Negative value of Pesaran's test for cross-sectional independence?

More Soliman Rakha's questions See All

Benedek PN, Sarjeant W. 1981..Nova Hedwigia. 35:313-356.?

Hello, I am looking for a pdf of this paper. Thanks for help! Benedek PN, Sarjeant W. 1981. Dinoflagellate cysts from the Middle and Upper Oligocene of Tonisberg (Niederrheingebiet): a...

16 July 2024 8,683 0 View

A horizontal smear in SDS-PAGE?

I am facing an issue related to horizontal smearing on SDS gel. I have changed all the buffers and acrylamide with fresh ones, but I am still facing the issue. Below, the image is attached, where...

21 March 2024 3,237 3 View

Can we perform a MANCOVA for paired data?

I have data for a cross-over randomized controlled trial. I wonder if I can use MANCOVA to compare my outcomes (they are continuous) while having paired data. If I can't, what would be an...

20 November 2023 9,584 4 View

What are the specific requirements and medium for culturing primary human adrenal cortical cells?

Can someone share their protocol for culture of primary human adrenal cortical cells please. Thank you in advance!

15 October 2023 6,971 0 View

How to run mediation analysis after multiple imputation in R?

I have run a multiple imputation model and after it I used the with() and pool() functions to pool all my results using linear regression to get one estimate. I want to run mediation analysis on...

13 October 2023 9,124 1 View

How to calculate sample size for independent t-test given hedges g?

I need to calculate sample size based on this equation but I am give hedges g instead of cohen D: pwr.t.test(d = , sig.level= , power = , type = c("two.sample")) • d=effect size •...

31 August 2023 572 3 View

Requesting information regarding B-Cell Epitopes immunogenicity Prediction, Can you suggest bioinformatics/immunoinformatics tools?

Hello there, I'm searching for reliable bioinformatics/immunoinformatics tools for predicting the immunogenicity of B-Cell Epitopes. Your expertise is invaluable! Could you kindly recommend any...

17 August 2023 1,725 1 View

How to interpret ROC curve in the context of logistic regression?

Hello, I recently stumbled on a paper in the field of neurosurgery. The paper analyzes imaging parameters that predict injury related to the spinal cord (Posterior Ligamentous Complex Injuries)....

17 May 2023 7,382 1 View

How to interpret non-significant interventions ranking first in P-score ranking in network meta-analysis?

Hello, We are currently conducting a network meta-analysis of RCTs using R (netmeta package). I have relatively small number of studies. The problem is interventions that are non-significant but...

30 April 2023 9,977 1 View

Why is LPS effect on THP-1 cells is not dose dependent?

I am trying to establish a dose-response relationship with different concentrations of LPS on differentiated THP-1 cell-secreted TNFa and IL-1b. However, I am finding that all the concentrations I...

08 March 2023 4,316 1 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

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

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

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

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

Is there an alternative to a multinomial regression which allows the DV to be non mutually exclusive?

I am trying to analyse data from a survey examining what variables affect teachers perceived barriers to incorporating technology into their classroom. I have 5 predictor variables however my DV...

06 August 2024 1,752 3 View

In order to run Multinomial Logistic Regression, is it required that the data be in the long format?

I am using unit level data (IHDS round 2) & Stata 17

06 August 2024 5,725 2 View

Please explain how the plastic input value should be considered from the true stress-strain curve for the bilinear elastoplastic material model ?

I am working on Abaqus/Explicit(Quasistatic ) for the deformation of the auxetic structure model. Please explain how the plastic input value should be considered from the true stress-strain curve...

05 August 2024 454 3 View

What are the shear and normal stiffness values of an LLDPE liner in 3D numerical modeling of a stockpile?

I am seeking experimental or applicable data for the liner (LLDPE) interface in FLAC3D numerical modeling of a large stockpile. Could you please recommend suitable references? The preferred data...

05 August 2024 3,665 0 View