How long can we consider that the data obtained with qualitative social research methods are "current"?

I cannot find any reference that deals with the temporal validity of qualitative data. I think there is a gap in the methodological literature on the temporal validity of the research results and,...

05 February 2021 9,788 20 View

Can I use the images of Collection 1 Level 2 Landsat 5 TM / Landsat 8 OLI to perform vegetation indices right away?

I'm aware that in order to perform any vegetation index like NDVI, SAVI or OSAVI you need to do some atmospheric, radiometric and terrain corrections. I'm pretty sure that Level 2 images from...

21 December 2020 4,088 3 View

BSEM/SEM approach?

Hi all! I'm getting into BSEM approach and I am specially concerned about when it is recommended or not to use this model. I have tested a BSEM with a small sample obtaining excellent results,...

07 September 2020 3,919 3 View

Unable to perfiorm raster to-table join in ArcGIS?

Dear all, I am trying to replicate some results from a publication. There, one of the datasets they use is WISE30sec map (available for download here:...

18 February 2020 6,906 3 View

Low 260/230 ratio using Qiagen DNeasy kit?

Recently I performed a DNA extraction using Qiagen DNeasy kit and the results show a 260/230 ratio of 1.05 likely due the presence of phenol or other organic contaminant... I have read that you...

16 February 2020 787 3 View

Why is the TMB substrate turning blue without being in contact with the sample and in the dark?

Hi everyone, last time I was doing an ELISA without exposing it to the light and before I added the substrate it was turning blue. Do you have any idea or suggestion of a better substrate?, the...

03 January 2020 1,294 7 View

How data is normalized in Transcriptome Analysis Console (TAC) Software?

I'm using TAC software 4.0.2 (Affimetrix) for the first time to analize differential gene expression in two groups of samples (control and treatment). I have problems with the normalization step...

18 November 2019 7,146 3 View

Importance of drying-time after using gelatin as coating?

I am culturing stem cells on plates coated with gelatin. After finding so many variations of drying time in different protocols, I am wondering what is the reason? In other words, why is it...

09 September 2019 9,415 3 View

How to interpret ordinal logistic regression in Stata with ordinal dependant and independent variables?

My question is very straightforward. I have different ordinal independent variables (4 categories), and I am trying to regress it on different ordinal and nominal variables. I want help on how I...

09 July 2019 5,769 1 View

Could you suggest any scale to assess parents' satisfaction with their children's schools?

Hi all! I'a looking for a scale to assess parents' satisfaction with their children's schools. I have found some different papers about parents satisfaction but no one seems to offer just what I...

10 December 2018 8,430 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

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 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