Application-Specific Instruction-Set Processor for Retinex-Like Image and Video Processing

This brief presents an application-specific instruction-set processor (ASIP) for real-time Retinex image and video filtering. Design optimizations are addressed at algorithmic and architectural levels, the latter including a dedicated memory structure, an adapted pipeline, bypasses, a custom address generator and special looping structures. Synthesized in CMOS technology, the ASIP stands for its better energy-flexibility tradeoff versus reference ASIC and digital signal processing Retinex implementations.     

Comparison of the efficacy of oxidative processes and flocculation for the removal of colour from Eop effluent.

Up to 30% of the released colour arising from bleached kraft pulp and paper production comes from the alkaline extraction stage. This waste stream can therefore be readily targeted to remove colour at source in mills where improved colour management is required. The efficacy of five advanced oxidative treatment and physico-chemical technologies in removing colour from a typical Eop stage effluent was compared. The most effective oxidative treatment was peroxymonosulphate (79% colour removal in 15 minutes). Ozone and TAML treatments removed 74% and 58% of colour respectively within 30 minutes. In comparison, hydrogen peroxide alone was only able to remove 35% of the colour over 4 hours. Coagulation with polyaluminium chloride achieved 89% colour removal within 5 minutes. However, this treatment produced an undesirable sludge, and may cause toxicity in the treated wastewater. Overall, colour removal ability of the five technologies ranked from highest to lowest was polyaluminium chloride > peroxymonosulfate > ozone > TAML > hydrogen peroxide. Other factors, such as operating costs, feedstock modification and capital infrastructure, also need to be taken into account when selecting the most suitable colour management option.     

Probability method of controlling the consumption of safe life of agte parts by the limiting temperature criterion

A method is proposed for predicting the residual safe life of aircraft engine parts. It facilitates limiting temperature-based control of the depletion, during operation, of durability reserves set when designing these parts. The method is based on probability comparison of in-flight temperature maxima of the parts with limiting temperatures of their materials. The method of least squares is recommended for evaluating the parameters of distributions of in-flight temperature maxima and limiting temperatures that are described by extreme type laws. A series of integral relationships necessitating the use of numerical methods are obtained for the residual gamma-percent safe life of the parts.Translated from Problemy Prochnosti, No. 10, pp. 54–58, October, 1991.