Evaluation of the questions used to elicit evidence about abuse from child witnesses : Australian study

This study provides one of the first objective evaluations of the performance of a group of Australian police officers when conducting interviews about child abuse. The interviews included 136 videotaped child witness statements, conducted between 2001 and 2007 by police officers from two jurisdictions of Australia. The results indicated many positive aspects of the interviewers' performance, including the use of ground rules at the outset of the interview, commencement of the free-narrative account by seeking the children's understanding of the purpose of the interview, and avoidance of suggestive questions. But the interviewers tended to raise issues of contention when the child did not provide an initial disclosure, and the proportion of open-ended questions was low relative to specific cued-recall and closed questions. Further many closed questions raised specific details not yet mentioned by the child. These behaviours were exhibited irrespective of the recency of interview or time since training. The implications of these findings are discussed.

Endogenous transportation technology in a cournot differential game with intraindustry trade

We investigate a dynamic Cournot duopoly with intraindustry trade, where firms invest in R&D to reduce the level of iceberg transportation costs. We adopt both open-loop and closed-loop equilibrium concepts, showing that a unique (saddle point) steady state exists in both cases. In the open-loop model, optimal investments and the resulting efficiency of transportation technology are independent of the relative size of the two countries. On the contrary, in the closed-loop case firms’ R&D incentives are driven by the relative size of the two countries. Policy implications are also evaluated.

Student support : bridging the gap between students and the university

Bangladesh introduced open and distance learning as a means of providing education for people in isolated and remote locations through the establishment of the Bangladesh Open University (BOU). The broad aim of the BOU is to provide flexible and needs-based education to those unable or not wishing to enter conventional educational institutions. The BOU is presently the only university in Bangladesh to provide mass education and also to provide continuing education and professional and technical education to support the existing educational system. The BOU has a mission that encompasses secondary and higher levels of education. BOU operates its programs through a centralised academic and administrative staff, and regional and local offices throughout Bangladesh that organise local tutorials and distribute information and materials. BOU has adult students in all parts of the country, and most of the students live in rural areas. They need support that is appropriate to their local circumstances. Using an interpretive approach, this research examines the support needs of students studying for the Secondary School Certificate and the Bachelor of Education, assesses the effectiveness of current support services and explores alternatives to the current system. The underlying assumption is that support needs to be appropriate to the country’s culture and circumstances, and useful and feasible from the perspectives of students, staff, administrators and senior university officials. To investigate the appropriate support for distance education students, this research was conducted in four sample regions. Two were selected from areas of sparse population where the terrain makes transport difficult and two from areas that are more densely populated and where transport is easier. A questionnaire survey and focus groups were conducted with students, focus groups with local staff and interviews with Regional Directors within the four sample regions. Interviews were also undertaken with central University senior staff to get their perspectives on current and future policies for student support.

Lesbian and gay experiences of primary care in one borough in North London, UK

This paper reports the findings of a research study which explored the experiences of lesbians and gay men in relation to primary care services in general practice in a multiracial borough in North London, UK. The research took a qualitative approach and used several methods including a literature review, interviews with stakeholders (n = 6), focus group discussions (n = 27) and completion (n = 42) of a survey distributed to lesbians and gay men locally. The process facilitated the development of a grounded theory. The important themes to emerge were finding a GP and coming out, sexual health issues, mental health issues and communication with the GP. Given the high level of mobility among this population, there were problems in maintaining continuity of care, and a lack of protocols to facilitate the sharing of knowledge between patients and practitioners while reducing reliance on heterosexual assumptions. There were clear differences between the treatment of women and men in relation to sexual health, and neither approach could be said to be patient centred or inclusive of diversity of need. The fact that many informants accessed alternative sources of healthcare indicated that they were concerned to promote and maintain their health and wellbeing in a holistic manner. The lack of transparent protocols within general practice inhibited some informants from being as open and honest about their sexuality with their GPs as they were with their families or their employers. The findings highlight (1) the need for organisational development within primary care to improve sensitivity to the needs of lesbians and gay men; (2) the value of research to engage with the social experiences of lesbians and gay men; (3) the importance of engaging with the differing experiences of lesbians and gay men in relation to sexual health concerns.

