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rudrasonline · 3 months

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Big Data Courses Online

Join Rudras Online's best and certified Big Data Courses Online that give individual knowledge and skills to handle and analyze large volumes of data that are too complex for traditional data processing methods. Our courses include video lectures, interactive learning materials, coding exercises, and real-world projects.

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opens-up-4-nobody · 9 months

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The way that the sun hits leaves and clouds. I feel like I could watch the colors change forever. If I could slow down for that long.

#i keep forgetting a have a deck now. i can go outside and sit there #im doing that now. sitting in the corner of a deck full of empty chairs. staring up at a big pine tree where the sun is striking it gold #at the top. i like how thr light hits the needles. if the sky was black it would look like its on fire #theres a tree outside my bedroom window too. in the morning. after the sunrises it catches thr light and refelcts the most perfect shade #of green. the kind of green that flutters translucent like youre looking up from the bottom of a pool. the light the light its all about #the sun. everything everything is about the sun. when i start my project I'll be focused on understanding how organisms catch the light bc #its so incredible and complicated it would make my chest swell to bursting if there wasnt an empty bleeding wound in my gut. a #metaphorical wound of course. i dunno. its just difficult bc right now my mood is inflated by hormones. not even that much i think I'm #just at what shoulf be a normal level of happiness so i can be slow for a minute. but just a minute bc i kno it won't last long #sorry i cant shut the fuck up when im like this but i dunno i just feel like i havr to document these ephemeral moments before they're gone #its just difficult when you kno the world is so full of beautiful things but 95% of the time your eyes are too clouded to see it #everyone tells me i work too much but i feel like im just staring off into space being miserable 60% of the time. ive just done so much #damage over the past few years im coming into a new lab as damaged goods. ive got an albatross around my neck in thr form of data i #collected so self destructively that the idea of having anything to do with its publication makes me hate myself. everytime someone tells #me good job on collecting so so so much data it feels like they're congratulating me for breaking something within myself. like i slit my #wrists and bled out on a lab bench and theyre saying good job and theyre excited for me and i have to grin and bear it and pretend im #excited too. but im not bc ive burned everything inside me to ash. so when im elevated enough to be distracted by the clouds and trees it #feels like healing. like seeing angels. beautiful ephemeral beams of light. i wish i could slow down enough to watch them. but now thr sun #is hitting the horizon and the sky is going gradually dark and i should go inside. bc i have many things to do in the morning. so that's #what ill do. and ill try to get more thsn 6hrs of sleep but its hard when your body is vibrating over with energy #but at least i dont feel tired in the morning. something in my head must be on fire #unrelated #hm i should maybe add a tw to this #tw self injury #but its the kind thst makes u good at ur Job. its the kind ppl reward. so they don't understand when u say its destroying ur life #but im trying to get better. i say as i gear up for an insane semester lol but i do mean it

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isthereintruthnobeauty1968 · 3 months

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i liked the little data and spock exchange in unification and it made sense what w their opposite directions wrt desire to associate with 'humanity'. that said i think worf is a more direct parallel to spock in that respect

#p #tng #identity is at play for data of course! but culture/nation arent and theyre A Big Fucking Deal for the other two #they share the experience of being surrounded by humans and prob the only individual of their species their colleagues had met #And of having tenuous/difficult/painful relationships to their place and emphasizing their ~foreignness to bait their colleagues #into reifying/validating that identity through. well through xenophobia #harder to get a three minute conversation out of that then out of data's frank questions though lol #spock #worf #data

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fisherpiers · 2 years

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okay but you can’t tell me once hunter finds out you can have little pictures in your typing he wouldn’t put a bunch of emojis on everything

#lunter #goldenlight #huntceda #💜💛#anyway. luz and hunter are close enough they rarely do greetings anymore #like that couple that kept data on all the words they texted over the course of their relationship. and at one #and the data showed that in the beginning their most used word was ‘hey’ but later on it stopped being on the data all together #big headcanon explanation small meme #oh and #there was a sewing emoji but it didn’t look good on this dark mode screenshot #so he just gets the little heart of gold

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jcmarchi · 6 days

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MIT researchers discover the universe’s oldest stars in our own galactic backyard

New Post has been published on https://thedigitalinsider.com/mit-researchers-discover-the-universes-oldest-stars-in-our-own-galactic-backyard/

MIT researchers discover the universe’s oldest stars in our own galactic backyard

MIT researchers, including several undergraduate students, have discovered three of the oldest stars in the universe, and they happen to live in our own galactic neighborhood.

The team spotted the stars in the Milky Way’s “halo” — the cloud of stars that envelopes the entire main galactic disk. Based on the team’s analysis, the three stars formed between 12 and 13 billion years ago, the time when the very first galaxies were taking shape.

The researchers have coined the stars “SASS,” for Small Accreted Stellar System stars, as they believe each star once belonged to its own small, primitive galaxy that was later absorbed by the larger but still growing Milky Way. Today, the three stars are all that are left of their respective galaxies. They circle the outskirts of the Milky Way, where the team suspects there may be more such ancient stellar survivors.

