Gross Errors
Mostrando 13-23 de 23 artigos, teses e dissertações.
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13. Development of software for data reconciliation of chemical and petrochemical processes / Desenvolvimento de um software para reconciliação de dados de processos quimicos e petroquimicos
The purpose of this work is the development of computational routines for conditioning chemical process data in order to represent the process behavior as reliable as possible. Reliable process description is fundamental for any control or optimization system development, since they respond to the process measurements (its description). Thus, data conditioni
Publicado em: 2003
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14. Gross errors detection of industrial data by neural network and cluster techniques
This article describes the application of a three-layer feed-forward neural network to analyze industrial plant data. To adjust mathematical models (for control or optimization purposes) from plant data, it is necessary to analyze and detect outliers and systematic errors and to remove them. The system studied is the feed preparation of an isoprene productio
Brazilian Journal of Chemical Engineering. Publicado em: 2002-12
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15. DETECÇÃO E IDENTIFICAÇÃO DE ANORMALIDADES NA ESTIMAÇÃO DINÂMICA DE ESTADO EM SISTEMAS DE POTÊNCIA / DETECTION AND IDENTIFICATION OF ANOMALIES IN POWER SYSTEM DYNAMIC STATE ESTIMATION
This work presents a comparison between the performance of dynamic and tracking estimators, in power systems operating under quasi-static conditions, concerning their characteristics of forecasting and filtering. From this comparison, a new dynamic estimator which incorporates the main advantages of the previous estimators is proposed. Also, a new scheme of
Publicado em: 1987
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16. Errors in the measurement of serum electrolytes
When compared with results obtained by the authors in a department of medicine, the values obtained by three hospital laboratories for sodium, potassium, and chloride in normal and pathological sera were found to contain gross errors. In particular, the values obtained on sera from healthy subjects had a wide range when compared with the results obtained by
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17. Can increasing carbon dioxide cause climate change?
The realistic physical functioning of the greenhouse effect is reviewed, and the role of dynamic transport and water vapor is identified. Model errors and uncertainties are quantitatively compared with the forcing due to doubling CO2, and they are shown to be too large for reliable model evaluations of climate sensitivities. The possibility of directly
The National Academy of Sciences of the USA.
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18. A DNA sequence analysis program for the Apple Macintosh.
This paper describes a new set of programs for analyzing DNA sequences using the Apple Macintosh computer, a computer ideally suited for this kind of analysis. Because of the Macintosh interface and the availability of high quality software-only speech synthesis, these programs are truly easy to use. Instead of typing in commands, the user directs the progra
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19. Saccharomyces cerevisiae chromatin-assembly factors that act during DNA replication function in the maintenance of genome stability
Some spontaneous gross chromosomal rearrangements (GCRs) seem to result from DNA-replication errors. The chromatin-assembly factor I (CAF-I) and replication-coupling assembly factor (RCAF) complexes function in chromatin assembly during DNA replication and repair and could play a role in maintaining genome stability. Inactivation of CAF-I or RCAF increas
National Academy of Sciences.
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20. An easier alternative to orthogonal regression for calculation of International Sensitivity Indexes.
AIMS--To evaluate an easier alternative method to orthogonal regression analysis for calculating International Sensitivity Indexes (ISI). METHODS--ISI for 18 reagents were estimated from reference and test reagent prothrombin times using plasma from 60 stabilised patients undergoing anticoagulation therapy and 20 normal subjects. ISI were also derived for 12
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21. Deoxyribonucleotide pools, base pairing, and sequence configuration affecting bromodeoxyuridine- and 2-aminopurine-induced mutagenesis.
Despite recent experiments showing that BrdUrd-induced mutagenesis can be independent of the level of bromouracil (BrUra) substitution [Kaufman, E.R. & Davidson, R.L. (1978) Proc. Natl. Acad. Sci. USA 75, 4982-4986; Aebersold, P.M. (1976) Mutat. Res. 36, 357-362], BrUra.G base mispairs are a major determinant of mutagenesis. We propose that the experiments c
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22. Enhanced genomic instabilities caused by deregulated microtubule dynamics and chromosome segregation: a perspective from genetic studies in mice
Aneuploidy is defined as numerical abnormalities of chromosomes and is frequently (>90%) present in solid tumors. In general, tumor cells become increasingly aneuploid with tumor progression. It has been proposed that enhanced genomic instability at least contributes significantly to, if not requires, tumor progression. Two major modes for genomic instabilit
Oxford University Press.
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23. Estimation of Haplotype Frequencies, Linkage-Disequilibrium Measures, and Combination of Haplotype Copies in Each Pool by Use of Pooled DNA Data
Inference of haplotypes is important for many genetic approaches, including the process of assigning a phenotype to a genetic region. Usually, the population frequencies of haplotypes, as well as the diplotype configuration of each subject, are estimated from a set of genotypes of the subjects in a sample from the population. We have developed an algorithm t
The American Society of Human Genetics.