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Pump up the charge: Getting -5V from a 5V power supply
When it comes to electronics, I am a woman of simple interests. Ideally, I only want to care about one voltage, and ground– there’s a reason I did so much be...
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LaTeX Finite Automata and State Diagrams with Tikz
This short guide collects some examples of drawing finite state machines using the Tikz LaTeX library.
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The Tarnished Moon
Remote sensing observations reveal the presence of ferric iron in the form of the mineral hematite at high latitudes on the Moon, possibly the product of reaction of ferrous iron on the Moon with oxygen from the Earth�s upper atmosphere.
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A Macintosh History 85.10
The creation of the original Macintosh has been extensively studied and written about, but what happened after it launched? What was it like to own a Macintosh in the mid-eighties? I intend to tell this story of the Macintosh through the pages of MacUser.
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Synthetic Cartilage (2020)
The thin, slippery layer of cartilage between the bones in the knee is magical stuff: strong enough to withstand a person’s weight, but soft and supple enough to cushion the joint against impact, over decades of repeat use. That combination of soft-yet-strong has been hard to reproduce in the lab. But now, Duke…
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Slitter: A slab allocator that trusts, but verifies
Slitter is Backtrace’s deliberately middle-of-the-road thread-caching slab allocator, with explicit allocation class tags (rather than derived from the object’s size class). It’s mostly written in Rust, and we use it in our C backend server. Slitter’s design is about as standard as it gets: we hope to dedicate the…
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FemtoStar: Taking Aim for the Stars
Networking and communication is something that has been on our minds as of late. As many of you are surely aware, we have started developing our own solution to private and secure peer-to-peer and group text messaging based on the PineDio gateway system, available next month. While we have high hopes for this system…
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U.S. Church Membership Falls Below Majority for First Time
For the first time in Gallup's polling history, less than half of U.S. adults report belonging to a church, synagogue or mosque.
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Adventures using and repairing an X131e laptop from 2011
This article covers several repairs, one including reverse engineering the BIOS to allow replacement parts. Feel free to scroll down and skip to this content.
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From zero to hero: contributing to open source (2017)
Do you ever get the feeling that you are always a consumer and never a contributor to a library? Would you like to get more involved in open source projects and don’t know how? This is the&nb…
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Translating My Z3 Tutorial to Coq
A blog about life, programming, math, logic, and physics.
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Open sourcing Pixie under Apache 2.0 license
Pixie Blog
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Annotated explanation of David Beazley's dataklasses
David Beazley on Twitter :
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Beyond coupling and cohesion: strategies for un-fucking yourself
This post belongs in the ‘highly speculative’ category. It contains ideas that I’ve yet to flesh out and properly pin down. Reader beware!
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Cloudflare's Handling of an RCE Vulnerability in Cdnjs
Recently, a RCE vulnerability in the way cdnjs’ backend is automatically keeping web resources up to date has been disclosed. Read about how Cloudflare handled the security incident and what will prevent similar exploits in the future.
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Arti, a pure-Rust Tor implementation
Greetings! Today I'm happy to announce a new era in Tor implementation. Over the past year or so, we've been working on "Arti", a project to rewrite Tor in Rust. Thanks to funding from Zcash Open Major Grants (ZOMG), we can finally put the Arti project up in our priorities list, and devote more time to it. Below I'll…
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Bitcoin Core Lead Maintainer Steps Back, Encourages Decentralization
Recent events have made me reflect on a few things in my life I was already thinking about for a while. Also, responses on social media have made me realize that people have strange expectations from me, and what my role in the Bitcoin Core project is.
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Reflections on E-Bikes
E-biking has made me rethink things about my city, cities in general, and mobility as a human need and right. Here are things that have struck me while learning to use (e)bikes for transportation.
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People are realizing that degrowth is bad
The mad schemes degrowthers advocate are a fantasy that distracts us from real efforts to save the planet
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Toyota Develops Packaged Fuel Cell System Module for Hydrogen Utilization
Toyota Motor Corporation (Toyota) has developed a product that packages a fuel cell (FC) system into a compact module and plans to begin selling it in the spring of 2021 or later. The new module will be easily utilized by companies that are developing and manufacturing FC products for wide variety of applications…
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‘Horizon Workrooms’: remote collaboration reimagined
The way we work is changing. More people are working remotely, more people want flexible work options, and more people are re-thinking what it means to be in an office. So today, we’re excited to launch the open beta of Horizon Workrooms, available for free on Oculus Quest 2 in all countries where Quest 2 is supported.