OBJECTIVE To estimate from a societal perspective the cost-utility of a multidisciplinary job retention vocational rehabilitation program compared with usual care in patients with chronic rheumatic diseases at risk of job loss. METHODS Patients (n = 121) were randomly assigned to either the vocational rehabilitation program or usual outpatient care initiated by the treating rheumatologist. Fo...

Since 1997 the authors have prototyped an enterprise resource management (ERM) system recommending essential improvements to the available software packages, which today claim automatic real time performance and an efficient transaction-oriented approach. The ERM system proposed is a decision-making tool for the manufacturing industry, which makes integrated financial/production trade-off plann...

The success of a software project is strongly related with architectural design. However, designing the right Software Architecture is a very subjective task and takes a long time, being much influenced by architect’s experience and the quality of requirements engineering. A big problem emerges when the trade-off among quality requirements is not properly solved during requirements engineering....

Group and individual solutions are considered for hard problems such as satisfiability problem. Time-space trade-off in a structured active memory provides means to achieve lower time complexity for solutions of these problems.

In this paper, a green transportation location problem is considered with uncertain demand parameter. Increasing robustness influences the number of trucks for sending goods and products, caused consequently, increase the air pollution. In this paper, two green approaches are introduced which demand is the main uncertain parameter in both. These approaches are addressed to provide a trade-off b...

Most algorithms developed for scheduling applications on global Grids focus on a single Quality of Service (QoS) parameter such as execution time, cost or total data transmission time. However, if we consider more than one QoS parameter (e.g. execution cost and time, which may be in conflict) then the problem becomes more challenging. To handle such scenarios, it is convenient to use heuristics...

This paper proposes a multi-criteria approach to assess current technology systems in water treatment (WT) plants and water waste treatment (WWT) plants to find out the main implications on the quality of service. Presently, the plant production process and efficiency improvement of WWT plants has become a challenge for WWT plants. The need of cost-efficient and reliable treatment processes has...

The most important issue in multi-objective optimization problems is to determine the Pareto points along the Pareto frontier. If the optimization problem involves multiple conflicting objectives, the results obtained from the Pareto-optimality will have the trade-off solutions that shaping the Pareto frontier. Each of these solutions lies at the boundary of the Pareto frontier, such that the i...