcome, 14 assessed purchasing or eating behaviours and two studies assessed both weight and behaviour. Seventeen of 18 papers reported a positive outcome on either BMI (or change in BMI) or the healthfulness of food sold or consumed. Two studies were rated as strong quality and 11 as weak. Only three studies included a control group. A school environment supportive of healthy eating is essential to combat heavy marketing of unhealthy food. Modification of the school food environment (including high-level policy changes at state or national level) can have a positive impact on eating behaviours. A need exists, however, for further high-quality studies.

The Healthy Migrant Families Initiative: Development of a culturally competent obesity prevention intervention for African migrants Disease epidemiology - Chronic

Background: Although obesity among immigrants remains an important area of study given the increasing migrant population in Australia and other developed countries, research on factors amenable to intervention is sparse. The aim of the study was to develop a culturally-competent obesity prevention program for sub-Saharan African (SSA) families with children aged 12-17 years using a community-partnered participatory approach. Methods: A community-partnered participatory approach that allowed the intervention to be developed in collaborative partnership with communities was used. Three pilot studies were carried out in 2008 and 2009 which included focus groups, interviews, and workshops with SSA parents, teenagers and health professionals, and emerging themes were used to inform the intervention content. A cultural competence framework containing 10 strategies was developed to inform the development of the program. Using findings from our scoping research, together with community consultations through the African Review Panel, a draft program outline (skeleton) was developed and presented in two separate community forums with SSA community members and health professionals working with SSA communities in Melbourne. Results: The 'Healthy Migrant Families Initiative (HMFI): Challenges and Choices' program was developed and designed to assist African families in their transition to life in a new country. The program consists of nine sessions, each approximately 1 1/2 hours in length, which are divided into two modules based on the topic. The first module 'Healthy lifestyles in a new culture' (5 sessions) focuses on healthy eating, active living and healthy body weight. The second module 'Healthy families in a new culture' (4 sessions) focuses on parenting, communication and problem solving. The sessions are designed for a group setting (6-12 people per group), as many of the program activities are discussion-based, supported by session materials and program resources. Conclusion: Strong partnerships and participation by SSA migrant communities enabled the design of a culturally competent and evidence-based intervention that addresses obesity prevention through a focus on healthy lifestyles and healthy families. Program implementation and evaluation will further inform obesity prevention interventions for ethnic minorities and disadvantaged communities.

Rapid Physarum Algorithm for shortest path problem

As shortest path (SP) problem has been one of the most fundamental network optimization problems for a long time, technologies for this problem are still being studied. In this paper, a new method by integrating a path finding mathematical model, inspired by Physarum polycephalum, with extracted one heuristic rule to solve SP problem has been proposed, which is called Rapid Physarum Algorithm (RPA). Simulation experiments have been carried out on three different network topologies with varying number of nodes. It is noted that the proposed RPA can find the optimal path as the path finding model does for most networks. What is more, experimental results show that the performance of RPA surpasses the path finding model on both iterations and solution time. © 2014 Elsevier B.V.

Lemons on the web: a signalling approach to the problem of trust in Internet commerce

Asymmetric information is at the heart of situations involving trust. In the case of B2CInternet commerce, the information asymmetry typically relates to the difficulty that consumershave of distinguishing between ‘‘trustworthy’’ and ‘‘untrustworthy’’ Web merchants. Theimpasse can be resolved by the use of signals by trustworthy Web merchants to differentiatethemselves from untrustworthy ones. Using an experimental design where subjects are exposedto a series of purchase choices, we investigate three possible signals, an unconditional moneybackguarantee, branding, and privacy statement, and test their efficacy. Our empirical resultsconfirm the predictions suggested by signalling theory.

