skysight-inc/HackerNews huggingface dataset:
Corrosion in general terminology is the destructive attack of metal. Metal loss or damage can occur due to chemical & electrochemical reaction, physical erosion or biological attack. Corrosion is always because of chemical reaction. Water corrosiveness is determined by the impurities present in it. Oxygen, dissolved solids, gases and acids in water attack the common construction material.

Major Problems due to Corrosion:-
1) Metal loss (capital loss)
2) System leakage or burst
3) Water / Fluid contamination
4) 4) Poor heat transfer efficiency (power loss)

Corrosion are of various types and differs with application to application. Such as:-

MAJOR TYPES OF BOILER CORROSION
i) Uniform/General Corrosion due to high temperature
ii) Pitting Corrosion due to high temperature and chloride
iii) Galvanic Corrosion due to multi-metals
iv) Oxidation Corrosion due to oxygen and carbon dioxide
v) Stress Cracking Corrosion due to high pressure and temp.

MAJOR TYPES OF COOLING WATER CORROSION
i) Uniform/General Corrosion due to high temperature
ii) Pitting Corrosion due to high chlorine and bromine
iii) Galvanic Corrosion due to multi-metals
iv) MIC (Microbiologically Induced Corrosion)
v) Erosion Corrosion due to fast flowing fluid with abrasives

MAJOR TYPES OF CLOSED CIRCUIT SYSTEM CORROSION
for Hot/Chilled Water System:-
i) Oxidation Corrosion due to oxygen and air entrapment
ii) MIC (Microbiologically Induced Corrosion)
iii) Erosion Corrosion due to fast flowing fluid with abrasives
for Glycol Brine / Methanol Brine System:-
iv) Pitting and Uniform Corrosion due to formation of acids
for Calcium Chloride and Sodium Chloride Brine System:-
v) Pitting Corrosion due to high chlorine and bromine

Corrosion Inhibitors are chemical compounds that prevent corrosion attack on system metal. Each corrosion inhibitor is uniquely designed for the given application. It is not necessary that any chemical composition will function as an effective corrosion inhibitor in all applications. Chemtex offers a wide range of state-of-art corrosion inhibitors for almost every application.

Chemtex offers a wide range of corrosion inhibitors under its registered trade names of ALSTACOOL, ALSTHERM, PROTODIN, THEODIN for:-
Cooling Water Scale and Corrosion Inhibitor
Boiler Condensate Line Corrosion Inhibitor
Closed Loop Chiller / Hot Water Nitrite Corrosion Inhibitor
Calcium Chloride Or Sodium Chloride Brine Corrosion Inhibitor
Boiler Water pH Booster / Alkalinity Builder
Mono Ethylene Glycol Corrosion Inhibitor
Boiler Catalyzed Oxygen Scavenger
Propylene Glycol Corrosion Inhibitor
Methanol Corrosion Inhibitor Diesel Engine Radiator
Coolant Corrosion Inhibitor
Hydrostatic Testing Corrosion Inhibitor
Zinc Phosphate Cooling Water Treatment
Molybdate Corrosion Inhibitor
Organic Corrosion Inhibitor
Copper Corrosion Inhibitor
http://www.chemtexlimited.com/corrosion-inhibitors.html
>Do you think that when CGI signed the contract they realized the integrator, the government's CMS, plus those
above, HHS and the White House, would be constantly demanding major changes, right into the week before launch???

When the second or third of the changes happens, CGI should have told them "NO, this cannot be done professionally" and hand them their money back.
Google launches DDoS mitigation service
Some parts of the UK Government (principally the Foreign Office) use an OS called Firecrest for their secure systems. As I understand it Firecrest is built on a fork of Windows Vista
I thought Facebook stared as as a hot or not clone for Harvard students.
I can see it already.

In a dystopian future, when the world as we know it is covered in water, one mythical ship traverses the oceans, powered by stratosphere kites or nuclear power. Nobody knows where it's from.

All we know is that many years ago, it became sentient.

