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| Registros recuperados: 26 | |
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| Lourençoni,Dian; Yanagi Junior,Tadayuki; Abreu,Paulo G. de; Campos,Alessandro T.; Yanagi,Silvia de N. M.. |
| ABSTRACT Broiler chickens are classified as homoeothermic animals and require a production environment within well-defined thermal comfort intervals. Therefore, the development of algorithms (mathematical models) to control the environment that can be embedded in microcontrollers becomes necessary. Hence, this work aimed to develop a fuzzy model for predicting the productive performance of broiler chickens as a function of the thermal environment during the various breeding phases. The Mamdani inference and defuzzification methods were used, by means of the gravity center, to develop the fuzzy model. Two hundred and forty-three rules with weighting factors of 1.0 each were elaborated. Three commercial warehouses (conventional system, wind tunnel with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Poultry farming; Productive performance; Artificial intelligence; Fuzzy logic. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000100001 |
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| Smith, Peter. |
| Some aspects of economic systems (eg, nonlinearity, qualitative variables) are intractable when incorporated into models. The widespread practice of excluding them (or greatly limiting their role) produces deviations of unknown size and form between the resulting models and the reality they purport to represent. To explore this issue, and the extent to which a change in methodology can improve tractability, a combination of two techniques, fuzzy logic and genetic algorithms, was applied to the problem of how the sellers in a freely competitive market, if initially trading at different prices, can find their way to supply/demand equilibrium. A multi-agent model was used to simulate the evolution of autonomously- learnt rule-governed behaviour, (i), under... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Competition; Markets; Walrasian Crier; Equilibrium; Fuzzy logic; Genetic algorithms; Evolutionary algorithms; Industrial Organization. |
| Ano: 2004 |
URL: http://purl.umn.edu/30569 |
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| Trautmann,Ana P. B.; Silva,José A. G. da; Binelo,Manuel O.; Valdiero,Antonio C.; Henrichsen,Luana; Basso,Natiane C. F.. |
| ABSTRACT Fuzzy logic can simulate wheat productivity by assisting crop predictability. The objective of the study is the use of fuzzy logic to simulate wheat yield in the conditions of nitrogen use, together with the effects of air temperature and rainfall, in the main cereal succession systems in Southern Brazil. The study was conducted in the years 2014, 2015 and 2016, in Augusto Pestana, RS, Brazil. The experimental design was a randomized block design with four repetitions in a 4 x 3 factorial scheme for N-fertilizer doses (0, 30, 60, 120 kg ha-1) and nutrient supply forms [100% in phenological stage V3 (third expanded leaf); (70%/30%) in the phenological stage V3/V6 (third and sixth expanded leaf) and; fractionated (70%/30%) at the phenological stage... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum; Temperature; Precipitation; Fuzzy logic; Modeling. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000100044 |
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| Santos,Railton O. dos; Franco,Laís B.; Silva,Samuel A.; Sodré,George A.; Menezes,Agna A.. |
| ABSTRACT The knowledge on the spatial variability of soil properties and crops is important for decision-making on agricultural management. The objective of this study was to evaluate the spatial variability of soil fertility and its relation with cocoa yield. The study was conducted over 14 months in an area cultivated with cocoa. A sampling grid was created to study soil chemical properties and cocoa yield (stratified in season, off-season and annual). The data were analyzed using descriptive and exploratory statistics, and geostatistics. The chemical attributes were classified using fuzzy logic to generate a soil fertility map, which was correlated with maps of crop yield. The soil of the area, except for the western region, showed possibilities ranging... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Precision agriculture; Cocoa; Spatial variability; Fuzzy logic. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000200088 |
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| Delgado Caballero, Carina Edith. |
| Este estudio es una contribución a la identificación de áreas aptas para el establecimiento de plantaciones forestales comerciales (PFC) de Eucalyptus en el sureste de México. El trabajo se realizó en plantaciones establecidas por la empresa Plantaciones de Tehuantepec (PLANTEH) en el Municipio de Santiago Yaveo, Oaxaca y en un área de influencia que comprende cinco municipios del Estado de Oaxaca (San Juan Guichicovi, Santiago Yaveo, San Juan Cotzocón, San Juan Mazatlán y Matías Romero) y siete en el Estado de Veracruz (Playa Vicente, Juan Rodríguez Clara, Santiago Sochiapan, San Juan Evangelista, Sayula de Alemán, Texistepec y Jesús Carranza). La identificación de áreas aptas se realizó considerando los requerimientos ecológicos de las especies mediante... |
| Tipo: Tesis |
Palavras-chave: Eucalyptus; Evaluación multicriterio; Proceso de Análisis Jerarquizado (AHP); Lógica Fuzzy; Índice de Sitio; Maestría; Forestal; Multicriteria Evaluation; Analytic Hierarchy Process (AHP); Fuzzy logic; Site Index. |
| Ano: 2007 |
URL: http://hdl.handle.net/10521/1676 |
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| Registros recuperados: 26 | |
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