skysight-inc/HackerNews huggingface dataset:
Almost none of that is true, or it's only true if the lighting is designed incorrectly. Try to try it for yourself.

The recommendation of using red light to preserve night vision is mostly a myth. While at the same absolute brightness red light indeed reduces night vission less, you need a much more powerful red light source to reach the same subjective brightness, which cancels out any potential benefit.

The same is true for outdoor lighting. The eye is the most sensitive to ~505 nm blue-green light, so you need much dimmer white/blue-green light sources to reach equal visibility with orange ones, which both saves energy and reduces light polution. White LEDs are only a problem where no compensation was made for their higher subjective brightness. When LED lighting is used correctly, it's quite pleasant and it looks kind of like unusually good moonlight.

No you can't use dim orange/"warm white" lights, because human vision can't night adapt to them, it needs the short wavelenghts for that which are missing from these light sources.

It's not true that high color temperature LEDs are wasteful, on the contrary, low color temperature LEDs are inherently less efficient. Warm white will always be less efficient than more bluish light and there is nothing that can be done about that, since it's a feature of our vision.

And what I meant in my previous comment is that it's likely that the exposure to unnaturally low color temperature light is what causes nearsightedness: http://www.nature.com/news/the-myopia-boom-1.17120 and http://iovs.arvojournals.org/article.aspx?articleid=2127682
Twilio | San Francisco | Full-time Onsite Engineer | API Tools

Not every developer can get excited about tooling, but you're different. You believe that tools should conform to a developer's workflow and not the other way around. You want to help Twilio developers easily debug problems and thoroughly test their software so that they can focus on shipping. You're excited to use your experience as a developer to envision and build tooling for cloud APIs that have never been seen before. You want to help set the new bar for the kind of tooling that developers will come to expect from all API providers.

Hiring Manager: Carter Rabasa, carter@twilio.com
Rational people tend to be progressive and "left leaning" (by American standards; by world standards this country is a right-wing powder keg). The sheer idiocy of the American right is certainly relevant to hackers as an interesting and difficult problem, just like the housing situation in San Francisco or that malaria and Alzheimer's continue to exist.
Bringing Google Cloud Platform closer to more people and businesses
Likely you'd need relay sats to beam the energy as microwave then down to the best groundstation location. This isn't an optimal solution I think since it would require sats that could change their orbit to link up (even if you had them setup their initial orbits as a grid it still would require adjustments).
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PhD in applied and computational mathematics (Old Dominion University, Norfolk, VA, USA) with published research in statistics, numerical analysis, and functional analysis. Strong interest in software development/engineering. Loves algorithms and programming challenges. Willing to learn anything. Happy to do statistics/data analysis as well. Comfortable with Agile/Scrum development methodology. Comfortable working remote, individually, or in a team.

I'm searching for work within the tech sector, preferably within Europe and Asia. I'm open to a wide variety of technical jobs and really want to have serious programming as part of my daily responsibilities. Get in contact if you are looking for someone with strong analytical problem solving skills and the willingness to put in whatever effort is needed to get the job done.

Location: Berlin, Germany

Citizenship: American citizen

Remote: Yes

Willing to Relocate: Yes, within Europe/Asia

Technologies: C/C++, Python, Java, JavaScript, SQL, Linux, Matlab, R, Git, much more...

CV: https://dk.linkedin.com/in/charlesharrisku (Feel free to connect)

Link to published research: https://www.dropbox.com/sh/8gy9zyfa79x9ebq/AACwBkwaO45K4H4X_....

Email: bwg732@alumni.ku.dk

Skype: charrisku
Instaprint | Brooklyn, New York - ONSITE | Front-End/UI Engineer

Instaprint is a photography oriented hardware/software company. Our most popular product is our Instagram photo-booth which we rent out globally. We’re a small core team of 3 engineers that do both hardware (electronics, mechanical) and software development. We’re looking for an accomplished front-end engineer at the top of his/her game that are looking for a role to push the boundaries of what is possible to do in the browser.

