Search results for "User design"
showing 2 items of 2 documents
Challenging Challenge: The Ambivalent Impact of Challenge on Intrinsic Motivation Effectiveness in Digital Co-Creation
2017
While most literature on co-creation shows a consistently positive impact of challenge on motivational processes, the authors of this study examine situational ambiguous effects. Consequently, the exalted status of challenge in practice and research is called into question. This research combines psychological needs inferred from Self-Determination Theory with challenge derived from Flow Theory to explore direct and interactive effects on motivation and participation in digital co-creation. As an example of concrete consumer innovation the authors applied the concept of Threadless in order to test propositions for co-creation settings. Threadless is a real online platform that calls up for …
Dense jet modelling applied to the design of dense effluent diffusers
2004
A model aimed at predicting the behavior of inclined dense jets in a stagnant environment was proposed. The model takes into account four jet parameters (flow rate, density, inclination and diameter) and results in a set of algebraic and ordinary differential equations, which are easily solved by simple (standard) numerical methods. Model results include information on the trajectory, spreading and dilution of the inclined dense jets. Model predictions were compared with experimental data obtained with different nozzle diameters, jet flow rates, jet densities and nozzle inclinations. Despite the wide range encompassed by the experimental data analyzed, model predictions were always found to…