Gender and cycling in Sydney : a gender perspective of cycling : space claiming and infrastructure use and preference

The purpose of this thesis is to understand the processes of space-claiming and re-negotiations of citizenship which cyclists encounter and engender in Sydney. Additionally, to gain a gender perspective on the cycling-related built environment. Urban cycling is gaining prevalence in planning and policy discourses both nationally and internationally, as governments design, plan, and manage sustainable cities. Cycling has well documented health, social, economic, and environmental benefits, and can form part of a holistic approach to planning sustainable cities. In order to increase cycling participation rates, Councils across Sydney are currently retrofitting the existing city with cycling infrastructure. The introduction of cycling policies at all levels of government in Australia, and the subsequent implementation of physical infrastructure, has gone some way to legitimising cycling and increasing Cycling participation rates. Women have been identified as the biggest market to increase Cycling participation rates. Yet female cyclists remain under-represented and their experiences under-researched in Sydney. To date there has been little ethnographic research on the infrastructure preferences of users or the experiences of female cyclists. This research focuses on Sydneysiders who currently cycle, paying particular attention to the women’s urban experience. This thesis adopted quantitative and qualitative research methodologies to build a robust image of cycling in Sydney. A thorough review of theoretical and practical discourses identified best practice and innovative research methodologies. Primary data about cycling practices, experiences, and infrastructure preferences were obtained through a web-based survey of 357 cyclists (38% female), two discussion group sessions comprising 20 cyclists (9 males and 11 females), and a Nelessen-style Visual Preference Survey. The research found that participants preferred ideal cycling infrastructure options which offered; the most or more space, visibility, clear sight lines, an attractive street-scape, minimal obstacles, and good quality surface-treatments. Analysis of personal cycling narratives found that cyclists and cycling need to be legitimized and normalised in urban areas in order to encourage participation. These cycling narratives emphasized the need to improve women's rights to the physical and social spaces of the cycling city on numerous levels. The research also found that space-claiming is achieved in different ways by men and women. Findings provide evidence of the diversity of cyclists in Sydney, a deeper understanding of their wide-ranging needs, and inform a gender perspective of contemporary urban cycling. The thesis provides policy recommendations to the City of Sydney Council to help increase female cycling participation rates in Sydney, emphasizing the women’s right to the city. Although this study was based in Sydney, it is transferable to other urbanised areas of Australia that are retrofitting for cycling

Criminal law and the effects of alcohol and other drugs: a national study of the significance of intoxication in Australian legislation

Recent years have seen intense media scrutiny, concerted policy discussion and significant law reform on the relationship between the consumption of alcohol (and other drugs) and the commission of criminal offences. Much of the debate has been dominated by the view that, particularly for crimes of violence, the state of \u27intoxication\u27 produced by the consumption of alcohol and other drugs (\u27AOD\u27) should be regarded as an aggravating factor that adds to the seriousness of the harm done and warrants additional punishment. Some recent legislative reform measures have unambiguously embraced this position. As important as it is, treating intoxication as an aggravating factor is, in fact, only one of the ways in which Australian criminal law attaches significance to AOD consumption. We are currently undertaking a large-scale study of the \u27knowledges\u27 and assumptions about the relationship between intoxication and violence (and other offending and anti-social behaviours) that are reflected in Australian criminal laws. Our project compares legislative and judicial knowledges on \u27intoxication\u27 with scientific and social scientific expert knowledges on the effects of AOD, and the relationship between AOD consumption and violence and other criminal offending. It maps and assesses the multiple ways in which Australian criminal laws attach significance to the attribute of intoxication, and investigates the effects these approaches may have in practice. We aim to facilitate enhanced clarity, consistency and integrity in laws that attach penal significance to the fact of a person\u27s intoxication, and improve the criminal law\u27s capacity to meet the needs of the community with respect to the attribution of criminal responsibility for AOD-related anti-social behaviour, harms and risks

Digital pulse actuated flow control on a centrifugal disc towards multiparameter water quality monitoring

In this paper we present a novel dissolvable film (DF) based valving architecture for use on the centrifugal microfluidic platform. We seal fluidic reservoirs on a disc substrate with a series of these valves such that, by pulsing the spin rate, the next valve in the series is opened. Thus centrifugal flow control advances from ‘analogue’ scheme, where valves are successively opened by incremental steps of the rotational frequency, to a ‘digital pulse’ based method. The performance of these valves is demonstrates through a disc designed towards multi-parameter water quality monitoring