You need to be a highly experienced software engineer that can lead our front end development. This includes building out new products and also support systems for our global operations team. You need outstanding html, css and js skills and be familiar with everything else that comes with coding for the browser (webgl/websockets/ui frameworks etc). Full-stack and mobile development is a bonus. Things we like and use a lot: python (django), postgres, nginx, nodejs, linux, aws, react/flux.

We’re based in Dumbo Brooklyn (NY), we have a large workshop and electronics rework station (we do a lot of prototyping and production in our studio). Employees get unlimited vacation days, weekly friday beers, well stocked fridge with snacks and drinks, pick your own laptop/work setup. A few times a year we take a day of and get everyone out of the office to do something fun.

Let me know if you are interested! mattias@instaprint.me
https://instaprint.me/
I guess I'm not surprised by the lack of EMV capable card readers I still see in the US. Having worked in this space in the past, I am always checking out the payment terminals at the stored I visit. I've even seen some larger merchants that I frequent upgrade their PIN pads recently but to non-EMV capable models.

If the big-box stores aren't getting it done there is little hope for the mom & pop type stores who will be forced to either stop taking cards or accept the liability for fraud since it's unlikely the acquiring banks will want to hold the bag for their customers once the card brands pass it downstream.
UX Designer Salaries Around the World
The github for the project itself, along with the manual, is here: https://github.com/JohnEarnest/ok/tree/gh-pages/ike
This would require generating collisions for hash (e.g. sha385). We can trust the hash because SR?I already assumes the hash function works in the integrity="" attribute.
The Huffington Post debuts a bold new design
> To put this in relatable terms, it's like walking down a country road and coming upon a crate of apples. While they don't say they are free, they look kind of free, and you're hungry.

This, I think, is where you and I disagree: the web was founded on the free exchange of information, where when you put something online, it's free (and then later, it's free unless you ask money for it via paywall etc). So it's more like deciding that an unspoken transaction is taking place and it should benefit you in some way if I pick up a sofa that you left on the curb. Yes I am benefiting from this furniture, and yes it's something I could have paid for elsewhere and you could have chosen to sell. And if I see you while I'm picking it up I may thank you. But that's as far as my obligation will go, and if you try telling me about how unethical i'm being by cleaning the couch before I use it (and in so doing throwing away the flyers you've stuffed under the cushions without reading them) then I will think you're being a little ridiculous.

I think I'm pulling the metaphor a little far here and I apologize for that, but I stand firm on the opinion that if you put a resource up on the internet, and you do not claim otherwise, then I have no obligation to you for consuming it. And the other thing is I have never seen a site that asks me not to use it if I block ads, a request I fully respect. Only ones that whine about how I should be less unethical and allow unknown third parties to violate my privacy and security and themselves make the lions' share of the profits so that the website can scrabble a few dimes themselves, a request that I do not respect in the least.
I'm an european citizen who just moved to London and I can attest that is insane trying to find a room in London. A room! I'm not even talking about a house.

It's so complicated that there are flatmatting speed dating events. I've been to 5 or 6 now and the ratio is like 15:1.

There are even ads on the tube for websites with that purpose.

I've spent more than 2 weeks as a full time job! trying to find a place is at walking distance (0-15m) from a tube station. Any! tube station. And there are a lot of them.

Finally settled with long term Airbnb room. Which was what I should have done in the first place!

750£ for a room, which is on par with what is being offered in non-Airbnb sites.

To put it in perspective the average salary in London is £35k, which gives ~ £2,240 liquid per month. A studio costs you between 1k and 1.5k. Add bills, council tax, transportation (which is quite expensive), and you don't end up with much at the end of the month.

If you're emigrating to London and don't have a job and no friend to help you – despite having money – go with Airbnb.

If you insist on ignoring that advice, then please avoid agents like the plague! They'll ditch appointments making you waste 2h, ask for 12 months upfront, and leech their 250£ commission from you for basically doing nothing.

