title: Passionate and proactive: the role of the secondary principal in leading curriculum change.

authors: Morrison, Michele

subjects: principal leadership

abstract: It is widely recognised that the leadership of school principals is a crucial factor in school-based curriculum change. With the recent introduction of a new national curriculum in New Zealand, schools will need to develop strategies to incorporate this new curriculum into their programmes. This paper outlines evidence from international literature about how the leadership of principals is linked to change. It also examines evidence from case studies of early adopter schools. A major finding is that there appear to be common factors at work across effective secondary school principals, in particular an enthusiasm for proactive leadership of changes in school culture involving fundamental shifts in thinking and behaviour.

text: Passionate and proactive: the role of the secondary principal in leading curriculum change. It is widely recognised that the leadership of school principals is a crucial factor in school-based curriculum change. With the recent introduction of a new national curriculum in New Zealand, schools will need to develop strategies to incorporate this new curriculum into their programmes. This paper outlines evidence from international literature about how the leadership of principals is linked to change. It also examines evidence from case studies of early adopter schools. A major finding is that there appear to be common factors at work across effective secondary school principals, in particular an enthusiasm for proactive leadership of changes in school culture involving fundamental shifts in thinking and behaviour.

year: 2008

title: An extremely thermostable xylanase from the thermophilic eubacterium Thermotoga.

authors: Simpson, H.D.

subjects: biology

abstract: Endo-1,4-beta-xylanase (EC 3.2.1.8) was isolated from the culture supernatant of Thermotoga sp. strain FjSS3-B.1, an extremely thermophilic anaerobic eubacterium which grows optimally at 80 degrees C. Activity was purified 165-fold by anion-exchange and hydroxyapatite chromatography. The enzyme has an Mr of 31,000 as determined by SDS/PAGE and 35,000 by analytical gel filtration. The optima for activity and stability for purified xylanase were between pH 5.0 and 5.5. At pH 5.5, which is the optimum pH for thermostability, t1/2 (95 degrees C) is 90 min. The thermostability was improved by immobilization of the xylanase on to porous glass beads; t1/2 (105 degrees C) is 10 min. Several additives, such as sorbitol and xylan, were also found to increase the thermostability. At 130 degrees C, the half-life of immobilized xylanase in the presence of 90% sorbitol was 1.3 min. At 130 degrees C in molten sorbitol half of the enzyme denatured rapidly, but the remainder appeared to have a half-life of about 60 min.

text: An extremely thermostable xylanase from the thermophilic eubacterium Thermotoga. Endo-1,4-beta-xylanase (EC 3.2.1.8) was isolated from the culture supernatant of Thermotoga sp. strain FjSS3-B.1, an extremely thermophilic anaerobic eubacterium which grows optimally at 80 degrees C. Activity was purified 165-fold by anion-exchange and hydroxyapatite chromatography. The enzyme has an Mr of 31,000 as determined by SDS/PAGE and 35,000 by analytical gel filtration. The optima for activity and stability for purified xylanase were between pH 5.0 and 5.5. At pH 5.5, which is the optimum pH for thermostability, t1/2 (95 degrees C) is 90 min. The thermostability was improved by immobilization of the xylanase on to porous glass beads; t1/2 (105 degrees C) is 10 min. Several additives, such as sorbitol and xylan, were also found to increase the thermostability. At 130 degrees C, the half-life of immobilized xylanase in the presence of 90% sorbitol was 1.3 min. At 130 degrees C in molten sorbitol half of the enzyme denatured rapidly, but the remainder appeared to have a half-life of about 60 min.

year: 1991

title: Māori loanwords: a corpus of New Zealand English tweets

authors: Trye, David

abstract: Māori loanwords are widely used in New Zealand English for various social functions by New Zealanders within and outside of the Māori community. Motivated by the lack of linguistic resources for studying how Māori loanwords are used in social media, we present a new corpus of New Zealand English tweets. We collected tweets containing selected Māori words that are likely to be known by New Zealanders who do not speak Māori. Since over 30% of these words turned out to be irrelevant (e.g., mana is a popular gaming term, Moana is a character from a Disney movie), we manually annotated a sample of our tweets into relevant and irrelevant categories. This data was used to train machine learning models to automatically filter out irrelevant tweets.

text: Māori loanwords: a corpus of New Zealand English tweets Māori loanwords are widely used in New Zealand English for various social functions by New Zealanders within and outside of the Māori community. Motivated by the lack of linguistic resources for studying how Māori loanwords are used in social media, we present a new corpus of New Zealand English tweets. We collected tweets containing selected Māori words that are likely to be known by New Zealanders who do not speak Māori. Since over 30% of these words turned out to be irrelevant (e.g., mana is a popular gaming term, Moana is a character from a Disney movie), we manually annotated a sample of our tweets into relevant and irrelevant categories. This data was used to train machine learning models to automatically filter out irrelevant tweets.

year: 2019