#measurement — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #measurement, aggregated by home.social.
-
The MOSAIC study addresses that the @who.int #HealthyAgeing concept "psychological capacity" lacks clear conceptualisation:
https://science-health.csu.edu.au/research/psychological-capacity-in-older-people/_recache
#IntrinsicCapacity #HRQLThe project has now published the definition and conceptual framework resulting from discussions in the International Working Group, which is now being further refined in a #Delphi study
https://www.sciencedirect.com/science/article/pii/S1279770726002022?via%3Dihub -
The MOSAIC study addresses that the @who.int #HealthyAgeing concept "psychological capacity" lacks clear conceptualisation:
https://science-health.csu.edu.au/research/psychological-capacity-in-older-people/_recache
#IntrinsicCapacity #HRQLThe project has now published the definition and conceptual framework resulting from discussions in the International Working Group, which is now being further refined in a #Delphi study
https://www.sciencedirect.com/science/article/pii/S1279770726002022?via%3Dihub -
The MOSAIC study addresses that the @who.int #HealthyAgeing concept "psychological capacity" lacks clear conceptualisation:
https://science-health.csu.edu.au/research/psychological-capacity-in-older-people/_recache
#IntrinsicCapacity #HRQLThe project has now published the definition and conceptual framework resulting from discussions in the International Working Group, which is now being further refined in a #Delphi study
https://www.sciencedirect.com/science/article/pii/S1279770726002022?via%3Dihub -
EN 13402 is a European standard for size labelling of clothes.
Based on actual body dimensions measured in centimetres, its aim is to make it easier for people to find fitting clothes by ensuring size consistency across brands and countries of origin.
-
Big Picture Science for Aug 24, 2026: Measure For Measure
REPEAT
Whether in miles or pounds, meters or kilograms, we take daily measure out our lives. But how did these units ever come to be, and why do we want to change them? From light-years to leap seconds, we look at the history of efforts to quantify our lives and why there’s always room for greater precision. Plus, we debate the virtues of staying imperial measurements vs. going metric.
Guest:* James Vincent - Author of Beyond Measure, the Hidden History of Measurement
Originally aired March 24, 2023
Download podcast at - https://bigpicturescience.org/episodes/measure-for-measure
You can listen to this and other episodes at http://bigpicturescience.org/
Get early access to ad-free versions of every episode by joining us on Patreon. Thanks for your support!
#Measurement #BigPictureScience #SETI #News #Podcast #Science
-
New paper: "Valuation Without ℝ: A Category-Theoretic Foundation for Finite Measurement"
Can measurement be formalized independently of real numbers AND set theory?
We axiomatize "valuation" as a graded distinguishability map satisfying the ultrametric inequality. Dimension emerges as the growth exponent of the distinguishability graph.
Full paper: https://doi.org/10.5281/zenodo.21795656
-
New paper: "Valuation Without ℝ: A Category-Theoretic Foundation for Finite Measurement"
Can measurement be formalized independently of real numbers AND set theory?
We axiomatize "valuation" as a graded distinguishability map satisfying the ultrametric inequality. Dimension emerges as the growth exponent of the distinguishability graph.
Full paper: https://doi.org/10.5281/zenodo.21795656
-
New paper: "Valuation Without ℝ: A Category-Theoretic Foundation for Finite Measurement"
Can measurement be formalized independently of real numbers AND set theory?
We axiomatize "valuation" as a graded distinguishability map satisfying the ultrametric inequality. Dimension emerges as the growth exponent of the distinguishability graph.
