992 research outputs found

    ASME RC Baja Car Drive-train and Differential

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    Every year, the American Society of Mechanical Engineers holds a RC Baja Car Competition. Students from the region are required to design, build, and compete in the annual competition. The purpose of this project and the focus of this report was to build a drivetrain for an RC car, following the guidelines outlined by ASME, to compete in their annual competition. The drivetrain must convert power from a brushed electric motor to the wheels of the car. Gear analysis was used to calculate the power reduction required by the gears in the drive train. The drive train must reduce the revolutions per minute created by the motor before the power gets to the wheels. Using the motor and battery recommended by Professor Beardsley, the motor ran at 17,550 RPM. A tire diameter of about 5’’ was selected for the RC car. With a goal of the RC car reaching 20 mph with 5’’ tires, the speed of the wheels had to be 1344 RPM. This is an overall gear reduction of 13.05. Using a series of 16 tooth and 40 tooth gears, the overall gear reduction that was able to be achieved was 15.625. The overall reduction was increased so the torque produced by the motor, could move the large wheels easier. The speed goal for this RC car was tested during several trials using a known distance and stopwatch. The results will be discussed at SOURCE. Keywords: Design, Drivetrain, ASM

    Chopin’s Piano Sonata No. 3 in B minor Op. 58: A Structural Analysis

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    Chopin’s Piano Sonata No. 3 in b minor Op. 58 is an incredibly important composition to the world of music. This work will uncover many of the unique facets and features of this piece as well as discover the beautiful intricacies of each of the four movements. By learning about this sonata, the reader will gain an understanding of the importance of musical structure and musical form and will gain insight into the ways of Chopin’s compositional style and of romantic piano music as a whole

    Kinetic Controlled-Growth Synthesis of Cadmium Selenide Nanocrystal Quantum Dots

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    A kinetic controlled-growth method has been used to synthesize cadmium selenide, CdSe, nanocrystals. Nanocrystal structures are consistent with that of a quantum dot. Ligand passivation on the surface of the micelle is best carried out using trioctylphosphine, TOP. This allows one to tune the particle surface chemistry. Quantum dots intersperse as colloids within the 1-octadecene solvent matrix. The color gradient observed among the samples is indicative of its dependence on particle size which is consistent with the “particle-in-a-box” theory. Results also indicate that the particle size of these nanocrystals is dependent on reaction time and may be dependent on reaction temperature. Our method presents a greener and faster approach to the synthesis of these important photoactive materials

    The Impact of Federal Reserve Monetary Policy on Sector ETF and Market Cap ETF Performance

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    This study explores the impact of Federal Reserve policy changes on returns and volatility of U.S. equity markets, including large cap, mid cap, and small cap as well as the eleven sectors of the S&P 500. Federal Reserve policy changes in this study are measured by changes in the federal funds target rate. To measure the impact of these rates on U.S. equity markets, I construct a longitudinal dataset inclusive of exchange traded funds (ETFs) that serve as proxies for all eleven sectors, as well as one index and two ETFs that capture the performance of small, mid, and large market capitalization stocks. The monthly performance of these variables are matched against the respective dates of federal funds rate data

    Identity and Nostalgia among the Campbellites

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    Cook, James Maverick (2006) Identity and Nostalgia among the Campbellites, Restoration Quarterly: Vol. 48 : No. 3. This repository hosts selected Restoration Quarterly articles in downloadable PDF format. For the benefit of users who would like to browse the contents of RQ, we have included all issue covers even when full-text articles from that issue are unavailable. All Restoration Quarterly articles are available in full text in the ATLA Religion Database, available through most university and theological libraries or through your local library’s inter-library loan service

    Brexit: what is at Stake for Uk’s financial sector?

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    With Brexit, there is the first case a member state chose to leave the EU. Brexit has a tremendous impact on UK’s financial sector especially with a potential loss of passport rights and reduced access to Europe’s single market. FDI attractiveness in the UK could decline. A competitive tax reform in the UK might boost the attractiveness to FDI again, but even with lower taxes a reduced access to the single market could have a large impact as a key factor for UK’s FDI attraction. Less FDI projects would cause lower productivity and potential economic growth in the UK

    Designing an Economical Vertical Conveyor to Model Industry Practice in Technology Lab

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    As colleges and trade schools across the United States attempt to increase the number of interactive elements in their Engineering and Engineering Technology departments, many smaller institutions are having trouble accumulating enough funding to purchase the necessary robotic systems and supporting components. In addition to the lack of funding, the market for “classroom” sized manufacturing systems is virtually nonexistent. Many students must find internships outside of their institutions to gain the higher levels of experience that they desire. To provide its students with more real-life education, the robotics lab at East Tennessee State University is trying to simulate an industrial work environment, where robotic arms can interact with conveyor belts. The conveyor belt workstations currently in the lab cost tens of thousands of dollars and only include a few small conveyor belts, a hand full of sensors and actuators, and their control boards. These workstations are not only expensive, but they are limited in their functions and potential configurations. The best approach to solving these issues is to create various small-scale, or modular, systems out of inexpensive parts from reliable sources. This method allows institutions to inexpensively replicate the systems that are commonly seen in manufacturing. At present, only the basic, horizontal, conveyor belt module has been designed and tested. The goal of this sub-project will be to add a vertical conveyor belt module. The main function of this module will be to raise and lower items, so that the modular systems can be multi-level using the least amount of space possible. This will be accomplished by modifying the hardware from the base conveyor and experimenting with different belt designs to ensure the items will be able to be carried up without slipping off. The use of multilevel and overhead conveyor systems is a popular space maximization method in industry. The current systems rely on sloped conveyors to move materials to higher levels, wasting valuable space and time. A vertical conveyor belt would decrease the time and distance required to carry materials to various levels
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