5,867 Matching Annotations
  1. Last 7 days
    1. des études 00:24:20 expérimentales confirmées par des nombreux observations en classe révèle ce qu'on appelle les faits avec les travaux fondamentaux 00:24:31 ils deviennent clairs les connaissances des élèves les aides à renforcer ses connaissances la critique naïf l'évaluation qui ne servirait à rien car ce n'est pas avec 00:24:44 des tests d'examen qui les élèves apprennent cette critique naïve tombe par terre
  2. Mar 2024
    1. 3:50 "options are the right but not obligation to buy or sell"<br /> who on earth is so stupid to take part in such a gamble?<br /> this is just another intelligence test, exploiting the fact that most people are idiots.

  3. Feb 2024
    1. les psychologues 00:46:08 sont capables de nous dire si l'enfant a une agitation qui est liée à un problème d'humeur ou un problème d'anxiété c'est le fameux test de patte noire je sais pas si vous connaissez ce test là on dit un enfant regarde c'est l'histoire d'un petit cochon qui a une tâche noire et je 00:46:21 vais te montrer des histoires et tu vas me raconter ce qui se passe donc c'est ce qu'on appelle un test projectif il va projeter sur une situation sa vie psychique je vous cache 00:46:32 pas qu'on a la version mouton aussi les situations que vous imaginez vous demandez à Brandon qu'est-ce que tu vois là qu'est-ce que vous imaginez qu'un vrai enfant en TDAH donc il bouge non pas 00:46:48 parce qu'il y a des primé parce qu'il est mal élevé et qui bouge parce qu'il peut pas faire autrement qu'est-ce qu'il peut voir là qu'est-ce qu'il va dire enfin les parents de patte noire ont compris qu'il pouvait rentrer de l'école tout seul enfin maintenant il va avoir ses copains 00:47:02 il va s'amuser donc c'est un enfant qui va avoir une note positive si il bouge pour des raisons de troubles de l'humeur parce qu'il est déprimé là forcément sur cette image là il va avoir des choses tristes mais il est tout seul il a abandonné il est rejeté etc donc vous 00:47:15 voyez qu'on a un outil qui est merveilleux là c'est pareil c'est le petit et Brian là il dit patte noire enfin il s'est caché dans sa cachette et là il appelle ses copains il va tout le monde dort il va pouvoir faire la fête 00:47:26 toute l'année alors celui qui bougeait parce que il était déprimé il va dire il m'a dit ça ce gamin il m'a dit il est foutu il vient de vous dire il est super content parce que il va faire la fête toute la nuit lui il est foutu 00:47:43 parce qu'il est dans une il est dans des sables mouvants et s'il bouge il va mourir et si il bouge pas il va mourir donc vous voyez qu'on a on a plein de stratégies pour pour savoir comment 00:47:56 comment il va
    2. celui qui bougeait parce que il était déprimé il va dire il m'a dit ça ce gamin il m'a dit il est foutu il vient de vous dire il est super content parce que il va faire la fête toute la nuit lui il est foutu 00:47:43 parce qu'il est dans une il est dans des sables mouvants et s'il bouge il va mourir et si il bouge pas il va mourir
    3. ne les envoyer pas tout de suite logopédiste parce que s'ils font des 00:32:21 erreurs ce que je vous conseille de faire il regarde Brandon là il y a quatre erreurs est-ce que tu les vois est-ce que tu peux me les souligner et s'il peut les souligner a priori c'est que s'il avait fait attention il les 00:32:33 aurait vu alors que l'enfant qui a une dyslexie d'orthographique et bien il dira ben non je vois pas où elles sont
    4. le gestes graphique et le nombre d'erreurs s'aggravent avec la tâche chaque fois que vous avez un enfant au début ça marche bien et même pas d'erreur sur les deux premières lignes et puis plus la tâche continue plus les 00:32:58 erreurs apparaissent là vous devez vous poser la question d'un trouble d'attention et c'est intéressant parce que c'est pas peut-être pas Lego pénis qu'il faut voir d'emblée
  4. Jan 2024
  5. Dec 2023
    1. akes API calls. There is no specific process here, however in general if you're building a web app, it is best to add the token as a session variable to identify that browser session with a particular person, if you're building a native desktop or mobile app, then you should use the datastore avai

