In order to investigate the effect of concurrent phoning and auditory environmental monitoring, the performance of visually impaired people was observed on a dual task that consisted of two simulation tasks. Subjects wore either a bone conducting headset, or closed or open (air conduction) earphones. Reaction times and the correctness of responses…

X-ray fluorescence is a non-destructive technique that allows elemental composition analysis. In this paper we describe a prescription to obtain the elemental composition of homogeneous coins, like 50 cent Euro coins, and how to get the quantitative proportions of each element with the help of Monte Carlo simulation. Undergraduate students can…

This case study reports the effect of teachers completing and posting an Engagement Report on maintaining their use of a behavioral intervention designed to facilitate the engagement of a pre-school child with developmental delays. The Engagement Report recorded instances of child engagement during the day. Teachers posted the Report where the…

Nowhere in the current digital technology landscape is the process of "blurring the lines between media" more apparent than with the uses and applications of gaming practices and technologies. Here the overlaps between new media and media interfaces are becoming significant as games technologies and practices are becoming more pervasive as…

Common items with inconsistent b-parameter estimates may have a serious impact on item response theory (IRT)--based equating results. To find a better way to deal with the outlier common items with inconsistent b-parameters, the current study investigated the comparability of 10 variations of four IRT-based equating methods (i.e., concurrent…

At universities in the faculties of Engineering, Sciences, Business and Economics together with higher education in Computing, it is stated that because of the difficulty, calculators and computers can be used in Numerical Analysis (NA). In this study, the learning computer supported NA will be discussed together with important usage of the…

Four experiments investigated the conditions contributing to sensorimotor alignment effects (i.e., the advantage for spatial judgments from imagined perspectives aligned with the body). Through virtual reality technology, participants learned object locations around a room (learning room) and made spatial judgments from imagined perspectives…

We develop a two-dimensional flight simulator for lightweight (less than 10 g) indoor planes. The simulator consists of four coupled time differential equations describing the plane CG, plane pitch and motor. The equations are integrated numerically with appropriate parameters and initial conditions for two planes: (1) Science Olympiad and (2)…

Cell signaling pathways often contain feedback loops where proteins are produced that regulate signaling. While feedback regulatory mechanisms are commonly found in signaling pathways, there is no example available in the literature that is simple enough to be presented in an undergraduate control class. This paper presents a simulation study of…

A newly developed software application (Clover) is presented for constructing animated narrative vignette. The results have indicated that Clover is a viable tool for providing the process of self discovery, cognitions and identity by using animated narrative vignette simulations.

Higher-order approximations to the distributions of fit indexes for structural equation models under fixed alternative hypotheses are obtained in nonnormal samples as well as normal ones. The fit indexes include the normal-theory likelihood ratio chi-square statistic for a posited model, the corresponding statistic for the baseline model of…

Mokken scale analysis can be used for scaling under nonparametric item response theory models. The results may, however, not reflect the underlying dimensionality of data. Various features of Mokken scale analysis--the H coefficient, Mokken scale conditions, and algorithms--may explain this result. In this article, three new H-based objective…

In this article the author explores the construction of place within virtual worlds and, in particular, in video games that appeal widely to children and youths. With the notable exception of "edutainment" titles, gaming and education have traditionally been viewed as separate pursuits. Yet, after school, millions of children and teens spend…

Aiming at a better understanding of the problems associated with the depletion of the ozone layer, we propose several experiments to be performed by students of different levels: secondary and first-year undergraduate students. The oxidation of iodide induced by ultraviolet (UV) radiation, generated by a mercury lamp, is used as an indicator for…

Empirical research was reviewed to identify recommendations that game designers and developers could use to improve the pedagogical effectiveness of games for instruction. Findings from the research literature suggested 13 recommendations, which are discussed in this article. Distinctions between instructional games and instructional simulations…