'Nobody but a bunch of mothers' : grassroots activism and women's leadership in 1970s Melbourne

This group biography draws on oral history interviews to show how crucial women's leadership was to Melbourne's urban protest movement in the 1970s. Inner city resident's action groups were characterised by a high degree of participation by women. For most it was a radicalising experience as they became involved in action for the first time in their lives. Their involvement in local action and politics contributed to the development of more open and participatory governance focused on community building and environmental issues.

The clinical effectiveness and cost-effectiveness of bariatric (weight loss) surgery for obesity: a systematic review and economic evaluation

To assess the clinical effectiveness and cost-effectiveness of bariatric surgery for obesity. Seventeen electronic databases were searched [MEDLINE; EMBASE; PreMedline In-Process & Other Non-Indexed Citations; The Cochrane Library including the Cochrane Systematic Reviews Database, Cochrane Controlled Trials Register, DARE, NHS EED and HTA databases; Web of Knowledge Science Citation Index (SCI); Web of Knowledge ISI Proceedings; PsycInfo; CRD databases; BIOSIS; and databases listing ongoing clinical trials] from inception to August 2008. Bibliographies of related papers were assessed and experts were contacted to identify additional published and unpublished references. Two reviewers independently screened titles and abstracts for eligibility. Inclusion criteria were applied to the full text using a standard form. Interventions investigated were open and laparoscopic bariatric surgical procedures in widespread current use compared with one another and with non-surgical interventions. Population comprised adult patients with body mass index (BMI) > or = 30 and young obese people. Main outcomes were at least one of the following after at least 12 months follow-up: measures of weight change; quality of life (QoL); perioperative and postoperative mortality and morbidity; change in obesity-related comorbidities; cost-effectiveness. Studies eligible for inclusion in the systematic review for comparisons of Surgery versus Surgery were RCTs. For comparisons of Surgery versus Non-surgical procedures eligible studies were RCTs, controlled clinical trials and prospective cohort studies (with a control cohort). Studies eligible for inclusion in the systematic review of cost-effectiveness were full cost-effectiveness analyses, cost-utility analyses, cost-benefit analyses and cost-consequence analyses. One reviewer performed data extraction, which was checked by two reviewers independently. Two reviewers independently applied quality assessment criteria and differences in opinion were resolved at each stage. Studies were synthesised through a narrative review with full tabulation of the results of all included studies. In the economic model the analysis was developed for three patient populations, those with BMI > or = 40; BMI > or = 30 and < 40 with Type 2 diabetes at baseline; and BMI > or = 30 and < 35. Models were applied with assumptions on costs and comorbidity.

The influence of cover on nesting Red-capped Plovers: a trade-off between thermoregulation and predation risk?

 Some ground-nesting birds adopt a mixed strategy of nesting in the open, or under cover (e.g. vegetation). This may represent a trade-off between thermally favourable nest sites (covered) and those that enable the early detection and avoidance of predators (open). This study examined whether such a trade-off exists for Redcapped Plover Charadrius ruficapillus, whose eggs are preyed upon principally by Little Raven Corvus mellori. For real and artificial nests, nest temperatures under cover (real, 25.9 ± 0.1°C; false, 16.2 ± 0.5°C) were cooler than those in the open (real, 26.8 ± 0.1°C; false, 17.4 ± 0.9°C). Covered nests had more visual obstructions than open nests (covered, 65.5% ± 11.4%; open, 7.4% ± 2.8%) and a standardised measure of incubator escape distance, initiated by experimental human approaches, indicated incubators fled open nests at longer distances than for covered nests. Nests under cover showed a slightly (non-significant) higher probability of surviving one day (Daily Survival Rate [DSR] = 0.978) than those in the open (DSR = 0.950). For false nests containing model eggs, covered nests exhibited better survival to 10 days compared with open nests (20.4% vs. 4.7%). Thus, covered nests are associated with enhanced thermal environments and egg survival, but predators can approach the incubator more closely. Overall, the proposed trade-off between thermal and predation risks associated with nest sites appears to exist and explains the ongoing occurrence of nests in open and covered locations.

