Results 21 to 30 of about 837,611 (290)

Study on Forward Numerical Simulation and Instantaneous Seismic Attributes of Natural Gas Hydrate in Permafrost Area

CT Lilun yu yingyong yanjiu, 2023
Natural gas hydrate is a new energy source with great potential. Studying the seismic response characteristics of natural gas hydrate in permafrost area is crucial to the exploration and development of natural gas hydrate in China's land area.
Wenhai YANG, Guangdong ZHANG, Zhi TAN, Cong JIN   +3 more
doaj   +1 more source

Novel Method for Vibration Sensor-Based Instantaneous Defect Frequency Estimation for Rolling Bearings Under Non-Stationary Conditions

Sensors, 2020
It is proposed a novel instantaneous frequency estimation technology, multi-generalized demodulation transform, for non-stationary signals, whose true time variations of instantaneous frequencies are unknown and difficult to extract from the time ...
Dezun Zhao, Len Gelman, Fulei Chu, Andrew Ball   +3 more
doaj   +1 more source

Distribution and Prediction of Incremental Cutter Flank Wear in High-Efficiency Milling

Applied Sciences, 2023
In the milling of titanium alloy workpieces, tool wear seriously affects the surface quality of a workpiece and its tool life. It is of great significance to study the influence of instantaneous contact stiffness on instantaneous friction variables and ...
Peiyi Zhao, Yufeng Song, Bin Jiang, Bin Wang   +3 more
doaj   +1 more source

On the instantaneous Bethe-Salpeter equation [PDF]

, 1995
We present a systematic algebraic and numerical investigation of the instantaneous Bethe-Salpeter equation. Emphasis is placed on confining interaction kernels of the Lorentz scalar, time component vector, and full vector types.
A. Gara, A. Gara, A. Le Yaouanc, A. Messiah, C. H. Llewellyn Smith, C. Long, C. R. Mddotunz, D. J. Thouless, D. J. Thouless, E. E. Salpeter, E. E. Salpeter, E. J. Weniger, G. 't Hooft, H. R. Petry, J. F. Lagaddote, J. F. Lagaddote, J. Parramore, J. Resag, Ken Williams, M. A. Shifman, M. G. Olsson, M. G. Olsson, M. Gell Mann, S. J. Brodsky, Siniša Veseli, T. Murota   +25 more
core   +3 more sources

Determination method and application of instantaneous rotation center of CNC machine tool XY worktable [PDF]

AIP Advances
The XY worktable is a critical component of CNC machine tools and a significant source of measurement errors in on-machine measurement systems.
Li Li, Wenxiang Qiu, Shenao Wang, Tiantian Wu, Xiangyao Luo   +4 more
doaj   +1 more source

Instantaneous Bethe-Salpeter Equation: Analytic Approach for Nonvanishing Masses of the Bound-State Constituents [PDF]

, 2000
The instantaneous Bethe-Salpeter equation, derived from the general Bethe-Salpeter formalism by assuming that the involved interaction kernel is instantaneous, represents the most promising framework for the description of hadrons as bound states of ...
Franz F. Schöberl, J.-F. Lagaë, Khin Maung Maung, M. G. Olsson, M. G. Olsson, W. Lucha, W. Lucha, W. Lucha, W. Lucha, W. Lucha, W. Lucha, Wolfgang Lucha   +11 more
core   +3 more sources

EFFECT OF TRANSIENT AND FREQUENCY RESPONSE ON RC AND RLC CIRCUITS TO INSTANTANEOUS FORCING FUNCTION

Academy Journal of Science and Engineering, 2022
This study examines the effect transient and frequency response on RC and RLC circuits to Instantaneous forcing functions. The governing equations of electrical vibration for both circuits were formulated using Kirchhoff’s voltage law.
E. Ayankop-Andi, Umar D. M, G.J. Ibeh
doaj  

Fluctuations in instantaneous frequency predict alpha amplitude during visual perception. [PDF]

, 2017
Rhythmic neural activity in the alpha band (8-13 Hz) is thought to have an important role in the selective processing of visual information. Typically, modulations in alpha amplitude and instantaneous frequency are thought to reflect independent ...
Itthipuripat, Sirawaj, Nelli, Stephanie, Serences, John T, Srinivasan, Ramesh   +3 more
core   +3 more sources

Modeling and Distribution Identification of Instantaneous Cutting Energy Efficiency of Milling Cutter under Vibration

Applied Sciences, 2022
The instantaneous cutting energy efficiency of a milling cutter is an important index to evaluate the cutting performance of the milling cutter. The existing models for cutting energy efficiency ignore the differences in the instantaneous cutting energy ...
Bin Jiang, Lili Fan, Peiyi Zhao, Yufeng Song, Bin Wang   +4 more
doaj   +1 more source

Instantaneous Decentralized Poker [PDF]

, 2017
We present efficient protocols for amortized secure multiparty computation with penalties and secure cash distribution, of which poker is a prime example.
A Barnett, A Kiayias, B Pinkas, C Crépeau, C Crépeau, D Coppersmith, I Bentov, I Damgård, J Castellà-Roca, K Croman, M Möser, O Goldreich, S Bayer, TJ Wei   +13 more
core   +2 more sources