COVID-19 was declared pandemic with no apparent treatment of this virus in late 2019. It recommended to observe the social distance, quarantine infected patient, and follow good hygiene practices. Further, some strategies were adopted control spread COVID-19, including distancing, use face masks, forced lockdown, closure borders. Many developing countries like Pakistan are facing severe crises ...

Article history: Available online 3 April 2010

• Each table in the database has one column and stores the possible values for a ground fluent term. •Whenever there is complete knowledge about the term, the corresponding table has exactly one row. E.g., the ground fluent term door has only one possible value (Closed ) and so the table for door has exactly one row: Closed. •Whenever there is incomplete knowledge, the table has more than one r...

paper, we attempt to reconstruct the sitcalculus on a dense flow of time. The

having a full understanding of the world’s social-economic situation is the success key for industries automotive manufacturing industry is an extremely competitive one usually there is no clear guideline among automotive companies about technological causes behind their success and failure. this research provides an investigation about the world’s economic situation and the environmental situa...