Are quantitative surveys Inductive or Deductive?

I plan to do an online survey to gather responses from participants using a widely used stress scale. The results are either low, medium or high and out from this, I can infer as to which level of...

28 December 2020 7,307 6 View

Can I modify the Perceived Stress Scale (PSS) instrument?

I plan to use this tool for a quantitative study "proposal" to measure perceived stress. However, I am confused this tool because this tool (by Cohen) has ten questions that will assess stress "IN...

04 December 2020 8,268 4 View

Does anyone have any recommendations for transfecting a large plasmid into mammalian cells?

I'm trying to transfect a large plasmid (about 15 kb) into HeLa cells using Lipofectamine 2000. I've tried following the manufacturer's recommendations but can't seem to get much, if any,...

26 November 2020 5,764 4 View

Statistical Analysis for Online Survey Research?

I plan to conduct an online survey via Survey Monkey. It is a quantitative study that will measure perceived stress and I plan to use purposive sampling. No correlations, just a simple survey...

13 November 2020 936 3 View

What is the best Sampling Method for an Online Survey?

I wish to assess the level of stress among a specific group of nurses redeployed to other hospital settings (i.e, research nurses) during the COVID pandemic in my research proposal. May I ask for...

05 November 2020 4,671 3 View

The Perceived Level of Stress among a specific group of Nurses during COVID-19. Quantitative or Qualitative?

Hi. I want to create a research proposal assessing the perceived level of stress among a certain group of nurses during COVID-19. (For example, I might focus on Research Nurses who were deployed...

29 October 2020 8,815 10 View

How to convert color scales? Gardner to Lovibond to Apha to Ph. Eur ?

Hi there, Is it possible to convert between color scales like Lovibond, Gardner, Apha or the solutions mentioned in Ph. Eur ? I found descriptions of spectophotometers where e.g. EBC and SRM were...

07 October 2020 5,045 1 View

How to measure correctly on Agilent/Varian Cary 100? Zero/Baseline Blank/Reference- Single vs Double Beam?

Hi, we have "inherited" an older UV-Vis spectrometer - a Cary 100 Bio - which is still available now from Agilent. As no one is experienced with this device i read available information i could...

31 August 2019 4,698 6 View

Can you help me visually identify the mould genera on these contaminated samples?

Hi, i have a fluid sample of a plant extract that over the weekend grew a massive contamination (lab bench - room temperature). So to find out which of the used ingredients (dry substances or...

16 April 2019 9,612 15 View

Can any of the researchers tell me if he has used genetic algorithms in antenna geometry optimization problems, particularly phased arrays?

That one of the researchers from his point of view of his experience in the subject

10 December 2018 6,283 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

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

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 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

Do you know any MR image dataset?

I would like to research on MR images (0.5T and 3T). Can you please suggest some websites that I can download dataset including both 0.5T and 3T MR images? Thank you.

02 March 2021 7,735 3 View