Articles with "frequency analysis" as a keyword



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Modeling and frequency analysis of beam with breathing crack

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Published in 2018 at "Archive of Applied Mechanics"

DOI: 10.1007/s00419-018-1400-z

Abstract: In this paper, a general formulation for beam with a desired shape of breathing crack is presented. The difference of the presented modeling with previous works is that the crack’s parameters such as depth, location,… read more here.

Keywords: frequency analysis; breathing crack; beam; crack ... See more keywords
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On seasonal and semi-annual approach for flood frequency analysis

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Published in 2017 at "Stochastic Environmental Research and Risk Assessment"

DOI: 10.1007/s00477-017-1427-7

Abstract: As a supplementary method to the conventional flood frequency analysis based on annual peak flows, we propose an approach in this paper to infer the flood frequency distribution on quarterly and semi-annual time scale, which… read more here.

Keywords: frequency analysis; semi annual; flood frequency;
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Application of distribution-free nonstationary regional frequency analysis based on L-moments

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Published in 2017 at "Theoretical and Applied Climatology"

DOI: 10.1007/s00704-017-2249-8

Abstract: Regional frequency analysis (RFA) based on L-moments is widely used in the analysis of hydrological process. However, L-moments are defined by order statistics from a stationary distribution and thus theoretically good properties of RFA do… read more here.

Keywords: distribution free; regional frequency; frequency analysis; based moments ... See more keywords
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Flood Frequency Analysis Using L Moments: a Comparison between At-Site and Regional Approach

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Published in 2019 at "Water Resources Management"

DOI: 10.1007/s11269-018-2162-7

Abstract: Regional flood frequency analysis has been carried out for estimating peak discharge at regional level over the Kerala State, India, along with at-site flood frequency analysis. For the study, the annual peak discharges of 43… read more here.

Keywords: frequency; frequency analysis; site; flood frequency ... See more keywords
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Flood Frequency Analysis of Interconnected Rivers by Copulas

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Published in 2020 at "Water Resources Management"

DOI: 10.1007/s11269-020-02634-0

Abstract: Flood frequency analysis (FFA) considering the confluence of interconnected rivers is important for hydraulic structures (such as dams or diversions) design, but it has received little attention. This study develops a copula-based method for FFA… read more here.

Keywords: flood frequency; interconnected rivers; confluence; frequency analysis ... See more keywords
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A comparison of three approaches to non-stationary flood frequency analysis

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Published in 2017 at "Acta Geophysica"

DOI: 10.1007/s11600-017-0071-4

Abstract: Non-stationary flood frequency analysis (FFA) is applied to statistical analysis of seasonal flow maxima from Polish and Norwegian catchments. Three non-stationary estimation methods, namely, maximum likelihood (ML), two stage (WLS/TS) and GAMLSS (generalized additive model… read more here.

Keywords: frequency analysis; analysis; non stationary; flood frequency ... See more keywords
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Simulation Study on Multi-Rate Time-Frequency Analysis of Non-Stationary Signals

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Published in 2018 at "Journal of Shanghai Jiaotong University (Science)"

DOI: 10.1007/s12204-018-1967-0

Abstract: A new time-frequency analysis method is proposed in this study using a multi-rate signal decomposition technique for the analysis of non-stationary signals. The method uses a multi-rate filter bank for an improved non-stationary signal decomposition… read more here.

Keywords: non stationary; frequency analysis; analysis; time frequency ... See more keywords
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Natural frequency analysis of functionally graded material beams with axially varying stochastic properties

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Published in 2019 at "Applied Mathematical Modelling"

DOI: 10.1016/j.apm.2018.10.011

Abstract: Abstract The functionally graded material (FGM) has a potential to replace ordinary ones in engineering reality due to its superior thermal and dynamical characteristics. In this regard, the paper presents an effective approach for uncertain… read more here.

Keywords: axially varying; functionally graded; frequency; frequency analysis ... See more keywords
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Design of low-altitude Martian orbits using frequency analysis

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Published in 2021 at "Advances in Space Research"

DOI: 10.1016/j.asr.2020.10.032

Abstract: Abstract Nearly-circular Frozen Orbits (FOs) around axisymmetric bodies — or, quasi-circular Periodic Orbits (POs) around non-axisymmetric bodies — are of primary concern in the design of low-altitude survey missions. Here, we study very low-altitude orbits… read more here.

Keywords: low altitude; frequency analysis; altitude; altitude martian ... See more keywords
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An injected quantity estimation technique based on time–frequency analysis

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Published in 2021 at "Control Engineering Practice"

DOI: 10.1016/j.conengprac.2021.104910

Abstract: Abstract An innovative injected quantity estimation method, based on time–frequency​ analysis, has been developed for passenger car Common-Rail (CR) injection systems. This method involves capturing the pressure time history from a transducer installed along the… read more here.

Keywords: time frequency; injected mass; time; frequency analysis ... See more keywords
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Regional flood frequency analysis and prediction in ungauged basins including estimation of major uncertainties for mid-Norway

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Published in 2017 at "Journal of Hydrology: Regional Studies"

DOI: 10.1016/j.ejrh.2016.11.004

Abstract: Abstract Study region 26 boreal catchments (mid-Norway). Study focus We performed regional flood frequency analysis (RFFA) using the L -moments method and annual maximum series (AMS) of mean daily streamflow observations for reliable prediction of… read more here.

Keywords: flood frequency; flood; prediction; frequency analysis ... See more keywords