“These oldest stars should definitely be there, given what we know of galaxy formation,” says MIT professor of physics Anna Frebel. “They are part of our cosmic family tree. And we now have a new way to find them.”

As they uncover similar SASS stars, the researchers hope to use them as analogs of ultrafaint dwarf galaxies, which are thought to be some of the universe’s surviving first galaxies. Such galaxies are still intact today but are too distant and faint for astronomers to study in depth. As SASS stars may have once belonged to similarly primitive dwarf galaxies but are in the Milky Way and as such much closer, they could be an accessible key to understanding the evolution of ultrafaint dwarf galaxies.

“Now we can look for more analogs in the Milky Way, that are much brighter, and study their chemical evolution without having to chase these extremely faint stars,” Frebel says.

She and her colleagues have published their findings today in the Monthly Notices of the Royal Astronomical Society (MNRAS). The study’s co-authors are Mohammad Mardini, at Zarqa University, in Jordan; Hillary Andales ’23; and current MIT undergraduates Ananda Santos and Casey Fienberg.

Stellar frontier

The team’s discoveries grew out of a classroom concept. During the 2022 fall semester, Frebel launched a new course, 8.S30 (Observational Stellar Archaeology), in which students learned techniques for analyzing ancient stars and then applied those tools to stars that had never been studied before, to determine their origins.

“While most of our classes are taught from the ground up, this class immediately put us at the frontier of research in astrophysics,” Andales says.

The students worked from star data collected by Frebel over the years from the 6.5-meter Magellan-Clay telescope at the Las Campanas Observatory. She keeps hard copies of the data in a large binder in her office, which the students combed through to look for stars of interest.

In particular, they were searching ancient stars that formed soon after the Big Bang, which occurred 13.8 billion years ago. At this time, the universe was made mostly of hydrogen and helium and very low abundances of other chemical elements, such as strontium and barium. So, the students looked through Frebel’s binder for stars with spectra, or measurements of starlight, that indicated low abundances of strontium and barium.

Their search narrowed in on three stars that were originally observed by the Magellan telescope between 2013 and 2014. Astronomers never followed up on these particular stars to interpret their spectra and deduce their origins. They were, then, perfect candidates for the students in Frebel’s class.

The students learned how to characterize a star in order to prepare for the analysis of the spectra for each of the three stars. They were able to determine the chemical composition of each one with various stellar models. The intensity of a particular feature in the stellar spectrum, corresponding to a specific wavelength of light, corresponds to a particular abundance of a specific element.

After finalizing their analysis, the students were able to confidently conclude that the three stars did hold very low abundances of strontium, barium, and other elements such as iron, compared to their reference star — our own sun. In fact, one star contained less than 1/10,000 the amount of iron to helium compared to the sun today.

“It took a lot of hours staring at a computer, and a lot of debugging, frantically texting and emailing each other to figure this out,” Santos recalls. “It was a big learning curve, and a special experience.”

“On the run”

The stars’ low chemical abundance did hint that they originally formed 12 to 13 billion years ago. In fact, their low chemical signatures were similar to what astronomers had previously measured for some ancient, ultrafaint dwarf galaxies. Did the team’s stars originate in similar galaxies? And how did they come to be in the Milky Way?

On a hunch, the scientists checked out the stars’ orbital patterns and how they move across the sky. The three stars are in different locations throughout the Milky Way’s halo and are estimated to be about 30,000 light years from Earth. (For reference, the disk of the Milky Way spans 100,000 light years across.)

As they retraced each star’s motion about the galactic center using observations from the Gaia astrometric satellite, the team noticed a curious thing: Relative to most of the stars in the main disk, which move like cars on a racetrack, all three stars seemed to be going the wrong way. In astronomy, this is known as “retrograde motion” and is a tipoff that an object was once “accreted,” or drawn in from elsewhere.

“The only way you can have stars going the wrong way from the rest of the gang is if you threw them in the wrong way,” Frebel says.

The fact that these three stars were orbiting in completely different ways from the rest of the galactic disk and even the halo, combined with the fact that they held low chemical abundances, made a strong case that the stars were indeed ancient and once belonged to older, smaller dwarf galaxies that fell into the Milky Way at random angles and continued their stubborn trajectories billions of years later.

Frebel, curious as to whether retrograde motion was a feature of other ancient stars in the halo that astronomers previously analyzed, looked through the scientific literature and found 65 other stars, also with low strontium and barium abundances, that appeared to also be going against the galactic flow.

“Interestingly they’re all quite fast — hundreds of kilometers per second, going the wrong way,” Frebel says. “They’re on the run! We don’t know why that’s the case, but it was the piece to the puzzle that we needed, and that I didn’t quite anticipate when we started.”

