objectives: the purpose of the present study is to investigate the oral narrative skills of late talkers mostly caused by mental disorders while they try to comprehend a wordless sequential picture story to create and narrate the relevant story. methods: to this end, 15 (10 male and 5 female) participants were who were the students of a specialized school for physically and mentally retarded st...

In the present paper, synchronous, tabled chain code picture systems based on Lindenmayer systems (sT0L systems) are studied with respect to the finiteness of their picture languages. The finiteness is proved to be decidable. Additionally, a method is given for deciding whether an sT0L system generates a finite picture language or not.

Coronavirus disease 2019 (COVID-19) is currently threatening the entire world, and a novel coronavirus virus from corona family that has spread new infection. The number of instances this increasing at an exponential, but there are now commercially accessible COVID-19 vaccines. weak symptoms disease, on other hand, treated with variety antiviral treatments. It still choosing optimal medicine to...