Observer preferences in the color reproduction of pictorial images have been a topic of debate for many years. Through a series of psychophysical experiments we are trying to better understand the differences and trends in observer preferences for pictorial images, determine if cultural biases on preference exist, and finally generate a set of preferred color reproduced images for future experi...

This article is devoted to statistical modeling and analysis of electrocorticogram (ECoG) signals induced by painful cutaneous laser stimuli, which were recorded from implanted electrodes in awake humans. Specifically, with statistical tools of factor analysis and independent component analysis, the pain-induced laser-evoked potentials (LEPs) were extracted and investigated under different cont...

The importance of tools for the measurement of outcomes and needs in traumatic brain injury is well recognised. The development of tools for these injuries in indigenous communities has been limited despite the well-documented disparity of brain injury. The wairua theory of traumatic brain injury (TBI) in Māori proposes that a culturally defined injury occurs in tandem with the physical injury....

The gradual cumulative cultural evolution of locally adaptive technologies has played a crucial role in our species’ rapid expansion across the globe. Until recently, human artifacts were not obviously more complex than those made by organisms that lack cultural learning and have limited cognitive capacities. However, cultural evolution creates adaptive tools much more rapidly than genetic evol...

The gradual cumulative cultural evolution of locally adaptive technologies has played a crucial role in our species’ rapid expansion across the globe. Until recently, human artifacts were not obviously more complex than those made by organisms that lack cultural learning and have limited cognitive capacities. However, cultural evolution creates adaptive tools much more rapidly than genetic evol...

The distribution of color values in color images depends on the illumination which varies widely under real–world conditions. We present a new approach for color normalization which adjusts the statistical properties of the distribution to predefined values. We introduce two algorithms based on geometric manipulations of the color cluster. Our new color rotation algorithm is tested on some natu...

UNLABELLED AIM : The aim of this project was to conduct the cross-cultural factorial validation of the Outcome Questionnaire (OQ-45.2) using the Polish population. METHODS Data were obtained from day-patients (n = 211), inpatients (n = 234), outpatients (n = 137) and non-patients (n = 426). Statistical analyses included: parallel analysis, exploratory factor analysis, confirmatory factor anal...

OBJECTIVE To describe the process of cross-cultural adaptation and clinical validation of the Neonatal Skin Condition Score. METHODS This methodological cross-cultural adaptation study included five steps: initial translation, synthesis of the initial translation, back translation, review by an Committee of Specialists and testing of the pre-final version, and an observational cross-sectional...

Spacecraft autonomy is becoming an increasingly important technology. Yet the very nature of autonomy − on-board decision making and largely unattended operation − makes it important that such systems be thoroughly tested and validated. We are developing software visualization tools to assist in the validation process. The tools, which are designed to facilitate human problem solving, combine g...