title: Mathematical investigations: A primary teacher educator's narrative journey of professional awareness

authors: Bailey, Judy

subjects: education

abstract: As a teacher educator, I used narrative inquiry to investigate my professional practice in working alongside pre-service primary teachers in mathematics education. One theme that emerged from this research was the exploration of narrative as a powerful means with which to pursue professional development. In this process I encountered, and subsequently changed, previously unknown personal beliefs about learning mathematics. A second theme focused on the value of mathematical investigations, for myself as a mathematical learner and for supporting pre-service teachers to develop their understandings of what it means to learn and teach mathematics.

text: Mathematical investigations: A primary teacher educator's narrative journey of professional awareness As a teacher educator, I used narrative inquiry to investigate my professional practice in working alongside pre-service primary teachers in mathematics education. One theme that emerged from this research was the exploration of narrative as a powerful means with which to pursue professional development. In this process I encountered, and subsequently changed, previously unknown personal beliefs about learning mathematics. A second theme focused on the value of mathematical investigations, for myself as a mathematical learner and for supporting pre-service teachers to develop their understandings of what it means to learn and teach mathematics.

year: 2007

title: Characterizing porous microaggregates and soil organic matter sequestered in allophanic paleosols on Holocene tephras using synchrotron-based X-ray microscopy and spectroscopy

authors: Huang, Doreen Yu-Tuan

subjects: Science & Technology

abstract: Allophanic tephra-derived soils can sequester sizable quantities of soil organic matter (SOM). However, no studies have visualized the fine internal porous structure of allophanic soil microaggregates, nor studied the carbon structure preserved in such soils or paleosols. We used synchrotron radiation-based transmission X-ray microscopy (TXM) to perform 3D-tomography of the internal porous structure of dominantly allophanic soil microaggregates, and carbon near-edge X-ray absorption fine-structure (C NEXAFS) spectroscopy to characterize SOM in ≤ 12,000-year-old tephra-derived allophane-rich (with minor ferrihydrite) paleosols. The TXM tomography showed a vast network of internal, tortuous nano-pores within an allophanic microaggregate comprising nanoaggregates. SOM in the allophanic paleosols at four sites was dominated by carboxylic/carbonyl functional groups with subordinate quinonic, aromatic, and aliphatic groups. All samples exhibited similar compositions despite differences between the sites. That the SOM does not comprise specific types of functional groups through time implies that the functional groups are relict. The SOM originated at the land/soil surface: ongoing tephra deposition (intermittently or abruptly) then caused the land-surface to rise so that the once-surface horizons were buried more deeply and hence became increasingly isolated from inputs by the surficial/modern organic cycle. The presence of quinonic carbon, from biological processes but vulnerable to oxygen and light, indicates the exceptional protection of SOM and bio-signals in allophanic paleosols, attributable both to the porous allophane (with ferrihydrite) aggregates that occlude the relict SOM from degradation, and to rapid burial by successive tephra-fallout, as well as strong Al-organic chemical bonding. TXM and C NEXAFS spectroscopy help to unravel the fine structure of soils and SOM and are of great potential for soil science studies.

text: Characterizing porous microaggregates and soil organic matter sequestered in allophanic paleosols on Holocene tephras using synchrotron-based X-ray microscopy and spectroscopy Allophanic tephra-derived soils can sequester sizable quantities of soil organic matter (SOM). However, no studies have visualized the fine internal porous structure of allophanic soil microaggregates, nor studied the carbon structure preserved in such soils or paleosols. We used synchrotron radiation-based transmission X-ray microscopy (TXM) to perform 3D-tomography of the internal porous structure of dominantly allophanic soil microaggregates, and carbon near-edge X-ray absorption fine-structure (C NEXAFS) spectroscopy to characterize SOM in ≤ 12,000-year-old tephra-derived allophane-rich (with minor ferrihydrite) paleosols. The TXM tomography showed a vast network of internal, tortuous nano-pores within an allophanic microaggregate comprising nanoaggregates. SOM in the allophanic paleosols at four sites was dominated by carboxylic/carbonyl functional groups with subordinate quinonic, aromatic, and aliphatic groups. All samples exhibited similar compositions despite differences between the sites. That the SOM does not comprise specific types of functional groups through time implies that the functional groups are relict. The SOM originated at the land/soil surface: ongoing tephra deposition (intermittently or abruptly) then caused the land-surface to rise so that the once-surface horizons were buried more deeply and hence became increasingly isolated from inputs by the surficial/modern organic cycle. The presence of quinonic carbon, from biological processes but vulnerable to oxygen and light, indicates the exceptional protection of SOM and bio-signals in allophanic paleosols, attributable both to the porous allophane (with ferrihydrite) aggregates that occlude the relict SOM from degradation, and to rapid burial by successive tephra-fallout, as well as strong Al-organic chemical bonding. TXM and C NEXAFS spectroscopy help to unravel the fine structure of soils and SOM and are of great potential for soil science studies.

