Visually induced motion sickness (VIMS) is caused by sensory conflict, the disagreement between vergence and visual accommodation while observing stereoscopic images. VIMS can be measured by psychological and physiological methods. We quantitatively measured the head acceleration and body sway before and during exposure to a conventional 3D movie. The subjects wore a head mount display and main...

background:  the purpose of this study was to report the preoperative complaints and postoperative outcome of patients after removal of the radial head prosthesis.   methods:  this is a retrospective review of 14 adult patients (6 females and 8 males) from 2007 to 2011, who underwent radial head prosthesis removal by three surgeons. the average time between implantation and removal was 23 month...

J. Econ. Entomol. 78: 913-916 (1985) ABSTRACT Within-plant sampling procedures, coupled with action thresholds for cabbage-feeding caterpillars, were evaluated for accuracy and efficiency in New York,Ontario, Canada, and Wisconsin in 1982. When results were averaged over the three sites, use of all thresholds required fewer insecticide applications than a fortnightly schedule, while the total p...

BACKGROUND Numerous Caribbean countries are considering implementing National Health Insurance (NHI) and pooling resources to finance their health sectors. Based on this increased interest in health insurance, we investigated the willingness to participate and to pay for NHI in St. Vincent and the Grenadines, an upper-middle-income Caribbean country. METHODS Four hundred heads of household in...

When an experiment is conducted, such as tossing coins, rolling a die, sampling for estimating the proportion of defective units, several outcomes or events occur with certain probabilities. These events or outcomes may be regarded as a variable which takes different values and each value is associated with a probability. The values of this variable depends on chance or probability. Such a vari...

Background: Respondent-driven sampling(RDS) is an increasingly widely used variant of a link tracing design for recruiting hidden populations. The role of the spatial distribution of the target population has not been robustly examined for RDS. We examine patterns of recruitment by location, and how they may have biased an RDS study findings. Methods: Total-population data were available on a r...

OBJECTIVE To explore the effect of the educational level of the head of household on the prevalence of malnutrition in Saudi children. METHODS The study was conducted over 2 years in 2004 and 2005 in all regions of the Kingdom of Saudi Arabia (KSA). The design consisted of a stratified multistage probability random sampling of the population of the KSA. The educational level of the heads of t...

In this paper we describe a new method for automatically estimating where a person is looking in images where the head is typically in the range 20 to 40 pixels high. We use a feature vector based on skin detection to estimate the orientation of the head, which is discretised into 8 different orientations, relative to the camera. A fast sampling method returns a distribution over previously-see...

Head-related transfer functions (HRTFs) were acoustically measured and numerically simulated for the FABIAN head and torso simulator on a full-spherical and high resolution sampling grid. Moreover, HRTFs were acquired for 11 horizontal head-above-torso orientations, covering the typical range of motion of ±50 , making it possible to account for head movements of the listeners in dynamic binaura...

Current study aims at investigating the comparison of online performance appraisal system in relation with Traditional paper and pencil based performance appraisal system on employees’ work outcome and behavior. In this way, the contemporary study will focus on major areas of online performance appraisal system and paper and pencil based performance appraisal system. The universe selected for t...