      test

  6. Nov 2023
    1. // NOTE: The element exists on the original form but is hidden and gets rerendered, which leads to intermittent detached DOM issues cy.contains('Next').click().wait(4000)
    1. // oftentimes once we have a proper e2e test around logging in
      // there is NO more reason to actually use our UI to log in users
      // doing so wastes a huge amount of time, as our entire page has to load
      // all associated resources have to load, we have to wait to fill the
      // form and for the form submission and redirection process
      
    1. have been bred to bear tubers with flesh and skin of various colors. Sweet potato is only distantly related to the common potato (Solanum tuberosum), both bein

      sample anno

    1. blah. this surveillance system is one big personality test.<br /> the problem is, they do not want a balance of all personality types or "natural order",<br /> but they do a one-sided selection by personality type.<br /> aka socialdarwinism, socialism, survival of the social, social credit score, civilization, high culture, progress, "made order", human laws, human rights, humanism, ...

    1. Participants were asked to listen to 40 short English speech samples, half of which contained grammatical errors against articles (e.g., a/an, the).

      Only grammatical articles of English (the, a/an) are used for measurement in this study. While valid, it's a rather small (though important) subset of grammar. (note using Hypothesis)

      2nd para added (testing 3-min auto sync)

    1. How to set up and validate locally Access content editor in wikis or in issues behind a feature flag :content_editor_on_issues. Copy some text from Google docs or any rich text document Press Cmd/Ctrl + Shift + V to paste raw text.
    1. overpopulation is just another intelligence test, and most people are failing, again.<br /> the problem is pacifism, the solution is permanent tribal warfare and legal serial murder.<br /> but first there is depopulation, killing 95% of today's population. fucking useless eaters... byye! no one will miss you.

      Delete The Garbage. World Cure. RD9 Virus. The Brothers Grimsby 2016<br /> https://www.youtube.com/watch?v=HGG0Nq3BwqQ

    1. 「名副其实」,能够说明链接地址的内容。

      写的不错!继续努力!

    1. echnology and the world of work change fast — with us, you’re faster. Achieve goals and stay competitive with on-demand learning, hands-on practice, and more

      test drove vehicle

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    Annotators

    URL

  7. Oct 2023
    1. Thank you. Steve, for raising the alarm on this catastrophe! One minor comment. It should be QC'ed, not QA'ed. Quality control is done first. Quality Assurance (QA) comes after QC. QA is basically checking the calculations and the test results in the batch records. I worked in QC and QA for big pharma for decades. I tried to warn people in early 2021 that there's no way the quality control testing could be done at warp speed. Nobody listened to me despite my decades of experience in big pharma!

      "warp speed" sounds fancy, plus "its an emergency, we have no time"...

      it really was just an intelligence test, a global-scale exploit of trust in authorities. (and lets be honest, stupid people deserve to die.)

      problem is, they (elites, military, industry) seem to go for actual forced vaccinations, which would be an escalation from psychological warfare to actual warfare against the 95% "useless eaters".

      personally, i would prefer if they would globally legalize serial murder and assault rifles, then "we the people" would solve the overpopulation. (because: serial murder is the only alternative to mass murder.) but they are scared that we would also kill the wrong people (their servants because they are evil or stupid). (anyone crying about depopulation should suggest better solutions. denying overpopulation is just another failed intelligence test.)

    1. 1,900 years ago in Greek.From the viewpoint of language, even the most competent English translation cannot render all the nuances of the original Greek. * *

    1. You can reply to any annotation by using the reply action on every card.

      Another one!

    1. Youmust apprehend the unity with definiteness. There is only oneway to know that you have succeeded. You must be able totell yourself or anybody else what the unity is, and in a fewwords. ( If it requires too many words, you have not seen theunity but a multiplicity. ) Do not be satisfied with "feeling theunity" that you cannot express. The reader who says, "I knowwhat it is, but I just can't say it," probably does not even foolhimself.

