50 research outputs found
Study of the Usability of the WYRED Ecosystem Using Heuristic Evaluation
[EN]The WYRED ecosystem is a composition of Open Source tools and the people involved in the project, i.e., partners, stakeholders and young people between the ages of 7 and 30 years. The main component of this ecosystem is the WYRED Platform. The WYRED Platform relies on communities, which are a set of interaction spaces where conversations and research projects are developed. Every community has a person or persons in charge of its management, which are the so-called facilitators, and also a set of members, mainly young people, interacting through discussion threads. The high levels of interaction required to accomplish the WYRED Platform’s goals lead to the necessity of ensuring that the system is accepted by its final users. Given this need, a preliminary study was performed to analyze the usability of the Platform from the point of view of young people. However, it is also crucial that the ecosystem meets usability criteria for the facilitators, due to their role of encouraging young people to participate and serving as a guide in the conversations taking place within communities, as well as in the research projects developed by the young people about different topics related to the digital society. Therefore, a usability study targeting facilitators was carried out to reach insights about how these users value the system’s usability. This usability study was performed through a combination of two techniques, a heuristic analysis by experts and the Computer System Usability Questionnaire to collect the experience of the real users
Global entrainment of transcriptional systems to periodic inputs
This paper addresses the problem of giving conditions for transcriptional
systems to be globally entrained to external periodic inputs. By using
contraction theory, a powerful tool from dynamical systems theory, it is shown
that certain systems driven by external periodic signals have the property that
all solutions converge to a fixed limit cycle. General results are proved, and
the properties are verified in the specific case of some models of
transcriptional systems. The basic mathematical results needed from contraction
theory are proved in the paper, making it self-contained
Can users recall their user experience with a technology? Temporal bias and the system usability scale.
Meta Modeling for Business Process Improvement
Conducting business process improvement (BPI) initiatives is a topic of high priority for today’s companies. However, performing BPI projects has become challenging. This is due to rapidly changing customer requirements and an increase of inter-organizational business processes, which need to be considered from an end-to-end perspective. In addition, traditional BPI approaches are more and more perceived as overly complex and too resource-consuming in practice. Against this background, the paper proposes a BPI roadmap, which is an approach for systematically performing BPI projects and serves practitioners’ needs for manageable BPI methods. Based on this BPI roadmap, a domain-specific conceptual modeling method (DSMM) has been developed. The DSMM supports the efficient documentation and communication of the results that emerge during the application of the roadmap. Thus, conceptual modeling acts as a means for purposefully codifying the outcomes of a BPI project. Furthermore, a corresponding software prototype has been implemented using a meta modeling platform to assess the technical feasibility of the approach. Finally, the usability of the prototype has been empirically evaluated