Institution
Linköping University
Education•Linköping, Sweden•
About: Linköping University is a education organization based out in Linköping, Sweden. It is known for research contribution in the topics: Population & Thin film. The organization has 15671 authors who have published 50013 publications receiving 1542189 citations.
Topics: Population, Thin film, Poison control, Health care, Photoluminescence
Papers published on a yearly basis
Papers
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TL;DR: Cell-free implants, comprising carbodiimide crosslinked recombinant human collagen (RHC) can achieve stable regeneration and therefore, represent a potentially safe alternative to donor organ transplantation.
233 citations
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TL;DR: The benefit of mammographic screening in terms of lives saved is greater in absolute terms than the harm in termsof overdiagnosis.
Abstract: Setting The Swedish Two-County randomized trial of mammographic screening for breast cancer, and the UK Breast Screening Programme in England, ages 50-69 years. Methods We estimated the absolute numbers of deaths avoided and additional cases diagnosed in the study group (active study population) of the Swedish Two-County Trial, by comparison with the control group (passive study population). We estimated the same quantities for the mortality and incidence rates in England (1974-2004 and 1974-2003, respectively). We used Poisson regression for statistical inference. Results A substantial and significant reduction in breast cancer mortality was associated with screening in both the Two-County Trial (P , 0.001) and the screening programme in England (P , 0.001). The absolute benefits were estimated as 8.8 and 5.7 breast cancer deaths prevented per 1000 women screened for 20 years starting at age 50 from the Two-County Trial and screening programme in England, respectively. The corresponding estimated numbers of cases overdiagnosed per 1000 women screened for 20 years were, respectively, 4.3 and 2.3 per 1000. Conclusions The benefit of mammographic screening in terms of lives saved is greater in absolute terms than the harm in terms of overdiagnosis. Between 2 and 2.5 lives are saved for every overdiagnosed case.
233 citations
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22 Aug 2017TL;DR: In this article, a 3D-CNN-based semantic segmentation of 3D point cloud data is proposed, which achieves below-expected results due to the limited availability of annotated datasets.
Abstract: Semantic segmentation of 3D point clouds is a challenging problem with numerous real-world applications. While deep learning has revolutionized the field of image semantic segmentation, its impact on point cloud data has been limited so far. Recent attempts, based on 3D deep learning approaches (3D-CNNs), have achieved below-expected results. Such methods require voxelizations of the underlying point cloud data, leading to decreased spatial resolution and increased memory consumption. Additionally, 3D-CNNs greatly suffer from the limited availability of annotated datasets.
233 citations
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TL;DR: It is shown that theSSOR-cg method for (i) and (ii) can be implemented in such a way that each step requires only two sweeps through successive rows and columns of A respectively and how the pseudoinverse solution can be computed by a two step procedure.
Abstract: Iterative methods are developed for computing the Moore-Penrose pseudoinverse solution of a linear systemAx=b, whereA is anm ×n sparse matrix. The methods do not require the explicit formation ofA T A orAA T and therefore are advantageous to use when these matrices are much less sparse thanA itself. The methods are based on solving the two related systems (i)x=A T y,AA T y=b, and (ii)A T Ax=A T b. First it is shown how theSOR-andSSOR-methods for these two systems can be implemented efficiently. Further, the acceleration of theSSOR-method by Chebyshev semi-iteration and the conjugate gradient method is discussed. In particular it is shown that theSSOR-cg method for (i) and (ii) can be implemented in such a way that each step requires only two sweeps through successive rows and columns ofA respectively. In the general rank deficient and inconsistent case it is shown how the pseudoinverse solution can be computed by a two step procedure. Some possible applications are mentioned and numerical results are given for some problems from picture reconstruction.
233 citations
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TL;DR: In this paper, the authors demonstrate a substantial photochemical production of four carboxylic acids (oxalic, malonic, formic, and acetic acid) in a humic lake.
Abstract: . High-molecular-weight dissolved organic matter is abundant in humic lakes and is a large potential source of energy for heterotrophic organisms. These substances are hard to degrade enzymatically because of their high aromaticity and complex structure. However, there is increasing evidence that photochemical processes render the material more bioavailable. We demonstrate a substantial photochemical production of four carboxylic acids (oxalic, malonic, formic, and acetic acid) in a humic lake. The combined production rate in the surface water of these four acids was 19 pg C liter-l h-l with natural sunlight. Furthermore, based on radiotracer studies, we found that the amount of carbon assimilated and oxidized to CO, from malonic, formic, and acetic acid exceeded bacterial carbon production, sometimes by more than one order of magnitude. This implies that carboxylic acids were major bacterioplankton substrates. Nevertheless, under natural sunlight at the lake surface, microbial utilization of carboxylic acids was substantially lower than the photochemical production of the acids. Hence, photochemically produced carboxylic acids may accumulate in sunlight exposed environments and may also serve as bacterial substrates after mixing into deeper layers, or during night.
233 citations
Authors
Showing all 15844 results
Name | H-index | Papers | Citations |
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Rui Zhang | 151 | 2625 | 107917 |
Jun Lu | 135 | 1526 | 99767 |
Jean-Luc Brédas | 134 | 1026 | 85803 |
Lars Wallentin | 124 | 767 | 61020 |
S. Shankar Sastry | 122 | 858 | 86155 |
Gerhard Andersson | 118 | 902 | 49159 |
Olle Inganäs | 113 | 627 | 50562 |
Antonio Facchetti | 111 | 602 | 51885 |
Ray H. Baughman | 110 | 616 | 60009 |
Michel W. Barsoum | 106 | 543 | 60539 |
Louis J. Ignarro | 106 | 335 | 46008 |
Per Björntorp | 105 | 386 | 40321 |
Jan Lubinski | 103 | 689 | 52120 |
Magnus Johannesson | 102 | 342 | 40776 |
Barbara Riegel | 101 | 507 | 77674 |