i_am_proteus
Joined 8 years ago
Joined 8 years ago
The place to look is existing codes for ventilation. Exempli gratia: https://dos.ny.gov/system/files/documents/2020/09/2020-mcnys... (see PDF page 46). Regulations to enforce outside air being brought into human spaces already exist.
I have been in some office buildings in United States which had CO2 monitors in each meeting room, and the ventilation would engage to control CO2 below a set level. We would entertain ourselves by exhausting our lungs onto the sensors to trigger the ventilation system.
All wires are antennas...
- Quick cell phone photograph of the page, phone placed in lap
- OCR + AI = answer
- Glance down, copy
- Repeat
For a more surreptitious variant, use the front-facing camera against the bottom of the page, then flip the page. Cell phone can remain in lap.
For exams in most subjects, the cellular phone is held in the lap. The student needs only briefly expose the exam page to the camera of the phone: immediate photograph of the page, ingestion of the page by an artificial intelligence, and then: the student flips the page to view the side exposed to the camera, and glances down to see the answer on the telephone.
I ring a very nice bell and can "mute" the bell (touching it with my hand to stop the ring just after thumbing the striker), so when ringing for information rather than hazard, it's a short quick ring, rather than a long loud ring.
Signs here alert cyclists to warn when passing, so certainly this etiquette is considered normal, but also I imagine it is not universal to all regions.
Passing a single pedestrian or runner on a quiet day: no bell, coasting for a short bit with a loud free hub (the rotating ratchet element on the rear wheel) alerts the pedestrian to my presence.
Passing a runner: normal ring from a distance so they have knowledge that the bicycle is passing
Passing a cyclist: one loud ring from a distance
Passing a pedestrian walking a dog: two loud rings, one far, one close, so that the pedestrian is aware of the approaching bicycle and he can prevent his dog from running at me/colliding. Many dogs do seem to enjoy a bicycle chase.
Antisocial pedestrians (i.e., walking side-by-side such as to be blocking the path in both directions, preventing the bicyclist from passing): several loud rings of the bell until the antisocial activity has abated. Announcements in my local tongue (not English) that they impede the flow of traffic.
(Here is a reference to K&R, the standard first reference to C, because I am obligated to make such a reference.)
Took me about two weeks and I'm not looking back :)
Available as a (free) DSP: https://chowdsp.com/products.html#tape