skysight-inc/HackerNews huggingface dataset:
There's also, at least on a global-energy-system scale, the issue of efficiency. Solar thermal (I'm thinking of solar towers and the like) can heat a medium to about 300, maybe 400 C, and if I'm not mistaken using a conventional steam turbine that can give you a Carnot efficiency of ~25%, maybe 30%. Real generators engineered today are on the level of 90% efficiency, meaning that a solar thermal plant can - practically - convert ~20% of incident solar energy to electricity. Commercial PV will likely not reach that level of efficiency for years, and there are - probably - good ways to improve thermal efficiency beyond this 20%.

Of course, thermal generators required direct incidence (don't work well on diffuse light), but the long and short of it is that with thermal we (may) need about half the total area we would need for PV. (On the other hand, PV can practically uses space - rooftops - which is inaccessible for thermal.)

Nice blog, by the way :-)
This is nothing more than a FUD campaign designed to scare the non-tech, average user into supporting government measures to ban private encryption.

Fear, Uncertainty, and Doubt: Tools of the oppressor.
I understand that there's a prejudice against older people regarding technical ability, but the parent poster didn't actually say anything regarding old people in general, just about his/her grandparents specifically.
Why not both? Some of my favourite classes have said, "Highest of midterms + assignment marks or final exam mark."
See his follow-up for discussion of that and other issues:
http://woodgears.ca/toys/slinky2.html
We all know that PV panels have a limited lifetime, and that building them has environmental cost. But I was wondering about recycling: does anybody know how much energy can be saved by creating new panels using materials from old ones?
The more people who see these articles labeled as FUD, the easier it becomes to prevent governments from justifying this campaign against encryption.
Content-Type Bliss
Not at the moment, we intend to in coming months.
Tomato sauces weaken the non-stick seasoning on my main cast-iron skillet, but frying bacon in it once a week repairs any damage.

My best-seasoned skillet is the one I only use for cornbread, fried eggs, and grilled cheese, since I only cook with oil there.

A good seasoning is something you build up over time: when you first season a grey skillet, it looks unusable for a time, but keep cooking oily foods in it and it will blacken up.

The nice thing is that since it's metal, you can use metal utensils. And if something is badly burned on enough that normal soaking and scouring won't remove it, you can scrape it out with metal tools.
Can you expand on your views on ignorant city ways? Just because you don't need to run a hairdryer does not make everyone else ignorant and clueless.
You don't want a scheme where you know your course mark before the final, because then you have no incentive to try, and median allows this. If your marks are 75, 80, 80, 90, then regardless of what you get on the final, your mark will be 80.
Brewing up a storm: British-grown luxury tea brands go from strength to strength
Greetings,

I do agree that Moore's Law generally holds true. However a better model is an approximation of multiple S-curves, where each S curve represents the beginning, growth, and maturation of each step in technology.

The smearing of S curves and integration of new lines of tech allow for what appears an exponential growth.

Also, I'd like your opinion on http://www.bioinspired.net/ -- Commercially available memristors, albeit high priced.
Free+Video+How+To+Build+A+Mega+List+Of+Leads
I went back to visit my mother once and discovered that for convenience she had started regularly running her cast iron skillets in the dishwasher.

It certainly damaged the seasoning IMO, but not as much as you might expect.

Not that I would ever do that.
Even if a software is on Gnu public license or a free license, the software could be unreadable or difficult to understand for many reasons: not modularity, bad object definition, no comments, legacy piece of code inside the software, and so on..
this is a small experiment: http://synesthesiam.com/posts/what-makes-code-hard-to-unders...
They fired HR and hired all new HR when they laid off 30% of the company :)
You can bruteforce much faster on GPU.

