skysight-inc/HackerNews huggingface dataset:
Let's look at chemical storage with hydrocarbons in the mix, allowing some as-yet non-commercial (air-metal & combined cycle home generators) to make good food for speculation.

A consumer to operate a small gas turbine and store their energy in the form of hydrocarbons. If this is to be sensible, then 43MJ/kg would have to be enough, because that's what they're going to get with kerosene/jet fuel.

Now let's consider lithium. The problem with metal-air batteries has mostly been poisoning by unwanted gases. Let's assume for a moment that a membrane material is developed that only allows high purity oxygen through, but suffers low throughput. This is no problem for our off-grid solution because we're talking about large storage relative to power, similar to some flow battery applications. Using some method of specific ion or biological style solution, such a membrane is not implausible.

Lithium-air weighs in at 40MJ/kg specific energy. How much does it cost? Given that a metal-air battery uses lithium oxide, the lithium carbonate and lithium hydroxide prices are not quite valid guides, but the price of $7/kg is obtainable for the carbonate of "battery grade." If the pure oxide can be the material used in manufacture, then possibly the $7 value is in the ballpark.

Jet-A is $0.45 per kilogram. 1.41 $/gal / 3.78541 l/gal / 0.820 kg/l

Higher efficiency must be allowed because even with combined cycle at high latitudes where it's cold, we're looking at 90% round-trip for a battery vs ~75% for our Brayton cycle + home heating.

There are external costs to a large tank of kerosene and a pile of lithium carbonate. One requires a gas turbine and the other requires a battery & significant manufacturing. Excepting those two things, we're left with a roughly 7:1 factor of cost for the raw material, so a seven year payoff it is.

Lithium might not be the cheapest rechargeable precursor. It might be great for EV's (high power output is a requirement) and maybe something else will show up as the cheapest energy storage without requiring off-grid people to rely on ARES gravity trains.

Perovskites (new paper just suggested that hot-carrier phonons can be used to raise theoretical efficiency to 66%) throw yet another wrinkle into solar. Both energy storage and generation could become quite a bit cheaper.

All hypothetical, yes, but my napkin does tell me not to rule out off-grid, not that I'm sympathetic to off-grid, anti-social Ayn Rand acolytes =D Whatever matters for off-grid matters for a ton of settings, such as places where there is no grid still. It's tough to say definitively that a straight-renewable energy source won't become cost-competitive even in grid areas of high latitude within the decade.

Source on Jet A specific heat:
http://www.exxonmobil.com/AviationGlobal/Files/WorldJetFuelS...

Source on Lithum Air theoretical specific energy:
https://en.wikipedia.org/wiki/Lithium%E2%80%93air_battery

Jet A price:
http://www.indexmundi.com/commodities/?commodity=jet-fuel

Lithium Carbonate Price (ev grade):
http://www.globalstrategicmetalsnl.com/_content/documents/40...
No, not at all. I'd like to know where they got those figures! In NSW, Australia's largest state, IPART (the Independent Pricing and Regulatory Tribunal) who until about a year ago set electricity prices, gives different figures for 2010:

"Households with 1-2 residents use about 1,400 kWh of electricity per quarter

Households with 3-4 residents use about 2,100 kWh of electricity per quarter, and

Households with 5 or more residents use at least 2,700 kWh of electricity per quarter."

http://www.ipart.nsw.gov.au/Home/For_Consumers/Compare_Energ...

Edit: I must be tired. My calculations are way off. Sorry about that.
You could just set MAKEFLAGS=-j<N> in the environment. I have this in my .bash_profile:

export MAKEFLAGS=-j$((`nproc` + 1))
Great. However...

Your name is way too close to Tor Messenger which last release a few days ago shows very good progress.

Why this matters? Your project states that it's not secure. Their project aims at being secure. One person wanting security may inadvertently install your and end up being in a less secure state as what he would get with Tor Messenger.

