On the optimality of a new class of 2D recursive filters

summary:The purpose of this paper is to prove the minimum variance property of a new class of 2D, recursive, finite-dimensional filters. The filtering algorithms are derived from general basic assumptions underlying the stochastic modelling of an image as a 2D gaussian random field. An appealing feature of the proposed algorithms is that the image pixels are estimated one at a time; this makes it possible to save computation time and memory requirement with respect to the filtering procedures based on strip processing. Experimental results show the effectiveness of the new filtering schemes

The effect of mixture lenghts of vehicles on the traffic flow behavior in one- dimensional cellular automaton

The effect of mixture lengths of vehicles on the asymmetric exclusion model is studied using numerical simulations for both open and periodic boundaries in parallel dynamics. The vehicles are filed from their length, the small cars Type 1 occupy one cell whereas the big ones Type 2 takes two. In the case of open boundaries two varieties of models are presented. The former model corresponds to a chain with two entries where densities are calculated as a function of the injecting rates α1 and α2 of vehicles type 1 and type 2 respectively, and the phase diagram (α1 , α2 ) is presented for a fixed value of the extracting rate β. In this case the first order transition from low to high density phases occurs at α1 +α2 =β and disappears for α2 >β. The latter model correspond to a chain with one entry, where α is the injecting rate of vehicles independently of their nature. Type1 and type2 are injected with α1 and α2 respectively, where α2 =nα, n is the concentration of type2 and α2 ≤α1 ≤α. Densities are calculated as a function of the injecting rates α, and the phase diagrams (α,β) are established for different values of n. In this case the gap which is a characteristic of the first order transition vanishes with increasing α for n ≠ 0.However, the first order transition between high and low densities exhibit an end point above which the global density undergoes a continuous passage. The end point coordinate depends strongly on the value of n. In the periodic boundaries case, the presence of vehicles type2 in the chain leads to a modification in the fundamental phase diagram (current, density). Indeed, the maximal current value decreases with increasing the concentration of vehicles type 2, and occurs at higher values of the global density in contrast with what was found by Schadschneider et al. [20].The effect of mixture lengths of vehicles on the asymmetric exclusion model is studied using numerical simulations for both open and periodic boundaries in parallel dynamics. The vehicles are filed from their length, the small cars Type 1 occupy one cell whereas the big ones Type 2 takes two. In the case of open boundaries two varieties of models are presented. The former model corresponds to a chain with two entries where densities are calculated as a function of the injecting rates α1 and α2 of vehicles type 1 and type 2 respectively, and the phase diagram (α1 , α2 ) is presented for a fixed value of the extracting rate β. In this case the first order transition from low to high density phases occurs at α1 +α2 =β and disappears for α2 >β. The latter model correspond to a chain with one entry, where α is the injecting rate of vehicles independently of their nature. Type1 and type2 are injected with α1 and α2 respectively, where α2 =nα, n is the concentration of type2 and α2 ≤α1 ≤α. Densities are calculated as a function of the injecting rates α, and the phase diagrams (α,β) are established for different values of n. In this case the gap which is a characteristic of the first order transition vanishes with increasing α for n ≠ 0.However, the first order transition between high and low densities exhibit an end point above which the global density undergoes a continuous passage. The end point coordinate depends strongly on the value of n. In the periodic boundaries case, the presence of vehicles type2 in the chain leads to a modification in the fundamental phase diagram (current, density). Indeed, the maximal current value decreases with increasing the concentration of vehicles type 2, and occurs at higher values of the global density in contrast with what was found by Schadschneider et al. [20]

A CASE REPORT ON ALLOPURINOL INDUCED DRESS SYNDROME

Allopurinol-induced DRESS Syndrome or Drug Rash with Eosinophilia and Systemic Symptom is a rare but potentially fatal drug reaction. Fever, rashes, swelling, and hematologic abnormalities, particularly short-term or long-term injury to one or more organs, have been reported by over 0.4 percent of patients following the course of medicine. Here, a 54-year-old female patient was admitted to the hospital with complaints of fever, purpuric rashes over the body with itching mainly in the oral cavity and lips, and the extent to the upper back and lower limbs for three days. She had known complaints of Type 2 Diabetes, Systemic hypertension, Coronary artery disease with recent NSTEMI, Dyslipidaemia, Psychosis (20y), and Chronic kidney disease. She had been taking Allopurinol for the past three months for hyperuricemia. Allopurinol treatment stopped while topical Steroid treatment started along with supportive therapy. After ten days, the rashes improved significantly, allowing her to leave the hospital

Fuzzy Mobile-Robot Positioning in Intelligent Spaces Using Wireless Sensor Networks

This work presents the development and experimental evaluation of a method based on fuzzy logic to locate mobile robots in an Intelligent Space using Wireless Sensor Networks (WSNs). The problem consists of locating a mobile node using only inter-node range measurements, which are estimated by radio frequency signal strength attenuation. The sensor model of these measurements is very noisy and unreliable. The proposed method makes use of fuzzy logic for modeling and dealing with such uncertain information. Besides, the proposed approach is compared with a probabilistic technique showing that the fuzzy approach is able to handle highly uncertain situations that are difficult to manage by well-known localization methods

Neptune\u27s Trident Becomes America\u27s Scepter: The Story of the Rise of the American Navy

Senior Project submitted to The Division of Social Studies of Bard College