1. Abstract: The construction of facial composites by assembling individual facial features is common in criminal investigations. Arguably, the best known such method is E-FIT (electronic facial identication technique). However, although humans have excellent facial recognition ability, it is widely recognised that they often have great difficulty recalling facial characteristics in sufficient ...

The search for generation approaches to robust chaos has received considerable attention due to potential applications in cryptography or secure communications. This paper is of interest regarding a 1-D sigmoidal chaotic map, which has never been distinctly investigated. This paper introduces a generic form of the sigmoidal chaotic map with three terms, i.e., xn+1 = ∓Af NL(Bxn) ± Cxn ± D, where...

Hypertrophic cardiomyopathy (HCM) can be classified into at least four major anatomic subsets based upon the septal contour, and the location and extent of hypertrophy: reverse curvature-, sigmoidal-, apical-, and neutral contour-HCM. Here, we sought to identify genetic determinants for sigmoidal-HCM and hypothesized that Z-disc-HCM may be associated preferentially with a sigmoidal phenotype. U...

During the fusion of audio and video information for speech recognition, the estimation of the reliability of the noise affected audio channel is crucial to get meaningful recognition results. In this paper we compare two types of reliability measures. One is the use of the statistics of the phoneme a-posteriori probabilities and the other is the analysis of the audio signal itself. We implemen...

This paper presents a computationally efficient algorithm for function approximation with piecewise linear sigmoidal nodes. A one hidden layer network is constructed one node at a time using the well-known method of fitting the residual. The task of fitting an individual node is accomplished using a new algorithm that searches for the best fit by solving a sequence of quadratic programming prob...

The metabolism of a number of compounds by the cytochrome P-450 subfamily CYP3A does not exhibit classic Michaelis-Menten kinetics but displays a sigmoidal rate-substrate concentration relationship. Intrinsic clearance (CLint) cannot be calculated for these drugs due to the lack of a first order region in their kinetic profiles, and a suitable parameter has yet to be identified to allow such da...

The purpose of the study is to assess influence scaffold composition and properties on cellular proliferation mineralization a whey protein isolate (WPI) scaffold. Scaffolds varying concentrations WPI, calcium chloride, amylopectin are seeded with cells, growth curves constructed from cell density measurements following incubation. Non-linear regression yields kinetic parameters which compared ...

The half-maximal inhibitory concentration IC[Formula: see text] is an important pharmacodynamic index of drug effectiveness. To estimate this value, the dose response relationship needs to be established, which is generally achieved by fitting monotonic sigmoidal models. However, recent studies on Human Immunodeficiency Virus (HIV) mutants developing resistance to antiviral drugs show that the ...

This article proposes an animating system for plant growth in the Lindenmayer (L) system in which alphabets are parameterized to the length, size, and position of each component of the plant. The growth rate is approximated by sigmoidal curves. To achieve a realistic leaf shape, a set of shape functions is used to transform a skeleton of primary branches into the final shape. Genetic algorithm ...