Changing names following name space collision is no big deal... At the beginning ;) When your name is well known it's a total different matter.
Slick Write – Proofread online – Check your grammar and more
So now we need to create a web service to send multiple requests and auto-cancel when the first one is accepted. The chance of auto-accepting within the minutes needed to respond should be small, unless you sent to the same host multiple requests.
5 Things Highly Effective Employers Do
How does this compare to ActiveAdmin?
I've been using this method [1] successfully for several months now. Instead of cracking the shell and then peeling under water, you take both steps at the same time by cracking the shell in the water!

[1] https://www.youtube.com/watch?v=FkWISKfgqZ0
Can anyone with relevant knowledge in this field comment on this? Are the treatments described in the article effective?

The way it is described sounds too good to be true.
Don't forget to add a spoonful of salt into a water -- this makes eggs cracking less often.
At least for me the problem is that leap seconds are unpredictable. How many seconds are there until January 1st 2020? We don't know, nobody knows. You can only know for sure in 2019. That's bad, that's really bad. Performing internal calculations in TAI doesn't help if conversion between UTC and TAI is undefined for dates more than a year in the future.

Another way to fix the issue would be to define predictable leap seconds, just like leap years are predictable.

But I'd like to see them go. Nobody looks up to the sky and says "the sun is getting later and later". Half of the year most countries are far from solar time anyhow.

Do I care where the sun is relative to some arbitrary line in England? No.
There can be another reason why COBOL hasn't been replaced. No manager wants to be responsible if the new system has a problem/bug, especially if it was in a case where the old system worked fine.
How much of that is limited by the C core as well? Waiting for that to be fixed seems like another level of infinity than guile-emacs.
The big baby experiment
My personal experience is that customizable is a great thing, however, it might turn out to be an echo chamber if over customized. Too many familiar contents, need more surprises.

also need a "hide" button. The most frequently used button in reddit was mark a thread as seen by hide it, don't wanna see it again.
I have no thoughts on Rene Girard, having never heard of him before.

Still, just as a matter of civility, perhaps calling him a charlatan and criticizing his work is something that we shouldn't do on a thread announcing his death. There are better places for this.
I use https://github.com/nuex/t, which generates ledger timelog entries as documented here http://www.ledger-cli.org/2.6/ledger.html#Using-timeclock-to.... I've tracked approx 2000 billable hours using this method over the last couple of years. When I invoice, timelog entries are archived into a separate file, so my active timelog ledger file records unbilled time.
Out of interest, did you replace Stashboard with something else?
As someone who's played the "Let's use Rails Admin, it's quick and easy... <time passes> Oh hell, the client wants to see what in there now? <much more time passes, punctuated by intense pain and misery> OK, maybe just building a custom admin interface from scratch would've been easier" game more times than I'd like to admit, I'm very keen to give this a try.

The "No DSLs" principle is particularly appealing to me.
Not really, we'd just be the poster children of those polar bears on melting icebergs. :/
Very funny and useful.

Seems that the scientific method can and should be applied to nearly everything successfully :o).
You profile doesn't specify your email :)

I'd be glad to get help here, but I think this is just an unsolved problem. Discussed it on google group. I think I understand it relatively well, and even wanted to fix it, therefore I doubt multiple currencies can be handled with the current version of ledger; but would be glad to find a workaround.
Keep in mind that this is a ledger, not a spreadsheet. You record transactions in a text editor. The ledger-cli program is simply a report generator. From the perspective of an "accounting application", what you might think of as the meat of the program is actually the text editor. There are plugins for emacs and vim to do text highlighting and insert dates, etc, but it's basically free form editing.

In a way, it's exactly what you are thinking would be superior: why not use some general purpose tool for data entry and then write some macros for generating reports? It's just using a text editor rather than a spreadsheet.

