skysight-inc/HackerNews huggingface dataset:
Ask HN: How can mechanical movements be designed systematically?
Is there any systematic method for designing/"programming" passive mechanical movements where, given mechanical input behavior, an output behavior is produced by the design?
If one can come up with a solution which produces the desired behavior, it can be modeled in a CAD tool. But how do you come up with what to model?

Here are several resources I am aware of but do not know how to piece together.

- http://507movements.com/

- https://www.youtube.com/user/thang010146

- https://www.youtube.com/user/YesYenGraphiTech

--

My specific input is a row of rods which over time independently actuate (go up) and return to their initial position (return back down). No more than, say, 6 rods are ever up at a given time.

The output is a separate register of rods (o_1,o_2,o_3,o_4,o_5,o_6) with the following behavior: At any time, say the input rods (b_1,...,b_k) are actuated, and became actuated in their labeled order. When some of them, say (b_i), i in S, de-actuate, then (o_i), i in S, should rapidly "fire," i.e. actuate then de-actuate.

This process has to be able to repeat over and over, so after an output o_i fires the (o_{i+1},...,o_6) need to somehow get reset to anticipate future input rod actuations.

I know an easy answer is to just use a microcontroller but I am really only interested in a purely mechanical solution.
Google Deepmind releases structure predictions for coronavirus linked proteins
HOLY MOLY

NSFW tag, my friend.
What? Each slack workspace is entirely different. You can't just add someone on Slack!

"Hey friend, I'm getting off Facebook, What's a Slack workspace you're in? I'll send you messages that way .."

...you delete your facebook and never talk to this friend ever again.

It's not that there aren't alternatives. It's that people don't use them. It's not like back when everyone had AIM, Yahoo and MSN and you could add people on all three and group them together in Audium/Pidgin/Trillian. Facebook has literally bought most of the competitors (Instagram, WhatsApp, etc.)
It's in the 3rd paragraph:

Simply put, Security Assertion Markup Language (better known as its acronym, SAML) is a protocol for authenticating to web applications. Federating identities is a common practice that amounts to having user identities stored across discrete applications and organizations. SAML allows these federated apps and organizations to communicate and trust one another’s users.
I'd rather be taxed by higher list prices than by some .0875 surcharge that is inconveniently difficult to calculate in one's head.

If I pick up an item that claims to be $1.99, and plunk it down on the counter with $2, I don't want the cashier to say "That'll be $2.16, please." The label says $1.99 . They could have added the tax when they printed it. If they wanted the label price to be $1.99, they could have made the base price $1.83, and added the tax back in to make it $1.99 on the shelf.

If I go to a concession stand at a ball game, their list prices are all-taxes-included. $2 for a hot dog means if I ask for a hot dog, and pay $2 exactly, no one needs to mess around with change. Why can't other merchants do that?

It's not like consumers can just choose to stop buying things if the sales tax goes up. "What's that? Sales taxes went from 8.75% to 9.15% ? Oh, never mind, then, I'll just stop buying anything from here on out."
Honestly I've been happy with 90% of what I get on AliExpress and it's rare to spend more than $10 on whatever it is anyway. I've saved many hundreds of dollars over buying from Amazon (often anyway from twice to ten times as expensive).

For the stuff the sucks, I throw it in the trash and move on with my life. It's usually only a few dollars
The term carries a negative connotation in that it implies guilt for the collapse.
Very cool read! Apache/nginx logs can be really interesting to look through sometimes.

It is sad that the Referer Header is pretty much dead now. Looking at the Apache logs used to be a useful way to see what was going on and why a site was busy suddenly. Those headers were also a great way to gather whatever analytics was called before it became what it is now. I guess we just called them 'stats' because we didn't care about ads?

