X-alpha calculation of transition energies in multiply ionized atoms

It is shown that the accuracy of calculations can be improved if appropriate (different) values of alpha are used for each configuration. Alternatively, the Slater Transition state can be used, wherein a total energy difference is related to a difference in single electron eigenvalues. By a series expansion, the value of alpha for an excited configuration can be related to its value for the ground state configuration. The terms Delta alpha (delta Epsilon/delta alpha) exhibit a similar dependence on atomic number as the ground state values of alpha. Results of sample calculations are reported and compared with experiment

Ouachita Handbell Ringers Concert

This is the promotional poster from the Ouachita Handbell Ringers Concert, held on November 17, 2020, in Berry Chapel

A Service of Lessons and Carols

This is the program for the annual Christmas concert, A Service of Lessons and Carols, held on December 8, 1997, in the McBeth Recital Hall

Using the RSA or RSA-B accumulator in anonymous credential schemes

We review the two RSA-based accumulators introduced by Camenisch and Lysyanskaya in 2002 in the setting of revocation for anonymous credential schemes, such as Idemix or BBS+. We show that in such a setting, the lower and upper bounds placed on the accumulated values in the paper are unnecessarily strict; they can be removed almost entirely (up to the group order of the credential scheme). This allows the accumulators to be used on elliptic curves of ordinary sizes, such as the ones on which BBS+ is commonly implemented. We also offer some notes and optimizations for implementations of anonymous credential schemes that use these accumulators to enable revocation

The Ouachita Handbell Ringers in a Spring Concert

This is the program for The Ouachita Handbell Ringers in a spring concert directed by Russell Hodges. The concert was held on April 30, 1990, in the Mabee Fine Arts Center Recital Hall