Describes the structure and features of an intelligent electronic system (IES) with fourth (and elements of fifth) levels of intelligence. The IES includes a distributedsensor network (DSN) and contains: measurement ...
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Describes the structure and features of an intelligent electronic system (IES) with fourth (and elements of fifth) levels of intelligence. The IES includes a distributedsensor network (DSN) and contains: measurement and processing, and communication subsystems. The adaptive and iterative algorithms of the IES are based on two sensor defect compensation methods: calibration and prediction. The principles of compensation, the simulation of correction and measurement, and IES modeling are also described. The proposed approach has been implemented in industry.
The proceedings contain 18 papers. The special focus in this conference is on Modeling Techniques and Tools for Computer Performance Evaluation. The topics include: A performability modeling environment tool;dependabi...
ISBN:
(纸本)9783540631019
The proceedings contain 18 papers. The special focus in this conference is on Modeling Techniques and Tools for Computer Performance Evaluation. The topics include: A performability modeling environment tool;dependability evaluation and the optimization of performability;design and implementation of a network computing platform using JAVA;storage alternatives for large structured state spaces;an efficient disk-based tool for solving very large markov models;efficient transient overload tests for real-time systems;towards an analytical tool for performance modeling of ATM networks by decomposition;an embedded network simulator to support network protocols’ development;synchronized two-way voice simulation for internet phone performance analysis and evaluation;processes as language-oriented building blocks of stochastic petri nets;measurement tools and modeling techniques for evaluating WEB server performance;workload characterization of input/output intensive parallel applications;interval based workload characterization for distributedsystems;bounding the loss rates in a multistage ATM switch;simple bounds for queues fed by markovian sources and on queue length moments in fork and join queuing networks with general service times.
This paper introduces a new concept and model for building complex ATE systems. The underlying principles were discovered over several years but were driven home by the difficulty found in modernizing a legacy test sy...
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This paper introduces a new concept and model for building complex ATE systems. The underlying principles were discovered over several years but were driven home by the difficulty found in modernizing a legacy test system. The result of this effort produced a solution that provided answers to the following three questions: (1) How to achieve asset interchangeability in complex test and measurement systems, (2) How to place test system software in a modular component form that can be reused in different ATE or desk top environments, and (3) How to apply new software technologies in distributedcomputing to ATE systems.
The objective of this research was to develop a method of estimating central aortic pressure (AA) waveform from the noninvasive radial tonometry (TRA) waveform. In order to attain this goal, the Fast Fourier Transform...
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The objective of this research was to develop a method of estimating central aortic pressure (AA) waveform from the noninvasive radial tonometry (TRA) waveform. In order to attain this goal, the Fast Fourier Transform (FFT) and Auto-Regressive eXogenous (ARX) models were used to develop the transfer function (TF) between the AA (input) and TRA (output). The inverse TF was then derived to generate the AA waveform from the TRA waveform. To test the accuracy of the model, the aortic pressure waveform using a Millar catheter tip transducer and noninvasive radial artery waveform using a Colin tonometer were simultaneously obtained in 5 patients who were undergoing cardiac catheterization at Yamagata University. The inverse TF based on the FFT model did not accurately reconstruct the AA waveform. On the contrary, ARX model resulted in accurate estimate of AA with the estimation error of approximately 3% for systolic, diastolic and mean pressure levels. The noninvasive radial tonometry in combination with the ARX model may offer a potential of noninvasive estimation of aortic pressure waveform.
We address the problem of how to handle exceptions in distributed object-oriented systems. In a distributedcomputing environment exceptions may be raised simultaneously and thus need to be treated in a coordinated ma...
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ISBN:
(纸本)0818673982
We address the problem of how to handle exceptions in distributed object-oriented systems. In a distributedcomputing environment exceptions may be raised simultaneously and thus need to be treated in a coordinated manner. We take two kinds of concurrency into account: 1) several objects are designed collectively and invoked concurrently to achieve a global goal, and 2) concurrent objects or object groups that are designed independently compete for the same system resources. We propose a new distributed algorithm for resolving concurrent exceptions and show that the algorithm works correctly even in complex nested situations, and is an improvement over previous proposals in that it requires only O(N2) messages, and is fully object-oriented.
In this paper, we present a new language called ParCeL-1, dedicated to connectionist and explicitely parallel AI programming. ParCeL-1 is a language based on agents, not unlike actor languages. Its agents are autonomo...
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ISBN:
(纸本)0780333675
In this paper, we present a new language called ParCeL-1, dedicated to connectionist and explicitely parallel AI programming. ParCeL-1 is a language based on agents, not unlike actor languages. Its agents are autonomous and follow a computational model in which the communications are non-blocking and the communication scheme is explicit. ParCeL-1 has a parallel implementation and runs on several multi-processor architectures. We give an example of connectionist programming (the Kohonen map) and show several performance results on a Transputer based multi-processor architecture and on the Gray T3D parallel computer.
Many application areas require the integration of heterogeneous information sources into a coherent distributed information system. With such systems, users frequently need not only be able to access information, but ...
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The proceedings contains 72 papers. Topics discussed include theoretical issues on parallel processing, distributedcomputing, software tools for parallelism, performance analysis, scheduling and debugging, fault tole...
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The proceedings contains 72 papers. Topics discussed include theoretical issues on parallel processing, distributedcomputing, software tools for parallelism, performance analysis, scheduling and debugging, fault tolerance and security, applications in electromagnetic and neural networks, performance analysis in communications, and parallel algorithms.
The proceedings contains 76 papers. Topics discussed include complex real time and distributedsystems, complexity through the software process, design of complex systems, computer programming languages for real time ...
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The proceedings contains 76 papers. Topics discussed include complex real time and distributedsystems, complexity through the software process, design of complex systems, computer programming languages for real time systems, software and systems engineering, process control, local area networks, database systems, schedulability, online problem solving environment, formal specification and reasoning, image processing and artificial intelligence, modeling and design of complex software, object orientation, networking and communication, heterogeneous computing, fault tolerant real time systems, high performance architectures, system testing and assessment.
This paper studies properties of messages communication modes in distributedsystems. It establishes a simple, hierarchical and homogeneous characterization of logically instantaneous, causally ordered and first-in-fi...
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ISBN:
(纸本)0780320182
This paper studies properties of messages communication modes in distributedsystems. It establishes a simple, hierarchical and homogeneous characterization of logically instantaneous, causally ordered and first-in-first-out communications. It is shown that a distributed computation obeys one of the previous communication modes if a communication graph of messages does not include a cycle. This characterization plays a key role when one is interested in designing, analyzing, testing or debugging asynchronous distributed computations. This graph-based approach shows there is some unity in the characterization of deadlock, concurrency control, memory consistency and communication modes.
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