Results 31 to 40 of about 2,229,339 (290)
Operational Non-Contact Diagnostics of Induction Machine Based on Stray Electromagnetic Field
Communications, 2015 Paper deals with one new method of testing and operational diagnostics of induction machines using a stray electromagnetic field. This leakage field on the surface or on surroundings of machine frame is the carrier for diagnostic information and we can ...
Petr Bernat, Petr Kacor
doaj +1 more source
The characteristics of continuous gravity changes in Qiongzhong seismic station
地震科学进展, 2020 This paper collected the continuous gravity observation data from Qiongzhong seismic station since 2009. After processing the raw data with sudden jumps，steps and error data，we calculated and analyzed the characteristics of the gravity tide data from ...
Jialin Wu +5 more
doaj +1 more source
, 2017 We present a fast and versatile method to calculate the characteristic spectrum $h_c$ of the gravitational wave background (GWB) emitted by a population of eccentric massive black hole binaries (MBHBs).
Chen, Siyuan +2 more
core +1 more source
Modelling and Study of the Effect of Geometrical Parameters of Piezoelectric Plate and Stack
Applied Sciences, 2021 The piezoelectric stack is employed as an actuator and a sensor in a variety of technical applications. The dynamic modelling of piezoelectric plates and stack is used to investigate and search for new applications in mechatronics systems that are based ...
Tolera G. Degefa +2 more
doaj +1 more source
Low frequency radio spectrum and spectral turnover of LS 5039 [PDF]
, 2008 LS 5039, a possible black hole x-ray binary, was recently observed with Giant Meterwave Radio Telescope. The observed spectrum presented here shows that the spectrum is inverted at the low frequency.
Aharonian +24 more
core +2 more sources
Analysis of acoustic wave transmission characteristics in underground coal mine drill pipe
Meikuang AnquanThe acoustic wave transmission of MWD data is an important means to realize the high-speed and accurate transmission of borehole data in coal mine, which is conducive to changing the situation that most of the underground gas extraction in coal mine is ...
Xining REN, Jun GAO, Jia ZHANG
doaj +1 more source
A Hybrid Approach for Identification of Manhole and Staircase to Assist Visually Challenged
IEEE Access, 2018 Recognition of an object is a bare minimum restraint for an individual in order to sort out or classify the type of the object. This situation becomes a tricky experience with respect to the blind persons; therefore, to assist visually challenged persons,
Sreenu Ponnada +2 more
doaj +1 more source
Frequency Spectrum Adaptor for Remote Sensing Image–Text Retrieval
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingRemote sensing image–text retrieval (RSITR) is a critical task that involves parsing the content of remote sensing (RS) images to match semantically relevant text.
Ziyi Wan +6 more
doaj +1 more source
Acoustic frequency spectrum characteristics in periodic drill string under tension
Energy Science & Engineering, 2020 It is a promising measure to transmit downhole information by acoustic wave through drill string. However, the transmission distance and quality of acoustic signals in field conditions are still not satisfied because the acoustic frequency spectrum in ...
Qing Wang, Zhichuan Guan, Yongwang Liu
doaj +1 more source
, 2016 Bright squeezed vacuum, a promising tool for quantum information, can be generated by high-gain parametric down-conversion. However, its frequency and angular spectra are typically quite broad, which is undesirable for applications requiring single-mode ...
Boyd, Robert W. +6 more
core +1 more source