title: Editorial: Entrepreneurship research: follow the yellow-brick road?

authors: Corner, Patricia

subjects: entrepreneurship

abstract: If entrepreneurship theory, research, and practice represent Oz at the culmination of the yellow-brick road, Dorothy and her companions have much company on their journey. For example, one source estimates that 460 million people worldwide either start a new business or become the owners of new businesses annually (Reynolds et al. 2002). Moreover, entrepreneurship is the fastest growing field of study in tertiary education in North America and Europe (Bygrave 2004) and fifteen specialized scholarly journals disseminate research on the topic globally. Within the policy-making arena, the governments of both Australia and New Zealand seek to promote entrepreneurship as an engine of economic growth. This special issue on entrepreneurship thus appears to be timely and can help to take stock of this topic within our Australasian context. It can also serve as a baseline from which to consider directions for future research in this important area of inquiry.

text: Editorial: Entrepreneurship research: follow the yellow-brick road? If entrepreneurship theory, research, and practice represent Oz at the culmination of the yellow-brick road, Dorothy and her companions have much company on their journey. For example, one source estimates that 460 million people worldwide either start a new business or become the owners of new businesses annually (Reynolds et al. 2002). Moreover, entrepreneurship is the fastest growing field of study in tertiary education in North America and Europe (Bygrave 2004) and fifteen specialized scholarly journals disseminate research on the topic globally. Within the policy-making arena, the governments of both Australia and New Zealand seek to promote entrepreneurship as an engine of economic growth. This special issue on entrepreneurship thus appears to be timely and can help to take stock of this topic within our Australasian context. It can also serve as a baseline from which to consider directions for future research in this important area of inquiry.

year: 2007

title: Review: Denitrifying bioreactors—An approach for reducing nitrate loads to receiving waters

authors: Schipper, Louis A.

subjects: denitrification

abstract: Low-cost and simple technologies are needed to reduce watershed export of excess nitrogen to sensitive aquatic ecosystems. Denitrifying bioreactors are an approach where solid carbon substrates are added into the flow path of contaminated water. These carbon (C) substrates (often fragmented wood-products) act as a C and energy source to support denitrification; the conversion of nitrate (NO³⁻) to nitrogen gases. Here, we summarize the different designs of denitrifying bioreactors that use a solid C substrate, their hydrological connections, effectiveness, and factors that limit their performance. The main denitrifying bioreactors are: denitrification walls (intercepting shallow groundwater), denitrifying beds (intercepting concentrated discharges) and denitrifying layers (intercepting soil leachate). Both denitrifcation walls and beds have proven successful in appropriate field settings with NO³⁻ removal rates generally ranging from 0.01 to 3.6 g N m⁻³ day⁻¹ for walls and 2–22 g N m⁻³ day⁻¹  for beds, with the lower rates often associated with nitrate-limitations. Nitrate removal is also limited by the rate of C supply from degrading substrate and removal is operationally zero-order with respect to NO³⁻ concentration primarily because the inputs of NO³⁻ into studied bioreactors have been generally high. In bioreactors where NO³⁻ is not fully depleted, removal rates generally increase with increasing temperature. Nitrate removal has been supported for up to 15 years without further maintenance or C supplementation because wood chips degrade sufficiently slowly under anoxic conditions. There have been few field-based comparisons of alternative C substrates to increase NO³⁻ removal rates but laboratory trials suggest that some alternatives could support greater rates of NO³⁻ removal (e.g., corn cobs and wheat straw). Denitrifying bioreactors may have a number of adverse effects, such as production of nitrous oxide and leaching of dissolved organic matter (usually only for the first few months after construction and start-up). The relatively small amount of field data suggests that these problems can be adequately managed or minimized. An initial cost/benefit analysis demonstrates that denitrifying bioreactors are cost effective and complementary to other agricultural management practices aimed at decreasing nitrogen loads to surface waters. We conclude with recommendations for further research to enhance performance of denitrifying bioreactors.