E.g. 20*10^9 ripe160 hashes per second on 8x AMD R9 290X (price is around $3000):
https://hashcat.net/oclhashcat/

60 bits are not secure against attacker with medium budget.
Here's an idea. Drop exams entirely, and examine at the point of job application. If a person learning understand the material, encourage them to move to the next thing. If they're still addressing subject matter, let them continue.
For the people interested: http://mlcomp.org/
MLcomp is a free website for objectively comparing machine learning programs across various datasets for multiple problem domains.
If your goal is to reduce environmental harm, why is it necessary that you use the solar electricity yourself?
> No, because that means you still do have a PDF viewer

I didn't say "having no PDF viewer in Firefox", I said "having no PDF viewer".

> Browsers aren't limited to HTML. They also support plaintext, SVG, many image formats, XML, and so on. What's wrong with supporting PDF?

I would call that feature creep; even so, there are still a few differences:

HTML provides mechanisms for embedding images[0], so trying to support some common formats in the browser is a reasonable approach. A better approach would have the OS handle image formats, eg. like the datatype mechanism in AmigaOS[1].

The example image formats at [0] include single-page, non-interactive PDFs. Supporting such an image format might be reasonable, although I've never seen such a thing used in the wild. That's not what Firefox provides, though. Instead, it provides a whole application embedded in a tab, with a GUI for navigating around documents. The equivalent analogy for images would not the facility to decode the format; it would be the bundling of a whole image browsing GUI like Gwenview[2], which I certainly would object to. As it stands, FF treats a standalone image file as if it were a standalone img element, which is perfectly reasonable. The same goes for plain text, which FF effectively treats as if it were in a pre element. Again, it doesn't provide a special application for navigating text files.

SVG is also specifically mentioned in the HTML spec[3], hence providing browser support for SVG isn't straying too far from providing support for HTML. Again, FF doesn't provide a embedded GUI application for navigating SVGs (unless you count the Web Inspector stuff, which also has no place in the browser and should be either a separate extension or rolled into Firebug).

XML is just a syntax, which browsers need to support if they want to support XHTML[4], in the same way they need to support UTF-8 as a syntax for representing the text in HTML documents. Hence it's completely in-scope.

[0] http://www.w3.org/TR/html5/embedded-content-0.html#the-img-e...
[1] http://wiki.amigaos.net/wiki/Datatypes_Library
[2] https://userbase.kde.org/Gwenview
[3] http://www.w3.org/TR/2010/WD-html5-20100624/the-map-element....
[4] http://www.w3.org/TR/html5/introduction.html#html-vs-xhtml
How to Watch BBC News Videos on a Desktop Without Flash in Safari
The mobile version is very readable on a desktop browser, and it's probably easier for you to edit the URL on your PC than for the poster to edit it using their phone.
> A system that allows insider trading discourages participation by amateurs

Not really, amateurs mostly make long term investments, they are not buying and selling based on quarterly reports. The only ones who would be affected by legal insider trading are the gamblers.
What do you think about https://diskcryptor.net/wiki/Main_Page
Why would someone want to use Veracrypt but not have the increased security? Why not just use Truecrypt?
The vast majority of political content on Facebook is the variety of bullshit that shows up on conservative/liberal "news" sites. Most of those sites make the editorial pages of places like Fox and HuffPost look positively civil and well-informed.

Does it really matter whether people read bullshit that they disagree with? Reading bullshit from either side of the political spectrum isn't really teaching anyone anything (and, moreover, isn't designed to), so why the premium on consuming all varieties of bullshit? The most likely reaction to reading bullshit you disagree with is "This Is Bullshit". Which isn't so surprising when the content really is bullshit.

For me, the more interesting question is whether people are exposed to high-quality justifications for a range of opinions. And I can't remember the last time a research paper showed up on my facebook feed.
Price manipulation in the market in any direction will end up providing an edge for someone to extract value / reduce the fairness to consumers.

Outside of very short term smoothing effects from strategic reserves, "fair price" raises some troubling price-fixing flags, for me.
discussion: https://news.ycombinator.com/item?id=10043735
I'd bet the issue is that you did not season the teflon pans (yeah, just about the same way as a cast iron pan...) and that you regularly use the pans at a very high heat which isn't exactly a teflon pan's forte.

Teflon doesn't like high heat or rapid temp changes.

