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Search Results - structural (variable OR (variables OR variables))
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Investigations into the use of a novel graphene wool sampler for organic air pollutants
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Taxonomy, phylogeny and biogeography of cisticolas (Cisticola spp.)
Published 2015“…Most of the mean divergence date estimates correlated with periods of climate variability and episodes during which there is evidence for high lake levels in Africa, rather than correlating with Plio-Pleistocene glaciation, offering evidence that open habitats may have become fragmented during extremes of both arid and humid climates.…”
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A multi-scale study on the movement ecology of Afrotropical waterbirds
Published 2016“…Processes driving movement can occur across multiple spatiotemporal scales and have important consequences for the structure and dynamics of populations, communities and ecosystems. …”
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Numerical model investigation of near-surface circulation features of the Angola Basin
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Acid-base regulation in the sea urchin Parechinus angulosus during CO₂-induced seawater acidification
Published 2014“…This study provides further support that sea urchins exposed to natural CO₂ variability possess a limited capacity to regulate extracellular acid-base disturbances. …”
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The characteristics of Rossby wave packets in the South African domain
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Individual contributions to group behaviour in the cooperatively breeding southern ground-hornbill Bucorvus leadbeateri
Published 2023“…In birds, cooperative breeding is found mainly in harsh regions with greater environmental variability, such that individuals might do better to help relatives than attempt to breed themselves. …”
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The rating of sluicing flumes in combination with sharp-crested and crump weirs under modular and non-modular flow conditions
Published 2012Get full text
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Through the keyhole: Ethnographic analysis of cyber violence in Egypt
Published 2019“…It focuses mainly on individual-to-individual perpetration of violence, how, when and why people variably define unsolicited intervention with their data as "violence", and how, when and why, they choose other notions to define such incident(s). …”
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The use of operational harmful algal bloom monitoring systems in South Africa to assess long term changes to bloom occurrence & impacts for aquaculture
Published 2021“…For this study, high-resolution satellite remote sensing observations from 16 years of MODIS-Aqua (1 km) and one month of Sentinel-3 OLCI (300 m), using regionally optimised blended algorithms, were used to investigate the spatial distribution and temporal variability of chlorophyll-a (Chl-a) along the south coast of South Africa. …”
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An exploratory study of financial access along the renewable energy sector value chain: the case of SMMEs in South Africa
Published 2025“…The findings highlighted that financial stability was closely tied to project scale, with larger-scale projects providing more consistent revenue streams, while SMMEs in niche sectors often faced revenue variability. Financial management practices were essential for sustaining operations, particularly in managing costs and planning for fluctuating revenues. …”
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Communication and sexual selection in the barking gecko (Ptenopus kochi)
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Phylogenetic and morphometric studies of major internal organ systems of the scarabaeoidea (Coleoptera)
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Early-stage design and development of mine waste valorisation technologies with expert input: a case study of South African sulfide-enriched coal waste
Published 2024“…Analysis of the interview transcripts also showed that much of the variability could be attributed to uncertainty inherent in the decision problem as well as disagreement between experts. …”
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Characterising the response of the mixed and the transitional layers to the passage of storms in the Sub-Antarctic Zone
Published 2020“…The mixed-layer depth (MLD) is used widely as proxy for vertical extent of upper-ocean mixing, with the assumption that it integrates the variability of atmospheric forcing. Recent studies have shown that this shear-driven mixing associated with storms can actually extend below the base of the MLD into the transitional layer (TL). …”
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The status of assisted reproductive technology in the public health sector in Africa – a multi-country survey
Published 2023“…Data were collected via a mostly structured questionnaire (phase one); and semi-structured questionnaire followed by an interview via zoom or WhatsApp calling (phase 2). …”
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The representation of the Kalahari Thermal Low and its induced circulations over southern Africa in observations and models
Published 2025“…This teleconnection is explained by the leading mode of variability, but it is controlled more by the heat dome mechanism rather than by the advection of the mid-tropospheric dry air into the convective region. …”
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The representation of the Kalahari thermal low and its induced circulations over Southern Africa in observations and models
Published 2025“…This teleconnection is explained by the leading mode of variability, but it is controlled more by the heat dome mechanism rather than by the advection of the mid-tropospheric dry air into the convective region. …”
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