A System Development Life Cycle for Persuasive Design for Sustainability

The impact of a system development lifecycle (SDLC) often determines the success of a project from analysis to evolution. Although SDLC can be universally used design projects, a focused SDLC for a specific complex design issue could be valuable for understanding diverse user needs. The importance of sustainability elevation using a persuasive system is not new. Previous research presented frameworks and design principles for persuasive system design for sustainability, while an SDLC of sustainable system development also exists. However, at present no SDLC for persuasive design aiming for sustainability is evident, which was proposed in this paper. An existing sustainable SDLC established earlier by the authors was taken as the reference framework. A cognitive model with established persuasive design principles was then analyzed and mapped within the context of the reference framework to come up with the resulting life cycle. Finally, extensive discussions and future work possibilities were given

Economic valuation of preventing beach erosion: comparing existing and non-existing beach markets with stated and revealed preferences

Altres ajuts: CSO2013-42513-PPredicted climate change is likely to increase beach erosion in the future, inducing higher costs of beach maintenance. Hence, additional funds for their protection will be required. We examine the willingness to pay (WTP) of beach visitors for preventing beach erosion in the form of daily beach entrance fees in Crikvenica, Croatia, by applying the contingent valuation method. This is the first beach valuation study for this country in transition which has emerged as an important Mediterranean tourist destination. The novelty of our study is that it compares WTP estimates for an existing and a non-existing beach market. This is done by conducting a survey at the beach where an entrance fee is already levied and at the nearest open-access beach. Based on the initial (follow-up) valuation question the stated WTP per adult per day for avoiding beach erosion equals €1.69 (€1.26) for the paid beach and €2.08 (€1.84) for the free beach. In addition, the travel cost method is employed. It reveals that consumer surpluses for visiting the paid and the free beach amount to €2.57 and €1.74, respectively