Large number of DOFs ODE system?

More Vladimir Martinusi's questions See All

How can I edit suggested publications?

Hi there! I regularly receive suggestion about papers and authors that are totally out of my area. Does anybody know how I can fix this? Thank you!

01 March 2021 9,574 4 View

PUC19 as a transfer plasmid for lentiviral delivery?

Hello, Is it possible to use pUC19 as a transfer vector to be packed in using the second generation viral particles packaging system( pMD2.G; psPAX2 plasmids)? As far as I understand it there is...

28 February 2021 4,868 2 View

Cox regression baseline hazard?

Dear colleagues, I would like to make a mathematical equation of Cox regression model, however I am stuck with baseline hazard. I clearly understand interpretation of coefficients, but I can't...

24 February 2021 6,207 3 View

How to calculate the electric field in the rotating frame (the question in the general relativity)?

In the classical electrodynamics, there is one problem - to find the EM fields created by the charge moving with the constant velocity in the circular orbit or in the helical path (free electrons...

12 January 2021 3,689 1 View

Do you know anything about Elena Bokus, the early 20th Century Architect / Architectural Designer?

The available research of early 20th century history of architecture in North Macedonia, suggests that probably the first female architect / architectural designer was Elena Bokus (born in 1893...

23 December 2020 2,039 2 View

Can you recommend a short and free Deep Learning course that is sufficient to enable implementation on Java?

It would be best if the material is available on the web, a pdf version is also possible. If you still have knowledge of a good video course, please share.

29 November 2020 4,769 2 View

Why the Helmholtz decomposition theorem is not applicable to the electrodynamics?

My question is caused by one curious fact of the electrodynamics. It is commonly accepted opinion that the electromagnetic fields can at least formally be decomposed onto the rotational and...

10 September 2020 8,668 3 View

COS7 cell transfection - do you have a good protocol?

Dear all, lately we ran into trouble with COS7 cell transfection, we get low transfection rate with the protocol we use. Do you have a good transfection protocol? Preferably Calcium transfection...

23 May 2020 842 2 View

Can an electron and a hole have one common coordinate y_0 of the center of the quantum orbit in a two-dimensional semiconductor in a magnetic field?

Can an electron and a hole have one common coordinate y_0 of the center of the quantum orbit in a two-dimensional semiconductor in a magnetic field? (if they have the same or opposite directions...

16 January 2020 5,009 8 View

What is the density of excitons on a two-dimensional semiconductor in an external magnetic (and without magnetic) field?

What is the average density of excitons on a two-dimensional semiconductor in an external magnetic (and without magnetic) field? What is the dependence of this density on the magnetic field B?

12 January 2020 173 2 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 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

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Sample dilution for quantitative analysis using ELISA?

If the detection range is in ng/ml but the reference range is in ug/ml for a molecule or protein in serum or plasma .how to dilute and what is the initial volume to be taken for quantitative analysis

02 March 2021 7,670 3 View

Kåre Olaussen

Fermi-Pasta-Ulam problem, Toda lattice. Explicit equations are a web-search away.

For more general models consider f.i. molecular dynamics, dynamics of galaxies, ...

Stam Nicolis

What's special with thirty degrees of freedom? And this number alone isn't sufficient for saying anything useful.

Igor Goliney

30 variables, that's about methane molecule CH4.

Gryllakis Evangelos

A simple mechanical beam, fixed on its one end, subjected to a bending force to the other end. Model that with non linear springs. Especially duffing. Then descritize it into 30 elements. Ready. K thx byeee.