High Performance Computing
Mostrando 1-12 de 85 artigos, teses e dissertações.
-
1. PROGRAMAÇÃO GENÉTICA, REDES NEURAIS ARTIFICIAIS E TÉCNICAS DE BALANCEAMENTO NA MODELAGEM DE DADOS AGRÍCOLAS: ESTUDO DA DOENÇA MOFO BRANCO
Data regression problems are common in the literature, therein it is desired to infer the relationship between the dependent (output) and independent variable (input) from a dataset. Infer the relationship between variables is not a simple task, many times there is a high non-linearity and noise in the data inside them. Two machine learning techniques that a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/08/2012
-
2. ESTRATÉGIAS PARALELAS INTELIGENTES PARA O MÉTODO BRANCH-AND-BOUND APLICADAS AO PROBLEMA DO CAIXEIRO VIAJANTE ASSIMÉTRICO / PARALLEL STRATEGIES FOR INTELLIGENT METHOD BRANCH-AND-BOUND TO APPLY traveling salesman problem ASYMMETRICAL
To the use of different architectures to process distinct portions of the same code, in order to maximize the performance, it is given the name Heterogeneous Computing. The Heterogeneous Computing is closely related to the high performance computing, and raised in a moment when the parallel computers, in that time with homogeneous execution, could no longer
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/07/2012
-
3. Estimação e previsão da estrutura a termo das taxas de juros usando técnicas de inteligência computacional / Term structure of interest rate modeling and forecasting using computational intelligence techniques
This work proposes the term structure of interest rates modeling and forecasting using computational intelligence techniques, based on data from the US and Brazilian fixed income markets. The yield curve modeling includes the use of some evolutionary computation methods like Genetic Algorithms, Differential Evolution and Evolution Strategies in comparison wi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/06/2012
-
4. Estudo exploratório sobre fontes de os jitter no kernel linux
The OS Jitter phenomenon has been considered an important factor in high-performance distributed computing. In this thesis, we present the results of an experimental study that quantifies the effects of different sources of OS Jitter in the Linux operating system. We use the DOE method to conduct controlled experiments statistically planned. Differently than
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/06/2012
-
5. Architecture for generic detection of machine code injection in computer networks
Since the creation of public exploitation frameworks, advanced payloads are used in computer attacks. The attacks generally employ evasion techniques, have anti-forensics capabilities, and use target machines as pivots to reach other machines in the network. The attacks also use polymorphic malicious code that automatically transforms themselves in semantica
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/06/2012
-
6. FReMI: a middleware to handle molecular docking simulations of fully-flexible receptor models in HPC environments
Molecular docking simulations of Fully-Flexible Protein Receptor (FFR) models are coming of age. However, they are computer intensive and their sequential execution can became an unfeasible task. This study presents a middleware, called Flexible Receptor Middleware (FReMI), to assist in faster docking simulations of flexible receptors. FReMI handles intensiv
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/04/2012
-
7. Desenvolvimento de um simulador para espectrometria por fluorescência de raios X usando computação distribuída / Development of a X-ray fluorescence spectrometry simulator using distributed computing
Radiation Physics is a branch of Physics that is present in various studying areas and relates to the concept of spectrometry. Among the numerous existing spectrometry techniques, there is the X-ray fluorescence spectrometry. It also has a range of variations which can emphasize a particular subset of techniques. The production of X-ray fluorescence enables
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/03/2012
-
8. 4iPay : modelo para sistemas de pagamento móvel em comércio ubíquo
This work aims at presenting a usability and architectural model for a mobile payment system. In our model, we assume independence of devices, of location, of mobile operator, and of administrator, to allow all kinds of payment in ubiquitous environments (Ubiquitous Commerce). In this work, we begin describing motivation, goals, and fundamental concepts, in
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
-
9. Exploiting multiple levels of parallelism and online refinement of unstructured meshes in atmospheric model application
Previsões meteorológicas para longos períodos de tempo estão se tornando cada vez mais importantes. A preocupação mundial com as consequências da mudança do clima tem estimulado pesquisas para determinar o seu comportamento nas próximas décadas. Ao mesmo tempo, os passos necessários para definir uma melhor modelagem e simulação do clima e/ou tem
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
-
10. AvaliaÃÃo de Desempenho de uma Plataforma de Componentes Paralelos / Performance Evaluation of a Platform for Component-Based Parallel Programming
Reduzir a complexidade do software e permitir o desenvolvimento em larga escala de aplicaÃÃes voltados à ComputaÃÃo de Alto Desempenho (CAD) tem exigido o desenvolvimento de ferramentas com potencial capacidade de abstraÃÃo na construÃÃo de sistemas. As tecnologias que envolvem o desenvolvimento de componentes procuram alcanÃar esses requisitos, bu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/10/2011
-
11. Turbulência em cosmologia: análise de dados simulados e observacionais usando computação de alto desempenho / Turbulence in cosmology: analysis of simulated and observational data using high performance computing
Recent results from the study of the Large-Scale Structure evolution suggest that the process of structure formation may have similarities with the dynamics of a turbulent fluid. The scaling law for the energy distribution in a turbulent fluid shows an inertial range of power -5/3, known as the Kolmogorov s law. This thesis presents an evaluation of the grav
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/05/2011
-
12. DECISION SUPPORT SYSTEM FOR USE IN AGRIBUSINESS (SADA): TELEMETRY AND DATA PROCESSING PERFORMANCE OF MACHINE HARVEST / SISTEMA DE APOIO À DECISÃO PARA UTILIZAÇÃO NO AGRONEGÓCIO (SADA): TELEMETRIA E TRATAMENTO DE DADOS DE DESEMPENHO DE MÁQUINA DE COLHEITA
To obtain higher profitability in farms, it is essential to proper management of the operations performed, caused by concern over the operational cost of the machines used, which represents a high percentage compared to total costs of operation and can be up to forty percent. This cost can be reduced if the use of machinery is optimized, improving performanc
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/03/2011