How do I materialize cyclical phenomena?

More Tarik Lamkinsi's questions See All

Technical issue in model interpretability !?

How would you address the issue of model interpretability in deep learning, especially when dealing with complex neural network architectures, to ensure transparency and trust in the...

23 January 2024 9,409 1 View

What are some Von Neumann Architecture's Limitations ?

Von Neumann architecture, conceived by John von Neumann in the mid-20th century, has been the fundamental blueprint for modern computers. It features a unified memory space for data and...

09 January 2024 2,658 0 View

Use SARscape-ENVI and HyP3 interferograms?

Please, is there a way to directly integrate and use interferograms generated by the HyP3 service and downloaded from ASF (Alaska Satellite Facility) in ENVI's SARscape to obtain velocity maps and...

28 August 2023 2,713 1 View

How can I find (procedure) the transition state in a tautomeric reaction?

Dear All, I have a question that has been bothering me for a long time. Well, using Gaussian and Gausview, I tried to find the transition state (TS) of a reaction consisting of two reactants, one...

28 July 2023 4,372 0 View

Technical question in GROMACS software ?

Dear all I need help on how I use the protein and ligand in the GROMACS and the step I need to do to get the RMSD (the curves) and solvent accessible surface (SASA) analyses) ?

23 January 2023 4,359 3 View

Anisotropic linear elastic model?

Knowing that the Mathematical elastic model does not admit no analytical solutions. I would like to know, is there are some specific techniques for validation of the solutions for anisotropic...

06 July 2022 9,856 3 View

Comparison between DFT and FEM for the linear elasticity model??

This concerns the linear elasticity model for an orthotropic material. Assuming that there are two approaches to solve this model. The first one is based on spectral method (Discrete Fourier...

31 May 2022 7,393 0 View

Low RNA yield after RNA isolation of monocytes?

I am trying to isolate RNA from monocytes, but using the Macherey-Nagel Kit (NucleoSpin RNA Plus) I only seem to get concentrations of 10-20 ng/µL RNA in 20 µL elution volume, which is barely...

17 March 2022 5,441 3 View

How I can find the second TS output file ?

Dear all I want to know how I can find the second TS output file (bidentate structure) knowing that I have the first TS output file well optimized by Gaussian 09 (DFT: B3LYB / 6-31G)? i need the...

28 November 2021 10,027 3 View

Which book is the best to learn business research?

The best book to learn business research.

01 November 2021 4,777 6 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

If we are using snowball sampling technique, how do we justify the true representativeness of the sample statistically? is there any statistical test?

Are there any statistical methods to justify your sampling technique using SPSS or AMOS?

05 August 2024 9,153 4 View

How to report results of Generalised Linear Mixed Models in a journal article?

Hi everyone, If you have written or come across any papers where Generalised Linear Mixed Models are used to examine intervention (e.g., in mental health) efficacy, could you please share the...

04 August 2024 4,130 4 View

What is the best sampling strategy?

I am conducting a qualitative study that uses interviews to investigate the perceptions of teachers about a particular leadership practice and I am focusing on 3 schools which have a total number...

01 August 2024 8,457 10 View

Why 3 replicates for most biological assays? Is it enough to examine the data fits normal distribution?

Just bounced on me. Before statistically analysing significant difference, shouldn't we see if data fits normal distribution first? Is 3 replicates enough to testify the hypothesis of normal...

31 July 2024 8,141 13 View

Which statistical test should we use?

N=6 Comparing pre and post test likert scale responses. Participants are mix of practicing & preservice teachers.

30 July 2024 7,233 4 View

Is factor analysis with quantitative variables possible?

Good morning, I would like to conduct a factor analysis for my work at the municipal level on a panel datae with variables such as income per capita, unmployement rate, percentage employed in a...

25 July 2024 5,104 4 View

Is it possible to do transient simulation in HFSS in presence of magnetic biasing?

I have designed magnetic material with different biasing conditions in HFSS. Now I want to give an RF AC signal and do a transient simulation in HFSS. Is it possible to do in HFSS? Please help me...

24 July 2024 9,319 5 View

ANCOVA for between-subject design?

Hi, I will run an experiment where reaction time will be the dependent variable, tested in 2 conditions (with the same participants). I want to control for a confounding variable (individual...

20 July 2024 1,943 1 View

I am working on III-V based tandem solar cells.Can anyone explain that solar cells work under forward or reverse biased conditions?

I want to know that n-doped side of solar cell is connected with positive or negative electrode.

20 July 2024 1,348 2 View

Darren C Greenwood

Is this what you mean?

A M Stolwijk, H Straatman, G A Zielhuis. Studying seasonality by using sine and cosine

functions in regression analysis. Epidemiol Community Health 1999;53:235–238.

C. F. Christiansen, L. Pedersen, H. T. Sørensen, K. J. Rothman. Methods to assess seasonal effects in epidemiological studies of infectious diseases—exemplified by application to the occurrence of meningococcal disease. Clin Microbiol Infect 2012; 18:963–969.

James Leigh

the main methods are spectral analysis *frequency domain) and autoregression, moving average and combined autoregression moving average (time domain) modelling.

Lapo Mughini-Gras

If you are interested in studying seasonality (periodic oscillations) in your data, you can use regression modelling with a parameter per each season, but perhaps it would be more elegant to use sinusoidal functions (harmonic regression).