title: Subject metadata support powered by Maui

authors: Medelyan, Olena

subjects: metadata extraction

abstract: Selecting subject headings and keywords is a chore for all metadata editors, who often leave these fields blank or incomplete—even when there are no guidelines and any word or phrase can be chosen. For example, tags are absent from the vast majority of citations in the social scholarly reference repository CiteULike. Libraries employ professional cataloguers and indexers to ensure consistent subject metadata in their records. Because this task is time-consuming, professionals and volunteers alike would welcome high-quality automatically generated suggestions for the main topics of a document.

text: Subject metadata support powered by Maui Selecting subject headings and keywords is a chore for all metadata editors, who often leave these fields blank or incomplete—even when there are no guidelines and any word or phrase can be chosen. For example, tags are absent from the vast majority of citations in the social scholarly reference repository CiteULike. Libraries employ professional cataloguers and indexers to ensure consistent subject metadata in their records. Because this task is time-consuming, professionals and volunteers alike would welcome high-quality automatically generated suggestions for the main topics of a document.

year: 2010

title: Response of Siliceous Marine Organisms to the Permian-Triassic Climate Crisis Based on New Findings From Central Spitsbergen, Svalbard

authors: Foster, WJ

abstract: Siliceous marine ecosystems play a critical role in shaping the Earth's climate system by influencing rates of organic carbon burial and marine authigenic clay formation (i.e., reverse weathering). The ecological demise of silicifying organisms associated with the Permian-Triassic mass extinction is postulated to have elevated marine authigenic clay formation rates, resulting in a prolonged greenhouse climate during the Early Triassic. Yet, our understanding of the response of siliceous marine organisms during this critical interval is poor. Whilst radiolarians experienced the strongest diversity loss in their evolutionary history and perhaps also the greatest population decline of silica-secreting organisms during this event, only a small number of Griesbachian (post-extinction) localities that record siliceous organisms are known. Here, we report newly discovered latest Changhsingian to early Griesbachian (Clarkina meishanensis - Hindeodus parvus Zone) radiolarians and siliceous sponge spicules from Svalbard. This fauna documents the survival of a low-diversity radiolarian assemblage alongside stem-group hexactinellid sponges making this the first described account of post-extinction silica-secreting organisms from the Permian/Triassic boundary in a shallow marine shelf environment and a mid-northern paleolatitudinal setting. Our findings indicate that latitudinal diversity gradients for silica-secreting organisms following the mass extinction were significantly altered, and that silica productivity was restricted to high latitude and deep water thermal refugia. This result has potential to further shape our understanding of changes in marine dissolved silica levels and in turn rates of reverse weathering, with implications for our understanding of carbon cycle dynamics during this interval.

text: Response of Siliceous Marine Organisms to the Permian-Triassic Climate Crisis Based on New Findings From Central Spitsbergen, Svalbard Siliceous marine ecosystems play a critical role in shaping the Earth's climate system by influencing rates of organic carbon burial and marine authigenic clay formation (i.e., reverse weathering). The ecological demise of silicifying organisms associated with the Permian-Triassic mass extinction is postulated to have elevated marine authigenic clay formation rates, resulting in a prolonged greenhouse climate during the Early Triassic. Yet, our understanding of the response of siliceous marine organisms during this critical interval is poor. Whilst radiolarians experienced the strongest diversity loss in their evolutionary history and perhaps also the greatest population decline of silica-secreting organisms during this event, only a small number of Griesbachian (post-extinction) localities that record siliceous organisms are known. Here, we report newly discovered latest Changhsingian to early Griesbachian (Clarkina meishanensis - Hindeodus parvus Zone) radiolarians and siliceous sponge spicules from Svalbard. This fauna documents the survival of a low-diversity radiolarian assemblage alongside stem-group hexactinellid sponges making this the first described account of post-extinction silica-secreting organisms from the Permian/Triassic boundary in a shallow marine shelf environment and a mid-northern paleolatitudinal setting. Our findings indicate that latitudinal diversity gradients for silica-secreting organisms following the mass extinction were significantly altered, and that silica productivity was restricted to high latitude and deep water thermal refugia. This result has potential to further shape our understanding of changes in marine dissolved silica levels and in turn rates of reverse weathering, with implications for our understanding of carbon cycle dynamics during this interval.

year: 2023-12-01

title: Rangatiratanga - Kawanatanga: Dealing with rhetoric

authors: Nikora, Linda Waimarie

abstract: Numbered among the few Maori appointed to an academic position during the late 1980s, I have seen our discipline and profession, in all its awkward self-consciousness, make genuine attempts to grapple the respond to questions and challenges delivered by Maori and Pakeha alike.  For example, Where is the Maori content in courses?  Why aren’t Maori graduating from professional training programmes?  Why are there not more Maori academics? Where is the place/space for Maori as practitioners, academics, researchers and decision-makers?  Why does it seem that Maori are always on the ‘client’ side of the professional/client equation?  Where are the Maori men?  In responding to these persistent challenges the professional and discipline in Aotearoa/New Zealand has been irreversibly changed, in my opinion.  The change has not been dramatic (psychology is somewhat averse to self-promotion) but, of those changes that have occurred, a definite contribution has been made to advancing Maori development, to building a more bicultural discipline and practice, and to supporting the strength of the Kawanatanga and Rangatiratanga dynamic whose importance I emphasize here.

text: Rangatiratanga - Kawanatanga: Dealing with rhetoric Numbered among the few Maori appointed to an academic position during the late 1980s, I have seen our discipline and profession, in all its awkward self-consciousness, make genuine attempts to grapple the respond to questions and challenges delivered by Maori and Pakeha alike.  For example, Where is the Maori content in courses?  Why aren’t Maori graduating from professional training programmes?  Why are there not more Maori academics? Where is the place/space for Maori as practitioners, academics, researchers and decision-makers?  Why does it seem that Maori are always on the ‘client’ side of the professional/client equation?  Where are the Maori men?  In responding to these persistent challenges the professional and discipline in Aotearoa/New Zealand has been irreversibly changed, in my opinion.  The change has not been dramatic (psychology is somewhat averse to self-promotion) but, of those changes that have occurred, a definite contribution has been made to advancing Maori development, to building a more bicultural discipline and practice, and to supporting the strength of the Kawanatanga and Rangatiratanga dynamic whose importance I emphasize here.

year: 2001