I once was looking at the logs for whatever reason and spotted a link back to what was clearly a webmail system at a decent sized .edu and decided to click that link. BOOM. I was looking at someone's inbox. There was no authentication at all on the email there. I did report that, hopefully they fixed it fast.
Yes, that's the problem this blog try to explain. NULL means "no value", but this is not true for all the languages. So you better know what is the value of NULL in the language you are trying to use.
As he mentioned, immutable images make those type of tools largely moot.
Gerrymandering is overstated and is held up to be the boogeyman of either party. The reality is much more believable:

Political scientists Jowei Chen of the University of Michigan and Jonathan Rodden of Stanford University’s Hoover Institution conducted an in-depth study in 2013 of legislative-district lines, using computer simulations of precinct-by-precinct voting patterns to map alternative redistricting plans without regard to partisanship or race. What they concluded was that Republicans have a natural advantage conferred by the “human geography” of Democratic voters’ concentrating disproportionately in overwhelmingly liberal urban districts while Republican voters are more evenly distributed in the suburban, exurban, small-town, and rural districts.

Chen and Rodden found that this “unintentional gerrymandering” produced an average Republican bias of five points nationwide, or seven to eight points in such states as Pennsylvania and Georgia.In Florida, their main test case, they used the 50–50 precinct-by-precinct Bush and Gore votes and found, based on random computer simulations of a map of 25 districts (the number of House districts in the 2002 redistricting), that Republicans had an average of 61 percent of the House seats. As Chen and Rodden explained in early 2014: “In the vast majority of states, our nonpartisan simulations produced Republican seat shares that were not much different from the actual numbers in the last election.” That’s before even considering the impact of the VRA.

And while the 241–194 House majority elected in 2016 benefited from a 21-seat advantage (even as House Republicans had 50.6 percent of the two-party national vote), a look at the numbers suggests that most of this advantage was owing to factors other than gerrymandering.
Exactly. 9 out of 10 managers will give you more money. They are not going to offer it to you, normally, because they are not a charity. They want to give you the least amount of money that you will except.

Secondly, who ever gets fired for asking for a raise? I mean, that is not normal. And if that does happen to you, it's most likely of some other underlying factors, where asking for a raise is just the last drop.
The problem isn't lack of energy. The problem is muscle and cardio exhaustion. You feel great, not tired, just your muscles stop working and you run out breath. So I don't think that vitamin, electrolytes, or more calories will help. If you're lifting seriously, you're already consuming plenty of those things.
You're talking about being nice, not being an asshole. Assholes are people who come in and shit all over everything instead of trying to play fair. People who are not nice can be fair. Take as an analogy the difference between social class and economic class, and how people can have a social class that's different from their economic class.
I wouldn't count Bill Gates entirely self made and so would himself. His parents, his colleagues, and every one around him played a major role in success. If anything, I'd say luck and timing are more important than being nice.
That's a common misconception. Hugo Boss didn't design the Nazi uniforms, but they manufactured it.
You are right but unfortunately almost everyone calculates the mortality rate based on confirmed cases alone, and that leads to a gross over-estimation of the dangerosity of this virus. So these visualisations are still kind of misleading in a way.
Switched to the duck 3 months ago. Don't really feel any pain really.
Warning: Tangential, rambling thoughts ahead

I recall from someone in the field in art therapy who discussed with me the difference between being artistic and being creative. Being an artist implies the pursuit of technical mastery of a certain craft, whereas being creative is the ability to create novel ideas through various means. These certainly aren't mutually exclusive properties, as many of the legendary artists of the past are those who excelled in both.

Though it can feel discouraging to perceive that one lacks a natural affinity for either of these qualities (I tend to fall more into the creative side of things rather than artistic), this also gives rise to the long list of successful artistic/creative duos. For example, duos are pretty common in the webcomic community (Penny Arcade being the most obvious example).

It's good to strive to improve oneself, but should the right opportunity arise, working together with other people who can make up for those (perceived) shortcomings has at least as much potential as being a solo artist/creative. And being involved with a community can provide new insights which can lead to personal growth in creativity and mastery.
well not to excuse FEMA for issues it has had but you are guilty of the same issue many other are, you grossly underestimate the true scope of the problem you are suggesting we gear up for.

