title: A conceptual framework for the analysis of first-person shooter audio and its potential use for game engines

authors: Grimshaw, Mark

abstract: We introduce and describe a new conceptual framework for the design and analysis of audio for immersive first-person shooter games, and discuss its potential implications for the development of the audio component of game engines. The framework was created in order to illustrate and acknowledge the direct role of in-game audio in shaping player-player interactions and in creating a sense of immersion in the game world. Furthermore, it is argued that the relationship between player and sound is best conceptualized theoretically as an acoustic ecology. Current game engines are capable of game world spatiality through acoustic shading, but the ideas presented here provide a framework to explore other immersive possibilities for game audio through real-time synthesis.

text: A conceptual framework for the analysis of first-person shooter audio and its potential use for game engines We introduce and describe a new conceptual framework for the design and analysis of audio for immersive first-person shooter games, and discuss its potential implications for the development of the audio component of game engines. The framework was created in order to illustrate and acknowledge the direct role of in-game audio in shaping player-player interactions and in creating a sense of immersion in the game world. Furthermore, it is argued that the relationship between player and sound is best conceptualized theoretically as an acoustic ecology. Current game engines are capable of game world spatiality through acoustic shading, but the ideas presented here provide a framework to explore other immersive possibilities for game audio through real-time synthesis.

year: 2008

title: Comparison of earthworm and chemical assays of the bioavailability of aged 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene, 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane, and heavy metals in orchard soils

authors: Gaw, Sally K.

subjects: Bioavailability

abstract: Orchard soils can contain elevated concentrations of 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene (p,p′-DDE), 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane (p,p′-DDT), and heavy metals as a result of historical agrichemical applications. The bioavailability of p,p′-DDE, p,p′-DDT, As, Cd, Cu, and Pb from five field-aged New Zealand orchards and three grazing soils was assessed by using a 28-d bioassay with Aporrectodea caliginosa and chemical assays. Significant relationships were found between total soil and earthworm tissue concentrations for p,p′-DDE (p < 0.001), p,p′-DDT (p < 0.001), Cu (p < 0.001), and Pb (p < 0.01). Two neutral salt solutions, 0.01 M CaCl2 and 1 M NH4NO3, were used as surrogate measures of the bioavailability of heavy metals. Copper was the only heavy metal for which significant correlations were found between neutral-salt-extractable and earthworm tissue concentrations (p < 0.001). Up to 28% of the aged DDT residues were released from the soils by Tenax over a 24-h extraction period. Significant relationships (p < 0.01) between the Tenax-extractable and earthworm tissue concentrations for p,p′-DDE and p,p′-DDT showed that Tenax provides a good surrogate measure of the bioavailability of these compounds to A. caliginosa. Surprisingly, there was a similarly significant relationship (p < 0.001) between the total soil and earthworm tissue concentrations for p,p′-DDE and p,p′-DDT, suggesting that total soil concentrations alone were sufficient to predict uptake by A. caliginosa. These results demonstrate that the aged agrichemical residues in orchard soils, and particularly p,p′-DDE and p,p′-DDT, remain highly bioavailable to A. caliginosa despite decades of weathering and continue to present an environmental risk

text: Comparison of earthworm and chemical assays of the bioavailability of aged 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene, 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane, and heavy metals in orchard soils Orchard soils can contain elevated concentrations of 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene (p,p′-DDE), 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane (p,p′-DDT), and heavy metals as a result of historical agrichemical applications. The bioavailability of p,p′-DDE, p,p′-DDT, As, Cd, Cu, and Pb from five field-aged New Zealand orchards and three grazing soils was assessed by using a 28-d bioassay with Aporrectodea caliginosa and chemical assays. Significant relationships were found between total soil and earthworm tissue concentrations for p,p′-DDE (p < 0.001), p,p′-DDT (p < 0.001), Cu (p < 0.001), and Pb (p < 0.01). Two neutral salt solutions, 0.01 M CaCl2 and 1 M NH4NO3, were used as surrogate measures of the bioavailability of heavy metals. Copper was the only heavy metal for which significant correlations were found between neutral-salt-extractable and earthworm tissue concentrations (p < 0.001). Up to 28% of the aged DDT residues were released from the soils by Tenax over a 24-h extraction period. Significant relationships (p < 0.01) between the Tenax-extractable and earthworm tissue concentrations for p,p′-DDE and p,p′-DDT showed that Tenax provides a good surrogate measure of the bioavailability of these compounds to A. caliginosa. Surprisingly, there was a similarly significant relationship (p < 0.001) between the total soil and earthworm tissue concentrations for p,p′-DDE and p,p′-DDT, suggesting that total soil concentrations alone were sufficient to predict uptake by A. caliginosa. These results demonstrate that the aged agrichemical residues in orchard soils, and particularly p,p′-DDE and p,p′-DDT, remain highly bioavailable to A. caliginosa despite decades of weathering and continue to present an environmental risk

year: 2012

title: Processes of Pakeha change in response to the Treaty of Waitangi

authors: Huygens, Ingrid Louise Maria

subjects: Pakeha change

abstract: The sense of crisis that marks our times may be seen as a crisis for dominant groups whose once-secure hegemony is being challenged by marginalised others. It is in theorising the reply from the dominant group to the voices of the oppressed that existing Western conceptions of social change fall silent. The dominant Pakeha group in Aotearoa New Zealand has used discourses of benign colonisation and harmonious race relations to resist 165 years of communication from indigenous Māori about their oppression and a dishonoured treaty for settlement. My research documents the appearance of the Treaty of Waitangi into the Pakeha consciousness, and the now 30 year-long response by a Pakeha antiracism movement to educate their own cultural group about its agreements. Targeting government, community and social services organisations, activist educators used Freire's (1975) approach of conscientising dialogue to present a more critical view of colonisation, and to encourage participants to consider the complicity of their organisations in ongoing structural and cultural racism.

