The procedure compute?

02 March 2021 5,204 3 View

One-sided testing of MLM in R?

Dear colleagues, Does anyone know how to conduct a one-sided testing of regression weights (MLM) in R? The actual model is fm1rs

23 January 2021 3,970 3 View

[Measurement invariance] - Do you test it on the full SEM model, on each construct separately, or both?

Hi everyone, I would like to know whether both cultural groups interpreted my questionnaire in a similar way. To do so, I conducted a measurement invariance analysis on the whole model of latent...

14 January 2021 1,845 3 View

Is it possible to do a closed loop control of a sine wave?

An analogue voltage sine wave signal is send from a PLC to a Piezo actuator. This actuator converts the voltage to force. A load cell checks what the applied force is and sends a mA-signal...

27 December 2020 7,037 3 View

[SEM] Why RStudio and AMOS report different p-values (but same estimates)?

Hi everyone, I have conducted a SEM analysis in AMOS then replicated it in RStudio. While I obtained identical estimates and model fit statistics, the p-values differ between software programs...

25 December 2020 3,669 4 View

What should my boundary conditions be in abaqus and how do I apply a sine load?

I want to model a T bone specimen that is subjected to a sine load. The specimen is clamped in as showed on the figure. I was wondering what I should chose as boundary conditions and how I can...

08 November 2020 9,766 4 View

Does anyone know instruments to measure "mental health literacy" in teachers?

Hi there, I am looking for questionnaires measuring mental health literacy in teachers and educators. does anyone know any studies in this area?

16 September 2020 1,682 4 View

Is there any possibility to get the estimated values (listed for every participant) of a specific latent variable in R or Mplus?

Is there any possibility to get the estimated values (listed for every participant) of a specific latent variable in R or Mplus?

17 June 2020 3,819 3 View

Literature for multilevel MCMC models?

Hey there, I am looking for literature or tutorial videos, which are concerned with the question of how multilevel markov chain monte carlo models are conducted in R or Mplus. Can someone help...

20 April 2020 7,801 1 View

How to generate a ROC-Curve for multilevel regression models?

Dear colleagues, Does anyone know, how to build a ROC-Curve and a AUC-Value concerning multilevel logistic regression models using R or Mplus. I would be very grateful for any articles,...

26 February 2020 8,930 3 View

What is recommended for solid domain in ANSYS FLUENT?

Should I mesh the solid domain ? or should I use wall thickness? or Shell conduction? for Heat Transfer between two fluids of a Heat Exchanger. what is recommended?

01 March 2021 9,785 3 View

How can i resolve the "final solutuin is not converged" error in Comsol for my heat transfer simulation??

I have been trying to simulate heat transfer problem in Comsol 5.5 for long time but it always throw an error stating: "Failed to find a solution. Maximum number of Newton iterations...

28 February 2021 8,626 3 View

PUC19 as a transfer plasmid for lentiviral delivery?

Hello, Is it possible to use pUC19 as a transfer vector to be packed in using the second generation viral particles packaging system( pMD2.G; psPAX2 plasmids)? As far as I understand it there is...

28 February 2021 4,868 2 View

What is Flat Lens Antenna?

28 February 2021 5,433 3 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 View

Is IMPACT FACTOR justified in case of Taxonomy?

There is huge pressure of getting good impact factor on scholars now a days. On the other hand Taxonomy is a very dry subject and the concerned papers can only get citation in same group of organism.

26 February 2021 5,851 1 View

Uncertianiny in using dry or wet basis in mixing a sediment with fuel oil?

Hello I'm currently working on a topic related to studying the anaerobic biodegradation of TPH in marine sediments. In this work, sediment should be mixed with fuel oil to a concentration of 20 g...

24 February 2021 9,839 3 View

Standard curve shifting over time. How do I stabilise the ELISA?

24 February 2021 1,365 3 View

How to properly calculate the fluid solid heat transfer between polypropylene matrix and glass fiber in a porous medium?

I'm building a cfx model of thermoplastic pultrusion process on ansys and i have a doubt on how is the proper way to set this parameter in a porous medium

24 February 2021 1,915 1 View

Advice on growing lactobacillus species in the lab?

Hello everyone, For part of my PhD project, I'm hoping to grow some lactobacillus species in the lab so that I can create standard curves for a qPCR quantification of a faecal sample. However, I...

24 February 2021 3,157 6 View