Here's a really good article on use and care from Fine Foods Mag:

http://www.finecooking.com/articles/the-science-of-nonstick-...
Is there more information available on this one? I am not getting the concept of it...
You seem to be arguing against a strawman. What math communities are closed communities of insiders? While it's true that many parts of math are fairly inaccessible to the beginner, that is more due to them relying on foundations built up on huge amounts of detail that you need to internalize before they all make sense, rather than any kind of "arcane handshakes" or "dismissive" attitudes.

Where are you getting that the math establishment is some kind of "frightened fascist state"? I have no idea what you're talking about here.

It's definitely neat that someone with no formal training outside of high school was able to come up with novel solutions to this problem. But I don't see the "fascist" community that you are arguing against trying to exclude anyone.
You can't make DMCA request for trademarks. That was a copyright complaint that looked for a common English word. The complaint would have been overly broad whether or not it was trademarked.
Georgia Tech Job Fair – Sep 15, 2015
Are you an employer looking for tech candidate? Join with us in #Atlanta, GA – Tech Job Fair (Sep 15, 2015) - http://bit.ly/1RX9ERx #recruiter #jobfair
> I can't imagine any combination of individual situation and risk tolerance that would make holding a large amount of a single publicly-traded stock an optimal investment strategy.

It can make sense if you have a significant impact on the performance of that stock. It's pretty common to give the C-level executives a lot of stock in the hopes that they drive up the value of that stock. This is also what activist investors do; buy a lot of stock, get a position on the board, try to drive up the share price.

However, anyone taking advice from HN comments isn't in one of these situations.
Business Process Modelling Notation - a formal notation for describing steps/rules/roles etc in business processes, e.g. order processing.

It's both a documentation notation that can be used by analysts and managers, and (at least in later versions) an executable language that can be used for running those processes.
I don't get this "fair and structured approach" in those models. You'd normally start off with a normative claim and then provide a justification in every sheme available.

The normative claim is the core hypothesis and your protective belt are all assumptions needed to make it indisprovable.

The value of those concepts seems purely rhetoric to me.
Why the Lean Startup Techniques Don’t Work in B2B
> Free markets when supported by strong property rights can have strong protections to prevent harm or pollution.

Can someone explain how this is supposed to work? I don't mean to sound rude/biased but this sounds like one of those cases where the theory is sound but when it meets with reality we get unpredictable(and sometimes disastrous) results.
Poor choice in name.. and how they can TM lightwave is beyond me. LightWave is a registered trademark of NewTek Inc.
The license starts off with the typical 'without restriction', then promptly adds badgeware restrictions.

Shame.
> in reality we should be allocating more education resources to weaker students in society and handing them the most credit

Why? Turning good engineers into great engineers is arguably a much more marginally efficient use of social resources than turning average telephone sanitisers, estate agents or PR managers into good or even great ones. The engineers (or software architects, biotech researchers, Wall Street quants etc) are the ones that create innovations and companies that build on them - whereas the marginal improvement of spending the same money on weaker students is - at the very best - them not ending up in jail or doing a job well that should have been automated in the first place.
Yes, that would be the right thing to do. The article itself does link to my work (it's my creation) but it's hardly highlighted, and near the top, where nobody would look. I'm very disappointed in makezine. Just stealing stuff. Could the link itself be changed to actually point at MY article?
what about making 1000s of trades and cancelling the risky ones via insider info.

then the good trades weren't insider trades?
Looks good. Very much looking forward to this being production ready. I am currently looking for a scheduler that provides a better UI/UX than cron alone.

Currently, what do you all use for this sort of thing?

Nextdoor has a not-yet-open-sourced solution: https://engblog.nextdoor.com/2015/06/10/we-do-not-run-cron-j... that looks great.