An Analysis of Factors Associated With Older Workers’ Employment Participation and Preferences in Australia

Australian government and organizational age-management policies continue to target employment participation among older workers in light of an aging population. Typically, efforts to reduce early retirement among older workers have focused on well-established factors, including the promotion of worker health, reducing injury, supporting caregivers, reducing age discrimination and enhancing skill development. This research extends on the former approach by examining established factors along with important emerging factors, namely work-life conflict, work centrality and person-job fit. Additionally, the research analyses the effects of gender and financial pressure on older workers’ employment participation and preferences. Logistic regression analysis of cross-sectional survey data involving 1,504 Australians aged 45–65, revealed that two established factors, physical health and caregiving, and all three emerging factors were associated with employment participation and preferences to be employed. However, important variations on the basis of gender and financial pressure were also identified. Caregiving was more strongly associated with the preference to remain employed for men (OR = 0.2.54, p < 0.01) than women (OR = 1.03, ns) and person-job fit was more strongly associated with the preference to remain employed for women (OR = 1.64, p < 0.001) than men (OR = 0.91, ns). Work-life conflict was more strongly associated with the preference to leave employment for those reporting limited financial pressure (OR = 0.60, p < 0.001) compared to those in poorer financial circumstances (OR = 0.87, ns). These findings suggest that organizational age management policies should focus on both established and emerging factors, particularly the provision of flexible working conditions and improving the psychosocial work environment. However, such efforts should carefully consider the different needs of men and women, and those under varying levels of financial stress. With respect to government policy to promote employment participation, the findings support a stronger focus on improving physical and psychosocial work conditions rather than increasing the pension eligibility age. This may require further collaboration between government and employers

Environmental and microbial controls on microbial necromass recycling, an important precursor for soil carbon stabilization

There is an emerging consensus that microbial necromass carbon is the primary constituent of stable soil carbon, yet the controls on the stabilization process are unknown. Prior to stabilization, microbial necromass may be recycled by the microbial community. We propose that the efficiency of this recycling is a critical determinant of soil carbon stabilization rates. Here we explore the controls on necromass recycling efficiency in 27 UK grassland soils using stable isotope tracing and indicator species analysis. We found that recycling efficiency was unaffected by land management. Instead, recycling efficiency increased with microbial growth rate on necromass, and was highest in soils with low historical precipitation. We identified bacterial and fungal indicators of necromass recycling efficiency, which could be used to clarify soil carbon stabilization mechanisms. We conclude that environmental and microbial controls have a strong influence on necromass recycling, and suggest that this, in turn, influences soil carbon stabilization

The Chandra XBootes Survey - III: Optical and Near-IR Counterparts

The XBootes Survey is a 5-ks Chandra survey of the Bootes Field of the NOAO Deep Wide-Field Survey (NDWFS). This survey is unique in that it is the largest (9.3 deg^2), contiguous region imaged in X-ray with complementary deep optical and near-IR observations. We present a catalog of the optical counterparts to the 3,213 X-ray point sources detected in the XBootes survey. Using a Bayesian identification scheme, we successfully identified optical counterparts for 98% of the X-ray point sources. The optical colors suggest that the optically detected galaxies are a combination of z<1 massive early-type galaxies and bluer star-forming galaxies whose optical AGN emission is faint or obscured, whereas the majority of the optically detected point sources are likely quasars over a large redshift range. Our large area, X-ray bright, optically deep survey enables us to select a large sub-sample of sources (773) with high X-ray to optical flux ratios (f_x/f_o>10). These objects are likely high redshift and/or dust obscured AGN. These sources have generally harder X-ray spectra than sources with 0.1<f_x/f_o<10. Of the 73 X-ray sources with no optical counterpart in the NDWFS catalog, 47 are truly optically blank down to R~25.5 (the average 50% completeness limit of the NDWFS R-band catalogs). These sources are also likely to be high redshift and/or dust obscured AGN.Comment: 19 pages, 13 figures, ApJ accepted. Catalog can be found at: http://www.noao.edu/noao/noaodeep or ftp://archive.noao.edu/pub/catalogs/xbootes

