recentpopularlog in

pozorvlak : science   596

« earlier  
Are Critics of Economics Inconsistent? – Unlearning Economics – Medium
So, two lessons here. For critics, try to be more specific and avoid broad rhetorical statements like “economists ignore X”, where X is something broad like bounded rationality or finance. Instead try “economists have a very limited notion of X” or “economists ignore x”, where x is something more specific like non-optimising bounded rationality or endogenous generation of financial crises. For economists, don’t think critics are moving the goalposts when your model which purports to represent X actually misses what the critic was trying to say. Just because you use the same words as them, doesn’t mean you’re getting at the same thing.
science  badscience  arguments  economics  rationality  collapse  finance  globalfinancialcrisis 
11 days ago by pozorvlak
Practical Peer Review
"When the referees have a problem, there's a problem" is, quite literally, one of the most ego-destroying lessons of a life in science, but I am afraid it is a lesson, and the sooner it's absorbed the better.
academia  research  writing  science 
19 days ago by pozorvlak
One of the Greatest Scientists of the 20th Century You've Probably Never Heard Of
Fr Georges Lemaitre, who published the mathematics of an expanding universe in 1927 (before Hubble)
astronomy  physics  science  relativity  belgium  catholicism  religion 
24 days ago by pozorvlak
Bumblebee Flight Does Not Violate the Laws of Physics
The reality is that bees and comparable insects fly in an incredibly complex way that utilises, get this, mini hurricanes! We’ll link all this stuff at the bottom in the references if you’re interesting in the nitty gritty physics, but in lay terms, bees fly by rotating their wings, which creates pockets of low air pressure, which in turn create small eddies above the bee’s wing which lift it into the air and, thus, grant it the ability to fly.

To find this out, scientists have conducted a vari...
insects  bio  science  physics  badscience  lasers  lifeimitatessf 
28 days ago by pozorvlak
What Happens When You Freeze Water in a Container So Strong the Water Can't Expand Into Ice?
So, to answer the initial question, if you froze water inside a container so strong it couldn’t turn into ice, it would still turn into ice, just a slightly different type of ice in terms of scientific classification and its internal structure. Science!
water  materials  science 
28 days ago by pozorvlak
Disordered Hyperuniformity: A Weird New State of Matter in Chicken Eyes
Despite what you learned in school,there are way more than four states of matter. One possible new one, disordered hyperuniformity, was recently found in the weirdest place – the eyes of chickens.
chickens  science  materials  maths  chaos  eyes  bio 
28 days ago by pozorvlak
Evaluating Fuzz Testing - 1808.09700.pdf
Most empirical analyses of fuzz-testing have bad experimental design and/or statistical analysis.
computers  testing  security  infosec  science  badscience  statistics  fuzzers 
6 weeks ago by pozorvlak
Gaia Identifies a Stellar Gap
There is a gap in the Hertzsprung-Russell diagram in the middle of the M-dwarfs, possibly due to as-yet unknown physics involving a transition from mostly-convective to fully-convective stars.
science  physics  astronomy  space 
11 weeks ago by pozorvlak
How To Think Real Good | Meaningness
Figuring stuff out is way hard.
There is no general method.
Selecting and formulating problems is as important as solving them; these each require different cognitive skills.
Problem formulation (vocabulary selection) requires careful, non-formal observation of the real world.
A good problem formulation includes the relevant distinctions, and abstracts away irrelevant ones. This makes problem solution easy.
Little formal tricks (like Bayesian statistics) may be useful, but any one of them is only a tiny part of what you need.
Progress usually requires applying several methods. Learn as many different ones as possible.
Meta-level knowledge of how a field works—which methods to apply to which sorts of problems, and how and why—is critical (and harder to get).
research  rationality  ai  drugs  science  medicine  computers  intelligence 
july 2018 by pozorvlak
Why Sexism and Racism Never Diminish-Even When Everyone Becomes Less Sexist and Racist - Marginal REVOLUTION
"But our studies suggest that even well-meaning agents may sometimes fail to recognize the success of their own efforts, simply because they view each new instance in the decreasingly problematic context that they themselves have brought about."
science  cogsci  psychology  socialjustice  abuse  racism  sexism 
july 2018 by pozorvlak
Photo of person picking up extremely deadly blue-ringed octopus, displaying stress patterns
IF you are going to survive the ALMIGHTY CONE SNAIL, WHO KNOWS NO FEAR, TRIUMPHANT HEDGEMON OF THE MOLECULAR ARMS RACE, TRUE BORN HEIR TO THE SCYTHE OF DEATH ITSELF, FISHSLAYER, GOD AMONG MOLLUSKS, WHOSE WRATH IS MERCIFUL ONLY IN ITS BREVITY, ADMIRABLE IN ITS BEAUTY AND UNSULLIED BY THE UNWORTHY TOUCH OF MORTAL HANDS OR SCALES OR REALLY ANYTHING IN RANGE OF ITS RADULA HARPOON, then literally the only thing that’s going to save you is for you to be kept alive artificially (externalizing your respiratory functions to force your body to continue breathing, basically) until the effects of the venom wear off. And because of how quickly this venom acts, you need to get that medical attention VERY, VERY FAST.

And if you don’t get it, you will still be conscious while the paralysis slowly suffocates you to death.

Don’t touch the pretty shells.
photos  bio  snails  oceans  death  octopodes  science 
july 2018 by pozorvlak
Drugs for bad bugs: confronting the challenges of antibacterial discovery | Nature Reviews Drug Discovery
Discovering new antibiotics is really hard, and genomic approaches have not helped at all.
medicine  science  genetics 
july 2018 by pozorvlak
Effects of different cooking methods on health-promoting compounds of broccoli
The effects of five domestic cooking methods, including steaming, microwaving, boiling, stir-frying, and stir-frying followed by boiling (stir-frying/boiling), on the nutrients and health-promoting compounds of broccoli were investigated. The results show that all cooking treatments, except steaming, caused significant losses of chlorophyll and vitamin C and significant decreases of total soluble proteins and soluble sugars. Total aliphatic and indole glucosinolates were significantly modified by all cooking treatments but not by steaming. In general, the steaming led to the lowest loss of total glucosinolates, while stir-frying and stir-frying/boiling presented the highest loss. Stir-frying and stir-frying/boiling, the two most popular methods for most homemade dishes in China, cause great losses of chlorophyll, soluble protein, soluble sugar, vitamin C, and glucosinolates, but the steaming method appears the best in retention of the nutrients in cooking broccoli.
food  cooking  science  bio 
july 2018 by pozorvlak
Is there a difference between fresh, frozen, and canned vegetables? |
Although blanching can leach out minerals and break down biomolecules like vitamins, postharvest-ripened produce and blanched frozen produce have very similar overall nutritional content.

Canned vegetables are likely to be more heavily processed and may have BPA in them.
food  science 
july 2018 by pozorvlak
Random Thoughts: Inspiration Venus? | Selenian Boondocks
Have your scientists in an orbit 45 light-seconds from Venus, but not orbiting Venus itself - gets you most of the benefits, but saves tons of delta-v.
space  science  venus 
june 2018 by pozorvlak
« earlier      
per page:    204080120160

Copy this bookmark:

to read