The Interaction of High-Speed Turbulence with Flames: Global Properties and Internal Flame Structure

We study the dynamics and properties of a turbulent flame, formed in the presence of subsonic, high-speed, homogeneous, isotropic Kolmogorov-type turbulence in an unconfined system. Direct numerical simulations are performed with Athena-RFX, a massively parallel, fully compressible, high-order, dimensionally unsplit, reactive-flow code. A simplified reaction-diffusion model represents a stoichiometric H2-air mixture. The system being modeled represents turbulent combustion with the Damkohler number Da = 0.05 and with the turbulent velocity at the energy injection scale 30 times larger than the laminar flame speed. The simulations show that flame interaction with high-speed turbulence forms a steadily propagating turbulent flame with a flame brush width approximately twice the energy injection scale and a speed four times the laminar flame speed. A method for reconstructing the internal flame structure is described and used to show that the turbulent flame consists of tightly folded flamelets. The reaction zone structure of these is virtually identical to that of the planar laminar flame, while the preheat zone is broadened by approximately a factor of two. Consequently, the system evolution represents turbulent combustion in the thin-reaction zone regime. The turbulent cascade fails to penetrate the internal flame structure, and thus the action of small-scale turbulence is suppressed throughout most of the flame. Finally, our results suggest that for stoichiometric H2-air mixtures, any substantial flame broadening by the action of turbulence cannot be expected in all subsonic regimes.Comment: 30 pages, 9 figures; published in Combustion and Flam

Birmingham’s Eastside story: making steps towards sustainability?

Sustainability has come to play a dominant discursive role in the UK planning system, particularly relating to urban regeneration. The purpose of this paper is to evaluate the role that sustainability plays in a major regeneration programme, known as Eastside, currently underway in Birmingham, the UK. That this £6 billion redevelopment is now widely talked about by such key players as Birmingham City Council and the Regional Development Agency, Advantage West Midlands, as having a central sustainability agenda points to the growing importance of the ideal of sustainability in planning and regeneration agendas. In this paper, we investigate in detail how and why sustainability has become part of the planning discourse for Eastside and critically evaluate what impact, if any, this is having on public policy decision-making

Conceptualising sustainability in UK urban Regeneration: a discursive Formation

Despite the wide usage and popular appeal of the concept of sustainability in UK policy, it does not appear to have challenged the status quo in urban regeneration because policy is not leading in its conceptualisation and therefore implementation. This paper investigates how sustainability has been conceptualised in a case-based research study of the regeneration of Eastside in Birmingham, UK, through policy and other documents, and finds that conceptualisations of sustainability are fundamentally limited. The conceptualisation of sustainability operating within urban regeneration schemes should powerfully shape how they make manifest (or do not) the principles of sustainable development. Documents guide, but people implement regeneration—and the disparate conceptualisations of stakeholders demonstrate even less coherence than policy. The actions towards achieving sustainability have become a policy ‘fix’ in Eastside: a necessary feature of urban policy discourse that is limited to solutions within market-based constraints

True and intentionally fabricated memories

The aim of the experiment reported here was to investigate the processes underlying the construction of truthful and deliberately fabricated memories. Properties of memories created to be intentionally false - fabricated memories - were compared to properties of memories believed to be true - true memories. Participants recalled and then wrote or spoke true memories and fabricated memories of everyday events. It was found that true memories were reliably more vivid than fabricated memories and were nearly always recalled from a first person perspective. In contrast, fabricated differed from true memories in that they were judged to be reliably older, were more frequently recalled from a third person perspective, and linguistic analysis revealed that they required more cognitive effort to generate. No notable differences were found across modality of reporting. Finally, it was found that, intentionally fabricated memories were created by recalling and then ‘editing’ true memories. Overall, these findings show that true and fabricated memories systematically differ, despite the fact that both are based on true memories

Towards a new planning history and practice

Planning in settler-colonial countries is always taking place on the lands of Indigenous peoples. While Indigenous rights, identity and cultural values are increasingly being discussed within planning, its mainstream accounts virtually ignore the colonial roots and legacies of the discipline’s assumptions, techniques and methods. This ground-breaking book exposes the imperial origins of the planning canon, profession and practice in the settler-colonial country of Australia. By documenting the role of planning in the history of Australia’s relations with Indigenous peoples, the book maps the enduring effects of colonisation. It provides a new historical account of colonial planning practices and rewrites the urban planning histories of major Australian cities. Contemporary land rights, native title and cultural heritage frameworks are analysed in light of their critical importance to planning practice today, with detailed case illustrations. In reframing Australian planning from a postcolonial perspective, the book shatters orthodox accounts, revising the story that planning has told itself for over 100 years. New ways to think and practise planning in Indigenous Australia are advanced. Planning in Indigenous Australia makes a major contribution towards the decolonisation of planning. It is essential reading for students and teachers in tertiary planning programmes, as well as those in geography, development studies, postcolonial studies, anthropology and environmental management. It is also vital reading for professional planners in the public, private and community sectors.Griffith Sciences, Australian Rivers InstituteNo Full Tex

