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Improved signal detection algorithms for unevenly sampled data. Six signals in the radial velocity data for GJ876
(Montlhy Notices of The Royal Society Astronomy, 2014-04-04)
The hunt for Earth analogue planets orbiting Sun-like stars has forced the introduction of
novel methods to detect signals at, or below, the level of the intrinsic noise of the observations.
We present a new global ...
Clustering on dissimilarity representations for detecting mislabelled seismic signals at nevado del ruiz volcano
(UNIVERSIDAD NACIONAL DE COLOMBIA, 2007)
Classification of seismic signals at Colombian volcanoes has been carried out manually by visual inspection. In order to reduce the workload for the seismic analysts and to turn classification reliableand objective, the ...
Automatic detection of volcano-seismic events by modeling state and event duration in hidden Markov models
(Elsevier, 2016)
In this paper we propose an automatic volcano event detection system based on Hidden Markov Model (HMM) with state and event duration models. Since different volcanic events have different durations, therefore the state ...
Slow calcium signals after tetanic electrical stimulation in skeletal myotubes
(Biophysical Society, 2004-05)
The fluorescent calcium signal from rat myotubes in culture was monitored after field-stimulation with tetanic protocols. After the calcium signal sensitive to ryanodine and associated to the excitation-contraction coupling, ...
Mitochondria fine-tune the slow Ca2+ transients induced by electrical stimulation of skeletal myotubes
(Elsevier Ltd, 2010)
Mitochondria sense cytoplasmic Ca2+ signals in many cell types. In mammalian skeletal myotubes, depolarizing stimuli induce two independent cytoplasmic Ca2+ signals: a fast signal associated with contraction and a slow ...
What Do We Really Know About 5-HT1A Receptor Signaling in Neuronal Cells?
(Frontiers Media, 2016)
Serotonin (5-HT) is a neurotransmitter that plays an important role in neuronal plasticity. Variations in the levels of 5-HT at the synaptic cleft, expression or dysfunction of 5-HT receptors may alter brain development ...
Unsupervised blue whale call detection using multiple time-frequency features
(IEEE, 2017)
In the context of bio-acoustic sciences, call detection
is a critical task for understanding the behaviour of marine mammals
such as the blue whale species (Balaeonoptera musculus)
considered in this work. In this paper ...
A new statistical test based on the wavelet cross-spectrum to detect time–frequency dependence between non-stationary signals: Application to the analysis of cortico-muscular interactions
(Elsevier, 2011)
The study of the correlations that may exist between neurophysiological signals is at the heart of modern
techniques for data analysis in neuroscience. Wavelet coherence is a popular method to construct a time–
frequency ...
Improving signal-to-noise in the direct imaging of exoplanets and circumstellar disks with MLOCI
(EDP Sciences, 2015)
We present a new algorithm designed to improve the signal-to-noise ratio (S/N) of point and extended source detections around bright
stars in direct imaging data. One of our innovations is that we insert simulated point ...