@bkim@mastodon.social avatar

bkim

@bkim@mastodon.social

Is this a bio?

This profile is from a federated server and may be incomplete. Browse more on the original instance.

augustocc, to random Portuguese
@augustocc@social.br-linux.org avatar

Acho que faz mais de um ano que eu não plugo um pen drive em algum computador

bkim,
@bkim@mastodon.social avatar

@augustocc pra mim faz menos de um ano, porque eu achei um monte de pen drives guardados e fui ver oq tinha: backup, nada, nada, fotos em 2011 de uma viagem a trabalho da minha mãe, backup, disco de instalação do Ubuntu.

pluralistic, to random
@pluralistic@mamot.fr avatar

The crash of 2008 imparted many lessons to people who were only dimly aware of finance, especially how complexity was a way of disguising fraud and recklessness. That was really the first lesson of 2008: "financial engineering" is mostly a way of obscuring crime behind a screen of technical jargon.

--

If you'd like an essay-formatted version of this thread to read or share, here's a link to it on pluralistic.net, my surveillance-free, ad-free, tracker-free blog:

https://pluralistic.net/2024/05/22/koteswar-jay-gajavelli/#if-you-ever-go-to-houston

1/

bkim,
@bkim@mastodon.social avatar

@pluralistic can we have it at a discount in amazon.com.br as well?

peterdutoit, (edited ) to brazil
@peterdutoit@mastodon.green avatar

"I don't say this lightly - but the floods in , , are looking comparable to what Katrina did to New Orleans in 2005 -- massive evacuations, water & power outages, key infrastructure damaged, parts of city, possible long-term consequences."—Brian Winter

Background heating +1.3ºC

1/

bkim,
@bkim@mastodon.social avatar

@peterdutoit The most frightening part is how large are the affected areas by flooding, not only Porto Alegre.

1/3 of the Rio Grande do Sul state's cities have declared state of emergency, and over 300,000 have left their homes.

fasterthanlime, to random
@fasterthanlime@hachyderm.io avatar

Tomorrow I will celebrate one year of being cigarette-free/vape-free/nicotine-free 🎉

Any ideas how I should celebrate this?

bkim,
@bkim@mastodon.social avatar

@fasterthanlime Kissing someone. And congratulations!! Not an easy feat

ProfKinyon, to random
@ProfKinyon@mathstodon.xyz avatar

Theorem: If N is a positive integer and is not a perfect square, then (\sqrt{N}) is irrational.

Proof: Suppose (\sqrt{N} = a/b) for positive integers (a,b) with no common factor greater than 1. Then (b/a = \sqrt{N}/N), and so (a/b = (bN)/a). Since the first fraction is in lowest terms, the numerator and denominator of the second fraction must be a common integer multiple, say (c), of the numerator and denominator of the first. Hence (a = cb), and therefore, (\sqrt{N} = c), that is, (N) is a perfect square. QED

I learned this proof from a one paragraph insert in the American Mathematical Monthly (vol. 115, June-July 2008, p. 524) written by Geoffrey C. Berresford. I just love it.

bkim,
@bkim@mastodon.social avatar

@ProfKinyon yay, a maths instance on Mastodon! Is there a way to display those equations on the app or the web?

lzg, to random
@lzg@mastodon.social avatar

deleted_by_author

    •
    bkim,
    @bkim@mastodon.social avatar

    @lzg HELL YEAH, LOOK AT THIS!!

    Brazilians combined manioc flour with cheese and create the inimitable PÃO DE QUEIJO, or CHEESE BREAD, a gluten-free bread! It gets even better if you fill it with another creamy cheese called REQUEIJÃO.

