How to generate under dispersed count data with negative shape parameters using rnbinom or rnegbinom?

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Can we use number of malnutrition children in a family as a count data?

I would like to confirm number of malnutrition children in a family as count data to use poisson or zero inflated regression models.

03 April 2018 822 1 View

How can I add, estimate and interpret binary variable in path analysis?

I have observed binary variable [Ex. Low birth weight: Yes/No]. I would like to add this variable into path analysis. How can I interpret the regression coefficient of this variable?

01 February 2015 5,224 11 View

How can I use structural equation modelling [latent growth curve model] approach on children growth?

I have multiple repeated risk factors and 6 times points of children growth.I want to create a latent variable for growth change and how this affected by repeated risk factors.

31 December 2014 8,674 5 View

Does anyone have a reference to use repeated indicators used in structural equation model?

Actually I needed the examples and reference for structural equation modelling in longitudinal data with repeated predictors and repeated outcomes.

31 December 2014 7,889 4 View

Does anybody have the reference for log transformed mixed effect models on child growth?

Anyone have the reference for logarithmic transformation for both dependent and independent variables on child growth (mixed effect models)?

05 June 2014 984 5 View

How can I prepare virus for a TEM or SEM imaging?

I have virus (viral hemorrhagic septicemia virus) in suspension and the experiment will not involve cells. What level of TCID50 is preferred?

11 August 2024 3,115 1 View

How to learn more about SPSS and its Application?

I would like to learn more about SPSS and Its application especially in regards to data analysis. Please suggest me how I can learn more about it. Thank you so much.

11 August 2024 9,101 4 View

Handling Missing Data and Building a Predictive Model with Incomplete Information ?

I am developing a predictive model for a water supply network that involves 20 influencing points. However, I only have historical data for 10 out of these 20 points. I would like to know how to...

10 August 2024 4,005 2 View

Has anyone applied Python in the field of textile engineering for data analysis, automation, or smart textiles?

I'm currently exploring the application of Python in textile engineering, specifically in areas like data analysis, process automation, and the development of smart textiles. I'm interested in...

10 August 2024 7,429 2 View

Is it possible to use the Fused Deposition Modeling (FDM) to additively manufacture interconnected porous structure generation of >100-200 micrometer?

Usually, additive manufacturing techniques like SEBM, SLS, and SLM are used for interconnected porous lattice structure generation with sizes of >100–200 micrometers. Can the Fused Deposition...

09 August 2024 7,892 0 View

How to define an anisotropic material with asymmetric elastic compliance/stiffness matrix in ANSYS APDL?

I need to model an anisotropic material in which the Poisson's ratio ν_12 ≠ ν_21 and so on. Therefore, the elastic compliance matrix wouldn't be a symmetric one. In ANSYS APDL, for TB,ANEL...

09 August 2024 5,048 2 View

GC-MS retention index prediticon?

Hello experts, Does anyone know any free software about retention index prediction ?

08 August 2024 7,403 2 View

How can I apply boundary conditions in an orthotropic steel deck numerical model using ABAQUS software?

I am trying to simulate vehicular loading on an orthotopic steel deck bridge section in ABAQUS software. The red arrow mark in the attached figure indicates the direction in which the vehicle will...

08 August 2024 719 0 View

How to normalize and take the significance of the MTT OD values with 3 replicates for the same cell-line?

Hi, I have a question about normalizing the MTT OD values for doing the statistical analysis. So, if we have 3 different plates and we call them 3 different replicates, so, first we would...

07 August 2024 8,106 4 View

Can you suggest reliable sources defining "3D mesh" and "3D city models"?

Dear fellow researchers, I am currently working on a paper where I need to provide a reliable reference that defines and distinguishes between 3D mesh models and 3D city models. Although I am...

06 August 2024 9,986 2 View

Firoz Ahmad

http://data.princeton.edu/wws509/notes/c4a.pdf

Ivo Sousa-Ferreira

I recommend you read the article "Regression Models for Count Data in R", through the following website https://cran.r-project.org/web/packages/pscl/vignettes/countreg.pdf . Exploring the MASS package from R will be a good way to find the answers that you need.