Results 1 to 10 of about 3,629,185 (100)
Sensors, 2022 Recently, wideband microwave spectroscopy (WBMS) has been applied for material characterization. Blood glucose sensing through microwave spectroscopy is usually done with resonant frequency-domain methods.
Samira Saeedi +2 more
doaj +1 more source
Matrix Pencil Method for Vital Sign Detection from Signals Acquired by Microwave Sensors
Sensors, 2021 Microwave sensors have recently been introduced as high-temporal resolution sensors, which could be used in the contactless monitoring of artery pulsation and breathing. However, accurate and efficient signal processing methods are still required.
Somayyeh Chamaani +3 more
doaj +1 more source
The Astrophysical Journal, 2023 The conditions under which accreting neutron stars launch radio-emitting jets and/or outflows are still poorly understood. The ultracompact X-ray binary X1850–087, located in the globular cluster NGC 6712, is a persistent atoll-type X-ray source that has
Teresa Panurach +8 more
doaj +1 more source
Identifying the best method for linearizing the nonlinear friction term to analyze the transient flow in pipeline systems [PDF]
Journal of Applied Research in Water and Wastewater, 2022 To analyze transient flows, continuity and momentum equations must be solved. Due to the non-linear friction term in the momentum equation, numerical methods such as method of characteristics (MOC) are used to analyze the problem in thetime domain ...
Mahshid Alsadat Mousavian +2 more
doaj +1 more source
Is the M81 Fast Radio Burst Host Globular Cluster Special?
The Astrophysical Journal Letters, 2023 We use multiband archival Hubble Space Telescope (HST) observations to measure the photometric and structural parameters of the M81 globular cluster (GC) that hosts the fast radio burst FRB 20200120E. Our best-fitting King model has an effective radius r
Kristen C. Dage +7 more
doaj +1 more source
Microwave Angiography by Ultra-Wideband Sounding: A Preliminary Investigation
Diagnostics, 2023 Angiography is a very informative method for physicians such as cardiologists, neurologists and neuroscientists. The current modalities experience some shortages, e.g., ultrasound is very operator dependent.
Somayyeh Chamaani +5 more
doaj +1 more source
Evidence for Multiple Shocks from the γ-Ray Emission of RS Ophiuchi
The Astrophysical Journal, 2023 In 2021 August, the Fermi Large Area Telescope, H.E.S.S., and MAGIC detected GeV and TeV γ -ray emission from an outburst of recurrent nova RS Ophiuchi. This detection represents the first very high-energy γ -rays observed from a nova, and it opens a new
Rebecca Diesing +6 more
doaj +1 more source
Harmonics Signal Feature Extraction Techniques: A Review
Mathematics, 2023 Harmonic estimation is essential for mitigating or suppressing harmonic distortions in power systems. The most important idea is that spectrum analysis, waveform estimation, harmonic source classification, source location, the determination of harmonic ...
Minh Ly Duc, Petr Bilik, Radek Martinek
doaj +1 more source
Time-domain ptychography [PDF]
, 2015 Through dedicated measurements in the optical regime we demonstrate that ptychography can be applied to reconstruct complex-valued object functions that vary with time from a sequence of spectral measurements. A probe pulse of approximately 1 ps duration,
Brügmann, Michael H. +4 more
core +2 more sources
Computer Assisted Methods in Engineering and Science, 2022 A rapid design and verification of sigma delta modulators are presented at the system level with high accuracy and computational efficiency. Sigma delta analog to digital converters showcased an excellent choice for low bandwidth applications from near ...
S. Vamsee Krishna +2 more
doaj +1 more source