What is the damping coefficient of Well's/impulse turbine that may be introduced into a mechanical oscillation model to simulate the PTO damping?

In tank experiments, it is easy to simulate the PTO damping by the use of orifices, however in modeling full scale and real conditions the trurbine damping coefficient must be added to the water...

31 January 2021 7,325 1 View

Do the exams for students in electronic education have the same credibility in terms of measuring and evaluating learning as traditional education?

Educators around the world face a new challenge of how to conduct exams to assess what students have learned after the shift towards e-learning following the closure of nearly all universities...

21 September 2020 4,180 15 View

What Features Should an Online Exam System Include?

ith the development of Internet technology, online examination has become more Polar because it helps people save a great deal of energy and time. As an effective and efficient method of teaching...

21 September 2020 2,814 12 View

How can I create pre- and post-holiday dummy variables in EViews or Stata?

I have daily closing values of multiple stock indices and i have lists of public holidays for the whole period. I want to inspect the existence of a holiday effect. My regression equation is as...

23 May 2020 5,456 12 View

ANSYS Divergence problem?

How can i solve this error Error: Divergence detected in AMG solver: pressure correction Error Object: #f ?

14 September 2018 9,210 3 View

How to determine the loss of function of a protein in vitro?

I am trying to find the best method to determine the effects of adding an inhibitor on the function of one protein ( transmembrane) in cell culture. Thank you!

15 August 2018 7,737 5 View

What is the difference between machine learning and deep learning?

I'd like to find a simple way to understand the deep learning vs machine learning

22 May 2018 542 8 View

Which is the best sample(s) to assay markers of oxidative stress in children?

I want to do assay for markers of oxidaive stress in different diseases in pediatric age group. Which of these samples is the best (serum, plasma, tissue fluid, RBC's)

06 November 2017 941 2 View

Do you think that educational curricula should be developed to be a mixture of traditional and electronic education?

Based on the interruption of the educational process in many universities and schools around the world due to the Corona pandemic, do you think that educational curricula should be developed to be...

01 January 1970 6,434 82 View

How times does it takes for the formation of the biofilm? and how time does it take for inoculation?

Using two different bacteria with different functions at the same time by using biofilm, how does it take for the formation of the biofilm and how does it take for the inoculation, and is there...

01 January 1970 1,636 5 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

Anyone plz suggest relevant topic for research in image processing+Deep learning.?

I have selected brain tumor images ...but now found that already lots of research done n this topic.

03 March 2021 5,774 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

Chlorinated organic formation in odor control scrubbers using hypochlorite?

I'm involved in a study of odor control technologies for municipal wastewater treatment plant. One of the control options involves a chemical 2-stage (acid/alkaline) packed bed scrubber. The...

03 March 2021 3,661 2 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

What analysis to choose with a large neste dataset and clearly skewed or kurtotic distributions?

Hello! I have a dataset of n=3000 nested within 8 countries with approximately 200 or 400 responses in each country. I originally planned to perform multilevel modelling with 4 dependent variables...

02 March 2021 6,865 1 View