If you look at the last two pages of this classic paper (admittedly almost 20 years old now), you’ll see a list of some names they used in the field experiment.
You could consider the Keyboard FeatherWing. It contains only the screen and keyboard part. You are meant to add a Feather format board that has a microcontroller and Wi-Fi, for example Adafruit’s ESP32 Feather board.
What’s a little frustrating with the Xilinx parts listed on Digi-Key, and to some extent other FPGA vendors, is the lack of any price breaks.
I looked up a random i.MX6 processor from NXP. It’s $32.08 for one of them, and $20.95 per part when you get a reel of 500. If you need a few thousand units made, it’s perfectly reasonable to order parts from Digi-Key. You might be overpaying compared to what a good purchasing person can get you, but it’s fine for a few thousand parts, and quick and easy.
Look up any Xilinx part on Digi-Key, and there’s just a single price break at 1 unit. Even Lattice parts only go up to price breaks of 100.
I am not aware of countries that test completely randomly. But many countries have so-called sentinel surveillance, where 1-5% of family doctors (general practitioners) send in samples to a lab from patients who appear with influenza-like or respiratory symptoms. This is how they monitor the spread of different kinds of influenza strain. In principle, if there’s enough testing capacity and it’s judged worthwhile, this could be expanded to also test these samples for SARS-CoV-2.
This makes it sound like at least one German state has tested for coronavirus as part of their sentinel surveillance, but I’m not sure if that test was completely random:
In the US, the most common ACH debit and credit transfers can be “returned,” which is similar to a chargeback. This is covered by Subpart A of Regulation E of the Federal Reserve. Only “wire transfers” such as Fedwire and SWIFT transfers, which consumers rarely make here, offer final, irrevocable* payments the way many other countries’ normal domestic transfer systems do.
* Meaning they can’t be undone through the payment system. Sometimes it’s possible to sue the recipient or recover the money in other ways.
The French state railway company SNCF has a low-cost service high speed TGV service called Ouigo that also uses stations on the periphery of some cities (while regular TGV goes into central stations), just like low-cost airlines.
Sounds weird. The reason China and japan do is way is to keep the HSR track as straight and short as possible. Bringing a train into a city that isn’t an end point would probably slow it down a lot.
With Gifu-Hashima and other "rural" Shinkansen stations the reason is usually political. For example Gifu Prefecture would not allow the line to pass through the prefecture without a station being built. From Gifu city center it's actually faster to take a train to Nagoya and change to Shinkansen there, especially since every train stops at Nagoya and only a few at Gifu-Hashima.
In the case of Ouigo, I believe it’s in part because the station and track owner charges less to use peripheral stations than for central stations, and in part for price discrimination, so less price-sensitive business travelers and wealthier travelers aren’t tempted to go for the cheaper option.
For land producing minerals, there is a special tax rule called “percentage depletion” available to some taxpayers. With percentage depletion, the owner can deduct a fixed percentage (15%) of gross income every year. This can add up to more than the original amount invested in an oil field.
Normally, the depreciation allowance for capital investment over a period of years can only add up to the amount originally invested.
There is a neighborhood community ISP in Copenhagen called Bryggenet. They used to make it very clear how much overprovisioning was going on, and have two different options each subscriber could pick with different levels of overprovisioning. I understand from some people who were involved that it caused some initial confusion and complaints, especially when comparing to advertised speeds of commercial offerings, but people understood eventually.
They now seem to have moved away from that model, based on a quick look at their website.
https://www.nber.org/system/files/working_papers/w9873/w9873...