| 831. |
- Turesson, Kenny, et al.
(författare)
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The human dimension of vulnerability : A scoping review of the Nordic literature on factors for social vulnerability to climate risks
- 2024
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Ingår i: International Journal of Disaster Risk Reduction. - : Elsevier. - 2212-4209. ; 100
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Forskningsöversikt (refereegranskat)abstract
- The concept of vulnerability has obtained increased research interest due to the ongoing climate change. The concept has a broad and general meaning which makes it necessary to specify what it actually means in any specific context. In exposure to climate risks, it is important to highlight who and what is vulnerable to climate-related hazards. The concept of social vulnerability derives from ongoing research in disaster, developmental, and socio-geographic sciences. Social vulnerability emphasises the social dimension of vulnerability and how different factors in interaction contribute to influence who is vulnerable. This scoping review is part of a larger project that aimed at increasing the understanding of social vulnerability in a Swedish and Nordic context. The review explores what Nordic literature on vulnerability related to climate hazards has identified as relevant for social vulnerability. 32 articles were included and underwent content analysis. The analysis process was characterised by the involvement of the project group in an iterative cross-disciplinary approach to the topic. This study concludes that social vulnerability is a dynamic process in both time and space; the degree of spatial resolution of vulnerability assessments impacts the possibility to detect vulnerable groups; it is in the combination of factors that social vulnerability emerges; and that the finding of risk perception re-emphasises the agency of the individual.
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| 832. |
- van den Broek, Gesa, et al.
(författare)
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Neurocognitive mechanisms of the "testing effect" : a review
- 2016
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Ingår i: Trends in Neuroscience and Education. - : Elsevier. - 2452-0837 .- 2211-9493. ; 5:2, s. 52-66
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Forskningsöversikt (refereegranskat)abstract
- Memory retrieval is an active process that can alter the content and accessibility of stored memories. Of potential relevance for educational practice are findings that memory retrieval fosters better retention than mere studying. This so-called testing effect has been demonstrated for different materials and populations, but there is limited consensus on the neurocognitive mechanisms involved. In this review, we relate cognitive accounts of the testing effect to findings from recent brain-imaging studies to identify neurocognitive factors that could explain the testing effect. Results indicate that testing facilitates later performance through several processes, including effects on semantic memory representations, the selective strengthening of relevant associations and inhibition of irrelevant associations, as well as potentiation of subsequent learning.
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| 833. |
- van der Meer, D, et al.
(författare)
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Brain scans from 21,297 individuals reveal the genetic architecture of hippocampal subfield volumes
- 2020
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Ingår i: Molecular psychiatry. - : Springer Science and Business Media LLC. - 1476-5578 .- 1359-4184. ; 25:11, s. 3053-3065
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Tidskriftsartikel (refereegranskat)abstract
- The hippocampus is a heterogeneous structure, comprising histologically distinguishable subfields. These subfields are differentially involved in memory consolidation, spatial navigation and pattern separation, complex functions often impaired in individuals with brain disorders characterized by reduced hippocampal volume, including Alzheimer’s disease (AD) and schizophrenia. Given the structural and functional heterogeneity of the hippocampal formation, we sought to characterize the subfields’ genetic architecture. T1-weighted brain scans (n = 21,297, 16 cohorts) were processed with the hippocampal subfields algorithm in FreeSurfer v6.0. We ran a genome-wide association analysis on each subfield, co-varying for whole hippocampal volume. We further calculated the single-nucleotide polymorphism (SNP)-based heritability of 12 subfields, as well as their genetic correlation with each other, with other structural brain features and with AD and schizophrenia. All outcome measures were corrected for age, sex and intracranial volume. We found 15 unique genome-wide significant loci across six subfields, of which eight had not been previously linked to the hippocampus. Top SNPs were mapped to genes associated with neuronal differentiation, locomotor behaviour, schizophrenia and AD. The volumes of all the subfields were estimated to be heritable (h2 from 0.14 to 0.27, all p < 1 × 10–16) and clustered together based on their genetic correlations compared with other structural brain features. There was also evidence of genetic overlap of subicular subfield volumes with schizophrenia. We conclude that hippocampal subfields have partly distinct genetic determinants associated with specific biological processes and traits. Taking into account this specificity may increase our understanding of hippocampal neurobiology and associated pathologies.
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| 834. |
- van der Velde, Ype, et al.
(författare)
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Consequences of mixing assumptions for time-variable travel time distributions
- 2015
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Ingår i: Hydrological Processes. - : Wiley. - 0885-6087 .- 1099-1085. ; 29:16, s. 3460-3474
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Tidskriftsartikel (refereegranskat)abstract
- The current generation of catchment travel time distribution (TTD) research, integrating nearly three decades of work since publication of Water's Journey from Rain to Stream, seeks to represent the full distribution in catchment travel times and its temporal variability. Here, we compare conceptualizations of increasing complexity with regards to mixing of water storages and evaluate how these assumptions influence time-variable TTD estimates for two catchments with contrasting climates: the Gardsjon catchment in Sweden and the Marshall Gulch catchment in Arizona, USA. Our results highlight that, as long as catchment TTDs cannot be measured directly but need to be inferred from input-output signals of catchments, the inferred catchment TTDs depend strongly on the underlying assumptions of mixing within a catchment. Furthermore, we found that the conceptualization of the evapotranspiration flux strongly influences the inferred travel times of stream discharge. For the wet and forested Gardsjon catchment in Sweden, we inferred that evapotranspiration most likely resembles a completely mixed sample of the water stored in the catchment; however, for the drier Marshall Gulch catchment in Arizona, evapotranspiration predominantly contained the younger water stored in the catchment. For the Marshall Gulch catchment, this higher probability for young water in evapotranspiration resulted in older water in the stream compared to travel times inferred with assumptions of complete mixing. New observations that focus on the TTD of the evapotranspiration flux and the actual travel time of water through a catchment are necessary to improve identification of mixing and consequently travel times of stream water. Copyright (c) 2014 John Wiley & Sons, Ltd.
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| 836. |
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| 837. |
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| 838. |
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| 839. |
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| 840. |
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