Dance hall

A collaborative residency resulting in three performance presentations as part of an Interdisciplinary Artist Hothouse/Festival produced by Vitalstatistix.

On the acoustic performance of a precast panel system made from environmentally sustainable concrete : application in sports hall buildings

The use of green building materials and products promotes conservation of non-renewable resources and help reduce associated environmental impacts. This article reports the acoustical performance of a precast panel system made largely from concrete waste material. Two major applications for such panels that are being investigated currently include walls and claddings to industrial and commercial buildings and sound barriers for urban freeways. In this study, the application of the concrete panels for optimizing reverberation time (RT) in sports halls is tested using numerical simulations. As an innovative approach, additional layers are added to the precast panels to improve their appearance. The absorption coefficients of the concrete panel improved significantly with the architectural finish. The material can be tuned according to the required peak frequency. The architectural finish helped reduce the RT for frequencies above 500 Hz. Its application to different types of ceilings revealed that the RT of curved ceiling reduced up to 40% compared to flat and hybrid ceiling. A comparison of wall and ceiling modifications in small, medium and large sports halls showed that medium-sized halls have better acoustical performance compared with small and large halls with ceiling as well as wall treatment.

Tracking single bubble in Hall-Héroult aluminium cell : an experimental and numerical study

In simulations of the hydrodynamics of the multiphase flow in gas– liquid systems with finite sizes of bubbles, the important thing is to compute explicitly the time evolution of the gas–liquid interface in many engineering applications. The most commonly used methods representing this approach are: the volume of fluid and the phase field methods. The later has gained significant interest because of its capability of performing numerical computations on a fixed Cartesian grid without having to parametrise these objects (Eulerian approach) and at the same time it allows to follow the interface ( for example bubble’s shape) that change the topology. In this paper, both numerical (phase field method) and experimental results for the bubble shapes underneath a downward facing plane is presented. Experiments are carried out to see the bubble sliding motion underneath a horizontal and inclined anode. It is assumed that the bubble formed under the anode surface is deformed (flattened) due to buoyant field before it goes around the anode corner. The bubble elongates to form a tail-like shape. The change in shape of the bubble is almost instantaneous and has a significant effect on the localised hydrodynamics around the bubble, which could influence the dynamics of the flow patterns in the Hall–Héroult cell. This deformation is the main cause of the bubble wake and the induced flow field in the aluminium cell. Various parameters such as bubble size, deformation and its sliding mechanism at different surface tensions are discussed and compared with experimental results.

Jocoserious ‘ignorance shifting’ or ‘aestho-psycho-eugenics’?: interrogating Joseph Furphy’s Bulletin ‘apprenticeship'

Annotating Joseph Furphy’s first publication for the Bulletin raises some intriguing questions: to what extent was Furphy the product of the Bulletin writing academy, the late nineteenth century equivalent of a writing course, or to what extent was his talent sui generis? I intend to put this question to an extreme test, by reading closely his first published contribution to the Bulletin in 1889, ‘The Mythical Sundowner’.

Interview with Joseph Kata

Joseph Kata is a Papua New Guinean who studied at the University of Wollongong in 1992-1993. He studied on an Australian government scholarship and completed an MBA. He has since contributed to the development of the University of Goroka and worked for several NGOs. The interview was conducted in English on 22 January 2015 by Dr. Jonathan Ritchie of Deakin University and Dr. Musawe Sinebare of the Pacific Adventist University. This set comprises: an interview recording, a timed summary, and a photograph.

Student Joseph Germer at microphone at closed-circuit TV demonstration

This is one of a series of photographs accompanying a press release by the New York Trade School announcing the development and demonstration of a new technique in closed-circuit TV. In this work student Joseph Germer asks a question about the demonstration. Original caption reads, "Microphone goes to student Joseph Germer, who asks a question about another phase of the demonstration." Black and white photograph with caption.