Description: This article accompanies a poster presentation on the derivation of the evolution of empathic other-regarding social emotions as compared to non-social self-regarding emotions. The present study derives the evolution of social emotions by inclusion of other-regarding concerns from the non-social emotions of self-regarding concerns. Emotional processing is a self-discovered error-correction feedback process in which computations are involved to assess the accuracy of the internal brain-generated predictions with respect to the reality, in order to increase its probability of an organism's own survival.

Description: This article discusses the development of Abraham model correlations for solvation characteristics of secondary and branched alcohols. Abstract: Data have been compiled from the published literature on the partition coefficients of solutes and vapors into the anhydrous secondary and branched alcohols (2-propanol, 2-butanol, 2-methyl-1-propanol, 2-methyl-2-propanol and 3-methyl-1-butanol) from both water and from the gas phase. The logarithms of the water-to-alcohol partition coefficents (log P) and gas-to-alcohol partition coefficients (log K) were correlated with the Abraham solvation parameter model. The derived correlations described the observed log P and log K values to within average standard deviations of 0.14 and 0.13 log units, respectively. The predictive abilities of the each correlation were assessed by dividing databases into a separate training set and test set.

Description: This article discusses the discourse variations between usability tests and usability reports. Abstract: While usability evaluation and usability testing has become an important tool in artifact assessment, little is known about what happens to usability data as it moves from usability session to usability report. In this ethnographic case study, the author investigates the variations in the language used by usability participants in user-based usability testing sessions as compared to the language used by novice usability testers in their oral reports of that usability testing session. In these comparative discourse analyses, the author assesses the consistency and continuity of the usability testing data within the purview of the individual testers conducting "do-it-yourself" usability testing. This case study of a limited population suggests that findings in oral usability reports may or may not be substantiated in the evaluations themselves, that explicit or latent biases may affect the presentation of the findings in the report, and that broader investigations, both in terms of populations and methodologies, are warranted.

Description: This presentation is part of the faculty lecture series UNT Speaks Out on Unauthorized Immigration. This presentation discusses illegal immigration and the challenges for undocumented Latino/a students.

Description: This article discusses dynamics of electroencephalogram entropy and pitfalls of scaling detection. Abstract: In recent studies a number of research groups have determined that human electroencephalograms (EEG) have scaling properties. In particular, a crossover between two regions with different scaling exponents has been reported. Herein the authors study the time evolution of diffusion entropy to elucidate the scaling of EGG time series. For a cohort of 20 awake healthy volunteers with closed eyes, the authors find that the diffusion entropy of EEG increments (obtained from EEG waveforms by differencing) exhibits three features: short-time growth, an alpha wave related oscillation whose amplitude gradually decays in time, and asymptotic saturation which is achieved after approximately 1 s. This analysis suggests a linear, stochastic Ornstein-Uhlenbeck Langevin equation with a quasiperiodic forcing (whose frequency and/or amplitude may vary in time) as the model for the underlying dynamics. This model captures the salient properties of EEG dynamics. In particular, both the experimental and simulated EEG time series exhibit short-time scaling which is broken by a strong periodic component, such as alpha waves. The saturation of EEG diffusion entropy precludes the existence of asymptotic scaling. We find that the crossover between two scaling regions seen in ...