And its name is Google.
One question, why people always say that disabling passwords is important. AFAIK, passwords with keys is better than keys only. Now if someone gets the keys they can access the service with those keys without the passwords. Disabling passwords just makes security in one way worse. Think about chip & pin, because you have your credit card, wouldn't it be smart to disable PIN completely? Of course key ring could be encrypted, but that still allows off-line attack against it. If password is queried on-line, you can limit password attempts which you can't do in off-line situation. - Thanks
Poolicz.pl
> Many HTTP proxies only allow traffic through to port 80 and port 443. The benefit of ssh on port 443 is that if the proxy is handed a CONNECT verb,

Thats not how HTTPS works, there is no HTTP proxy for 443. You are in a corporate environment where nothing is let out on port 80, except through their HTTP proxy. However, port 443 is allowed out.

> In fact, this behaviour is what makes HTTPS remain secure when going through an HTTP proxy.

That would be a MITM against https and it doenst work that way.

If you would go over the http proxy to connect to your sshd on port 443, that would be stupid as the proxy would see your connections. Its much easier and better to just connect directly without asking the proxy.
Yeah I agree my last point is weak.
I think a depth-first search would be more useful for a floating data center :).
It sounds like you might enjoy the Matasano Crypto Challenges: http://www.matasano.com/articles/crypto-challenges/
I think that the author is more interested in the design of the encryption algorithm rather than the specifics of the reference implementation provided. So yeah a dodgy prng was used but is there anything wrong otherwise - i.e. something inside the algorithm itself that reduces its efficacy and makes it vulnerable.
The toilet system turning human waste into energy
There is a great book on this topic by Jeff Schmidt called Disciplined Minds: http://www.amazon.com/Disciplined-Minds-Critical-Professiona...

Here's a review: http://www.uow.edu.au/~bmartin/pubs/01BRrt.html
Android issue #34880 still exists on S4
Anything connecting to this replacement sshd would immediately be spotted as fraudulent due to keys.
OMG, This guy must have a titanium Skull
Operating an automobile requires you to have passed a theoretical and practical exam and attended numerous lessons. Bobby-cars[0] are given to kids as young as two-or-so. Which one is preferable to get from A to B?

Of course, you should generally aim to use the tools that suit your needs and capabilities, but preferring a tablet over a proper PC strikes me as rather odd.
Northern China smog closes schools and airport in Harbin
I agree but I think TFA should clarify that it's probably a good idea to run sshd on a non-standard port < 1024.

While other posters are right to point out that server certificate should make sure nobody can truly hijack your sshd there's no point in taking the risk unless for some reason all privileged ports are in use.

Not to mention that ssh's key model is a bit broken since there's not built-in way to distribute the keys/check the keys against an authority like with SSL. Most people just accept the key they're given when they first connect (I know I do).
Did you count up all of the individual processes? Webkit is now finally on par with Chrome in that each tab is it's own running process.
Not really.

It's a similar idea but comparing Google putting it's resources behind a similar idea to something like Sealand is not really a fair comparison.

The outcome could be vastly different.
Mod_python has been dead for so long now that its death has gone from a liability to a potential asset. After this much time not supporting its legacy, it hardly has any legacy left to support, and not having legacy baggage can be exploited as a significant advantage.

I hope that if the author wants to resurrect it, he'll consider creating a new mod_python focused exclusively on the new Python. Position it that way. Make it Python 3.4 or later with no support for anything earlier so that all effort can focus on creating the world's best support for the next generation of Python web apps.

Just a thought.
Several peopls have commented that this is really just CQRS.

The approach I described above has nothing to do with CQRS, in fact it directly contradicts CQRS. The design of features is intended to combine commands and queries. If the controller is restricted to commands and queries then the logic of combining those operations ends up in the controller which is exactly what we need to avoid.
Neither of those causes is so clear-cut. It's not as if tsunamis are unexpected on the Japanese coast, and reactor designs that rely on active safety systems are inherently worrying. Chernobyl was undoubtedly a horrible design, but my understanding was that the proximate cause was human error/idiocy in disbelieving their monitoring systems.
What do you search for generally?
Do you have any or first hard experience or reference to that?
No it isn't. Every server runs SSH, so this is more like there's a field, and you know there's a tank in the field, but you can't see it.