I remember all the bellyaching over the response to Katrina and FEMA if not other Federal agencies which paid lip service to the area affected but not the realization of that meant. Hint, the affected area was the size of Great Britain.

Comparing how China does it ignores that we don't truly know how China does it. We get what comes out of China and then end up having to rely on sources that may not be reputable for more truth. They simply can make history what they want it to be, even WHO didn't stand up to them as others have completely collapsed when it comes to pursuing cornavirus and previous flu related strains that just magically appear in China.

Back to FEMA. Understand that each state and locality all also contribute to disaster preparedness but it all comes down to what will likely happen and how to get resources to the affected groups. Many of these groups are loathe towards any relinquishment of authority to the Federal government; heck some cities don't even care for state intervention. Worse some of the combativeness occurs just because of political party differences! So coordinate your national response with fifty states and how many cities? We are setup so that a Federal government cannot just curb stomp a state's rights.

By the way, not only do we spend nearly a trillion on defense but that is less than twenty percent of the Federal expenditure. There is a lot of money that can be better used but the default of just blaming the defense budget grows less and less useful when as a percentage of the budget it is falling behind; not fast enough but both parties seem quite willing to prop it up
That's the attitude I'm talking about. There's nothing to fix! I wouldn't have it any other way. I don't want to live close to work, if it means being packed into a sardine can apartment, sharing a wall with my neighbor. I don't want to pay $1,000/sq ft. I don't want a book-sized backyard. Not everyone thinks "dense urban" is the best way to live, and downvotes won't change that.
Could you give an example <company> or <person> query that gives you "a wall of ads and videos"?

I just tried a number of companies and it always shows a full column with info about the company (name, logo, stock value, founders, social media profiles, etc.)
If the person didn't realize they were doing X, which is pretty common, a flat declaration like that sets the wrong tone. As the article mentioned, you're trying to help them understand what's wrong and correct it, not declare them guilty and issue a warning as punishment.
I gave up because I felt awful ... problems sleeping, strong heart palpitations, hair falling off, left foot going numb, etc... all symptoms of nutrient deficiencies, which I couldn't correct via food or with supplements and that started disappearing within a week after giving up.

And that entire time I did not lose weight, I actually gained a pound or two.

If you're interested in losing weight, find a strategy for eating less (by playing with what you eat or with meal timing). The only reason keto works for some people is because it leads to a spontaneous drop in appetite, due to cutting entire food groups from the diet, thus making the food you eat less palatable. And the extra protein sure helps. But it only works short term, after which you start enjoying bacon and butter, so the inevitable plateau happens and then you get the line about your metabolism needing to "heal" before losing weight, which is bullshit, as the causality is reversed (i.e. your metabolism is broken because you ate too much and exposed adipocytes tissue to an energy excess, aka energy poisoning, so the solution is to eat less and to lose weight).

I've lost 55 pounds and kept it off, being almost at my ideal weight. Not with keto.
My biggest concern when considering AMD on Linux is drivers. I see in my feeds Phoronix is constantly reporting on updates to recent kernels. However, most of these power management, etc equivalent features have been available for years from Intel.

How are people finding AMD hardware in the real world wrt Linux on say 4.19 or 5.4 kernels?
Unexpected use of the word intolerance, "caffeine sensitivity returns" -- in this case "intolerance" and "sensitivity" are synonyms, how interesting!
It is valid syntax, you are comparing an "x" with "no value" and result will be "no value"
Yep! I took over a 3 year old product where we're rewriting/refactoring a lot of features that we're poorly engineered (and UX designed). For a bunch of them, the "rewritten" version is just stripping out the feature, because no one is using it or ever has used it.
> Looks at the contents of his FreeNAS.

Damn you got me.

