Deformation gradient in umat subroutine ?

Hi all, i'm coding a umat for hyper-viscoelastic behaviour and i wonder what formula use for the exact deformation gradient tensor F since dfgdr0 and dfgrd1 passed into the umat (according to...

04 April 2017 7,773 2 View

Please experts, what are the reason for using senen-type scale (seven-point scale)?

03 February 2016 5,605 5 View

We are looking for research in burnout and psychosociological risks (Karasek model)?

we are carrying out a study about the relationship between mental health and job demand-resource model of Karasek, but the setting of this study is in special education centers (schools of persons...

02 February 2016 7,945 1 View

Does anyone deal with sintering of 3Y-YSZ nano sized particles?

23 January 2015 9,762 6 View

How to build a multilayer system with Oommf?

Used in giant magnitoresistance, for example Fe/Cr/Fe. Thanks.

30 May 2014 7,672 1 View

How can theoretical density be calculated?

My research is in ZrO2 Y2O3. I want to calculate the theoretical density of this material, but I do not know how I can exactly calculate it. There are different methods which you will find them...

11 May 2014 1,112 19 View

Can anyone help me with XRD analysis?

I'm new with XRD pattern analysis. I used it for that Jade5 to detect the phase of ZrO2Y2O3 with 3mol% Y. After splintering in different temperatures and holding times, I found that there is only...

13 April 2014 6,758 4 View

Resources for learning Jade5 Software for XRD analysis?

I want to learn Jade5, which is used in XRD analysis. Is there any soft copy books or references? Also, it would be good to have tutorial videos.

16 January 2014 8,271 1 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

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

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

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature)?

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature-based reflection)? Thank you for your time and for...

03 March 2021 2,870 3 View

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View

Can NFL theorem be valid in infinite search space in ML?

NFL theorem is valid for algorithms training in fixed training set. However, the general characteristic of algorithms in expanded or open dataset has not been proved yet. Could you show your...

01 March 2021 1,189 3 View

Does anyone know how to plot my station to a section plot on Ocean Data View (ODV)?

I made a vertical section plot with WOA .nc file on ODV, and now I want to plot my stations (csv. file) in it. Does anyone know how to import my points to the section? They are two different...

01 March 2021 3,610 1 View

How to address this issue in the analysis of Real-Time PCR results?

To dear Researchers, I was analyzing a series of concentration for estimation of Real-Time PCR efficiency. The concentration was 1:10. I used MS-excel to evaluate Slope. The result of slope was -8...

01 March 2021 8,683 4 View

How to arrange coordinates and extract climate dataset out of MPI-ESM-MR netcdf files?

Have a nice day everyone, I'm stuck in extracting datasets out of MPI-ESM-MR netcdf files because the latitude ranges from -3*10^6 to 3*10^6 and longitude ranges -5,9*10^6 to 5,9*10^6. Plus, the...

28 February 2021 912 3 View

Is there any Machine Learning/AI algorithm that lets you predict with incomplete features without missing value imputation process?

For instance, the model is trained with A,B,C,D,E features to predict F target. Then, I want to make prediction on a new data, but with only A,C,D,E is known without doing missing value imputation...

28 February 2021 1,556 6 View