Results 31 to 40 of about 91,392 (304)

A mixed sine cosine butterfly optimization algorithm for global optimization and its application

open access: yes, 2022
This paper proposes a hybrid sine cosine butterfly optimization algorithm (m-SCBOA), in which a modified butterfly optimization algorithm is combined with sine cosine algorithm to achieve superior exploratory and exploitative search capabilities.
Mirjalili, S   +9 more
core   +1 more source

Characterization of silicon pore optics for the NewAthena X-ray observatory in the PTB laboratory at BESSY II

open access: yesJournal of Synchrotron Radiation
The New Advanced Telescope for High ENergy Astrophysics (NewAthena) will be the largest space-based X-ray observatory ever built. It will have an effective area above 1.1 m2 at 1 keV, which corresponds to a polished mirror surface of about 300 m2 due to ...
M. Krumrey   +7 more
doaj   +1 more source

Dynamical Analysis of Two-Dimensional Memristor Cosine Map

open access: yesFrontiers in Physics, 2022
Research on discrete memristor models applied to discrete maps deserves more in-depth discussion. In this paper, a continuous memristor is introduced and the discrete memristor model is obtained by the forward Eulerian difference algorithmic ...
Xintong Han   +4 more
doaj   +1 more source

Status of the COSINE Experiment

open access: yes, 2017
The COSINE collaboration is preparing to test an annual modulation signal of the DAMA/LIBRA experiment unambiguously, with a 4$\times$2 array of low-background NaI(Tl) crystals at the Yangyang Underground Laboratory, South Korea.
COSINE Collaboration, Park, Jungsic
core   +1 more source

COSINE-100 and DAMA/LIBRA-phase2 in WIMP effective models [PDF]

open access: yes, 2019
Assuming a standard Maxwellian for the WIMP velocity distribution, we obtain the bounds from null WIMP search results of 59.5 days of COSINE-100 data on the DAMA/LIBRA-phase2 modulation effect within the context of the non-relativistic effective theory ...
Nam Young Kim   +108 more
core   +1 more source

The Discrete Cosine Transform on Triangles [PDF]

open access: yesICASSP 2019 - 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2019
The discrete cosine transform is a valuable tool in analysis of data on undirected rectangular grids, like images. In this paper it is shown how one can define an analogue of the discrete cosine transform on triangles. This is done by combining algebraic signal processing theory with a specific kind of multivariate Chebyshev polynomials.
Bastian Seifert, Knut Hüper
openaire   +2 more sources

Status of the COSINE-100 Experiment

open access: yes, 2018
Presently a number of experiments are operating to search for the WIMP, a dark matter candidate. Among these experiments, DAMA/LIBRA claims to observe an annually modulated WIMP signal, while other experiments, using different technologies and target ...
COSINE Collaboration, Kim, Kyungwon
core   +1 more source

Cosine-based classification—Error analysis.

open access: yes, 2019
Mosaic plot showing the error analysis of the categorization experiment performed using cosine as the distance metric to retrieve nearest neighbors. Blue cells indicate cases in which the observed frequencies significantly exceed the expected frequencies
Steven Gillis (5248271)   +3 more
core   +1 more source

A Remark on Cosine Families [PDF]

open access: yesProceedings of the American Mathematical Society, 1980
Let C ( t ) , t
openaire   +1 more source

Efficacy of Intermittent Theta‐Burst Stimulation for Prolonged Disorders of Consciousness: A Prospective, Randomized, Controlled Trial

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Emerging evidence suggests that low‐frequency neural oscillations are dynamically regulated by consciousness levels, with the recovery of low cortical activity potentially serving as a neurophysiological substrate for conscious emergence. Targeted enhancement of these low‐frequency rhythms in patients with disorders of consciousness
Chuan Xu   +10 more
wiley   +1 more source

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