title: Development of a Supercapacitor based Surge Resistant Uninterruptible Power Supply

authors: Kozhiparambil, Parthasaradhy Kumaran

abstract: Uninterruptible Power Supplies (UPSs) provide short-term power back-up to sensitive electronic and electrical equipments, where an unexpected power loss could lead to undesirable outcomes. They usually bridge the connected equipment between the utility mains power and other long term back-up power systems like generators. A UPS also provides a “clean” source of power, meaning they filter the connected equipment from distortions in electrical parameters of the mains power like noise, harmonics, surges, sags and spikes. A surge resistant UPS or SRUPS is one that has the capability to withstand surges, which are momentary or sustained increases in the mains voltage, and react quickly enough to offer protection to the connected equipment from the same. Usually UPSs run off battery power when the utility mains power is absent. But the SRUPS developed in this design project uses super capacitors instead of battery packs. The reason for this is that the high energy-densities and medium power-densities offered by super capacitors allow for it to serve two purposes. One is to provide the DC power to operate the UPS in the absence of mains power, as an alternative to batteries. Secondly, super capacitors can withstand heavy momentary high current/voltage surges due to its high energy-density characteristics. Also as the life-time of super capacitors is much higher than that of conventional batteries and as they do not need regular topping-up or inspection, the end result is a truly maintenance-free UPS. Most commercial UPSs do not have inherent surge protection capabilities. The UPS is one entity while a discrete surge protection module is inserted between the utility mains and the UPS to provide for transient surge suppression. In the proposed SRUPS, the super capacitor, because of their inherent capability to absorb transient surges, forms a protective front end to the actual UPS rather than needing to have the involvement of discrete protection devices.

text: Development of a Supercapacitor based Surge Resistant Uninterruptible Power Supply Uninterruptible Power Supplies (UPSs) provide short-term power back-up to sensitive electronic and electrical equipments, where an unexpected power loss could lead to undesirable outcomes. They usually bridge the connected equipment between the utility mains power and other long term back-up power systems like generators. A UPS also provides a “clean” source of power, meaning they filter the connected equipment from distortions in electrical parameters of the mains power like noise, harmonics, surges, sags and spikes. A surge resistant UPS or SRUPS is one that has the capability to withstand surges, which are momentary or sustained increases in the mains voltage, and react quickly enough to offer protection to the connected equipment from the same. Usually UPSs run off battery power when the utility mains power is absent. But the SRUPS developed in this design project uses super capacitors instead of battery packs. The reason for this is that the high energy-densities and medium power-densities offered by super capacitors allow for it to serve two purposes. One is to provide the DC power to operate the UPS in the absence of mains power, as an alternative to batteries. Secondly, super capacitors can withstand heavy momentary high current/voltage surges due to its high energy-density characteristics. Also as the life-time of super capacitors is much higher than that of conventional batteries and as they do not need regular topping-up or inspection, the end result is a truly maintenance-free UPS. Most commercial UPSs do not have inherent surge protection capabilities. The UPS is one entity while a discrete surge protection module is inserted between the utility mains and the UPS to provide for transient surge suppression. In the proposed SRUPS, the super capacitor, because of their inherent capability to absorb transient surges, forms a protective front end to the actual UPS rather than needing to have the involvement of discrete protection devices.

year: 2011

title: The New Zealand Exploration Company and Aroha Gold Mines Ltd: the last introduction of overseas capital to Waiorongomai

authors: Hart, Philip

abstract: The Paris and London Rothschilds became involved in mining investments in the late nineteenth century, in 1886 forming the Exploration Company, which subsequently formed subsidiary companies to develop promising fields. Two men were fundamental to the formation of the New Zealand Exploration Company and Aroha Gold Mines: James de Hirsch and Jules George Wilson, and full details of their lives, in particular in New Zealand, are provided. In 1895, as the mining boom started, de Hirsch, encouraged by Wilson, wanted to develop the Thames low levels but soon abandoned this idea and became interested in Waiorongomai. After an Australian expert, Edward John Dunn, produced an optimistic report, a syndicate was formed that negotiated with the vendors.
Full details are provided of the founders, directors, and shareholders (almost all living outside New Zealand) in both companies and of the New Zealand mining properties they acquired. At Waiorongomai, existing mines were further tested and opened up between 1895 and 1898, but because the anticipated high value ore was not found and also because of the costs, a new low level drive through the entire field was commenced. The battery was also reconstructed and an experimental cyanide plant added.
Because of discouraging results along with the deaths of both Wilson and de Hirsch, the companies abandoned the Waiorongomai field. As so often, government policies and taxes were blamed for this outcome, although wiser commentators noted that the companies were not set up to benefit New Zealand rather than their shareholders. The departure of the companies and their capital set the field back significantly.