      Adler/Van Doren use the statement of unity of a work as an example of testing one's understanding of a work and its contents.

      (Again, did this exist in the 1940 edition?)

      Who do McDaniel and Donnelly 1996 cite in their work as predecessors of their idea as certainly it existed?


      Examples in the literature of this same idea/method after this: - https://hypothes.is/a/TclhyMfqEeyTkQdZl43ZyA (Feynman Technique in ZK; relationship to Ahrens) - explain it to me like I'm a 5th grader - https://hypothes.is/a/BKhfvuIyEeyZj_v7eMiYcg ("People talk" in Algebra Project) - https://hypothes.is/a/m0KQSDlZEeyYFLulG9z0vw (Intellectual Life version) - https://hypothes.is/a/OyAAflm5Ee6GStMjUMCKbw (earlier version of statement in this same work) - https://hypothes.is/a/iV5MwjivEe23zyebtBagfw (Ahrens' version of elaboration citing McDaniel and Donnelly 1996, this uses both restatement and application to a situation as a means of testing understanding) - https://hypothes.is/a/B3sDhlm5Ee6wF0fRYO0OQg (Adler's version for testing understanding from his video) - https://hypothes.is/a/rh1M5vdEEeut4pOOF7OYNA (Manfred Kuenh and Luhmann's reformulating writing)

  8. Sep 2023
    1. Sweden Poised to Miss the Long-Term Climate Target It Pioneered
      • for: Indyweb test
      • title:Sweden Poised to Miss the Long-Term Climate Target It Pioneered
      • comment
        • for an indyweb test on mapping thought vectors in idea space
        • various perspectives on this thread
    1. Beauty technologies are often judged by their results. Like other tech gadgets, however, their meani
    1. Nobody, however, who surveys the conventional working apparatus of courses of study, textbooks, recitations, examinations, and marks can have much doubt that in practice the schools are making the mastery of the curriculum an end in itself.

      A statement of "teaching to the test" in 1939!

    1. En esta análisis te describo las claves del sistema PARA, cómo crearlo y estructurarlo correctamente, y después cómo utilizarlo para ser más productivos y más creativos.

      prueba nota

    1. I'd suggest that you play around a little bit with a vanilla app. Create a brand new app without any additional files, just what rails new generates. See how bin/rails runner Models raises an error because there is no models directory in autoload_paths. Now, put config.autoload_paths += %W(#{config.root}/app) in config/application.rb and observe how bin/rails runner Models just returns a prompt. With the confidence of having that running, then transalate to your app.
  9. Aug 2023
    1. block a text with the cursor

      This is how an annotated text looks like. You can use markdown to comment as well. Even an equation such as $$e = m \cdot c^2$$ will render nicely.

    1. Hypothesis is a centralized web service

      pros: must sign up and confirm email

      cons: must sign up and confirm email

    1. Inside the Apache Kafka Broker

      consumer properties => same as producer, time and batch size.

    2. Kafka Broker

      producer key properties => linger time -> linger.ms batch size -> batch.size

      these determine the throughput and latency of kafkaproducers

  10. Jul 2023
    1. Containerization solves these proble

      integration test with containerization looks like exactly what I need

    1. An interesting website that offers a VVIQ test for people's capacity to visualize things in "the mind's eye". May be helpful for people who have [[aphantasia]].

  11. Jun 2023
    1. In 1978, she became one of the first women ever to write and direct a comedy feature–Rabbit Test, a cult classic about a man (Billy Crystal) becoming pregnant.

      For reference, Octavia Bulter's Blood Child was first published in 1984 (and as part of a book in 1985).

    1. Test [1/1] test "expect addOne adds one to 41"... Lines like this indicate which test, out of the total number of tests, is being run. In this case, [1/1] indicates that the first test, out of a total of one test, is being run. Note that, when the test runner program's standard error is output to the terminal, these lines are cleared when a test succeeds.

