Lmst

New in the #VirtualObservatory: “Chandra Source Catalog Release 2.1” by Chandra X-ray Center
https://cxc.harvard.edu/csc/
#XRayAstronomy #Galaxies #Variability #Photometry

New in the #VirtualObservatory: “Chandra Source Catalog Release 2.1” by Chandra X-ray Center
https://cxc.harvard.edu/csc/
#Variability #Galaxies #XRayAstronomy #Photometry

Joel Tosi and Jerry Koske present on Practical Agile at Nebraska.Code().

https://nebraskacode.amegala.com/

#Aviture #PracticalAgile #Variability #Predicatability #Status #Results #Nebraska #TechConference #SiliconPrairie #ProjectManagement #techworkflow #DeveloperConference #Heartland #TechEvent #TechCommunity #ContinuousLearning #NebraskaTech #Networking

In case anyone's keeping score, the idea that JFETs have hugely variable properties and that this problem cannot be - or at least has not been - fixed with different design or manufacturing practices, this batch showed it pretty clearly to me.

20 J113s, minus 1 fake, equals 19 devices. I measured the Vgs / pinch-off voltage and the Id / drain current in my test rig. The result?

6 very distinct bins with between 2 and 6 devices in each. Vgs overall varied from (-) 1.30 V to 2.11 V (variance is 38% of the larger value, or 62% of the smaller...), and Id from 5.7 mA to 12.8 mA, a spread of 125% (!) of the smaller value.

No wonder so many JFET circuits just don't work if you don't hand-match the devices.

#variance #variability #characteristics #measure #measurement #match #JFET #tolerance

Joel Tosi presents 'The problems that arise when focusing on predictability instead of variability' July 25th at Nebraska.Code().

https://nebraskacode.amegala.com/

#ValueStream #Predictability #Variability #Dev #Test #Operations #TechConference #PracticalAgile #Nebraska #Agile #agileprojectmanagement #technology #lincolnne #softwareengineer #softwaredeveloper #programming #techevents #networkingevent

A quotation from John Adams

The Stream of Life sometimes glides smoothly on, through flowry meadows and enamell’d planes. At other times it draggs a winding reluctant Course through offensive Boggs and dismal gloomy Swamps. The same road now leads us thro’ a spacious Country fraught with evry delightful object, Then plunges us at once, into miry Sloughs, or stops our passage with craggy and inaccessible mountains. The free roving Songster of the forest, now rambles unconfin’d, and hopps from Spray to Spray but the next hour perhaps he alights to pick the scattered Grain and is entangled in the Snare. The Ship, which, wafted by a favourable gale, sails prosperously upon the peaceful Surface, by a sudden Change of weather may be tossed by the Tempest, and driven by furious, opposite winds, upon rocks or quicksands. In short nothing in this world enjoys a constant Series of Joy and prosperity.

John Adams (1735-1826) American lawyer, Founding Father, statesman, US President (1797-1801)
Diary (1756-03-27)

Sourcing, notes: wist.info/adams-john/30195/

#quote #quotes #quotation #qotd #humancondition #struggle #change #difficulty #disaster #fortune #joy #life #metaphor #misfortune #problems #prosperity #troubles #variability

A quotation from Nassim Nicholas Taleb

Don’t cross a river if it is four feet deep on average.

Nassim Nicholas Taleb (b. 1960) Lebanese-American essayist, statistician, risk analyst, aphorist
The Black Swan, Part 2, ch. 10 “The Scandal of Prediction” (2007)

Sourcing, notes: wist.info/taleb-nassim-nichola…

#quote #quotes #quotation #qotd #blackswan #assumptions #average #danger #expectations #mean #variability #variance

#statstab #356 Measures of Heterogeneity

Thoughts: An overview of different measures, I^2, Q, H^2, and associated R code.

#metaanalysis #heterogeneity #effectsize #effectsize #variability #error

https://bookdown.org/MathiasHarrer/Doing_Meta_Analysis_in_R/heterogeneity.html

Joel Tosi and Jerry Koske present on Practical Agile this July at Nebraska.Code().

https://nebraskacode.amegala.com/

#practicalagile #variability #predicatability #status #results #Nebraska #TechnologyConference #agileprojectmanagement @joeltosi

incoming—Great Salt Lake, UT (2022)

#landscape #landscapephotography #fineartphotography #beach #inland #clouds #sky #meteorology #weather #greatsaltlake #utah #variability #stormy

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view from a beach looking back inland with a large cloud with bands of rain falling

GLP1-RAs in Type 1 Diabetes: Dosing and Pharmacokinetics
As we discussed in the previous article, people are starting to use incretins as an adjunct therapy in the treatment of type 1 diabetes. All off label, of course.

Anyone familiar with these drugs will know that they are indicated to be injected once a wee
https://www.diabettech.com/glp1-ra/glp1-ras-in-type-1-diabetes-dosing-and-pharmacokinetics/
#GLP1RA #Dosing #Halflife #Mounjaro #Semaglutide #Tirzepatide #variability #WeGovy

Centuries ago, I published a manuscript on BioRχiv about the love/hate relationship between variability and robustness in embryogenesis.

And now, it's published in Science! I am so proud 🥳

https://www.science.org/doi/10.1126/science.adh1145

We went through three (3!) rounds of revisions. Although we did not change a comma in the abstract, the revisions improved the quality of the work very much (we nearly doubled the sample size and added an entire figure).

#variability #robustness #embryology #morphogenesis #mouse

🆕Photoblog: “Comparing 𝑀𝑦𝑟𝑚𝑖𝑐𝑎 𝑟𝑢𝑔𝑖𝑛𝑜𝑑𝑖𝑠 populations between dolines and surrounding areas in Hungary", Bonita Ratkai give us an inside about her research on variation among populations of 𝑀𝑦𝑟𝑚𝑖𝑐𝑎 𝑟𝑢𝑔𝑖𝑛𝑜𝑑𝑖𝑠 in dolines.

#karst #dolines #behaviour #variability #functional #traits

https://blog.myrmecologicalnews.org/2024/10/01/comparing-myrmica-ruginodis-populations-between-dolines-and-surrounding-areas-in-hungary/

New preprint by postdoc Joanne Jingwen Li on the functional relevance of Pre-speech Auditory Modulation (PSAM): https://www.biorxiv.org/content/10.1101/2024.07.13.603344v1

#Speech #MotorControl #Auditory #Variability

🥁🥁🥁Sim Alert! We are so excited to share Projectile Data Lab, where students can collect and analyze real-world data with #variability! Not only can Projectile Data Lab be used as a true virtual lab, students can also use it to explore fundamental concepts of measurement uncertainty, random variables in a system, and propagation of error. phet.colorado.edu/en/simulations/projectile-data-lab
#physics #chatphysics #projectileMotion

Leaves of three, let it be? Wide variability among poison ivy plants makes identification more challenging
https://phys.org/news/2024-04-wide-variability-poison-ivy-identification.html #biology #PoisonIvy #identification #variability #iNaturalist #AmericanHogPeanut #AI

Only a few days left (Jan. 31st) to submit to the JSS special issue on intelligent software product lines: https://2023.splc.net/calls/call-for-jss-special-issue/ (cc @vamosconf) #variability #AI

(the pic above was ai generated)

In Europe, most countries will likely rely on a mix of #solar and #wind power to generate most of their #electricity in the future. These are the most important sources of #renewable energy.

However, their #variability is challenging for the #electricity system.

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