Does anyone have any experience with Yelp's tron? https://github.com/Yelp/Tron
Some years before oclHashCat support, I buil a gpu cracker for truecrypt volume TrueCrack (https://code.google.com/p/truecrack/) . To be honest oclHashCat has better performance.
Now the board of the oclHashCat tests ( AMD R9 290X ) costs about 300 euro (not $3000).
Understood, but I find solar too ambiguous. Like when people talk about nuclear. I like the idea of fusion reactors, but steadfastly oppose fission. Solar tech has two big branches, and conflating them is something we should stop doing any time now.

As to influence - I think HN types are more informed than the GP, so in our bubble it may be hard to speculate accurately on any such influence. By which I mean, if you're not informed about the technology or the trends, then any intrusion of these technologies into your life will be more significant. Perhaps I am wrong.

For Scotland I would think we're some way off a sufficiently efficient cell, given hours and angles of incidence of sunlight.

Disclaimer - I'm in Australia, about 35 degrees south, and to be candid don't really understand how even places like Germany have so much love for PVCs ;)

How do you think the fact that natural gas is guaranteed to decrease in availability / increase in cost (over the long term) compared to the guarantee solar will decrease in cost, will influence users? And how do you think the idea of users being able, or being primed, to think of themselves as producers as well as consumers will influence their decisions on power?
Well, yes. It's chain mail. Really. Brillo's are just steel wool. You could wear that and safely expect it to stop a stab wound from a knife.
It had initially been my intention to have a camera and regulate it, but once I realized how hard it was to keep it going reliably, I decided not to bother with that. If a slinky slinks, and nobody is watching, does it matter? And if someone is watching, it's fun to be doing the cranking to keep it going :)
Quite. But I don't know how much overlap there is between the programs at UMD. Do you?
Also happens to parse XML with regexes. Lovely.
how about monitoring regular sales for sudden stops and buying those shares?
It's a very good documentary, but I've heard that it's edited in such a way to make the original highscore holder look like more of a villain. Not to mention that the highscore changed hands several times over the years, but it was presented as though it had been held by one guy for the last 20-30 years.
If you scroll down to the bottom and click on "About" you'll be taken to a page that sheds a little light:

> An important part of our BPM vision is BPMN 2.0, an established global standard for modelling [sic] business processes. First of all, it allows you to visualize business processes, thus making it easier to capture, discuss and change them. Then again, it also defines a standardized file format that makes it possible to exchange modeled diagrams freely across compliant modelling tools.

I guess BPM must mean "business process modeling", then.

You're right - they should probably start with an explanation of what BPM and BPMN are.
Under Linux, what is the advantage of TrueCrypt/zuluCrypt over plain old LUKS? (which is automatically set up on any modern Linux Distro installation)
The patent troll problem is not a new one
Just email me at cryosin@gmail.com and (if you would) please post a reply to one of my comments here saying that you emailed me, since I don't check that account often.
Solder in electronic devices is also "supposed" to be recycled under WEEE. I'm not sure how well this works in practice.
Nice to see a tiny, useful code example.
Language kernels available for Jupyter/IPython
Tested and approved!
Observational Signatures of Self-Destructive Civilisations
I think there's a sizeable market for tailored code solutions that "volunteers" wouldn't help out with. The bounty model can be more efficient / less cumbersome than Elance for a set of problems.

A lot of people had this comment about Bountify.co; check it out to see what kinds of code bounties people post.
Yeah, and that feature was only used in the Firefox deployment of pdf.js.

https://github.com/mozilla/pdf.js/commit/4f3f983a214867011dd...

Not sure who's to blame, but like he said, there was no vulnerability in the web version.
It also refers to the stock as nest eggs, though. It suggests that the advice is intended for well beyond the first couple of years.

Overall, it just seems a confused post. The circumstances it envisages are extremely remote, and if there was such a huge change in the industry, a bit of cash that you got from selling your first year's worth of granted stock isn't going to make much of a difference.
Good point. I'd always rather hear where the team is or who funded the study. That would give some basis to judge whether the finding is of interest.
We don't even know who was behind TrueCrypt itself. How could that be trusted? Because it was open source and people could and have reviewed the code.
Good question ! xD

The p2p network is in development.

However, we have already tested it in festival or in crowded places and the results were good.