This was pretty much the logic that I used. I was sick of having to worry about data integrity and backups, the amount of arcane knowledge required to do it correctly and safely is immense. FreeNAS has good defaults and good documentation so I got myself a FreeNAS Mini (eventually upgraded to the MiniXL because it is able to take better advantage of zfs).
The Earn IT Act Is Here. Surprise, It’s Still Bad News
I think encouraging people to ask for clarification is super important.

One thing that's helped me receive more clarifying questions is adding pauses while talking. This gives an opportunity for someone to ask questions without interrupting.
I don't think that is true

Warren Buffet' father was a congressman

Larry Page's father was a professor of computer science at University

Sergey Brin's father was professor of mathematics at University and his mother worked at NASA

these are the first three I looked up and they don't look like low or middle class
I've been using DDG for years. It's perfectly fine. What I've found is I don't use general search engines much in general anyways - I use ddg macros like !rust to search rust docs, or other common places I search.
I suffer from an inflammatory disorder and chronic TMD. I wrote my experience of switching to Keto here (this was 2.5 months in, I've stayed fairly strict Keto for nearly 2 years now) - https://medium.com/@iamnayr/2-5-months-on-the-ketogenic-diet...
> by backing out all of our changes and only putting in his changes

That so feels like a mistake because that's the sort of tactic that would completely and utterly remove their capability of ever working as a corporate lawyer ever again for any company.

If that genuinely happened, that lawyer needs to be disbarred, but that's a pretty damn egregious accusation.
GiveCampus hiring Sr Product Manager who cares about education
The problem is that sideloading is so difficult on iOS (you need a Mac, XCode, and then, after spending that $1k you realize that to keep the app on your phone for more than a couple days-one week, you have to pay Apple $99 per year) that people who would usually help open-source projects (where you use whatever tools you want and a free toolchain), have a much higher opportunity cost to getting involved with a iOS project.

If Apple had a mythical developer mode/SEP disengage button (like Macs and Chromebooks do) that voided the warranty, disabled the secure enclave (therefore Apple Pay and system-wide encryption), and put a big warning on the lockscreen in exchange for sideloading access to make development easier/cheaper, I think more people would do it.

Or if they let you build and compile apps on the iPad Pro that is super powerful but still can't be used for anything more taxing than word processing, but I've ranted about that on hn too much.
The date command can also answer this question:

$ date -d 'march 12 2019 + 366 days'
Thu Mar 12 00:00:00 PDT 2020
Wow that's so cool! Wish I could turn this into a screen saver.
> Furthermore, real optimization problems have high connectivity, high weight cost function terms, and require higher precision than available.

Have you seen their hybrid system they just released? https://www.zdnet.com/article/this-cloud-service-lets-you-us...

Looks like it's a strong contender for people who have bigger, higher-connectivity problems that want to get ready for when the quantum processors are bigger.
I'm in the camp of you should do what works for you or what makes you happy (life-lengthening/hacking/whatever be damned), but any extensive reading I've done in trying to treat myself well has just brought me back to the same old information: balance and calories in < calories out.
Do they not have communal tables out in the open?
This Month in Rust GameDev #7 – February 2020
> most people are in ketosis before eating breakfast in the morning, because the liver's glycogen is partially depleted overnight, enough for the liver to produce significant ketones. And nothing will make you enter ketosis faster like skipping a meal or two

There are two claims here that are pretty important and contrary to my understanding and experience:
1) Liver is depleted after usual sleep
2) Fasting is the fastest way to enter ketosis

Even when practicing a very low carb diet your liver is "topped up" through gluconeogenesis while you are sleeping.

If by ketosis you mean the body is producing enough ketones to power itself than the fastest way I know of kickstarting that process is not having carbs for 6 hours then going for a run or lifting heavy weights.

You don't need to starve yourself, you just need to put your body in a scenario where the energy demands overtake the available energy in the form of blood glucose (and strain the stores in the muscle and liver).
Don't respond to emails from random people trying to buy your business. They're all scammy.

If you respond to these, or offers to re-fi your house, or help someone move their royal fortune out of Nigeria, you're indeed going to be dealing with assholes.

