| 1. |
- Capannini, Gabriele, et al.
(författare)
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Adaptive Collision Culling for Massive Simulations by a Parallel and Context-Aware Sweep and Prune Algorithm
- 2018
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Ingår i: IEEE Transactions on Visualization and Computer Graphics. - 1077-2626 .- 1941-0506. ; 4:7, s. 2064-2077
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Tidskriftsartikel (refereegranskat)abstract
- We present an improved parallel Sweep and Prune algorithm that solves the dynamic box intersection problem in three dimensions. It scales up to very large datasets, which makes it suitable for broad phase collision detection in complex moving body simulations. Our algorithm gracefully handles high-density scenarios, including challenging clustering behavior, by using a double-axis sweeping approach and a cache-friendly succinct data structure. The algorithm is realized by three parallel stages for sorting, candidate generation, and object pairing. By the use of temporal coherence, our sorting stage runs with close to optimal load balancing. Furthermore, our approach is characterized by a work-division strategy that relies on adaptive partitioning, which leads to almost ideal scalability. In addition, for scenarios that involves intense clustering along several axes simultaneously, we propose an enhancement that increases the context-awareness of the algorithm. By exploiting information gathered along three orthogonal axes, an efficient choice of what range query to perform can be made per object during run-time. Experimental results show high performance for up to millions of objects on modern multi-core CPUs.
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| 2. |
- Holm, Lena, 1951-, et al.
(författare)
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Gravrösen i Norrland
- 2018
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Rapport (övrigt vetenskapligt/konstnärligt)
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| 3. |
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| 4. |
- Larsson, Thomas B, 1953-
(författare)
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Runstenar i Norrland : en översikt
- 2015
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Rapporten ger en översikt över runstenar i Norrland (Gästrikland, Hälsingland, Medelpad och Jämtland).
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| 5. |
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| 6. |
- Stålberg, Anna, 1976-, et al.
(författare)
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Using an interactive communication tool in healthcare situations : Patterns in young children's use of participation cues
- 2019
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Ingår i: Journal of Child Health Care. - : SAGE PUBLICATIONS LTD. - 1367-4935 .- 1741-2889.
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Tidskriftsartikel (refereegranskat)abstract
- This study forms part of a larger project about developing and using interactive technology to facilitate young children's participation in healthcare situations. Children's participation in these situations improves their motivation and situated understanding. Likewise, their participation helps professionals to more fully understand the child's perspective. In the project, an interactive communication tool, that is, an application suitable for tablet use, was developed with children, aged three to five, in two clinical settings. When tested, the children's participation cues, identified from video recordings of healthcare situations, were understood as having curious, thoughtful or affirmative meanings. This study aimed to investigate the similarities and differences in the young children's use of participation cues when using an interactive communication tool in healthcare situations. A secondary analysis of the identified cues was performed focusing on age, setting and examination or procedure. In total, 2167 cues were identified representing either curious, thoughtful or affirmative cues. The curious cues were mainly used (66%), followed by thoughtful (28%) and affirmative (6%) cues. Differences in cue usage were seen in relation to the children's age and setting. Knowing how children may react to common healthcare procedures may help increase healthcare professionals' awareness of the need to support children in an individual and situational way.
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