Institution
University of Duisburg-Essen
Education•Essen, Nordrhein-Westfalen, Germany•
About: University of Duisburg-Essen is a education organization based out in Essen, Nordrhein-Westfalen, Germany. It is known for research contribution in the topics: Population & Transplantation. The organization has 16072 authors who have published 39972 publications receiving 1109199 citations.
Papers published on a yearly basis
Papers
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TL;DR: In this article, a relaxed linear elastic micromorphic continuum model with symmetric Cauchy force stresses and curvature contribution depending only on the micro-dislocation tensor is proposed.
Abstract: We formulate a relaxed linear elastic micromorphic continuum model with symmetric Cauchy force stresses and curvature contribution depending only on the micro-dislocation tensor. Our relaxed model is still able to fully describe rotation of the microstructure and to predict nonpolar size effects. It is intended for the homogenized description of highly heterogeneous, but nonpolar materials with microstructure liable to slip and fracture. In contrast to classical linear micromorphic models, our free energy is not uniformly pointwise positive definite in the control of the independent constitutive variables. The new relaxed micromorphic model supports well-posedness results for the dynamic and static case. There, decisive use is made of new coercive inequalities recently proved by Neff, Pauly and Witsch and by Bauer, Neff, Pauly and Starke. The new relaxed micromorphic formulation can be related to dislocation dynamics, gradient plasticity and seismic processes of earthquakes. It unifies and simplifies the understanding of the linear micromorphic models.
247 citations
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TL;DR: For acute ischemic stroke patients included in controlled trials, the easy-to-apply prognostic models based on age and National Institutes of Health Stroke Scale score correctly predicted survival and functional recovery after 3 months.
Abstract: Background and Purpose—An early and reliable prognosis for recovery in stroke patients is important for initiation of
individual treatment and for informing patients and relatives. We recently developed and validated models for predicting survival and functional independence within 3 months after acute stroke, based on age and the National Institutes of Health Stroke Scale score assessed within 6 hours after stroke. Herein we demonstrate the applicability of our models in an independent sample of patients from controlled clinical trials.
Methods—The prognostic models were used to predict survival and functional recovery in 5419 patients from the Virtual
International Stroke Trials Archive (VISTA). Furthermore, we tried to improve the accuracy by adapting intercepts and
estimating new model parameters.
Results—The original models were able to correctly classify 70.4% (survival) and 72.9% (functional recovery) of patients. Because the prediction was slightly pessimistic for patients in the controlled trials, adapting the intercept improved the accuracy to 74.8% (survival) and 74.0% (functional recovery). Novel estimation of parameters, however, yielded no relevant further improvement.
Conclusions—For acute ischemic stroke patients included in controlled trials, our easy-to-apply prognostic models based
on age and National Institutes of Health Stroke Scale score correctly predicted survival and functional recovery after 3
months. Furthermore, a simple adaptation helps to adjust for a different prognosis and is recommended if a large data
set is available. (Stroke. 2008;39:000-000.)
247 citations
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TL;DR: In this article, the authors proposed a new control approach for secure fault-ride through of wind farms connected to the grid through a voltage source converter-based high voltage DC transmission, which initiates a controlled voltage drop in the wind farm grid to achieve a fast power reduction.
Abstract: This paper describes a new control approach for secure fault-ride through of wind farms connected to the grid through a voltage source converter-based high voltage DC transmission. On fault occurrence in the high voltage grid, the proposed control initiates a controlled voltage drop in the wind farm grid to achieve a fast power reduction. In this way overvoltages in the DC transmission link can be avoided. It uses controlled demagnetization to achieve a fast voltage reduction without producing the typical generator short circuit currents and the related electrical and mechanical stress to the wind turbines and the converter. The method is compared to other recent FRT methods for HVDC systems and its superior performance is demonstrated by simulation results.
247 citations
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TL;DR: In this article, the mechanical response of Inconel 625 lattice structures fabricated by Selective Laser Melting (SLM) has been investigated and the high ductility of the lattice enables novel insight into the structural mechanics of AM lattice and the associated deformation photography provides a reference for the validation and verification of numerical models of lattice behaviour.
247 citations
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Menno V. Huisman1, Kenneth J. Rothman2, Miney Paquette3, Christine Teutsch3 +1024 more•Institutions (10)
TL;DR: GLORIA-AF (Global Registry on Long-Term Oral Antithrombotic Treatment in Patients with Atrial Fibrillation) is a prospective, global registry program describing antithrombinotic t...
247 citations
Authors
Showing all 16364 results
Name | H-index | Papers | Citations |
---|---|---|---|
Rui Zhang | 151 | 2625 | 107917 |
Olli T. Raitakari | 142 | 1232 | 103487 |
Anders Hamsten | 139 | 611 | 88144 |
Robert Huber | 139 | 671 | 73557 |
Christopher T. Walsh | 139 | 819 | 74314 |
Patrick D. McGorry | 137 | 1097 | 72092 |
Stanley Nattel | 132 | 778 | 65700 |
Luis M. Liz-Marzán | 132 | 616 | 61684 |
Dirk Schadendorf | 127 | 1017 | 105777 |
William Wijns | 127 | 752 | 95517 |
Raimund Erbel | 125 | 1364 | 74179 |
Khalil Amine | 118 | 652 | 50111 |
Hans-Christoph Diener | 118 | 1025 | 91710 |
Bruce A.J. Ponder | 116 | 403 | 54796 |
Andre Franke | 115 | 682 | 55481 |