Learn More
In this paper, we argue that current user interface modeling tools are developed using a formalism-centric approach that does not support the needs of modern software development. In order to solve this problem we need both usable and expressive notations and tools that enable the creation of user-interface specifications that leverage the design and(More)
The increasing demand for efficiency in pork production requires great specialization of all sectors involved in this activity. In this context, the development of strategies that could reduce undesirable traits related with negative effects on piglet survival and postnatal growth and development are essential for the pig industry. Currently, special(More)
The purpose of this study was to evaluate the effect of temperature and different levels of available phosphorus (aP) on the expression of nine genes encoding electron transport chain proteins in the Longissimus dorsi (LD) muscle of pigs. Two trials were carried out using 48 high-lean growth pigs from two different growth phases: from 15 to 30 kg (phase 1)(More)
The author wishes to thank the many people who provided feedback on earlier drafts, but particularly Donald Norman for his suggestions and encouragement and my colleagues Nuno Nunes, Pedro Campos, Leonel Nóbrega, and Eduardo Fermé for their generous support and feedback. Abstract. Activity modeling is a systematic approach to organizing and representing the(More)
Many studies have analyzed general software development practices and how organizations can better support them. However, literature that qualitatively studies user-interface-related work practices in software development is relatively rare. Supporting workstyle transitions in UI practices is nonetheless important. A survey of 370 practitioners about their(More)
This paper describes a new unifying workstyle model for the user-centered design process, comprised of eight dimensions that we claim as fundamental to supporting the UCD process. Our proposal is new because it is the first workstyle model tailored to UCD. We also show the usefulness of work-style modeling when evaluating the stage/effort of a project at a(More)
Outdoor Virtual Environments (OVEs) are becoming increasingly popular, as they allow a sense of Presence in places that are inaccessible or protected from human intervention. These Virtual Environments (VEs) need to address physical modalities other than vision and hearing. We analyze the influence of four different physical modalities (vision, hearing,(More)
Existing software modeling tools are widely recognized to be hard to use and, hence, to adopt. We believe those usability problems are related to a legacy of formalism-centric tools that don't promote the new challenges of modern software development. In this short paper, we briefly describe a new tool, under development, that tries to promote usability in(More)