The Service scenarios have a crucial role in the overall functionality of Information Systems (IS). They should be treated and examined very carefully in order to fulfill the end-user expectations and the overall platform behavior by itself. To have a qualitative scenarios it is not enough to treat only the user expectation but also these scenarios should be in compliance with legal and ethical...

Since the advent of osseointegration approximately 20 years ago, there has been a great deal of scientific data developed on two-stage integrated implant systems. Although these implants were originally designed primarily for fixed prostheses in the mandibular arch, they have been used in partially dentate patients, in patients needing overdentures, and in single-tooth restorations. In addition...

Evaluating risk early in concept design in order to inform the early trade studies is difficult due to the lack of information available at that early stage. This paper describes the approach used to perform a preliminary risk evaluation to inform the trade studies MIT and the Draper Laboratory are doing as part of the Concept Evaluation and Refinement (CE&R) activities of the new NASA Space Ex...

Since data envelopment analysis (DEA) introduced in 1970s, it has been widely applied to measure the efficiency of a wide variety of production and operation systems. Recently DEA has been extended to examine the efficiency of decision making units (DMUs) with two-stage network structures or processes, where the outputs from the first stage are intermediate measures that make up the inputs of t...

Enterprise resources planning (ERP) systems attract many attentions from industry sector because of their ability to facilitate and integrate the enterprise operations. However, many expenses accompany the implementation of these systems and consecutive changes which doing a precise and comprehensive performance evaluation a necessary part of this process. These evaluations should consider oper...