The next thing you do then is take out your standard radar device which scans the field, and pinpoints exactly where the tank is in 3 seconds, and then you aim your tank buster at that spot and fire.
Inside the Johns Hopkins Psilopcybin Studies
Start-up Invited Patients To Write Reviews They May Not Realize Are Public
I keep wondering why there isn't a libredis you can just link into your program without needing to run a server and all that. It sounds very useful, but I'm not sure how hard it would be to develop.
ToffeeScript – CoffeeScript with async syntax and some additional features
Ask PG: Supporting a startup with an idea you dislike
PG has stated that he was initially skeptical about the Airbnb idea. What is YC's approach to startups with seemingly bad ideas? Do you guys encourage them to pivot early on? Hope they fail quickly and learn from their mistakes? Or guide them as best you can and see if they prove you wrong?
That's not entirely true. HK Island itself & Kowloon were ceded to the British. The new territories were "leased".
Hence my use of the word "legitimate".

I'd like to think that even those who think that it's fine for the state to spy on everyone on the miniscule chance that they might be a terrorist, and even those who think that it's OK to spy on everyone just in case they are planning to commit a crime, would agree that the state shouldn't be spy on people for the purposes of commercial advantage.

And what better way to encourage another country to trust you enough to buy military equipment from you than by spying on their government?
Start-up That Posted 'Burning Sensation' Reviews Will Try To Prevent A Repeat
In my experience, cynical bad students are usually douche bags that think they are too good for the world and that university is just a bunch of crap. A small ammount of them is really intelligent. The most part of it are people who think too highly of themselves.

Really, I couldn't disagree more that doing assignments, reading books and studying end up "closing" one's mind. From my point of view, there's no such thing as "useless knowledge". Granted that you don't learn everything you need to be successful in college, but IMO college is not there to make you successful and give you heaps and piles of money. That is not the point.

One thing got me thinking: If you really don't respect the university "system" that munch, why devoting your life to it?
The 'good' student belives that the signaling mechanism and the understanding of the material is the same thing, they're identical. For those students nothing exists beyond (the signals of) good marks. So in a way they don't really game.
> I have a blog (no I'm not telling you the address, I like to post anonymously!), it gets about 300-500 hits a day, I'm 299,749th on alexa btw.

For the sake of comparison with the original commenter, I have a small site that gets about 1000 uniques a day and it's 3,200,xxx on Alexa.
And they're both oh so successful, right?

Sure, Wikipedia isn't perfect. But I would question any method of evaluation that ends up preferring Citizendium to it.
I sweetly remember losing a few days to getting mod_python working within cygwin.
As lovely as python is I never work with the language anymore.
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Or you could just shift the processes to a newly commissioned, and therefore cheaper per cpu/ram/storage per dollar!
You use a VPN and then connect to SSH
You're clearly missing the boat by a mile here. The skill of developing software is transferable to different languages. Choosing a language for its skill availability is saying that you're too lazy to hire developers competent enough to learn a new language in a short space of time. If you're hiring people who can/will only write code in $language then there's something wrong with your hiring policy, or there'd be no reason for multiple languages to exist.

Also you're flat out wrong about solving the same problems in different languages. It may be possible to solve all problems in Java or Ruby, but it is not possible to solve them in the same way - or more specifically the best, most economical or most maintainable way.

To bring skill into the equation means no one should ever have written anything in Erlang because few people could write Erlang - but people do, because competent software engineers can learn Erlang.
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Thank you michal for the valuable replay :)
As a practicing (bio)chemist, I am usually somewhat cynical about philosophy professors, but what this guy says is spot on. Perhaps this is a self-serving agreement, since I was definitely one of these "good bad students".

