BACKGROUND The sequence of Q, R, and S peaks (QRS) complex detection is a crucial procedure in electrocardiogram (ECG) processing and analysis. We propose a novel approach for QRS complex detection based on the deterministic finite automata with the addition of some constraints. This paper confirms that regular grammar is useful for extracting QRS complexes and interpreting normalized ECG signa...

This paper discusses and contrasts different approaches to the construction of dynamic model> containing unobservables. It is argued that some analysis is easy IO cam out wing Dynamic Factor Analysis (DFA). a frequency domain technique, while other analysis is easier to carry clut in the context of a Dynamic Multiple Indicator-Multiple Cause Model (DYMIMIC), a time domain technique. An example ...

PURPOSE To compare economic aspects of equipment configurations, productivity levels, and patient waiting times in the performance of computed radiography (CR) and direct radiography (DR). MATERIALS AND METHODS The study received internal review board exemption status, without the need for informed patient consent. Data from four study sites were used to calculate the CR-DR crossover point (d...

The direct fluorescent antibody test (DFA), is performed in all rabies reference laboratories across Latin America and the Caribbean (LAC). Despite DFA being a critical capacity in the control of rabies, there is not a standardized protocol in the region. We describe the results of the first inter-laboratory proficiency exercise of national rabies laboratories in LAC countries as part of the re...

Human aging into senescence diminishes the capacity of the postural control system to adapt to the stressors of everyday life. Diminished adaptive capacity may be reflected by a loss of the fractal-like, multiscale complexity within the dynamics of standing postural sway (i.e., center-of-pressure, COP). We therefore studied the relationship between COP complexity and adaptive capacity in 22 old...

In addition to the indirect and direct costs presented, BRL 917 millions are spent annually with loss of income due to premature death (Table 5). The estimated total amount of potential life years lost was 33,898 years (from the average number of deaths over the years 2012, 2013 and 2014). The maximum age rate was used in a conservative way, to not overestimate the number of days lost due to pr...

The fluctuations in the quantum spectrum could be treated like a time series. In this framework, we explore the statistical self-similarity in the quantum spectrum using the detrended fluctuation analysis (DFA) and random matrix theory (RMT). We calculate the Hausdorff measure for the spectra of atoms and Gaussian ensembles and study their self-affine properties. We show that DFA is equivalent ...

First construct a table over all pairs of distinct states. That is, we do not consider pairs (p ∈ Q, p ∈ Q) since a state obviously cannot be distinguishable from itself. An easy way of doing this is to order the states (e.g. numerically or alphabetically), and then list all states except the last one in ascending order along the top line, and all states except the first one in descending order...

Stochastic fractal signals can be characterized by the Hurst coefficient H, which is related to the exponents of various power-law statistics characteristic of these processes. Two techniques widely used to estimate H are spectral analysis and detrended fluctuation analysis (DFA). This paper examines the analytical link between these two measures and shows that they are related through an integ...

The study was carried out to evaluate two rapid diagnostic rabies diagnostic tests in South Eastern Nigeria. One hundred samples each of saliva and brains were collected before and after slaughter from apparently healthy dogs brought for slaughter. The saliva was subjected to rapid immune chromatographic test while the brain tissues were subjected Direct Fluorescent Antibody Test (DFAT) and dir...