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The Hookstown Volunteer Fire Department holds an annual fundraiser, the Sportsman’s Bash, which entails the sale of 2,500 raffle tickets for various prizes. Realizing the need to track these ticket sales efficiently, a database was designed and implemented using the PostgreSQL database management system. In order to provide a simple and intuitive way to enter and view information in the database, a graphical user interface was also designed and implemented using the Java programming language. The project provided valuable lessons not only in technical areas but on personal levels as well. Issues to be discussed include the requirements gathering process, design and implementation decisions, and the complex personal interactions with the customer thereby highlighting the many intricacies of the software engineering process.
First defined in Euclid’s Elements by another name, the golden ratio results from the division of a line segment into two unequal segments such that the length of the shorter segment to the longer is equal to the length of the longer segment to the whole. Many artists and composers have proportioned their works according to the golden ratio, perhaps because of its frequent occurrence in nature or its aesthetically-pleasing qualities. This presentation investigates proportional relationships in the works of Mozart and other composers. A statistical analysis was conducted to determine their level of adherence to the golden ratio. Speculations are discussed as to whether these proportions were used intentionally or occur as the result of an innate sense of form and balance.
In 2007, Google made its entry alongside the Open Handset Alliance into the mobile handset market. Their entry comes in the form of Google Android, a mobile operating system. Currently there is one device on the market that uses Android: the HTC G1, from T-Mobile. As a mobile operating system, Google Android can be made to run on many devices, from smartphones and PDAs to miniature embedded computers. It is free and open source and runs on the Linux 2.6 kernel. This presentation discusses the Open Handset Alliance, the architecture of the Android operating system, the process of developing applications for Android, and the pros and cons of such development.
The Perfect Shuffle is a difficult and elusive card technique known by few and performed by even fewer. It has some astounding applications within the world of card magic and crooked gambling, and the mathematics behind the perfect shuffle is nearly as impressive. I focus on the mathematics that allows cards to be brought to specific locations in the deck, and even for the entire deck to return to original order after clearly shuffling. Any mathematics required to understand the perfect shuffle are explained during the presentation. To conclude we analyze a popular magic effect that relies on the perfect shuffle technique.
A novel microbial fuel cell design has been applied at a commercial agricultural production facility in order to create voltage production from a Sus domesticus manure substrate. Microbial Fuel Cells (MFC) use bacteria present in the S. domesticus manure substrate to generate electricity. Previous studies have shown that the manure is a viable fuel source. This study adapts a previously productive fuel cell design for application as an alternative fuel source in a large-scale production location. The design uses carbon cloth electrodes of a style 1001, as defined by Fabric Development, Inc., Quakertown, PA. Previous testing (N = 19) revealed that this design effectively produced voltages maximizing at 0.303 V from a 3.8 liter environment. Studies include analysis of the bacterial load of the manure and identification of the most prevalent species in order to further increase the output of each MFC. The physical characteristics of the cell including the internal resistance, total electrical capacity, peak production and lifetime usage are also being evaluated. These studies, performed under actual conditions serve as the basis for future applications at other commercial locations, including those with other vertebrate species.
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