Results 71 to 80 of about 42,348 (158)

Geometry-Based Synchrosqueezing S-Transform with Shifted Instantaneous Frequency Estimator Applied to Gearbox Fault Diagnosis

Sensors
This paper introduces a novel geometry-based synchrosqueezing S-transform (GSSST) for advanced gearbox fault diagnosis, designed to enhance diagnostic precision in both planetary and parallel gearboxes.
Xinping Zhu, Wuxi Shi, Zhongxing Huang, Liqing Shi   +3 more
doaj   +1 more source

Temperature and finite-size effects in collective modes of superfluid Fermi gases

, 2005
We study the effects of superfluidity on the monopole and quadrupole collective excitations of a dilute ultra-cold Fermi gas with an attractive interatomic interaction.
E. Khan, M. Grasso, M. Urban, P. Ring, P.-G. de Gennes   +4 more
core   +3 more sources

Radar Waveform Recognition With ConvNeXt and Focal Loss

IEEE Access
A method of automatic recognition of radar waves based on time-frequency analysis (TFA) and ConvNeXt model is proposed in the paper. The method aims to address the challenges of feature extraction difficulty and low recognition correctness in complex ...
Liping Luo, Jie Huang, Yang Yang, Dexiu Hu   +3 more
doaj   +1 more source

Time-frequency component analysis of somatosensory evoked potentials in rats

BioMedical Engineering OnLine, 2009
Background Somatosensory evoked potential (SEP) signal usually contains a set of detailed temporal components measured and identified in a time domain, giving meaningful information on physiological mechanisms of the nervous system.
Luk Keith, Chan Shing-Chow, Yang Jun-Lin, Zhang Zhi-Guo, Hu Yong   +4 more
doaj   +1 more source

Deep MMT Transit Survey of the Open Cluster M37 IV: Limit on the Fraction of Stars With Planets as Small as 0.3 R_J

, 2008
We present the results of a deep (15 ~< r ~< 23), 20 night survey for transiting planets in the intermediate age open cluster M37 (NGC 2099) using the Megacam wide-field mosaic CCD camera on the 6.5m MMT. We do not detect any transiting planets among the
Alard, Alonso, An, B. A. McLeod, B. S. Gaudi, Bakos, Beatty, Burke, Butler, Butler, Carraro, Endl, Fischer, Fischer, Fortney, Gaudi, Gaudi, Gilliland, Gould, Gratton, Hartman, Hartman, Hartman, Hartman, Ibata, Ida, Ida, J. A. Barranco, J. D. Hartman, J. S. Kalirai, Joachims, Joachims, K. Z. Stanek, Kalirai, Kalirai, Kaluzny, Konacki, Kurucz, M. H. Pinsonneault, M. J. Holman, Mandel, McCullough, McLeod, Mochejska, Mochejska, Origlia, Pepper, Pepper, Press, Rivera, S. Meibom, Skrutskie, Stetson, Szentgyorgyi, Tingley, Torres, Udalski, Vapnik, Vogt, Weldrake, Weldrake   +60 more
core   +1 more source

HAT-P-47b AND HAT-P-48b: Two Low Density Sub-Saturn-Mass Transiting Planets on the Edge of the Period--Mass Desert [PDF]

, 2016
We report the discovery of two new transiting extrasolar planets orbiting moderately bright (V = 10.7 and 12.2 mag) F stars (masses of 1.39 Msun and 1.10 Msun, respectively).
Bakos, G. Á., Bieryla, A., Buchhave, L. A., Béky, B., Csubry, Z., Esquerdo, G. A., Everett, M., Fulton, B. J., Hartman, J. D., Howard, A. W., Kovács, G., Kovács, T., Latham, D. W., Lázár, J., Marcy, G. W., Noyes, R. W., Papp, I., Penev, K., Quinn, S. N., Sato, B., Shporer, A., Szklenár, T., Sári, P., Torres, G.   +23 more
core   +1 more source

Highly anisotropic Bose-Einstein condensates: crossover to lower dimensionality

, 2002
We develop a simple analytical model based on a variational method to explain the properties of trapped cylindrically symmetric Bose-Einstein condensates (BEC) of varying degrees of anisotropy well into regimes of effective one dimension (1D) and ...
A. Görlitz, A.E. Leanhardt, A.I. Safonov, A.L. Fetter, A.L. Fetter, B.A. McKinney, B.I. Schneider, B.P. Anderson, D. Baye, D.S. Petrov, D.S. Petrov, E. Lieb, E. Lundh, E.B. Kolomeisky, F. Dalfovo, F. Dalfovo, G. Baym, H. Ott, J. Arlt, J. Denschlag, J.O. Andersen, K. Bongs, Kunal K. Das, Kunal K. Das, L. Tonks, M. Fliesser, M. Key, M. Olshanii, M.D. Girardeau, M.D. Girardeau, M.D. Girardeau, Markus Greiner, N.H. Dekker, P. Schuck, P. Öhberg, S. Stringari, T. Bergeman, T. Kishimoto, T.-L. Ho, U. Al Khawaja, V. Dunjko, W. Hänsel, W. Hänsel, Y. Castin   +43 more
core   +1 more source

The influence of prosthetic suspension on gait and cortical modulations is persons with a transfemoral amputation: socket-suspended versus bone-anchored prosthesis

Journal of NeuroEngineering and Rehabilitation
Background Persons with a transfemoral amputation (TFA) often experience difficulties in daily-life ambulation, including an asymmetrical and less stable gait pattern and a greater cognitive demand of walking.
Vera Kooiman, Joris van der Cruijsen, Ruud Leijendekkers, Nico Verdonschot, Teodoro Solis-Escalante, Vivian Weerdesteyn   +5 more
doaj   +1 more source

SNAC-tag for sequence-specific chemical protein cleavage. [PDF]

, 2019
Site-specific protein cleavage is essential for many protein-production protocols and typically requires proteases. We report the development of a chemical protein-cleavage method that is achieved through the use of a sequence-specific nickel-assisted ...
Dang, Bobo, DeGrado, William F, Hu, Hailin, Mensa, Bruk, Mravic, Marco, Schmidt, Nathan   +5 more
core  

Physically Explainable Intelligent Perception and Application of SAR Target Characteristics Based on Time-frequency Analysis

Leida xuebao
The current state of intelligent target recognition approaches for Synthetic Aperture Radar (SAR) continues to experience challenges owing to their limited robustness, generalizability, and interpretability.
Zhongling HUANG, Chong WU, Xiwen YAO, Lipeng WANG, Junwei HAN   +4 more
doaj   +1 more source