title: Location-based indexing for mobile context-aware access to a digital library

authors: Hinze, Annika

subjects: computer science

abstract: Mobile information systems need to collaborate with each other to provide seamless information access to the user. Information about the user and their context provides the points of contact between the systems. Location is the most basic user context.
TIP is a mobile tourist information system that provides location-based access to documents in the digital library Greenstone. This paper identifies the challenges for providing effcient access to location-based information using the various access modes a tourist requires on their travels. We discuss our extended 2DR-tree approach to meet these challenges.

text: Location-based indexing for mobile context-aware access to a digital library Mobile information systems need to collaborate with each other to provide seamless information access to the user. Information about the user and their context provides the points of contact between the systems. Location is the most basic user context.
TIP is a mobile tourist information system that provides location-based access to documents in the digital library Greenstone. This paper identifies the challenges for providing effcient access to location-based information using the various access modes a tourist requires on their travels. We discuss our extended 2DR-tree approach to meet these challenges.

year: 2007-08-22

title: Isolation, Characterization and Synthesis of a Phenyl-substituted Pyrrole Isolated from the Flavonoid Fraction of Mānuka Honey

authors: Chan, Ching Wan

subjects: Mānuka Honey

abstract: Compound 1, which occurs in the flavonoid fraction of mānuka honey and showed a statistical correlation with the non-peroxide antibacterial activity of the honeys, was extracted from fifteen kilograms of mānuka honey using Amberlite XAD-2 resin and liquid-liquid extraction, and isolated by a combination of Sephadex-LH20 column chromatography and HPLC. Characterization of 1 was achieved by one and 2D- 1H and 13C NMR spectroscopy and GC-MS and 1 was identified as 2-formyl-5-(2-methoxyphenyl)-pyrrole. In addition to 1, two other non-flavonoids were isolated from the flavonoid fraction and their identities confirmed as caffeic acid and p-coumaric acid. Synthesis of 9 (3-hydroxy-1-(2-methoxyphenyl)-3-(oxazol-4-yl) propan-1-one), an intermediate in the route to 1, gave a yield of 67.5% as a pale yellow crystals after crystallization from CH2Cl2/hexane. Synthesis of 1 from 9 only resulted in barely traceable amount of 1. The dominant product after recrystallization from CH2Cl2/hexane was 10 ((E)-1-(2-methoxyphenyl)-3-(oxazol-4-yl)prop-2-en-1-one) which was the dehydrated analogue of 9. The synthesis of 1 was repeated. The product mixture was fractionated on a silica gel column, followed by two cycles of preparative layer chromatography applied to the fractions which contained 1 and yield 0.36 mg of 1 (0.00179 mmol, 0.2%).

text: Isolation, Characterization and Synthesis of a Phenyl-substituted Pyrrole Isolated from the Flavonoid Fraction of Mānuka Honey Compound 1, which occurs in the flavonoid fraction of mānuka honey and showed a statistical correlation with the non-peroxide antibacterial activity of the honeys, was extracted from fifteen kilograms of mānuka honey using Amberlite XAD-2 resin and liquid-liquid extraction, and isolated by a combination of Sephadex-LH20 column chromatography and HPLC. Characterization of 1 was achieved by one and 2D- 1H and 13C NMR spectroscopy and GC-MS and 1 was identified as 2-formyl-5-(2-methoxyphenyl)-pyrrole. In addition to 1, two other non-flavonoids were isolated from the flavonoid fraction and their identities confirmed as caffeic acid and p-coumaric acid. Synthesis of 9 (3-hydroxy-1-(2-methoxyphenyl)-3-(oxazol-4-yl) propan-1-one), an intermediate in the route to 1, gave a yield of 67.5% as a pale yellow crystals after crystallization from CH2Cl2/hexane. Synthesis of 1 from 9 only resulted in barely traceable amount of 1. The dominant product after recrystallization from CH2Cl2/hexane was 10 ((E)-1-(2-methoxyphenyl)-3-(oxazol-4-yl)prop-2-en-1-one) which was the dehydrated analogue of 9. The synthesis of 1 was repeated. The product mixture was fractionated on a silica gel column, followed by two cycles of preparative layer chromatography applied to the fractions which contained 1 and yield 0.36 mg of 1 (0.00179 mmol, 0.2%).

year: 2011

title: On the stage Māori medium ITE: Listening to students’ voices

authors: Lee-Morgan, Jenny Bol Jun

subjects: Māori medium education

abstract: Māori-medium initial teacher education (ITE) is a small but highly important group ‘on stage’ in te ao Māori and New Zealand education. While education plays a major role in Māori language revitalisation, Māori language is also pivotal to Māori education if the aspiration ‘to live as Māori’ (Durie, 2001) is to be fulfilled. Māori-medium teachers are critical to the success of learners and their whānau who select a Māori-medium pathway and who can make a meaningful difference to the educational outcomes of Māori (Hōhepa, Hāwea, Tamatea, & Heaton, 2014). This article draws on the students’ voices in a two-year research project that centered on the development of a teaching and learning initiative within one Māori-medium ITE programme. Building on previous work by Hōhepa et al. (2014), this study adds another layer of students’ voices to understand more clearly language related issues and student experiences in Māori-medium ITE programmes. The article presents some of the complexities associated with Māori language regeneration facing students of Māori-medium ITE, with the understanding that whatever appears on the stage is always part of a greater narrative behind the scenes.

text: On the stage Māori medium ITE: Listening to students’ voices Māori-medium initial teacher education (ITE) is a small but highly important group ‘on stage’ in te ao Māori and New Zealand education. While education plays a major role in Māori language revitalisation, Māori language is also pivotal to Māori education if the aspiration ‘to live as Māori’ (Durie, 2001) is to be fulfilled. Māori-medium teachers are critical to the success of learners and their whānau who select a Māori-medium pathway and who can make a meaningful difference to the educational outcomes of Māori (Hōhepa, Hāwea, Tamatea, & Heaton, 2014). This article draws on the students’ voices in a two-year research project that centered on the development of a teaching and learning initiative within one Māori-medium ITE programme. Building on previous work by Hōhepa et al. (2014), this study adds another layer of students’ voices to understand more clearly language related issues and student experiences in Māori-medium ITE programmes. The article presents some of the complexities associated with Māori language regeneration facing students of Māori-medium ITE, with the understanding that whatever appears on the stage is always part of a greater narrative behind the scenes.

year: 2017