Catastrophes and Weddings. Chachi Ritual as Metamorphosis

Male circumcision as a religious ritual.

Congenital satellite nevi are known risk factors for neurocutaneousmelanosis.1 Their impact on the risk formalignant melanoma is not as well established, but some studies point to a possible increased risk in patients with GCMN and satellite nevi.1,3 In summary, our patient is an example of the need for continued dermatologic follow-up and high index of suspicion for newnodules appearing in pat...

As-Rigid-AsPossible Distance Field Metamorphosis

Widely used for morphing between objects with arbitrary topology, distance field interpolation (DFI) handles topological transition naturally without the need for correspondence or remeshing, unlike surface-based interpolation approaches. However, lack of correspondence in DFI also leads to ineffective control over the morphing process. In particular, unless the user specifies a dense set of la...

Quality as Transformation: Educational Metamorphosis

The Decline of Shotgun Weddings∗

It is well known that the tendency of unmarried pregnant women to marry has declined precipitously since the 1960s. This has been attributed to the undermining by new birth-control technologies of the "Shotgun-wedding" social norm that enforced commitment to marriage on pregnancy. However the fraction of marriages in which the bride was already pregnant before the wedding has remained remarkabl...

Climate catastrophes

Climate catastrophes, which many times occurred in the geological past, caused the extinction of large or small populations of animals and plants. Changes in the terrestrial and marine biota caused by the catastrophic climate changes undoubtedly resulted in considerable fluctuations in global carbon cycle and atmospheric gas composition. Primarily, carbon dioxide and other greenhouse gas conten...