title: On openness and real exchange rate volatility

authors: Holmes, Mark J.

subjects: openness

abstract: We address the puzzle concerning the inverse relationship between openness and real exchange rate volatility. We argue that the relationship can be explained by increased openness facilitating purchasing power parity. Using New Zealand data, we show that increased openness prolongs real exchange regimes characterised by fast mean-reversion and low volatility.

text: On openness and real exchange rate volatility We address the puzzle concerning the inverse relationship between openness and real exchange rate volatility. We argue that the relationship can be explained by increased openness facilitating purchasing power parity. Using New Zealand data, we show that increased openness prolongs real exchange regimes characterised by fast mean-reversion and low volatility.

year: 2008

title: The metabolism of parts of seeds during early germination

authors: Collins, Desmond Michael

abstract: There have been few studies of the metabolism of germinating seeds during the first minutes and hours of imbibition. This is partly because most biochemical techniques are unsuitable for studying these biological systems. One technique that has been developed for studying such systems involves using tritiated water as a tracer. In this technique the biological material is placed in tritiated water for a known time and then extracted. The extracts are chromatographed on paper and the tritium labelled compounds are detected by scintillation radioautography. The technique has already been successfully applied to the study of intact seeds of two species of dicotyledons. In this present work the technique was used to study the metabolic development during the first six hours of imbibition of the different parts of seeds from four species: a monocotyledon (barley), two dicotyledons (Phaseolus vulgaris and castor oil), and a gymnosperm (Pinus radiata). The seeds of these species are representative of the majority of seeds in the plant world. The results show that performing experiments on excised parts of seeds provides additional information to that obtained from using intact seeds. The most important conclusion of this work is that the axes and embryos of all seeds develop the same basic metabolic pathways during the first hours of imbibition and that these pathways develop in a similar order. Amino acid metabolism begins during the first few minutes of imbibition, followed by the metabolism of Krebs cycle acids and, after two hours, sucrose metabolism. Ten different labelled compounds were identified and labelled groups of compounds described as lipids and sugar phosphates were also present. Detailed conclusions are made about the metabolism based on the tritium labelled compounds formed, together with any other relevant information available. A number of additional experiments, including ¹⁴C tracer experiments, were performed on parts of two of the seeds. These experiments enabled more definite conclusions to be made about the metabolism of sucrose and 4-aminobutyrate, two of the compounds labelled in the tritiated water experiments. Most and in some cases all the labelled compounds formed in the axes and embryos were also found in the storage organs. However, the rate of metabolic development of the storage organs was slower than that of their corresponding axes or embryos, and a comparison of water absorption to metabolism indicated that initially this may have been due to their slower water absorption. The metabolic development was not as uniform among the storage organs as it was among the embryos and axes. In particular, the barley endosperm appeared to have a much simpler metabolism than the castor oil endosperm and it was shown that its metabolism occurred entirely in the aleurone layer of cells on its surface. It is concluded that the metabolic development of seed storage organs depends more on their morphology and function than on their embryological origin.

text: The metabolism of parts of seeds during early germination There have been few studies of the metabolism of germinating seeds during the first minutes and hours of imbibition. This is partly because most biochemical techniques are unsuitable for studying these biological systems. One technique that has been developed for studying such systems involves using tritiated water as a tracer. In this technique the biological material is placed in tritiated water for a known time and then extracted. The extracts are chromatographed on paper and the tritium labelled compounds are detected by scintillation radioautography. The technique has already been successfully applied to the study of intact seeds of two species of dicotyledons. In this present work the technique was used to study the metabolic development during the first six hours of imbibition of the different parts of seeds from four species: a monocotyledon (barley), two dicotyledons (Phaseolus vulgaris and castor oil), and a gymnosperm (Pinus radiata). The seeds of these species are representative of the majority of seeds in the plant world. The results show that performing experiments on excised parts of seeds provides additional information to that obtained from using intact seeds. The most important conclusion of this work is that the axes and embryos of all seeds develop the same basic metabolic pathways during the first hours of imbibition and that these pathways develop in a similar order. Amino acid metabolism begins during the first few minutes of imbibition, followed by the metabolism of Krebs cycle acids and, after two hours, sucrose metabolism. Ten different labelled compounds were identified and labelled groups of compounds described as lipids and sugar phosphates were also present. Detailed conclusions are made about the metabolism based on the tritium labelled compounds formed, together with any other relevant information available. A number of additional experiments, including ¹⁴C tracer experiments, were performed on parts of two of the seeds. These experiments enabled more definite conclusions to be made about the metabolism of sucrose and 4-aminobutyrate, two of the compounds labelled in the tritiated water experiments. Most and in some cases all the labelled compounds formed in the axes and embryos were also found in the storage organs. However, the rate of metabolic development of the storage organs was slower than that of their corresponding axes or embryos, and a comparison of water absorption to metabolism indicated that initially this may have been due to their slower water absorption. The metabolic development was not as uniform among the storage organs as it was among the embryos and axes. In particular, the barley endosperm appeared to have a much simpler metabolism than the castor oil endosperm and it was shown that its metabolism occurred entirely in the aleurone layer of cells on its surface. It is concluded that the metabolic development of seed storage organs depends more on their morphology and function than on their embryological origin.

