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Shengying Yang, Huibin Qin, Xiaolin Liang and Thomas Aaron Gulliver
Life sign detection is important in many applications, such as locating disaster victims. This can be difficult in low signal to noise ratio (SNR) and through-wall conditions. This paper considers life sign detection using an impulse ultra-wideband (UWB)...
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Jiao Liu, Guoyou Shi and Kaige Zhu
To improve the overall accuracy of tidal forecasting and ameliorate the low accuracy of single harmonic analysis, this paper proposes a combined tidal forecasting model based on harmonic analysis and autoregressive integrated moving average?support vecto...
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Shi He and Aijun Wang
The numerical procedures for dynamic analysis of mooring lines in the time domain and frequency domain were developed in this work. The lumped mass method was used to model the mooring lines. In the time domain dynamic analysis, the modified Euler method...
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Fayun Zhou, An Luo, Yan Li, Qianming Xu, Zhixing He and Josep M. Guerrero
Modular multilevel converters (MMCs) have become one of the most attractive topologies for high-voltage and high-power applications. A double-carrier phase disposition pulse width modulation (DCPDPWM) method for MMCs is proposed in this paper. Only doubl...
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Roman Varbanets, Oleksij Fomin, Václav Pí?tek, Valentyn Klymenko, Dmytro Minchev, Alexander Khrulev, Vitalii Zalozh and Pavel Kucera
The article presents the acoustic method of marine low-speed engine turbocharger parameter estimation under operating conditions when a prompt assessment of instantaneous turbocharger speed and rotor vibration level is required. The method lies in the an...
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Xin Qian, Yu Fan, Yaguang Wu, Wenjun Wang and Lin Li
Stability analysis of lateral?torsional coupled vibration is obligatory for rotating machinery, such as aero-engines. However, the state-of-the-art method may lead to stability misjudgment under different coordinate systems. The cause of this misjudgment...
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Anvar Valeev and Bulat Kharrasov
This paper is devoted to a new approach to condition monitoring. The main feature is an application of strain gauge analysis for geometrical locating of vibrating defects. Information about the exact geometrical location of a defect, intensity of excitat...
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Guishuo Wang, Xiaoli Wang and Chen Zhao
The current signal harmonic detection method(s) cannot reduce the errors in the analysis and extraction of mixed harmonics in the power grid. This paper designs a harmonic detection method based on discrete Fourier transform (DFT) and discrete wavelet tr...
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Michalina Kania, Tomasz Lukaszewicz, Dariusz Kania, Katarzyna Moscinska and Józef Kulisz
This paper compares approaches to music key detection based on popular key-profiles with a new key detection method that utilizes the concept of the signature of fifths. The signature of fifths is a geometrical music harmonic-content descriptor. Dependin...
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Jing Sun and Suwit Ongsomwang
An understanding of historical and present land use and land cover (LULC) information and its changes, such as urbanization and urban growth, is critical for city planners, land managers and resource managers in any rapidly changing landscape. To deal wi...
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Olha Baranova,Mykola Vasylenko,Konstantin Shevchenko,Yuriy Tsapko,Oliinyk Rostislav,Andrii Yeroshenko
Pág. 48 - 56
It has been determined that the most expedient and economically beneficial flaw detection method for plywood is the impact method. Samples of plywood with and without a defect were used for the research. Among the acoustic techniques, the most accurate i...
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Hyun-Ju Oh, Jung-Hoon Park and Hyung-Choon Park
Pile foundations are used to support superstructures and play an important role in the safety of these structures. The performance of pile foundations generally depends on the conditions of the pile itself and the material under the pile tip(i.e., bottom...
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Miodrag D. Ku?ljevic and Vladimir V. Vujicic
Although voiced speech signals are physical signals which are approximately harmonic and electric power signals are true harmonic, the algorithms used for harmonic analysis in electric power systems can be successfully used in speech processing, includin...
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Chenyu Wang, Hong Qiao, Yi Wang and Xianting Du
The characteristics of bridge pile-group foundation have a significant influence on the dynamic performance of the superstructure. Most of the existing analysis methods for the pile-group foundation impedance take the trait of strong specialty, which can...
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Yeison Alberto Garcés-Gómez,Paula Andrea López Jimenez,Oscar Oswaldo Cárdenas Delgado,Vladimir Henao Cespedes,Nicolás Toro García
Pág. pp. 140 - 149
During pendulum analysis, the approximation for small angles is usually performed as a simple harmonic motion. However, for large angles, this approximation is not convenient so exact solutions are proposed by differ-ent methods. This paper presents the ...
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Saijun Yuan, Zhiguo Hao, Tao Zhang, Xiaotian Yuan and Jin Shu
Subsynchronous oscillation (SSO) is a critical issue for the direct-drive permanent magnet synchronous generator (D-PMSG) based wind farm integrated to a weak onshore AC grid. To analyze the mechanism of the SSO phenomenon of D-PMSG based wind farm, wide...
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Hao Zhao, Lide Su, Yong Zhang, Hongmei Cui, Jian Wang and Kailin Ren
In recent years, with the gradual expansion of the planting area for Chinese crab apple trees, the traditional method of picking crab apples has become inadequate due to its large workload, low efficiency, and high cost. To address this issue, this paper...
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Christos Koroulis, Evangelos Makris, Angelos Kolaitis, Panayiotis Tsanakas and Christos Pavlatos
The observation and analysis of RNA molecules have proved crucial for the understanding of various processes in nature. Scientists have mined knowledge and drawn conclusions using experimental methods for decades. Leveraging advanced computational method...
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Mariana Cabral Pinto, Odair Honorato de Oliveira, Maria Beatriz Araújo de Oliveira, Cleiton Ribeiro da Silva, Marcela Portela Santos de Figueiredo, Rômulo Gil de Luna, Anielson dos Santos Souza, Lauter Silva Souto, Ancélio Ricardo de Oliveira Godim, Rodolfo Rodrigo de Almeida Lacerda, Andréa Chaves Fiuza Porto, Frank Gomes-Silva, Josimar Mendes de Vasconcelos, Guilherme Rocha Moreira, Maria Lindomárcia Leonardo da Costa, Mércia Regina Pereira de Figueiredo, Fabiana Aparecida Cavalcante Silva, Francisco Cássio Gomes Alvino, Amaro Epifânio Pereira Silva, Leonardo de Sousa Alves, Diogo Gonçalves Neder, Bianca Galúcio Pereira Araújo, Lucas Carvalho de Freitas, Tercilio Calsa Junior and João de Andrade Dutra FilhoaddShow full author listremoveHide full author list
Maize is a crop of significant economic importance. In the northeast region of Brazil, it serves as the foundation of family support for the majority of farmers. However, achieving high levels of productivity requires an adequate water supply throughout ...
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Habib Hamam
We propose a new rotation invariant correlator using dimensionality reduction. A diffractive phase element is used to focus image data into a line which serves as input for a conventional correlator. The diffractive element sums information over each rad...
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