Which optimization algorithm is most efficient for fitting a regression model using training dataset?

The goal of regression model is either to minimize the prediction error or to maximize a classification accuracy depending on the type of the model. Is there any optimization algorithm that is...

10 February 2021 4,128 3 View

Any end to end machine learning project using predictive maintenance on production line to locate faulty parts and forecast the faults?

I am writing my master thesis and my tasks are: To locate faulty stations/features which lead to product failure at test time. Forecast failure to prevent it sometime before it occurs. recommend...

13 December 2020 3,688 3 View

How to construct complete 3D structure of a protein from two different PDB files containing two separate portions of the same protein?

Suppose, I want to model a protein's structure (containing total of 350 residues) for which there is no complete experimental structure available. However, I got two different PDB files each...

13 November 2020 9,110 3 View

Qiagen DNeasy vs QIAquick spin column?

Dear Fellows I wanted to confirm if I can use spin columns of QIAquick PCR purification kits for DNA extraction. We finished our DNeasy columns but still have reagents. And we have extra QIAquick...

03 November 2020 6,960 3 View

How to reduce number of mesh cells for non-uniform 3D objects?

I want to reduce number of mesh cells in my 3D non uniform model

12 October 2020 9,522 3 View

Is there any minimum limit of outside projections of shell side nozzles of heat exchangers in DNV standards?

Is there any DNV clause for shell side nozzles' projections of shell and tube heat exchanger. I want to keep the outside projection of the shell side inlet and outlet nozzles to 3" with 1" bore on...

29 September 2020 6,880 3 View

Hello, what method/model is suitable for estimating three dependent vars. influenced by other independent vars. in a time series analysis?

The dependent variable (petroleum security) is sub-divided into three categories (oil price, oil supply and oil reserve), and are determined by currency internationalization. So, which...

19 September 2020 8,149 1 View

How can I eliminate discontinuities in the end-effector plot of an industrial manipulator?

I am trying to solve a dynamic problem for a 3 DOF industrial manipulator and I keep getting funny end-effector plots for the first joint (see the figure). I have tried using the alternate...

21 June 2020 7,931 15 View

How can i obtain Parameters of Chinese trunk track irregularity power spectral density function using Matlab?

Please I need explanation on how to determine the parameters (A, B, C, D, E, F, G) of the Chinese trunk track irregularity power spectral density function from experimental data using the...

28 March 2020 8,752 3 View

How to validate ligand parameters ?

I wanted to perform a molecular dynamics simulation of a protein-ligand complex in Gromacs using the CHARMM36 force field. When generating the ligand topology file using CGenFF...

05 March 2020 2,041 6 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

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 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

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

What is the most Operating System (OS) which can be INSTALL on Tiny hard devices like Raspberry Pi (RPi) hardware ?

I'm targeting to deploy a mesh network and manually configure MANET routing protocols. I'm preparing scenarios, architectures, and hard devices needed to do that. Are there some step-by-step...

03 March 2021 1,931 5 View