Polymorphs of N-methyl-N-acetamide, and use of the same as a sedative-hypnotic, anxiolytic, anticonvulsant, and skeletal muscle relaxant agent. These mechanisms and methods for managing access to systems, products, or data based on information associated with a physical location of a user can enable improved data management efficiency, enhanced data management accuracy, decreased data management costs, decreased licensing costs, increased security, additional marketing opportunities, etc. The placements of the connected circuits are analyzed to derive a rectangle of connectivity. The system comprising information technology infrastructure subject to the persistent security threat is configured in accordance with the defensive strategy in order to deter the persistent security threat. The volatile function timeout value is calculated by determining the maximum of a workbook timeout value assigned to the workbook on a client computer and a server timeout value assigned to the workbook on a server computer running the spreadsheet application program. If the user credentials and the derived credentials correspond, then the processing system authenticates the user.