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rolph

10,629 karma · joined February 5, 2019

ITS BOT SEASON! hike your gear and find a good blind.

[hackernwsbdfgijlmopqtuvxyz]X[jackdwlvemybigsphnxofqurtz]

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rolph··on LAPD Regularly Pulled over Innocent People Plate Readers Flagged Cars as Stolen
the HN hug of death effect.
rolph··on Why recruiters can't find workers and new grads can't find jobs (it's not AI)
it also seems there are not enough people entering the workforce in parallel with a large proportion of retirement.

plenty of unneeded business/finance graduates available but we really need more sci tech and med to stay in step with demographic shift.

rolph··on SpaceX built to separate retail investors from their money
im not going to advocate for the devil, but the title seems to be the distilled essence of extractive business models.

i think the problem starts with mistaking such business for a philanthropic or non profit model.

that being said investors are a major "chattel" and if you abuse them, you start having problems.

rolph··on The Biggest Conspiracy of All
wings, all birds flu with wings from one region to another.

some birds flue in a chimminy so you can have birds flu in your home.

rolph··on Autopsy Study Finds Replicating SARS-CoV-2 in the Hearts of Long Covid
the antecedent decedent, was deceased and desistant.
rolph··on Disney is exploring adding a free tier to Disney+ as YouTube draws TV viewers
there used to be a time when the ads interrupted the content, now the content is an interruption to the ads.
rolph··on Spider venom kills varroa mites without harming honeybees
this is why you enforce a no brood condition by removing brood, and by rehiving your split into a new hive,with no brood.

the original hive can be kept as a queenless hive, and they will make replacement queens, if you keep a frame of brood.

if you get a gravid queen from the original hive, you can force broodless period when rehiving to a clean hive, and both sides of the split greatly reduce mite population.

if you have year round brood conditions, these maneuvers will be essential to mitigating varroa. you should also look at oxalic acid[careful!] as a mite deterrent.

rolph··on Spider venom kills varroa mites without harming honeybees
a mesh bottom board, is one part of an integrated plan.

varroa mites are obligate to brood, so interruption of brood cycle should be integrated into your cultural plan. here we are on the edge of swarming season, which is perfect time for artificial splits of hives.

you intercept swarming by moving roughly half the bees and the queen into a "package", and removing brood from the original hive except for one frame of brood. rehive the artificial swarm after 2 or three days.

this creates a break in brood cycle, allows adult bees to clean and shake free of mites, interrupts the mite brood cycle, and mitigates swarm loss.

some will cage the queen to break brood cycle however this is stressful, and must be accompanied by more hive space, or reduction of bee population.

rolph··on Extracts of Polypore Mushroom Mycelia Reduce Viruses in Honey Bees
bees dont just collect honey and pollen they collect spores, resins, leachates, bacterial plaques, mineral deposits, a whole pharmacopeia of things.
rolph··on Two teens learn the hard way not to do toy gun drive-bys from a Waymo
actually i think learning the hard way would be to encounter someone with a real gun that believes they themselves, or an innocent third party are in emminent danger
rolph··on Waymo reports teen riders for bad behavior and delivers them to the police
im thinking a human driver would WTF and pull over into a parking the instant the BB guns came out
rolph··on Waymo reports teen riders for bad behavior and delivers them to the police
hmmm kidknapped due to a false positive would be a bit of an oops to try and rewind. its bad enough that the cops do it [just try and get them to give you a ride back to where thay took you from, even when they are told to cut you loose]

it causes real damages when you basically abduct and strand someone.

these "kids" were shooting orbees out the windows, so mischief on them, but get it wrong once and it could get expensive.

rolph··on Ask HN: Where are the good search engines for mathematical formulas?
try these

https://en.wikipedia.org/wiki/Lists_of_mathematics_topics

https://en.wikipedia.org/wiki/List_of_rules_of_inference

https://en.wikipedia.org/wiki/List_of_scientific_equations_n...

https://en.wikipedia.org/w/index.php?search=List+of+scientif...

rolph··on Autonomous flying umbrella follows and shields users from rain and sunlight
consider captain america, perhaps an autonomous flying riot shield that protects, and strikes out.
rolph··on Blood Cell 'Nurseries' Upend Understanding of Human Physiology
erythroblastic islands are non-macrophage dependent, in humans, not in mice.
rolph··on Astrophysicists Puzzle over Webb’s New Universe
hawking radiation is a postulated mechanism for tempurature of a black hole.

the whole thing started with information paradox, leading to the suggestion that a black hole would have to be associated with entropy, thus would have a temperature, but required an escape hatch to allow radiation, the thought experiment came to a thought solution when particle-antiparticle pair dissociation at the event horizon was postulated.