      If you cannot see the separate testing result. Refer to this link: https://github.com/ziglang/zig/issues/10203

  12. drive.google.com drive.google.com
    1. Second
      1. although I am signed into both hypothes.is and the chrome extension with the josthuizenjazz user, when I create an annotation the joosthuizenuser still appears.
      2. does this identify the hypothe.is user under which the annotation will be filed?
  13. May 2023
  14. Apr 2023
  15. Mar 2023
    1. Pour créer un groupe, ouvrez le volet d’annotation puis déroulez le menu des groupes. Sélectionnez alors le groupe de votre choix ou cliquez sur « New private group » pour en créer un nouveau.

      test

    1. Some people argue that the Welch’s t-test should be the default choice for comparing the means of two independent groups since it performs better than the Student’s t-test when sample sizes and variances are unequal between groups, and it gives identical results when sample sizes are variances are equal. In practice, when you are comparing the means of two groups it’s unlikely that the standard deviations for each group will be identical. This makes it a good idea to just always use Welch’s t-test, so that you don’t have to make any assumptions about equal variances.
    1. Non-parametric tests don’t make as many assumptions about the data, and are useful when one or more of the common statistical assumptions are violated. However, the inferences they make aren’t as strong as with parametric tests.
    1. Nonparametric statistics are often preferred to parametric tests when the sample size is small and the data are skewed or contain outliers.
    1. Noteworthy for its longstanding influence is thebook “Nonparametric statistics for the behavioralsciences” by Siege

      Highly cited book from 1956!

      Siegel (1956) pointed out that traditional parametric tests should not be used with extremely small samples, because these tests have several strong assumptions underlying their use. The t-test requires that observations are drawn from a normally distributed population and the two-sample t-test requires that the two populations have the same variance. According to Siegel (1956), these assumptions cannot be tested when the sample size is small. Siegel (1957) stated that “if samples as small as 6 are used, there is no alternative to using a nonparametric statistical test unless the nature of the population distribution is known exactly” (p. 18).

    1. Please re-run Maven with -e and -X like the output suggests, and paste what it gives you. Also, are you building your own code or an existing library?

      testing

    1. A Uniform Resource Identifier (URI) is a compact sequence ofcharacters that identifies an abstract or physical resource. Thisspecification defines the generic URI syntax and a process forresolving URI references that might be in relative form, along withguidelines and security considerations for the use of URIs on theInternet. The URI syntax defines a grammar that is a superset of allvalid URIs, allowing an implementation to parse the common componentsof a URI reference without knowing the scheme-specific requirementsof every possible identifier. This specification does not define agenerative grammar for URIs; that task is performed by the individualspecifications of each URI scheme.

      Annotating a PDF... in the browser! And it's linkable?? Incredible.

  16. Feb 2023
    1. Finding good quality news is hard and takes time. A lot of it is behind paywalls and/or on places/sites that are littered with advertising. Feedreaders get around some of those issues by only showing me news from sources I have chosen, without advertising, in one app where all articles look similar and according to my settings.

      Just trying to do an annotation, my first one actually, to see how it all works. I wonder what the "public" or "only me" actually means. If I make it "public", will anyone with the plugin/bookmarklet see that here is an annotation?

    1. 竞彩预测-阿宽有道8连红!欧冠豪取16连红 下APP看方案领红包

      title

    1. Arbitrary information

      where does this go?

    2. maximum

      What happens to this annotation if you change the word I annotated?

    3. General

      What happens to this annotation if you edit something else on the document?

    1. https://www.youtube.com/watch?v=pZgMpjjgCRA

      Combining sketchnotes with Cornell Notes in a fairly straightforward manner.

      He mentions anecdotally that teachers who have used custom icons for their subjects see students drawing some of them on their exam papers as mental associative tags. This is the same sort of use that drolleries had in medieval manuscripts.

  17. Jan 2023
  18. www.investopedia.com www.investopedia.com
    1. T-Test: What It Is With Multiple Formulas and When To Use Them

      https://www.investopedia.com/terms/t/t-test.asp A t-test is an inferential statistic used to determine if there is a significant difference between the means of two groups and how they are related. T-tests are used when the data sets follow a normal distribution and have unknown variances, like the data set recorded from flipping a coin 100 times.