The text editor is actually quite a bit better suited to this kind of entry than a spreadsheet. Have a look at the examples at the website. Since the journal is also just a text file, you can easily use a version control systems on the data -- this has saved me more times than I care to mention.

So, yes, it really is easier than just about everything else you could imagine. If you are interested in double entry accounting, I highly recommend it.
Florida Public Elementary School Hosts STEM Night Just for Boys
All the time (many times per hour when doing bookkeeping).

But I use git & remote bare repos as a backup & multi-device sync method for nearly everything I do on my systems, so I'm pushing very frequently.
Cropper – jQuery image cropping plugin
Has anyone tried to marry the time tracking in ledger with org-mode in emacs? I haven't looked at the emacs mode for ledger yet, so forgive me if it is in there. I would really like to work in org-mode and somehow end up with ledger output without having to manually move all the data.
> If they think that being fully automated is the main reason why people are interested in them they are mistaken. [Citation Needed]
Both of those books are great, but ISSFLL is Girard at his most brilliant, explaining the role mimetic desire plays in human conflict.
I don't have it installed now, so an example just out of my head: suppose I have 100 USD; I exchange 50 USD to EUR at 1.2 rate. Then I spend 20 EUR on food. Then I exchange remaining EUR to USD at 1.1 rate. Now, if we generate a balance report, do you say it will be balanced?
Well, at least he gets his infos in the news quick.
CCProxy 7.3 Crack, Keygen and Serial Key Free Download
Be careful with statistics: In this experiment, 3000 eggs were boiled, showing a difference of 10% versus 12% cracked eggs with/without pricking before cooking.

Statistically, this does not have _any significance_ at all, though:
https://translate.google.com/translate?sl=auto&tl=en&js=y&pr...
(Sorry, that translation is hilarious).
There's a "webroot" authentication plugin that creates a validation file for use with an existing server, though still a tad bit complex.

https://letsencrypt.readthedocs.org/en/latest/using.html#com...

https://github.com/letsencrypt/letsencrypt/blob/master/letse...
Black Hole Has Major Flare
Emojis in Bug Reports
That would be worse since most likely every single machine will fail - if it's not common no one will think to test or implement it.

And a many-second jump is harder for the computer to handle smoothly, especially if it's a backward jump.
RUB researchers compile the largest astronomical image of all time. 46 gigapixel
Can someone explain why this topic receives so many upvotes?

Is it just a popular topic getting upvoters who vote for popular items or is there something genuinely interesting about this?
I do like knowing when sunset is though. A second or two won't matter, but after some decades all the formulas for calculating sunset time will be wrong.
Political parties heavily targeted activists in the last several elections in my country. It is a very dystopian picture.
From the perspective of large multinational companies, the environment has changed.

Tech and emerging market companies create low margin competition that incumbents can't compete with.

The rate at this happening is higher than ever before and has recently sort of exploded.
I eat a lot of boiled eggs, and this is what I've been using for the past 6 months:

Nordic Ware Microwave Egg Boiler https://www.amazon.com/dp/B0007M2BN0

Works surprisingly well, consistent, etc. it basically steams them.
Yes we should, but it has nothing to do with this. DST is a local thing (state/province level), leap seconds are worldwide.
Perhaps it isn't now but this whole thread is mostly referring to the start of a company in which case everything is a small business.

Basecamp with 50 people is still small to me, I'd say companies need at least 100 people before they can be called mid-size.

Trying new things means the other spun-out companies are startups. Basecamp itself is nothing new, just different software solving the same problem as hundreds of other project management and collaboration tools.
It's a true & bit of a bummer fact: most homes are incredibly energy inefficient. Especially when it comes to heating.

But people must change & figure out how to do it. (hint: 50 cent per watt solar and cheaper.. you just may be able to heat with solar. storing energy as heat... you don't need a battery. You need concrete.)

Evolve or die.

