This study examines painted leaves and fragments that were extracted from a set of choir books created in the last decade of the fifteenth century for the basilica of Santa Maria in Aracoeli in Rome. These remnants are currently housed within various library and museum collections throughout Europe and the United States. The set is agreed upon generally by scholars to have been commissioned by Alexander VI (Rodrigo Borgia, 1431-1503), who was pope from 1492 to 1503, as a gift to the church during his time as pontiff. The choir books for Santa Maria in Aracoeli contain the bulk of the known body of work by the enigmatic illuminator Fra Antonio da Monza. The best known items from this set of choir books are a complete gradual (or book of chants for the Mass) currently housed in the Getty Museum, called the Ludwig Aracoeli Manuscript, and a montage of cuttings in the Albertina Museum, Vienna, that features a miniature of the Pentecost. These are studied in the context of the artistic patronage of Alexander VI, and political and diplomatic gift cultures in papal Rome during the last decade of the Quattrocento. Alexander VI's gift to Santa Maria in Aracoeli served multiple functions. It advanced church music, but is also an example of a pontiff using custom luxury books for cultural diplomacy. The intent of the choir books was to build social relationships and augment the prestige of Alexander VI's regime with a local audience. Alexander VI sought to acknowledge the symbolic resonance of Santa Maria in Aracoeli and attempted to recuperate the site's importance for his reign through the gift. This study argues that the choir books were commissioned by the pontiff to promote his cultural and religious authority through abbellimento or "embellishment", the practice of commissioning ostentatious liturgical objects and additions to religious ceremonies for the purpose of developing esteem for an ecclesiastical office. This thesis argues that another purpose of the bestowment was to appease the Observant Franciscans in charge of the basilica in anticipation of Alexander VI's reforms of the Franciscan order.

Radio Frequency Identification (RFID) uses RF radiation to identify physical objects. With decreasing integrated circuit (IC) cost and size, RFID applications are becoming economically feasible and gaining popularity. Researchers at MIT suggest that RFID tags operating in the 900 MHz band (ultrahigh frequency, UHF) represent the best compromise of cost, read range, and capabilities [1]. Passive RFID tags, which exclude radio transmitters and internal power sources, are popular due to their small size and low cost [1]. This project produced Cal Poly’s first ever on-campus printed, assembled, and operational UHF (902 to 928 MHz) passive RFID tag. Project goals include RFID tag antenna design and simulation using the EMPro electromagnetic (EM) simulation tool [47], establishing the tag fabrication process, and testing, operational verification, and comparisons to commercial tag performance. The tag antenna design goal is to meet or exceed the read range performance of the commercial Sirit tag [23] while minimizing the required tag conductive area. This thesis provides an overview of the UHF passive RFID tag fabrication process. Cal Poly’s Graphic Communication Department Laboratory applied a screen‑printing process to print RFID tag antenna patterns onto plastic (PET) substrates. RFID IC-substrate packages were manually attached to tag antennas with conductive adhesives and functionally verified and compared to commercial tag performance. RFID tag antennas were impedance matched (using EMPro) to the Monza 3 RFID IC to maximize IC to antenna power transfer and RFID tag read range.Tag antenna read range (maximum reader-tag communication distance) was characterized in Cal Poly’s Anechoic Chamber, while RFID tag matching characteristics were measured using the differential probe method [33-41] and compared to simulations. Read range results indicate that one of the designs developed in this thesis outperforms a commercial UHF RFID tag.