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作者： Slezak, J. Brno University of Technology

The paper is focused on evolutionary synthesis of analog circuit realization of cube root function using proposed Graph Hybrid Estimation of Distribution Algorithm. The problem of cube root function circuit realization was adopted to demonstrate synthesis capability of the proposed method. Individuals of the population of the proposed method which represent promising topologies are encoded using graphs and hypergraphs. Hybridization with local search algorithm was used. The proposed method employs univariate probabilistic model.

关键词： Automated analog circuit synthesis evolutionary algorithm analog circuit design estimation of distribution algorithm computational circuit univariate marginal distribution algorithm

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THE COMPLEXITY OF computational circuitS VERSUS RADIX

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IEEE TRANSACTIONS ON COMPUTERS 1980年第10期29卷 937-941页

作者： ARMSTRONG, JR Department of Electrical Engineering Virginia Polytechnic Institute and State University Abstract Authors References Cited By Keywords Metrics Similar Download Citation Email Print Request Permissions

The complexity of computational circuits versus radix is analyzed. Necessary and sufficient conditions are given that ensure that the complexity of certain computational circuits will be a monotonically decreasing function of radix. Mechanizations of a higher radix ripple carry adder, look-ahead adder, magnitude comparator, and parallel multiplier are given. Each mechanization is implemented using both I2L threshold logic and standard multiple-valued logic primitives and then tested against the necessary and sufficient conditions previously developed. A comparison is made of the relative effectiveness of I2L threshold logic versus logic primitives in realizing computational circuits whose complexity is a decreasing function of radix.

关键词： Arithmetic circuits I complexity computational circuit higher radix design multiple-valued (multivalued) logic

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Improved Linearity CMOS Differential Structure Using computational circuits

Improved Linearity CMOS Differential Structure Using Computa...

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10th International Symposium on Signals, circuits and Systems (ISSCS)

作者： Popa, Cosmin Univ Politehn Bucuresti Fac Elect Telecommun & Informat Technol Bucharest Romania

ISBN: (纸本)9781457702013

An original differential transconductance structure using exclusively MOS active devices biased in saturation region will be further presented. Performing the great advantage of a good linearity, obtained by a proper current biasing of the differential core using computational circuits, the proposed structure is designed for low-voltage low-power operation. The estimated linearity is obtained for an extended range of the differential input voltage. The frequency response of the new differential structure is strongly increased by operating all MOS devices in the saturation region. The circuit is implemented in 0.35 mu m CMOS technology, SPICE simulations confirming the theoretical estimated results.

关键词： CMOS integrated circuits CMOS integrated circuits CMOS technology CMOS technology Differential amplifiers Linearity MOS active device MOSFETs SPICE SPICE simulation Semiconductor device modeling Transconductance computational circuit current biasing differential core differential transconductance structure frequency response linearity CMOS differential structure

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Components get smarter

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NUCLEAR ENGINEERING INTERNATIONAL 2003年第593期48卷 42-45页

作者： Bridges, M Kelly, MW EPRI 3412 Hillview Avenue Palo Alto California 94304 USA

The extension of current operating licences for nuclear power plants andforecasts for new plant construction in the foreseeable future create an opportunity for the designand manufacture of components with the appropriate instrumentation for meaningful condition andperformance monitoring. The inclusion of the concept of a 'self-monitoring' component in the designphase can also push the development of computer modelling to allow the information from themonitorirfg instrumentation to be processed by computational circuits. To date, relatively littleadvancement has been made in integrating instrumentation, sensors, monitoring, and controls toprovide periodic estimates of material degradation capable of predicting the need for refurbishmentand replacement of components. Components with such integrated equipment can considerably reduceoperation and maintenance (O&M) costs while improving reliability, availability and safety. 'Smart'component technologies can predict system performance and remaining useful life with highconfidence, based on various predictive maintenance technologies that use current and projectedconditions of critical components and subsystems to predict their state of health. The capability toassess risk versus benefit of delaying maintenance tasks results in overhaul and repair beingperformed only when necessary. The primary objective of the smart component project is to assesscurrent technologies and identify what subsequent tasks will be required.

关键词： Nuclear powerplants System performance degradation of materials design phases Renewal Health Status Crucial components computational circuit integrated equipment remaining service life Modernization

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