2022
Authors
Almeida, F; Espinheira, E;
Publication
INFORMATICS-BASEL
Abstract
Software engineering companies have progressively incorporated agile project management methodologies. Initially, this migration occurred mostly in the context of startups, but in recent years it has also sparked interest from other companies with larger and more geographically dispersed teams. One of the frameworks used for large-scale agile implementation is the LeSS framework. This study seeks to explore how Management 3.0 principles can be applied in the context of the ten practices proposed in the LeSS framework. To this end, a qualitative research methodology based on four case studies is used to identify and explore the role of Management 3.0 in software management and development processes that adopt this agile paradigm. The findings show that the principles of Management 3.0 are relevant to the implementation of the LeSS framework practices, especially in fostering team values and personal values; however, distinct principles between the two paradigms are also identified, namely the greater rigidity of processes advocated in the LeSS framework and a greater focus on process automation.
2022
Authors
Costa, A; Rodrigues, D; Castro, M; Assis, S; Oliveira, HP;
Publication
DISPLAYS
Abstract
Lower limb amputation is a condition affecting millions of people worldwide. Patients are often prescribed with lower limb prostheses to aid their mobility, but these prostheses require frequent adjustments through an iterative and manual process, which heavily depends on patient feedback and on the prosthetist's experience. New computer-aided design and manufacturing technologies have been emerging as ways to improve the fitting process by creating virtual models of the prosthesis' interface component with the limb, the socket. Using Adversarial Autoencoders, a generative model describing both transtibial and transfemoral sockets was created. Two strategies were tested to counteract the small size of the dataset: transfer learning using the ModelNet dataset and data augmentation through a previously validated socket statistical shape model. The minimum reconstruction error was 0.00124 mm and was obtained for the model which combined the two approaches. A single-blind assessment conducted with prosthetists showed that, while generated and real shapes are distinguishable, most generated ones assume plausible shapes. Our results show that the use of transfer learning allowed for a correct training and regularization of the latent space, inducing in the model generative abilities with potential clinical applications.
2022
Authors
Petropoulos, F; Apiletti, D; Assimakopoulos, V; Babai, MZ; Barrow, DK; Ben Taieb, S; Bergmeir, C; Bessa, RJ; Bijak, J; Boylan, JE; Browell, J; Carnevale, C; Castle, JL; Cirillo, P; Clements, MP; Cordeiro, C; Oliveira, FLC; De Baets, S; Dokumentov, A; Ellison, J; Fiszeder, P; Franses, PH; Frazier, DT; Gilliland, M; Gonul, MS; Goodwin, P; Grossi, L; Grushka Cockayne, Y; Guidolin, M; Guidolin, M; Gunter, U; Guo, XJ; Guseo, R; Harvey, N; Hendry, DF; Hollyman, R; Januschowski, T; Jeon, J; Jose, VRR; Kang, YF; Koehler, AB; Kolassa, S; Kourentzes, N; Leva, S; Li, F; Litsiou, K; Makridakis, S; Martin, GM; Martinez, AB; Meeran, S; Modis, T; Nikolopoulos, K; Onkal, D; Paccagnini, A; Panagiotelis, A; Panapakidis, I; Pavia, JM; Pedio, M; Pedregal, DJ; Pinson, P; Ramos, P; Rapach, DE; Reade, JJ; Rostami Tabar, B; Rubaszek, M; Sermpinis, G; Shang, HL; Spiliotis, E; Syntetos, AA; Talagala, PD; Talagala, TS; Tashman, L; Thomakos, D; Thorarinsdottir, T; Todini, E; Arenas, JRT; Wang, XQ; Winkler, RL; Yusupova, A; Ziel, F;
Publication
INTERNATIONAL JOURNAL OF FORECASTING
Abstract
Forecasting has always been at the forefront of decision making and planning. The uncertainty that surrounds the future is both exciting and challenging, with individuals and organisations seeking to minimise risks and maximise utilities. The large number of forecasting applications calls for a diverse set of forecasting methods to tackle real-life challenges. This article provides a non-systematic review of the theory and the practice of forecasting. We provide an overview of a wide range of theoretical, state-of-the-art models, methods, principles, and approaches to prepare, produce, organise, and evaluate forecasts. We then demonstrate how such theoretical concepts are applied in a variety of real-life contexts. We do not claim that this review is an exhaustive list of methods and applications. However, we wish that our encyclopedic presentation will offer a point of reference for the rich work that has been undertaken over the last decades, with some key insights for the future of forecasting theory and practice. Given its encyclopedic nature, the intended mode of reading is non-linear. We offer cross-references to allow the readers to navigate through the various topics. We complement the theoretical concepts and applications covered by large lists of free or open-source software implementations and publicly-available databases. (C) 2021 The Author( s). Published by Elsevier B.V. on behalf of International Institute of Forecasters.
2022
Authors
Santos, G; Faia, R; Pereira, H; Pinto, T; Vale, Z;
Publication
International Conference on the European Energy Market, EEM
Abstract
The growth of renewable energy sources usage at the local level contributes to decentralizing the power and energy systems. Nowadays, there is an increment of residential consumers becoming prosumers able to consume their generation or sell it to the public grid to reduce the electricity bill. This great penetration of electricity compromises the proper functioning of the system. Local electricity markets (LEM) are market platforms aimed at electricity end-users to be able to negotiate and transact it between them, thus becoming active players in the system, being a possible solution to balance local systems. Different approaches for LEM design and implementation are proposed in the literature, usually based on community markets and peer-to-peer. Despite their value, these solutions' scalability is compromised as these are centralized solutions, and processing can become very heavy. In this sense, this work proposes a blockchain-based distributed and decentralized optimal solution for implementing LEM. © 2022 IEEE.
2022
Authors
Karas, IR; Ben Ahmed, M; Abdelhakim, AB; Dionisio, R; Santos, D; Ane, BK;
Publication
International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives
Abstract
[No abstract available]
2022
Authors
Piardi, L; Costa, P; Oliveira, A; Leitao, P;
Publication
Proceedings of the IEEE International Conference on Industrial Technology
Abstract
Industrial Cyber-Physical Systems (ICPS) deploy a network of connected and heterogeneous systems, integrating computational and physical components, improving production and quality. However, a fault-free system is still utopian, but methodologies related to fault detection and diagnosis are still being treated in isolation or a centralized approach, overlooking the technological advances related to ICPS such as IoT, AI and edge computing. With this in mind, the present work proposes a collaborative architecture for fault detection and diagnosis, regarding the exchange of information for collaborative detection and diagnosis adopting disruptive technologies. Laboratory-scale ICPS experiments were carried out to compare the proposed approach with the approach where each component separately intends to identify and diagnose faults. The results present a faster response generating a system more flexible and robust. © 2022 IEEE.
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