Why use Gaussian elimination to solve linear equation?

For liear equation y = A*x, why use Gaussian elimination to solve the linear equation other than calculating multiplication of inverse of A and y directly?

10 November 2017 229 5 View

What is the significance of conjugate prior in variational Bayesian inference?

We prefer to use conjugate prior for the Bayesian model. Using variational Bayesian inference, conjugate prior is also preferred. However, in the update procedure of Bayesian inference, it seems...

07 August 2017 8,663 3 View

How to use transfer learning by training VGGnet?

In stanford CNN course, it is stated that we can use the available Convnet for transfer learning. (http://cs231n.github.io/transfer-learning/) I saw that some guys use VGGnet for transfer...

06 July 2017 779 4 View

How to check whether a person has a scarf around his neck in an image?

Hello, everyone, I encountered one problem: to detect whether one guy has a scarf around his neck or not. I have video images. The person in the images are with various ages,with various colors...

05 June 2017 9,788 6 View

What is the best algorithm for total variation?

02 March 2017 778 6 View

Is calculation of Total Variation problematic?

For image processing, unlike the methods which split the image into pitches, total variation is on the whole image. In this case, for an image with size n by n, what is the complexity of total...

01 February 2017 578 2 View

Difference among Windows, ATL, CLR General, MFC in Visual studio C++?

10 November 2016 996 0 View

How to estimate the parameter of a linear system?

10 November 2016 2,342 1 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before?

Question to you and THEM, the New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before? There appears to be a core problem for...

02 March 2021 3,024 2 View

I have designed reflectarray element and feeding it though Horn Antenna on HFSS. After full wave simulation, I am not getting desired results?

I have designed reflectarray element to generate OAM beams at 5.8GHz and feeding it though Horn Antenna on HFSS. After full wave simulation, i am not getting desired results i.e Radiation pattern...

01 March 2021 9,701 5 View

Does the circuit modeling for planar monopole antennas using Foster canonical forms give good approximation?

Hi researchers, I am searching for some accurate way to do the circuit modeling of planar CPW-fed monopole antennas. I have gone through the literature where mostly circuit modeling is done using...

28 February 2021 7,016 1 View

Microstrip antenna design tutorial of HFSS 3D layout module ?

I have designed a 24 GHz rectangular antenna on HFSS 3D model and got desired results while desing the same antenna with same dimensions I am getting resonance frequency at 27 GHz I am...

28 February 2021 4,426 2 View

What is Flat Lens Antenna?

28 February 2021 5,433 3 View

Compact antenna for the frequency range 1 MHz-5 MHz?

Hello everybody! I have a problem with developing a compact antenna for the 1MHz-5MHz frequency range. Tell me what type of antenna can be used and what books and articles to read to perform this...

27 February 2021 7,710 4 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 View

Efficiency of Proximity Feed Patch Antenna ?

Greetings to all of You! I have searched some research papers for the designing of a proximity coupled patch antenna. Researchers are talking about the impedance bandwidth of the antenna but...

24 February 2021 7,662 3 View

2D or 3D phased array antennas??

Dear All, I will start my PhD maybe this year regarding phased array antennas. I'm interested in to find more detailed information about 3D phased array antennas and 2D phased array antennas. Then...

21 February 2021 368 3 View