How often machine learning is used for STEM research nowadays?

I am an undergrad physics student. Nowadays, I observe a tendency among physicists to learn machine learning. Surely, it's highly useful to know ML when you have to deal with tons of data from...

14 January 2021 6,431 4 View

Is it justified to compare the free energy change of two reactions and conclude one is more favourable than the other?

Suppose we consider the binding of a ligand L to a metal M, M+L=ML and M+2L=ML2 . We compute the Gibbs free energy change for two reaction using DFT. But can we compare this two free energies to...

12 January 2021 5,893 4 View

Does Tea Garden proves to be an alternative to forest landscape?

Is there possible that the Tea Gardens proves to be an alternative habitat to forest dwelling organisms? If yes, what pressure do they face in relation to anthropogenic pressure?

03 January 2021 429 13 View

How to run solver in Nektar++?

Hi! I am introducing myself very new to Nektar++ (https://www.nektar.info/) opensource code. I installed the code according to the user guide manual. The installing process shows success. --...

02 January 2021 8,977 3 View

How to segregate electrode-dielectric and dielctric-dielctric interface polarization after Capacitance VS Freq. measurement using impedance analyzer?

After measuring the capacitance vs frequency for my MIM capacitor consisting of alternate layers of TiO2 &Al2O3 , there is a rise in capacitance value of ~ 20-160 nF at 100 hz, starting to...

17 December 2020 7,786 3 View

Relating SOMO-LUMO gap and stability for a Open shell system (Unrestricted Calculation)?

It is well known that for a closed shell (all electrons are paired up) molecule, the HOMO-LUMO gap is related to its stability. However, I often see that the same argument is used for open-shell...

01 December 2020 6,771 4 View

How can we block ROS production in-vivo in mice?

I want to block ROS production in mice and, therefore, looking for probable inhibitory compounds/protocols. I would appreciate it if anybody shares his/her knowledge of this.

25 August 2020 7,265 4 View

Where to get dark networking data?

Hi, I want to study the dark network structure (social network for criminals). I want to study the network connections, important factors, significant leaders of the network. I already found one...

23 August 2020 4,239 3 View

How do I generate the residuals in STATA after a CCE-GMM estimation?

I used the following codes to use the CC-GMM estimator developed by Neal (2015). I have treated the immigration variable (LIMM) as the endogenous variable. I attempted to instrument the endogenous...

16 August 2020 9,999 4 View

Should I use the absolute value of a correlation coefficient?

I have calculated the Pearson correlation coefficient for two sets of values using excel. I got the value in the negative number. I know that the idea of getting a negative correlation means that...

24 July 2020 6,317 13 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

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

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 3 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View

What is the difference between genotype and haplotype data in the ped format?

Hi everybody In the ped format for genotype, alleles of any SNP are represented by two columns (one for each allele, separated by a space). Is a column sufficient for the haplotype to...

27 February 2021 1,965 1 View

Is there an open source free software for text mining and sentiment analysis?

I am looking for a free software for text mining and sentiment analysis for my research on customer review mining (it involves calculating polarity of attributes,opinion oriented information...

25 February 2021 1,920 6 View

What software programs can directly simulate Additive Manufacturing Directed Energy Deposition (DED)?

I understand there are a lot of software programs that can simulate DED by going through specific modeling, simulation, and commands. For me, that was time consuming and results were not accurate....

24 February 2021 4,428 3 View