863 research outputs found

    Characterizing water quality and hydrologic properties of urban streams in central Virginia

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    The objective of this study was to characterize water quality and hydrologic properties of urban streams in the Richmond metropolitan area. Water quality data were analyzed for six urban sites and two non-urban sites. Geomorphological surveys and conservative tracer studies were performed at four urban sites and one non-urban site to describe intra- and inter- site variability in transient storage, channel geomorphology, and related hydrologic parameters. Urban sites showed elevated concentrations of nitrogen and more variable TSS concentrations relative to reference sites. Urban channels were deeply incised with unstable banks and low sinuosity. Little Westham Creek exhibited the greatest transient storage. This site was characterized by large, deep pools and therefore it is likely that transient storage was associated with surface water storage. Transient storage was low at all other sites, particularly for the study reach at Reedy Creek, which flowed through a concrete channel. Lowest transient storage was observed at this site in spring, though higher values were measured in summer corresponding to the presence of biofilms, A lower, more naturalized section of the concrete channel was found to have greater transient storage suggesting the possibility of passive restoration of concrete channels in urban environments. This study documents variability in the structure and function of urban streams. Restoration projects should work to improve impairments that are specific to each site at both the reach and watershed scale to maximize the efficacy of restoration

    Child Marriage in Ghana: A ProjectsAbroad Internship

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    For her Community Engaged Learning internship, Rikki travelled to Ghana with ProjectsAbroad to volunteer in Ghana for several weeks in the summer of 2017. Accompanied by a friend, the two worked together to study several key issues in child marriage that occur in Ghana, and to produce a list of recommended points of action for future volunteers

    Multi-brand hospitality operations branding strategies

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    The purpose of this professional paper is to identify the optimal brand architecture for MGM MIRAGE’s Project CityCenter through synthesis of a review of branding strategies throughout the hospitality industry and a review of Project CityCenter’s goals. As Project CityCenter represents such a massive undertaking from both a financial and marketing perspective, a review of strategies external to MGM MIRAGE is critical; this paper endeavors to highlight branding strategies for potential adoption at Project CityCenter. The project’s significance is affirmed by Terri Lanni, Chairman and CEO of MGM MIRAGE, “Project CityCenter confirms a cultural and lifestyle revival of city living, reaffirms the growing sophistication and maturity of Las Vegas and sets a benchmark for new growth and exciting new experiences as the city moves into the next 100 years” (World Class Architects, 2005)

    PEMANFAATAN MIKROKONTROLER AT89S51 SEBAGAI PENGGESER FASA PADA ANTENA ARRAY

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    Utilization of microcontroller especially MCS-51 family has been widely implemented in various applications, such as control and telecommunications applications. One of them is the phase shifting array antenna in the telecommunication field. The Array Antenna was designed from some of dipole antenna.  Each element at dipole antenna has a different phase and can be controlled electronically. The phase shifting was done using AT89S51 microcontroller that functioned as an electronic switch on the transmission cable connection. The phase of the array antenna will be moved without moving the structure of the array antenna itself, so that the direction of radiation pattern can be changed in accordance with the phase shifting between the antenna elements
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