19 Matching Annotations
  1. Mar 2018
    1. Piech et al. [22] reported substantial improvements inprediction performance with DKT over BKT on two real-world data sets (Assistments,Khan Academy) a
  2. Feb 2018
    1. What kinds of social mediausers readjunk news? We examine the distribution of the most significant sources of junk news in the three months before PresidentDonaldTrump’sfirstState of the Union Address. Drawing ona list of sources that consistently publish political news and information that isextremist, sensationalist, conspiratorial, masked commentary, fake news and other forms of junk news, we find that the distribution of such content is unevenlyspread across the ideological spectrum. We demonstrate that (1) onTwitter, a network of Trumpsupporters sharesthe widest range of knownjunk newssources and circulatesmore junk news than all the other groups put together;(2)on Facebook,extreme hard right pages—distinct from Republican pages—sharethe widest range of known junk news sourcesand circulate more junk news than all the other audiences put together;(3)on average, the audiences for junk news on Twitter share a wider range of known junk news sources than audiences on Facebook’s public pages
  3. Oct 2017
    1. "Les réseaux sociaux ont donné le droit à la parole à des légions d'imbéciles qui avant ne parlaient qu'au bar et ne causaient aucun tort à la collectivité". Umberto Ecco
    1. L’annonce par le gouvernement espagnol de convoquer des élections régionales le 21 décembre en Catalogne et de donner la parole à tous les Catalans remet enfin le curseur là où il devait être.
  4. Sep 2017
    1. Harvard’s top brass overturned Ms. Jones’s admission after some professors raised concerns that she played down her crime in the application process.

      more than 20 years ago, she is now a different woman

  5. Feb 2016
  6. Nov 2015
    1. Conduct Mixed Methods analyses ......................................................................... 26Defining document variables .................................................................................................... 26Entering variable values ........................................................................................................... 27Transforming code frequencies into variables ........................................................................... 28Using document variables in your analysis ................................................................................ 2
    1. Snapchat, the messaging company, and Dropbox, the online storage business, were recently marked down in value by mutual fund investors. Zenefits, a human resources start-up, has said it missed sales targets and that it is slowing its hiring. On Wednesday, the payments company Square, which was valued at $6 billion by private investors last year, priced its public offering at $2.9 billion. Silicon Valley venture capitalists such as Bill Gurley of Benchmark and Michael Moritz of Sequoia Capital have warned that a unicorn shakeout is coming.
    1. The ICC is constructed to be applied to exchangeable measurements — that is, grouped data in which there is no meaningful way to order the measurements within a group. In assessing conformity among observers, if the same observers rate each element being studied, then systematic differences among observers are likely to exist, which conflicts with the notion of exchangeability.
  7. Oct 2015
    1. the strongest evidence yet to support the most fundamental claims of the theory of quantum mechanics about the existence of an odd world formed by a fabric of subatomic particles, where matter does not take form until it is observed and time runs backward as well as forward.
    1. Le repérage des axes de symétrie d'une figure et la construction de l'image d'une figure par une symétrie axiale peuvent poser problème lorsque l'axe de symétrie n'est pas parallèle aux bords de la feuille ou qu'il a des points communs avec la figureVeiller donc à varier la direction des axes de symétrie

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    1. Se représenter, problématiser et modéliser des situations et résoudre des problèmes en construisant et en mobilisant des notions, des concepts, des démarches et des raisonne-ments propres aux Mathématiques et aux Sciences de la nature dans les champs des phénomènes naturels et tech-niques, du vivant et de l’environnement, ainsi que des nombres et de l’espace.
    1. Mr. Dorsey, who is 38, will remain chief executive and chairman of Square, a mobile payments company that is preparing for an initial public offering of stock later this year. He will not take a salary for his new role at Twitter, according to a company securities filing.
  8. Aug 2015
    1. De Ketele studied general, technical and professional education from 1964 to 1967 and earned degrees in psychology in 1972 and in education in 1973, both from the Université catholique de Louvain. In 1977 he received a doctoral degree with a speciality in observation and evaluation. In 1991 he became an ordinary professor at the Université catholique de Louvain, where he is now professor emeritus. In 1994, he was appointed to the UNESCO chair in education sciences at Cheikh Anta Diop University in Dakar, which he assisted in establishing;[1] he spent 16 years in Senegal.[2] He has also been a visiting professor at Paris West University Nanterre La Défense, at the Faculty of Medicine at Paris 13 University, at Pierre Mendès-France University in Grenoble and at the University of Fribourg.
  9. Jul 2015
    1. Excessive use of computer games among young people in China appears to be taking an alarming turn and may have particular relevance for American parents whose children spend many hours a day focused on electronic screens. The documentary “Web Junkie,” to be shown next Monday on PBS, highlights the tragic effects on teenagers who become hooked on video games, playing for dozens of hours at a time often without breaks to eat, sleep or even use the bathroom. Many come to view the real world as fake.
  10. Jun 2015
    1. Issu d’une recherche portant sur la structure et l’évolution des acquisitions à l’école élémentaire, cet article se focalise sur les liens entre les apprentissages scolaires et les capacités cognitives appréhendées par la mémoire de travail. Reposant sur une approche longitudinale, l’article vise à mettre en évidence la relation qui existe entre la mémoire de travail et les acquisitions scolaires au cours du cycle III. Le lien entre mémoire de travail et origine sociale est également examiné. Les résultats offrent des pistes de réflexion en matière de politique éducative, notamment quant au développement d’activités susceptibles de réduire les écarts sociaux et cognitifs entre les élèves.
  11. Mar 2015
    1. Une récente méta-analyse, portant sur les résultats de 23 études d’entraînement, montre que ces programmes ne donnent que des effets de transfert proche, c’est-à- dire une amélioration des performances sur la tâche-même qui a été entraînée.