conclusions the study results are indicative of the impact of electromagnetic fields on computer users’ health, and it is thus advisable to avoid leaving computers switched on unnecessarily in addition to observing the minimum distance of 60 cm from computer monitors to control the adverse effects of electromagnetic fields. materials and methods electric and magnetic field intensities were meas...

Studies evaluating public knowledge of the warning signs and risk factors associated with cancer have varied in the question format used. Those using a prompted (recognition) format have tended to find higher levels of knowledge than those using an unprompted, recall format. The aim of this study was to quantify the effect of prompting on knowledge of the seven warning signs of cancer, and risk...

Typically, users submit very simple search queries to digital document data collections. Often these queries can result in extremely broad answers or answers in which document relevance is hard to assess. Our group has developed a suite of tools which build sophisticated indexes to document collections. These tools can be used to provide cues to help users formulate more effective queries. In o...

in this paper, we propose a new full-fuzzy video ratecontrol algorithm (rca) for variable bit rate (vbr) videoapplications. the proposed rca provides high qualitycompressed video with a low degree computational complexity.by controlling the quantization parameter (qp) on a picturebasis, it produces vbr video bit streams. the proposed rcahas been implemented on the jm h.264/avc video codec andth...

Traffic accidents are the reason for 25% of unnatural deaths in Iran. The main objective of this study is to find a simple model for the estimation of economic costs especially in Islamic countries (like Iran) in a straightforward manner. The model can show the magnitude of traffic accident costs with monetary equivalent. Data were collected from different sources that included traffic police r...

This paper describes our research which empirically investigates the applicability of the goal-gradient hypothesis to the activation of user contributions on a popular German Question & Answer community through badges. The goal-gradient hypothesis states that the motivation to reach a goal increases with proximity to the goal. The issue – of interest to academics and website managers alike – is...

Using GPS technology in the collection of household travel data has been gaining importance as the technology matures. This paper documents recent developments in the field of GPS travel surveying and ways in which GPS has been incorporated into or even replaced traditional household travel survey methods. A new household activity survey is presented which uses automated data reduction methods ...