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ocrow

101 karma · joined February 23, 2021

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ocrow··on Show HN: I created Units Converter that contains 5000 units across 78 categories
You could add GeV/c2 (giga-electronvolts per speed of light squared) as a unit of weight that is used by physicists for sub-atomic particle mass.
ocrow··on High-Performance Graph Databases
A social media service for hundreds of millions of users?
ocrow··on Show HN: I built my first Cyberdeck
Seems like it could work well to run a music tracker.
ocrow··on New Yorkers want to stop landlords from using facial recognition
It doesn't even require that the tenant be trying to "capitalize". Perhaps they are subletting for a few weeks, or just having friends stay over on the regular. If that is disallowed by the lease agreement, it's enough for the landlord to begin an eviction proceeding.
ocrow··on Replika AI: Your Money or Your Wife
ERP: Erotic Roleplay, not Enterprise Resource Planning
ocrow··on Pure Sh Bible
Bash comes free. To get zsh I have to convince the sysadmins of the need for it. I'll stick with the (currently) lowest common denominator.
ocrow··on Google Authenticator now supports Google Account synchronization
Yep. Also missing from the announcement are any instructions on what people need to do to use the feature.
ocrow··on The banality of floods (and droughts)
I don't expect that newspapers will suddenly decide to start doing in depth investigations into systemic failures of hydrologic systems. Nonetheless it's hard to develop nuanced perspectives on what needs changing without knowing what the current system does well and what it does poorly and why it is the way that it is.

If we're going to have sensible public policy we need to educate ourselves better so that we're not always just reacting to the immediate crisis, but actually developing policies that are workable.

ocrow··on Real World Recommendation System
These recommendation systems take control away from individuals over what content they see and replace that choice with black box algorithms that don't explain why you are seeing the content that you are or what other content was excluded. All of the companies who have deployed these content selection algorithms could have also given you manual choice over the content that you see, but chose instead to let the algorithm solely determine the content of your feed, either removing the manual option entirely or burying it so thoroughly that no one bothers to use it.

These algorithms are not benign. They make choices about what information you consume, whose opinions you read, what movies you watch, what products you are exposed to, even which politicians messages you hear.

When people complain about the takeover of algorithms, they don't mean databases or web interfaces. They mean this: content selection or preference algorithms.

We should be deeply suspicious. We should demand greater accountability. We should require that the algorithms explain themselves and offer alternatives. We should implement better. Give control back to the users in meaningful ways

If software engineering is indeed a profession, our professional responsibilities include tempering the damaging effects of content selection algorithms.

ocrow··on ThorCon: Cheap, reliable, CO2-free electric power
On the design page they describe this as a molten salt reactor with dissolved nuclear fuel. One of the principle difficulties designing this type of reactor is the choice of materials used to conduct the liquid fuel, which is very hot, caustic, and radioactive.

Steel and aluminum are out, as they are both chemically reactive at those temperatures. Other materials such as nickel alloys or certain ceramics may be possible, but the radioactivity of the fuel tends to embrittle materials over time as atoms in the containing material are converted by exposure to the fuel's neutron emissions.

The affected components include not just the reactor vessel, but also pipes, and in some MSR designs also pumps and heat exchangers. If those are subject to regular replacement, the used components are also low-grade nuclear waste and must be properly contained indefinitely.

https://en.m.wikipedia.org/wiki/Molten_salt_reactor

The other main impediment is regulatory: since we've never had commercial reactors of this type we don't have a legal framework to license these types of reactors to be run (and eventually decommissioned) safely.

At least, these are my novice understandings from some skeptical background reading. If someone with actual nuclear industry and/or research experience has a more detailed understanding, feel free to weigh in and correct me.

ocrow··on Modern Microprocessors – A 90-Minute Guide (2001-2016)
I would love for an update that covers recent developments in SOC integrations, for example the onboarding of RAM and neural processing in the M1 chip.
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