    1. there's a new type of test that my colleagues and in my lab we've developed it's called the dna methylation test 00:02:20 it's also known as the horovath test named after my friend stephen horvath

      !- New health / aging metrics test : DNA Methylation / Horvath Test

    1. Educators are now administering the Turing test in reverse: What are questions that only humans can answer well? What kinds of thinking does writing make possible for us? 
  19. Dec 2022
    1. Create a note by selecting some text and clicking the

      ok

    1. Zinc is losing electrons in the reaction and is thus oxidized to the zinc cation, while sulfur is gaining electrons and is thus reduced to the sulfide anion.

      While my instinct is that reduction = less electrons, in reality it's the charge that's being reduced, which means more electrons

  20. Nov 2022
    1. Thanks for the tip, I've added that to my Firefox on Android. However, although hypothesis is always on in Firefox I have the problem that it does not login no matter how many times I log in to the hypothesis website..
  21. Oct 2022
    1. rgattung des Dialogs zum Durchbruch und schuf damit eine Alternative zur Lehrschrift und zur Rhetorik als bekannten Darstellungs- und Überzeugungsmitteln. Dabei bezog er dichterische und mythische Motive sowie handwerkliche Zusammenhäng

      Test

    1. Personally, I'm not a huge fan of that — since highlights are text quotes

      注释笔记 1. 一 2. 二 Bold

  22. Sep 2022
    1. Innovativebrandstrategistandholisticvisionarywithmorethan10yearsofsuccessinbringingcreativevisionsto

      test

  23. Aug 2022
    1. Pritchard, E., Matthews, P. C., Stoesser, N., Eyre, D. W., Gethings, O., Vihta, K.-D., Jones, J., House, T., VanSteenHouse, H., Bell, I., Bell, J. I., Newton, J. N., Farrar, J., Diamond, I., Rourke, E., Studley, R., Crook, D., Peto, T. E. A., Walker, A. S., & Pouwels, K. B. (2021). Impact of vaccination on new SARS-CoV-2 infections in the United Kingdom. Nature Medicine, 1–9. https://doi.org/10.1038/s41591-021-01410-w

    1. ReconfigBehSci. (2021, November 26). Parts of Germany seem to have potentially introduced requirements that cannot practically be met as testing capacity is proving insufficient—A dangerous moment for rule compliance Nadelöhr Corona-Tests: “Es ist Wahnsinn” via @sz https://t.co/meLS79RTCw [Tweet]. @SciBeh. https://twitter.com/SciBeh/status/1464287412289511432

    1. In fact,Descartes argued that the only sure indication that another body possesses ahuman mind, that it is not a mere automaton, is its ability to use language inthe normal way;

      Turing test precursor

      When did Turing pose his test? Year?

    Tags

    Annotators

    1. Estimation of the Biphasic Property in a Female’s Menstrual Cycle fromCutaneous Temperature Measured During Sleep

      Hypothesisのハイライト機能のテストです

  24. Jul 2022
    1. In traditional print media, it's common practice among readers to underline text, highlight sections or write comments in the margins. Such annotations allow readers to express their opinions.

      test

    1. 这个是我最顾虑的点,假如某天数据丢失或者被hack怎么办?

      test

  25. Jun 2022
    1. 7 Software Test Principles

      It is important that you achieve optimal test results with software testing without deviating from the test goal. But how do you determine whether you are following the right test strategy? For this you have to follow a number of basic principles.

  26. May 2022
    1. Thomas Edison is one of history's most famous and prolific inventors. His inventions have revolutionized the modern world - from the electricity we use, the communication system, and the entertainment we've enjoyed through his contributions to sound recording and motion-picture cameras. The most famous invention from Edison was his innovation of the lightbulb design and now there is an opportunity to own a piece of history and take it to the metaverse.

      hello

    1. Common Pitfalls to Avoid When Choosing Your App

      What are the common pitfalls when choosing a note taking application or platform?

      Own your data

      Prefer note taking systems that don't rely on a company's long term existence. While Evernote or OneNote have been around for a while, there's nothing to say they'll be around forever or even your entire lifetime. That shiny new startup note taking company may not gain traction in the market and exist in two years. If your notes are trapped inside a company's infrastructure and aren't exportable to another location, you're simply dead in the water. Make sure you have a method to be able to export and own the raw data of your notes.