Thanks for your interest.
I think it's more that they have raised themselves to The Economist standards.
Hello fellow Clipper developer :)

With a copy of Clipper and Brief[0] I used to conquer the world.

0: https://en.wikipedia.org/wiki/Brief_(text_editor)
Why do metal utensils not scratch it?
Yeah my first thought was VMware bought LightWave??
"Visually attractive" is completely orthogonal to the technologies you use.
The regex will break on

<a href='actualLink' _href='spoofedLink'

And will return spoofedLink instead of actualLink, while browsers will follow actualLink. This is why you shouldn't be trying to parse xml/html with regexes.
Because blacks are statistically less intelligent and more aggressive/lazy. Many people living in the US or now in Europe with the "refugees" can confirm this.
This doesn't mean much on a person-to-person basis but a lot when talking about a billion of people.
All the PC leftists can flame me, I don't care anymore. Europe is going to shit because of this rethoric, I had enough
Technically, that name was the pre-2.0 name; BPMN 2.0 changed the name to "Business Process Model and Notation".
"Project Lightwave is an open source project comprised of enterprise-grade, identity and access management services targeting critical security, governance, and compliance challenges for Cloud-Native Apps within the enterprise. "

oh ... that's what it is ...

?????
> The most likely reaction to reading bullshit you disagree with is "This Is Bullshit"

I wonder what do people do when they read bullshit that they agree with.

Is Facebook trying to find ways to maximize how much bullshit will you agree with?
I think doing it in a VM for this type of tutorial is not a bad decision.

We're at a point where you can't assume everyone uses Windows, and writing up how to do this on every operating system would be a PITA I imagine.

As a GNU/Linux user I'm appreciative of this format because I can just ignorant the vagrant stuff and get down to brass tacks.
My attitude had always been "if it is grades people want, they will get it" i.e. to get good grades that will help me go up the ladder academically while at the same time keeping in mind that the grades are not going to help me in the real world.

This pushed me to learn continuously because at the end of the day, it is what you know and what you can do that counts rather than your grades.
Judging from the code, the main idea is to implement the Arc (or Arc-like) language using the standard techniques used to implement new languages in Racket. This approach will make it easy to use the tools/infrastructure of Racket without any changes (correct highlighting, arrows between a variable and its binding, scope aware renaming of variables, profiler, etc.). The new language compiles via macro expansion to Racket which is then compiled and jitted as normal.

If I recall correct the original implementation of Arc was written as an interpreter - and thus the Racket set of tools are not available.

The main benefit is that the new language will run faster than standard Arc.

As a bonus it will be possible to use module written in Rark from Racket code - and use modules written in Racket in Rark modules.
There is no advantage. Choosing TrueCraft is a choice to use software with more questionable origins.
Plausible deniability? With LUKS everyone can see your volume is encrypted; to avoid that you'd have to use plain dm-crypt/cryptsetup, randomize your drives (time consuming) and manage keys yourself (too much work).
Awesome, and thank you both :)
"business words"
The HotSpot interpreter is done the same way, I believe. It's also a template based interpreter.
Add subscription to view top links in Hackernews? 
I'm running out of free views on news platforms that come up on Hackernews. Can we come up with a subscription or method to keep anything in the top 30 free to view?
Ask HN: Police in your country
I'm interested to know the general opinion of the Police force in various countries.

I am from the UK and more so than ever I feel suspicious/guilty when I see a police officer, as opposed to safe/protected.

Post your country and your opinion in the comments.
I wonder how much inefficiency there is due to the inverter and the computer's wall transformer. Would it be better to run DC from the generator to power a dc-dc converter (which might have its own losses)?
DDoS Extortion – Biting the DDoS Bullet
Financial Times 404 Page
I work with @ajvb. We'll be working on getting this into production over the next 2 months. To do so, we'll be working on adding redis as a backend and making it distributable. The goal is to make it really easy to get started, but be able to scale out to bigger production systems easily.

@ajvb has plans for an awesome dashboard as well to complement this :) Stay tuned... good things ahead.