'Sparse GCA and Thresholded Gradient Descent', by Sheng Gao, Zongming Ma.

http://jmlr.org/papers/v24/21-0745.html

#sparse #gca #pca

New paper out by @willerstorfi et al. in #GCA documenting the evaluation of planktic foraminiferal Na/Ca as a proxy for ocean salinity using plankton tows, sediment traps, and core tops: https://www.sciencedirect.com/science/article/abs/pii/S0016703723001187?

Take home message: looks like this proxy can be quite complex due to varying Na-bearing phases of the foraminiferal calcite, even though the Na/Ca in some of these phases may be strongly correlated to salinity. The authors conclude instead that due to the effect of [CO₃²⁻], foraminiferal Na/Ca over Cenzoic timescales may be a better proxy for major ion chemistry than salinity changes in the ocean.

‼️‼️‼️There remains no evidence for routine PJP prophylaxis in GCA/PMR #Rheumatology #PJP #GCA #PMR

RT @GuyKatzMD@twitter.com

Should we be prescribing PJP prophylaxis for patients with GCA/PMR?

Great study by Natalie Anumolu, Katie Henry, @SattuiSEMD@twitter.com, @EBRheum@twitter.com helps answer this important question.

1/4

https://www.sciencedirect.com/science/article/pii/S0049017222002050

🐦🔗: https://twitter.com/GuyKatzMD/status/1604187387684438016

.@UWRheum@twitter.com @AlisonBays@twitter.com have experience in #GCA #FastTrackClinic too!

https://pubmed.ncbi.nlm.nih.gov/34647696/

https://pubmed.ncbi.nlm.nih.gov/36126267/

RT @drdavidliew@twitter.com

6. Fast track GCA clinics from @PennRheum@twitter.com - how badly do we need ultrasound?
https://twitter.com/drdavidliew/status/1591464845198884867?s=20&t=zzdYrMgbEwhRkzXKwMocYA

🐦🔗: https://twitter.com/drdavidliew/status/1602606291574104064