      Test driving many

      and not choosing or sticking with one (or even a few)<br /> Don't get stunned into inaction by the number of choices.

      Shiny object syndrome

      is the situation where people focus all attention on something that is new, current or trendy, yet drop this as soon as something new takes its place.<br /> There will always be new and perhaps interesting note taking applications. Some may look fun and you'll be tempted to try them out and fragment your notes. Don't waste your time unless the benefits are manifestly clear and the pathway to exporting your notes is simple and easy. Otherwise you'll spend all your time importing/exporting and managing your notes and not taking and using them. Paper and pencil has been around for centuries and they work, so at a minimum do this. True innovation in this space is exceedingly rare, and even small affordances like the ability to have [[wikilinks]] and/or bi-directional links may save a few seconds here and there, in the long run these can still be done manually and having a system far exceeds the value of having the best system.

      (Relate this to the same effect in the blogosphere of people switching CMSes and software and never actually writing content on their website. The purpose of the tool is using it and not collecting all the tools as a distraction for not using them. Remember which problem you're attempting to solve.)

      Future needs and whataboutisms

      Surely there will be future innovations in the note taking space or you may find some niche need that your current system doesn't solve. Given the maturity of the space even in a pen and paper world, this will be rare. Don't worry inordinately about the future, imitate what has worked for large numbers of people in the past and move forward from there.

      Others? Probably...

    1. The minute we saw his frantic, hand-lettered presentation of the Field Notes credo — “I’m not writing it down to remember it later, I’m writing it down to remember it now” — we knew just what to do.

      https://fieldnotesbrand.com/apparel/remember-it-now-tee

      Field Notes, a manufacturer of notebooks, uses the credo "I'm not writing it down to remember it later, I'm writing it down to remember it now." This is an fun restatement of the idea behind the power of the Feynman technique.

      Link to Ahrens' version of this idea.

  27. Apr 2022
    1. The Zettelkasten System is a Superset of the Feynman Technique

      Sönke Ahrens outlines this broad idea of how one practices the Feynman technique for understanding using one's notes in How to Take Smart Notes, but he doesn't use the name Feynman technique. Certainly the idea of writing things down to test one's understanding predated Feynman, does anyone know of historical examples of this pattern/technique prior to Feynman? Does it have other names in the literature?

    1. In this case, for a test to be statistically significant, p-value must be lower than 0.05.

      statistical significance should be less than 5%

      tf your confidence that the results are not due to chance is 95%

    1. We are 99% confident that the true average “attitude” difference betweenliving environments is between 1.32 and 7.88. At a significance level of 0.01we can say that living in a minority environment is associated with higherscore

      99% confident that the true average (result) is between these two numbers;

      at 1% (0.01) significance, we can scientifically assume there is a causal relationship

    1. 0xf673f15fa9ba7f9a3016d6383353f70cb634c7d4fde77bee21c90969978c4a6e

      A test note

  28. Mar 2022
    1. A test case is a series of actions that are performed to determine a specific function or functionality of your application. Test scenarios are rather vague and include a wide range of variables. However, testing is all about being very specific. That is why we need elaborate test cases.

      Test cases, examples and Best Practices A test case is a series of actions that are performed to determine a specific function or functionality of your application. Test scenarios are rather vague and include a wide range of variables. However, testing is all about being very specific. That is why we need elaborate test cases.

    1. Dr Ellie Murray, ScD. (2022, January 6). School & university administrators, as you grapple with this week’s decisions, spare some time to think about how to delay next January’s start date to Jan 16 2022. Do you need to extend into summer? Change course lengths? Figure it out because this is going to happen again! [Tweet]. @epiellie. https://twitter.com/epiellie/status/1478921243961274370

    1. Logseq 作为笔记软件走的是和 Obsidian 较为不同的路子,虽然也是本地优先、支持插件,但是整体来说和 Roam Research 更为相似,功能丝毫不比 Roam Research 弱,版本更新较为频繁,BUG 修复也较为迅速。logseq 可以和 Obsidian 加载同一个库,需要注意的是一些语法的污染和 logseq 大纲笔记的形式。

      just test

  29. Feb 2022
    1. Die Zutritts- und Zufahrtskontrolle ist Leistung des AN, ihm obliegt die Organisation, Kontrolle und Dokumentation