Exploring common stressors in physical education

Daily stressors, or hassles, refer to the everyday environmental demands that constitute a threat or challenge, or exceed an individual’s biological or psychological capacities (Cohen et al., 1995). Increasing evidence suggests that daily stressors have a significant impact on adolescents’ educational outcomes, for example, performance, wellbeing and negative attitudes toward school, however there is limited research examining the concept of common stressors in PE lessons. As early-adolescence is a developmental period associated with decreased engagement in PE, it is important to identify the environmental stressors that may be associated with increased disengagement. The study comprised 54 secondary school students and six PE teachers from five schools in the English Midlands. Semi-structured focus groups were conducted and a thematic analysis was applied to interview transcripts. Three higher order themes were identified from the data: the social environment, the physical and organisational environment, and the performance environment. Common stressors within the social environment included, interpersonal transactions between peers, differences in effort levels during PE, and working outside one’s peer group. Stressors within the physical and organisational environment consisted of, environmental situations within the changing facilities and the availability of activities. Finally, performance environment stressors included, situations involving the difficult acquisition of physical skills, and situations where physical appearance and physical competencies were exposed. The study extends previous findings by identifying potentially threatening and frustrating, environmental demands that have not been identified in the previous literature. The current study is the first to explore the typical stressors that are experienced by students in PE

Sticky Dead Microbes: rapid abiotic retention of microbial necromass in soil

Microbial necromass dominates soil organic matter. Recent research on necromass and soil carbon storage has focused on necromass production and stabilization mechanisms but not on the mechanisms of necromass retention. We present evidence from soil incubations with stable-isotope labeled necromass that abiotic adsorption may be more important than biotic immobilization for short-term necromass retention. We demonstrate that necromass adsorbs not only to mineral surfaces, but may also interact with other necromass. Furthermore, necromass cell chemistry alters necromass-necromass interaction, with more bacterial tracer retained when there is yeast necromass present. These findings suggest that the adsorption and abiotic interaction of microbial necromass and its functional properties, beyond chemical stability, deserve further investigation in the context of soil carbon sequestration

The impact of human EGFR kinase domain mutations on lung tumorigenesis and in vivo sensitivity to EGFR-targeted therapies

SummaryTo understand the role of human epidermal growth factor receptor (hEGFR) kinase domain mutations in lung tumorigenesis and response to EGFR-targeted therapies, we generated bitransgenic mice with inducible expression in type II pneumocytes of two common hEGFR mutants seen in human lung cancer. Both bitransgenic lines developed lung adenocarcinoma after sustained hEGFR mutant expression, confirming their oncogenic potential. Maintenance of these lung tumors was dependent on continued expression of the EGFR mutants. Treatment with small molecule inhibitors (erlotinib or HKI-272) as well as prolonged treatment with a humanized anti-hEGFR antibody (cetuximab) led to dramatic tumor regression. These data suggest that persistent EGFR signaling is required for tumor maintenance in human lung adenocarcinomas expressing EGFR mutants

Direct isotopic evidence of biogenic methane production and efflux from beneath a temperate glacier

The base of glaciers and ice sheets provide environments suitable for the production of methane. High pressure conditions beneath the impermeable ‘cap’ of overlying ice promote entrapment of methane reserves that can be released to the atmosphere during ice thinning and meltwater evacuation. However, contemporary glaciers and ice sheets are rarely accounted for as methane contributors through field measurements. Here, we present direct field-based evidence of methane production and release from beneath the Icelandic glacier Sólheimajökull, where geothermal activity creates sub-oxic conditions suited to methane production and preservation along the meltwater flow path. Methane production at the glacier bed (48 tonnes per day, or 39 mM CH4 m-2 day-1), and evasion to the atmosphere from the proglacial stream (41 tonnes per day, or 32 M CH4 m-2 day-1) indicates considerable production and release to the atmosphere during the summer melt season. Isotopic signatures (-60.2 ‰ to -7.6 ‰ for δ13CCH4 and -324.3 ‰ to +161.1 ‰ for DCH4), support a biogenic signature within waters emerging from the subglacial environment. Temperate glacial methane production and release may thus be a significant and hitherto unresolved contributor of a potent greenhouse gas to the atmosphere