We propose two metrics to demonstrate the impact integrating human-computer interaction (HCI) activities in software engineering (SE) processes. User experience metric (UXM) is a product metric that measures the subjective and ephemeral notion of the user’s experience with a product. Index of integration (IoI) is a process metric that measures how integrated the HCI activities were with the SE ...

The emergence of online communities has enabled firms to monitor consumer-generated online word-of-mouth (WOM) in realtime by mining publicly available information from the Internet. A prerequisite for harnessing this new ability is the development of appropriate WOM metrics and the identification of relationships between such metrics and consumer behavior. Along these lines this paper introduc...

We prove that, consistently with ZFC, no ultraproduct of countably infinite (or separable metric, non-compact) structures is isomorphic to a reduced product countable metric) associated the Fréchet filter. Since such are saturated, Continuum Hypothesis implies that they when elementarily equivalent.

In this paper, we prove some Banach fixed point theorems in generalized metric space where the contractive conditions are endowed with Hadamard product of real symmetric positive definite matrices. Since condition that a matrix A converges to zero is not needed, produces stronger results than those Perov. As an application our results, study existence and uniqueness solution for system equations.

A metric of non-negative sectional curvature on the direct product S2 × S2 of two two-spheres may be introduced as follows: take spheres (S2 i , gi), i = 1, 2 with rotationally symmetric metrics of non-negative curvature and consider the factor space of (S2, g1) × (S2, g2) × S1 by the action of the family of isometries Ĩτ (φ1, φ2) acting as the composition of a rotation of the first factor by a...

1. Abstract In practical engineering applications, there exist two different types of uncertainties: aleatory and epistemic uncertainties. Aleatory uncertainty is classified as objective and irreducible uncertainty with sufficient information on input uncertainty data, whereas epistemic uncertainty is a subjective and reducible uncertainty that stems from lack of knowledge on input uncertainty ...

We determine all Riemannian manifolds for which the tangent sphere bundles, equipped with the Sasaki metric, are local or global Riemannian product manifolds.