In the recent years there has been more people moving into London and fewer houses being built. London has a housing problem and the Mayor should fix it.

Right now we have a generation of young people in their 20s to early 30s living in houses of 3 to 6 people. This is just nonsensical to me.

If you are unable to have your own life in order then how are you supposed to go further and do things like constitute a family. Hence the birth rate decline and the need for a crazy influx of immigrants. In the name of what? Banks and real estate?

https://www.london.gov.uk/sites/default/files/Housing%20in%2...
Genetic study reveals new links between lung disease and smoking behavior
Mongeez: MongoDB Easy Change Management
He is a sci-fi author, so his profession is to think of "what if"
Couldn't researchers just adopt basic fission calculations to work for this application?

I mean its fundamentally the same problem. Large particles being impacted by smaller particles causing them to emit more smaller particles. I tried to work though this yesterday, but I'm not sure how to translate the free-space constant to orbital-scale units.
Next can we apply it to whole HTML documents (including iFrames)? Then malicious ISPs/malware/etc would be unable to inject their ad spam code.
That's Yale the lock company, not Yale the university. (The two are both named after people named Yale, who were distant relatives.)
BRUTE FORCE MODELING OF THE KESSLER SYNDROME, Lawrence Livermore National Laboratory
http://www.amostech.com/TechnicalPapers/2012/Orbital_Debris/...

Interesting paper where supercomputer was used to simulate the increase of particles greater than 10 cm in size over 100 years with high temporal resolution.

Results for BAU (business and usual) and BAU-d business as usual with decreasing breakup rate don't look so good: "linear growth of the catalog size with time, to ~65,000 objects by year 2100." 100 years from now there will be 50 conjunctions per day and 3 collisions per year.
CLVmetrics |Lead Front-End Engineer - Early Employee | Philadelphia, PA w/ NYC 2016 | Onsite w/ some Remote

CLVmetrics (http://www.clvmetrics.com) is a technology company with a simple but important belief: companies should treat their customers differently based on each customer’s lifetime value (CLV) to the business.

Our goal is to enable firms to do so by providing access to the cutting-edge statistical models of co-founder Wharton Professor Peter Fader that forecast customer behavior far into the future.

To accomplish this goal and allow companies to implement customer-centric marketing strategies, our world-class team of statisticians, marketers, and engineers is building an enterprise-grade cloud-based analytics suite to commercialize our own award-winning research on consumer behavior, marketing theory, and statistics.

Our team has the technical expertise across stack to implement our models at scale, and we are looking to add an expert front-end developer to the team to help us design and develop a stunning front-end that will allow our customers to discover novel insights about their customers, develop marketing interventions around CLV, and track the results of those actions.

Candidates should be comfortable with a major JS framework such as React/Angular and a visualization library such as d3. Candidates should also have a strong sense for UI/UX.

The key issues that you will face are:

-Presenting a new metric: Predictive CLV is a new metric that has never been accessible before. The success of its penetration depends critically on effective communication to our clients.

-Visualization of massive data sets: We need to present output from millions of customers and billions of transactions in an elegant and simple-to-understand fashion.

-Design for different stakeholders: We need dashboards and visualizations appropriate for a range of audiences from performance marketers to the C-suite.

If these engineering challenges excite you, please contact justin@clvmetrics.com.
So there is zero incentive to replace a non-emv reader. Once you have to NOT use the stripe.

It is a big problem for stores. Credit cards have both so stores have to force only those transactions to the EMV.

The machines need to be smart enough to figure out if the card has both and not allow the stripe transaction.
I understand that foreseeing who will be a successful CEO is kind of holly grail of management theory, but how come so many incompetent managers keep ruining their companies for so long only to leave with golden parachutes?
You are right, I think I confused the scientific Kinesiology with the esoteric one.

http://skepdic.com/kinesiologist.html

thanks for your comment!
Unfortunately I can't edit the original post.
The satellite that the US shot down was in a swiftly decaying orbit. That means that the periphrasis for all the debris was at least that far down and with the smaller ballistic coefficient of the debris it's all gone now.
> Even a fleck of shed paint a tenth of a millimeter across carries as much kinetic energy as a rifle bullet when it's traveling at orbital velocity,

Relative to an object stationary on the ground, yes. But every satellite is already moving at orbital velocity itself. If two satellites are orbiting in the same direction and one blows up, its pieces will not hit the other with full orbital velocity.

