title: TELA: Laptops for teachers evaluation—Final report years 7 & 8

authors: Cowie, Bronwen

subjects: laptops for teachers evaluation

abstract: In this evaluation, two methods of data collection were used: first, two focus groups of teachers in face-to-face meetings and second, a questionnaire sent to teachers in a range of schools. The focus groups allowed teachers to talk about their experiences and changes in their use of the laptop over the three years. Each year, one focus group was held for Year 7 and 8 teachers in full primary schools and the other held for Year 7 and 8 teachers in intermediate schools. The annual questionnaire asked teachers about various aspects of their laptops’ experience, including school support for laptops, professional development, their use of laptops at home and in school, and their goals for future use. In this final report, questionnaire results are presented together with the results from focus groups held over three years.

text: TELA: Laptops for teachers evaluation—Final report years 7 & 8 In this evaluation, two methods of data collection were used: first, two focus groups of teachers in face-to-face meetings and second, a questionnaire sent to teachers in a range of schools. The focus groups allowed teachers to talk about their experiences and changes in their use of the laptop over the three years. Each year, one focus group was held for Year 7 and 8 teachers in full primary schools and the other held for Year 7 and 8 teachers in intermediate schools. The annual questionnaire asked teachers about various aspects of their laptops’ experience, including school support for laptops, professional development, their use of laptops at home and in school, and their goals for future use. In this final report, questionnaire results are presented together with the results from focus groups held over three years.

year: 2008-06

title: Quantitative characterization of the multiscale mechanical properties of low-permeability sandstone roofs of coal seams based on nanoindentation and triaxial tests and its implications for CO2 geological sequestration

authors: Cao, F

abstract: Microstructural heterogeneity of low-permeability sandstone roofs of deep unmineable coal seams due to diagenesis significantly affects rock mechanical behavior, greatly impacting the sealing potential of in situ CO2 sequestration and the structural stability of the geological formation. However, little is known about how the microstructure of different mineral groups influences the multiscale mechanical behavior of deep sandstone. This study proposes a new method for quantitatively characterizing the multiscale mechanical properties of low-permeability sandstone and shows the mechanisms responsible for mechanical failure at the micro-, meso-, and macroscale. Triaxial compression tests and targeted nanoindentation tests were conducted to assess the micro- and macroscale mechanical properties of different types of sandstone. The micro- and macroscale experiments were coupled with numerical simulations of compression using a unified cohesive model based on Voronoi polygons to clarify the multiscale mechanical behavior. The results indicate that quartz, the primary mineral component of the sandstones examined, exhibits the strongest micromechanical properties, followed by feldspar, calcite, and clay minerals. Compared to polycrystalline quartz, monocrystalline quartz has a more stable microstructure and is mechanically stronger. The macro-mechanical properties of tight sandstone samples are weakened by increased microstructural inhomogeneity and larger grain size. This leads to a higher likelihood of splitting damage, characterized by a high degree of discrete and weak stress sensitivity. The major conclusion is that the positive rhythm lithofacies of medium-grained sandstone to siltstone are the most favorable for efficient CO2 sequestration in deep unmineable coal seams.

text: Quantitative characterization of the multiscale mechanical properties of low-permeability sandstone roofs of coal seams based on nanoindentation and triaxial tests and its implications for CO2 geological sequestration Microstructural heterogeneity of low-permeability sandstone roofs of deep unmineable coal seams due to diagenesis significantly affects rock mechanical behavior, greatly impacting the sealing potential of in situ CO2 sequestration and the structural stability of the geological formation. However, little is known about how the microstructure of different mineral groups influences the multiscale mechanical behavior of deep sandstone. This study proposes a new method for quantitatively characterizing the multiscale mechanical properties of low-permeability sandstone and shows the mechanisms responsible for mechanical failure at the micro-, meso-, and macroscale. Triaxial compression tests and targeted nanoindentation tests were conducted to assess the micro- and macroscale mechanical properties of different types of sandstone. The micro- and macroscale experiments were coupled with numerical simulations of compression using a unified cohesive model based on Voronoi polygons to clarify the multiscale mechanical behavior. The results indicate that quartz, the primary mineral component of the sandstones examined, exhibits the strongest micromechanical properties, followed by feldspar, calcite, and clay minerals. Compared to polycrystalline quartz, monocrystalline quartz has a more stable microstructure and is mechanically stronger. The macro-mechanical properties of tight sandstone samples are weakened by increased microstructural inhomogeneity and larger grain size. This leads to a higher likelihood of splitting damage, characterized by a high degree of discrete and weak stress sensitivity. The major conclusion is that the positive rhythm lithofacies of medium-grained sandstone to siltstone are the most favorable for efficient CO2 sequestration in deep unmineable coal seams.

year: 2025

title: Te Whare o Te Kahikatoa: He Kura nui, he Kura roa, he Kura Parawhakawai

authors: Rangihau, Ngatai

subjects: Kahikatoa

abstract: “Te Whare o te Kahikatoa,
Te Iho o te Maire,
Te Pōkaitāniwhaniwha o te Kohu”
(TKPOT, 2010-2016).¹

Ka hoki nei kia Te Maunga rāua ko Hinepukohurangi, ki te taetanga mai hoki o Mataatua waka², ko ngā kura o tawhito, kura wānanga, kura parawhakawai o te iwi o Tūhoe ngā tino whare whakapakari pōkaitāniwhaniwha mō roto i te whare o te kahikatoa. Īnā te rahi o ngā toataumatarau i puta ngā ihu, ka tū rātau hai toa rangatira ārahi i te iwi. Ki te kore ēneki kura o te nehenehe kāre he oranga, kāre e eke te iwi ngā whakairinga tūmanako e wawatatia ana e rātau.
 
Waihoki, ko te kaupapa e rangahau ana i tēnei tuhinga he whakapono, he whakapae, kai konei tonu tēnei hua o te wānanga. He kura hai whakapakari rangatira mō āpōpō. Ahakoa tēnei ao hurihuri koinei tonu tētahi huarahi nā te Māori, nā Tūhoe hai whakaohooho mā ngā uri whakaheke, e mau pū ai a Ngāi Tūhoe ki ōna kura tapu o nehe.

text: Te Whare o Te Kahikatoa: He Kura nui, he Kura roa, he Kura Parawhakawai “Te Whare o te Kahikatoa,
Te Iho o te Maire,
Te Pōkaitāniwhaniwha o te Kohu”
(TKPOT, 2010-2016).¹

Ka hoki nei kia Te Maunga rāua ko Hinepukohurangi, ki te taetanga mai hoki o Mataatua waka², ko ngā kura o tawhito, kura wānanga, kura parawhakawai o te iwi o Tūhoe ngā tino whare whakapakari pōkaitāniwhaniwha mō roto i te whare o te kahikatoa. Īnā te rahi o ngā toataumatarau i puta ngā ihu, ka tū rātau hai toa rangatira ārahi i te iwi. Ki te kore ēneki kura o te nehenehe kāre he oranga, kāre e eke te iwi ngā whakairinga tūmanako e wawatatia ana e rātau.
 
Waihoki, ko te kaupapa e rangahau ana i tēnei tuhinga he whakapono, he whakapae, kai konei tonu tēnei hua o te wānanga. He kura hai whakapakari rangatira mō āpōpō. Ahakoa tēnei ao hurihuri koinei tonu tētahi huarahi nā te Māori, nā Tūhoe hai whakaohooho mā ngā uri whakaheke, e mau pū ai a Ngāi Tūhoe ki ōna kura tapu o nehe.

year: 2017