title: Exploring, exploiting and evolving diversity of aquatic ecosystem models: A community perspective

authors: Janssen, Annette B.G.

subjects: Water quality

abstract: Here, we present a community perspective on how to explore, exploit and evolve the diversity in aquatic ecosystem models. These models play an important role in understanding the functioning of aquatic ecosystems, filling in observation gaps and developing effective strategies for water quality management. In this spirit, numerous models have been developed since the 1970s. We set off to explore model diversity by making an inventory among 42 aquatic ecosystem modellers, by categorizing the resulting set of models and by analysing them for diversity. We then focus on how to exploit model diversity by comparing and combining different aspects of existing models. Finally, we discuss how model diversity came about in the past and could evolve in the future. Throughout our study, we use analogies from biodiversity research to analyse and interpret model diversity. We recommend to make models publicly available through open-source policies, to standardize documentation and technical implementation of models, and to compare models through ensemble modelling and interdisciplinary approaches. We end with our perspective on how the field of aquatic ecosystem modelling might develop in the next 5–10 years. To strive for clarity and to improve readability for non-modellers, we include a glossary.

text: Exploring, exploiting and evolving diversity of aquatic ecosystem models: A community perspective Here, we present a community perspective on how to explore, exploit and evolve the diversity in aquatic ecosystem models. These models play an important role in understanding the functioning of aquatic ecosystems, filling in observation gaps and developing effective strategies for water quality management. In this spirit, numerous models have been developed since the 1970s. We set off to explore model diversity by making an inventory among 42 aquatic ecosystem modellers, by categorizing the resulting set of models and by analysing them for diversity. We then focus on how to exploit model diversity by comparing and combining different aspects of existing models. Finally, we discuss how model diversity came about in the past and could evolve in the future. Throughout our study, we use analogies from biodiversity research to analyse and interpret model diversity. We recommend to make models publicly available through open-source policies, to standardize documentation and technical implementation of models, and to compare models through ensemble modelling and interdisciplinary approaches. We end with our perspective on how the field of aquatic ecosystem modelling might develop in the next 5–10 years. To strive for clarity and to improve readability for non-modellers, we include a glossary.

year: 2015

title: Arylstibonic acids [H₈(RSb)₁₂O₂₈]; precursors to organometallic isopolyoxostibonates [Na₂H₉(RSb)₁₂O₃₀]-, (R = aryl).

authors: Clark, Christopher J.

subjects: chemistry

abstract: Electrospray ionisation mass spectrometry shows that arylstibonic acids, RSbO₃H₂, give rise to oxo-bridged clusters derived from [H₈(RSb)₁₂O₂₈] which act as inorganic crown ligands towards Na+ cations; structure determination of one derivative revealed a cage-like anion [Na₂H₉(p-O₂NC₆H₄Sb)₁₂O₃₀.4H₂O]-.

text: Arylstibonic acids [H₈(RSb)₁₂O₂₈]; precursors to organometallic isopolyoxostibonates [Na₂H₉(RSb)₁₂O₃₀]-, (R = aryl). Electrospray ionisation mass spectrometry shows that arylstibonic acids, RSbO₃H₂, give rise to oxo-bridged clusters derived from [H₈(RSb)₁₂O₂₈] which act as inorganic crown ligands towards Na+ cations; structure determination of one derivative revealed a cage-like anion [Na₂H₉(p-O₂NC₆H₄Sb)₁₂O₃₀.4H₂O]-.

year: 2009

title: Maori children : Conceptions of Death and Tangihanga

authors: Jacob, Juanita Emily

subjects: Maori

abstract: Research pertaining to Maori children‟s experiences and perceptions of death and tangihanga is sparse. Much of what is available, relating to children and their experiences with death, particularly death of a loved one, is generalised and stems from Western paradigms of knowledge. In contrast, this study aimed to investigate Maori children‟s experience relating to death and tangi through the eyes of Maori parents. Five areas were explored with Maori parents: (1) childhood experiences of Maori parents relating to death and tangi, (2) parental conceptualisation pertaining to ideas of an afterlife (3) how and when Maori parents talk with children about topics relating to death, tangi and an afterlife (4) how Maori children understand and conceptualise these events, and (5) how these practices will continue on in the future. Findings of this study suggest that Maori children: (a) received abundant support from kinship networks to help them cope with their grief, (b) they were included and involved in all aspects relating to death and tangi, (c) they were encouraged to express emotions openly and without restraint, (d) they understood and comprehended death through personal experience and exposure to tangi, (e) the business of grieving came secondary to the fact that tangi was more like a holiday with family, (f) Maori parents informed and talked to their children about death and tangi, and (g) they often use both Christian ideologies and cultural beliefs to explained death and afterlife to their children. From this study we learn that death was not hidden from children, that parents talked with their children in very open and age relevant ways, and considered their children‟s participation in tangi as an important way to grieve and ensure continuity with kinship networks and support. This study suggests that the challenge now is to ensure that these practices continue to persist between parents and their children, and continue on through generations.

text: Maori children : Conceptions of Death and Tangihanga Research pertaining to Maori children‟s experiences and perceptions of death and tangihanga is sparse. Much of what is available, relating to children and their experiences with death, particularly death of a loved one, is generalised and stems from Western paradigms of knowledge. In contrast, this study aimed to investigate Maori children‟s experience relating to death and tangi through the eyes of Maori parents. Five areas were explored with Maori parents: (1) childhood experiences of Maori parents relating to death and tangi, (2) parental conceptualisation pertaining to ideas of an afterlife (3) how and when Maori parents talk with children about topics relating to death, tangi and an afterlife (4) how Maori children understand and conceptualise these events, and (5) how these practices will continue on in the future. Findings of this study suggest that Maori children: (a) received abundant support from kinship networks to help them cope with their grief, (b) they were included and involved in all aspects relating to death and tangi, (c) they were encouraged to express emotions openly and without restraint, (d) they understood and comprehended death through personal experience and exposure to tangi, (e) the business of grieving came secondary to the fact that tangi was more like a holiday with family, (f) Maori parents informed and talked to their children about death and tangi, and (g) they often use both Christian ideologies and cultural beliefs to explained death and afterlife to their children. From this study we learn that death was not hidden from children, that parents talked with their children in very open and age relevant ways, and considered their children‟s participation in tangi as an important way to grieve and ensure continuity with kinship networks and support. This study suggests that the challenge now is to ensure that these practices continue to persist between parents and their children, and continue on through generations.

year: 2011