If you want to sell your business, take charge and run a competitive bidding process. But ignore unsolicited offers.
Yeah but if every virus is modelled this way then the data is representative...
"But... Moore's Law, more hardware!" he plaintively cries out...
No one knows for sure yet. The most convincing theory I've heard is that it actually is fat...

But fat is an umbrella term. Saturated fat is (almost certainly) benign; eat as much (or as little) as you want.

Omega-6 and omega-3 polyunsaturated fats, on the other hand, are precursors to an important class of hormones called eicosanoids. If you eat too few, too much, or the wrong ratios, you will run into problems.

Our current diet is almost certainly way too high in omega-6 fats; the easy fix is just to stop eating vegetable oils.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5492028/
Hold up. GPS coordinates - yes, but not the sites visited. HTTPS traffic hides the URLs. This is the reason why I can't block anything with HTTPS in it from my Netgear router. By the time the packets hit the router, it's all encoded.

Please correct me if I am wrong.
Even if not, it's still awesome.
>absolutely doesn't work in practice

It demonstrably does, elected leaders get voted out in well functioning democracies all the time. Do some incumbents hang on longer than seems right? Yes, but who gets to decide how long is right? The voters, whether you or I like it or not. Sometimes the voters screw up, but that's their right and it's their right to correct that if they choose to or not if they don't.

For me the key is to be a floating voter. Do not buy into the group-think tribalism of party loyalty, it's a mug's game. I say that, but I've voted for the same part here in the UK except for twice, but to me those two times are crucial. They were actually painful choices to make, but important decisions. To be honest I have also voted on party lines and regretted it. Those two times should really be three.

I really don't like representative democracy where you're voting for a list. It puts power in the hands of party committees, and makes those actually elected beholden to those who put them on the list. Elected officials should never be exposed to that kind of leverage.
Isn't that true of all flu viruses, every year? Meaning this measure is still valid to compare with other flu epidemics.

So that leaves this one at 10X or more fatalities, however you calculate it.
"Never attribute to malice that which can be explained by stupidity."
there's a bad loans crisis in multiple banks, which have been placed under the scanner of the Central Bank. A couple banks collapsed, bunch of them got taken over, others were merged.
We have signs at counters here in New Zealand that informs customers that the store uses ‘Swedish rounding’ for the same reason.
Delete Facebook.
Wasn't the CDC budget cut drastically by the current administration? You reap what you sow.
Yes, which refutes the claim I was responding to. Everyone thinks the problem isn't their representative, it's all the others. Which means they never hold their representative--the only one whom they have control over with their votes--accountable.
I have a 3900x that I have used with the latest ubuntu and now popos. No stability issues at all, performance is great.
Ask HN: Do you open the comments first or the URL?
I still don't see how it's at all reasonable to claim that a device which is proven to execute computation using quantum effects is "not a quantum computer". It's "not a quantum gate model computer", sure, but such things are presently vaporware, so why should they get to claim the term?

To me you sound like an abacus fan who is waiting for Big Abacus to release an even bigger model, while Turing is labouring away with silly gears and cogs that you see no value in.
I'm in the UK and frankly the level of gerrymandering in the US is appalling. I mean it's your system, I hesitate to judge generally speaking, but OMG is your system of redistricting screwed up.
Wait a second. You can't use a privacy themed search engine and expect them to lookup your ip, figure out what city you are in. The entire point of using ddg is to avoid this.
Of the google bangs, I find myself using !gm (google maps) the most.
the demo is fun to try: https://calebj0seph.github.io/spectro/
You can also ask creatively. I've had a few occasions where I told friends about how I've done things like... if their final offer salary range isn't as high as I would have liked but still acceptable, ask for a signing bonus to help make up a difference. The response I've gotten (from a couple of friends) has approached the level of shock, or (from a female friend) almost anger at the realization that they would have never even thought of that. Unsure whether to conclude it's privilege on my part, or conditioning on their part that they wouldn't have thought of it, probably a mix of both.