Correspondence To the Editor: Frederick Goodwin, an influential figure in bipolar mood disorder, famously said, if you can't, or you won't use lithium, get out from the business of treating bipolar disorders! Lithium remains the gold standard treatment of bipolar mood disorder. But, sorely, it is underutilized in Child/Adolescent Psychiatry, despite Food and Drug Administration's approval for a...

is only observed indirectly. For example, we might have a spectrum and want to determine the species that produced it as well as their relative proportions. Or we may have sonar measurements of a containment tank and want to know whether it has an internal crack. Here is this issue’s homework assignment: given a blurred image and a linear model for the blurring, reconstruct the original image. ...