Examining undergraduate student retention in mathematics using network analysis and relative risk

Higher education faces challenges in retaining students who require a command of numeracy in their chosen field of study. This study applies an innovative combination of relative risk and social network analysis to enrolment data of a single cohort of commencing students from an Australian regional university. Relative risk, often used in epidemiology studies, is used to strategically investigate whether first year mathematics subjects at the university demonstrated a higher risk of attrition when compared to other subjects offered in the first year of study. The network analysis is used to illustrate the connections of those mathematics subjects, identifying service subjects through their multiple connections. The analysis revealed that attrition rates for eight of the nine subjects were within acceptable limits, and this included identified service subjects. The exception highlighted the issue of mathematics competencies in this cohort. This combined analytical technique is proposed as appropriate for use when investigating attrition and retention at faculty and institutional levels, including the determination of levels of intervention and support for any subject

Thiamine, Riboflavin, and Sensory Stability of Irradiated Brown Rice.

While brown rice is nutritionally superior to white rice, it is not shelf stable, becoming rancid in a matter of weeks. Preservation by refrigeration or freezing is expensive and not universally available. Therefore, other preservation methods, such as aqueous ethanol extraction of lipids, have been studied to overcome this problem, but these methods also have limitations. The effects of gamma-irradiation on the physicochemical properties and lipase activity in brown rice has been well documented. Gamma-irradiation has been shown to reduce lipase activity, presumably preserving sensory quality. A sensory study of 2 Louisiana grown varieties (Mars and Lemont) of irradiated brown rice performed at monthly intervals over a period of 6 months was conducted to provide the definitive data to assess this method of preservation for sensory effects. Rough rice was de-hulled, irradiated at 0, 1, and 2 kGy, and stored for a period of up to 6 months at ambient temperature in sealed plastic bags. Duplicate samples were taken at monthly intervals starting with time 0 and evaluated for thiamine and riboflavin status using reverse phase HPLC and sensory quality using an experienced 8-person panel, respectively. These procedures were replicated 3 times to ensure scientific and statistical validity. The 2 kGy treatment level produced the worst hedonic rating for both varieties. The 1 kGy radiation level did not significantly affect the sensory quality of either rice variety. Storage negatively affected nutty and milky attributes, which were stable to irradiation treatment. The rancidity attribute of brown rice samples, as perceived by the sensory panel, was negatively affected by irradiation treatment. The effect of treatment and storage on thiamine and riboflavin levels of the rice samples was significantly different from the control only at the 2 kGy level Mars variety at 6 months of storage. However, treated samples of the Mars variety stored for a period of 6 months retained nearly 50% of original thiamine and riboflavin levels. Thiamine and riboflavin were essentially unaffected by storage or treatment in Lemont rice samples

Ethnic Heterogeneity of Social Networks and Cross-Ethnic Friendships of Elementary School Boys and Girls

The present study examines the ethnic heterogeneity of children’s social networks and cross-ethnic friendships as a function of gender, age, and time in an ethnically diverse school. Subjects were 350 children in first through sixth grades. Mutual peer nominations of 350 children yielded 956 reciprocal dyads and 88 social network groups. Girls had larger and more ethnically diverse social networks than boys. Girls were more likely to belong to a social network group and less likely than boys to be isolates as the school year progressed. At roughly fifth and sixth grade, girls had more reciprocal friends than boys, and at roughly third and fourth grade, girls were more likely than boys to have cross-ethnic friends. With regard to friendship stability, same-ethnic/same-gender (girl) dyads were most stable and cross-ethnic/mixed-gender (boy-girl) dyads were least stable

Characterizations of Pacific Island people in the New Zealand press

Researchers have documented how ethnic minorities are often disadvantaged in mainstream media coverage, which function to silence minority voices and to privilege majority voices. Such representational practices have very real implications for the position of ethnic minorities in society, and their associated rights and life chances. Portrayals of Pacific Islanders in newspapers reflect processes whereby media monitor marginalized groups and give prominence to negative attributes. This paper documents both promising and negative trends in print news portrayals of Pacific peoples and provides a basis for us to open a dialogue with Pacific media activists

