The simplest mathematical method to estimate tortuosity is the arc-chord ratio: the ratio of the length of the curve (L) to the distance between the ends of it (C): Arc-chord ratio equals 1 for a straight line and is infinite for a circle.
ERS is a set of computer programs set to run in a specified order on the UNISYS Mainframe at the Enterprise. Computing Center in Martinsburg, West Virginia and the Enterprise Computing Center in Memphis, (ECC-MTB and. ECC-MEM) Tennessee. All ERS information is housed on the ERS database at each computing center.
Enterprise Resource Planning System (ERP System) An enterprise resource planning system (ERP system) is an information system that incorporates enterprise-wide internal and external information systems into a single unified solution. ERP systems integrate the software, hardware and network resources essential for building an enterprise resource planning (ERP) information system solution.