    Tags

    Annotators

    1. 作为一款将 News Feed 作为首页的 App,Instagram 为什么没有“转发”功能?“转发”不是能够加速信息流动,也给好的照片带来更多曝光吗?但这只是短期效果,长期来看,“转发”又会将 Instagram 社区塑造成什么?

      test

    1. This article is for those who want to keep traveling despite restrictions due to covid. Basically giving tips on how to navigate the multiple governmental restrictions and policies including links to airline or country websites for choosing destinations. Because of this trend in travel advice in covid times, we may see attitudes towards travel shift to travel knowing the risks involved (quarantine, masks requirements, etc.) and hence see tourism rise again. Last minute covid holiday packages. What if the trend for remaining home also stayed the same for next five years and the adventure seekers become the avatars for the folks who want to stay at home.

      The crisis is changing the way how people will enjoy their international holiday, with an extra concern on testing and quarantine expenses and risk taking. That may have an impact on the tourism market, asking the airline companies to provide flexible policies /products and may witness the booming of travel insurance market.

  30. Jan 2022
    1. Dr. Thrasher wrote a book! (2022, January 8). My cousin wanted to get tested. She waited in an auto testing line for 6.5 hours, and stayed in it bc she was traveling to bury her Daddy. How many people give up in such long lines? How many cases upwards of a million are we losing bc Biden et all failed on home tests? Https://t.co/Q7WVy5qD4v [Tweet]. @thrasherxy. https://twitter.com/thrasherxy/status/1479826389142491146

    1. Depuis longtemps, je suis d’avis que la rigueur d’un cours ne se mesure pas à la quantité de connaissances dont l’enseignant fait étalage, mais aux apprentissages que les étudiants font.

      Which can lead to an assessment of pedagogical efficacy. It's funny, to me, that those who complain about "grade inflation" (typically admins) rarely entertain the notion that grades could be higher than usual if the course went well. The situation is quite different in "L&D" (Learning and Development, typically for training and professional development in an organizational context). "Oh, great! We were able to get everyone to reach the standard for this competency! Must mean that we've done something right in our Instructional Design!"

  31. Dec 2021
    1. El púlsar binario PSR J0737 como banco de pruebas de la relatividad general Por Francisco R. Villatoro, el 16 diciembre, 2021. Categoría(s): Astronomía • Ciencia • Física • Noticias • Physics • Relatividad • Science ✎ 3

      l púlsar binario PSR J0737 como banco de pruebas de la relatividad general Por Francisco R. Villatoro, el 16 diciembre, 2021. Categoría(s): Astronomía • Ciencia • Física • Noticias • Physics • Relatividad • Science ✎ 3

      Hulse y Taylor recibieron el Premio Nobel de Física en 1993 por su estudio del púlsar binario PSR B1913+16 (el primero que se descubrió en 1974), que observó de forma indirecta la emisión de ondas gravitacionales. Se publica en Physical Review X un análisis similar del púlsar binario PSR J0737−3039A/B, descubierto en 2003. El púlsar binario PSR J0737 es un banco de pruebas único para el estudio de la relatividad general ya que está situado a solo dos mil años luz de la Tierra, ambas estrellas de neutrones se observan como púlsares y su inclinación orbital es muy próxima a 90 °, luego se puede observar cómo el espaciotiempo curvo del plano orbital modifica los pulsos emitidos. Las observaciones durante 16 años de la precesión del periastro siguen la fórmula de la emisión gravitacional cuadripolar de Einstein con un error menor del 0.013 % (el resultado obtenido tras 2.5 años de observaciones tenía un error del 0.05 % y se publicó en 2006 en Science). Sin lugar a dudas un púlsar binario que habrá que seguir durante las próximas décadas para mejorar estas estimaciones.

