Results 11 to 20 of about 417,505 (259)
Frontiers in Earth Science, 2022 This study proposes a high-resolution processing technique for seismic data based on the improved synchrosqueezing transform (SST). The SST rearranges the complex spectrum of the wavelet transform along the frequency axis.
Chen Yu, Shuyan Wang, Lifang Cheng
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A Novel High-Squint Spotlight SAR Raw Data Simulation Scheme in 2-D Frequency Domain
Remote Sensing, 2022 Raw data simulation is the front-end work of synthetic aperture radar (SAR), which is of great significance. For high-squint spotlight SAR, the frequency domain simulation algorithm is invalid because of the range-azimuth coupling effect.
Zhengwei Guo +4 more
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Transformation of Frequency Distributions [PDF]
Nature, 1948 FREQUENCY distributions of numbers of eggs, insects, spores, or other biological entities are descriptive of discrete variation, and can never be represented exactly by a normal distribution or by any other distribution of a continuous variate. Nevertheless, when the number of observations and the range of variation is large, such distributions may ...
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Frontiers in Microbiology, 2021 Riemerella anatipestifer is a gram-negative bacterium that is the first naturally competent bacterium identified in the family Flavobacteriaceae. However, the determinants that influence the natural transformation and the underlying mechanism remain ...
Li Zhang +55 more
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DESIGN OF BAND-PASS FILTERS WITH NON-EQUIRIPPLE FREQUENCY RESPONSES
Известия высших учебных заведений России: Радиоэлектроника, 2019 Introduction. Band-pass filters circuit elements can be calculated by converting low-pass filter (LPF) parameters, which is the prototype of the designed band-pass filter.
Evgeniy N. Chervinskiy
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Applied Sciences, 2023 Drip irrigation under plastic mulch is widely used and leads to periodic drying–rewetting (DW) cycles in Xinjiang, Northwest China. However, the effect of different wet and dry alternation types on soil inorganic nitrogen transformation is not clear ...
Honghong Ma +3 more
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THE METOD OF SYNTHESIS OF QUASI-DUAL-BAND MATCHING DEVICE
Доклады Белорусского государственного университета информатики и радиоэлектроники, 2020 The article presents some findings on the potential of analytical methods for the synthesis of broadband matching circuits for solving nontrivial circuit engeneering problems.
M. A. Yantsevich, H. A. Filipovich
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Application of Time-Frequency Analysis in Rotating Machinery Fault Diagnosis
Shock and Vibration, 2023 Fault diagnosis is an important means to ensure the safe and reliable operation of mechanical equipment. In machinery fault diagnosis, collecting and mining the potential fault information of the vibration signal is the most commonly used method to ...
Yihao Bai +3 more
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Frontiers in Plant Science, 2023 Highly efficient genetic transformation technology is beneficial for plant gene functional research and molecular improvement breeding. However, the most commonly used Agrobacterium tumefaciens-mediated genetic transformation technology is time-consuming
Min Wang +4 more
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Multiband Filter Design Using Generalized Mapping Functions and Synthesis with Lumped Resonators [PDF]
Radioengineering, 2020 In this paper, a new multiband frequency mapping function is proposed to design multiband filter. The presented mapping function is a generalized form of the sequential low pass to band pass (LPtoBP) transformation.
S. Yildiz +3 more
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