- Вы можете использовать опцию И / ИЛИ / НЕ для критериев, которые вы хотите добавить или. - Вы можете вернуться к обычному поиску, нажав кнопку Отмена.
A technique based on artificial neural network (ANN) is proposed to extract the electromagnetic properties of reflection-asymmetric samples from reference-plane-invariant (RPI) scattering parameter measurements. It first determines reference plane transformation distances and then extracts the material properties. The number of neurons in the hidden layer of the ANN model was evaluated subject to accuracy and time constraints. We examined the conformity of the dataset of the ANN model and the required time for the training process by considering different numbers of neurons in the selected hid ...Более
A microwave method is proposed to determine the forward and backward propagation constants (gamma ⁺ and gamma ⁻) and the wave impedance ( z_w ) of reciprocal and non-reciprocal microwave networks whose positions are not known within their measurement cells (position-insensitive). The proposed method relies purely on analytical expressions and can also evaluate the reference plane transformation distances. Scattering parameter measurements at the X-band (8.2-12.4 GHz) of a reciprocal network (a waveguide straight) and a non-reciprocal network (a microwave phase shifter) arbitrarily positioned i ...Более
The use of online tools is a common practice for evaluating the accessibility of a website, identifying problems, and providing useful feedback on how to fix detected issues. For ease of accessibility validation, many tools have been developed and implemented successfully over the years. Yet, the results of these tools show differences in terms of coverage, correctness, and reporting-related issues. In this study, we compared online accessibility evaluation tools to understand to what extent they differ in detecting accessibility problems in websites. A total of 41 government websites of diffe ...Более