BTW, lithium batteries do not off gas hydrogen (like lead acid batteries do). Therefore, you just keep your batteries inside with you. They'll work just as efficiently and any of their 5% inefficiency will become heat.
That's like saying we shouldn't talk about gun control on the day of a mass shooting: when then?

The thread "announcing" his death points to an article comparing him to Voltaire and Racine. Please.

What really upsets me about Girard is his arrogance and how well it worked. It takes some balls to title a book "things hidden since the creation of the world" (meaning, nobody before me was able to think clearly). And it takes some admirable luck to have people fall for it.
Stringifile.js – Require file content wrapped in xml tags
I think my comment was extremely fair at the time when I wrote it. I am glad to see that more intelligent debate is going on now, but please go see the nonsense written at the bottom of the page and judge by yourself. I'd rather not point specific examples.

And thanks for your compliments too.
Bah. Use cases are specific yet talked about as if they're universal.

Let's look at error. If you're running a web server, or something like a web server, then when a request errors you don't want it to blow up the whole server. You just want to log that error. Yet you may not care about the many many other normal requests happening at the info level (and debug would be even more info underneath). Thus now error is actually useful both in terms of monitoring but also separating out from other requests that went through just fine.

People say exceptions should blow up the world -- that's great when you're debugging, but users don't typically want to keep reusing an app that crashes. There are more graceful ways to degrade.
The client has a "manual" mode as you describe, but it's practically undocumented right now. It lets you create the certificate on any machine and leaves serving the verification file up to you.

I do hope they polish it up or at least properly document it for the launch.
Indeed, that's a lot of money to spend for no benefit. If you let people pay to adjust search order it's always a conflict of interest, though. It's just that in this case, they preferred the little customer (who pays for the bookings) instead of the big customer.
Thoughtbot really has some smart people who make great things. I've really liked both Hound and Formkeep (not to mention their plethora of open source projects like Suspenders, Liftoff, Paperclip, Factory Girl and more).

I always get the feeling they eat their own dog food and really like their contributions to the ruby community. Great work guys - looking forward to trying this out in a project!
The problem with tools which try to understand the code themselves is that there is a mismatch between what is build by for example a Makefile and what the editor sees.
We are building embedded software using a huge pile of Makefiles and using cross compilers using a lot of product dependent #defines. What is required for us is: find declaration/implementation, find usages of function, find applicable defines, have no false positives for functions which are behind compile options and are #ifdeffed out.
The only IDE which works correctly is eclipse CDT. I think it works by scanning the make processes' output for defines. Are there other good tools which work ok for my scenario ?
How to secure your custom domain website with a free SSL cert from StartSSL
I would gladly pay 20% markup to not have to go into a brick and mortar store for pretty much all products I buy.
Monster Products CEO Noel Lee Is Beefing with Dr Dre and Beats
Has anyone heard of OfferUp? I only did recently and surprised that can raise nearly $100mil
Between 4/5 the host pre-approves you for booking (without you requesting to book) that should be the case.

Have been using AirBnB for stays since 2012 and hosting since 2014. Never had an un-requested booking.

+ Host does not have a way to charge you
What do you mean 'it will be balanced'? In double entry accounting, every ledger entry needs to balance. You have three entries. Whether they balance depends on how you enter them. What is the specific problem in your example?
During one lifetime, you will see (at the current rate) about 60 leap seconds. Do you really notice if the sunset time is off by one minute?

Note that moving 30 km (or 20 miles) east or west also changes the sunset by one minute.
In terms of part of the solution, ETW[1] is pretty fantastic. It's blindingly fast, strongly typed and rich tooling exists for it (e.g. you can correlate events with performance counters, possibly saving yourself a profiling session). It's not a turn-key logging solution, it's simply a great place to queue your messages to.

