wcoenen

69 ms·

811.
by wcoenen 7y ago
> What do I need to watch to get out of this inappropriate category Nothing, just tap the three dots on wrongly recommended videos and then "not interested" or "don't recommend channel". The recommendation algori
812.
by wcoenen 7y ago
> The Chinese satellite was designed and built at a cost of $8 million, with China paying around $6 million of the capsule’s price It is odd that the article mentions these details about the satellite cost, but then completely ignores
813.
by wcoenen 7y ago
Would engineering be able to keep up with something like Meltwater Pulse 1A [1], when sea level rose at 50mm/year? Could climate change cause another pulse like that? [1] https://en.wikipedia.org/wiki/Meltwater_pul
814.
by wcoenen 7y ago
> What you should be trying to achieve is a portfolio that earns the exact same return every single year Perhaps this is a dumb question, but wouldn't that mean that you end up with a 100% cash portfolio? After all, that portfolio
815.
by wcoenen 7y ago
Electrolysis may be easy, but pressurizing the hydrogen to 700 bar is not. That would probably require a relatively bulky and noisy multistage compressor system.
816.
by wcoenen 7y ago
Since the borrowers could sell the collateral instead, technically they aren't depending on these loans and they could stop using the repo market. However, they would then 1) lose the yield on the bonds and 2) instead need to keep larg
817.
by wcoenen 7y ago
That definition doesn't seem right. The repo rate is just the rate paid on repurchase agreements, a type of risk free, short term loan where collateral is exchanged for cash, then exchanged back again. Central banks shouldn't be i
818.
by wcoenen 7y ago
This system already exists and is called the IBAN (although it has only two checksum digits, mod 97). I thought it was used for all bank transfers in the EU now, but apparently the old system is still in use in the UK. https://ww
819.
by wcoenen 7y ago
Tesla itself has previously claimed that its vehicles had fewer fires, per miles travelled, than other vehicles in 2012-2018: one per 170 million miles for Tesla, vs one per 19 million miles for all. https://www.tesla.com/nl
820.
by wcoenen 7y ago
At least here in Belgium, I do not remember there being consistent and uniform unit pricing before the directive was issued in 1998. From my point of view, the directive appears to have improved things so I would not characterize it as &quo
821.
by wcoenen 7y ago
In the EU, the price indication directive helps consumers to deal with this. In addition to the item price, unit prices (e.g. per kilogram or per liter of product) must also be indicated.
822.
by wcoenen 7y ago
> Can it be a radio that fits in ones pocket No, Starlink will use a phased array antenna that has been described as being the size of a pizza box. Iridium GO! devices are small and already exist, but you'll pay exorbitant prices fo
823.
by wcoenen 7y ago
GDP is comparable to the concept of revenue for a company, which is not the same as profit/loss. Revenue cannot be negative unless the company is charging negative prices. I think what you meant is that Berlin has a net inflow of tax m
824.
by wcoenen 7y ago
> ABI compatibility is also important. For example, the Linux kernel takes it very seriously The linux kernel does not provide a stable ABI for drivers. Drivers that aren't in the kernel source tree will eventually break. https:&
825.
by wcoenen 7y ago
Nuclear warheads are not designed to be detonated at ground level. The optimum burst height for maximum damage (presumably not to bunkers, but to other structures) goes up with the bomb yield. For megaton yields that altitude will be severa
826.
by wcoenen 7y ago
Iridium focuses on applications that require low power use and a small antenna, but don't need much bandwidth. (Phones, telemetry, emergency text messages, ...) So indeed, they didn't want to make an internet backbone.
827.
by wcoenen 7y ago
The article talks about signals and proteins that activate genes, but it doesn't say what actual response of the plant is being implemented by those genes. I thought maybe this was an omission, but the paper doesn't seem to talk a
828.
by wcoenen 7y ago
That's because N-body physics implies unstable orbits. For the planet scale objects, the game designers would have to make sure that the orbits don't go crazy (over times that can be explored at maximum time warp). But then if the
829.
by wcoenen 7y ago
> When was a Bloomberg subscription ever free? I don't think anyone is claiming that a full Bloomberg news subscription should be free. He's talking about the practice of popping up a paywall after baiting the reader with a few
830.
by wcoenen 7y ago
Things can happen very fast. The fed printed $128B in just two days to address the repo market crisis. https://markets.businessinsider.com/news/stocks/fed-repo-inj... Granted, overnight loans are not permanent inj
831.
by wcoenen 7y ago
Section 10 of the original white paper is about privacy. It imagined bitcoin transactions being public, but still about as private as stock trading transactions that are published on a ticker tape. http://bitcoin.org/bitcoin
832.
by wcoenen 7y ago
GDP growth is typically given as real growth. From investopedia: " Most of the individual data sets will also be given in real terms, meaning that the data is adjusted for price changes, and is, therefore, net of inflation. " htt
833.
by wcoenen 7y ago
No. That would allow objects to gain energy by quantum tunneling, which (as far as I know) quantum mechanics doesn't allow.
834.
by wcoenen 7y ago
The Fischer-Tropsch process is about 50% efficient. (This is starting from biomass, it will be worse starting with air and extracting CO2, which is hard because less than 0.05% of air is CO2) https://www.sciencedirect.com/sc
835.
by wcoenen 7y ago
I signed up to try it, but it really doesn't seem to be what I'm looking for. The first problem is that they seem to have decided based on my IP that I only want to read news in the Dutch language. No setting to change that. They
836.
by wcoenen 7y ago
> it's just that I don't want to add another 10-20EUR subscription for the 1/2 articles I'd want to skim I've also been thinking about this, with all the paywalls I've been running into. I don't mind pa
837.
How to build your own Hedge Fund strategy with risk parity portfolios(towardsdatascience.com)
1 points by wcoenen 7y ago|0 comments
838.
by wcoenen 7y ago
Your "tldr" is roughly 100 words, same as the rest of your comment.
839.
by wcoenen 7y ago
Eventually excess algae would have to be removed. If you then just let them rot or convert them into food which is then eaten (both being the slow biological equivalent to burning), then the captured CO2 returns to the atmosphere.
840.
by wcoenen 7y ago
I tried to use ishares MSCI ACWI as the benchmark, but apparently that only goes back to 2009. (Not that the paper is trying to do something like that. It is more about the performance problems of individual stocks. It is not claiming that

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