How to learn variance component from scratch?

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Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View

Interested to stain mice tissue with WGA 488 conjugate, anybody has a protocol to recommend?

Interested to stain mice brain tissue with WGA 488 conjugate, appreciate if anyone willing to offer me some guidance or suggestions! Thank you!

28 February 2021 3,951 2 View

Where can the fault diagnosis data set of lithium battery be found?

Most of the data sets on the network only contain good information about the voltage and internal resistance of lithium batteries. The data of faulty battery is missing. Who can help me, I will be...

21 February 2021 8,659 1 View

How do I collect online measures in a same-different task?

The same-different task requires to subjects to indicate whether a pair of stimuli seen or heard are the same (say AA or BB) or different (say AB or BA). Researchers often collect offline measures...

20 February 2021 9,226 2 View

When is it optimal to choose an OFAT (One factor at a time) design over DOE (design of experiment)?

As a current undergraduate student majoring in Microbiology who is still learning DOE (Design of experiment) on my own, I have heard and read that an OFAT design is considered the most inefficient...

29 January 2021 8,256 3 View

Can Dess-Martin Periodinane be used in DMF or THF?

After seeking for references, most of the solvents for Dess-Martin is DCM, but my compound has a poor solubility in DCM. Because my compound is acid-sensitive, I prefer not to use IBX to oxidize...

17 January 2021 3,586 3 View

How many times should I inject the drug before I take samples for RNA-Sequencing?

I'm going to perform RNA-sequencing of the zebrafish brain with three different treatments, which are naive fish, alcohol withdrawal fish injected with Saline, alcohol withdrawal fish injected...

08 December 2020 4,643 2 View

How to analyze a time series of temperature mean whether different or not?

I have 6 culture tank, 2 treatment with 3 replicate. I test temperature of every tank everyday, for 14 days. Now I want to compare whether this 2 treatment temperature have significant different...

06 December 2020 834 7 View

How do I transform the "Transcripts" into the "Gene symbol"?

I downloaded the expression matrix data "GSE143416_Brain_data_TPM.txt.gz" of GSE143416 from Gene expression omnibus ( https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi). However, the first column of...

30 November 2020 1,304 3 View

Protocol to isolate only the tumor spheres in a sphere culture for further analysis?

Is there a reliable protocol to isolate and "purify" only tumorspheres in a sphere culture, that also contains some cell debris, some single cells that have failed to form spheres, and cell clumps...

17 November 2020 8,384 3 View

Binary Logistic Generalized Linear Mixed model in SPSS. Is it doable?

I want to analyses the proportion of swimming sperm of three species of fish in two salinities. To analyse the proportion of swimming sperm in a Generalized Linear Model, I would use a Binary...

03 March 2021 2,297 3 View

Why should we choose deep learning to machine learning? Why is CNN better for image classification? Can I get Typical Answer?

What Characteristics makes CNN work better?

03 March 2021 1,458 4 View

What are some of the research gaps in machine learning and artificial intelligence in africa?

i would to know some of the research gaps in the artificial intelligence field in most african countries.

03 March 2021 6,145 3 View

Anyone plz suggest relevant topic for research in image processing+Deep learning.?

I have selected brain tumor images ...but now found that already lots of research done n this topic.

03 March 2021 5,774 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 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

What analysis to choose with a large neste dataset and clearly skewed or kurtotic distributions?

Hello! I have a dataset of n=3000 nested within 8 countries with approximately 200 or 400 responses in each country. I originally planned to perform multilevel modelling with 4 dependent variables...

02 March 2021 6,865 1 View

Is there a powerful system for the security of the systems distributed on IoT systems?

02 March 2021 3,858 10 View

How to get started building and analyzing a UTAUT model?

Hello all, I need help getting started building and analyzing a UTATU model. I have a survey ready with some questions but I had some confusions on UATAUT and on how to analyze the data. I will...

02 March 2021 9,271 1 View

Can you share me how teacher education is managed in your respective national educational system?

I feel that the practice in teacher education in my country is below the expected performance level due to very poor management system. Hope I will learn something from your experiences.

02 March 2021 1,516 4 View

Muhammad Ali

Have a look at https://www.youtube.com/watch?v=lAZ4tq4Ti98

https://www.flutterbys.com.au/stats/tut/tut9.2a.html

https://towardsdatascience.com/principal-component-analysis-pca-from-scratch-in-python-7f3e2a540c51

Lin Kai-Hsiang

Dear Muhammad Ali

Thanks for your apply.

These resources are helping me a lot.

Abdullah Al-Oshoush

You can look here https://www.coursera.org/lecture/random-models-nested-split-plot-designs/estimating-the-variance-components-uaqOs