Browsing by Issue Date, starting with "1997"
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- A imagem fidedigna e a incrível mestria de uma estrutura conceptualPublication . Santos, Luís Lima
- Neutralisation of herbicides. Effects on wall vegetationPublication . Mouga, T. M.; Almeida, M. T.The chemical control of wall vegetation growing on monuments has been stated as a suitable instrument of conservative intervention. However, often the use of herbicides has not been the most suitable, endangering either the environment or the monument in question. In particular, when dealing with limestone monuments, the chemical control has to be made very carefully because all the carbonate rocks are particularly sensitive to the weathering action of acids. Thus. to prevent this damage, two acid herbicides were neutralised with potassium hydroxide. This neutralisation did. in fact, decrease the damage caused by their acidity on the limestone. This paper deals with the effects of these neutralised herbicides on higher plants. Several experiments were made to determine whether the efficiency of the herbicides was affected. Also. the neutralisation did not affect the ability of the herbicides to eliminate the wall vegetation.
- A senhora e o rio: dois novos olhares do documentarismo em PortugalPublication . Fradique, Teresa
- Preliminary studies on enzimatic applications in the paper industryPublication . Pala, Helena; Gama, Francisco Miguel; Trancoso, D.; Amaral-Collaço, M. T.; Marques, Susana; Gírio, Francisco M.; Mota, Manuel
- A structured framework for representing time in a generative composition systemPublication . Pereira, Francisco C.; Grilo, Carlos Fernando Almeida; Macedo, Luís; Cardoso, Fernando Amílcar BandeiraThe representation of music structures is, from Musicology to Artificial Intelligence, a widely known research focus. It entails several generic Knowledge Representation problems like structured knowledge representation, time representation and causality. In this paper, we focus the problem of representing and reasoning about time in the framework of a structured music representation approach, intended to support the development of a Case-Based generative composition system. The basic idea of this system is to use Music Analysis as foundation for a generative process of composition, providing a structured and constrained way of composing novel pieces, although keeping the essential traits of the composer’s style. We propose a solution that combines a tree-like representation with a pseudo-dating scheme to provide an efficient and expressive means to deal with the problem.
- A imagem fidedigna e a incrível mestria de uma estrutura conceptualPublication . Santos, Luís Lima
- Passado recente da Escola Superior de Educação de LeiriaPublication . Pereira, José Ventura da Cruz; Tavares, José; Alarcão, Isabel; Matias, Beatriz; Ferreira, José Brites; Febra, Arnaldo
- ESEL - Construção de uma realidade: 10 anos de desenvolvimentoPublication . Escola Superior de Educação de LeiriaEsta publicação constitui um balanço, ainda que sumário, do que até agora foi possível construir, permitindo à Instituição e à Comunidade fazerem uma avaliação daquilo que hoje somos e representamos.
- Tempos de prazos - tempos de projectosPublication . Barbeiro, Luís; Marques, João Paulo dos Santos; Filipe, Alda Mourão
- Composing music with case-based reasoningPublication . Pereira, Francisco C.; Grilo, Carlos Fernando Almeida; Macedo, Luís; Cardoso, Fernando Amílcar BandeiraMusic is one of the most intriguing and joyful domain of research and analysis. Driven by this insatiable curiosity, Musical Analysis has emerged to formally understand and structure music and its intrinsic intention and causality. Each complete analysis of a piece points to issues that go far beyond the normal graphical music representation. A better analysis is important not only to a better interpretation, but also to a more perfect composition. An exceptional composer is indeed an exceptional analyst. This paper presents a computational approach to music composition through the use and exploration of musical analysis. Centered on Case-Based Reasoning and Planning techniques, it consists on creating new solutions by keeping, transforming and extrapolating knowledge from already expert-made music analysis. For our approach, each analysis is represented as a precisely structured Case, divisible into all of its components. The process of composition we adopt is progressive, left-to-right, and top-to-bottom and has some similarities with (Wallas’ 1926) theory for creative production (Macedo et al. 1996a) which we adapted for this specifically structured and complex domain. The resulting implemented program has already generated several different musical pieces, which were examined and analyzed by experts, bringing up precious questions and advice.