Framing and enhancing distributed leadership in the quality management of online learning environments in higher education

This article reports on the findings of senior leadership interviews in a nationally funded project on distributed leadership in the quality management of online learning environments (OLEs) in higher education. Questions were framed around the development of an OLE quality management framework and the situation of the characteristics of distributed leadership at the core of the framework. The project’s premise is that distributed leadership is a descriptive reality of managing OLEs given the various leadership parties involved and the complexities of the contemporary technological landscape. Leaders’ understandings of distributed leadership were examined—its nature, value and potential for advancing the quality management of OLEs. There was confirmatory evidence of its reality, but its meaning and value were not uncritically accepted. It can be concluded that building distributed leadership must start through deliberative formal leadership commitment and action starting at the highest levels of the institution.

'Unconscionable mystification'? : rooms, spaces and the prose poem

Since the 19th century, when a number of French writers—most conspicuously Charles Baudelaire and Arthur Rimbaud—introduced what we may think of as the modern prose poem into European literature, prose poetry has been part of a significant debate about the contemporary usefulness of existing literary modes and genres. While early French practitioners partly used the form to subvert and problematise traditional poetic prosody, once this aim was achieved prose poetry remained a significant contemporary literary form, achieving wide acceptance. In the context of contemporary developments and manifestations of prose poetry, this article discusses John Frow’s comments that texts might “‘perform’ a genre, or modify it in ‘using’ it, or only partially realise a generic form, or … be composed of a mix of different genres” (2015: 11). It also discusses the authors’ Rooms and Spaces project, which explores—and exemplifies through its component of creative practice—ways in which prose poetry may be considered “poetic”; how the forms of prose poetry may be room-like and condensed; or open and highly suggestive (sometimes both at once); how prose poetry is intertextual and polysemous; and how prose poetry frequently conveys a sense of completeness despite tending to be fragmentary. Prose poetry may generically problematic but the authors suggest that this may make it an exemplary post-postmodern form of writing; and that reading prose poetry may provide significant insights into understanding how unstable genre boundaries really are.

Call auction transparency and market liquidity: Evidence from China

This paper uses the natural experiment offered by the Shanghai Stock Exchange to investigate the impact of opening call auction transparency on market liquidity. We find that the dissemination of indicative trade information during the pre-open call auction session leads to an overall improvement in stock liquidity in the continuous trading session. Bid-ask spreads narrow in the first trading hour because adverse selection risk fell significantly and there is less price volatility in the continuous market. This effect is greater for actively traded securities than illiquid securities. Our findings are robust for different lengths of sample period, different lengths of trading hours after market open, and stocks that had (and had not) reformed the share split structure during our research period.

Switch point finding using polynomial regression for fuzzy type reduction algorithms

Karnik-Mendel (KM) algorithm is the most widely used type reduction (TR) method in literature for the design of interval type-2 fuzzy logic systems (IT2FLS). Its iterative nature for finding left and right switch points is its Achilles heel. Despite a decade of research, none of the alternative TR methods offer uncertainty measures equivalent to KM algorithm. This paper takes a data-driven approach to tackle the computational burden of this algorithm while keeping its key features. We propose a regression method to approximate left and right switch points found by KM algorithm. Approximator only uses the firing intervals, rnles centroids, and FLS strnctural features as inputs. Once training is done, it can precisely approximate the left and right switch points through basic vector multiplications. Comprehensive simulation results demonstrate that the approximation accuracy for a wide variety of FLSs is 100%. Flexibility, ease of implementation, and speed are other features of the proposed method.

