25 June 2018 4 9K Report

Maybe an educated mind can tell me what is usually measured if one wants to check for sleep deprivation or analyse a human's circadian rhythm?

More Alexander Pekarsky's questions See All
Why are reaction forces so high when I add vibration to cutting model?

Hi I am trying to model a cutting problem with a blade and comparing the results with and without ultrasonic vibration. From experimental results in our group, the use of ultrasound can...

13 June 2024 7,461 4 View

Best Tools for Wrist PPG Signal Analysis: Your Recommendations?

I'm conducting research on photoplethysmography (PPG) signals obtained from smartwatches worn on the wrist. The main goal is to analyze the PPG waveform and extract key fiducial points and...

13 June 2024 3,286 0 View

Why diagonal terms in Abaqus stiffness matrix are infinite?

I am running some simulations in Abaqus to extract the stiffness matrix of a FE model with geometric nonlinearity. I want to provide to Abaqus a set of nodal displacements (all the dofs in the...

28 May 2024 4,797 2 View

Is it possible to combine a time-series of tree-ring widths and and a time-series of diameter at breast height measurements into one TS?

Hello together! I have some time-series for tree-rings from dating from 1850-2016 and diameter at breast height (DBH) from 1996-2022 for the same plot, however the sampled trees for tree-rings...

16 May 2024 5,295 2 View

Is priori knowledge only instincts? Why?

I think so because The Random Slate Theorem

03 May 2024 3,082 7 View

How to fix driver conflicts of an ancient Skyscan 1072 micro CT with DT3157 video grabber ?

I am currently trying to get a Skyscan 1072 micro CT to work again. After the mainboard on the original PC died, we tried to set the machine up on a new computer. We managed to control the source,...

28 April 2024 381 0 View

Statistics: Is it worth using a t-test on pre and post survey data with 12 or less responses?

Is it worth using a paired t-test on pre and post survey data with 12 or less responses? Or should one rely more on the mean and standard deviation of the two data sets to evaluate the survey...

27 April 2024 8,703 8 View

What about religion, God, multi verse, etc.?

1)Religion(or at least spirituality) calms my mind, particularly, the built in belief of only one reality. God created the only reality. The afterlife is another dimension. We have free will but,...

25 April 2024 10,055 0 View

Handling BrainVision matlab files with ECG data in EEGLAB?

I have 217 preprocessed BrainVision matlab files (.mat) with ECG data in them. I've been having trouble creating a study for these. I know BioSig works for ECG data, but it doesn't seem to work...

21 April 2024 1,028 2 View

EEGLAB - how to import multiple .mat files from different folders all at once?

I have 25 folders for 25 participants, all with .mat files inside that are preprocessed. Most of them have the same amount of .mat files - a couple participants didn't finish the study, so they...

17 April 2024 1,897 3 View

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What do I do with dried urine samples?

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Designing Inclusive City. What's your opinion regarding my group's campaign below?

Hello! I have a campaign assignment related to inclusive cities. Would you mind to take a look and give your opinion regarding my group's campaign? What kind of public facilities do you think are...

07 July 2024 368 0 View

How your consciousness can have an after-life?

For evolution to act on the conscious process it must be expressed as a behavioral output (Dawkins 1976). So, thinking about an idea without writing it down or saying it will not do. So far, an...

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How do I avoid sleep while studying?

I want to study without feeling sleepy or tired or bored. How do I study for 3 hours without feeling sleepy while I am studying?

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How is artificial intelligence being utilized to enhance the diagnosis and treatment of sleep apnea?

AI has the potential to improve the management of sleep apnea by personalizing treatment, enhancing diagnostic accuracy, and advancing our understanding of the condition.

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How do the institutions of Family, Marriage and Kinship contribute towards the Socialization of young minds?

Institutions of Family, Marriage and Kinship contribute towards the Socialization

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With the volume of research avilable on the net, it has become difficult to do review of related lterature, How a resercher should go about it?

Actually all the good journals needed to be subsciribed, a common reaesrcher finds it hard to get access to these journals. In this situation they go for open resources whose volume is so big and...

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How does sleep affects life- span in humans?

How does rest promotes,modulates or inhibits the longevity of humans?

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What is the most accurate artificial urine recipe used in vitro for microbiological purposes?

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