> any launch at all becomes a game of Russian roulette.

Maybe if the situation gets this bad, then the mitigation actually gets easier: just send up a lot of cheap big rockets on parabolic trajectories to orbital height. They will get hit, all the pieces will fall below orbital velocity, and fall down into the atmosphere. We could even launch cheap parabolic trajectory "blockers" to clear holes in the debris field for launches to higher orbits or escape trajectories.
> Nobody forces you to live in an expensive city.

It takes money move, to or from any city. It's nice that you were able to make it work, and yes, it means others could as well but you wold look like a little less of an asshole if you would consider not everyone is in the same situation as you were.

Were you single

Did you have kids

Did you have any medical conditions that needed care

Did you use to have a better job before

That's just a few things that are part of everyday, normal life that can make the cost of moving and living on very little somewhat difficult.

> Nobody makes you buy a million dollar house

I don't remember saying anything close to that.
Stardog 4: Polyglot Graph Database
I don't feel that a $280 dollar book on Real Analysis is relevant for HN...
> Rational people tend to be progressive and "left leaning"

Rational people tend to be rational. And rational people don't dismiss the views of others because they don't share them.
What is the name of your company?
That would only force people to confront the uncomfortable reality that just because data is about you doesn't mean you own it.
Startups Pledge to Cover Breast Cancer Testing Costs Through Color Genomics
Maybe I can define my thoughts using some of your words.

>People have instances of it every day. Most instances are easily solved by existing algorithms, but some instances are not.

Ok, if you show me an instance an actual person has, I would consider it a 'practical problem', now, 'practical instance'.

Given an instance, you could compute "benefit" as such: (resources_used_by_using_solution_provided_by_"existing_algorithms") - (resources_used_by_using_solution_provided_by_sub_NP_space_time_solver|presumably_optimal)

Note, I'm not (directly) talking about the resources used for the computation, but rather the resources used in the real-world by taking advice from an algorithm. For instance, in the UPS example, fuel and labor costs depend on the exact route decided by UPS's logistics algorithm. Most likely that route is not 'optimal', but may be pretty close (not many resources would be saved by using the optimal route over whatever other route UPS ends up driving).

>What would you do with it?

I would certainly look at it and at least make a cursory attempt at solving it. However, the reason I originally asked the question was so that I could have a legitimate problem (with instances) to give to someone who claims a P=NP proof in addition to an algorithm.

He can solve most random subset sum problems, of the kind I gave you, with decently sized sets (thousands of elements) and randomly selected targets very quickly. However, I think that random subset sum problems might be pretty easy. Further, I'm not sure of the precise way to measure the complexity of the algorithm when just given a list of integers in ASCII. I assume you really need to analyze things at the bit level, instead of just the number of ASCII characters.

But, assuming P=NP and we have a runnable algorithm (which I don't necessary believe, but do allow for), I am interested in finding and solving the problems that would have the largest benefit (as previously defined).

Assume you can only solve a single instance at a time, what order do you solve them in?

Edit about terminology:

Like I said, if you have a standard glossary I could probably wield it effectively in our conversation.

However, I typically find that there are few globally standard terms. Instead, each sub-culture seems to define their own very technical definitions of words. Sometimes these are similar to other culture's definitions, sometimes not.

Selecting which sub-cultures to borrow from is tricky and there is certainly no right answer, but I also see that there is tremendous value in having similar definitions.