International study of perceived neighbourhood environmental attributes and Body Mass Index: IPEN Adult study in 12 countries

BACKGROUND: Ecological models of health behaviour are an important conceptual framework to address the multiple correlates of obesity. Several single-country studies previously examined the relationship between the built environment and obesity in adults, but results are very diverse. An important reason for these mixed results is the limited variability in built environments in these single-country studies. Therefore, the aim of this study was to examine associations between perceived neighbourhood built environmental attributes and BMI/weight status in a multi-country study including 12 environmentally and culturally diverse countries. METHODS: A multi-site cross-sectional study was conducted in 17 cities (study sites) across 12 countries (Australia, Belgium, Brazil, China, Colombia, Czech Republic, Denmark, Mexico, New Zealand, Spain, the UK and USA). Participants (n = 14222, 18-66 years) self-reported perceived neighbourhood environmental attributes. Height and weight were self-reported in eight countries, and measured in person in four countries. RESULTS: Three environmental attributes were associated with BMI or weight status in pooled data from 12 countries. Safety from traffic was the most robust correlate, suggesting that creating safe routes for walking/cycling by reducing the speed and volume of traffic might have a positive impact upon weight status/BMI across various geographical locations. Close proximity to several local destinations was associated with BMI across all countries, suggesting compact neighbourhoods with more places to walk related to lower BMI. Safety from crime showed a curvilinear relationship with BMI, with especially poor crime safety being related to higher BMI. CONCLUSIONS: Environmental interventions involving these three attributes appear to have international relevance and focusing on these might have implications for tackling overweight/obesity.

Breaking up of prolonged sitting over three days sustains, but does not enhance, lowering of postprandial plasma glucose and insulin in overweight and obese adults

To compare the cumulative (3-day) effect of prolonged sitting on metabolic responses during a mixed meal tolerance test (MTT), with sitting that is regularly interrupted with brief bouts of light-intensity walking. Overweight/obese adults (n=19) were recruited for a randomized, 3-day, outpatient, cross-over trial involving: (1) 7-h days of uninterrupted sitting (SIT); and (2) 7-h days of sitting with light-intensity activity breaks [BREAKS; 2-min of treadmill walking (3.2 km/h) every 20 min (total: 17 breaks/day)]. On days 1 and 3, participants underwent a MTT (75 g of carbohydrate, 50 g of fat) and the incremental area under the curve (iAUC) was calculated from hourly blood samples. Generalized estimating equation (GEE) models were adjusted for gender, body mass index (BMI), energy intake, treatment order and pre-prandial values to determine effects of time, condition and time × condition. The glucose iAUC was 1.3 ± 0.5 and 1.5 ± 0.5 mmol·h·l(-1) (mean differences ± S.E.M.) higher in SIT compared with BREAKS on days 1 and 3 respectively (condition effect: P=0.001), with no effect of time (P=0.48) or time × condition (P=0.8). The insulin iAUC was also higher on both days in SIT (day 1: ∆151 ± 73, day 3: ∆91 ± 73 pmol·h·l(-1), P=0.01), with no effect of time (P=0.52) or time × condition (P=0.71). There was no between-treatment difference in triglycerides (triacylglycerols) iAUC. There were significant between-condition effects but no temporal change in metabolic responses to MTT, indicating that breaking up of sitting over 3 days sustains, but does not enhance, the lowering of postprandial glucose and insulin.

Relationships between sport participation, problem alcohol use, and violence: A longitudinal study of young adults in Australia

There is a growing body of evidence suggesting a link between sport participation and violent behavior outside of the sporting context. However, there have been few studies that have investigated the basis of this relationship. The current study examined longitudinal relationships between sport participation, problem alcohol use, and various violent behaviors, and whether sport participation moderates relationships between problem alcohol use and violence. The sample comprised 2,262 young adults (55% female, age range at Time 1 = 17-24 years) from Victoria, Australia, surveyed in 2010 and 2012. When controlling for common risk factors, substance use, and past violence, sport participation was not associated with any violent behaviors 2 years later. However, sport participation moderated the relationship between problem alcohol use and fighting, whereby problem alcohol use was associated with engaging in fights 2 years later for sport participants, but not for nonparticipants. These findings suggest that it is not sport participation per se that influences later violence but the drinking norms or culture embedded within certain sporting contexts. Prevention approaches that address the drinking culture and social approval of excessive alcohol consumption within sporting contexts may reduce the incidence of violent behavior in the community.