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The Visible Universe, Then and Now

The Visible Universe, Then and Now
Before the telescope was invented in 1608, our picture of the universe consisted of six planets, our moon, the sun and any stars we could see in the Milky Way galaxy. But as our light-gathering capabilities have grown, so too have the boundaries of the visible universe. Our interactive map shows how the known universe has grown from 1950 to 2011. In the late 1700s, William Herschel, an English astronomer using a telescope with an 18.7-inch aperture, made the first systematic surveys of the skies, revealing more than 2,000 distant galaxies, nebulae and other objects invisible to the naked eye. Since then, increasingly powerful optical and radio telescopes have greatly expanded our store of knowledge.

Presse - Article - Les journalistes français sur Twitter vus comme un graphe En suivant le paradigme méthodologique des Digital Methods, développé notamment par Richard Rogers à l’université d’Amsterdam (2009), nous pouvons envisager un groupe social qui s’active sur l’internet comme un graphe. Dans le cas qui nous intéresse ici, les nœuds du graphe sont les comptes des journalistes français sur Twitter et les connections entre eux sont constitués par des actions de communication comme les retweets et les mentions. Les premiers consistent à rediffuser tel quel un message d’un autre utilisateur. Les secondes consistent à inclure le nom d’un compte dans un message diffusé. Elles visent soit à s’adresser à cet utilisateur, soit à parler de lui. [6]. Entre le 15 février et le 15 avril 2011 nous avons procédé à une cartographie de la Twittoshère journalistique française. [7]. Carte 1 : vue d’ensemble de la Twittosphère journalistique française. Carte 2 : réseaux d’affinités à l’intérieur de la Twittosphère journalistique.

An Annual Report on One Man's Life Nick Bilton/The New York TimesNicholas Felton and his 2008 annual report. At the end of 2005, Nicholas Felton decided to publish a report that would chronicle his life over the previous year. He looked through his music archives to see how many songs he had listened to. He checked his airline ticket stubs to see how many miles he had flown. He aggregated the number of books read and photos taken. The following year, Mr. The tradition continues today. “I started collecting this data in 2005, and I hope to continue the collection process for at least a decade,” Mr. Although this data collection started with a simple curiosity, it also helped Mr. Each year, Mr. “I wanted to understand the bleeding edge of reporting and quantifying myself,” Mr. The works of Mr. But they also signal the kind of data collection that is becoming easier for all of us to do. It didn’t take long before strangers started asking how to create their own reports to quantify and collect information on themselves. Mr.

actuvisu Blog Data Platform Not only open-source, but built in the open. HDP demonstrates our commitment to growing Hadoop and it’s sub-projects with the community and completely in the open. HDP is assembled entirely of projects built through the Apache Software Foundation. How is this different from open-source, and why is it so important? Proprietary Hadoop extensions can be made open-source simply by publishing to github. But compatability issues will creep in, and as the extensions diverge from the trunk, so too does reliance on the extension’s vendor. Community driven development is different.

Welcome to Apache™ Hadoop™! Latest As I mentioned in my previous post, our collaboration with the Sabeti Lab is aimed at creating new visual exploration tools to help researchers, doctors, and clinicians discover patterns and associations in large health and epidemiological datasets. These tools will be the first step in a hypothesis-generation process, combining intuition from expert users with visualization techniques and automated algorithms, allowing users to quickly test hypothesis that are “suggested” by the data itself. Researchers and doctors have a deep familiarity with their data and often can tell immediately when a new pattern is potentially interesting or simply the result of noise. Visualization techniques will help articulate their knowledge to a wider audience. This time around I will describe a quantitative measure of statistical independence called mutual information, which is used to rank associations in the data. -log 1/1000 = log 1000 = 6.9 -log 1/1000000 = log 1000000 = 13.81 -log 1/2 = log 2 = 0.69

Infographic Of The Day: Bloomberg And Frog Turn Raw Data Into Branding | Co. Design Bloomberg is a sprawling, multi billion-dollar enterprise, which creates a distinct problem if you’re trying to explain what the company actually does. They do lots of things, ranging from law research to sports research for team managers to, of course, stock-market data crunching. "Many people have a single association with Bloomberg, as a wire service or a market-data provider," says Jen Walsh, Bloomberg’s head of digital marketing. "We wanted our website to shine a light on other aspects of the business." Walsh sounds like she’s describing a typical corporate homepage, but she tapped frog to create something altogether different: A vast, infinitely scrolling wall of real-time data. The idea is that Bloomberg, in all of its businesses, provides data and information. [Click to visit the site] For all that complexity, the site is actually dead simple to navigate--in a way, it’s a mile wide but an inch deep, allowing visitors to get to what they need with maximum efficiency.

