Blind Source Separation techniques, based both on Independent Component Analysis and on second order statistics, are presented and compared for extracting partially hidden texts and textures in document images. Barely perceivable features may occur, for instance, in ancient documents previously erased and then re-written (palimpsests), or for transparency or seeping of ink from the reverse side...

application of appropriate agricultural operations is a strategy to reduce energy consumption and greenhouse gas emissions from agricultural productions process. in this study, fuel consumption and greenhouse gases emissions values for each farm operation was evaluated in gorgan and ali-abad katol to soybean product. all activities and production processes about operations were monitored and re...

Introduction: Chemical weapons , which their history dates back to the first world war , refer to any factor that has direct toxic effects on human being , animals and plants. Iraqi regime used chemical weapons and various poisons during the imposed war against Iran of which mustard and nervous gases are examples that their effects are seen in victims even after passing many years. Materials a...

A computer program was developed to predict the dispersion of gas pollutant in the atmosphere. This program relies on puff method, and in order to consider the wind shear effects, the program has the ability to consider the complete dynamic and unsteady atmospheric conditions. Plume rise of hot pollutants due to buoyancy effects was also considered. The program has the capacity to perform the r...

in internal combustion engines, only about a third of the total fuel input energy is converted into useful work. if the energy rejected into the cooling system and the exhaust gases could be recovered instead and put into useful work, fuel economy would have been substantially improved. the main aim of this research paper was to evaluate the effects of the hybrid nano-catalyst containing cerium...

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The modern nation state, with its system of social control has the power to relegate individual naught. One most important novelists twentieth century, Franz Kafka’s work went on be identified a mood that is infused grimness and bleakness, uncertainty an ensuing sense discomfort. This what birthed term “Kafkaesque”, it also used in real-life situations fraught unnerving environment. It easy gau...