In my experience, yes, including your minor clarification on the word 'good', the full description applies equally to chemistry as philosophy (presumably). But then that makes one wonder: Why are we entrusting this system with taxpayer resources to produce science?

Secondly, "But the university doesn't need to exert any pressure, because it's already filtered out the people who would need to be pressured..." What does this mean for controversial topics, like climate science, where political decisions are made based on 'consensus'?

"But the climate science community doesn't need to exert any pressure to conform to the accepted model, because it's already filtered out the people who would need to be pressured to accept it"?

Equally valid, to replace "climate science" with "cancer research", eg.
Thomas J Miller's commencement speech at IIT Roorkee
noooo it ate my references:

1 http://canta.ucsd.edu/~kmowery/quelsolaar/crypto_test.c

2 http://canta.ucsd.edu/~kmowery/quelsolaar/keystreams.tar.gz
First line of each file is the key generated by rand(),
All other lines are the keystream (encryption of 00 data)

3 http://canta.ucsd.edu/~kmowery/quelsolaar/keystreams.py
Note that you might have to change to using os.walk to find files; I'm too sleepy...
Maybe, if no one can find a glaring problem with it. I think using in in a game would be a good place to test it since the world doesn't fall over if it is broken.
Adverse possession may be used to force an easement on the grounds that the access road was itself de-facto public. If not an easement maybe forced in any case.
According to his description, his "good" students are sycophants, and no one likes those.
Chemist here, just musing @ breakfast, so I am not backing any of that stuff with literature research.

I understand you would like to have a permanent cooling effect. Unfortunatly, materials that undergo conformational/phase transition processes do not require a permanent feed of thermal energy e.g.

A + dT --> A' conversion with heating
A' -> A + dT fall back to original state with cooldown

with dT temperature difference (thermal energy)
and A and A' the respective states of the material.

As such you would need a material that uses the thermal energy for some other effect e.g. radiation of light, permanent conformational movement creation of electric potential etc. The trouble I see here is that the effiency of energy conversion is fairly low with the current polymers. And the price tag.

Ok, here is a crazy idea, but not sure if it is not impractical or even stupid (; . Maybe use of superadsorbing polymers with a specific thermoresponsive behaviour somewhere around the working temperature of the athlete would give you a higher cooling effect. Once the athlete heats up, the polymer becomes more hydrophilic, allowing for more sweat to enter the fabric. Hopefully, the wet fabric would have a better thermal energy flow than the dry fabric. Basically, you make a supersoaking sweatshirt. But then again, maybe you just use a hydrophilic fabric?
The problem with StackExchange is that it's turned into the Eve Online of technology forums. It's fun for the few people who managed to get in early or got lucky and asked a question or posted an answer with lots of upvotes. And, simultaneously, it has a forbidding learning curve for everyone else.

I was involved in StackOverflow when it was still fairly young (before the whole StackExchange concept had taken off). I asked questions, I answered questions, I got up to ~1k points and then I stopped going for a while. When I returned, I felt distinctly unwelcome. The social mores had shifted to such a degree, I felt like I was coming in as a new user rather than one with some experience at the site. The experience was very off-putting, and I consider a large part of the reason why I haven't made any contributions to StackOverflow in a long while.
Well, if they would provide an actual implementation rather than a reference implementation, then I would break it. Breaking cryptography often depends on breaking implementations, not breaking the underlying theory. That's why AES-CTR is theoretically secure but so deviously hard to actually implement.
Ireland may have high personal TAX's like a very high VAT level etc, on the other hand the company TAX aspect is rather enticing for many large companies and with that it is very much a case of robbing people to pay companies to pay people. So in effect Ireland is a bit unbalanced and sadly it will take a while to get that balance back.

Yes you can blame the goverment, if say people had no TAX and companies had a silly high TAX would the people speak up for the companies, nope and who would blame them. Now companies in Ireland will just brow beat goverments into keeping things sweet with them TAX wise or they will go emo and pull out the country/cut jobs.