year: 1973

title: Tūtereinga o Pirirākau: He piringa rākau,  he piringa whakairo, he piringa whare, he piringa mana Māori motuhake Reclaiming identity and mana Māori motuhake

authors: Rolleston, Elisha

subjects: Ngāti Ranginui

abstract: Since the early 19th century, colonisation has deeply harmed Pirirākau, a hapū of Ngāti Ranginui in Tauranga moana, severely and consistently undermining our vitality, livelihood, ambitions, and aspirations. Colonisation through the lens of land alienation, economic impoverishment, mass settler immigration, warfare, cultural marginalisation and assimilation, and multi-level hegemonic racism has had profound negative impacts on the identity, connectedness, sense of belonging, and mana Māori motuhake for Pirirākau.

As a counter-colonial strategy, this thesis explores the role that the Tūtereinga whare whakairo has contributed towards the reclamation of the identity and mana Māori motuhake for Pirirākau. Tūtereinga whare whakairo, a mnemonic architectural vessel fashioned with anthropomorphic figures, is pivotal in the reclamation of the identity and mana Māori motuhake for Pirirākau. Our wharenui is the focal point of our marae – Tūtereinga and remains the cornerstone of the identity of Pirirākau. The historic moments manifested in its carved patterns and structural elements are inextricably connected with and dependent upon the structure of the world fabricated by mātauranga Māori. However, due to the disastrous effects of colonisation, whakairo rākau and its associated architectural practices that are central to Māori identity and mana Māori motuhake suffered decline in many parts of Aotearoa, leading to the detrimental impacts of Māori identity and mana Māori motuhake.

Our wharenui Tūtereinga is a visual representation of our identity and mana that preserves our whakapapa, history, and inter-generational narratives unique to Pirirākau in the form of whakairo rākau, tukutuku, and kōwhaiwhai, enabling the transmission of knowledge for generations through traditional narratives and customary protocols and practices.

text: Tūtereinga o Pirirākau: He piringa rākau,  he piringa whakairo, he piringa whare, he piringa mana Māori motuhake Reclaiming identity and mana Māori motuhake Since the early 19th century, colonisation has deeply harmed Pirirākau, a hapū of Ngāti Ranginui in Tauranga moana, severely and consistently undermining our vitality, livelihood, ambitions, and aspirations. Colonisation through the lens of land alienation, economic impoverishment, mass settler immigration, warfare, cultural marginalisation and assimilation, and multi-level hegemonic racism has had profound negative impacts on the identity, connectedness, sense of belonging, and mana Māori motuhake for Pirirākau.

As a counter-colonial strategy, this thesis explores the role that the Tūtereinga whare whakairo has contributed towards the reclamation of the identity and mana Māori motuhake for Pirirākau. Tūtereinga whare whakairo, a mnemonic architectural vessel fashioned with anthropomorphic figures, is pivotal in the reclamation of the identity and mana Māori motuhake for Pirirākau. Our wharenui is the focal point of our marae – Tūtereinga and remains the cornerstone of the identity of Pirirākau. The historic moments manifested in its carved patterns and structural elements are inextricably connected with and dependent upon the structure of the world fabricated by mātauranga Māori. However, due to the disastrous effects of colonisation, whakairo rākau and its associated architectural practices that are central to Māori identity and mana Māori motuhake suffered decline in many parts of Aotearoa, leading to the detrimental impacts of Māori identity and mana Māori motuhake.

Our wharenui Tūtereinga is a visual representation of our identity and mana that preserves our whakapapa, history, and inter-generational narratives unique to Pirirākau in the form of whakairo rākau, tukutuku, and kōwhaiwhai, enabling the transmission of knowledge for generations through traditional narratives and customary protocols and practices.

year: 2024