4 resultados para Sykes, Arthur Ashley, 1683 or 4-1756.

em Iowa Publications Online (IPO) - State Library, State of Iowa (Iowa), United States


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As a parent you’re concerned about your children’s health and well-being. You teach them about crossing the street safely and about personal safety. You talk with them about the risks of using tobacco, alcohol and other illegal drugs. But did you know that one of the fastest growing threats to youth today is the abuse of prescription and over-the-counter (OTC) drugs? Did you know that nearly one in five teens (19 percent or 4.5 million) nationally report intentionally abusing prescription drugs to get high, and one in ten reports abusing cough medicine to get high.

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A startlingly new development has occurred over the past year: The number of offenders residing in Iowa’s correctional institutions has actually dropped. An ever increasing prison population – in 1990 the prison count stood at 3,842 offenders – reached an all-time high of 8,940 offenders on October 3,2007, an increase of 233% over 17 years. A significant cause for the increase has been longer stays in prison, due in part to the long-term effect of restrictions on parole eligibility. Over the past nine months, however, the prison population has been declining – to 8,573 on July 15, 2008 (not including 129 jail prisoners temporarily housed at ASP and IMCC due to the flooding). This represents a decrease of 367 offenders – or 4.1% - from the October 3, 2007 high.

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Kansas State University, with funding from the Kansas Department of Transportation (KDOT), has developed a computerized reduction system for profilograms produced by mechanical profilographs. The commercial version of the system (ProScan (trademark)) is marketed by Devore Systems, Inc. The system consists of an IBM Compatible PC 486SX33 computer or better, Epson LQ-570 printer, a Logitech Scanman 32 hand scanner system, a paper transport unit, and the ProScan software. The Scanner is not adaptable to IBM computers with the micro channel architecture. The Iowa DOT Transportation Centers could realize the following advantages by using ProScan: (1) Save about 5 to 8 staff hours of reduction and reporting time per Transportation Center per week for a Materials Technician 3 or 4 (the time savings would come during the busiest part of the season); (2) Reduce errors in reduction, transfer, and typing of profile values; (3) Increase the accuracy of the monitor results; and (4) Allow rapid evaluation of contractor traces when tolerance limits between monitor and certified results are exceeded.

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As truck traffic on Iowa secondary roads has increased, engineers have moved to concrete pavements of greater depths. Early designs included thickened edge pavements and depths of seven inches or greater. The designs typically did not have load transfer devices installed in the transverse joints and relied on aggregate interlock for this purpose. In some cases, aggregate interlock was not adequate to deal with the soils and traffic conditions and faulting of the joints has begun to appear. Engineers are now faced with the need to install or retrofit load transfer in the joints to preserve the pavements. Questions associated with this decision range from the type of dowel material to dowel diameter, spacing, number of bars, placement method, and construction techniques to be used to assure reduction or elimination of faulting. Buena Vista County constructed a dowel bar retrofit project on one mile of road. The plan called for addition of the dowels (2, 3, or 4) in the outer wheel path only and surface grinding in lieu of asphalt overlay. The project included the application of elliptical- and round-shaped dowels in a rehabilitation project. Dowel material types included conventional epoxy-coated steel and fiber-reinforced polymer (FRP). This work involved the determination of relative costs in materials to be used in this type of work and performance of FRP and elliptical-shaped steel dowels in the retrofit work. The results indicate good performance from each of the bar configurations and use the results of ride and deflection testing over the research period to project the benefits that can be gained from each configuration vs. the anticipated construction costs. The reader is cautioned that this project could not relate the number of dowels required to the level of anticipated truck traffic for other roads that might be considered.