Zobrazeno 1 - 10
of 1 821
pro vyhledávání: '"A. Siebenhofer"'
In the quadratic minimum spanning tree problem (QMSTP) one wants to find the minimizer of a quadratic function over all possible spanning trees of a graph. We give two formulations of the QMSTP as mixed-integer semidefinite programs exploiting the al
Externí odkaz:
http://arxiv.org/abs/2410.04997
Convexification techniques have gained increasing interest over the past decades. In this work, we apply a recently developed convexification technique for fractional programs by He, Liu and Tawarmalani (2024) to the problem of determining the edge e
Externí odkaz:
http://arxiv.org/abs/2410.02526
Autor:
D. Jahn-Kuch, A. Domke, S. Bitsche, H. Stöger, A. Avian, K. Jeitler, N. Posch, A. Siebenhofer
Publikováno v:
BMC Palliative Care, Vol 19, Iss 1, Pp 1-9 (2020)
Abstract Background Austria has recently been embroiled in the complex debate on the legalization of measures to end life prematurely. Empirical data on end-of-life decisions made by Austrian physicians barely exists. This study is the first in Austr
Externí odkaz:
https://doaj.org/article/c940553e9f764fe6982fde65018f62d3
Computing the edge expansion of a graph is a famously hard combinatorial problem for which there have been many approximation studies. We present two variants of exact algorithms using semidefinite programming (SDP) to compute this constant for any g
Externí odkaz:
http://arxiv.org/abs/2403.04657
Autor:
Muna Paier-Abuzahra, Nicole Posch, Klaus Jeitler, Thomas Semlitsch, Christina Radl-Karimi, Ulrike Spary-Kainz, Karl Horvath, Andrea Siebenhofer
Publikováno v:
Human Resources for Health, Vol 22, Iss 1, Pp 1-14 (2024)
Abstract Background Task-shifting from primary care physicians (PCPs) to nurses is a means of overcoming PCP shortages and meeting the needs of patients receiving primary care. The aim of this overview of systematic reviews is to assess the effects o
Externí odkaz:
https://doaj.org/article/6b6158c6c868424dbb387cffbd9ab300
Autor:
Andrea Siebenhofer, Christine Loder, Alexander Avian, Elisabeth Platzer, Carolin Zipp, Astrid Mauric, Ulrike Spary-Kainz, Andrea Berghold, Alexander R. Rosenkranz
Publikováno v:
Frontiers in Medicine, Vol 11 (2024)
IntroductionThe global health burden of chronic kidney disease (CKD) results from both the disease itself and the numerous health problems associated with it. The aim of this study was to estimate the prevalence of previously undetected CKD in middle
Externí odkaz:
https://doaj.org/article/db1fbcbe12b74d9c843026bfb69658b1
Autor:
Fahrnberger, Florian, Siebenhofer, Matthäus, Hahn, Michael, Sauer, Markus, Foelske, Annette, Artner, Werner, Friedbacher, Gernot, Kubicek, Markus, Hutter, Herbert
Publikováno v:
In Applied Surface Science 1 March 2025 684
Autor:
Matthäus Siebenhofer, Andreas Nenning, Christoph Rameshan, Peter Blaha, Jürgen Fleig, Markus Kubicek
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-10 (2024)
Abstract Improving materials for energy conversion and storage devices is deeply connected with an optimization of their surfaces and surface modification is a promising strategy on the way to enhance modern energy technologies. This study shows that
Externí odkaz:
https://doaj.org/article/35142eb092814efd815c38615093a96c
Autor:
Gaar, Elisabeth, Siebenhofer, Melanie
The famous open Vizing conjecture claims that the domination number of the Cartesian product graph of two graphs $G$ and $H$ is at least the product of the domination numbers of $G$ and $H$. Recently Gaar, Krenn, Margulies and Wiegele used the graph
Externí odkaz:
http://arxiv.org/abs/2112.04007
Finding the stability number of a graph, i.e., the maximum number of vertices of which no two are adjacent, is a well known NP-hard combinatorial optimization problem. Since this problem has several applications in real life, there is need to find ef
Externí odkaz:
http://arxiv.org/abs/2108.05716