The design of commercial products that are intended to serve millions of people has been a challenge for collaborative approaches. The creation and use of fictional users, concrete representations referred to as ‘personas’, is a relatively new interaction design technique. It is not without problems and can be used inappropriately, but based on experience and analysis it has extraordinary poten...

Manufacturers are required to supply more services in addition to just material products to customers recently. A new methodology is necessary to create value by combining services and products in this context. To serve this need, we propose a new engineering discipline called Service/Product Engineering (SPE). SPE differs from traditional, primitive engineering and concurrent engineering in th...

Despite the many existing Eco-design methods and tools, their use is still limited. When they are used, these methods and tools are often not integrated in the product development process. The purpose of this research is, given a special focus on Eco-design methods and tools, to increase the knowledge concerning engineering designers’ use of methods and tools. Even though more and more approach...