Full paper: https://doi.org/10.5281/zenodo.21795656
-
The Clock and The Calendar Didn’t Have to Look Like This
Two of our basic time units are non-negotiable. A day is one rotation of the Earth. A year is one trip around the Sun. Nature hands us these whether we like it or not, no civilisation ever had to invent the day. Everything else - the week, the month, and even the hour, minute, and second - is a human invention layered on top. Nothing in physics requires 24 hours, 60 minutes, or a 7-day cycle. We made all of it up. And the fact that nearly every civilisation independently arrived at something […] -
NASA's Parker Solar Probe Flew In And Out Of The Solar Corona And Found A Source Of High-Energy Particles That No Existing Model Had Predicted
(When NASA's Parker Solar Probe passed through the solar corona during perihelion encounters at the heliospheric current sheet, its instruments recorded energetic protons at energies far above what existing models of particle acceleration at that location could account for.)
--
https://spacedaily.com/n-nasas-parker-solar-probe-flew-in-and-out-of-the-solar-corona-and-found-a-source-of-high-energy-particles-that-no-existing-model-had-predicted/ <-- shared technical article
--
https://doi.org/10.3847/2041-8213/ae3ca1 <-- shared paper
--
https://www.space.com/high-energy-particles-source-space-weather <-- shared technical article
--
https://youtu.be/Woo4yZby4BU?si=rzzND3qJkubGKyTo <-- shared space weather overview effects video, #AIslop notwithstanding 🙃 🫠 😉
--
“… A team… at the Southwest Research Institute… and… the University of Maryland’s Institute for Research in Electronics and Applied Physics has published an analysis of those measurements [link above]…, identifying magnetic reconnection at the heliospheric current sheet as the mechanism responsible. The proton energies detected were, in the study’s framing, approximately a thousand times greater than the available magnetic energy per particle that models of this process had predicted.
The finding matters for two reasons: it identifies a source of energetic particles close to the Sun that was not anticipated, and it raises questions about how far the existing understanding of reconnection-driven particle acceleration extends…
The Parker measurements suggest that picture needs revision. The magnetic island merging mechanism [the authors] identif[ied] can evidently produce proton populations at energies that challenge the boundary between what reconnection does and what shock acceleration does. Whether this source can explain a significant fraction of observed near-Earth energetic particle events, or whether it contributes mainly at energies and scales that remain confined close to the Sun, is a question the paper does not yet resolve…
Solar Orbiter, the European Space Agency mission operating in coordination with Parker, offers complementary measurements at somewhat greater distances. Comparing what the two spacecraft measure of the same particle populations as they propagate outward from the Sun will help establish which features originate close to the source and which are modified by the intervening solar wind. The energetic particle observations that puzzled researchers in the pre-Parker era now have a candidate mechanism. Whether that mechanism accounts for a large or small fraction of what actually reaches Earth remains the open question…”
#sun #solar #solarsystem #heliosphere #Parker #SolarOrbiter #spacecraft #research #monitoring #instrumentatin #spaceweather #solarflare #coronalmassejection #CME #NASA #ESA #magnetism #geomagnetism #proton #energy #particleacceleration #measurement #solarwind #risk #hazard #impacts #corona #perihelion #model #modeling
@nasa @esa -
@futurebird
Yes we do. And I apologise.
(Well, sort of.)
🙂
#units #measurement #metrology -
Testing Fountain Pen Inks
Question: has anyone done extensive testing on any fountain pen inks?
I don’t mean the standard Mountain of Ink style, sample card, writing sample, etc. visual comparisons. (I’d like to call this subjective measurement, but chromatographic measurements aren’t subjective if done in a controlled manner.)
I am thinking more objective testing: viscosity, density, flow rate @ a given line width, etc.
I was thinking about this type of testing tonight, and it seems to me that there are a lot of factors that would need to be controlled: temperature, air pressure / barometric pressure, nib consistency, friction (aka heat), etc. Given what I was thinking this could be an interesting experiment, if someone wanted to undertake controlling all the variables, and implementing the controls necessary for consistent results.
