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41 GLOSSARY OF TERMS, ABBREVIATIONS, AND ACRONYMS 2D: Involving two dimensions, x, y (length, width). IDEF0 (Integrated Definition 0): Work process flowcharting 3D: Involving three dimensions, x, y, z (length, width, method. depth). Metadata: Descriptive data about sets of data, used to facili- 4D: Involving 3D model plus construction project scheduling. tate the understanding, use, and management of the data. 5D: Involving 3D model plus construction project estimate. Ontology: Data model that represents a set of concepts within 6D: Involving 3D model plus work progress data (as-built). a domain and the relationships between those concepts. It Consultant contract selection process: Flowchart mechanism is used to reason about the objects within that domain. explaining the contract selection process. PEDDS (Professional's Electronic Data Delivery System): CORS (Continuously Operating Reference Stations): Net- Software application developed by Florida DOT and used to work of global positioning system (GPS) carrier phase and sign and seal engineering documents stored electronically. code range measurements in support of 3D positioning Schema: A schematic diagram, typically hierarchical, which activities throughout the United States and its territories. represent the elements or attributes of a system. Datasets: Collections of related digital data used in a Trans- Smart jobsite: Construction sites enabled with wireless net- portation Information Model (TIM). worked hardware and software so as to have real-time DOT: Department of transportation. access and contribution to TIM data. DTM: Digital terrain model. TIM (Transportation Information Model): A multidimen- eMARS (Enhanced Management Administrative Account- sional model of a specific transportation project informa- ing Reporting System): Software application created and tion that encapsulates, shares, and archives information utilized by the Kentucky Transportation Cabinet. throughout the project life cycle. Field contacts: Flowchart explaining all the departments of a TIMS (Technical Information Management System): Docu- construction firm. ment management system developed by TIMS3 used by GIS: Geographical information system. Florida DOT. GPS: Geographical positioning system. XML (Extensible Markup Language) Schema: A way to define GUI (graphical user interface): Computer screen used to nav- the structure, content and, to some extent, the semantics of igate through and control software applications. XML documents.