How to check the validity (including accuracy and precision) of a questionnaire for a cross sectional study?

More Deepak Kumar Bandari's questions See All

How can we eliminate fake journals?

These days many fake journals are in existence and many of the students are publishing their research in such. As a result the value for the work done will not be endorsed at what it is deserved....

05 June 2015 7,881 2 View

Which type of impact factor is valid?

I came across various types of Impact factors like GIF, SJIF, SCImago, h-Index, Eigen factor etc .Please help me in knowing more details of these and which one among them is valid.

08 September 2014 9,198 2 View

How to estimate the quality of a magazine?

As impact factor, citations, ICV value help in estimating the quality of a journal, please let me know if there are any such predicting values which help to determine the quality of a journal?

02 March 2014 8,630 5 View

What is reversing of diabetes? Can diabetes be reversed - can anyone help?

Few literature says diabetes can be treated and reversed without the medication. If it is true what may be other methods to be followed to reverse diabetes. Please help me in finding the...

31 December 2013 4,960 5 View

Joint behaviour in Abaqus is not captured well?

I am working on roof joint and trying to simulate the behaviour in Abaqus. I am successful in running the model but the final graph does not follow the experimental curve in the negative direction...

01 March 2021 6,661 3 View

How to modify Johnson cook equation in ABAQUS?

I wanted to add an extra parameter to the existing Johnson cook equation in the ABAQUS simulation. How to add those extra parameters. Ref: A modified Johnson-Cook material model with strain...

28 February 2021 4,841 3 View

How to find the right number of integration points in second order 3d finite elements?

I am familiar with finite element simulations and numerical schemes like the Gauss Legendre quadrature. I also know that the Gauss integration yields exact values for polynomials up to degree 2n-1...

27 February 2021 6,818 3 View

What could be the reason for not having further low chi square value (better agreement) in my refinement result?

I have tried every combination of parameter changes and after that i have a poor chi square value. I can't get it lower any further. I know there have been a lot of discussion about Rietveld...

26 February 2021 8,480 3 View

Can the problems of overfitting be solved without cross validation?

For an overfit data set the cross validation error will be much bigger than the training error. Is it true or false?

23 February 2021 3,616 2 View

How to manage western blot for proteomics data validation?

Hi Everyone, I am a bigginer in western blotting and I am trying to use it for validation of my proteomics data. I have: two regulated proteins with molecular mass of 40 and 73 kDa one control...

23 February 2021 6,671 4 View

Which software is best to analyse multi-phase fluid flows ?

Hello everyone, hope all is good. I want to analyse multi-phase fluid flow through pipe, which software is best to do so ?

21 February 2021 4,230 8 View

Can anyone provide an advice on running a validation study of a commercially available product in collaboration with the manufacturer?

We are planning to run a study validating a commercially available product (i.e. software) and while we initially planned to do it independently of the manufacturer, they heard about our intention...

17 February 2021 2,295 3 View

What are some alternatives to the Self-Directed Learning Readiness Scale (SDLRS) developed by Dr. Lucy L. Guglielmino?

The Self-Directed Learning Readiness Scale (SDLRS), also known as the Learning Preference Assessment (LPA), was developed by Dr. Lucy M. Guglielmino in 1977 to measure learners' attitudes of and...

15 February 2021 3,095 4 View

Is there any effective FEM solver to perform simulation of balloon inflation with large deformation (e.g. 300% strain)?

Hi! Thank you for your time, attention, and support. I am currently using FEM solver Abaqus to perform a set of balloon inflation simulations, trying to understand the deformation shape, stress,...

14 February 2021 2,524 4 View

Abdulqadir J. Nashwan

please find the following useful link

http://ocw.jhsph.edu/courses/hsre/PDFs/HSRE_lect7_weiner.pdf

Deepak Kumar Bandari

Thank you Mr Abdulqadir J. Nashwan, the document was very informative. I would be grateful for you if you can provide more information on this issue. Thanks again.