Is there any method to transform a coupled nonlinear differential equation that is not in companion form to equivalent regular form or companion form?

How to perform statistical analysis of coefficients extracted from transform techniques?

I am studying the potential of DCT and FFT coefficients extracted from a signal to classify the different objects that emit the signal. I applied the Shapiro-Wilk to confirm that data was not...

01 March 2021 8,079 2 View

What is the difference between L1 and L2 regularization in machine learning?

L1 and L2 regularization

28 February 2021 4,187 3 View

Any specific pipeline or parameter to analyse total transcriptomics study of brain tissue samples?

I have two groups of brain samples, control and treated for example. It was total RNA nova seq sequencing. I tried all the available pipeline like: star+rsem+deseq2, Hista+stringtie+cuffdiff,...

27 February 2021 356 6 View

Is there any teachers based in UK who would like to take part in my study?

24 February 2021 4,833 3 View

How to analyse a (perceptual) study using differing/comparable sets of stimuli?

I plan on running an online perceptual experiment that has, let's say, 100 unique video stimuli altogether. Since these are too many to be rated by every participants, I would like to present the...

15 February 2021 7,444 2 View

How do you interpret theoretical vs. experimental reaction orders with respect to a reactant?

I recently came across a paper focusing on the hydrodeoxygenation of oxygen-containing compounds. The paper linearized the rate equation in order to determine the experimental reaction order with...

14 February 2021 8,254 2 View

Can I get the design of circular cylinder to fix thermocouple on the surface and cartridge heater in core ?

Respected Scientific Community. I'm interested to carry out experimental studies on a circular cylinder. But even after doing literature review I unable to get the exact design of the cylinder...

10 February 2021 6,221 1 View

What could be the cause to have an E.coli DH10B transformed with pUC18 to grow in MKL + ampicillin but is not LAC+?

Hello everyone, I did a transformation of E. coli DH10B using pUC18 plasmid. The bacterias did grow on MKL medium with ampicillin but the colonies showed a white/pink colour and the medium was...

08 February 2021 9,720 3 View

Any recommendations for open-source survey form builder, which has option for semantic differential scale questions apart from Likert scale?

Asking this as Google forms doesn't allow multiple items in a semantic differential format.

04 February 2021 5,869 4 View

Can I know how to apply contourlet transform for signals in MATLAB?Must I first convert 1D signal to 2D image in order to do this method?

01 February 2021 3,735 3 View

Hady Joumaa

Hi Abhinav,

I need first to see the equations before I can suggest a transformation. There are so many types of nonlinear equations. I am afraid some may not possess a feasible transformation. So let's the equations and we can suggest accordingly.

Best...

Adil AL-Rammahi

see the books of integral transforms such as Kneddon where there are 7 kinds of transforms.

Abhinav Sinha

Dear Hady,

Its difficult to provide a specific equation because many a times I encounter such mathematical constructs.

For e.g., the mathematical model of stepper motor is coupled and nonlinear. Generally DQ transformation is done to remove trigonometric terms but is there any method to make it simpler in controller companion form to facilitate easier computation and simulation?