We don't [yet] use it as part of our logging framework, but recently I used it in a pretty interesting way. We had to make some changes to how we interact with SQL to handle transient faults on the cloud (specifically SQLAzure). Big risky change. In order to guarantee that we didn't mess anything up I sent events to ETW from our data access layer. A separate process would then listen for those ETW events and resolve the stack trace outside of the primary process (something that ETW will do for you). Each stack frame was then sent to a primary server. This allowed us to do very fast code coverage analysis on QA environments for additional guarantees beyond unit tests.

Without ETW this would have taken me a week instead of day - it's some really exciting tech. I'd love to see something analogous to ETW in Linux; it has made me realize that textual logging is, frankly, unacceptable.

[1]: https://msdn.microsoft.com/en-us/library/ms751538.aspx
I've seen several buses in San Francisco completely decked out in Jet purple.
I think the original article was looking at the proposition of off-grid energy use using purely solar, in which scenario seasonal variations matter

From the article "Even with these rough numbers it’s hard to see how anyone living any distance from the Equator is going to be able to justify the cost of installing enough batteries to go off-grid with a domestic rooftop solar PV installation."
I don't know if you're just ignorant or lack of experience...
Out of interest, what is the individual moral argument--unrelated to environment or functional externalities like that--against procreation?
well nobody apart from people looking for an off-grid lifestyle of course. What I took from the article is that pure solar off-grid is impractical away from equatorial latitudes.
The authors of Google Effects on Memory:
Cognitive Consequences of Having
Information at Our Fingertips 2011 [0] suggest a mechanism. Basically rather than retaining knowledge we retain, essentially, the relevant search parameters. A more compact representation!

The human brain is scary adaptable.

[0]http://scholar.harvard.edu/files/dwegner/files/sparrow_et_al...
I disagree with doing away with the Warning log level. It's very useful for errors that don't negatively impair the function of a program, yet should be captured.

For example, converting a user input to an integer. You can provide safe defaults if the value doesn't convert so it doesn't break the flow. As the developer however, if you see too many warnings with conversion errors then you may want to change the label of the form field, or provide some guidance to make it more clear to the user.
The article author clearly doesn't understand enough physiology (or English grammar, usage, and spelling, for that matter) to be making any scientific conclusions.

For example, his theory that eating only fruits and vegetables starves the cancer of sugar is ludicrous. Dietary glucose and sucrose (half glucose, half fructose) occur naturally only in fruits and vegetables; many fruits are, in fact, quite high in sugar. (The way to starve one's system of sugar is with a ketogenic diet.)

Similarly, his claim that all cancer cells die at a temperature at which all healthy cells are safe (or at oxygenation levels that are safe for all healthy cells) is bogus. Hyperthermia treatments are directed at the tumor and at higher temperatures than he states. BTW, Lance Armstrong's hyperthermia therapy was to treat his testicular cancer, not win the Tour de France.

etc. etc.

That said, I'm all for exploring treatments outside the current Western burn/cut/irradiate paradigm... but beware of utter quackery. US medicine is largely constrained by what is FDA-approved (for better or worse), a constraint overseas providers are free of.

I'll bet the Tijuana clinics mentioned were also big laetrile pushers in the past... or even now.

His paranoia about a primary profit motive to chemo and surgery seems ludicrous -- if a patient can be cured with far cheaper chemicals and methods, why wouldn't the Western doctors use those and charge the patient the same higher rates and make more money?

*Technical note: some organs and tissues NEED glucose; even with no dietary carbohydrate, the body manufactures glucose out of proteins as needed via gluconeogenesis... so the body is never completely sugar-free.
Twitch's Bob Ross Marathon
France now more repressive of boycott calls than Israel
Canon MP980 Driver
Canon MP980 is an All-In-One mini-lab photo printer that can be used for both analogue and digital photographer with bring you the high quality print. It has a sleek design covered with dominant silver color and black lines to make this printer looks more elegant. Just like another multi-function printer it can be used also for scanning and copying.

http://www.masterdriversdownload.com/free-canon-mp980-driver-download/
"600W of energy storage"

Do you mean 600Wh?