As for goverment staff working to rule, well they don't get performance pay rises, many don't even get pay rises these days and in effect getting pay cuts every day the cost of food and other indirect TAX's go up. Customer service wise they are not paid enough to care and have no motivation to engage that avenue. You do get the good one, usualy new to the job and still not had the life sucked out of them, sad is it not.

So in short yes you can stick it too the man but in effect your only sticking it to yourself and the only winners will be the share holders, who are innocent money investors who don't even know you and may well be part of your pension, if you have a private one.

Company TAX is a fine balance, Russia lower there high TAX rate and got more income from it, Ireland lowered there's way too low and inticed many companies to setup there and now they are somewhat peer preasured by the monster they created into not doing any changes fast and drastic.

Still perk there is plenty of cheap housing that with the lifetime of a mortgage the World population will do it's best in increasing and with that drive up the costs even more.
VPN into it?
They have huge advertising campaign going on here in India with top bollywood stars. I would still be surprised if they were doing good here. Why is there still a market for internet messengers? There are so many of them already. it's like image sharing apps.
The problem is that Wikipedia's selection process for Featured Articles and Good Articles doesn't take into account the importance of the article. So you have lots of excellently written, thoroughly researched articles... about South Park seasons: https://en.wikipedia.org/wiki/South_Park_(season_13)
NY US Attorney: $28M in bitcoins snatched
Your premise is wrong – while the security of encryption, for example, is as weak as the weakest out of algorithm, key, random numbers used etc., the security of a system solely attacked via the SSH daemon is the sum of each layer of defence (or at least the strongest of these layers); that is, an attacker has to pierce each layer individually and successfully attacking one of them (e.g. finding the SSH port or the correct port knocking sequence) is not enough to render the whole defence void.
A Tour of a Whole Country That Has 'Transformed Itself for Cycling'
I still don't see any reason to change the port. Use only key auth. Problem solved.
We only have a tiny amount amount of "old growth" forests in Scotland - about 1% of land area with a total of almost 18% being forested, the difference being the "tree farms" (not what they are called here, but that's really what they are).

http://www.snh.gov.uk/land-and-sea/managing-the-land/forestr...

There are groups trying to restore the ancient Caledonian Forest:

http://www.treesforlife.org.uk/

http://en.wikipedia.org/wiki/Caledonian_Forest

There are also attempts to restore wildlife as well - the White Tailed Sea Eagle has been re-introduced as well as beavers in one location. Some people even want to have wolves and lynxes brought back...
Ericsson "redefines" small cells with Radio Dot
Thanks for your valuable information. I'm glad I deleted my Linkedin profile one month ago.
The structural problem he mentioned at the end is this: students are not customers. Had they been customers, who could instantly stop paying this professor because they think he's boring and doesn't deliver, you'd see a completely different picture. It wouldn't be about grades and diplomas anymore. It would be about acquiring knowledge and skills that students can later apply. If they decide this professor cannot teach them, for whatever reason, they would stop paying. If they decide it takes too long - they would stop paying and find a better path or drop it.

What you currently have is a system in which professors feel superior for some reason. And they are not punished financially if some students fail. So the best way to incentivize this system in which professors actually serve their students is to apply market mechanisms to teaching.
Nope. This was tried with Bitcoin back in the day. JavaScript is far too slow, and a spammer could just blast out thousands of times the work with a single CPU running something native. Mobile users would suffer greatly too.
I have been developing for the web since 2002, but I have only been doing Python for the last few years, the "mod_python is dead" phase. In fact with the first site that I launched in python, I was starting to setup a beta environment with mod_python when my boss told me not to use it. Looking forward to reading up on the new release.
http://opalang.org/ has something like that. I do find it a lot easier than all other proposed solutions so far. Wish a language like Clojure(script) would have something like this for general use with async processes/callbacks (in Java/.NET running threads, in JS this).
It can work like this - see: http://wiki.squid-cache.org/Features/HTTPS#CONNECT_tunnel
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