[263,271] introduced a dynamical feedback principle by means of a nonlinear differential equation for the evolution of the weights which is coupled to the dynamics of the nodes while the connectivity matrix is
First we review the classical analog uncertainty principle and the short-time Fourier transform. Then we develop the discrete-time counterparts to these and show how the binomial sequences emulate the continuous-time Gaussian functions. Following this introduction, we define, calculate, and compare loc...
Recent developments in resonator-based Kerr frequency combs promise excellent applications in a wide range of fields such as biosensing, spectroscopy, optical communications, light detection and ranging (LiDAR), frequency synthesis, astronomical detection, and quantum optics. A key figure of merit (FOM...
ANC basic principle diagram. The basic concept of an ANC system involves noise cancellation by summing the primary and secondary signals, as shown in Figure 2. However, this model represents a simplified theoretical framework and does not fully address the complexities of practical applications. In ...
In the literature, the impedance measurement of high-power fuel cell vehicles typically employs perturbation signal injection based on an electronic load [14]. The operational principle mainly involves controlling the electronic load to ensure the fuel cell outputs an alternating current (AC) excitation...
This paper is organized as follows: In Section2, a summary of the mechanism of co-frequency faults in rotating machinery is made; meanwhile, the principle of the co-frequency fault diagnosis algorithm LW-CNN and SVM is introduced. In Section3, the method of real-time diagnosis of co-frequen...
The fundamental principle of reinforcement learning is to continuously explore and learn from experiences, where different actions yield varying rewards. Higher rewards are given when the results are closer to the expected values, while lower rewards are assigned otherwise [49]. In contrast to ...
Electronegative gases, such as iodine or sulfur hexafluoride are also investigated as propellant for a neutralizer free electric propulsion system, where both negatively and positively charged ions are extracted in order to avoid a charging of the spacecraft. This principle has been introduced in the...
I.2.3.3 The uncertainty principle in the time-frequency domain Let x(t) be a zero-mean deterministic signal and X(f) its FT. Let us try to localize simultaneously x(t) and X(f). Let us assume that x(t) is a finite energy signal centered around t = 0; and X(f) is centered ...
Thus the quantum mechanical expressions for the nonlinear susceptibilities of the second and third orders are found to conform to this principle in an approximate sense over appropriately chosen frequency intervals. 9.4.3.3 Approximate formulae for the susceptibilities While the quantum mechanical approach...