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Interoperable Chat in Your Web Browser: JSXC 3.0 released
Open, standards-compliant and interoperable chat sounds like a boon. However, proprietary and closed systems (WhatsApp, Facebook chat, Google Hangouts, โฆ) are often easier to deploy, as they are nicely integrated in existing ecosystems. The freshly-released JSXC 3.0 shows that this is not necessary.
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Solana Blockchain: Proof of History analogies
Here are some attempts to compare Proof of History (PoH), as used by the Solana blockchain, with Proof of Work (PoW). Comparisons to real-world activities, such as dice rolling or outer-space rubber-stamp throwing are also included.
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What is an NFT, behind the scenes?
“NFT” is currently on everyone’s lips again, and not only because of Pro Senectute. But what is actually behind the full-bodied promises of the NFT advocates? For more insights on NFTs and the entire blockchain ecosystem, click here. You can also read this text in German ๐ฉ๐ช. “NFT” stands for “Non-Fungible Token” and is being…
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Netfuture: The future is networked
Bevorzugen Sie Deutsch? Einige Artikel und mehr รผber mich gibt es auch in meiner Muttersprache. Today, any device is networked, not only our personal devices, but anything from the fridge to the power plant. This implies endless possibilities, but also possibilities galore for anything to go wrong. Decades of thorough theoretical and hands-on experience enables…
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Counting like a computer
Computers are very good at counting. But usually only within narrow limits. Here is an insight into where these limits come from and what goes wrong when they are exceeded.
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Kensington PowerPointer for Linux LibreOffice
Navigating the slides works perfectly with the Kensington PowerPointer for LibreOffice under Linux, no questions asked. The extra functions (“laserpointing”, drawing, and screen blanking) are not well supported. Here is how to fix them.
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Upgrade ejabberd to the latest TLS security [UPDATE#2, 2014-06-05]
ejabberd is a very fine XMPP server. However, it has very few options to configure its SSL and TLS security settings away from the very weak OpenSSL defaults. The TLS Interposer makes securing TLS used by ejabberd a breeze.
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Parity Bits
[simple_series title=”CRC Tutorial”] Parity comes in two flavors, even and odd. Even parity is defined that the sum of all transmitted bits in a symbol (including the parity bit) is even; odd parity is defined correspondingly. That is, even parity is the exclusive-or of all the data bits (see image on the right), while odd…