How to achieve the convergence of the solution in COMSOL Multiphysics?

Hello! Please tell me how to achieve the convergence of the solution ... In Newton's method I set 50 iterations and the finest grid, but the solution still does not converge I would be grateful...

23 January 2021 935 5 View

How to set up a PI controller for a wind turbine pitch angle control system?

Hello dear colleagues and experts! When developing a model of a wind generator, I faced the problem of adjusting the PI controller for the pitch angle. I read a lot of articles, but the PI...

27 October 2020 9,339 10 View

What is the meaning of an adjustment for confounding factors in the context of multiple regression analysis and epidemiology?

I have reformulated the question I mean a statistical approach for adjusting values using multiple linear regression which is often used in ecological studies (e.g. Urashima et al., 2020 Int J...

13 October 2020 3,142 5 View

ADP-Glo test for ATPase activity of NLRP3?

Hello colleagues! I want to investigate the atphase activity of nlrp3 in the ADP-glo test. but I don't know what type of buffer to use for analysis. Can anyone help me?

12 September 2020 7,596 3 View

Analysis of Neural Data?

I would like to know what are good sources (books, tutorials, references in general) for the application of Data Science to the field of Neuroscience (Analysis of Neural Data), and where could we...

04 August 2020 5,848 4 View

Is comparing some rates among the patients with respective rates in general population appropriate in epidemiology?

Is it appropriate to compare rates of (for instance) tea consumers among patients admitted to a hospital with some disease, with rates of tea consumers in general population in the same country?...

11 March 2020 5,560 3 View

What is the difference between "exact polarizability" values and values beginning with "Polar" in the end of output Gaussian file? And which units?

Gaussian output contains a string "exact polarizability" with some values and also there are some values beginning with "Polar"in the end of the output? They have different values. What is the...

13 November 2018 3,646 3 View

Hello! Can anyone please explain the difference between static and dynamic hyper(polarizabilities)?

I'm trying to perform NLO properties calculations with Gaussian and I need to calculate first hyperpolarizability. I faced in literature with static and dynamic ones. Can anyone explain the main...

12 November 2018 1,699 4 View

Could you advice a software for DNA sequence annotation in printed materials?

Sometimes you have to represent a nucleic acid sequence on paper, not as an image, but as a text with notes. Is there any suitable program (Windows OS) possible to divide raw sequence into pieces...

24 September 2018 1,939 2 View

Question regarding the representation of the E(X*X^T) matrix of a random vector with a non-negative support?

There is a random vector x=(x_1,x_2,...,x_n) with a non-negative support. There is additional constraint Ax=b. Is it true that E(x*x^T) belongs to the set conv{yy^T

30 May 2017 4,647 7 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 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

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

Do you know any MR image dataset?

I would like to research on MR images (0.5T and 3T). Can you please suggest some websites that I can download dataset including both 0.5T and 3T MR images? Thank you.

02 March 2021 7,735 3 View

Is it possible to remove a preprint posted by a journal which is already rejected?

As we know many journals are posting preprints (DOI) in advance before the peer-review process. However, there is no guarantee that the preprints get published. The journal's reviewers undergo the...

01 March 2021 5,778 2 View

Which is suitable for use with Python? MySQL or SQL Server?

Which is suitable for use with Python? MySQL or SQL Server? What is your suggestion?

01 March 2021 3,422 3 View