Institution
Luleå University of Technology
Education•Luleå, Sweden•
About: Luleå University of Technology is a education organization based out in Luleå, Sweden. It is known for research contribution in the topics: Context (language use) & Adsorption. The organization has 4581 authors who have published 14640 publications receiving 351045 citations. The organization is also known as: Luleå University College.
Papers published on a yearly basis
Papers
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TL;DR: In this article, the authors used a Bayesian hierarchical model to estimate trends in diabetes prevalence, defined as fasting plasma glucose of 7.0 mmol/L or higher, or history of diagnosis with diabetes, or use of insulin or oral hypoglycaemic drugs in 200 countries and territories in 21 regions, by sex and from 1980 to 2014.
2,782 citations
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TL;DR: A probabilistic routing protocol for intermittently connected networks where there is no guarantee that a fully connected path between source and destination exist at any time, rendering traditional routing protocols unable to deliver messages between hosts.
Abstract: We consider the problem of routing in intermittently connected networks. In such networks there is no guarantee that a fully connected path between source and destination exist at any time, rendering traditional routing protocols unable to deliver messages between hosts. We propose a probabilistic routing protocol for such networks.
2,530 citations
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TL;DR: In this paper, the joint maximum likelihood (ML) symbol-time and carrier-frequency offset estimator is presented for orthogonal frequency-division multiplexing (OFDM) systems.
Abstract: We present the joint maximum likelihood (ML) symbol-time and carrier-frequency offset estimator in orthogonal frequency-division multiplexing (OFDM) systems. Redundant information contained within the cyclic prefix enables this estimation without additional pilots. Simulations show that the frequency estimator may be used in a tracking mode and the time estimator in an acquisition mode.
2,232 citations
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TL;DR: A structural model for amyloid fibrils formed by the 40-residue β-amyloid peptide associated with Alzheimer's disease (Aβ1–40) is presented, based on a set of experimental constraints from solid state NMR spectroscopy and incorporates the cross-β structural motif established by x-ray fiber diffraction.
Abstract: We present a structural model for amyloid fibrils formed by the 40-residue beta-amyloid peptide associated with Alzheimer's disease (Abeta(1-40)), based on a set of experimental constraints from solid state NMR spectroscopy. The model additionally incorporates the cross-beta structural motif established by x-ray fiber diffraction and satisfies constraints on Abeta(1-40) fibril dimensions and mass-per-length determined from electron microscopy. Approximately the first 10 residues of Abeta(1-40) are structurally disordered in the fibrils. Residues 12-24 and 30-40 adopt beta-strand conformations and form parallel beta-sheets through intermolecular hydrogen bonding. Residues 25-29 contain a bend of the peptide backbone that brings the two beta-sheets in contact through sidechain-sidechain interactions. A single cross-beta unit is then a double-layered beta-sheet structure with a hydrophobic core and one hydrophobic face. The only charged sidechains in the core are those of D23 and K28, which form salt bridges. Fibrils with minimum mass-per-length and diameter consist of two cross-beta units with their hydrophobic faces juxtaposed.
1,842 citations
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TL;DR: This paper proposes PRoPHET, a probabilistic routing protocol for intermittently connected networks and shows that it is able to deliver more messages than Epidemic Routing with a lower communication overhead.
Abstract: In this paper, we address the problem of routing in intermittently connected networks. In such networks there is no guarantee that a fully connected path between source and destination exists at any time, rendering traditional routing protocols unable to deliver messages between hosts. There does, however, exist a number of scenarios where connectivity is intermittent, but where the possibility of communication still is desirable. Thus, there is a need for a way to route through networks with these properties. We propose PRoPHET, a probabilistic routing protocol for intermittently connected networks and compare it to the earlier presented Epidemic Routing protocol through simulations. We show that PRoPHET is able to deliver more messages than Epidemic Routing with a lower communication overhead.
1,750 citations
Authors
Showing all 4648 results
Name | H-index | Papers | Citations |
---|---|---|---|
Kaj Blennow | 160 | 1845 | 116237 |
Xiaodong Wang | 135 | 1573 | 117552 |
Henrik Zetterberg | 125 | 1736 | 72452 |
Athanasios V. Vasilakos | 113 | 654 | 41210 |
Lars Berglund | 97 | 641 | 42300 |
Dieter Bimberg | 97 | 1531 | 45944 |
Johan A. Martens | 88 | 720 | 28126 |
Daniel C. Ralph | 88 | 321 | 38700 |
Gwendolen Jull | 87 | 410 | 26556 |
Ingemar Lundström | 80 | 566 | 23771 |
Paul A. Webley | 70 | 374 | 18633 |
Bo Lundbäck | 69 | 281 | 15201 |
Frans C. De Schryver | 68 | 264 | 13913 |
Kristiina Oksman | 67 | 260 | 19582 |
Bo Liedberg | 66 | 349 | 18540 |