omid ghadirian - Academia.edu (original) (raw)
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Centre National de la Recherche Scientifique / French National Centre for Scientific Research
Centre National de la Recherche Scientifique / French National Centre for Scientific Research
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Papers by omid ghadirian
SN Applied Sciences
Noise is a spatially extensive pollutant with recognized impacts on habitats and wildlife species... more Noise is a spatially extensive pollutant with recognized impacts on habitats and wildlife species. Expansion of roads into protected areas and wild places is contemplated as a major source of noise pollution whose measurement can shed light on the impacts of road traffic noise pollution on habitats and species. In this research, the SPreAD-GIS was employed to model road traffic noise propagation in Mouteh Wildlife Refuge, central Iran, independently for cold (winter and autumn) and warm (summer and spring) seasons. The MaxEnt model was also used to characterize the potential suitability of habitat for Persian gazelle. Finally, the noise-affected habitats were identified using the overlay method. According to the results, 53,461 ha of the wildlife refuge was characterized as highly suitable habitats, of which noise-affected areas accounted for 1522 ha (283 ha with a high noise level) during the cold seasons and 1159.8 ha (246 ha with a high noise level) during the warm seasons of the year. Field surveys showed that most populations responded to noise pollution by preserving distance from high-level noise (40 dB <) regions, indicating that high-level noise-affected habitats of Persian gazelle have been functionally lost. This study indicated that the identification of the affected habitats and populations through modeling can be an appropriate and cost-effective means to determine the primary species response to traffic noise and minimize its adverse impacts for sustainably managing wildlife populations.
As the " artificial pancreas " becomes closer to reality, automated insulin delivery based on rea... more As the " artificial pancreas " becomes closer to reality, automated insulin delivery based on real-time glucose measurements becomes feasible for people with diabetes. This paper employs a new approach to regulate the blood glucose level of type I diabetic patient under an intensive insulin treatment. The closed-loop control scheme incorporates the design of robust H∞ controller to maintain the normoglycemic average of 80 mg/dl. Due to cost and complexity involved in testing the control algorithms to real patients, studies are done using a Type I diabetic patient model. Controller performance is assessed in terms of its ability to reject the effect of meal disturbance and to overcome the variability in the glucose-insulin dynamics from patient to patient. Computer simulations are used to evaluate the effectiveness of the proposed technique and to show its superiority in controlling hyperglycemia over other existing algorithms.
SN Applied Sciences
Noise is a spatially extensive pollutant with recognized impacts on habitats and wildlife species... more Noise is a spatially extensive pollutant with recognized impacts on habitats and wildlife species. Expansion of roads into protected areas and wild places is contemplated as a major source of noise pollution whose measurement can shed light on the impacts of road traffic noise pollution on habitats and species. In this research, the SPreAD-GIS was employed to model road traffic noise propagation in Mouteh Wildlife Refuge, central Iran, independently for cold (winter and autumn) and warm (summer and spring) seasons. The MaxEnt model was also used to characterize the potential suitability of habitat for Persian gazelle. Finally, the noise-affected habitats were identified using the overlay method. According to the results, 53,461 ha of the wildlife refuge was characterized as highly suitable habitats, of which noise-affected areas accounted for 1522 ha (283 ha with a high noise level) during the cold seasons and 1159.8 ha (246 ha with a high noise level) during the warm seasons of the year. Field surveys showed that most populations responded to noise pollution by preserving distance from high-level noise (40 dB <) regions, indicating that high-level noise-affected habitats of Persian gazelle have been functionally lost. This study indicated that the identification of the affected habitats and populations through modeling can be an appropriate and cost-effective means to determine the primary species response to traffic noise and minimize its adverse impacts for sustainably managing wildlife populations.
As the " artificial pancreas " becomes closer to reality, automated insulin delivery based on rea... more As the " artificial pancreas " becomes closer to reality, automated insulin delivery based on real-time glucose measurements becomes feasible for people with diabetes. This paper employs a new approach to regulate the blood glucose level of type I diabetic patient under an intensive insulin treatment. The closed-loop control scheme incorporates the design of robust H∞ controller to maintain the normoglycemic average of 80 mg/dl. Due to cost and complexity involved in testing the control algorithms to real patients, studies are done using a Type I diabetic patient model. Controller performance is assessed in terms of its ability to reject the effect of meal disturbance and to overcome the variability in the glucose-insulin dynamics from patient to patient. Computer simulations are used to evaluate the effectiveness of the proposed technique and to show its superiority in controlling hyperglycemia over other existing algorithms.