Based on my membership of local and national networks of activist educators, I was able to organise and facilitate data gathering from three sources to investigate processes of Pakeha change in: (i) unpublished material describing the antiracism and Treaty movement's historical theorising and strategies over 30 years, (ii) a country-wide process of co-theorising among contemporary Treaty educator groups about their work and perceived influence, and (iii) a collection of organisational accounts of Treaty-focused change. The collected records confirmed that a coherent anti-colonial discourse, which I have termed 'Pakeha honouring the Treaty', was in use to construct institutional and constitutional changes in non-government organisations. My interpretation of key elements in a local theory of transforming action included emotional responses to counter-cultural information, collective work for cultural and institutional change and practising a mutually agreed relationship with Māori. I concluded that these emotional, collective and relationship processes in dominant group change were crucial in helping to construct the new conceptual resources of 'affirming Māori authority' and 'striving towards a right relationship with Māori'. These counter-colonial constructions allowed Pakeha a non-resistant and facilitative response to Māori challenge, and enabled a dialogue with Māori about decolonisation. 

By examining in one research programme the genealogy and interdependencies of a new discourse, my research contributes to theorising about the production of new, counter-hegemonic discourses, and confirms the crucial part played by social movements in developing new, liberatory constructions of the social order.

My research calls for further theory-building on (i) emotional and spiritual aspects of transformational learning, (ii) processes involved in consciously-undertaken cultural change by dominant/coloniser groups, and (iii) practising of mutually agreed relationships with indigenous peoples by dominant/coloniser groups. 

My research has implications for theorising how coloniser and dominant groups generally may participate in liberatory social change and decolonisation work, and  the part played by the Western states in the global struggles by indigenous people for recognition of their world-views and aspirations.  

It remains to be seen whether counter-colonial discourses and organisational changes aimed at 'honouring the Treaty' with indigenous peoples will be sufficiently widely adopted to help transform Western dominating cultures and colonial projects. In the meantime, acknowledging and documenting these counter-colonial discourses and their constructions opens up increasing possibilities for constructing, from a history of colonisation, a different future.

text: Processes of Pakeha change in response to the Treaty of Waitangi The sense of crisis that marks our times may be seen as a crisis for dominant groups whose once-secure hegemony is being challenged by marginalised others. It is in theorising the reply from the dominant group to the voices of the oppressed that existing Western conceptions of social change fall silent. The dominant Pakeha group in Aotearoa New Zealand has used discourses of benign colonisation and harmonious race relations to resist 165 years of communication from indigenous Māori about their oppression and a dishonoured treaty for settlement. My research documents the appearance of the Treaty of Waitangi into the Pakeha consciousness, and the now 30 year-long response by a Pakeha antiracism movement to educate their own cultural group about its agreements. Targeting government, community and social services organisations, activist educators used Freire's (1975) approach of conscientising dialogue to present a more critical view of colonisation, and to encourage participants to consider the complicity of their organisations in ongoing structural and cultural racism.

Based on my membership of local and national networks of activist educators, I was able to organise and facilitate data gathering from three sources to investigate processes of Pakeha change in: (i) unpublished material describing the antiracism and Treaty movement's historical theorising and strategies over 30 years, (ii) a country-wide process of co-theorising among contemporary Treaty educator groups about their work and perceived influence, and (iii) a collection of organisational accounts of Treaty-focused change. The collected records confirmed that a coherent anti-colonial discourse, which I have termed 'Pakeha honouring the Treaty', was in use to construct institutional and constitutional changes in non-government organisations. My interpretation of key elements in a local theory of transforming action included emotional responses to counter-cultural information, collective work for cultural and institutional change and practising a mutually agreed relationship with Māori. I concluded that these emotional, collective and relationship processes in dominant group change were crucial in helping to construct the new conceptual resources of 'affirming Māori authority' and 'striving towards a right relationship with Māori'. These counter-colonial constructions allowed Pakeha a non-resistant and facilitative response to Māori challenge, and enabled a dialogue with Māori about decolonisation. 

By examining in one research programme the genealogy and interdependencies of a new discourse, my research contributes to theorising about the production of new, counter-hegemonic discourses, and confirms the crucial part played by social movements in developing new, liberatory constructions of the social order.

My research calls for further theory-building on (i) emotional and spiritual aspects of transformational learning, (ii) processes involved in consciously-undertaken cultural change by dominant/coloniser groups, and (iii) practising of mutually agreed relationships with indigenous peoples by dominant/coloniser groups. 

My research has implications for theorising how coloniser and dominant groups generally may participate in liberatory social change and decolonisation work, and  the part played by the Western states in the global struggles by indigenous people for recognition of their world-views and aspirations.  

It remains to be seen whether counter-colonial discourses and organisational changes aimed at 'honouring the Treaty' with indigenous peoples will be sufficiently widely adopted to help transform Western dominating cultures and colonial projects. In the meantime, acknowledging and documenting these counter-colonial discourses and their constructions opens up increasing possibilities for constructing, from a history of colonisation, a different future.

year: 2007