Map « Open Government Data This map is a starting point of mapping information around Open Government Data, initiatives, catalogues, competitions and events. This map is work in progress and not complete or comprehensive. The original source is from our friends at the semantic web company: Here is the original KML file Open Government Data on a Map Mapping Open Government Data Part of the activities of the Open government Data Working Group is to collaboratively collect information about Open Government Data. Initiatives & ProjectsEventsCompetitionsCatalogues We also aim to collect other useful information surrounding Open Government Data, like Use cases & success storiesMost popular datasetsGuidelinesBest practicePolicy recommendations Un état des lieux de l’Open Data David Eaves, conseiller auprès de plusieurs institutions pour l'ouverture des données, a profité de son discours inaugural à l'Open Data Camp 2011 de Varsovie pour dresser un bilan, et évoquer des pistes pour l'avenir. Où en est l’Open Data ? Au cours de mon récent discours d’inauguration à l’Open Data Camp (qui se tenait cette année à Varsovie), j’ai tenté de poursuivre l’intervention que j’avais faite lors de la conférence de l’an passé. Voici l’état des lieux que j’en dresse. Le franchissement du gouffre 1. Une des choses remarquables de l’année 2011 est la véritable explosion des portails Open Data à travers le monde. 2. Ces portails sont le résultat d’un mouvement d’ensemble plus vaste. De plus en plus de personnalités politiques, en particulier, sont curieux de comprendre l’Open Data. [...] 3. En définitive ce qui est également passionnant, c’est le nombre croissant d’expériences dans la sphère Open Data. A l’heure actuelle : un point d’inflexion Le défi majeur : la prochaine étape

How many pupils from your school go to Oxbridge? | News Four schools and one sixth-form college sent more pupils to Oxford and Cambridge between them over three years than 2,000 schools and colleges across the UK, according to a new study that analyses university admissions by individual schools. Westminster, Eton, St Pauls, St Pauls Girls School and Hills Road sixth form college, a state school, produced 946 Oxbridge entrants from 2007-09. In the same period, 2,000 schools and colleges sent 927 pupils to Oxbridge. The difference in these schools' success rates is driven mainly by gaps in achievement at A-level, but some schools do better at gaining entry to university than others with similar exam results. At a comprehensive and a private school in Cornwall, with near identical results, one sent 17% to selective universities and the other 66%. There are striking differences even between schools of the same type. Data summary Get this data with Google list view - allows you to sort the data Download the data More open data World government data

The Open Government Playbook / FrontPage MyData : renverser la relation consommateur, concrètement Par Daniel Kaplan le 20/09/11 | 14 commentaires | 5,961 lectures | Impression En 2010, dans l’ouvrage Informatique, Libertés, Identités, nous posions la question : “Que pourrais-je accomplir, moi, si je disposais, sous une forme réellement exploitable, des informations sur mes trajets et mes communications des années passées ? Pas seulement pour contrôler ce que d’autres en font, mais pour les utiliser à mes propres fins ?” Début 2011, en présentant les résultats de l’expédition de la Fing sur la Confiance numérique, nous allions plus loin : “A terme, la règle doit être simple : si vous savez quelque chose sur moi, je dois posséder la même information et pouvoir l’exploiter.” Le 13 avril 2011, le gouvernement britannique a transformé ce qui n’était encore qu’une perspective hétérodoxe, fragilement appuyée sur un projet de recherche américain et une petite communauté d’innovateurs, en un programme d’ampleur nationale : MyData. “Consumer Empowerment” : nous l’avions rêvé, ils le font