Measurement of the quasi-elastic axial vector mass in neutrino-oxygen interactions

The weak nucleon axial-vector form factor for quasi-elastic interactions is determined using neutrino interaction data from the K2K Scintillating Fiber detector in the neutrino beam at KEK. More than 12,000 events are analyzed, of which half are charged-current quasi-elastic interactions nu-mu n to mu- p occurring primarily in oxygen nuclei. We use a relativistic Fermi gas model for oxygen and assume the form factor is approximately a dipole with one parameter, the axial vector mass M_A, and fit to the shape of the distribution of the square of the momentum transfer from the nucleon to the nucleus. Our best fit result for M_A = 1.20 \pm 0.12 GeV. Furthermore, this analysis includes updated vector form factors from recent electron scattering experiments and a discussion of the effects of the nucleon momentum on the shape of the fitted distributions.Comment: 14 pages, 10 figures, 6 table

Measurement of Branching Fraction and Dalitz Distribution for B0->D(*)+/- K0 pi-/+ Decays

We present measurements of the branching fractions for the three-body decays B0 -> D(*)-/+ K0 pi^+/-$and their resonant submodes$B0 -> D(*)-/+ K*+/- using a sample of approximately 88 million BBbar pairs collected by the BABAR detector at the PEP-II asymmetric energy storage ring. We measure: B(B0->D-/+ K0 pi+/-)=(4.9 +/- 0.7(stat) +/- 0.5 (syst)) 10^{-4} B(B0->D*-/+ K0 pi+/-)=(3.0 +/- 0.7(stat) +/- 0.3 (syst)) 10^{-4} B(B0->D-/+ K*+/-)=(4.6 +/- 0.6(stat) +/- 0.5 (syst)) 10^{-4} B(B0->D*-/+ K*+/-)=(3.2 +/- 0.6(stat) +/- 0.3 (syst)) 10^{-4} From these measurements we determine the fractions of resonant events to be : f(B0-> D-/+ K*+/-) = 0.63 +/- 0.08(stat) +/- 0.04(syst) f(B0-> D*-/+ K*+/-) = 0.72 +/- 0.14(stat) +/- 0.05(syst)Comment: 7 pages, 3 figures submitted to Phys. Rev. Let

Exploring the Usefulness of Pre-Visit Materials for Children with Autism at a Public Museum

Abstract Children with autism spectrum disorder (ASD) participate in community-based settings at lower rates than typically developing children. Museums provide a structured, predictable, and supportive place for children with ASD to learn. Visiting a museum may create unique challenges for children with ASD and their families. Sensory processing disorder (SPD) is a common barrier to participation that makes it difficult to process information coming in through the senses. For children who are easily overstimulated, crowds, noise, and long lines can be a source of anxiety and stress. Providing pre-visit materials such as social stories, accessibility maps, and communication books can support engagement in the museum setting. This study explored the usefulness of pre-visit materials for children with ASD who attended a low sensory event at a public museum. Data were collected during interviews with 22 parents and care partners. All participants found the pre-visit materials useful before and during the museum visit. Participants provided recommendations for improvement including developing multiple formats (e.g., audio, video), different languages, and limiting the pictures per page. This study highlights the unique value of occupational therapy in a community setting. Occupational therapists consider how features of the environment may support or limit participation. The pre-visit materials developed in this study may help museums offer more inclusive experiences to children with ASD and their families. Partnerships with disciplines such as occupational therapy may help museums and other community organizations welcome visitors of all abilities. Plain Language Summary Museums are key educational resources in the community. Families of children with autism spectrum disorder (ASD) face unique challenges to participating in museum settings. This study explored the usefulness of pre-visit materials including a social story, accessibility map, and communication book. These materials were developed through a partnership between a public museum, occupational therapy graduate program, and 22 parents and care partners of children with ASD. All participants found the pre-visit materials useful for improving participation in a museum visit. This study highlights the unique value of occupational therapy at a museum. The materials developed for this study could be replicated to promote a more inclusive experience in other community settings. Partnering with disciplines experienced in working with people with disabilities can assist in creating welcoming environments for people of all abilities. Additional research is needed to explore the benefits of collaborative partnerships between community organizations and occupational therapy programs

Cyan Moon crew preparation for the Sydney To Hobart Yacht Race March 2023

The Collaborative Evaluation & Research Centre (formally CERG) evaluated the crew’s experiences pre and post yacht events using a mixed methods approach. The Cyan yacht had a crew of 12 and competed in a number of events in the racing calendar leading up to the Sydney to Hobart race in January 2023. This was the first time that this boat and many of the crew competed in the Sydney to Hobart yacht race