Results 251 to 260 of about 574,927 (284)

Quadric reliability indices

Reliability Engineering, 1987
Limit state models based on multi-dimensional rotational paraboloids and hyperboloids are described, and approximate closed form solutions obtained for the associated failure probability and corresponding reliability index. The solutions presented depend only on the number of variables, minimum distance of the limit state surface from the origin and ...
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Principles of Defining Reliable Change Indices

Journal of Clinical and Experimental Neuropsychology, 2000
In this article, several salient measures for determining reliable change are scrutinized. The classic null hypothesis method is compared with more recent procedures based on interval estimation of the true change, including Kelley's formula. The latter category of methods are shown to entail serious drawbacks. If Kelley's formula is expanded to a null
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Fault indicators effects on distribution reliability indices

18th International Conference and Exhibition on Electricity Distribution (CIRED 2005), 2005
SUMMARY Reduction of failure rates and applying effective fault management can be affected in improvement of reliability indices in distribution systems. One of the ways to improving the reliability of distribution networks in fault management procedure is installing Fault Indicators (FIs) in overhead primary networks.
H. Falaghi, M.-R. Haghifam, M.R.O. Tabrizi   +2 more
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Reliability of Echocardiographic Indices of Dyssynchrony

Echocardiography, 2007
Background: Echocardiographic indices of dyssynchrony are increasingly used to select candidates for cardiac resynchronization therapy. For widespread screening of heart failure patients, such variables need to be comparable when evaluated by different operators using different equipment.
Ruvin S, Gabriel, Tapash K, Bakshi, Anthony G, Scott, Jonathan P, Christiansen, Hitesh, Patel, Selwyn P, Wong, Guy P, Armstrong   +6 more
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NVQs. Reliable indicators of competence?

Nursing older people, 2002
Most care professionals acknowledge that training for healthcare workers should improve standards of care for clients. The current emphasis is on NVQs. Manthorpe ( 2002 ) identifies training as an important component of preventing abuse within the care setting, stressing the value of using materials linked to S/NVQ in Care for the unit Z1, titled ...
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Investigating Reliabilities of Intraindividual Variability Indicators

Multivariate Behavioral Research, 2012
Reliabilities of the two most widely used intraindividual variability indicators, ISD (2) and ISD, are derived analytically. Both are functions of the sizes of the first and second moments of true intraindividual variability, the size of the measurement error variance, and the number of assessments within a burst. For comparison, the reliability of the
Lijuan Peggy, Wang, Kevin J, Grimm
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Bulk system reliability-measurement and indices

IEEE Transactions on Power Systems, 1989
Methods and indices are presented for measuring the actual bulk power system reliability of individual utilities. Categories of unreliability events are identified for measurement, and locations in the bulk system where measurements can be made are suggested. Data requirements and indices calculations are discussed. The proposed measurement system uses
C. C. Fong, R. Billinton, R. O. Gunderson, P. M. O'Neill, J. Raksany, A. W. Schneider, B. Silverstein   +6 more
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Weather Normalization of Reliability Indices

IEEE Transactions on Power Delivery, 2011
Weather significantly influences distribution reliability indices, especially duration benchmarks like SAIDI. We explore correlations with various weather parameters including lightning-detection network data, and wind from weather stations. This paper explores a number of ways to account for the variability caused by weather.
Heidemarie C. Caswell, Vincent J. Forte, John C. Fraser, Anil Pahwa, Tom Short, Mark Thatcher, Val G. Werner   +6 more
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Design of dynamic reliability indices

Proceedings 32nd IEEE International Symposium on Multiple- Valued Logic, 2003
The multi-state system reliability is investigated in this paper. The new class of reliability indices is obtained. We have called these indices as dynamic reliability indices. These indices estimate influence upon the multi-state system reliability by the capacity levels of a system component.
E.N. Zaitseva, V.G. Levashenko
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Reliability with wear indicator

Filtration + Separation, 2018
When a filter belt needed changing at a sewage treatment plant, it was given a GKD belt press with a wear indicator. This belt offered better performance than its predecessors and delivered by significantly increasing the plant's reliability and meeting high expectations.
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