In which case does the transformation matrices T1, T2 always exist?

Suppose each element of matrix A is the linear presentation of n independent variables. And matrix B is the formed by such n variables. The question is, does there always exist T1,T2 that enable...

08 September 2019 195 7 View

Is there an internal connection between linear systems and decentralized systems?

Generally speaking, a linear system is solvable and a decentralized system can be solved more efficiently.

04 May 2019 5,487 6 View

How to obtain all the possible T of the folowing matrix equation via matlab?

Equation: [a b 0;0 0 c]*T=[a b 0;0 c c]. Suppose a b c are known varibles. T is a matrix. When I use matlab to solve this equation, there comes a warning "The system is rank-deficient. Solution...

03 April 2019 2,728 11 View

Under what condition will square matrixs follow the commutative Law of multiplication?

To make two square matrixs A and B satisfy the commutative law of multiplication, say, AB=BA, at least one of the following conditions is required: Condition 1: A=B. Condition 2: A=kI or B=kI....

02 March 2019 7,336 31 View

Is it practical to apply learning algorithm to real time control systems?

Learning algorithms can enhance the adaptive ability of the control system, but they tend to require iterative calculation, which may influence the real time performance .

10 November 2018 7,038 3 View

Is there an artificial intelligent technology using no machine learning algorithms?

As the title suggests.

09 October 2018 3,277 0 View

What is the right way to learn modern control theory?

The complicated mathematical formulas and theories is too abstract and tedious for me. How to develop the interest in modern control theories?

08 September 2018 8,542 4 View

Why all the matrices have to be rectangular?

Why not arrange the matrix elements in triangular lattice, or other other topologies?

08 September 2018 3,898 6 View

What's the relationship between machine learning, statistics and optimization?

It will be great if there is an example to show the differences of the three fields.

08 September 2018 6,125 1 View

Is there a deep reason for using the squared modulus of the wave function as the probability density of the existence of the particle?

I think we were all surprised at the first time we got to know quantum mechanics that the squared modulus of the wave function is the probability density of the existence of the particle? The role...

28 February 2021 6,282 9 View

Benefits of the 24 welled plate?

We have always used the 96 welled plate, the 48 welled plate but apparently there is much evidence on the 24 welled plate and above all its benefits.It states it is the same you would use on ELISA...

28 February 2021 1,149 1 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

How to replicate the well conditions of a crystal hit with 20%(w/v) isopropanol?

I had a crystal hit in a well with 0.1M HEPEs pH 7.5, 10%(w/v) PEG 4000, and 20%(w/v) isopropanol. Why is isopropanol in w/v here if it's just solvent? How do I recreate this well condition?

25 February 2021 9,761 1 View

Purification of proteins from baculovirus-infected insect cells?

18 February 2021 6,665 6 View

How to visualize stress in a coating defined by "Skin" in Abaqus?

Hello All! I'm trying to model a contact between a coated substrate and a tip in Abaqus. The coating is ultra-thin compared to the geometry of the substrate. So I defined the coating using the...

16 February 2021 1,594 3 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

Should the AUC in a concentration-time graph of a subcutaneous implant be roughly the same for poeple?

I have 2 concentration time curves of a subcut drug implant. the first group has a peak around the 50 day mark where as the second group does not. Both groups received the same implant by the same...

10 February 2021 2,305 3 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 is the best analytical software for XRD data?

How can I determine any phase from the powder XRD data and how can I determine the morphous or amorphous state of the sample from XRD data?

09 February 2021 7,867 5 View