In this paper, we present WOAD, a framework that was inspired and partly validated within a two-year observational case study at a major teaching hospital. We present the WOAD framework by stating its main and motivating rationales, outlining its high-level architecture and then introducing its denotational language, LWOAD. We propose LWOAD to support users of an electronic document system in d...

In the Information Society, end-users keep increasing very fast in number, as well as in their demand with respect to the activities they would like to perform with computer environments, without being obliged to become computer specialists. There is a great request to provide end-users with powerful and flexible environments, tailorable to the culture, skills and needs of a very diverse end-us...

In IoT domain, communities of domain experts, having different skills in specific areas of endeavor, need an effective and easy-to-use strategy for managing physical devices and their data streams. Specifically, in this paper we are interested in discussing a sociotechnical study aimed at designing an IoT ecosystem to be used by non-professional sport teams. Nowadays, coaches and trainers want ...

Non-negative matrix factorization (NMF) aims at finding nonnegative representations of nonnegative data. Among different NMF algorithms, alternating direction method of multipliers (ADMM) is a popular one with superior performance. However, we find that ADMM shows instability and inferior performance on real-world data like speech signals. In this paper, to solve this problem, we develop a clas...

In the Information Society, end-users keep increasing very fast in number, as well as in their demand with respect to the activities they would like to perform with computer environments, without being obliged to become computer specialists. There is a strong request of providing end-users with powerful and flexible environments, tailorable to the culture, skills and needs of very diverse end-u...

Rephrasing Silberman et al. [7], we believe “sustainability is a LEARNING process, not an endpoint”. To support that, we bring the concept of coauthoring system development to promote what Knowles et al. [4] called ‘spread the word’ of sustainability. Such concept states educators should be system’s co-designers to define the information to be used by the system’s final users. The concept is su...

IMRT treatment planning via biological objectives gives rise to constrained nonlinear optimization problems. We consider formulations with nonlinear objectives based on the equivalent uniform dose (EUD), with bound constraints on the beamlet weights, and describe fast, flexible variants of the two-metric gradient-projection approach for solving them efficiently and in a mathematically sound man...

BACKGROUND To establish a generalized equivalent uniform dose (gEUD) -based prescription method for Image Guided Brachytherapy (IGBT) that reproduces the Gyn GEC-ESTRO WG (GGE) prescription for cervix carcinoma patients on CT images with limited soft tissue resolution. METHODS The equivalence of two IGBT planning approaches was investigated in 20 patients who received external beam radiothera...

This paper illustrates our approach to enhance the visit experience of archeological parks. It exploits composition technologies, End-User Development and participatory design approaches, in order to allow different stakeholders to create, use and share Personal Information Spaces. Heterogeneous content can be combined and manipulated to satisfy different information needs, thus enabling person...