    JUST LOOK AT WHAT MY PEOPLE BROUGHT TO THE WORLD!

    https://panelinha.com.br/receita/pao-de-queijo

    cfiesler, to random
    @cfiesler@hci.social avatar

    On a post that has absolutely NOTHING to do with this, two people have been arguing in my comments for three days about whether spreadsheets are databases. The thread is now almost 50 comments.

    bkim,
    @bkim@mastodon.social avatar

    @mike @cfiesler Excel and Google Sheets are terrible to navigate with large text content in cells. Was Lotus 1-2-3 different??

    mcc, to random
    @mcc@mastodon.social avatar

    I don't know who needs to hear this but man ascii contains a complete table of all ASCII-7 values including their hex, decimal and octal equivalents

    bkim,
    @bkim@mastodon.social avatar

    @mcc I needed to hear this. For a while I had this in my reverse search:

    python -c "print('\n'.join(f'{i:02x} {chr(i)}' for i in range(128)))"

    gvwilson, to random
    @gvwilson@mastodon.social avatar

    Looking for a word to use in contrast to "exascale" to mean "the laptop-sized computing that is all 99.9% of researchers need". Thought about "human-scale" but that doesn't have enough zing. Suggestions?

    bkim,
    @bkim@mastodon.social avatar

    @gvwilson I use "small data" to describe datasets under 1M rows (or: fits in Excel)

    rodhilton, to DnD
    @rodhilton@mastodon.social avatar

    Last night my players barricaded doors of the pirate hideout shut and burned it down using their owl familiar's dragon breath. They stood back listening the the screams of panic give way to screams of agony as they burned alive, before the watchtower above collapsed under the flames and crushed them all.

    bkim,
    @bkim@mastodon.social avatar

    @rodhilton wasn't there any treasures that would make them reconsider? Also an intelligence roll to maybe evacuate a burning building? Welp, time for some clean sheets...

    bkim,
    @bkim@mastodon.social avatar

    @rodhilton @jhulten oh, I thought the players were in the building and were also flattened!

    bagder, to random
    @bagder@mastodon.social avatar

    Number of commits per committers in . 1242 commit authors. Both axis are log scaled.

    bkim,
    @bkim@mastodon.social avatar

    @bagder nice example of power-law distribution: 1 committer with 10,000 commits, and 100s of commiters with 1 commit

    plaguepoems, to random
    @plaguepoems@mastodon.social avatar

    So your book
    remains unwritten.

    And your degree
    remains unearned.

    And your debts
    remain unpaid.

    And your job
    remains unsatisfying.

    And your hopes
    remain unfulfilled.

    Think nothing of it
    the year is ending
    and you
    have done enough
    for all that matters
    is that you remain.

    bkim,
    @bkim@mastodon.social avatar

    @plaguepoems this is incredible!! Nothing matters more than that

    lcamtuf, (edited ) to random

    Check out this bad boy I just laid my hands on: a top-notch Friden 130 "desktop" calculator made in 1964. Absolutely massive, over 40 lbs and originally costing as much as a car. CRT vector-drawn digits - no small feat in the days before complex integrated circuits. All four basic arithmetic operations implemented solely with discrete transistors. The device uses an acoustic (magnetostrictive) delay line memory for storage, because transistor flip-flops were expensive to construct.

    The calculator uses reverse Polish notation (long before HP) and displays all four stack registers at once (with no zero blanking).

    More: https://lcamtuf.substack.com/p/a-brief-history-of-counting-stuff

    bkim,
    @bkim@mastodon.social avatar

    @lcamtuf I don't see a 'swap' button, could it compute an arithmetic mean?

    I think about storing [(number of elements) (sum of elements)] in the stack, and repeating the following steps:

    <Enter number>
    +
    Swap
    1 +
    Swap

    In the end, you could just

    /

    To obtain the mean.

    Of course, if data entry was manual, you could probably also tally the numbers outside the machine. Still, with a 'swap' you'd be able to compute the variance by also keeping a running sum of squares...

