The Sydney front recalled

This chapter provides a critical account of the Sydney Front performance group's 1987 production of John Laws/Sade.

Thermal performance analysis of earth pipe cooling system for subtropical climate

Energy crisis is one of the major obstacles for human development. There are on-going researches to overcome this for a sustainable environment and economy. Passive air cooling system of earth pipe cooling is seen as a viable energy efficient technology for hot and humid subtropical climates. It can be an attractive economical alternative to conventional cooling since there are no compressors or any habitual mechanical unit. It utilizes earth’s near constant underground temperature to cool air for residential, agricultural or industrial uses. This paper reports the thermal performance of earth pipe cooling technology for a hot and humid subtropical climatic zone in Queensland, Australia. A series of pipes buried underground were used in order to increase the cooling performance of the system. To measure the thermal performance, a thermal model was developed for the earth pipe cooling system and simulated using ANSYS Fluent. Data were collected from two modelled rooms built from shipping containers and installed at Central Queensland University, Rockhampton, Australia. The impact of air temperature and velocity on room cooling performance has also been assessed. A significant temperature reduction is seen in this study, which will save energy cost for thermal cooling in buildings.

The limitations of front-end loading in undergraduate university programs

This paper shows how Mead’s theory of emergence can prove explanatory in how the theory-practice gap is co-created and sustained in front-end loading university programs. Taking teacher education as an exemplar, we argue that the trainee teacher encounters different and oft-times conflicting environmental, social and cultural conditions in the two “fields of interaction” of the training program, namely, on-campus work and in-school experience. The argument draws on interview and focus group data collected via a study of first-year graduate teachers of an Australian teacher education program. We conclude that role taking and self-regulated behaviour within the two environmental fields of interaction in front-end loading programs inhibit the trainee professional from exercising the power of agency to implement theory learned at university in practice in the workplace. Further, we propose that Mead’s theory of emergence proves effective in explaining a major limitation of front-end-loaded university programs.

The limitations of front-end loading in undergraduate university programs

This paper shows how Mead’s theory of emergence can prove explanatory in how the theory-practice gap is co-created and sustained in front-end loading university programs. Taking teacher education as an exemplar, we argue that the trainee teacher encounters different and oft-times conflicting environmental, social and cultural conditions in the two “fields of interaction” of the training program, namely, on-campus work and in-school experience. The argument draws on interview and focus group data collected via a study of first-year graduate teachers of an Australian teacher education program. We conclude that role taking and self-regulated behaviour within the two environmental fields of interaction in front-end loading programs inhibit the trainee professional from exercising the power of agency to implement theory learned at university in practice in the workplace. Further, we propose that Mead’s theory of emergence proves effective in explaining a major limitation of front-end-loaded university programs.

Selection of suitable passive cooling strategy for a subtropical climate

Background: Passive cooling system has become an attractive option to design and modify homes to achieve thermal comfort. The system provides cooling through the use of passive processes, which often use heat flow paths that do not exist in conventional or bioclimatic buildings.

The exception to the rule : Retreating ice front makes Bewick's swans Cygnus columbianus bewickii migrate slower in spring than in autumn

In the vast majority of migratory bird species studied so far, spring migration has been found to proceed faster than autumn migration. In spring, selection pressures for rapid migration are purportedly higher, and migratory conditions such as food supply, daylength, and/or wind support may be better than in autumn. In swans, however, spring migration appears to be slower than autumn migration. Based on a comparison of tundra swan Cygnus columbianus tracking data with long-term temperature data from wheather stations, it has previously been suggested that this was due to a capital breeding strategy (gathering resources for breeding during spring migration) and/or to ice cover constraining spring but not autumn migration. Here we directly test the hypothesis that Bewick's swans Cygnus columbianus bewickii follow the ice front in spring, but not in autumn, by comparing three years of GPS tracking data from individual swans with concurrent ice cover data at five important migratory stop-over sites. In general, ice constrained the swans in the middle part of spring migration, but not in the first (no ice cover was present in the first part) nor in the last part. In autumn, the swans migrated far ahead of ice formation, possibly in order to prevent being trapped by an early onset of winter. We conclude that spring migration in swans is slower than autumn migration because spring migration speed is constrained by ice cover. This restriction to spring migration speed may be more common in northerly migrating birds that rely on freshwater resources. © 2013 The Authors.