This book constitutes the refereed proceedings of the 11th Portuguese Conference on Artificial Intelligence, EPIA 2003, held in Beja, Portugal in December 2003. The 29 revised full papers and 20 revised short papers presented were carefully reviewed and selected from a total of 119 submissions. In accordance with the five constituting workshops, the papers are organized in topical sections on artificial life and evolutionary algorithms, constraint and logic programming systems, extraction of knowledge from databases, multi-agent systems and AI for the Internet, and natural language processing and text retrieval.
Production processes and engineered systems use continuous and discrete variables, as well as the combination of continuous and sequential operations. This volume covers both aspects, thus providing knowledge in continuous and discrete control, logic control, and hybrid control systems. It is a compilation of selected control strategies to automate processes and systems with a practical approach to ease their design, analysis and implementation. The selection of the control schemes is based on the capability to provide desired dynamical response or real time performance. Practicality is required for achieving faster development times of automation projects or system prototypes by comprehensive presentation and direct application of methodologies and techniques for efficient and structured programming of control algorithms. Considered methodologies include model-based design, hardware in the loop simulations and structured programming. Fundamental signals and systems concepts are explained. Systems and controllers are analyzed using discrete-time equations, which ease their implementation in most programmable platforms without requiring sophisticated software. PID based control, internal model control and model reference control are viewed as powerful schemes in terms of performance and suitability for mechatronics systems because of the use of the model in their architecture as a key control element. Finite state machines are presented to solve sequential requirements of direct and supervisory control of many processes and machines. Cyberphysical systems are an industrial technology and an education trend, distinguished by visual and dynamic models or digital twins of the physical systems. The discussed analysis, design and implementation practices are integrated and applied in the context of cyberphysical systems. This book aims to provide multidisciplinary support to engineers and practitioners in the design of control systems, and is a valuable tool for automation teaching and self-learning.
Lula is among the greatest political figures in Brazilian history. The only president in the country with a working-class background, combined with a party that was profoundly original in its roots, he exercised charismatic power and influence in a more lasting way than any other public figure in the republican period. Since 2011, Fernando Morais, one of Brazil's leading writers, has gained direct, frank and frequent access to Lula. To these dozens of hours of testimonies, he has added a reporter's flair and captivating prose to compose a biography that paints a picture in all its grandeur and complexity. In a narrative that makes use of flashforwards and flashbacks to maintain an electrifying pace, Morais goes from Lula's childhood to the annulment of his convictions, in 2021 - passing through the new unionism, the ABC strikes, the foundation of the PT and the first election campaign.
This book constitutes the refereed proceedings of the 11th Portuguese Conference on Artificial Intelligence, EPIA 2003, held in Beja, Portugal in December 2003. The 29 revised full papers and 20 revised short papers presented were carefully reviewed and selected from a total of 119 submissions. In accordance with the five constituting workshops, the papers are organized in topical sections on artificial life and evolutionary algorithms, constraint and logic programming systems, extraction of knowledge from databases, multi-agent systems and AI for the Internet, and natural language processing and text retrieval.
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