We Knew Black Holes Have a Temperature. It Turns out They Also Have a Pressure[2021]:

https://www.universetoday.com/articles/we-knew-black-holes-h...

Black hole thermodynamics:

https://en.wikipedia.org/wiki/Black_hole_thermodynamics

rolph··on Astrophysicists Puzzle over Webb’s New Universe
a tokomok involving a scale appropriate blackhole is a super cool concept that just came to mind
rolph··on As downtown Seattle offices empty, city facing years of 'zombie' towers
at face it seems like it would be "retooling" rather than ground up construction, with foundations for connection infra, it should go up fast, and easy if AMZ already owns it.
rolph··on As downtown Seattle offices empty, city facing years of 'zombie' towers
owned by amazon ..

now where should data centers be constructed, rather than arable farmland?

rolph··on What is a quantum computer good for? nothing – yet
so it sounds like a douglasadams-ism, we dont know the question to the answer.

that seems to reduce to, a solution in search of a problem.

rolph··on Giant trees have no trouble pumping water to top branches: new research
water isnt all thats needed, solutes mined from soil, by the root system are required by the entire plant.

Water and solute movement in plants:

https://www.ebsco.com/research-starters/anatomy-and-physiolo...

there is a disconnect between the roots and the xylem, its not a throughway, there is a switchover.

Plant Roots and Mineral Nutrition: An Overview of Molecular Basis of Uptake and Regulation, and Strategies to Improve Nutrient Use Efficiency (NUE)

https://link.springer.com/chapter/10.1007/978-981-15-9380-2_...

rolph··on AI researchers ran a secret experiment on Reddit users (2025)
yeah from a year ago chris!

it happens here too, except it seems to be about misinformational influence rather than research.

rolph··on Giant trees have no trouble pumping water to top branches: new research
you have an incorrect model, transpiration is capillary action and evaporation from mesenchyme

xylem is not a straw, is no where near the diameter of a straw, and its[transpiration] is not about increased pressure its about decrease.

psi values at the apical mesenchyme are around -100 to -150 megapascals dependent on species and relative humidity at the stoma.

physics and biology although intertrined are not the same catechisms, heres a link toward most of m.j. canny's work.

https://www.researchgate.net/scientific-contributions/M-J-Ca...

here is is a basic scheme of things

Water Movement in Xylem:

https://oercommons.org/courseware/lesson/87595/student-old/?...

Xylem:

https://en.wikipedia.org/wiki/Xylem

Hydrogen bond:

https://en.wikipedia.org/wiki/Hydrogen_bond

rolph··on I Could Kill You with a Consumer Drone
The US Federal Aviation Administration (FAA) has adopted the name small unmanned aircraft system (sUAS) to describe aircraft systems without a flight crew on board weighing less than 55 pounds

thus you would be using an aircraft(sUAS) to attack people, or if your breaking porch lights security cameras, pushing gate control buttons, you are attacking a building or facility.

i would expect this to involve a severe enforcement effort, and a lot of litigation.

rolph··on Gun Mistakes in Fiction Writing: Handgun Edition
sometimes, you just have to hang out in the right bar, and you will hear a multitude of secrets, this is why some projects had thier own towns so none of the inside would get out.
rolph··on Giant trees have no trouble pumping water to top branches
the research is relevant to the issue of transpiration column hieght as a postulated limitation to overall hieght of any tree.

a column of water is pulled by hydrogen bonding between molecules in a tug of war fashion, the top of the column is where water is dissociated from the column at such a rate as to maintain low pressure with respect to the column[xylem]

in summary water moves from bottom to top in a transpiration stream, that ultimately ejects water vapour from the leaves, resulting in a low efficiency mechanism, that loses a lot of the water but occurs at such a rate that the low efficiency is "good enough" for whats needed.

rolph··on Giant trees have no trouble pumping water to top branches: new research
more like capillary action.

https://en.wikipedia.org/wiki/Xylem#Cohesion-tension_theory

rolph··on Ants: Who looks after the injured in a colony?
we need to mimmick this behaviour in a drone swarm, as well as the reverse, bringing a replacement and reattaching.
rolph··on I Wasn't Allowed Prompting ChatGPT During My Chalk Talk: This Is Discrimination (2025)
i think you may enjoy:

45 Different Types of Humor with Examples in 2026

https://humornama.com/featured/education/types-of-humor/

rolph··on I Wasn't Allowed Prompting ChatGPT During My Chalk Talk: This Is Discrimination (2025)
i thought so, but i ran with it.
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