text: The New Zealand Exploration Company and Aroha Gold Mines Ltd: the last introduction of overseas capital to Waiorongomai The Paris and London Rothschilds became involved in mining investments in the late nineteenth century, in 1886 forming the Exploration Company, which subsequently formed subsidiary companies to develop promising fields. Two men were fundamental to the formation of the New Zealand Exploration Company and Aroha Gold Mines: James de Hirsch and Jules George Wilson, and full details of their lives, in particular in New Zealand, are provided. In 1895, as the mining boom started, de Hirsch, encouraged by Wilson, wanted to develop the Thames low levels but soon abandoned this idea and became interested in Waiorongomai. After an Australian expert, Edward John Dunn, produced an optimistic report, a syndicate was formed that negotiated with the vendors.
Full details are provided of the founders, directors, and shareholders (almost all living outside New Zealand) in both companies and of the New Zealand mining properties they acquired. At Waiorongomai, existing mines were further tested and opened up between 1895 and 1898, but because the anticipated high value ore was not found and also because of the costs, a new low level drive through the entire field was commenced. The battery was also reconstructed and an experimental cyanide plant added.
Because of discouraging results along with the deaths of both Wilson and de Hirsch, the companies abandoned the Waiorongomai field. As so often, government policies and taxes were blamed for this outcome, although wiser commentators noted that the companies were not set up to benefit New Zealand rather than their shareholders. The departure of the companies and their capital set the field back significantly.

year: 2016

title: The confiscation of Pare Hauraki: The impact of Te Ao Pākehā on the Iwi of Pare Hauraki Māori; on the whenua of Pare Hauraki 1835-1997 and The Foreshore and Seabed Act 2004

authors: Peters, Murray Hamaka

subjects: Maori

abstract: Kia mau ki te rangatiratanga 
o te Iwi o Hauraki  

Just as the whakataukī  explains  Hold fast to the power and authority of the Hauraki tribes  the focus of this study is to examine and evaluate the impact of Te Ao Pākehā on Pare Hauraki lands and Tīkapa Moana under the mana of Pare Hauraki Māori  and Pare Hauraki tikanga.  The iwi of Pare Hauraki have land claims through the, (Wai 100) and the Hauraki Māori Trust Board, before the Waitangi Tribunal highlighting whenua issues and their impact on Pare Hauraki iwi.  

Also relevant is the foreshore and seabed issue which is documented leading on to the infamous Foreshore and Seabed Act 2004, (for Māori anyway), sparking widespread opposition by Māori throughout the country, and other supportive non-Māori groups because of  the issue concerning Māori kaitiiakitanga and guardianship roles.

This investigation will commence by outlining the histories of discovery and settlement of Pare Hauraki, the concept of mana-whenua/mana-moana  as it applies to Pare Hauraki Māori and our tikanga, and then to subsequent issues leading to land alienation of the early 19th to late 20th cenutries and then to the foreshore issue of the early 21st Century.   
 
This research will include information showing that before 1840 to Te Tiriti o Waitangi and thereafter that Pākehā and various Crown agents, through legislation claimed the rights to the lands, waterways and oceanic areas under the kaitiakitanga of my tupuna of Pare Hauraki.  Tupuna and other iwi members have expressed their disgust seeing the mana of their traditional lands, waterways, oceanic areas and kaitiaki roles slipping away from them through these activities. 

Therefore, this thesis is a response to those issues and the impact on (a), Māori as a people, and our tikanga Māori and (b), Pare Hauraki Māori as the kaitiaki/guardians of the Pare Hauraki rohe/territory in accordance with tikanga Māori, and the significance of the responsibilities which arise out of the Māori concepts of kaitiakitanga, manaakitanga and rangatiratanga.

text: The confiscation of Pare Hauraki: The impact of Te Ao Pākehā on the Iwi of Pare Hauraki Māori; on the whenua of Pare Hauraki 1835-1997 and The Foreshore and Seabed Act 2004 Kia mau ki te rangatiratanga 
o te Iwi o Hauraki  

Just as the whakataukī  explains  Hold fast to the power and authority of the Hauraki tribes  the focus of this study is to examine and evaluate the impact of Te Ao Pākehā on Pare Hauraki lands and Tīkapa Moana under the mana of Pare Hauraki Māori  and Pare Hauraki tikanga.  The iwi of Pare Hauraki have land claims through the, (Wai 100) and the Hauraki Māori Trust Board, before the Waitangi Tribunal highlighting whenua issues and their impact on Pare Hauraki iwi.  

Also relevant is the foreshore and seabed issue which is documented leading on to the infamous Foreshore and Seabed Act 2004, (for Māori anyway), sparking widespread opposition by Māori throughout the country, and other supportive non-Māori groups because of  the issue concerning Māori kaitiiakitanga and guardianship roles.

This investigation will commence by outlining the histories of discovery and settlement of Pare Hauraki, the concept of mana-whenua/mana-moana  as it applies to Pare Hauraki Māori and our tikanga, and then to subsequent issues leading to land alienation of the early 19th to late 20th cenutries and then to the foreshore issue of the early 21st Century.   
 
This research will include information showing that before 1840 to Te Tiriti o Waitangi and thereafter that Pākehā and various Crown agents, through legislation claimed the rights to the lands, waterways and oceanic areas under the kaitiakitanga of my tupuna of Pare Hauraki.  Tupuna and other iwi members have expressed their disgust seeing the mana of their traditional lands, waterways, oceanic areas and kaitiaki roles slipping away from them through these activities. 

Therefore, this thesis is a response to those issues and the impact on (a), Māori as a people, and our tikanga Māori and (b), Pare Hauraki Māori as the kaitiaki/guardians of the Pare Hauraki rohe/territory in accordance with tikanga Māori, and the significance of the responsibilities which arise out of the Māori concepts of kaitiakitanga, manaakitanga and rangatiratanga.

year: 2007