1,170 research outputs found

    Fault tolerant data management system

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    Described in detail are: (1) results obtained in modifying the onboard data management system software to a multiprocessor fault tolerant system; (2) a functional description of the prototype buffer I/O units; (3) description of modification to the ACADC and stimuli generating unit of the DTS; and (4) summaries and conclusions on techniques implemented in the rack and prototype buffers. Also documented is the work done in investigating techniques of high speed (5 Mbps) digital data transmission in the data bus environment. The application considered is a multiport data bus operating with the following constraints: no preferred stations; random bus access by all stations; all stations equally likely to source or sink data; no limit to the number of stations along the bus; no branching of the bus; and no restriction on station placement along the bus

    Outer planet probe engineering model structural tests

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    A series of proof of concept structural tests was performed on an engineering model of the Outer Planets Atmospheric Entry Probe. The tests consisted of pyrotechnic shock, dynamic and static loadings. The tests partially verified the structural concept

    The Mature Market: Underlying Dimensions and Group Differences of a Potential Market for the Hotel Industry

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    The mature market, defined as age 55 and up and consisting of approximately 64 million Americans, is expected to increase. Studies show that this group travels more frequently, travels greater distances, and stays longer. The authors seek to determine if underlying dimensions exist for the mature individual with regard to the selection criteria for lodging when traveling for pleasure, and to determine if differences exist between various demographic subsegments of this market with regard to these underlying dimensions

    Implementasi Kebijakan Pemerintah Kota Pekanbaru dalam Pengendalian dan Penanggulangan Rabies Tahun 2013

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    The background about the implementation of mayors policies regulation is less than optimal the implementation of mayors regulation numbers 23 of 2012 about control and prevention of rabies in Pekanbaru can be seen there are still many populations of rabies animals spreader and also gite case that seleneed positive to rabies. Many people doesnt know and dont care and about mayors regulation numbers 23 of 2012. The purpose of this research is to know about mecanism of mayors regulation implementation process, number 23 of 2012 and whater abstracles that happen in that implementation of regulation to so make the implementation isnt optimal. The purpose of this research is to know about mecanism of mayors regulation implementation process, number 23 of 2012 and whater abstracles that happen in that implementation of regulation to so make the implementation isnt optimal. This Theory concept that used propound the factors that influencing policy implementatoin of Edward III collaboration, that is comunication resource and disposision. The method used in this research is discriptive, with qualitative approach. Data collection technique taht used were interview, observation, and documentation.the data type used was primary data obtained from the field and secondary data obtained where research is ussualy not available bsed on research result through interview and documentation. It can be seen that implementation of mayors regulation number 23 of 2012 about control and prevention of rabies is still not optimal. This Theory concept that used propound the factors that influencing policy implementatoin of Edward III collaboration, that is comunication resource and disposision. The method used in this research is discriptive, with qualitative approach. Data collection technique taht used were interview, observation, and documentation.the data type used was primary data obtained from the field and secondary data obtained where research is ussualy not available bsed on research result through interview and documentation. It can be seen that implementation of mayors regulation number 23 of 2012 about control and prevention of rabies is still not optimal. There are still have shortages in implementation of mayors regulation. The factors that influence this mayors regulation number 23 of 2012 is comunication, disposition, resource, and bureacracy system factors. There are still have shortages in implementation of mayors regulation. The factors that influence this mayors regulation number 23 of 2012 is comunication, disposition, resource, and bureacracy system factors. Key words: implementation policy key, control, prevention Key words: implementation policy key, control, preventio

    Release of mercury halides from KCl denuders in the presence of ozone

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    KCl-coated denuders have become a standard method for measurement of gaseous oxidized mercury, but their performance has not been exhaustively evaluated, especially in field conditions. In this study, KCl-coated and uncoated quartz denuders loaded with HgCl<sub>2</sub> and HgBr<sub>2</sub> lost 29–55% of these compounds, apparently as elemental mercury, when exposed to ozone (range of 6–100 ppb tested). This effect was also observed for denuders loaded with gaseous oxidized mercury at a field site in Nevada (3–37% of oxidized mercury lost). In addition, collection efficiency decreased by 12–30% for denuders exposed to 50 ppb ozone during collection of HgCl<sub>2</sub>. While data presented were obtained from laboratory tests and as such do not exactly simulate field sampling conditions, these results indicate that the KCl denuder oxidized mercury collection method may not be as robust as previously thought. This work highlights needs for further testing of this method, clear identification of gaseous oxidized mercury compounds in the atmosphere, and development of field calibration methods for these compounds

    Release of mercury halides from KCl denuders in the presence of ozone

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    KCl-coated denuders have become a standard method for measurement of gaseous oxidized mercury, but their performance has not been exhaustively evaluated, especially in field conditions. In this study, KCl-coated and uncoated quartz denuders loaded with HgCl<sub>2</sub> and HgBr<sub>2</sub> lost 29–55% of these compounds, apparently as elemental mercury, when exposed to ozone (range of 6–100 ppb tested). This effect was also observed for denuders loaded with gaseous oxidized mercury at a field site in Nevada (3–37% of oxidized mercury lost). In addition, collection efficiency decreased by 12–30% for denuders exposed to 50 ppb ozone during collection of HgCl<sub>2</sub>. While data presented were obtained from laboratory tests and as such do not exactly simulate field sampling conditions, these results indicate that the KCl denuder oxidized mercury collection method may not be as robust as previously thought. This work highlights needs for further testing of this method, clear identification of gaseous oxidized mercury compounds in the atmosphere, and development of field calibration methods for these compounds
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