Once information is loaded into a spreadsheet, it acquires properties that it may not deserve. These properties include believability, correctness, appropriateness, concreteness, integrity, tangibility, objectivity and authority. The information becomes reified. We describe a case study through which we were able to observe at close hand the reification of a demonstrably incorrect and inappropr...

Reinforced concrete (RC) slabs exhibit complexities in their structural behavior under load due to the composite nature of the material and the multitude and variety of factors that affect such behavior. Current methods for determining the load-deflection behavior of reinforced concrete slabs are limited in scope and are mostly dependable on the results of experimental tests. In this study, an ...

Calc/Cream is a constraint programming system with a spreadsheet front-end implemented on OpenOffice.org Calc and Java language. Constraint problems are described by users as cell expressions on a spreadsheet, and solutions are searched by the constraint solver and shown as cell values by the system. It is also possible to use Basic macros to customize the system.