Results 31 to 40 of about 9,778,055 (369)

Rare desynchronization events in power grids: on data implementation and dimensional reductions

Journal of Physics: Complexity, 2022
We discuss the frequency of desynchronization events in power grids for realistic data input. We focus on the role of time correlations in the fluctuating power production and propose a new method for implementing colored noise that reproduces non ...
Tim Ritmeester, Hildegard Meyer-Ortmanns
doaj   +1 more source

Dimension and dimensional reduction in quantum gravity [PDF]

Universe, 2017
A number of very different approaches to quantum gravity contain a common thread, a hint that spacetime at very short distances becomes effectively two dimensional. I review this evidence, starting with a discussion of the physical meaning of ‘dimension’
S. Carlip
semanticscholar   +1 more source

Emergence of time persistence in a data-driven neural network model

eLife, 2023
Establishing accurate as well as interpretable models of network activity is an open challenge in systems neuroscience. Here, we infer an energy-based model of the anterior rhombencephalic turning region (ARTR), a circuit that controls zebrafish swimming
Sebastien Wolf, Guillaume Le Goc, Georges Debrégeas, Simona Cocco, Rémi Monasson   +4 more
doaj   +1 more source

Investigation of Metastable Low Dimensional Halometallates

Molecules, 2022
The solvothermal synthesis, structure determination and optical characterization of five new metastable halometallate compounds, [1,10-phenH][Pb3.5I8] (1), [1,10-phenH2][Pb5I12]·(H2O) (2), [1,10-phen][Pb2I4] (3), [1,10-phen]2[Pb5Br10] (4) and [1,10-phenH]
Navindra Keerthisinghe, Matthew S. Christian, Anna A. Berseneva, Gregory Morrison, Vladislav V. Klepov, Mark D. Smith, Hans-Conrad zur Loye   +6 more
doaj   +1 more source

SAELGMDA: Identifying human microbe–disease associations based on sparse autoencoder and LightGBM

Frontiers in Microbiology, 2023
IntroductionIdentification of complex associations between diseases and microbes is important to understand the pathogenesis of diseases and design therapeutic strategies.
Feixiang Wang, Huandong Yang, Yan Wu, Lihong Peng, Xiaoling Li, Xiaoling Li   +5 more
doaj   +1 more source

Gauged supergravity from dimensional reduction [PDF]

, 1997
We perform a generalised Scherk-Schwarz reduction of the effective action of the heterotic string on T6 to obtain a massive N = 4 supergravity theory in four dimensions.
Behrndt, Bergshoeff, Bergshoeff, Chamseddine, Cowdall, Cremmer, Cremmer, de Roo, de Roo, Dudas, E. Bergshoeff, E. Eyras, M. de Roo, Maharana, Maharana, Porrati, Romans, Scherk, Scherk, Shah, Thomas, Townsend, Wagemans, Wagemans   +23 more
core   +3 more sources

Spontaneous dimensional reduction in quantum gravity [PDF]

, 2016
Hints from a number of different approaches to quantum gravity point to a phenomenon of “spontaneous dimensional reduction” to two spacetime dimensions near the Planck scale.
S. Carlip
semanticscholar   +1 more source

Restoration of dimensional reduction in the random-field Ising model at five dimensions. [PDF]

Physical Review E, 2016
The random-field Ising model is one of the few disordered systems where the perturbative renormalization group can be carried out to all orders of perturbation theory.
N. Fytas, V. Martín-Mayor, M. Picco, N. Sourlas   +3 more
semanticscholar   +1 more source

Deep Feature Selection for Anomaly Detection Based on Pretrained Network and Gaussian Discriminative Analysis

IEEE Open Journal of Instrumentation and Measurement, 2022
Deep learning neural network serves as a powerful tool for visual anomaly detection (AD) and fault diagnosis, attributed to its strong abstractive interpretation ability in the representation domain.
Jie Lin, Song Chen, Enping Lin, Yu Yang
doaj   +1 more source

Compressing Fisher Vector for Robust Face Recognition

IEEE Access, 2017
One major topic for robust face recognition could be the efficient encoding of facial descriptors. Among various encoders, Fisher vector (FV) is one of the probabilistic methods that yield promising results.
Hongjun Wang, Jiani Hu, Weihong Deng
doaj   +1 more source