A game of cat-and-mouse: microhabitat influences rodent foraging in recently burnt but not long unburnt shrublands

We investigated the influence of vegetation structure and fire history on the foraging behavior of small rodents (Notomys mitchellii, Pseudomys hermannsburgensis, and Mus musculus) by conducting giving-up density (GUD) experiments in recently burnt (9–13 years since last fire) and long unburnt shrublands (> 40 years), and open and sheltered microhabitats, in a semiarid region of Western Australia. We predicted that rodents would spend less time foraging in recently burnt shrublands and open microhabitat and that the influence of microhabitat would be weaker in long unburnt compared to more recently burnt vegetation. Our findings show that fire history and microhabitat structure influence the foraging behavior of the study species and that the influence of microhabitat varies between fire histories. GUDs were higher in long unburnt vegetation and in open microhabitats. There was a microhabitat effect in recently burnt vegetation, but not in long unburnt. Rodents foraged more in sheltered microhabitats probably because predator encounters are less likely to occur there and it provides them with greater refuge from predation. The presence of a microhabitat effect in recently burnt, but not long unburnt vegetation suggests that understory vegetation density is more important in mediating predation risk than canopy density. Future studies of small mammal responses to land management actions should include behavioral, as well as population-level responses to differing fire regimes.

"I can sit on the beach and punt through my mobile phone" : the influence of physical and online environments on the gambling risk behaviours of young men.

Gambling is rapidly emerging as an important public health issue, with gambling products causing considerable health and social harms to individuals, families and communities. Whilst researchers have raised concerns about online wagering environments, few studies have sought to explore how factors within different gambling environments (both online and land-based) may be influencing the wagering, and more broadly the gambling risk behaviours of young men. Using semi-structured interviews with 50 Australian men (20-37 years) who gambled on sport, we explored the ways in which online and land-based environments may be risk-promoting settings for gambling. This included the appeal factors associated with gambling in these environments, factors that encouraged individuals to gamble, and factors that encouraged individuals to engage in different, and more harmful types of gambling. Interviews were conducted over the course of a year (April 2015 - April 2016). We identified a number of situational and structural factors that promoted risky gambling environments for young men. In the online environment, gambling products had become exceedingly easy to access through mobile technologies, with young men subscribing to multiple accounts to access industry promotions. The intangibility of money within online environments impacted upon risk perceptions. In land-based environments, the social rituals associated with peer group behaviour and sport influenced risky patterns of gambling. The presence of both gambling and alcohol in pub environments led individuals to gamble more than they normally would, and on products that they would not normally gamble on. Land-based venues also facilitated access to multiple forms of gambling under the one roof. We identified a number of factors in both land and online environments that when combined, created risk-promoting settings for gambling among young men. By exploring these contextual conditions that give rise to gambling harm, we are better able to advocate for effective public health responses in creating environments that prevent harmful gambling.

Quantitation of ascorbic acid in Arabidopsis thaliana reveals distinct differences between organs and growth phases

Optimal plant growth is the result of the interaction of a complex network of plant hormones and environmental signals. Ascorbic acid (AsA) is a crucial antioxidant in plants and is involved in the regulation of cell division, cell expansion, photosynthesis and hormone biosynthesis. Quantitative analysis of AsA in Arabidopsis thaliana organs was conducted using HPLC with d -isoascorbic acid (Iso-AsA) as an internal standard. Analysis revealed Àuctuations in the levels of AsA in different organs and growth phases when plants were grown under standard conditions. AsA concentrations increased in leaves in direct proportion to leaf size and age. Young siliques (seed set stage) and Àowering buds (open and unopened) showed the highest levels of AsA. A relationship was found between the level of AsA and indole acetic acid (IAA) in leaves, stems, Àowers, and siliques and the highest level of IAA and AsAwere found in the Àowers. In contrast, the lowest level of the plant hormone, salicylic acid, was found in the Àowers and the highest quantity measured in the leaves. Consequently, AsA has been found to be a multifunctional molecule that is involved as a key regulator of plant growth and development.