Hard Real Time Systems
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. A time-domain finite element model reduction method for viscoelastic linear and nonlinear systems
AbstractMany authors have shown that the effective design of viscoelastic systems can be conveniently carried out by using modern mathematical models to represent the frequency- and temperature-dependent behavior of viscoelastic materials. However, in the quest for design procedures of real-word engineering structures, the large number of exact evaluations o
Lat. Am. j. solids struct.. Publicado em: 2015-06
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2. Annotating data to support decision-making: a case study.
Georeferenced data are a key factor in many decision-making systems. However, their interpretation is user and context dependent so that, for each situation, data analysts have to interpret them, a time-consuming task. One approach to alleviate this task, is the use of semantic annotations to store the produced information. Annotating data is however hard to
WORKSHOP ON GEOGRAPHIC INFORMATION RETRIEVAL. Publicado em: 2011
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3. A new architectural approach for interoperability of real-time system components.
Interoperability is a key property of distributed applications, which is hard to achieve due to the large number of interoperating components and semantic heterogeneity. Distributed Real-Time Systems (RTS) have strict requirements of performance. The interoperability of Distributed RTS components challenges the computer engineering community to fulfill these
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/03/2010
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4. A new architectural approach for interoperability of real-time system components.
Interoperability is a key property of distributed applications, which is hard to achieve due to the large number of interoperating components and semantic heterogeneity. Distributed Real-Time Systems (RTS) have strict requirements of performance. The interoperability of Distributed RTS components challenges the computer engineering community to fulfill these
Publicado em: 2010
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5. Software synthesis for energy-constrained hard real-time embedded systems
A grande expansão do mercado de dispositivos digitais tem forçado empresas desenvolvedoras de sistemas embarcados em lidar com diversos desafios para prover sistemas complexos nesse nicho de mercado. Um dos desafios prominentes está relacionado ao consumo de energia, principalmente, devido aos seguintes fatores: (i) mobilidade; (ii) problemas ambientais;
Publicado em: 2009
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6. Dynamic loading and linking native code on a real-time operating system.
This thesis presents a very efficient and simple approach to native code generation and dynamic code loading for the RTOS RTEMS on the Blackfin architecture. The whole solution is intended for PLCs implementing the IEC 61131-3 standard. The second part of the solution, native code loading on RTEMS, is also usable for code updates in satellite applications. F
Publicado em: 2007
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7. Modelagem endoscÃpica virtual do monitoramento de equipamentos elÃtricos de alta tensÃo
With the promulgation of the 10.847/2004 and 10.848/2004 Laws, the Brazilian Power Sector started adopting competitiveness as the main element for obtaining concessions in the electric power system transmission and generation sectors. In this sense, the power sector companies will have to strongly intensify the monitoring processes of the power system equipm
Publicado em: 2007
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8. A time Petri net based approach for software synthesis in Hard Real-Time embedded systems with multiple processors / A time Petri net based approach for software synthesis in Hard Real-Time embedded systems with multiple processors
Atualmente, sistemas embarcados sÃo ubÃquos. Em outras palavras, eles estÃo em todos os lugares. Desde utilitÃrios domÃsticos (ex: fornos microondas, refrigeradores, videocassetes, mÃquinas de fax, mÃquinas de lavar roupa, alarmes) atà equipamentos militares (ex: mÃsseis guiados, satÃlites espiÃes, sondas espaciais, aeronaves), nÃs podemos encont
Publicado em: 2006
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9. Escalonamento de tarefas periÃdicas comunicantes em Sistemas de Tempo Real
A growing number of important computing applications in society present defined behaviors according to temporal restrictions as control applications of industrial maps, air traffic, railway and electronic equipments in cars and airplanes, telecommunications, multimedia systems, etc. These applications are under temporal restrictions and are also grouped unde
Publicado em: 2004
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10. PROCESS CONTROL SYSTEMS : DEPENDABILITY AND PERFORMANCE MODELING
Today, a wide variety of computer systems are required to react automatically to various events generated by external processes and/or human operators. An important class of these process control systems, called hard real-time systems, need to respond to events under severe timing constraints expressed in terms of deadlines and earliest starting times. In ge
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/05/1997
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11. Escalonamento dinamico de tarefas periodicas e esporadicas
Nowadays, the design and implementation of Hard Real-Time(HRT) Systems can only be accomplished through a formal methodological approach. These HRT systems are based upon the fact that the quantitative temporal behaviour must be meto Otherwise, severe negative consequences may occur and be spread in the environment. Such behaviour is due to the fact that HRT
Publicado em: 1994
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12. Tecnicas de escalonamento para sistemas "hard real time" : analise e implementação
Inúmeras aplicações em automação industrial possuem severas restrições de tempo que devem ser observadas para o perfeito funcionamento do sistema. Neste trabalho é apresentado um núcleo de tempo real capaz de satisfazer as restrições de tempo de um conjunto de tarefas, com parâmetros bem determinados, através da utilização de técnicas de esca
Publicado em: 1991