In Defense of His Holiness: The Cellini Plaque

The plaque depicting Cellini was donated to Gettysburg College by Reverend Jeremiah Zimmerman, Class of 1873, who later became a lecturer at Syracuse University and a frequent benefactor of Gettysburg College. A highly educated alum, Reverend Zimmerman became a clergyman and traveled the world for over a decade to further his studies, ranging from Asian culture to ancient coinage. The plaque itself measures 32” x 26.75” x 2.5”, is of considerable weight for a porcelain plate, and is painted in the 19th century academic style to offer a dramatic interpretation of Benvenuto Cellini’s actions during the 1527 Sack of Rome. Specifically, the scene captures a dramatized (or even perhaps imagined) moment of Cellini outside the Castel Sant’Angelo, the site of a fortress used by the Holy See to defend against outside invaders. [excerpt

SUB LEGE TO SUB GRATIA: An Iconographic Study of Van Eyck’s Annunciation

When the Archangel Gabriel descended from heaven to inform the Virgin Mary of her status as God’s chosen vehicle for the birth of Jesus Christ, she was immediately filled with a sense of apprehension. Gabriel’s words, “...invenisti enim gratiam apud Deum [you have found favor with God],” reassured the Virgin that she would face no harm, and the scene of the Annunciation (what this moment has come to be called) has forever been immortalized in Christian belief as a watershed moment in the New Testament. While many Byzantine icons of the Medieval period sought to depict this snapshot in time and commemorate its importance, the most notable artistic examples of The Annunciation began to appear in the 15th century as the stylistic and symbolic traditions of the Renaissance began to take shape. While the works of artists such as Sandro Botticelli and Leonardo da Vinci have come to generally be known as the touchstones of this early Renaissance period, the talents and contributions of northern masters must not be overlooked

Global Diseases, Global Patents and Differential Treatment in WTO Law

As of January 1, 2005, all developing country members of the WTO are required to implement the WTO Agreement on Trade Related Intellectual Property Rights (TRIPS). We analyze the issue of access to patented medicine to treat global and neglected diseases in developing countries in the context of WTO law. We present legal and economic arguments that support balancing the rights of producers and users on a market-by- market basis and argue against taking a uniform approach globally. We conclude that global patent rights are not necessary to provide research incentives to pharmaceutical firms to invent treatments for global and neglected diseases. We develop an analytical framework for assessing special and differential treatment of developing countries in WTO law and apply this framework to TRIPS. We then propose a formula for assessing the correct balance between the rights of producers and users on a market-by-market basis.WTO, TRIPS, AIDS, Chapter 6, HIV, Index Construction

An efficient numerical algorithm for the transient analysis of high-frequency non-linear circuits

The paper proposes a new approach for the discrete-time integration of non-linear differential equations that describe the behaviour of high-frequency circuits, in particular those containing complex equivalent-circuit models of microwave transistor devices. The proposed approach reformulates a conventional predictor-corrector method in terms of Pad�© approximates about each function sample. The method is especially suited to the kind of non-linear stiff differential equations that arise frequently in high-frequency analysis

Resolving the Radio Source Background: Deeper Understanding Through Confusion

We used the Karl G. Jansky Very Large Array (VLA) to image one primary beam area at 3 GHz with 8 arcsec FWHM resolution and 1.0 microJy/beam rms noise near the pointing center. The P(D) distribution from the central 10 arcmin of this confusion-limited image constrains the count of discrete sources in the 1 < S(microJy/beam) < 10 range. At this level the brightness-weighted differential count S^2 n(S) is converging rapidly, as predicted by evolutionary models in which the faintest radio sources are star-forming galaxies; and ~96$% of the background originating in galaxies has been resolved into discrete sources. About 63% of the radio background is produced by AGNs, and the remaining 37% comes from star-forming galaxies that obey the far-infrared (FIR) / radio correlation and account for most of the FIR background at lambda = 160 microns. Our new data confirm that radio sources powered by AGNs and star formation evolve at about the same rate, a result consistent with AGN feedback and the rough correlation of black hole and bulge stellar masses. The confusion at centimeter wavelengths is low enough that neither the planned SKA nor its pathfinder ASKAP EMU survey should be confusion limited, and the ultimate source detection limit imposed by "natural" confusion is < 0.01 microJy at 1.4 GHz. If discrete sources dominate the bright extragalactic background reported by ARCADE2 at 3.3 GHz, they cannot be located in or near galaxies and most are < 0.03 microJy at 1.4 GHz.Comment: 28 pages including 16 figures. ApJ accepted for publicatio

The higher order C_n dispersion coefficients for the alkali atoms

The van der Waals coefficients, from C_11 through to C_16 resulting from 2nd, 3rd and 4th order perturbation theory are estimated for the alkali (Li, Na, K and Rb) atoms. The dispersion coefficients are also computed for all possible combinations of the alkali atoms and hydrogen. The parameters are determined from sum-rules after diagonalizing the fixed core Hamiltonian in a large basis. Comparisons of the radial dependence of the C_n/r^n potentials give guidance as to the radial regions in which the various higher-order terms can be neglected. It is seen that including terms up to C_10/r^10 results in a dispersion interaction that is accurate to better than 1 percent whenever the inter-nuclear spacing is larger than 20 a_0. This level of accuracy is mainly achieved due to the fortuitous cancellation between the repulsive (C_11, C_13, C_15) and attractive (C_12, C_14, C_16) dispersion forces.Comment: 8 pages, 7 figure