Results 61 to 70 of about 5,699,484 (294)

Time Series Analysis [PDF]

We provide a concise overview of time series analysis in the time and frequency domains, with lots of references for further reading.time series analysis, time domain, frequency ...
Marc Nerlove, Francis X. Diebold, Lutz Kilian   +2 more
core   +2 more sources

Modulation-Based Feature Extraction for Robust Sleep Stage Classification Across Apnea-Based Cohorts

Biosensors
Automated sleep staging remains challenging due to the transitional nature of certain sleep stages, particularly N1. In this paper, we explore modulation spectrograms for automatic sleep staging to capture the transitional nature of sleep stages and ...
Unaza Tallal, Rupesh Agrawal, Shruti Kshirsagar   +2 more
doaj   +1 more source

Prognosis of Long‐Term Continuous Renal Replacement Therapy and the Impact of Combined Continuous Intravenous Sodium Infusion Therapy

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Patients requiring long‐term continuous renal replacement therapy (CRRT) generally have poor prognoses. This study evaluated whether adding continuous intravenous sodium infusion (cIVNa) is associated with improved hemodynamics and outcomes in patients undergoing long‐term CRRT for ≥ 7 days.
Akinori Yamaguchi, Atsuyoshi Mita, Kosuke Sonoda, Makoto Harada, Koji Hashimoto, Hiroshi Imamura, Yuji Kamijo   +6 more
wiley   +1 more source

Approximation of Time-Frequency Shift Equivariant Maps by Neural Networks

Mathematics
Based on finite-dimensional time-frequency analysis, we study the properties of time-frequency shift equivariant maps that are generally nonlinear. We first establish a one-to-one correspondence between Λ-equivariant maps and certain phase-homogeneous ...
Dae Gwan Lee
doaj   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source

Time-frequency statistical characteristics of cyclostationary signals

, 1998
Time-frequency statistical characteristics of cyclostationary signals are studied. The characteristics considered are real and complex instantaneous autospectra.
Vokurka, Karel
core  

Steering a time scale by the application of the theory of control [PDF]

, 2005
The goal of this paper is to investigate clock steering methods in the framework of control theory. The current steering techniques have been developed using different approaches.
L. GALLEANI, Galleani, Lorenzo, M. FARINA, TAVELLA, PATRIZIA, FARINA, MARCELLO, P. Tavella   +5 more
core  

VLBI Frequency Transfer using CONT11

, 2012
Geodetic VLBI is an independent technique, which does not rely on third parties. This makes it a viable future alternative for time- and frequency transfer over long baselines.
Haas, R\ufcdiger, Jarlemark, Per O. J., Jaldehag, R. T. Kenneth,, Haas, Rüdiger,, Rieck, Carsten, Jarlemark, Per O. J.,, Jaldehag, R. T. Kenneth, Rieck, Carsten,   +7 more
core   +1 more source

Organoids in pediatric cancer research

FEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

A Time–Frequency Domain Analysis Method for Variable Frequency Hopping Signal

Sensors
A variable frequency hopping (VFH) signal is a kind of frequency hopping (FH) signal that varies both in frequency and dwell time. However, in radio surveillance, the existing methods for unidentified signals using VFH cannot be effectively handled.
Zhengzhi Zeng, Chunshan Jiang, Yuanming Zhou, Tianwei Zhou   +3 more
doaj   +1 more source