Can random sampling have inclusion criteria?

As random sampling means that everyone in the population have an equal chance to be chosen, can it have inclusion criteria? My research participants have been chosen based on the inclusion...

26 February 2021 6,905 10 View

Who wants to cooperate in the completion of an essay project on crisis management using neural networks?

Who wants to cooperate in the completion of an essay project on crisis management using neural networks?

21 September 2020 6,703 7 View

What are the real Phenomena which we can apply the Capotu conformable fractional derivatives ?

In fractional calculus many fractional operators, but their applications area unknown. Can you help me to determined the real Phenomena which we can apply the Capotu conformable fractional...

20 July 2020 3,287 5 View

ATR-FTIR: Unknown peak at 2360 and 2339 cm-1?

The sample of ssDNA & protein in Tris buffer has a small peak at the area, and no obvious peak at the fingerprint region. What is small peak represent? No observable peaks at fingerprint...

12 December 2018 6,380 3 View

Can you recommend simulations/games for statistics?

Can you recommend simulations/games for statistics as an in-class activity for undergrad students to teach them statistics, probability, distributions etc. as well as enjoying?

19 April 2018 1,492 5 View

How to assess a variable plays a role in a model as fixed or random effect?

01 March 2018 7,435 3 View

How to set the single-strand DNA structure for Gromacs MD?

Hi, I have a difficulty in preparing my ssDNA structure for Gromacs MD. First, I had used RNAcomposer to generate the 3D structure of my ssDNA. I had edited the structure from RNA to DNA by adding...

19 September 2017 8,636 4 View

Fit multiple plots using cftool in the same figure

21 June 2017 6,373 2 View

How do I amplify the full sequence of a gene?

Dear All, I am now doing a research about ABC transporter protein in oil palm. By taking AtABCG40 gene from Arabidopsis as my reference gene, I've blast it with oil palm database. I need to get...

12 May 2015 4,318 10 View

What is the molecular structure of the repeated Polyaniline?

Sorry for this very basic-should-be question. But does anyone know how exactly is the structure of the emeraldine salt polyaniline with 2 repeating unit? And what is the terminal for the...

16 September 2014 4,714 3 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

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