text: Review: Denitrifying bioreactors—An approach for reducing nitrate loads to receiving waters Low-cost and simple technologies are needed to reduce watershed export of excess nitrogen to sensitive aquatic ecosystems. Denitrifying bioreactors are an approach where solid carbon substrates are added into the flow path of contaminated water. These carbon (C) substrates (often fragmented wood-products) act as a C and energy source to support denitrification; the conversion of nitrate (NO³⁻) to nitrogen gases. Here, we summarize the different designs of denitrifying bioreactors that use a solid C substrate, their hydrological connections, effectiveness, and factors that limit their performance. The main denitrifying bioreactors are: denitrification walls (intercepting shallow groundwater), denitrifying beds (intercepting concentrated discharges) and denitrifying layers (intercepting soil leachate). Both denitrifcation walls and beds have proven successful in appropriate field settings with NO³⁻ removal rates generally ranging from 0.01 to 3.6 g N m⁻³ day⁻¹ for walls and 2–22 g N m⁻³ day⁻¹  for beds, with the lower rates often associated with nitrate-limitations. Nitrate removal is also limited by the rate of C supply from degrading substrate and removal is operationally zero-order with respect to NO³⁻ concentration primarily because the inputs of NO³⁻ into studied bioreactors have been generally high. In bioreactors where NO³⁻ is not fully depleted, removal rates generally increase with increasing temperature. Nitrate removal has been supported for up to 15 years without further maintenance or C supplementation because wood chips degrade sufficiently slowly under anoxic conditions. There have been few field-based comparisons of alternative C substrates to increase NO³⁻ removal rates but laboratory trials suggest that some alternatives could support greater rates of NO³⁻ removal (e.g., corn cobs and wheat straw). Denitrifying bioreactors may have a number of adverse effects, such as production of nitrous oxide and leaching of dissolved organic matter (usually only for the first few months after construction and start-up). The relatively small amount of field data suggests that these problems can be adequately managed or minimized. An initial cost/benefit analysis demonstrates that denitrifying bioreactors are cost effective and complementary to other agricultural management practices aimed at decreasing nitrogen loads to surface waters. We conclude with recommendations for further research to enhance performance of denitrifying bioreactors.

year: 2010

title: Ki te kapu o takau ringa - In the Hollow of my Hand: Wānanga based Photographic Approaches to Place Representation

authors: Hill, Rodrigo

abstract: Ka matakitaki iho au ki te riu o Waikato
 Ano nei hei kapo kau ake maaku; 
Ki te kapu o taku ringa, 
“I look down on the valley of Waikato, 
As though to hold it  
In the hollow of my hand.
 The words above are from Māori King Tawhiao’s maioha (song poem), a representation of his love for his homelands of the Waikato and the region known today as the King Country. Now imagine a large-scale photograph: a close-up of cupped hands, holding an object carefully. The phrase above informs Professor Tom Roa and Dr. Rodrigo Hill’s current research project titled ‘Te Nehenehenui - The Ancient Enduring Beauty in the Great Forest of the King Country’. With this project still in its early stages the research team will present early and ongoing creative practice developments, discussions and ideas about photography practice, wānanga, and place representation. The project promotes the use of wānanga (forums and meetings of focus groups through which knowledge - mātauranga - is discussed and passed on) and other reflective practices, engaging with and led by mana whenua (guardians of the land) providing a thread which will guide the construction of the photographic images. The research fuses wānanga, that is Mātauranga Māori (Māori Knowledge), and photography practice in novel ways, aiming to move away and challenge core photographic conventions and Eurocentric modes of place representation. Roa and Hill understand wānanga as a fluid practice of engagement which can be with mana whenua or with the taiao - the environment - either by itself or with the mana whenua. This is the essence of Kaupapa Māori Research.

text: Ki te kapu o takau ringa - In the Hollow of my Hand: Wānanga based Photographic Approaches to Place Representation Ka matakitaki iho au ki te riu o Waikato
 Ano nei hei kapo kau ake maaku; 
Ki te kapu o taku ringa, 
“I look down on the valley of Waikato, 
As though to hold it  
In the hollow of my hand.
 The words above are from Māori King Tawhiao’s maioha (song poem), a representation of his love for his homelands of the Waikato and the region known today as the King Country. Now imagine a large-scale photograph: a close-up of cupped hands, holding an object carefully. The phrase above informs Professor Tom Roa and Dr. Rodrigo Hill’s current research project titled ‘Te Nehenehenui - The Ancient Enduring Beauty in the Great Forest of the King Country’. With this project still in its early stages the research team will present early and ongoing creative practice developments, discussions and ideas about photography practice, wānanga, and place representation. The project promotes the use of wānanga (forums and meetings of focus groups through which knowledge - mātauranga - is discussed and passed on) and other reflective practices, engaging with and led by mana whenua (guardians of the land) providing a thread which will guide the construction of the photographic images. The research fuses wānanga, that is Mātauranga Māori (Māori Knowledge), and photography practice in novel ways, aiming to move away and challenge core photographic conventions and Eurocentric modes of place representation. Roa and Hill understand wānanga as a fluid practice of engagement which can be with mana whenua or with the taiao - the environment - either by itself or with the mana whenua. This is the essence of Kaupapa Māori Research.

year: 2023-10-25