Radiative Penguin Decays at the B Factories

An overview of the measurements of b->s\gamma, b->d\gamma and b->sll penguin transitions at the B Factories is presented.Comment: To appear in the proceedings of the "Flavor Physics & CP Violation Conference, Vancouver, 2006". 6 pages, 6 figures. (Revisions move two figure for better alignment, fix a typo in one of the references and add one theory reference.

Does the Mortality Decline Promote Economic Growth?

This paper analyzes qualitatively and quantitatively the e ects of declining mortality rates on fertility, education and economic growth. The analysis demonstrates that if individuals are prudent in the face of uncertainty about child survival, a decline in an exogenous mortality rate reduces precautionary demand for children and increases parental investment in each child. Once mortality is endogenized, population growth becomes a hump-shaped function of income per capita. At low levels of income population growth rises as income per capita rises leading to a Malthusian steady-state equilibrium, whereas at high levels of income population growth declines leading to a sustained growth steadystate equilibrium.Malthus, Survival Probability, Fertility, Education, Population Growth

Maskless imaging of dense samples using pixel super-resolution based multi-height lensfree on-chip microscopy.

Lensfree in-line holographic microscopy offers sub-micron resolution over a large field-of-view (e.g., ~24 mm2) with a cost-effective and compact design suitable for field use. However, it is limited to relatively low-density samples. To mitigate this limitation, we demonstrate an on-chip imaging approach based on pixel super-resolution and phase recovery, which iterates among multiple lensfree intensity measurements, each having a slightly different sample-to-sensor distance. By digitally aligning and registering these lensfree intensity measurements, phase and amplitude images of dense and connected specimens can be iteratively reconstructed over a large field-of-view of ~24 mm2 without the use of any spatial masks. We demonstrate the success of this multi-height in-line holographic approach by imaging dense Papanicolaou smears (i.e., Pap smears) and blood samples