After habituation of looking at an object that repeatedly approached and receded through 50 cm along the medial axis, infants of about 18 weeks of age were presented with both the same moving object and one of a different size falling within the same range of visual angles as those projected during habituation. The starting point for movement varied widely from trial to trial to "desensitize" s...

objectives: falling is a common problem among the elderly. falling indoors and outdoors is highly prevalent among the iranian elderly. therefore, identification of the contributing factors at home and their modification can reduce falls and subsequent injuries inthe elderly. the goal of this study was to identify the elderly at risk of fall, using the ‘home falls and accident screening tool’ (h...

Background: The water splash patterns strongly depend on the surface conditions of the solid object. The present paper discusses the influence of the surface conditions of the solids falling into the water on the formation of the splashes, employing the experimental method with the high speed video camera and the numerical approach by the particle method. Methods: We propose two engineering mod...

objectives: balance disorder is one of the most common problems after stroke causes falling and fear of falling in some patients. the balance based video games are newly used in people with motor problems. it is very important to use different interventions for balance issues. the aim of this study is to determine the effectiveness of videogame on balance and fear of falling in one participant....

The interference method for determining the speed of objects using direct optical heterodyning (PDV-Photonic Doppler Velocimetry) has become widespread due to simplicity setting up fiber-optic system, unambiguousness results, and wide possibilities varying measurement accuracy temporal resolution. can be fractions a percent, but there are number factors that prevent this. For example, change in...

The robustness and accuracy of a vision system for motion estimation of a tumbling target satellite are enhanced by an adaptive Kalman filter. This allows a vision-guided robot to complete the grasping of the target even if occlusion occurs during the operation. A complete dynamics model, including aspects of orbital mechanics, is incorporated for accurate estimation. Based on this model, an ad...

Humans adjust digit forces to compensate for trial-to-trial variability in digit placement during object manipulation, but the underlying control mechanisms remain to be determined. We hypothesized that such digit position/force coordination was achieved by both visually guided feed-forward planning and haptic-based feedback control. The question arises about the time course of the interaction ...

Background: Fear of falling is common amongst older adults, especially those who live in nursing homes. This study aimed to determinate factors associated with fear of falling and functional independence in older adults living in nursing homes. Methods: This was a cross-sectional study using a convenience sampling method to enroll 200 older adults living in nursing homes from 25 senior cente...

background: in this study we investigated the differences of functional gait and balance measures between patients with chronic stroke with different level of concern about falling. methods: fifty-four patients with chronic stroke participated in this observational, cross-sectional study. the level of concern relating to falls was assessed by using the falls efficacy scale-international. thirty...