Design of a diagnostic technique used in an intelligent support system for artificial heart control is presented. Parameters which may cause abnormal variables of the recipient of artificial hearts are searched with t...
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ISBN:
(纸本)0780307852
Design of a diagnostic technique used in an intelligent support system for artificial heart control is presented. Parameters which may cause abnormal variables of the recipient of artificial hearts are searched with the use of a large dynamic model Human. The advantage of this technique is that candidates of abnormal parameters can be pointed out avoiding real-time parameter estimation whose results would be unreliable for the large scale model.
In this paper, we introduce a model for developing applications with fault-tolerance requirements and real-time constraints. Applications in this model are specified using computation graphs, in which vertices represe...
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Design of a diagnostic technique used in an intelligent support system for artificial heart control is presented. Parameters which may cause abnormal variables of the recipient of artificial hearts are searched with t...
详细信息
Design of a diagnostic technique used in an intelligent support system for artificial heart control is presented. Parameters which may cause abnormal variables of the recipient of artificial hearts are searched with the use of a large dynamic model Human. The advantage of this technique is that candidates of abnormal parameters can be pointed out avoiding real-time parameter estimation whose results would be unreliable for the large scale model.
A model is given for developing application with fault-tolerance requirements and real-time constraints. Applications in this model are specified using computation graphs, in which vertices represent tasks and arcs re...
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A model is given for developing application with fault-tolerance requirements and real-time constraints. Applications in this model are specified using computation graphs, in which vertices represent tasks and arcs represent precedence constraints. Tasks are replicated to provide required fault tolerance and ensure that a real-time application will meet its deadlines despite failures. The authors develop an analytical model to calculate the probability of successful execution of applications with task replications. They propose an efficient algorithm for the analysis of applications that are composed of subgraphs, each of which has a single source and a single sink. The results of the analysis can be used with information from allocation/scheduling to develop applications with desired timing and fault-tolerance requirements.< >
The authors present a testable design to test pattern sensitive faults efficiently for semiconductor random access memories to reduce test time and hence test cost. Testability was achieved by including additional har...
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The authors present a testable design to test pattern sensitive faults efficiently for semiconductor random access memories to reduce test time and hence test cost. Testability was achieved by including additional hardware. The additional hardware is composed of a special mode counter, an error checker, a modified column decoder, and one extra control pinout. The functional test procedure proposed is of length 512 (1+n/sup 1/2/) read and write operations for an n cell memory, and covers stuck-at, transition, coupling, and nine-cell neighborhood pattern sensitive faults. This design has an estimated overhead of 5% chip area and one additional pinout.< >
A novel approach to obstacle detection using optical flow without recovering range information has been developed. This method can be used for ground vehicles to navigate through man-made roadways or natural outdoor t...
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Static characteristics of a levitational mechanism are studied. The levitational mechanism consists of a high-T(c) superconductor tile (type-II superconductor) and a magnet arrangement of the same size bar magnets wit...
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Static characteristics of a levitational mechanism are studied. The levitational mechanism consists of a high-T(c) superconductor tile (type-II superconductor) and a magnet arrangement of the same size bar magnets with alternating magnetic pole pattern. The levitation pressures have hysteresis loops because of the flux pinning effect. By using the alternating pole pattern of magnets larger static levitation pressure in proportion to the arrangement can be obtained over a wide area. Moreover the levitation pressure can be optimized with respect to the width of a bar magnet of the alternating pole pattern.
Drag pressures of a levitation mechanism are investigated. The levitation mechanism consists of a high-T(c) superconductor tile (type II superconductor) and a set of alternating-polarity bar magnets of the same size. ...
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Drag pressures of a levitation mechanism are investigated. The levitation mechanism consists of a high-T(c) superconductor tile (type II superconductor) and a set of alternating-polarity bar magnets of the same size. Relationships of the drag pressure to the distance between the magnets and the superconductor tile and to the width of a bar magnet are investigated. The drag pressure becomes small rapidly with increasing distance. The drag pressure becomes large with the superconductor-magnets distance decreasing. If the distance is fixed there exist a width of a bar magnet providing a maximum drag pressure. The drag pressure is also measured when the superconductor is moved in the direction of the alternating polarity.
The performance of the end-to-end sliding window flow control mechanism on a single virtual circuit in the high-speed, wide-area network environment is investigated. The propagation delay is taken into consideration a...
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The performance of the end-to-end sliding window flow control mechanism on a single virtual circuit in the high-speed, wide-area network environment is investigated. The propagation delay is taken into consideration as the dominant delay in the analysis of the sliding window flow control mechanism. A closed queuing network is used to model a single virtual circuit in high-speed networks. Three different approaches are adopted which give similar results. By the influence of propagation delay, the optimal window size which maximizes the network power no longer depends on the number of nodes only, but also depends on the ratio of propagation delay to switch processing delay. The results show that the optimal window size still can be represented as a simple function of network parameters. These results are validated by simulation.< >
Using the concept of fuzzy mathematics, the authors developed an automated visual inspection system to detect dimple defects of polished wafer surfaces. The algorithm consists of two major processing phases. At the fi...
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Using the concept of fuzzy mathematics, the authors developed an automated visual inspection system to detect dimple defects of polished wafer surfaces. The algorithm consists of two major processing phases. At the first phase, pre-processing is performed to eliminate noise and to reduce the number of potential candidates of dimple defects. At the second phase, four pattern features are defined based on the consideration of scale-, position-, and orientation-invariant. A fuzzy membership function is utilized to cope with the wide range of shape variations of the dimple defects. A decision-making mechanism is based on the value of the membership function which describes the pattern's closeness to a dimple. The attractive features of the system include the fact that the algorithm is distortion-invariant. Experimental results are presented.< >
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