If you do have a good reference, I'd appreciate it.
I did it independently in a different venue around the corner from the main night. I saw it as a courtesy to tell him what I was doing, and the rest is history. Clearly I had to spend time learning how to DJ, buying the right records, promoting it, etc. So there was definitely an aspect of making my own luck, but that is also what many wannabe DJs do without success.
Maybe a ring of relay sats around the planet? With relatively infrequent changes in energy switching (as ground stations are built) a static setup could be formed. Then just modulate the beams (day/night demand flux).

For the original plan, there's no actual requirement to steer the beam. A station isn't so large that one city couldn't consume the whole capacity. So still a reason to build the thing.
This is a very significant problem indeed. In our reference rot study (http://dx.doi.org/10.1371/journal.pone.0115253), we found that a very significant amount of papers were referenced by means of their landing page URL instead of by their DOI URL. As part of the "Signposting the Scholarly Web" work, we looked into this issue and thought that using a "canonical" link from the landing page URL to the DOI URL would be a good step.

It needs to be understood that "canonical" was really introduced in the context of search engine optimization and is supported by web search engines. In essence, if a landing page would have a "canonical" link to the DOI RL, the content of the landing page would be indexed under the DOI URL.

For browsers, the desired behavior would be to bookmark a page that has a "canonical" link under the canonical URL instead of the page's URL. At this time, to the best of my knowledge, this is not supported by browsers. However, it seems to me that it should not be impossible to achieve this, if, for example, the Persistent Identifier community (DOI, handle, PURL, ark, ...) would lobby for it. Alternatively, one could write an RFC and define another link relation type specifically for this relation type between landing page and persistent identifier. And lobby browser manufacturers to implement the "right" bookmarking behavior for it. But, the difference between "canonical" and this special-purpose relation type might be too subtle to make it through IANA registration scrutiny.
> The sheer idiocy of the American right

Yes conservatives bad, progressives good. Except when it comes to tax policy, right? Because SV wouldn't exist at all if the investment returns were taxed at a 50%-80% rate. Then instead of looking for a 1000x unicorn, everyone would be hunting 5000x-10000x unicorns. Which are rarer still.
You should read the parts where it says US has done similar tests and that "In response to US weaponisation of space, the Chinese started a space defense program, including anti-satellite defense."

That being said, this is a great example related to the OP (e.g. number and sizes of tracked debris and for how long they remain dangerous).
My current project is an interface to get detailed application performance statistics off a clustered system. So it connects to a local database and has a configurable list of system checks that it can run. Then it has a defined API that is consumed by the Polymer front end. Rust is nice in that I can do all sorts of great clustering and network programming, and then have a thread that exposes the WebUI and all of that is wrapped up in a single binary. That I can just push to systems and execute.
I like the concept but there will probably more failed integrity check because of procedural mess-ups than actual attacks.
Supports semantic graphs (RDF, SPARQL, OWL, rules) and TinkerPop 3, Gremlin, property graphs interchangeably.
I believe that would be true of geosynchronous satellites, otherwise there would be no benefit to being geosynchronous. Any pieces that break off should alter their orbit enough to be out of the way.

Edit: I just got dinged for this comment, if there's a flaw in my reasoning or a study that refutes it please let me know.
Which is why I have a lot of sympathy for the majority of people on the planet. For the typical HN commenter, though, who is either highly compensated or at least in an industry with a lot of job security, I have to roll my eyes when people act so baffled as to how one can possibly save money.

I am well compensated now, but right after college I was making 15k a year (it was in the arts) and I still managed to save money.
Designing icons. Follow these rules
SEEKING WORK - Remote

I'm a front-end developer with 6 years experience (split between full-time and freelancing), based in the UK. I have previous experience with US startups.

Skills: HTML5/CSS3, JavaScript with and without jQuery, Bootstrap, Gulp.js, Sass, PHP, MySQL, Laravel, Git

A recent task management app that I'm building with AngularJS, Laravel and Bootstrap - http://github.com/chrisloftus/tasks

You can view my portfolio here - http://chrisloftus.co/

Please contact me - chrisloft - at gmail - if you have a project you would like to talk about.