Viewing profile — guan

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. https://www.nber.or…

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 ex…

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 f…

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 sam…

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. …

When there’s not too much traffic, Ocean Parkway in Brooklyn also has a green wave.

I tried it, and it appears to be freemium. The basic level is WARP, and then there’s WARP+ which costs $4.99/month. The difference isn’t entirely clear though. It says that WARP+ w…

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 discrimina…

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 int…

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 percenta…

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 su…

It’s pretty common. If you pay a lot of household bills—for electricity, water, insurance, rent, tuition, etc.—many of those will accept credit cards, but most will also allow ACH …

Network address, gateway, one usable IP address, broadcast address :-)

Due to the size of the relevant column in the fixed-width format files used for ACH, there is a limit of $99,999,999.99 for ACH transactions.

So it turns out that if you turn the volume all the way down to zero, it pauses playback. And if you turn it up again, it starts playing. I didn’t test whether navigation messages …

Thanks; I’ll double-check but I think pushing the volume button turns the whole infotainment system off. Which does pause whatever’s playing, but also turns off navigation or whate…

Did the car you rented have a Play/Pause button on the steering wheel? That’s what I am missing the most: being able to quickly pause (and later resume) whatever I’m listening to t…

Buying something for $100 using eBay’s credit card service does technically imply paying $100 to eBay, but eBay would not recognize $100 in revenue. eBay’s revenue from that transa…

It would cause some practical difficulties if the corporation owned all its shares. For example, in the case of a Delaware corporation, shares owned by the corporation itself can’t…

The traditional rule against perpetuities is the life of someone alive when the trust is created plus 21 years. That is also the rule in New York, in section 9-1.1 of the Estates, …

Mærsk’s Triple E-class, some of the largest container ships in the world, do use the Suez Canal to transport goods between Europe and Asia, but are slower than previous classes, wi…

Presumably all residents, including those from other EU/EEA countries, would be allowed to buy. I believe discrimination against nonresidents is allowed under EU law in many contex…

I think they are implying that it could be fraud, but since there are birth certificates available, you couldn’t commit this fraud by simply making up a birth date. So a fraudulent…

Many of the major services also allow the conference do dial out to a regular phone number. Depending on the relationship with the client, it might be possible to just ask them to …