title: μ-Chart-based specification and refinement

authors: Goldson, Doug

subjects: computer science

abstract: We introduce two new notions of refinement for μ-charts and compare them with the existing notion due to Scholz. The two notions are interesting and important because one gives rise (via a logic) to a calculus for constructing refinements and the other gives rise (via model checking) to a way of checking that refinements hold. Thus we bring together the two competing worlds of model checking and proof.

text: μ-Chart-based specification and refinement We introduce two new notions of refinement for μ-charts and compare them with the existing notion due to Scholz. The two notions are interesting and important because one gives rise (via a logic) to a calculus for constructing refinements and the other gives rise (via model checking) to a way of checking that refinements hold. Thus we bring together the two competing worlds of model checking and proof.

year: 2002

title: Improving estimates of inequality and poverty from urban China’s household income and expenditure survey

authors: Gibson, John

subjects: income distribution

abstract: In urban China the Household Income and Expenditure Survey requires respondents to keep a daily expenditure diary for a full 12-month period. This onerous reporting task makes it difficult to recruit households into the survey, compromising the representative nature of the sample. In this article we use data on the monthly expenditures of households from two urban areas of China to see if data collection short-cuts, such as extrapolating to annual totals from expenditure reports in only some months of the year, would harm the accuracy of annual expenditure, inequality and poverty estimates. Our results show that replacing 12-month diaries with simple extrapolations from either one, two, four or six months would cause a sharp increase in estimates of annual inequality and poverty. This finding also undermines international comparisons of inequality statistics because no country other than China uses such comprehensive 12-month expenditure records. But a corrected form of extrapolation, based on correlations between the same household’s expenditures in different months of the year, gives much smaller errors in estimates of inequality and poverty.

text: Improving estimates of inequality and poverty from urban China’s household income and expenditure survey In urban China the Household Income and Expenditure Survey requires respondents to keep a daily expenditure diary for a full 12-month period. This onerous reporting task makes it difficult to recruit households into the survey, compromising the representative nature of the sample. In this article we use data on the monthly expenditures of households from two urban areas of China to see if data collection short-cuts, such as extrapolating to annual totals from expenditure reports in only some months of the year, would harm the accuracy of annual expenditure, inequality and poverty estimates. Our results show that replacing 12-month diaries with simple extrapolations from either one, two, four or six months would cause a sharp increase in estimates of annual inequality and poverty. This finding also undermines international comparisons of inequality statistics because no country other than China uses such comprehensive 12-month expenditure records. But a corrected form of extrapolation, based on correlations between the same household’s expenditures in different months of the year, gives much smaller errors in estimates of inequality and poverty.

year: 2002-01

title: Kaitiakitanga - Active guardianship, responsibilities and relationships with the world: Towards a bio-cultural future In early childhood education

authors: Paul-Burke, Kura

abstract: The world is a vast family, and humans are children of the earth and sky, and cousins to all living things. Such unity means that nature is the ultimate teacher about life (Royal 2010, p. 9).
For Māori (indigenous peoples of Aotearoa New Zealand) the term kaitiakitanga (pronounced, kye-tee-ah-key-tar-ngah) is often used to refer to the active guardianship and management of natural organisms and their environments. Mātauranga Māori or Māori knowledge positions humans within nature and focuses on ways in which cultural understandings and intergenerational connections between people and their biophysical contexts assist in the retention and protection of biodiversity and ecologically sustainable ecosystems. This entry critically reflects notions of kaitiakitanga and bio-cultural connectivity as important and meaningful contributors for young children and their relationships with and for the world.

text: Kaitiakitanga - Active guardianship, responsibilities and relationships with the world: Towards a bio-cultural future In early childhood education The world is a vast family, and humans are children of the earth and sky, and cousins to all living things. Such unity means that nature is the ultimate teacher about life (Royal 2010, p. 9).
For Māori (indigenous peoples of Aotearoa New Zealand) the term kaitiakitanga (pronounced, kye-tee-ah-key-tar-ngah) is often used to refer to the active guardianship and management of natural organisms and their environments. Mātauranga Māori or Māori knowledge positions humans within nature and focuses on ways in which cultural understandings and intergenerational connections between people and their biophysical contexts assist in the retention and protection of biodiversity and ecologically sustainable ecosystems. This entry critically reflects notions of kaitiakitanga and bio-cultural connectivity as important and meaningful contributors for young children and their relationships with and for the world.

year: 2015