Maximized Utility of the Global Positioning System, HR-316, 1991

This report describes a project begun in January 1989 and completed December 1990, with the primary objective of obtaining sufficiently accurate horizontal and vertical control by using Global Positioning System (GPS) for highway applications. The ISU research group studied the operations of the Ashtech GPS receiver in static, pseudo-static, kinematic, and pseudo-kinematic modes. By using the Electronic Distance Measuring Instrument (EDMI) Calibration Baseline at ISU, the GPS receiver was tested for distance measurement accuracy. It was found that GPS measurements differed from the baseline distance by about 5.3 mm. Four projects were undertaken to further evaluate and improve the horizontal as well as the vertical accuracies of the GPS receiver -- (1) The Campus Project: with all points concentrated within a one-mile radius; (2) The Des Moines Project: a typical DOT project with all the points within a five-mile radius; (3) The Iowa Project: with all points within a 100-mile radius in the state of Iowa; and (4) The Mustang Project: an extension of the Iowa project, including a typical DOT project of about 10 miles within the inner 30 mile radius of the Iowa project.

Automated Collection of Sign Inventory Information by Integrating Global Positioning System (GPS) with Videologging Data Collection Activities, 1995

Advances in communication, navigation and imaging technologies are expected to fundamentally change methods currently used to collect data. Electronic data interchange strategies will also minimize data handling and automatically update files at the point of capture. This report summarizes the outcome of using a multi-camera platform as a method to collect roadway inventory data. It defines basic system requirements as expressed by users, who applied these techniques and examines how the application of the technology met those needs. A sign inventory case study was used to determine the advantages of creating and maintaining the database and provides the capability to monitor performance criteria for a Safety Management System. The project identified at least 75 percent of the data elements needed for a sign inventory can be gathered by viewing a high resolution image.

Technology Transfer of As-Built and Preliminary Surveys Using GPS, Soft Photogrammetry, and Video Logging, 2002

This research involved two studies: one to determine the local geoid to obtain mean sea level elevation from a global positioning system (GPS) to an accuracy of ±2 cm, and the other to determine the location of roadside features such as mile posts and stop signs for safety studies, geographic information systems (GIS), and maintenance applications, from video imageries collected by a van traveling at traffic speed.

Stringless Portland Cement Concrete Paving, February 2004

This report describes results from a study evaluating the use of stringless paving using a combination of global positioning and laser technologies. CMI and Geologic Computer Systems developed this technology and successfully implemented it on construction earthmoving and grading projects. Concrete paving is a new area for considering this technology. Fred Carlson Co. agreed to test the stringless paving technology on two challenging concrete paving projects located in Washington County, Iowa. The evaluation was conducted on two paving projects in Washington County, Iowa, during the summer of 2003. The research team from Iowa State University monitored the guidance and elevation conformance to the original design. They employed a combination of physical depth checks, surface location and elevation surveys, concrete yield checks, and physical survey of the control stakes and string line elevations. A final check on profile of the pavement surface was accomplished by the use of the Iowa Department of Transportation Light Weight Surface Analyzer (LISA). Due to the speed of paving and the rapid changes in terrain, the laser technology was abandoned for this project. Total control of the guidance and elevation controls on the slip-form paver were moved from string line to global positioning systems (GPS). The evaluation was a success, and the results indicate that GPS control is feasible and approaching the desired goals of guidance and profile control with the use of three dimensional design models. Further enhancements are needed in the physical features of the slipform paver oil system controls and in the computer program for controlling elevation.

State Library of Iowa Library Services and Technology Act Five-Year Plan, 2002

The Iowa Commission of Libraries, the State Library’s governing board, convened the Library Services Task Force in August 2000. This group consisted of 46 Iowans from across the state, including librarians from all types of libraries, library trustees, legislators, members of Iowa Regional Library system (now called Library Service Areas) and Area Education Agencies, and citizens. Their mission was to make recommendations to the Commission on positioning libraries to effectively and efficiently meet the future needs of Iowans. Needs and expectations of Iowa Library customers and funding authorities were identified and examined by the Task Force, and are reflected in its recommendations. The Commission received the Task Force recommendations in December 2000, carefully studied them, solicited input from the Iowa library community, and with a few changes, forwarded the recommendations to the Governor and the Iowa General Assembly. These recommendations are now known as Iowa Commission of Libraries priorities and serve as a blueprint for future development of the Iowa library system.

State Library of Iowa Library Services and Technology Act Five-Year Plan, 2002

The Iowa Commission of Libraries, the State Library’s governing board, convened the Library Services Task Force in August 2000. This group consisted of 46 Iowans from across the state, including librarians from all types of libraries, library trustees, legislators, members of Iowa Regional Library system (now called Library Service Areas) and Area Education Agencies, and citizens. Their mission was to make recommendations to the Commission on positioning libraries to effectively and efficiently meet the future needs of Iowans. Needs and expectations of Iowa Library customers and funding authorities were identified and examined by the Task Force, and are reflected in its recommendations. The Commission received the Task Force recommendations in December 2000, carefully studied them, solicited input from the Iowa library community, and with a few changes, forwarded the recommendations to the Governor and the Iowa General Assembly. These recommendations are now known as Iowa Commission of Libraries priorities and serve as a blueprint for future development of the Iowa library system.

LSTA Five Year Plan 2003-2007, 2007

The Iowa Commission of Libraries, the State Library’s governing board, convened the Library Services Task Force in August 2000. This group consisted of 46 Iowans from across the state, including librarians from all types of libraries, library trustees, legislators, members of Iowa Regional Library system (now called Library Service Areas) and Area Education Agencies, and citizens. Their mission was to make recommendations to the Commission on positioning libraries to effectively and efficiently meet the future needs of Iowans. Needs and expectations of Iowa Library customers and funding authorities were identified and examined by the Task Force, and are reflected in its recommendations. The Commission received the Task Force recommendations in December 2000, carefully studied them, solicited input from the Iowa library community, and with a few changes, forwarded the recommendations to the Governor and the Iowa General Assembly. These recommendations are now known as Iowa Commission of Libraries priorities and serve as a blueprint for future development of the Iowa library system. A second need assessment was conducted in 2001 as part of the process to formulate the joint Library Service Area – State Library Plan of Service 2003-2005. Biennial development of this plan is mandated by the Code of Iowa. In 2001, Library Service Area and Library Development staff from the State Library chose to completely revamp this plan, and used the process outlined in the The New Planning for Results by Sandra Nelson (the Public Library Association planning model) to do so. The group conducted a strengths/weaknesses/opportunities/threat analysis of the Iowa library situation, identified needs and put them in priority order, and identified service responses. Needs identified by the Library Services Task Force were similar to those identified by the Library Service Area and Library Development staff group. These needs were further analyzed and documented by State Library staff during the development of the LSTA plan. Sources consulted are identified in the text of the LSTA plan and/or listed at the close of this document. The text of the Library Services Task Force report and the documents created during the development of the Plan of Service 2003-2005 are cited in the appendix to this document.