Technology Acceptance Model Revisited Toward a Framework of Integrated Information Technology Evaluation Model

We propose a framework of an integrated model that can be used to quantitatively assess and compare IT products, information technologies and IT solutions. We assume that the adoption of a technology by an institute is affected by the willingness of a user to use it, the total cost to adopt it and the environmental effect of its operation. This framework, known as ACE index model or User Adoption Model (UAM), integrates the index of user acceptance, the index of total cost and the index of environmental effect. Ways to estimate these indices are outlined. Approaches to aggregating these indices are discussed along with their advantages and drawbacks.