Results 51 to 60 of about 4,519,250 (293)

Basic Singular Spectrum Analysis and Forecasting with R

, 2013
Singular Spectrum Analysis (SSA) as a tool for analysis and forecasting of time series is considered. The main features of the Rssa package, which implements the SSA algorithms and methodology in R, are described and examples of its use are presented ...
Anderson, Anton Korobeynikov, Elsner, Ghil, Golub, Golyandina, Golyandina, Golyandina, Golyandina, Hassani, Jenkins, Keeling, Korobeynikov, Nina Golyandina, Roy, Usevich, Zeileis   +16 more
core   +1 more source

CMB anomalies and the effects of local features of the inflaton potential [PDF]

, 2017
Recent analysis of the WMAP and Planck data have shown the presence of a dip and a bump in the spectrum of primordial perturbations at the scales $k=0.002$ Mpc${}^{-1}$ and $k=0.0035$ Mpc${}^{-1}$ respectively. We analyze for the first time the effects a
Cadavid, Alexander Gallego, Gariazzo, Stefano, Romano, Antonio Enea   +2 more
core   +2 more sources

Can Spectral Power Be Used as a Candidate Seizure Marker of the Periodic Discharges Pattern?

Frontiers in Neurology, 2021
Introduction: It remains controversial whether the periodic discharges (PDs) pattern is an ictal or interictal phenomenon. The aims of the study are to apply time-frequency and power spectrum analysis to study the PDs pattern and prediction of seizures ...
Jianhua Chen, Xiangqin Zhou, Liri Jin, Qiang Lu, Heyang Sun, Qing Liu, Yan Huang   +6 more
doaj   +1 more source

Power spectrum analysis of staggered quadriphase-shift-keyed signals [PDF]

, 1975
Mathematical analysis of power spectrum of outputs from high-reliability communication system is used to determine system bandwidth. Analysis provides mathematical relationships of signal power spectrum at output of hard limiter for any type of baseband ...
Cartier, D. E., Mcwhorter, F. L.
core   +1 more source

Characterizing Signal Loss in the 21 cm Reionization Power Spectrum: A Revised Study of PAPER-64 [PDF]

, 2018
The Epoch of Reionization (EoR) is an uncharted era in our Universe's history during which the birth of the first stars and galaxies led to the ionization of neutral hydrogen in the intergalactic medium.
Aguirre, James E., Ali, Zaki S., Bernardi, Gianni, Bradley, Richard F., Carilli, Chris L., Cheng, Carina, DeBoer, David R., Dexter, Matthew R., Dillon, Joshua S., Jacobs, Daniel C., Klima, Pat, Kohn, Saul A., Kolopanis, Matthew, Liu, Adrian, MacMahon, David H. E., Moore, David F., Nunhokee, Chuneeta D., Parsons, Aaron R., Pober, Jonathan C., Walbrugh, William P., Walker, Andre   +20 more
core   +2 more sources

Infection Control Practices for Vascular Access Management in Hemodialysis: Results From a Nationwide Survey of Japanese National University Hospitals

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Bloodstream infections due to repeated vascular access (VA) puncture and circuit connections remain major concerns in hemodialysis. Therefore, we examined current practices for glove, disinfectant, and personal protective equipment (PPE) use according to VA type in national university hospitals in Japan.
Aiko Yamada, Makoto Harada, Tadahiko Kikugawa, Takeshi Nakata, Koji Hashimoto, Tsuneo Konta, Yuji Kamijo   +6 more
wiley   +1 more source

Familiarity Affects Entrainment of EEG in Music Listening

Frontiers in Human Neuroscience, 2017
Music perception involves complex brain functions. The relationship between music and brain such as cortical entrainment to periodic tune, periodic beat, and music have been well investigated.
Yuiko Kumagai, Mahnaz Arvaneh, Toshihisa Tanaka, Toshihisa Tanaka   +3 more
doaj   +1 more source

Primordial power spectrum: a complete analysis with the WMAP nine-year data

, 2013
We have improved further the error sensitive Richardson-Lucy deconvolution algorithm making it applicable directly on the un-binned measured angular power spectrum of Cosmic Microwave Background observations to reconstruct the form of the primordial ...
Hazra, Dhiraj Kumar, Shafieloo, Arman, Souradeep, Tarun   +2 more
core   +1 more source

Data-Adaptive Wavelets and Multi-Scale Singular Spectrum Analysis [PDF]

, 1998
Using multi-scale ideas from wavelet analysis, we extend singular-spectrum analysis (SSA) to the study of nonstationary time series of length $N$ whose intermittency can give rise to the divergence of their variance. SSA relies on the construction of the
Allen, Ando, Arneodo, Bessis, Blumenfeld, Broomhead, Chang, Chang, Coifman, Darby, Daubechies, Dee, Delprat, Derrida, Derrida, Dettinger, Didier Sornette, Farge, Fraedrich, Gabor, Ghil, Ghil, Ghil, Ghil, Ghil, Gibson, Gu, Jiang, Jin, Jin, Johansen, Jona-Lasinio, Jögi, Kagan, Keppenne, Knutson, Learned, Lilly, Mallat, Mallat, Michael Ghil, Miller, Moron, Nauenberg, Neelin, Neelin, Palus, Pascal Yiou, Peltier, Plaut, Rasmusson, Rhodes, Solis, Sornette, Sornette, Sornette, Sornette, Sornette, Thomson, Tziperman, Unal, Vautard, Vautard, Wang, Wright, Yiou   +65 more
core   +3 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source