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Item Open Access Assessing the Validity of the Quartile Risk Model of Dissociation for Predicting Deliberate Self-Harm(Informa UK Limited, 2019) Dorahy, Martin; Carrell, JM; Thompson, NDeliberate self-harm (DSH) involves a physical act with the intent of harming the self. There are many precipitants to this behavior, with dissociation receiving increasing attention. The current study examined the quartile risk model for predicting deliberate self-harm, which proposes that four quadrants of dissociation (low normative, high normative, low clinical, and high clinical) represent varying levels of risk for engagement in DSH. The model posits that quadrants one and three (low normative, low clinical), protect against engagement in deliberate self-harm. Quadrants two and four (high normative, high clinical), represent an increased risk of engaging in DSH. The current study also investigated the association between shame and deliberate self-harm. College students (n = 247) completed measures assessing trait dissociation, state and trait shame, and deliberate self-harm. Results did not support the quartile risk model, rather they suggested a general increasing level of deliberate self-harm with heightened dissociation. Furthermore, trait shame was significantly associated with deliberate self-harm. Significantly more state shame was found to occur before engaging in deliberate self-harm relative to after. Results suggest shame and dissociation are related to increased DSH.Item Open Access Trait-habitat associations explain novel bird assemblages mixing native and alien species across New Zealand landscapes(Wiley, 2022) Barnagaud, JY; Brockerhoff, Eckehard G.; Mossion, R; Dufour, P; Pavoine, S; Deconchat, M; Barbaro, L; Thomassen HAim: Species introductions have reshaped island faunas for the last 200 years, often threatening native biodiversity. Approximately equal numbers of native and alien species currently co-occur in the New Zealand avifauna, but they show distinct habitat use. Antagonistic interactions, habitat affinities and legacies of introduction history may concur to explain their segregation along habitat gradients. To investigate these processes, we explored how habitat, ecological traits and introduction history relate with the current composition of bird assemblages. Location: New Zealand. Taxon: Birds. Methods: We analysed 917 bird point counts spread along habitat and elevation gradients in the Canterbury region, South Island and related 10 ecological traits to landscape composition using a three-table ordination method known as “RLQ analysis”, accounting for spatial autocorrelation and phylogeny. We tested whether alien species’ positions in the RLQ were related to proxies of introduction history. Results: Eighteen endemic, 11 native and 19 alien species were distributed along a gradient from forest to open-habitat assemblages, in relation to foraging mode, nesting site and body size. A second gradient segregated species between native and exotic forests according to territoriality, sedentarity and diet. Traits accounted for the separation of native and alien bird species in forests, but not in open habitats. Phylogenetic signals emerged from the separation of native and alien species by forest type, and spatial structures suggested a landscape-level, rather than regional or local determinism. These correlations were independent of introduction history, although open-habitat assemblages tended to host alien species introduced later in time. Main conclusions: Habitat type and resource availability explain the spatial partitioning of New Zealand bird assemblages between native and alien species more consistently than competitive exclusion. We conclude that trait-mediated ecological differences among species have likely played a predominant role in species’ segregation among landscapes, while maintaining endemic bird assemblages in native forests.Item Open Access The lack of access to anti-epileptic drugs in rural India(BMJ, 2015) Mathias, KaarenItem Open Access Sexual selection on non-ornamental traits is underpinned by evidence of genetic constraints on sex-biased expression in dusky pipefish(2024) Tosto N; Rose E; Mason H; Mank J; Flanagan, SarahSpecies without dimorphic secondary sex characteristics easily visible to humans, such as diference in size or morphology, are expected to experience low levels of sex-specifi c selection. However, monomorphism in classic visible traits could be a result of genetic or physiological constraints that prevent the sexes from reaching divergent fi tness optima. Additionally, biochemical and molecular work has revealed a variety of less easily observed phenotypes that none-the-less exhibit profound dimorphism. Sex- specifi c selection could act on these more subtle, less visible, traits. We investigate sex-specifi c selection in the polygynandrous dusky pipe sh (Syngnathus oridae), which lacks size, color, and morphological dimorphism. Using experimental breeding populations, we revealed that although males and females have similar opportunities for sexual selection, only males experience signi ficant sexual selection pressures on body size. We also investigated patterns of sex-biased and sex-specifi c gene expression in gonads, livers, and gills, and tested whether genes with highly divergent expression patterns between the sexes are more likely to be tissue specifi c, and therefore relieved of genetic constraints. We. Sex-bias in gene expression was widespread, although the reproductive organs had the most sex-biased and sex-specifi c genes. Sex-specifi c selection on gene expression in gills was primarily related to immune response, whereas the liver and gonads had a wide variety of cellular processes, as well as reproductive proteins, showing sex-biased expression. These sex-biased genes are likely less constrained by pleiotropy, as they were more organ-speci fic in their expression patterns. Altogether, we nd evidence for ongoing and historical sex-specifi c selection in the dusky pipe sh.Item Open Access Why the Indo-Pacific needs a self-confident America(Institute for Indo-Pacific Affairs, 2024) Tan, Alex; Vanvari NItem Open Access Mākū: te hā o Haupapa: Moisture, the breath of Haupapa(2023) Marks S; Randerson J; Shearer R; Bull R; Purdie, HeatherItem Open Access New Zealand’s Economic Security Dilemma: International Pressures, Domestic Constraints(Institute for Indo-Pacific Affairs, 2024) Tan, Alex; Vanvari NItem Open Access Item Open Access Lost voices: ethnic diversity in the New Zealand parliament will decline after the 2023 election(2023) Tan, Alex; Vanvari NItem Open Access Reading the tea leaves: Taiwan's November 2022 ‘midterm’ elections(9DashLine, 2023) Tan, Alex; Kumar MItem Open Access American democracy: the poster child of what exactly?(Stuff.co.nz, 2022) Mills K; Tan, AlexItem Open Access Cyclic Heat Transfer Solver for OpenFOAM(OpenCFD Ltd, 2023) Coe, Michael; Holland, DanielChannels with periodically repeating geometries are often simulated using periodic or cyclic boundary conditions. By calculating the temperature and flow field in one periodic module, the resulting distributions can be generalized to multiple modules. This reduces the computational load by simulating a single module versus the whole structure. This is a particularly useful approach when performing large optimisation studies of periodic geometries, such as compact heat exchangers. Currently, OpenFOAM only supports cyclic boundary conditions for pressure and momentum, but not heat transfer. The present work introduces a steady and an unsteady solver for cyclic heat transfer with constant wall temperature boundary conditions. The solver is validated against analytical Hagen-Poiseuille flow and two configurations of periodic wavy channels. In the latter case, the results are compared to existing literature.