further to emerging the environmental protection thoughts in the 1970's, most of the governments in the developed countries have been faced with social pressures for taking actions in order to stop the degradation in the environment and the quality of life. in response to such a societal desire, those governments have approved the requirement of environmental impact statement for the proje...

background: the aim of this paper was the comparison of ergonomic risk assessment results (final score and action levels) for the entire body as determined using quick exposure check (qec) and rapid entire body assessment (reba).  materials and methods: this was a cross-sectional study in which all 82 workers engaged in various processes with different activities in an anodizing and aluminum pr...

background: the use of chemicals is essential in education resulting in exposure to these pollutant in a variety of chemical and research laboratories. chemical contaminants in chemical laboratories are in different forms and chemical exposure risk assessment is important for choosing appropriate controls in protecting the health of operators, experts and students. for risk assessment in chemic...

The strong interest in knowledge-level description of expert systems has led to various efforts defining and cataloguing AI problem solving methods and building methodologies and tools to use them. In thus paper we address the issue of matching problem solving methods to tasks. ‘This includes 1. deciding whether a method is applicable to the problem at hand, .Z. :if it is applicable, assessing ...

Quantitative measures of image quality and reliability are critical for both qualitative interpretation and quantitative analysis of medical images. While, in theory, it is possible to analyze reconstructed images by means of Monte Carlo simulations using a large number of noise realizations, the associated computational burden makes this approach impractical. Additionally, this approach is les...

Ultrasound has been proposed as a means to noninvasively assess bone and, particularly, bone strength and fracture risk. Although there has been some success in this application, there is still much that is unknown regarding the propagation of ultrasound through bone. Because strength and fracture risk are a function of both bone mineral density and architectural structure, this study was carri...