3,238 research outputs found

    Ohio Guide for Land Application of Sewage Sludge

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    Tourism Information Packaging and Promotion, the GIS Approach--the Case of Jomoro District of Ghana

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    The importance of tourism to the economic development of countries cannot be overemphasized. All activities involved in tourism are based on information, so it is largely an information product. In spite of the immense benefits to be derived, the industry has not received the needed boost in terms of investments. This is because information about tourists’ sites are not properly organized, packaged and marketed. Most of the information about the industry is in text form which does not contain the basic information that tourists and investors require in order to make informed decisions. The research seeks to study and explore the use of ICT to packaging tourism information using GIS with the view to enhancing tourism information packaging, promotion and development in Ghana using the Jomoro district as a case study. It further seeks to explore how GIS technology can be used for tourism data acquisition, compilation, storage, construction and output for presentation in map form with text embedded in them, in order to enhance tourism promotion and development in the country

    Nimbus 7 solar backscatter ultraviolet (SBUV) ozone products user's guide

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    Three ozone tape products from the Solar Backscatter Ultraviolet (SBUV) experiment aboard Nimbus 7 were archived at the National Space Science Data Center. The experiment measures the fraction of incoming radiation backscattered by the Earth's atmosphere at 12 wavelengths. In-flight measurements were used to monitor changes in the instrument sensitivity. Total column ozone is derived by comparing the measurements with calculations of what would be measured for different total ozone amounts. The altitude distribution is retrieved using an optimum statistical technique for the inversion. The estimated initial error in the absolute scale for total ozone is 2 percent, with a 3 percent drift over 8 years. The profile error depends on latitude and height, smallest at 3 to 10 mbar; the drift increases with increasing altitude. Three tape products are described. The High Density SBUV (HDSBUV) tape contains the final derived products - the total ozone and the vertical ozone profile - as well as much detailed diagnostic information generated during the retrieval process. The Compressed Ozone (CPOZ) tape contains only that subset of HDSBUV information, including total ozone and ozone profiles, considered most useful for scientific studies. The Zonal Means Tape (ZMT) contains daily, weekly, monthly and quarterly averages of the derived quantities over 10 deg latitude zones

    A comparison between static and dynamic foot mobility magnitude measures

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    Traditional methods used to assess foot posture during dynamic activities rely on static measures of foot dimensions during partial weight bearing. In recent years, evidence was found which links musculoskeletal and overuse injury patterns in athletes to foot posture. To be able to accurately assess the relationship between injury patterns and foot posture, it might be necessary to study changes in the foot posture during the dynamic activities that the athlete normally undertakes. The purpose of this research is to introduce a method which can be used to measure changes in the foot posture during dynamic activities, hence providing a better prediction of the changes in the foot posture and its relationship to lower limb injuries. The results from static and dynamic foot posture measures were compared for two subjects and the results showed significant differences

    GALEX, Optical and IR Light Curves of MQ Dra: UV Excesses at Low Accretion Rates

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    Ultraviolet light curves constructed from NUV and FUV detectors on GALEX reveal large amplitude variations during the orbital period of the Low Accretion Rate Polar MQ Dra (SDSSJ1553+55). This unexpected variation from a UV source is similar to that seen and discussed in the Polar EF Eri during its low state of accretion, even though the accretion rate in MQ Dra is an order of magnitude lower than even the low state of EF Eri. The similarity in phasing of the UV and optical light curves in MQ Dra imply a similar location for the source of light. We explore the possibilities of hot spots and cyclotron emission with simple models fit to the UV, optical and IR light curves of MQ Dra. To match the GALEX light curves with a single temperature circular hot spot requires different sizes of spots for the NUV and FUV, while a cyclotron model that can produce the optical harmonics with a magnetic field near 60 MG requires multipoles with fields > 200 MG to match the UV fluxes.Comment: accepted for ApJ; 15 pages, 7 tables, 8 fig

    On the Challenges of Identifying Benthic Dominance on Anthropocene Coral Reefs

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    The concept of dominance is frequently used to describe changes in rapidly reconfiguring ecosystems, but the definition of dominance can vary widely among studies. Using coral reefs as a model, we use extensive benthic composition data to explore how variability in applying dominance concepts can shape perceptions. We reveal that coral dominance is sensitive to the exclusion of key algal groups and the categorization of other benthic groups, with ramifications for detecting an ecosystem phase shift. For example, ignoring algal turf inflates the dominance of hard and soft corals in the benthic habitats underpinning reef ecosystems. We need a consensus on how dominance concepts are applied so that we can build a more comprehensive understanding of ecosystem shifts across a broad range of aquatic and terrestrial settings. For reefs, we highlight the benefits of comprehensive and inclusive surveys for evaluating and managing the altered ecosystem states that are emerging in the Anthropocene
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