Results 11 to 20 of about 801,834 (293)

Altered neuromagnetic activity under visual stimuli in migraine: a multi-frequency magnetoencephalography study [PDF]

Frontiers in Neurology
BackgroundMigraine is a chronic neurological disorder associated with a variety of abnormal visual symptoms. However, the mechanisms of visual processing in migraine are not fully understood.
Di Wu, Zhiyuan Zhou, Yingfan Wang, Hongxing Liu, Yuanwen Yu, Qiqi Chen, Xiaoshan Wang   +6 more
doaj   +2 more sources

Comparison Analysis on the Accuracy of Galileo PPP Using Different Frequency Combinations in Europe

Applied Sciences, 2021
The Galileo constellations are characterized by transmitting GNSS signals on multi-frequencies, which can benefit the robustness and accuracy of the solutions.
Jia Song, Lewen Zhao
doaj   +1 more source

Multi-Frequency Canonical Correlation Analysis (MFCCA): A Generalised Decoding Algorithm for Multi-Frequency SSVEP [PDF]

2021 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), 2021
Stimulation methods that utilise more than one stimulation frequency have been developed for steady-state visual evoked potential (SSVEP) brain-computer interfaces (BCIs) with the purpose of increasing the number of targets that can be presented simultaneously.
Jing Mu 0001, Ying Tan 0001, David B. Grayden, Denny Oetomo   +3 more
openaire   +5 more sources

Multi-Frequency Magnetic Induction Tomography System and Algorithm for Imaging Metallic Objects

Sensors, 2021
Magnetic induction tomography (MIT) is largely focused on applications in biomedical and industrial process engineering. MIT has a great potential for imaging metallic samples; however, there are fewer developments directed toward the testing and ...
Gavin Dingley, Manuchehr Soleimani
doaj   +1 more source

Inkjet 3D Printed MEMS Electromagnetic Multi-Frequency Energy Harvester

Energies, 2022
Multi-frequency operation is an interesting and desired feature of electromagnetic energy harvesters. This work presents results of investigations on an inkjet 3D-printed miniature multi-frequency electromagnetic energy harvester.
Bartosz Kawa, Chengkuo Lee, Rafał Walczak   +2 more
doaj   +1 more source

Multi-frequency resonant clocks [PDF]

2015 IEEE International Symposium on Circuits and Systems (ISCAS), 2015
Clock distribution networks consume a significant portion of total chip power in high-performance designs. Resonant clocks are one proposed method to lower this power in modern designs as well as a fewer required clock buffers. Recent resonant solutions are limited to optimal performance at one particular frequency which is problematic since dynamic ...
Guthaus, Matthew, Lacara, Benjamin, Lin, Ping-Yao   +2 more
openaire   +2 more sources

Frequency Domain Electromagnetic System Based on Unmanned Aerial Vehicles Platform for Detecting Shallow Subsurface Targets

Remote Sensing, 2023
Due to the advantages of being nondestructive, rapid, and convenient, the electromagnetic detection method has attracted growing interest in the field of shallow subsurface detection. With the rapid development of unmanned aerial vehicle (UAV) technology,
Shiyan Li, Kang Xing, Xiaojuan Zhang
doaj   +1 more source

Parallel Computation of Multi-GNSS and Multi-Frequency Inter-Frequency Clock Biases and Observable-Specific Biases

Remote Sensing, 2023
With the widespread application of GNSS, the delicate handling of biases among different systems and different frequencies is of critical importance, wherein the inter-frequency clock biases (IFCBs) and observable-specific signal biases (OSBs) should be ...
Linyang Li, Zhen Yang, Zhen Jia, Xin Li
doaj   +1 more source

Multi-frequency therapeutic ultrasound: A review. [PDF]

Ultrason Sonochem, 2023
Focused ultrasound is a noninvasive, radiation-free and real-time therapeutic approach to treat deep-seated targets, which benefits numerous diseases otherwise requiring surgeries. Treatment efficiency is one of the key factors determining therapeutic outcomes, but improving it solely by increasing the total power can be limited by the performance of ...
Zhang D, Wang X, Lin J, Xiong Y, Lu H, Huang J, Lou X.   +6 more
europepmc   +4 more sources

The status of the QUIJOTE multi-frequency instrument [PDF]

SPIE Proceedings, 2012
The QUIJOTE-CMB project has been described in previous publications. Here we present the current status of the QUIJOTE multi-frequency instrument (MFI) with five separate polarimeters (providing 5 independent sky pixels): two which operate at 10-14 GHz, two which operate at 16-20 GHz, and a central polarimeter at 30 GHz.
Hoyland R. J., Aguiar-Gonzalez M., Aja B., Arino J., Artal E., Barreiro R. B., Blackhurst E. J., Cagigas J., Cano De Diego J. L., Casas F. J., Davis R. J., Dickinson C., Arriaga B. E., Fernandez-Cobos R., De La Fuente L., Genova-Santos R., Gomez A., Gomez C., Gomez-Renasco F., Grainge K., Harper S., Herran D., Herreros J. M., Herrera G. A., Hobson M. P., Lasenby A. N., Lopez-Caniego M., Lopez-Caraballo C., Maffei B., Martinez-Gonzalez E., McCulloch M., Melhuish S., Mediavilla A., Murga G., Ortiz D., Piccirillo L., Pisano G., Rebolo-Lopez R., Rubino-Martin J. A., Luis Ruiz J., Sanchez De La Rosa V., Sanquirce R., Vega-Moreno A., Vielva P., Viera-Curbelo T., Villa E., Vizcarguenaga A., Watson R. A.   +47 more
openaire   +7 more sources