      Además de probar la fórmula cuadripolar de Einstein, se ha probado el retraso debido al efecto de Shapiro (en un espaciotiempo curvo las señales de radio viajan durante más tiempo y las observamos retrasadas). También se han realizado otras pruebas de la relatividad que hasta ahora no se habían podido realizar con otros púlsares binarios. Por ejemplo, se ha medido la deformación relativista de la órbita (debido al acoplamiento relativista entre el espín (rotación de las estrellas de neutrones) y el momento angular de su órbita). En estas pruebas los resultados tienen mucha mayor incertidumbre, pero en todos los casos son compatibles con las predicciones de la relatividad general de Einstein. Esta teoría, a la que muchos físicos quieren matar cuanto antes, además de muy bella es muy robusta y promete reinar en la física durante muchas décadas.

      El artículo es M. Kramer, I. H. Stairs, …, G. Theureau, «Strong-field Gravity Tests with the Double Pulsar,» Physical Review X 11: 04150 (13 Dec 2021), doi: https://doi.org/10.1103/PhysRevX.11.041050, arXiv:2112.06795[astro-ph.HE] (13 Dec 2021); más información divulgativa en Lijing Shao, «General Relativity Withstands Double Pulsar’s Scrutiny,» Physics 14: 173 (13 Dec 2021) [web].

      Una manera de destacar la excepcionalidad del púlsar binario PSR J0737 es compararlo con el famoso PSR B1913, que ha sido estudiado durante 35 años. Esta figura muestra la precesión del periastro de la órbita; la diferencia en la densidad de puntos entre 0 y −20 es notable. Así se explica que el nuevo resultado para PSR J0737 tras 16 años tenga un error menor del 0.013 %, cuando para PSR B1913 solo se alcanzó el 0.2 %; por cierto, para las fusiones de agujeros negros observadas por LIGO-Virgo el error típico ronda el 20 %. No le he dicho, pero supongo que sabrás que el periastro de una órbita elíptica es el punto donde la distancia entre ambos cuerpos es mínima; se llama perihelio cuando uno de los cuerpos es el Sol y perigeo cuando es la Tierra. El fenómeno que mide esta figura es análogo a la precesión del perihelio de la órbita de Mercurio, que Einstein usó como guía hacia la formulación correcta de su teoría de la gravitación.

      ASTROFÍSICACIENCIAEXPERIMENTOFÍSICANOTICIASPÚLSARTEORÍA DE LA RELATIVIDAD GENERAL

      3 Comentarios Mario dice: 17 diciembre, 2021 a las 5:10 pm Francis Hay una frase que no entiendo, favor revisar: «…,luego sus señales se observa cómo el espaciotiempo curvo del plano orbital modificada la señal que observamos». Atte Mario

      RESPONDER Francisco R. Villatoro dice: 17 diciembre, 2021 a las 9:15 pm Gracias, Mario.

      RESPONDER Mario dice: 19 diciembre, 2021 a las 10:07 pm Francis, entiendo que por el efecto shapiro las señales de radio se ven retrasadas; pero para notar tal retraso tiene que haber una referencia. Cuál es esa referencia?

      RESPONDER Deja un comentario

    1. For the evaluation of thermal stability, each separator was positioned between slide glasses and subjected to certain tensile shear stress. Then, the temperature was raised to 150℃ and 180℃ at 5℃·m−1, and both separators were kept for 12 h at each temperature in order to compare their contraction percentages

      how to test heat shrinkage

  32. Nov 2021
    1. e Netherlands and analyzingtest scores on externally standardized tests, the studyreports a learning loss of 3.16 percentiles on a com-posite index of math, reading, and spelling, an effectthat varies in size by socioeconomic background andschool composition

      the Netherlands and analyzingtest scores on externally standardized tests, the studyreports a learning loss of 3.16 percentiles on a com-posite index of math, reading, and spelling, an effectthat varies in size by socioeconomic background andschool composition

    1. evernote之类的拥有自己的很强大的clipper剪藏工具,我觉得logseq作为笔记学习工具也应该有一个,在logseq的API开放后大佬们可以考虑开发一个.

      一个简单的测试

    1. verb (used with object), set, set·ting.to put (something or someone) in a particular place: to set a vase on a table.

      这是我第一个故事