What are the engineering methods for feature selection in machine learning?

Hello researchers, I have a dataset that contains 36733 instances, What are the engineering methods to be used for feature selection in machine learning?

09 February 2021 363 11 View

How to improve the clarity of the exported maps from GIS software?

I am performing mapping for some hydrogeological items using GIS and I have a problem with the clarity of the exported maps from it even after I raised their resolution into 1000 dpi, how can I...

25 October 2020 1,804 8 View

Effect of initial dye concentration ( methylene blue) on removal percentage?

i am studying the variables (study of initial dye concentration ) for removing methylene blue (mb) using a composite that i prepared. the results showed that on increasing dye conc, the removal...

01 October 2020 3,016 3 View

What's the difference between using Collagenase P and collagenase A to dissociate mice pancreas tissue into single cells?

Trying to isolate single cells from pancreas for FACS cell sorting. The protocole suggested 0.5mg/ml collagenase P +0.1 ng/ml DNase I per 1 ml of HBSS. Using collagenase A, the tissue wasn't...

14 January 2020 8,866 2 View

Urgent- Historical data of FTSE 100(UK) NIKKEI 225(Japan) NYSE composite (USA) BSE Sensex for time period 2000-2019?

Can anyone help me in providing historical data of FTSE 100(UK) NIKKEI 225(Japan) NYSE composite (USA) BSE Sensex for time period 2000-2019. In yahoo finance, data is downloading in unknown file...

27 November 2019 6,731 3 View

How is phase of the charge oscillation related to the size of a nanoparticle ? Taking the case of passive elements of yagi-uda nanoantenna .

Passive elements smaller in size(with respect to feed element) show capacitive behaviour while the ones with larger size are inductive .

24 May 2017 3,280 3 View

How to efficiently generate a standard curve for real time pcr assay using plasmid DNA?

19 February 2017 3,264 3 View

How can we change the saturation degree of a soil using FLAC 2D software and UBCSand model??

UBCSand model is a user defined model to simulate liquefaction.

29 February 2016 4,923 3 View

Should a plant extract be dissolved in DMF or DMSO only for antimicrobial assay?

the extract dissolved in ethyl alcohol gave negative results...could it be due to poor diffusion to agar?

10 October 2015 1,579 9 View

How do I get rid of triethyl amine in a reaction?

Triethylamine was added in excess to a reaction, so how can I get rid of it from my product?

26 November 2014 2,305 12 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

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 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

Irradiation data for JAPAN?

Hi, Could you help me to get the latest (2019, 2020) solar resource data for a particular site in JAPAN? PV GIS and NSRDB data are not in reach to JAPAN, I'm looking for some other database for...

03 March 2021 961 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

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