Zobrazeno 1 - 10
of 9 459
pro vyhledávání: '"Hammar, A."'
Using individual-level data from Gallup World Poll and the Levada Center, we provide an in-depth analysis of how Russia's invasion of Ukraine has affected sentiments in the Russian population. Our results show that after the invasion, a larger share
Externí odkaz:
http://arxiv.org/abs/2410.00663
The CAGE-2 challenge is considered a standard benchmark to compare methods for autonomous cyber defense. Current state-of-the-art methods evaluated against this benchmark are based on model-free (offline) reinforcement learning, which does not provid
Externí odkaz:
http://arxiv.org/abs/2407.11070
Autor:
Hammar, Kim, Stadler, Rolf
We formulate intrusion tolerance for a system with service replicas as a two-level optimal control problem. On the local level node controllers perform intrusion recovery, and on the global level a system controller manages the replication factor. Th
Externí odkaz:
http://arxiv.org/abs/2404.01741
Asymmetric information stochastic games (AISGs) arise in many complex socio-technical systems, such as cyber-physical systems and IT infrastructures. Existing computational methods for AISGs are primarily offline and can not adapt to equilibrium devi
Externí odkaz:
http://arxiv.org/abs/2402.18781
We study automated security response for an IT infrastructure and formulate the interaction between an attacker and a defender as a partially observed, non-stationary game. We relax the standard assumption that the game model is correctly specified a
Externí odkaz:
http://arxiv.org/abs/2402.12499
Autor:
Memarian, Fereshteh L., Hammar, Derek, Sabbir, Md Mainul Hasan, Elias, Mark, Mitchell, Kevin A., Hirst, Linda
This work examines self-mixing in active nematics, a class of fluids in which mobile topological defects drive chaotic flows in a system comprised of biological filaments and molecular motors. We present experiments that demonstrate how geometrical c
Externí odkaz:
http://arxiv.org/abs/2401.04363
Autor:
T. Rettelbach, I. Nitze, I. Grünberg, J. Hammar, S. Schäffler, D. Hein, M. Gessner, T. Bucher, J. Brauchle, J. Hartmann, T. Sachs, J. Boike, G. Grosse
Publikováno v:
Earth System Science Data, Vol 16, Pp 5767-5798 (2024)
Permafrost landscapes in the Arctic are highly vulnerable to warming, with rapid changes underway. High-resolution remote sensing, especially aerial datasets, offers valuable insights into current permafrost characteristics and thaw dynamics. Here, w
Externí odkaz:
https://doaj.org/article/b5863cc5ef684088bf456bfaba365d70
Autor:
Åsa Hammar, Eivind Haga Ronold, Malene Alden Spurkeland, Rita Ueland, Ute Kessler, Ketil J. Oedegaard, Leif Oltedal
Publikováno v:
BMC Psychiatry, Vol 24, Iss 1, Pp 1-15 (2024)
Abstract Background How cognition is influenced by electroconvulsive treatment (ECT) and major depressive disorder (MDD) is still debated. The development and etiology of neurocognitive impairment in MDD were examined by investigating the cognitive p
Externí odkaz:
https://doaj.org/article/c651bd1f4bcd4da4b2862a15d1b06a8e
Autor:
Aimée Ekman, Sandra Pennbrant, Anders Sterner, Elenita Forsberg, Lena Hedén, Håkan Nunstedt, Annelie J. Sundler, Margaretha Larsson, Ingrid Larsson, Inger Ahlstrand, Hammar Isabelle Andersson, Qarin Lood, Jenny Hallgren
Publikováno v:
BMC Public Health, Vol 24, Iss 1, Pp 1-11 (2024)
Abstract Background It has been suggested that the university environment, to improve students’ health status and educational outcomes, should be based on a health promoting approach. More knowledge is needed about health promoting resources and li
Externí odkaz:
https://doaj.org/article/465a4bae8c16480c9ae08f57d2db771f
Autor:
Mozhu Ding, Katharina Schmidt-Mende, Juan-Jesus Carrero, Gunnar Engström, Niklas Hammar, Karin Modig
Publikováno v:
BMC Cardiovascular Disorders, Vol 24, Iss 1, Pp 1-8 (2024)
Abstract Background Uric acid closely relates to both kidney disease and atrial fibrillation (AF), yet the extent to which it influences the kidney-AF association remains uncertain. We examined the relationship between kidney function and risk of AF,
Externí odkaz:
https://doaj.org/article/4292ad680b7d4e788450af6eeecb22bd