background: although lebanon is a highly polluted country, so far no study has specifically been designed to assess the association between outdoor air pollution and chronic bronchitis in this country. objective: to assess the association between exposure to outdoor air pollution and chronic bronchitis in lebanon. methods: a pilot case-control study was conducted in two tertiary care hospitals....

The problem of inverse design is rooted to the classical scattering. In general, these highly nonlinear and often ill-posed problems are solved via extensive optimization techniques. this paper, we suggest an optimization-free method for a one-dimensional medium with spatially inhomogeneous dielectric constant $?(z)$. addition, derive governing equation analog problem---a time-dependent homogen...