José Lucas Safanelli retweetledi
Some updates from our project...
soilspectroscopy.org/updates-from-t…
English
José Lucas Safanelli
366 posts
José Lucas Safanelli
@zecojls
Research scientist~ soils and agriculture ∩ spectroscopy, remote sensing, data science, etc.
Katılım Ocak 2018
767 Takip Edilen213 Takipçiler
José Lucas Safanelli retweetledi
A call for spectroscopy solutions for soil information from from @FAO #GLOSOLAN. We agree and th Soil Spectroscopy for the Global Good initiative is helping address all seven challenges identified here... a thread (1/9)
sciencedirect.com/science/articl…
English
José Lucas Safanelli retweetledi
Low-cost scanning of fresh soils can reduce up to 40% of the project cost and deliver reliable results with the same statistical confidence.
Paper with public access is available on this link: lnkd.in/ep32VqDg
English
José Lucas Safanelli retweetledi
Very excited to have this out (and in Nature Geoscience, no less!).
We returned to in-field incubations of isotopically enriched litter and pyrogenic OM ten years after inception, and were able to glean some insights into the persistence patterns of the SOM that was formed.
Nature Geoscience@NatureGeosci
Article: Decadal persistence of grassland soil organic matter derived from litter and pyrogenic inputs @samleuthold @jso_soong @csuagsci nature.com/articles/s4156…
English
José Lucas Safanelli retweetledi
Our paper describing the development of the Open Soil Spectral Library (OSSL) is now published. A great team effort led by @zecojls #NIFAimpacts #PLOSONE
dx.plos.org/10.1371/journa…
English
José Lucas Safanelli retweetledi
Our Data in Brief paper describing the @SiWareSystems Neospectra dry soil spectral library and models is now live (as a pre-proof)...
sciencedirect.com/science/articl…
English
José Lucas Safanelli retweetledi
We've heard there will be a lot of cool spectroscopy work in this position!
Jonathan Sanderman@sandersoil
Job alert! I'm looking for a new research assistant (2 yr initial funding) to supports lots of different #soilhealth and #soilcarbon projects at @WoodwellClimate. Please retweet (repost). workforcenow.adp.com/mascsr/default…
English
Come work in this fantastic group to advance soil carbon science!
Jonathan Sanderman@sandersoil
Job alert! I'm looking for a new research assistant (2 yr initial funding) to supports lots of different #soilhealth and #soilcarbon projects at @WoodwellClimate. Please retweet (repost). workforcenow.adp.com/mascsr/default…
English
Happening now "Oxisols & Mollisols - Important Agricultural Soils in Brazil and USA: Implications for Management"... youtube.com/watch?v=JLNxRx… Recording available later...
YouTube
English
@DuquesaDetax Nessas horas fico pensando porque não aplicam uma função para mapear o salário em uma taxa de IR, como um score. Evita essas transições de classes...
Português
Mas, claro, tem a possibilidade de isentar a galera que ganha ATÉ 5k/mes.
Aí teríamos a galera que ganha ATÉ 5k com 0
E a galera que ganha 5.001 na última faixa da progressiva.
Ia ser legal? Demais, confesso.
Português
José Lucas Safanelli retweetledi
Nobel Prize in Physics, and Soil Science 🏅💾👨🌾
CSA News
DM for the full article
acsess.onlinelibrary.wiley.com/doi/10.1002/cs…
English
José Lucas Safanelli retweetledi
English
José Lucas Safanelli retweetledi
In SSSAJ: X-ray powder diffraction analysis w/ full-pattern fitting method using R package powdR was confirmed to accurately determine mineral contents in agr soils, if we prepared our own mineral library for fitting standards doi.org/10.1002/saj2.2…
@ku_137_ro @na_4_ka & team
English
José Lucas Safanelli retweetledi
Announcing Shiny Assistant, an AI-powered tool that can help you build Shiny applications!
shiny.posit.co/blog/posts/shi…
English
@g_fiske Is this from today? The sky was looking different this evening
English
José Lucas Safanelli retweetledi
Identifying optimal organic matter levels is challenging because, with management, ag soils can function with low SOM levels. Choosing an optimal level of soil organic matter by comparing it to similar soils/climate/land cover just sidesteps the question "how much is enough?"
AI 4 Soil Health@AI4SoilHealth
Soil organic carbon (SOC) is a key #soilhealth metric, but identifying optimal SOC contents can be challenging Researchers have developed a new assessment method, which could help EU policymakers target increases in SOC to improve soil health Learn more: ai4soilhealth.eu/a-new-approach…
English
José Lucas Safanelli retweetledi
For Dr. Nigel Golden, Research Scientist and Climate Justice Specialist at Woodwell Climate, making climate science just and equitable is akin to watching an ecosystem evolve over time.
🌱 Read Golden’s essay on our Climate Justice Committee: ow.ly/YtNb50TChWc
English
José Lucas Safanelli retweetledi
Many uncertainty quantification tools have severe problems:
Bootstrapping -> underestimates variance
Quantile regression -> undercoverage
Probabilities -> miscalibrated
Bayesian posteriors -> easily misspecified
A way to fix these short-coming: conformal prediction
English
@hannah_kerner @opencholmes @jacobsn This is awesome! Thanks for sharing. Apart from the training data, have you shared or plan to share maps of predicted field delineations across the globe?
English
José Lucas Safanelli retweetledi
I'm so excited to finally introduce Fields of The World (FTW!) - the largest & most diverse ML dataset for field instance segmentation in satellite images. FTW has >70k samples from 24 countries (4 continents), with semantic & instance labels + Sentinel-2 RGB-NIR from 2 dates. 🧵
English