Results 61 to 70 of about 67,702 (286)

Historical seismograms for unravelling a mysterious earthquake: The 1907 Sumatra Earthquake [PDF]

open access: yes, 2010
History of instrumental seismology is short. Seismograms are available only for a little more than 100 years; high-quality seismograms are available only for the last 50 years and the seismological database is very limited in time. To extend the database,
Kanamori, Hiroo   +2 more
core   +2 more sources

3D‐Printed Sulfur‐Derived Polymers With Controlled Architectures for Lithium‐Sulfur Batteries

open access: yesAdvanced Functional Materials, EarlyView.
Rheology‐guided formulation design for direct ink writing enables the fabrication of 3D sulfur copolymer cathodes with controlled architectures for lithium‐sulfur batteries. The printed electrodes exhibit multiscale porosity and high sulfur utilization, delivering enhanced electrochemical performance compared to conventional cast electrodes.
Bin Ling   +7 more
wiley   +1 more source

Waveform design for resonance signature of fighter‐class target

open access: yesIET Radar, Sonar & Navigation, 2023
The authors investigate the feasibility of forming a composite Gaussian waveform in the high‐frequency region for jetfighter class targets with a high potential to combat the noise effect and the late‐time signature onset ambiguity when estimating the ...
Abdullah Alhajri, Faisal Aldhubaib
doaj   +1 more source

Two improved methods for testing ADC parametric faults by digital input signals [PDF]

open access: yes, 2009
In this paper, two improved methods are presented extending our previous work. The first one improves the results by adjusting the voltage levels of the input pulse wave stimulus.
Kerkhoff, Hans G., Sheng, Xiaoqin
core   +4 more sources

Misconception of Waveform Similarity in the Identification of Repeating Earthquakes

open access: yesGeophysical Research Letters, 2021
AbstractIdentification of repeating earthquakes (repeaters) usually depends on waveform similarity expressed as the corresponding cross‐correlation coefficient (CC) above a prescribed threshold, typically ranging in 0.70–0.98. However, the robustness and effectiveness of such a strategy have rarely been fully examined. In this study, we examine whether
Dawei Gao, Honn Kao, Bei Wang
openaire   +1 more source

Region‐to‐Region Unidirectional Connection In Vitro Brain Model for Studying Directional Propagation of Neuropathologies

open access: yesAdvanced Functional Materials, EarlyView.
A unidirectional cerebral organoid–organoid neural circuit is established using a microfluidic platform, enabling controlled directional propagation of electrical signals, neuroinflammatory cues, and neurodegenerative disease–related proteins between spatially separated organoids.
Kyeong Seob Hwang   +9 more
wiley   +1 more source

Pilot Protection of New Energy Transmission Line in Active Distribution Network Based on 5G Communication

open access: yesZhongguo dianli
Traditional pilot differential protection will have the problem of reliability reduction or even failure to operate after the access of new energy stations.
Tiecheng LI   +5 more
doaj   +1 more source

Optimization and Quality Assessment of Arrival Time Picking for Downhole Microseismic Events

open access: yesSensors, 2022
Arrival-time picking is a critical step in microseismic data processing, and thus the quality control of arrival results is necessary. Conventional picking methods may be inaccurate or inconsistent due to varied signal-to-noise ratios (SNR) and waveform ...
Jiaxuan Leng   +3 more
doaj   +1 more source

In Situ Study of Resistive Switching in a Nitride‐Based Memristive Device

open access: yesAdvanced Functional Materials, EarlyView.
In situ TEM biasing experiment demonstrates the volatile I‐V characteristic of MIM lamella device. In situ STEM‐EELS Ti L2/L3 ratio maps provide direct evidence of the oxygen vacancies migrations under positive/negative electrical bias, which is critical for revealing the RS mechanism for the MIM lamella device.
Di Zhang   +19 more
wiley   +1 more source

Codesign of Transmit Waveform and Receive Filter with Similarity Constraints for FDA-MIMO Radar

open access: yesRemote Sensing
The codesign of the receive filter and transmit waveform under similarity constraints is one of the key technologies in frequency diverse array multiple-input multiple-output (FDA-MIMO) radar systems.
Qiping Zhang   +6 more
doaj   +1 more source

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