-
U.S. Geological Survey [#USGS] Geomagnetic Variometer Data - Capitalizing On Seismic Infrastructure
-
https://doi.org/10.1785/0220250185 <-- shared paper
--
#geomagnetic #geomagnetism #USGS #USA #CONUS #seismology #seismograph #measurement #spatialanalysis #spatial #stations #SeismographicNetwork #magneticfield #readings #spatiotemporal #magnetometer #collabration #spaceweather #risk #hazard #colocation #magneticstorm #earthquake #interdisciplinary #research #sampling #multidisciplinary #fielddata #mapping #GIS #cohosted #corrleation #sampling #fedscience #fedservice #publicgood
#USGS -
7 years ago, I wrote a blog entry about more imperial units, where I suggest new imperial units that convert somehow to metric.
https://wiesmann.codiferes.net/wordpress/archives/30025
Of course, XKCD managed to present a much more compact formula that binds imperial miles to nautical miles…
-
Trio Of Sentinel Satellites Map Methane Super-Emitters
--
https://phys.org/news/2023-09-trio-sentinel-satellites-methane-super-emitters.html <-- shared technical article
--
https://www.esa.int/Applications/Observing_the_Earth/Copernicus/Trio_of_Sentinel_satellites_map_methane_super-emitters <-- shared technical article
--
https://doi.org/10.5194/acp-23-9071-2023 <-- shared paper
--
https://doi.org/10.1016/j.rse.2023.113716 <-- shared paper
--
#GIS #spatial #mapping #remotesensing #satellite #Sentinel #Sentinel5 #Tropomi #machinelearning #algorithm #Copernicus #methane #climatechange #monitoring #measurement #greenhouseeffect #machineleaning #superemitters #AI #artificiallearning #detection #greenhousegas
#ESA -
🔥⏲️ Fudge Sunday "Can't Buy Me Lead Time" A look at lead time as a metric on a path to DevSecOps, platform engineering, and product-led culture
#leadtime #leadtimes #kpiimplementation #kpi #kpis #measurement #measurewhatmatters #lean #agilemindset #ux #devx #devops #devsecops #platformengineering #platformengineer #productledgrowth #productmindset #engineering #culture #customerexperiences #timetovalue #dora #softwaresupplychain #newsletter #newsletters
-
#SabineHossenfelder - Is #Science about to #End?
https://www.youtube.com/watch?v=-qSPy_HEJVU&ab_channel=BigThink
#Philosophy #Physics #PhilosophyOfPhysics #PhilosophyOfScience #GUT #GrandUnification #TheoryOfEverything #QM #QuantumMechanics #QuantumPhysics #QuantumComputing #QuantumTechnology #Measurement #Observation #StringTheory
-
#FabioPacucci - The #BoltzmannBrain #Paradox
https://www.youtube.com/watch?v=OpohbXB_JZU&ab_channel=TED-Ed
#Philosophy #PhilosophyOfScience #Probability #Statistics #Metaphysics #Physics #Cosmology #Observation #Measurement #MeasureProblem #TheMeasureProblem #Boltzmann #LudwigBoltzmann #Thermodynamics #Entropy #BoltzmannBrains #Infinity #InfiniteAge #Randomness #Fluctuations #Multiverse #TEDED #TED
-
Ethereum’s Dominance on the Rise: Market Share Increases by 3% Among Global Crypto Assets - Since Dec. 31, 2022, ethereum’s market dominance has increased by more than 3% amo... - https://news.bitcoin.com/ethereums-dominance-on-the-rise-market-share-increases-by-3-among-global-crypto-assets/ #ethereumdominancerating #marketcapitalization #bitcoindominance #cryptocurrencies #capitalization #marketupdates #coinmarketcap #cryptoeconomy #archive.org #measurement #comparison #percentage
-
A Savage Discussion of Measurement And Accuracy - It’s commonly said that the great thing about standards is that there are so many ... - https://hackaday.com/2022/01/07/a-savage-discussion-of-measurement-and-accuracy/ #classichacks #measurement #adamsavage #nanometers #toolhacks #accuracy #microns #meters