Results 101 to 110 of about 6,126 (171)

Remaining Useful Life Prediction in an Aerospace Engine: A Multivariable Fuzzy Time Series Classification Approach

open access: yesExpert Systems, Volume 43, Issue 2, February 2026.
ABSTRACT Failures in safety‐critical systems such as aircraft engines pose severe economic and societal risks. This study introduces a novel Remaining Useful Life (RUL) prediction method uniquely combining diverse techniques. Specifically, the proposed methodology integrates fuzzy time series analysis with sliding window segmentation and Multinomial ...
Luiz Rogério de Freitas Júnior   +1 more
wiley   +1 more source

On degenerate multi-poly-derangement polynomials and numbers

open access: yesApplied Mathematics in Science and Engineering
The problem of counting derangements was begun in 1708 by Pierre R[Formula: see text]mond de Montmort (see [Carlitz. The number of derangements of a sequence with given specification. Fibonacci Quart. 1978;16:255–258], [Clarke and Sved.
Sang Jo Yun, Jin-Woo Park
doaj   +1 more source

The Effect of Age Diversity in Groups on Peer Evaluations and Individual Performance

open access: yesKyklos, Volume 79, Issue 1, Page 218-231, February 2026.
ABSTRACT This study analyzes how individuals evaluate their peers' performance in a high‐stakes tournament in response to being randomly assigned to an age homogenous or heterogenous group using data from two TV shows. The data also allow us to explore expert evaluations because it contains objective ratings from an independent expert.
Katja Görlitz, Tim Sels
wiley   +1 more source

Observational Requirements for Quantifying the Diurnal Cycle of XCO2 From Space

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 1, 16 January 2026.
Abstract Spatiotemporal variations in atmospheric carbon dioxide (CO2) provide a means to quantify surface fluxes of carbon over a range of space and timescales. NASA's Orbiting Carbon Observatory‐3 (OCO‐3), aboard the International Space Station, is the first CO2‐monitoring mission to observe the sunlit portion of the diurnal cycle of total column ...
G. Keppel‐Aleks   +6 more
wiley   +1 more source

Extended degenerate Stirling numbers of the second kind and extended degenerate Bell polynomials

open access: yes, 2017
In a recent work, the degenerate Stirling polynomials of the second kind were studied by T. Kim. In this paper, we investigate the extended degenerate Stirling numbers of the second kind and the extended degenerate Bell polynomials associated with them.
Kim, Taekyun, Kim, Dae San
openaire   +2 more sources

Probabilistic degenerate r-Stirling numbers of the second and probabilistic degenerate r-Bell polynomials

open access: yes
Assume that Y is a random variable whose moment generating function exists in a neighborhood of the origin. We study the probabilistic degenerate r-Stirling numbers of the second kind associated with Y and the probabilistic degenerate r-Bell polynomials ...
Kim, Dae San, Kim, Taekyunj
core  

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