How to model the effect of an individual level variable on a group level variable?

My research question is: do parents with low SES have a higher chance to send their child to a lower quality daycare service? Data have been gathered among parents (>3000) whose child...

14 June 2020 2,876 1 View

Can you stain live/dead cells in 3D tissue culture?

Hi Everyone, I am optimising a ex-vivo 3D culture of human tissues of +/- 300 um thickness. We want to know how many cells are alive and how many are dead at specific timepoints. I know I could...

03 December 2019 625 3 View

Mancova with nominal covariates?

16 January 2017 5,567 1 View

To what extent does the variation in VCEon of the dies in IGBT modules require the need of calibration to use it as a TSEP?

For my research on the topic of power cycling capability of IGBT modules, I need to measure the junction temperature of the IGBT dies inside the module. To acquire this temperature measurement, I...

06 October 2014 5,000 1 View

Is there any out there that could help me with any suggestions as to why this us?

I would like to hear from people with interest in this project or Artificial Intelligence and Biometrics Systems

01 January 1970 8,172 8 View

Logistical regression using SPSS for a dichotomous dependent variable, with an independent variable of 1, 2, 5 and 10 seconds?

I have an experiment with 28 participants The independent variable is the times 1, 2, 5, and 10 used as the cross hairs during a task These 4 times were tested using 4 different blocks, each...

03 March 2021 9,692 2 View

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

Energy minimization in LAMMPS using NVT ?

How do I do energy minimization in lammps with NVT ensemble ? I am using the following command and it does not seem to work. It stops at extremely high energy and gives me the error zero search...

01 March 2021 2,294 3 View

How to choose ANN number of hidden layers and nodes?

Hello, Could you please share any interesting research explaining how to choose the number of hidden layers and nodes per layer in case of regression problems using ANN? Thank you, any help would...

01 March 2021 6,200 3 View

Why is the sum of the elements in a row in a Q matrix equal to zero?

When explaining substitution models, the substitutions are expressed as Q matrix. Why is the sum of the elements in a row zero?

28 February 2021 3,864 3 View

Can anyone provide the Support vector regression code structure of LIBSVM MATLAB or python ?

Please, if Gaussian Parameter optimization is possible in this code structure

28 February 2021 278 3 View

How could I take into consideration the weights of observation in a system of seemingly unrelated regressions (SUR) in rstudio?

I build a model of 4 regression equations (probit and OLS) in R studio. I need to take the weights of observations into consideration. While it is simple to do so for every regression equation,...

27 February 2021 1,233 1 View

VIF very high, but correlation is low and coefficient is significant. Which one whould I choose?

Hello. I have a question whether if my coefficients (statistically significant) would be valid when VIFs are really high. In my model, there are independent variables(IV), moderating variables...

26 February 2021 956 13 View

Treating Intermediate Variable in Linear Regression Analysis in SPSS?

While performing the Linear regression analysis in SPSS version 26.0.0. my intermediate/mediation variable goes to the excluded section. Please share your valuable suggestion "How to restrain the...

25 February 2021 4,591 5 View

Cox regression baseline hazard?

Dear colleagues, I would like to make a mathematical equation of Cox regression model, however I am stuck with baseline hazard. I clearly understand interpretation of coefficients, but I can't...

24 February 2021 6,207 3 View