    Rasp, to random
    @Rasp@raru.re avatar

    I'd put money on there being a higher regret rate for Harry Potter tattoos than gender affirming care

    bkim,
    @bkim@mastodon.social avatar

    @etsnyman @kkarhan @Rasp https://arstechnica.com/health/2023/08/no-regrets-gender-affirming-chest-surgery-in-adults-has-long-term-satisfaction/ -- chest reconstruction surgery satisfaction is second only to urinary incontinence treatment.

    sotneStatue, (edited ) to random
    @sotneStatue@fosstodon.org avatar

    Everyone, I have an idea:

    We should create a global holiday:

    Backup Day. Everyone gets a day off to stay at home and make sure that all important files are backed up. At the end of the day you have a family dinner and share a scary data loss story to scare the kids

    Edit: as some have pointed out, there already is a Backup Day! It is March 31st so I expect no less then a large celebration on @fosstodon next year. Happy Backup day everyone! :omya_aws:

    https://en.m.wikipedia.org/wiki/World_Backup_Day

    bkim,
    @bkim@mastodon.social avatar

    @sotneStatue And people trade presents like physical photo albums and handwritten letters like the old days

    timbray, to random
    @timbray@cosocial.ca avatar

    Seems legit.

    bkim,
    @bkim@mastodon.social avatar

    @timbray one of these things is not like the others.

    Actually, none of these things are like each other. Those are the vertices that delimit the quadrant of human knowledge

    augustocc, to random Portuguese
    @augustocc@social.br-linux.org avatar

    O tempo passou e hoje tanta gente acredita que o "bug do milênio" era um exagero ou farsa, porque ~nada aconteceu.

    Eu era programador nos anos 90 e lembro quanto tempo gastei, ali por 1994/1995, corrigindo ou adaptando sistemas e bases que representavam o ano em só 2 dígitos, pra eles não pirarem quando passasse de 99 pra 00.

    No mundo todo, passamos uma década corrigindo o bug. Foi um sucesso, e não uma farsa.

    Obrigado por ter vindo ao meu ted talk

    bkim,
    @bkim@mastodon.social avatar

    @augustocc E o bug do milênio continua acontecendo!

    A solução em alguns sistemas foi adiar o problema: considerar que números entre 00 e 10 representam 2000 a 2010, e de 11 a 99 representam 1911 a 1999. Nesses casos os sistemas não tinham dados referenciando 1900-1910, então seria seguro.

    "A gente não vai estar usando mais esse sistema em 10 anos", disseram os incautos.

    Resultado: em 1° de Jan de 2010 vimos algumas falhas acontecendo, assim como em 2020, e com certeza veremos em 2030 também.

    bkim,
    @bkim@mastodon.social avatar

    @Emi_ina @augustocc Pensa num sistema (bugado) que manda uma cobrança se um boleto estiver vencido há 30 dias. Pra cada boleto em aberto, o sistema faz a conta

    (dias vencidos) = (data atual) - (data do vencimento)

    e manda o alerta se (dias vencidos) > 30.

    Se em 01/Dez/99 for emitido um boleto pra dali a um mês (01/Jan/00), esse sistema faria a conta e acreditaria que o boleto está vencido há 99 anos e 11 meses!

    O bug aparece então até antes da virada, e CADA boleto novo cria uma cobrança!

    bkim,
    @bkim@mastodon.social avatar

    @Emi_ina @augustocc Nesse caso, as consequências podem ser severas. O sistema de boletos pode criar 100 boletos/segundo no horário de pico, mas o sistema de cobranças suporta até 2 boletos/segundo 🌊

    O sistema de cobranças cai, e agora o sistema de boletos tem que aguardar ele voltar. Nenhum novo boleto é emitido por vários dias, e os clientes buscam outro banco 🙃

    Ainda, alguns milhares de cobranças indevidas acabaram sendo feitas, e agora vários clientes abrem processos no Pequenas Causas 💸

  • All
  • Subscribed
  • Moderated
  • Favorites
  • •
  • JUstTest
  • rosin
  • thenastyranch
  • everett
  • DreamBathrooms
  • ethstaker
  • magazineikmin
  • cubers
  • Youngstown
  • tacticalgear
  • Durango
  • slotface
  • ngwrru68w68
  • kavyap
  • provamag3
  • osvaldo12
  • InstantRegret
  • cisconetworking
  • GTA5RPClips
  • modclub
  • tester
  • mdbf
  • khanakhh
  • normalnudes
  • Leos
  • megavids
  • anitta
  • lostlight
  • All magazines
    •