wartime employment opportunities for some blind persons or members of their families with marginal employability ended with the war. As a result, many blind persons turned to public assistance for their maintenance. Other factors have undoubtedly contributed to the increase in the number of persons receiving aid to the blind. Among these is the increase in the total population, particularly the...

RESEARCH ARTICLE Hardware and Software Co-Design of Arabic Alphabets Recognition Platform for Blind and Visually Impaired Persons Brahim Sabir, Yassine Khazri, Mohamed Moussetad and Bouzekri Touri LIMAT Lab, Physics Department, Faculty of Science Ben M'Sik Physics Casablanca, Casablanca, Morocco LAPSTICE Lab, Language and Communication Department, Faculty of Science Ben M'Sik Physics Casablanca...

objectives: the present study has been conducted to determine the effectiveness of cognitivebehavioral group-therapy on the development of visually impaired adolescents' self-concept. methods: this study is a semi-experimental pre-test and post-test model. the study population consisted of visually impaired male students of the primary and secondary high school at the omid-e-mashhad educational...

Seismic signals are a convolution of a source wavelet and the response at each earth layer boundary. Despite attempts to record the outgoing source wavelet at the surface, often little is known of the source wavelet at depth, and there is no a priori knowledge of the earth response or the noise. Current practice makes the basic assumptions that the source wavelet is known, and the noise can be ...

We compare the seller’s expected revenue in a second price sealed bid auction for a single object in which bidders receive multidimensional signals. Bidders’ valuations for the object depend on their signals and a signal observed privately by the seller. We show in various examples that the seller can be better off not revealing publicly his signal. Hence the linkage principle does not necessar...

We explore the identifiability conditions for blind and semi-blind multiuser multichannel identification. Starting with the deterministic approach, we compare the identifiability conditions on the channel and the sources of training sequence based channel identification, blind and semi-blind channel identification. Further on, we use the stochastic approach with Gaussian priors for the source s...