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Dabei stehen aber zahlreiche\nMechanismen im Weg, die dazu führen, dass unsere Wahrnehmung der\nRealität systematische Fehler aufweist - sogenannte kognitive\nVerzerrungen oder Bias. Nicht nur unser generelles Klarkommen im Alltag,\nsondern auch Entscheidungen in der Politik und Erkenntnisgewinn in der\nWissenschaft werden davon in Mitleidenschaft gezogen. 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0 - Atomuhrprojekt für Hackerspaces","subtitle":null,"slug":"eh15_-_17_-_de_-_saal_-_201504041900_-_stratum_0_-_atomuhrprojekt_fur_hackerspaces_-_ktrask_-_shoragan","link":"https://eh15.easterhegg.eu/frab/en/eh15/public/events/17.html","description":"Im ntp-Protokoll bezeichnet Stratum x einen Zeitserver, wobei x angibt, der wievielte Zeitserver in der Zeitsynchrinationsreihe es ist.\nTypischerweise hat man hier die Werte 2 und 3. x=1 bezeichnet dabei den Zeitserver, der direkt an einen Zeitgeber gekoppelt ist. 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Vor nunmehr 10 Jahren wurden neue Modi entwickelt, die mit wenig Leistung große Reichweiten erzielen. Dazu wurde tief in die Trickkiste gegriffen.\n\nWSPR (Weak Signal Propagation Reporter) und WSJT (Weak Signal Communication, by K1JT) wurden an der Princeton University entwickelt. Bei WSPR handelt es sich um ein Bakennetzwerk, das mit Hilfe des Internets die Ausbreitungsmöglichkeiten der eigenen Antennenanlage auf einfache Weise veranschaulicht. Unter WSJT wird eine Gruppe an diversen Betriebsmodi zusammengefasst, wie beispielsweise JT65, JT9 oder FSK441. Durch sekundengenaue, aber sehr langsame Aussendungen und einem eingeschränkten Protokoll können Stationen weit unter dem Rauschen mit dem Computer decodiert werden.\n\nAuf dem 31C3 habe ich zum ersten Mal in diesen Modi gearbeitet und meine Freude daran gefunden. Es ist langsam und gemütlich, aber selbst mit meiner bescheidenen Antennenanlage mitten in der Stadt bekomme ich große Reichweiten. 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In einer Zeit, in der auch immer\nmehr Kulturgüter nur digital verfügbar sind, wird bereits jetzt ein\nenormer Aufwand betrieben, um alte Systeme am Leben zu halten, denn das\nAufheben der CD alleine reicht nicht mehr.\n\nDamit der wichtige digitale Teil unserer Kultur nicht verloren geht,\nhaben wir ein Bereitstellungssystem (\"Emulation-as-a-Service\")\nentwickelt, das alte Software ganz ohne technisches Hintergrundwissen\nauf Knopfdruck im Browser darstellt.\n\nDer Vortrag stellt dieses Forschungsprojekt der Uni Freiburg und\ninsbesondere die dahinterliegende Infrastruktur vor. 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Einige davon sollen durch DNSSEC\nbehoben werden - aber es mangelt noch an der Verbreitung. Dieser\nVortrag gibt eine kurze Einführung in DNSSEC, erklärt, was man\ntun muss, um seine Domain mit DNSSEC zu sichern und damit auch, warum\nviele noch scheitern.\n\nDoch das Signieren der Zone ist erst der Anfang. Wenn DNSSEC erst\neinmal im Einsatz ist, gibt es eine ganze Reihe neuer DNS Resource Records,\ndie gerade dabei sind, sich mehr oder weniger zu etablieren. Was ist DANE\nund was können TLSA/SSHFP/SMIMEA und OPENPGPKEY? Was hat das Potential\nsich durchzusetzen? Nach einer Vorstellung der Verfahren soll es hier in\neinen Workshop/Diskussionsrunde übergehen. Welche Records setzt ihr schon\nein? Oder hat Google recht und das taugt alles nix? 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