The team is eager to search out other ancient SASS stars, and they now have a relatively simple recipe to do so: First, look for stars with low chemical abundances, and then track their orbital patterns for signs of retrograde motion. Of the more than 400 billion stars in the Milky Way, they anticipate that the method will turn up a small but significant number of the universe’s oldest stars.

Frebel plans to relaunch the class this fall, and looks back at that first course, and the three students who took their results through to publication, with admiration and gratitude.

“It’s been awesome to work with three women undergrads. That’s a first for me,” she says. “It’s really an example of the MIT way. We do. And whoever says, ‘I want to participate,’ they can do that, and good things happen.”

This research was supported, in part, by the National Science Foundation.

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berryblu-soda · 3 months

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Seedling is such an interesting little story that i love, but i´d be lying if it wasnt almost completely sprouted (hehe) from the visual of those character duos that are a small child + big scary looking creature who acts as their guard, top tier trope frfr

(also huge shoutout to @ashrayus for hearing me out and adding onto the rambles so long ago, bestie the robot story wasnt working, we got plants now 🌱)

#but also said big scary creature is her brother having an identity crisis and being chased by the horrors :D #the story is 50% strangers to (step) siblings that trust each other with their life #and 50% truths of the world conspiracy with a witch hunt on plant people + aliens doing their thing (of course)#bruhh bc what if there were aliens replacing people at a young age and using them to collect data on the overall population #and “harvesting” them when said purpose was fulfilled #thing is; when the harvesting happens its supposed to be like a switch is flipped; and the seedling just up and leaves to be collected #*but* an infinite amount of things can make this process fail; which happened with the mc; who now clings to his family like a lifeline #while also knowing the general population´s view on seedlings is abyssmal #<- even if the family has no porblem w it; government or a bad neighbour catches you? you´re *gone*#anyways; fun times for lil Vera hshshahsha #seedling #oc talk #shut up sheo #edit: hey ash remember Riven? ik hes your oc can i work with thet concept perhaps?#his color scheme and character role work soooo well!!!!!#planning on making him be one of the few who escaped the harvest but could never quite shake the switch flip

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badolmen · 9 months

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*leaves a comment on every single chapter of a fic as I read it* *author replies to every single comment with increasing giddiness and excitement*

This is good. I’m getting a good grade in fic reader. This is both something that is normal to want and possible to achieve.

#ra speaks #personal #fanfiction #fanfic #ao3 #archive of our own #I’m not going to lie: then replying incentivizes me to keep commenting #and like I get it Big Fics make it unrealistic for an author to reply to every comment #but boy that email gives me the same dopamine rush as the emails abt ppl leaving comments on MY fics #who gives a shit of ‘oh but I don’t want to inflate my comment count - ‘ shut up and let me kiss you. with tongue.#or bake you your favorite kind of muffin if it’s best we keep this professional/platonic #in other news: o7 survived my first day as a TA. I have class in a few hours for my data science course and it probably won’t kill me.#probably.

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scholarnest · 6 months

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catboyfurina · 7 months

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my early childhood education class is really driving home the developmental in developmental disability.... like i knew thats what adhd is classified as but they just keep dropping skill after skill that are standard for Small Children that i do not have D:

#attention span. is of course the one that is most noted but even like #theres that one adhd sway thing and i was like huh i do that guess theres another data point. not a big deal though it doesnt cause any iss #es #right. well. apparently one of the skills youre supposed to get is spatial awareness. and it specifically mentioned going around things #which technically ! i do but also sometimes. quite often even #i do not manage fully around. meanwhile its expected for Small Children to get able to do that. huh what HUH #beeep #like again not getting fully around isnt a Big deal i just get caught on doors and then uncatch myself its not Disabling like other aspects #and if i hadnt seen the youtube (the youtube referencing a study not just a youtube)#i wouldve kept on assuming its just a itty bitty side effect of weird eye #but like......... man. in nearly every area i was like wow i suck at this one wow i suck at this one w #its a good thing im an adult algebra is much easier than counting to one hundred . u can write it down and when u lose your place u just #look at the paper #although i havent gotten algebra in a while i miss it............ but i could go do algebra. if i had time. and thats what is nice #anywayyyyyyy ahaha

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dataly-data-science · 7 months

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#data science course #data science training #data science certification #data science online course #data science institute in delhi #data scientist #data analytics #big data #machine learning #business intelligence #data science in canada

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seeker-of-truth · 11 months

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#idk man #I published a chapter of my long fic which was the first explicitly queer chapter and like #I find it disheartening that bookmarks went down #like I was very clear that that ship was going to be included in the tags but idk man #I know there’s been so much written about the misogyny in fandom #but like to see readership go down after including a wlw ship #just like doesn’t feel good #of course maybe the reader noped out for another reason #I can’t know as much as I would like too #but my data analysis little ass wants answers #I also don’t really know what I’m getting at here #just like venting I guess #I know this isn’t a big deal #and I am incredibly grateful for everyone who’s read my work #like to the ends of the earth and back #just #musing on stuff

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rudrasonline · 3 months

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