year: 2021

title: He whakaemi kōrero mō Ngā Ruahine

authors: Manuirirangi, Hōri

abstract: Ko te whāinga o tēnei tuhingaroa, hei whakaemi kōrero mō Ngā Ruahine. I whāia e au te āhua o te tipu o te rākau hei hanga i aku kōhinga kōrero mō Ngā Ruahine. Ko te ūpoko tuatahi, ko ngā pakiaka, arā te tīmatatanga o Ngā Ruahine. I konei ka tirohia ngā kōrero mō ngā waka tawhito mete whakapapa hoki o ngā tūpuna tāngatawhenua o Ngā Ruahine. Whai muri i tēnā, he wāhanga e pā ana ki te haeretanga mai o Aotea waka, ā, ka tirohia hoki tētehi kōrero tawhito mō te wehenga o ngā iwi o Aotea.
Mai i ngā pakiaka ka piki ake ki te tinana o te rākau. Koinei te wāhanga e pā ana ki ngā korero whenua o Ngā Ruahine. Kei te ūpoko tuarua nei, ka āta tirohia ngā kōrero mō ngā tongi o te rohe o Ngā Ruahine, me ngā take kōrero e whakawhanaunga ana i te tangata ki te whenua. Kei te ūpoko tuarua anō hoki ētehi whakaaturanga whenua mō te rohe o Ngā Ruahine, hei āwhina i te kaipānui.  
Mai i te tinana, ka aro atu ki ngā peka o te rākau i raro i te ūpoko tuatoru. Koinei te wāhanga nui o tēnei tuhingaroa, nā te tokomaha o ngā toronga o ngā peka nei. I roto i te ūpoko tuatoru, ka tirohia ētehi kōrero mō ia hapū o Ngā Ruahine. Mai i ngā kōrero mō ngā rohe whenua o ia hapū, ki ngā kōrero mō ngā marae me ngā pā tawhito o ērā hapū, ā, tae atu hoki ki ngā tūpuna rongonui me ā rātou mahi whakaari.  
Hei te mutunga, ka herea katoatia ngā kōrero o te tuhinga nei i raro i te ūpoko tuawhā, kia kite ai , he aha ngā hua e pūawai ai i tēnei tuhinga. Koinei te whakamutunga o ngā kōrero, arā ko te whakakapīnga o ngā kōrero.  
Ko tēnei tuhingaroa, he whakaemi kōrero mai i ngā kaumātua o Ngā Ruahine, ā, he mea tango mai hoki ētehi kōrero i ngā pukapuka, ko ēnei kōrero kua whakatakotoria i roto i tēnei tuhingaroa hei whakawhāriki iho ki te aroaro o te tini. Ko te tūmanako, he tuhinga rangahau tēnei hei āwhina i ngā rangatahi o Ngā Ruahine, kia rongo ai rātou i ngā kōrero kāore i te tino rangona i ēnei rā, kia mau hoki ngā kōrero a ngā kaumātua o Ngā Ruahine, kei ngaro. Erangi, he whakamōhio tēnei, he tīmatanga anahe tēnei tuhingaroa mō te kaupapa nei. Ko te tūmanako, he hua anō ka puta i tēnei rangahau, hei whāngai i ngā manu hiakai o Ngā Ruahine.

text: He whakaemi kōrero mō Ngā Ruahine Ko te whāinga o tēnei tuhingaroa, hei whakaemi kōrero mō Ngā Ruahine. I whāia e au te āhua o te tipu o te rākau hei hanga i aku kōhinga kōrero mō Ngā Ruahine. Ko te ūpoko tuatahi, ko ngā pakiaka, arā te tīmatatanga o Ngā Ruahine. I konei ka tirohia ngā kōrero mō ngā waka tawhito mete whakapapa hoki o ngā tūpuna tāngatawhenua o Ngā Ruahine. Whai muri i tēnā, he wāhanga e pā ana ki te haeretanga mai o Aotea waka, ā, ka tirohia hoki tētehi kōrero tawhito mō te wehenga o ngā iwi o Aotea.
Mai i ngā pakiaka ka piki ake ki te tinana o te rākau. Koinei te wāhanga e pā ana ki ngā korero whenua o Ngā Ruahine. Kei te ūpoko tuarua nei, ka āta tirohia ngā kōrero mō ngā tongi o te rohe o Ngā Ruahine, me ngā take kōrero e whakawhanaunga ana i te tangata ki te whenua. Kei te ūpoko tuarua anō hoki ētehi whakaaturanga whenua mō te rohe o Ngā Ruahine, hei āwhina i te kaipānui.  
Mai i te tinana, ka aro atu ki ngā peka o te rākau i raro i te ūpoko tuatoru. Koinei te wāhanga nui o tēnei tuhingaroa, nā te tokomaha o ngā toronga o ngā peka nei. I roto i te ūpoko tuatoru, ka tirohia ētehi kōrero mō ia hapū o Ngā Ruahine. Mai i ngā kōrero mō ngā rohe whenua o ia hapū, ki ngā kōrero mō ngā marae me ngā pā tawhito o ērā hapū, ā, tae atu hoki ki ngā tūpuna rongonui me ā rātou mahi whakaari.  
Hei te mutunga, ka herea katoatia ngā kōrero o te tuhinga nei i raro i te ūpoko tuawhā, kia kite ai , he aha ngā hua e pūawai ai i tēnei tuhinga. Koinei te whakamutunga o ngā kōrero, arā ko te whakakapīnga o ngā kōrero.  
Ko tēnei tuhingaroa, he whakaemi kōrero mai i ngā kaumātua o Ngā Ruahine, ā, he mea tango mai hoki ētehi kōrero i ngā pukapuka, ko ēnei kōrero kua whakatakotoria i roto i tēnei tuhingaroa hei whakawhāriki iho ki te aroaro o te tini. Ko te tūmanako, he tuhinga rangahau tēnei hei āwhina i ngā rangatahi o Ngā Ruahine, kia rongo ai rātou i ngā kōrero kāore i te tino rangona i ēnei rā, kia mau hoki ngā kōrero a ngā kaumātua o Ngā Ruahine, kei ngaro. Erangi, he whakamōhio tēnei, he tīmatanga anahe tēnei tuhingaroa mō te kaupapa nei. Ko te tūmanako, he hua anō ka puta i tēnei rangahau, hei whāngai i ngā manu hiakai o Ngā Ruahine.

year: 1998