In this paper, the mobile outdoor gaming system ARQuake is discussed from an implementation point of view. The modifications to the original source code from Id Software are described, with a focus on the changes made for tracking devices, video overlays, firing weapons, and tweaks to the game to improve its visual quality. The game runs under GNU/Linux on a standard laptop mounted to a custom ...

The 3-D information collected from sample plots is significant for forest inventories. Terrestrial laser scanning (TLS) has been demonstrated to be an effective device in data acquisition of plots. Although TLS able achieve precise measurements, multiple scans are usually necessary collect more detailed data, which generally requires time scan preparation and field acquisition. In contrast, mob...

Background A frequent question from parents of adolescents is whether there are risk factors that could make a scoliosis curve increase, specifically whether carrying a heavy backpack on one shoulder could be detrimental to an existed curve. There has been very little research published to answer whether a unilateral upper extremity load would have an effect on spine position, let alone scolios...

The objective of this study was to examine the main and interactive effects of cognitive and physical loads on soldiers' gait characteristics. Twelve young healthy male participants volunteered to take part in the study. They were instructed to walk on the treadmill at their comfortable speed under different combinations of physical and cognitive loads. The physical load was applied by carrying...

The distinction between near space and the space farther away has been well established, as has the relation of this distinction to arm length. Recent studies provide evidence for the plasticity of near space, showing that it is possible to expand its extent ("size") through tool-use. In the present study, we examine the converse effect, whether contraction of near space results from increasing...