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It's early October and a new crop of students are making their way through the challenges of their first semester at college or university. Academic deadlines are starting to loom for everyone, and some students are about to write their first midterms. In our research, we've noticed across several samples of undergraduates that problems like depressive symptoms start to get worse on average over the course of the first year of university. A paper we published earlier this year showed this effect specifically for students who experienced relatively higher levels of academic stress.
https://www.ncbi.nlm.nih.gov/pubmed/29470761
In our research we're hoping to get a better idea of what we (universities, parents, and students) can do to ease the transition to university and help students set themselves up for success across their university careers. Social relationships, academic habits, working while studying, substance use and other lifestyle behaviours, and financial stress are all pieces of the puzzle that we're examining in our labs.
We'll be here from 12pm to 2pm Eastern (16-18 UT) and are looking forward to your questions and comments!
I've read so many papers and articles about this, but all they say is 'energy released'. Are they photons? Is it kinetic?
TIL: "Fewer" refers to items you can count individually, "less" refers to uncountable substances, such as sand or water. Never make mistakes like this with Grammarly.
If someone sends me a text whilst my phone is in Airplane Mode, I will receive it once I turn it off. My question is, where do the radio waves go in the meantime? Are they stored somewhere, or are they just bouncing around from tower to tower until they can finally be sent to the recipient?
I apologize if this is a stupid question.
Hi Reddit! We're Jamie Nunez and Dr. Ryan Renslow, scientists at Pacific Northwest National Laboratory. Rainbow colormaps have long been known to make data interpretation difficult and sometimes even impossible for those with colorblindness, yet they are still very popular due to limited alternatives. That's why we developed an open-source Python module that can automatically convert colormaps into forms easily interpreted by those with or without color vision deficiencies. One colormap in particular that we created, called cividis, enables consistent and accurate data interpretation for both people with normal vision and those who are colorblind. Cmaputil can be used by anyone to create their own optimized colormaps and can be accessed here: https://github.com/pnnl/cmaputil
Cividis is currently available in Python (matplotlib & plotly packages), R (viridis & viridisLite packages), COMSOL, and more. Read our PLOS One paper "Optimizing colormaps with consideration for color vision deficiency to enable accurate interpretation of scientific data" here: https://goo.gl/UDPWFd
We'll be on at noon PT (3 p.m. ET, 19 UT). Ask us anything!
I never understood the concept, so I’m not sure if this is a stupid question or not.
Update: Right now I’m busy with lectures, but I’ll read the comments afterward.
Update: wow, didn’t expect this many people to comment. Thank you everyone for answering my question!
If the whole world were to experience some drastic increase in temperature that eliminated winter and lasted a thousand years, would seasonal plants and animals, if the world set itself right again, be able to survive a winter? And also, how did plants and animals react with the end of interglacial periods?
More precisely, say I wanted to simulate whacking a smooth, round pebble with a hammer so that a crack appears. Do our current models of rocks fracturing precisely predict the exact geometric shape of these cracks that appear?
What are good references for this?
I understand (or at least, I think I do to some degree) that if someone loses an arm, for example, cutting-edge prosthetics can utilize nerves and existing neural pathways to control the prosthetics. Let's say instead, however, that someone is born with an arm that stops short of the elbow due to a birth defect/genetic condition. At no point have they had an elbow, or forearm, hand... If he are she is born this way I presume that there is no neural pathways/nerves to dock onto. I am sure that technology will continue to advance so I guess I am not asking if it likely will ever be possible but rather if it is possible with existing tech and approaches.
The inspiration for this question is the video that has made more than a few circulations around the internet: a video where a little boy (maybe a few years old) with arms that stopped just short of the elbow who was interacting with his newborn sibling. He utilizes his arms and mouth to pick up his sibling's pacifier and put it in her mouth. A very heart warming video. Many of the responses commented how jealous they were that he would grow up to have awesome android arms. But one comment asked whether it would be possible to have these and cited concerns that there might not be neural pathways to use them.
Any thoughts?
EDIT: Thanks so much for the response everybody! This is my very first post to reddit after years of lurking... First, let me say that I was totally overselling my confidence when it comes to how much I understood about this subject at a base level. To clarify the question, I believe what I was picturing in my question was what is referred to as a myoelectric prosthetic. That seems to be the system of prosthesis that is most commonly featured in videos and articles. I will briefly read up on the basics of myoelectric systems before trying to read any more responses. While I am definitely interested in the use of neurons with prosthetics, the question is probably more appropriately:
Can someone born without a limb as opposed to losing a limb later in life use myoelectric prosthetics? Why or Why not?
This is the MSDS, I’m writing about the hazards of purification of Magnesium sulfate synthesised for an A level PAG. Thanks in advance for any help.
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I guess you could explain how do we know the composition of a planet too. Thanks.
I was looking at it online and saw it said somewhere that it goes away in a week or so, so does that mean it's not always a permanent condition?
I know that the Voyager 1 travels at about 63'000 km/h but how was it able to even get to that speed?
I feel silly asking this question but I've always wondered!
Many illuminant standards such as CRI use "daylight" as a reference, with a higher score seeming to indicate a higher similarity to the sun's spectral output.
However, aside from the sun's color changing due to its position in the sky (as light is scattered by our atmosphere), I realize that there are solar flares, sun spots, and other phenomena that might influence it's spectral output from time to time.
Is anyone measuring this? Is the "daylight" standard an average of many spectral measurements over time? I get that our eyes evolved in response to the sunlight available to us, and thus our perceptions of color, so I was wondering how that is involved in engineering high-CRI light sources.
I'm also not referring to the general aging of a main sequence star, and it's gradual cooling off over millennia.
Thanks!
Bonus questions:
Can you do this in a way without producing other harmful side effects, such as eating away the ozone?
Is it possible for this to be monetarily profitable?
Also when they launch some spaceship out of earth orbit how they calculate the trajectory avoiding all this satellites? Thanks in advance.
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