Results 1 to 10 of about 9,439,872 (313)
Frequency‐independent Sound Absorbing Metamaterials
Advanced Materials Technologies, 2023 AbstractInspired by the concept of frequency‐independent antennas in the electromagnetics, which theoretically exhibit a frequency‐independent bandwidth, this paper extends the concept to acoustics by adopting a log‐spiral and its modified shape to introduce a class of metamaterials called frequency‐independent sound‐absorbing metamaterials.
Semere B. Gebrekidan, Steffen Marburg
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A Novel Technique for Load Frequency Control of Multi-Area Power Systems [PDF]
Energies, 2020 In this paper, an adaptive type-2 fuzzy controller is proposed to control the load frequency of a two-area power system based on descending gradient training and error back-propagation. The dynamics of the system are completely uncertain.
Ali Dokht Shakibjoo +3 more
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Sampling Frequency Independent Dialogue Separation [PDF]
2022 30th European Signal Processing Conference (EUSIPCO), 2022 In some DNNs for audio source separation, the relevant model parameters are independent of the sampling frequency of the audio used for training. Considering the application of dialogue separation, this is shown for two DNN architectures: a U-Net and a fully-convolutional model. The models are trained with audio sampled at 8 kHz. The learned parameters
Paulus, Jouni, Torcoli, Matteo
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Self-rated health and its association with the individual’s activities of daily living: A cross-sectional study among elderly residing in an urban settlement [PDF]
Journal of Family Medicine and Primary CareContext: The phenomenon of population aging being inevitable, and the elderly being an asset to society by their skills and experience, their health and well-being is of paramount importance.
Sahoo Priyaranjan +2 more
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Operational reliability assessment considering independency between wind power ramps and frequency sensitive loads [PDF]
E3S Web of Conferences, 2021 With the increasing wind power penetration, power system frequency is more vulnerable especially when gust wind periods. Frequency control is used to restore system frequency back to the rated value.
Xiao Xiaolong +3 more
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Towards Scalable and Channel-Robust Radio Frequency Fingerprint Identification for LoRa [PDF]
IEEE Transactions on Information Forensics and Security, 2021 Radio frequency fingerprint identification (RFFI) is a promising device authentication technique based on transmitter hardware impairments. The device-specific hardware features can be extracted at the receiver by analyzing the received signal and used ...
Guanxiong Shen +3 more
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Sensors, 2021 Recent advances in nanomaterials technology create the new possibility to fabricate high performance sensors. However, there has been limitations in terms of multivariate measurable and interoperable sensors. In this study, we fabricated an interoperable
Soo-Hong Min +4 more
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AC characteristics of low-ohmic foil shunts influenced by eddy currents in the mounting body [PDF]
Journal of Sensors and Sensor Systems, 2019 The requirements for precision current-sensing shunts are getting more sophisticated due to further development of fast switch-mode converters and other high-frequency applications.
M. Schönecker-Baußmann
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Earthquake Engineering & Structural Dynamics, 2023 Damped outrigger system is effective for improving energy dissipation for tall buildings. However, conventional damped outrigger (CDO) system with viscous damping has two limitations: (i) its maximum damping ratio cannot be improved when outrigger/column
M. Wang +5 more
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A Frequency Independent Phase Shifter
Acoustics, 2023 A frequency-independent phase shift is determined such that two phase shifted versions of a signal can be summed whereby the resulting amplitude spectrum is unchanged. A phase difference between two signals is thus defined which remains constant for all frequencies within a given range.
Máté Csanád +2 more
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