778 research outputs found

    A Gathering For Gardner Puzzle-Game

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    Each different letter of GATHERING FOR GARDNER is used exactly three times in the following words: DIE, FAD, FIT, FOG, GIN, HAG, HER, HOD, NOR, RAT, TEN

    The White Rabbit 12-Puzzle

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    Martin Gardner\u27s fondness for the characters and themes of Lewis Carroll\u27s Alice is well-known and to honor Gardner we offer two word puzzles to be played on the 12-node diagram of the WHITE RABBIT

    Chris Farrell's Sound Money Guide to Sharing the Wealth

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    All across the country, Americans get together to share their concerns and passions, especially when it comesto improving their communities. The philanthropic spirit moves people to support the arts, contribute to theiralma maters, construct low-income housing, improve education and tackle all kinds of social ills. America'scharities, nonprofit organizations, and religious congregations are remarkably diverse, ranging from smallgroups of volunteers working out of basement offices to national fraternal organizations with several hundredthousand members to multi-billion dollar enterprises with skyscraper headquarters and global ambitions.Generosity, whether measured in time or money, is on the rise after stagnating for almost a quartercentury following the economic turmoil of the 1970s. Americans gave some 190billion,or2.1percentofGrossDomesticProduct,tocharitiesin1999,accordingtofigurescompiledbytheAmericanAssociationofFundRaisingCounsel.Thatsupfrom190 billion, or 2.1 percent ofGross Domestic Product, to charities in 1999, according to figures compiled by the American Association ofFund-Raising Counsel. That's up from 124 billion and 1.5 percent of GDP in 1997 (see chart on page 4).Volunteerism is strong, too. Among adults age 18 or over, more than half volunteer their time. In a sense,the nonprofit community is the nation's largest employer with some 109 million volunteers donatingan average of 3.5 hours a week.This guide is designed as an introduction to the major options available for giving money away

    Cluster Typologies and Firm Survival: Complementary and Substitutive Effects

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    Agglomerations, or clusters, are typically defined as the idea that firms can benefit from shared locations through mutual knowledge, labor pools, and suppliers, and have long been a subject of scholarly interest. However, research in geographic economics has identified a broad array of agglomeration externalities beyond such supply-side clusters, which problematizes the use of the term cluster to refer to any geographic grouping of firms. Clusters can be groups of firms from the same country ( country-of-origin clusters), demand side (clustering to lower search costs for customers), Jacobsian clusters (tight groups of diverse firms), internal (groupings of firms from the same parent company), or urban (focused in areas of high population density). Since the nature of inter-firm interactions should differ in each type of agglomeration, our study contributes to the agglomeration literature by identifying complementary and substitutive relationships between agglomeration typologies. Specifically, we extend prior work which has examined the mutual effects of Jacobsian and Marshallian externalities by attempting to answer our research question, i.e., what combination of agglomeration externalities consistently leads to firm survival? Using establishment-level data from the software and clothing industries in the state of Texas, we identify multiple combinations of cluster types (and their absence) which lead to firm survival on a consistent basis. The results find several combinations of causal mechanisms that lead to the equifinal outcome of firm survival. Our configurations exceed levels supported by prior literature with PRI scores over .7 and coverage scores between .05 and .109.https://digitalcommons.odu.edu/gradposters2023_business/1001/thumbnail.jp

    Slack, Location, Diversification, or R&D Intensity? How the Most (and Least) Innovative Firms Deploy Resources

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    Firms frequently innovate by recombining knowledge components. Through bringing together diverse scientific or technological concepts, firms can reassemble these extant knowledge components into novel and useful innovations. At the same time, many of the mechanisms firms use to recombine knowledge components carry substantial agency costs. When firms conduct research and development, diversify, hold slack resources, or locate near close competitors, they become vulnerable to misappropriation of investor resources due to opportunistic actions by agents. Using patent citation data from semiconductor firms, we study how firms, which consistently produce high-quality innovations, balance the need for knowledge recombination with the need to protect investors from opportunism. Our results indicate that, consistent with an agency lens, innovative firms operate under a significant debt load. Consistent with the knowledge recombination perspective, however, innovative firms typically engage in multiple activities that lead to innovation via knowledge recombination.https://digitalcommons.odu.edu/gradposters2023_business/1002/thumbnail.jp

    Hurricane Rated Pet Door Final Design Report

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    Our Senior Design group has been commissioned by a major pet door distributor, Pet Doors USA, to create a working prototype of a hurricane rated pet door. The main goal of this project is to meet specifications set out for us by our sponsor which include; making the door accessible to a 25-100 lb dog and meeting DP50 Hurricane Code. The final design is a rotating door that utilizes a worm gear and worm screw that turn a shaft to which the door is attached. A polycarbonate front panel is used due to its strength and impact resistance. The automation is accomplished with the use of RFID tags and sensors. The pet wears an RFID tag and when it comes in range of the sensors it signals the door to open. The final tests to be performed on the door included the water infiltration test, the final impact test, and the pressure/deflection test. For the water infiltration test, cobalt chloride paper was used to determine whether any moisture came through the door after spraying it with a hose. During the test, water began to infiltrate the corner of the door where the individual pieces of the weather-stripping meet and allow for a small crack. The pressure test setup was to place the door horizontally and place a box full of sand directly above the door. This test was successful with no permanent deflection or perceived dam- age to the pet door. For the impact test, a rack of weights with a 2x4 attached to it was dropped onto the door panel. The panel withstood the impact with no signs of cracks, indentions, or any other damage. When the door was tested for functionality, it was discovered that the power generated by the controller is insufficient to open the door. However, by attaching the motor to an external power source, the door was able to open easily. Thus, both the mechanical and electrical assemblies work independently but in order to merge them there needs to be more time and effort devoted to this project. Aside from this, the project can be considered a success in that all failures have been identified and a minimal amount of additional work is needed to create a working prototype that can pass all the required tests

    Task demands determine comparison strategy in whole probe change detection

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    Automatically detecting asymmetric running using time and frequency domain features

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    Human motion analysis technologies have been widely employed to identify injury determining factors and provide objective and quantitative feedback to athletes to help prevent injury. However, most of these technologies are: ex- pensive, restricted to laboratory environments, and can require significant post processing. This reduces their ecological validity, adoption and usefulness. In this paper, we present a novel wearable inertial sensor framework to accurately distinguish between symmetrical and asymmetrical running patterns in an unconstrained environment. The framework can automatically classify symmetry/asymmetry using Short Time Fourier Trans- form (STFT) and other time domain features in conjunction with a customized Random Forest classifier. The accuracy of the designed framework is up to 94% using 3-D accelerometer and 3-D gyroscope data from a sensor node attached on the upper back of a subject. The upper back inertial sensors data were then down-sampled by a factor of 4 to simulate utilizing low-cost inertial sensors whilst also facilitating a decrease of the computational cost to achieve near real-time application. We conclude that the proposed framework can potentially pave the way for employing low-cost sensors, such as those used in smartphones, attached on the upper back to provide injury related and performance feedback in real-time in unconstrained environments
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