title: Editorial interview [Video Journal of Education and Pedagogy]

authors: Peters, Michael A.

abstract: Editorial interview of Video Journal of Education and Pedagogy (2016) 1:2

text: Editorial interview [Video Journal of Education and Pedagogy] Editorial interview of Video Journal of Education and Pedagogy (2016) 1:2

year: 2016

title: Analysing chromatographic data using data mining to monitor petroleum content in water

authors: Holmes, Geoffrey

subjects: computer science

abstract: Chromatography is an important analytical technique that has widespread use in environmental applications. A typical application is the monitoring of water samples to determine if they contain petroleum. These tests are mandated in many countries to enable environmental agencies to determine if tanks used to store petrol are leaking into local water systems.
Chromatographic techniques, typically using gas or liquid chromatography coupled with mass spectrometry, allow an analyst to detect a vast array of compounds—potentially in the order of thousands. Accurate analysis relies heavily on the skills of a limited pool of experienced analysts utilising semi-automatic techniques to analyse these datasets—making the outcomes subjective.
The focus of current laboratory data analysis systems has been on refinements of existing approaches. The work described here represents a paradigm shift achieved through applying data mining techniques to tackle the problem. These techniques are compelling because the efficacy of preprocessing methods, which are essential in this application area, can be objectively evaluated. This paper presents preliminary results using a data mining framework to predict the concentrations of petroleum compounds in water samples. Experiments demonstrate that the framework can be used to produce models of sufficient accuracy—measured in terms of root mean squared error and correlation coefficients—to offer the potential for significantly reducing the time spent by analysts on this task.

text: Analysing chromatographic data using data mining to monitor petroleum content in water Chromatography is an important analytical technique that has widespread use in environmental applications. A typical application is the monitoring of water samples to determine if they contain petroleum. These tests are mandated in many countries to enable environmental agencies to determine if tanks used to store petrol are leaking into local water systems.
Chromatographic techniques, typically using gas or liquid chromatography coupled with mass spectrometry, allow an analyst to detect a vast array of compounds—potentially in the order of thousands. Accurate analysis relies heavily on the skills of a limited pool of experienced analysts utilising semi-automatic techniques to analyse these datasets—making the outcomes subjective.
The focus of current laboratory data analysis systems has been on refinements of existing approaches. The work described here represents a paradigm shift achieved through applying data mining techniques to tackle the problem. These techniques are compelling because the efficacy of preprocessing methods, which are essential in this application area, can be objectively evaluated. This paper presents preliminary results using a data mining framework to predict the concentrations of petroleum compounds in water samples. Experiments demonstrate that the framework can be used to produce models of sufficient accuracy—measured in terms of root mean squared error and correlation coefficients—to offer the potential for significantly reducing the time spent by analysts on this task.

year: 2009

title: Genre and authentic written discourse in Maori and their relevance to the education of students in upper secondary and tertiary Maori-medium educational settings

authors: Houia-Roberts, Ngaere

subjects: Māori medium education

abstract: I report here on part of a research project whose primary aim was to investigate a range of authentic Māori texts in terms of the search for commonly occurring organisational and cognitive patterns, and to consider the pedagogic implications of this investigation in terms of the teaching of writing skills in Māori-medium educational settings. An examination of a range of text segments written by educated and highly proficient users of Māori suggests that, in terms of textual relationships, there are characteristic patterns of organisation that characterise the three genres that appear to be most commonly required of student writers in Māori-medium upper secondary and tertiary educational contexts, that is, the genres of arguing, explaining and describing. Another part of the project – an examination of whole texts in terms of overall, structuring – is reported in the next issue of this journal.

text: Genre and authentic written discourse in Maori and their relevance to the education of students in upper secondary and tertiary Maori-medium educational settings I report here on part of a research project whose primary aim was to investigate a range of authentic Māori texts in terms of the search for commonly occurring organisational and cognitive patterns, and to consider the pedagogic implications of this investigation in terms of the teaching of writing skills in Māori-medium educational settings. An examination of a range of text segments written by educated and highly proficient users of Māori suggests that, in terms of textual relationships, there are characteristic patterns of organisation that characterise the three genres that appear to be most commonly required of student writers in Māori-medium upper secondary and tertiary educational contexts, that is, the genres of arguing, explaining and describing. Another part of the project – an examination of whole texts in terms of overall, structuring – is reported in the next issue of this journal.

year: 2003-09