Māori and community news constructions of Meningococcal B: the promotion of a moral obligation to vaccinate

News media communicate various risks of disease, showcase medical breakthroughs and disseminate texts that both reflect and renegotiate shared cultural understandings of health and illness. Little is known about the role of Māori and community news media in the social negotiation of health and illness in Aotearoa. To address this gap in the literature, this paper reports findings from a study of news reporting on Meningococcal B by the Māori Television Service and two community newspapers serving Māori communities. Findings document how news works to position vaccination as a ‘common sense’ practice that whānau have a moral obligation to undergo. Neglected are wider socio-structural considerations that impact the prevalence of illness among Māori

Street health: Practitioner service provision for Maori homeless people in Auckland

Drawing insights from interviews with Maori homeless people, health professionals, and relevant local and international literatures, this chapter focuses on the provision of medical care to homeless people. In particular, we propose that health services orientate to accommodate the worldviews and circumstances of Maori homeless people. Below we consider colonialism and societal developments that have led to homelessness among Maori today. We then present a case study of ‘Grant’, which was compiled from common aspects of various Maori homeless people who access health services at the Auckland City Mission (ACM); an organisation with a long history of catering to the needs and hopes of dispossessed groups, providing food, clothing, advocacy, social and health services. The relational orientation of healthcare at the ACM is discussed, and leads to an exploration of ‘judgement-free service space’ for meeting client needs (cf., Trussell & Mair, 2010). Lastly, we focus on how health professionals can respond to the multiple healthcare needs of Maori homeless people, in partnership with social services

Review Essay: Emplacement and everyday use of medications in domestic dwellings

To extend knowledge of relationships between people and domestic settings in the context of medication use, we conducted fieldwork in twenty households in New Zealand. These households contained a range of ‘medicative’ forms, including prescription drugs, traditional remedies, dietary supplements and enhanced foods. The location and use of these substances within domestic dwellings speaks to processes of emplacement and identity in the creation of spaces for care. Our analysis contributes to current understandings of the ways in which objects from ‘outside’ the home come to be woven into relationships, identities and meanings ‘inside’ the home. We demonstrate that, as well as being pharmacological objects, medications are complex, socially embedded objects with histories and memories that are ingrained within contemporary relationships of care and home-making practices

Homeless lives in New Zealand: The case of central Auckland

Homelessness is a pressing and increasingly visible concern in New Zealand. Many people sleeping rough are male and of Maori or Pacific descent. This research focuses on understanding the nature of resilience through the lived experiences of homeless people. To gain insights into cultures of homelessness, a qualitative case study research design was used to engage six homeless people who took part in a series of interviews and photoproduction exercises. Participants are of Maori, Pacific Island, and Pakeha ethnic backgrounds. It therefore may become important to document how homeless people see themselves in relation to their communities of origin and the wider public

Rediscovery of red wolf ghost alleles in canid population along the American Gulf Coast

Rediscovering species once thought to be extinct or on the edge of extinction is rare. Red wolves have been extinct along the American Gulf Coast since 1980, with their last populations found in coastal Louisiana and Texas. We report the rediscovery of red wolf ghost alleles in a canid population on Galveston Island, Texas. We analyzed over 7000 single nucleotide polymorphisms (SNPs) in 60 canid representatives from all legally recognized North American Canis species and two phenotypically ambiguous canids from Galveston Island. We found notably high Bayesian cluster assignments of the Galveston canids to captive red wolves with extensive sharing of red wolf private alleles. Today, the only known extant wild red wolves persist in a reintroduced population in North Carolina, which is dwindling amongst political and taxonomic controversy. Our rediscovery of red wolf ancestry after almost 40 years introduces both positive opportunities for additional conservation action and difficult policy challenges