Abstract: An improved feeding bowl for household pets having a central portion for placement of food or water surrounded by a first annular wall upwardly disposed joining a second annular wall downwardly disposed, wherein the first and second annular walls meet at an angle, ?2, ranging from about 5 to about 120 degrees to facilitate stacking of multiple bowls, wherein said second downwardly disposed annular wall engages a peripheral portion of the bowl, or apron, having a radial extent, L1, sufficient to cause the household pet to stand on the apron in order to feed wherein said apron engages the surface upon which the bowl is disposed at an angle, ?1, ranging from 0 to about 30 degrees.

Abstract: A graph is constructing using a user node of a user and a set of connection nodes corresponding to connections in a social network of the user. The graph is overlaid on a risk map, which is a mapping of a geo-social risk characteristic of a geographical area. A first and a second risk indices are determined for a first and a second connection in the set of connections. Using the risk map, a first and a second risk diffusion boundary of the first and the second risk index are computed. When the first risk diffusion boundary includes the user node, a first risk contribution from the first connection node to the user node is computed using the first risk index. Using the first risk contribution, a risk index of the user is determined to accounts for a risk attributable to the user due to the user's social network.