135 research outputs found

    Feasible Offset and Optimal Offset for Single-Layer Channel Routing

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    The paper provides an efficient method to find all feasible offsets for a given separation in a VLSI channel routing problem in one layer. The prior literature considers this task only for problems with no single-sided nets. When single-sided nets are included, the worst-case solution time increases from Theta(n) to Omega(n^2), where n is the number of nets. But, if the number of columns c is O(n), one can solve the problem in time O(n^{1.5}lg n ), which improves upon a `naive\u27 O(cn) approach. As a corollary of this result, the same time bound suffices to find the optimal offset (the one that minimizes separation). Better running times are obtained when there are no two-sided nets or all single-sided nets are on one side to the channel. The authors also give improvements upon the naive approach for c≠O(n), including an algorithm with running time independent of c

    Major Streets: City of Davenport Iowa, February 1946

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    To insure the development of a community in an orderly fashion, it is essential that a plan be developed to guide the future growth of the city. Not a plan devised to encourage the spending of public funds, but a plan that will show the best use to which the tax dollars can be put. A city plan is essentially a general scheme, showing the location and extent of physical improvements needed to serve both the present and future population

    Utilization of LiDAR Technology to Assess Vertical Clearances of Civil Infrastructure

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    The issue of vertical clearances along highway systems impact the functionality of the road network. Extracting current routing clearances for each structure can be a challenging and hazardous task. Pavement changes and roadway rehabilitation projects can alter roadway geometry, complicating efforts to maintain accurate clearance databases. Vertical clearance measurements may vary from one lane to another beneath overhead structures and are often difficult to obtain due to high traffic volumes. Inherently, traditional methods that are used to obtain the measurements routinely impede the flow of traffic and subject workers to dangerous environments. This study will examine the use of a Mobile LiDAR system and its applicability and accuracy to obtain vertical clearances on bridge structures. Further, the study will investigate the impact of utilizing a Mobile LiDAR system on traffic disruption and worker safety. The measurements extracted from LiDAR point clouds are compared to measurements obtained from traditional techniques using a laser tape meter and total station. Results will be analyzed to assist in quantifying the potential error between field and LiDAR measurements. Furthermore, the impact on work zone safety and traffic disruption is investigated. The results obtained from this study can be used to help identify the most effective method to extract infrastructure clearances and aid in future assessments

    Comprehensive City Plan of Vero Beach, Florida

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    This report contained a comprehensive city plan to develop and expand Vero Beach, Florida in 195

    The Comprehensive City Plan of Jacksonville, Florida

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    Jacksonville, Florida Comprehensive city plan of Jacksonville, Florida. Prepared at the direction of the City Commission of the city of Jacksonville under the guidance and supervision of the City Planning Advisory Board by George W. Simons, Jr. Jacksonville, Fla. : Simons, 1931. Includes Supplement no. 1, Zoning map...of Jacksonville, Florida. Map of Jacksonville, Florida and vicinity...1928. (Maps in oversize map box 19). PALMM

    Planning for the Future: Stuart, Florida

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    A Comprehensive Plan on developing Stuart, Florida, 195

    Comprehensive Development Plan City of Plant City, Florida

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    Plant City, Florida Comprehensive development plan city of Plant City, Florida. Prepared by George W. Simons, Jr., Planning Consultant, Jacksonville, Florida. Jacksonville, Fla. : Simons, 1956. Full text available online through Florida Heritage

    The Southern Overland Mail and Stagecoach Line, 1857-1861

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    Mining Claim File: bhp-utah_international--freewest_resources.pdf

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    Maine Mining Bureau File
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