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Publications

2019

A service design approach to healthcare innovation: from decision-making to sense-making and institutional change

Authors
Patrício L.; Grenha Teixeira J.; Vink J.;

Publication
Ams Review

Abstract
Healthcare is facing complex challenges that demand profound service system innovation. Service design offers an opportunity to move beyond explanatory research and take an action-oriented approach that combines research rigor with relevance to foster innovation in healthcare. We present three research projects that illustrate different ways service design can enable health service system innovation to create uplifting changes in wellbeing. The first research project utilizes a decision-making approach to support design teams in developing value co-creating technology-enabled services for skin cancer prevention. The second project employs a sense-making approach through participatory design to develop a National Electronic Health Record that addresses the multiple and conflicting goals of healthcare network actors. The third project uses an institutional change approach to develop a new digital service for youth with mental health issues while simultaneously shifting the culture of the clinic toward people-centered care through participatory service design. We conclude with research directions to leverage the potential of service design for healthcare innovation, including strengthening the dialogue between explanatory and design research, exploring new multidisciplinary collaborations and integrating multiple research methods.

2019

Contract design of direct-load control programs and their optimal management by genetic algorithm

Authors
Lujano Rojas, JM; Zubi, G; Dufo Lopez, R; Bernal Agustin, JL; Garcia Paricio, E; Cataldo, JPS;

Publication
ENERGY

Abstract
A computational model for designing direct-load control (DLC) demand response (DR) contracts is presented in this paper. The critical and controllable loads are identified in each node of the distribution system (DS). Critical loads have to be supplied as demanded by users, while the controllable loads can be connected during a determined time interval. The time interval at which each controllable load can be supplied is determined by means of a contract or compromise established between the utility operator and the corresponding consumers of each node of the DS. This approach allows us to reduce the negative impact of the DLC program on consumers' lifestyles. Using daily forecasting of wind speed and power, solar radiation and temperature, the optimal allocation of DR resources is determined by solving an optimization problem through a genetic algorithm where the energy content of conventional power generation and battery discharging energy are minimized. The proposed approach was illustrated by analyzing a system located in the Virgin Islands. Capabilities and characteristics of the proposed method in daily and annual terms are fully discussed, as well as the influence of forecasting errors.

2019

An Hierarchical Architecture for Docking Autonomous Surface Vehicles

Authors
Leite, P; Silva, R; Matos, A; Pinto, AM;

Publication
2019 19TH IEEE INTERNATIONAL CONFERENCE ON AUTONOMOUS ROBOT SYSTEMS AND COMPETITIONS (ICARSC 2019)

Abstract
Autonomous Surface Vehicles (ASVs) provide the ideal platform to further explore the many opportunities in the cargo shipping industry, by making it more profitable and safer. This paper presents an architecture for the autonomous docking operation, formed by two stages: a maneuver module and, a situational awareness system to detect a mooring facility where an ASV can safely dock. Information retrieved from a 3D LIDAR, IMU and GPS are combined to extract the geometric features of the floating platform and to estimate the relative positioning and orientation of the moor to the ASV. Then, the maneuver module plans a trajectory to a specific position and guarantees that the ASV will not collide with the mooring facility. The approach presented in this paper was validated in distinct environmental and weather conditions such as tidal waves and wind. The results demonstrate the ability of the proposed architecture for detecting the docking platform and safely conduct the navigation towards it, achieving errors up to 0.107 m in position and 6.58 degrees in orientation.

2019

Proceedings Twelfth Workshop on Developments in Computational Models and Ninth Workshop on Intersection Types and Related Systems, DCM/ITRS 2018, Oxford, UK, 8th July 2018

Authors
Pagani, M; Alves, S;

Publication
DCM/ITRS

Abstract

2019

A Data Visualization Approach for Intersection Analysis using AIS Data

Authors
Pereira, R; Abreu, P; Polisciuc, E; Machado, P;

Publication
PROCEEDINGS OF THE 14TH INTERNATIONAL JOINT CONFERENCE ON COMPUTER VISION, IMAGING AND COMPUTER GRAPHICS THEORY AND APPLICATIONS - VOL 3: IVAPP

Abstract
Automatic Identification System data has been used in several studies with different directions like traffic forecasting, pollution control or anomalous behavior detection in vessels trajectories. Considering this last subject, the intersection between vessels is often related with abnormal behaviors, but this topic has not been exploited yet. In this paper an approach to assist the domain experts in the task of analyzing these intersections is introduced, based on data processing and visualization. The work was experimented with a proprietary dataset that covers the Portuguese maritime zone, containing an average of 6460 intersections by day. The results show that several intersections were only noticeable with the visualization strategies here proposed.

2019

Adventures in Hologram Space: Exploring the Design Space of Eye-to-eye Volumetric Telepresence

Authors
dos Anjos, RK; Sousa, M; Mendes, D; Medeiros, D; Billinghurst, M; Anslow, C; Jorge, J;

Publication
25TH ACM SYMPOSIUM ON VIRTUAL REALITY SOFTWARE AND TECHNOLOGY (VRST 2019)

Abstract
Modern volumetric projection-based telepresence approaches are capable of providing realistic full-size virtual representations of remote people. Interacting with full-size people may not be desirable due to the spatial constraints of the physical environment, application context, or display technology. However, the miniaturization of remote people is known to create an eye gaze matching problem. Eye-contact is essential to communication as it allows for people to use natural nonverbal cues and improves the sense of "being there". In this paper we discuss the design space for interacting with volumetric representations of people and present an approach for dynamically manipulating scale, orientation and the position of holograms which guarantees eye-contact. We created a working augmented reality-based prototype and validated it with 14 participants.

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