Self Tuning
Mostrando 13-24 de 30 artigos, teses e dissertações.
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13. Self-tuned vehicle parameters detection and estimation from vÃdeo sequences for traffic incident management.
This work proposes and compares three algorithms for vehicle detection, composed of two main stages, preprocess and process. The first will proceed with the selection of the region of interest (ROI) and the background learning phase. The ROI is a narrow and transversal-to-lane rectangular area wherein detection is achieved, its dimensions provides low proces
Publicado em: 2005
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14. UMA ARQUITETURA PARA AUTO-SINTONIA GLOBAL DE SGBDS USANDO AGENTES / AN AGENT-BASED ARCHITECTURE FOR DBMS GLOBAL SELF-TUNING
The increasing complexity of the commercial DBMSs as well the workload they manage, besides the fact that many users do not have deep knowledge about database administration, among other reasons, strongly suggests the introduction of techniques that automates the database tuning process. Self- Tuning, or auto-tuning, is a feature that makes systems adaptable
Publicado em: 2004
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15. CRIAÇÃO AUTÔNOMA DE ÍNDICES EM BANCOS DE DADOS / AUTONOMIC INDEX CREATION IN DATABASES
The choice and materialization of indexes are activities commonly done by database administrators to speed up database application processing. Due to the complexity of the index selection task and to the pressure for productivity increase put on tuning professionals, many works on the literature and on commercial systems seek for tools that can help the DBA
Publicado em: 2004
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16. Espectroscopia de tunelamento em sistemas nanoscopicos de transporte balistico
In this work we discuss the ballistic transport properties of non-interacting electrons in confined nanoscopic system, where the sample boundaries and a controllable impurity repulsive, such as the one induced by scanning a Atomic Force Microscope tip or using split gates technique are the only source of electron sacttering. Two quantum scenary are studied:
Publicado em: 2003
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17. State and parameter estimation based on a nonlinear filter applied to an industrial process control of ethanol production
Most advanced computer-aided control applications rely on good dynamics process models. The performance of the control system depends on the accuracy of the model used. Typically, such models are developed by conducting off-line identification experiments on the process. These experiments for identification often result in input-output data with small output
Brazilian Journal of Chemical Engineering. Publicado em: 2000-12
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18. Estudo do comportamento de fases de sistemas agua-hidrocarbonetos
Cubic equations of state have been widely used in the chemical and petroleum industry for thermodynamic property calculation. In the presence of polar substances that self-associate through hidrogen bonding (like water or alcohol), these equations are of very limited use. Some systems of industrial interest can include molecules of very different size, like
Publicado em: 1995
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19. Estudo de desempenho de controladores adaptativos para manipuladores robóticos
Neste trabalho é realizado um estudo sobre controladores adaptativos aplicados a manipuladores robóticos, dando ênfase à infuência dos seus parâmetros de projeto sobre o desempenho do sistema de controle e aos benefícios propiciados pela utilização desses controladores. Primeiramente é efetuado um resumo sobre as principais estratégias de controle
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/03/1991
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20. Balancing immunity and tolerance: deleting and tuning lymphocyte repertoires.
Immunological self-tolerance is ensured by eliminating or inhibiting self-reactive lymphocyte clones, creating physical or functional holes in the B- and T-lymphocyte antigen receptor repertoires. The nature and size of these gaps in our immune defenses must be balanced against the necessity of mounting rapid immune responses to an everchanging array of fore
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21. Forming classes by stimulus frequency: Behavior and theory
Visual classification is the way we relate to different images in our environment as if they were the same, while relating differently to other collections of stimuli (e.g., human vs. animal faces). It is still not clear, however, how the brain forms such classes, especially when introduced with new or changing environments. To isolate a perception-base
The National Academy of Sciences.
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22. Designing supramolecular porphyrin arrays that self-organize into nanoscale optical and magnetic materials
Tessellation of nine free-base porphyrins into a 3 × 3 array is accomplished by the self-assembly of 21 molecular entities of four different kinds, one central, four corner, and four side porphyrins with 12 trans Pd(II) complexes, by specifically designed and targeted intermolecular interactions. Strikingly, the self-assembly of 30 components into a metallo
The National Academy of Sciences.
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23. Heat shock proteins as mediators of aggregation-induced ‘danger’ signals: implications of the slow evolutionary fine-tuning of sequences for the antigenicity of cancer cells
Organisms ‘tune’ to their environment through adaptations which confer a selective advantage. However, in complex systems, a primary change of positive adaptive value might have multiple minor secondary effects, usually of negative adaptive value, which could invoke further counter-adaptations. This ‘fine-tuning’, a ‘debugging’, mainly at the int
Cell Stress Society International.
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24. Studies of temperature-dependent electronic transduction on DNA hairpin loop sensor
A self-assembly monolayer (SAM) of hairpin DNA can be formed on a gold substrate in order to make special biosensors. Labeling the hairpin loop probes with electroactive compositions rather than a fluorophore illustrates interesting profiles of redox current versus temperature. For a biosensor interacting with perfectly complementary targets, the profile sho
Oxford University Press.