How to solve spikes and peaks in interpolated raster surfaces with Kriging?

25 November 2020 9,657 4 View

What micropollutants can I analyze on HPLC ?

Greetings, I am wondering which micropollutant I may be able to see with HPLC analysis (no tandem MS), for example diclofenac or ibuprofen. I would test on spiked water samples, so theoretically I...

03 June 2020 3,723 3 View

How do you make your analysis scripts 'reviewable' when there is a lot of bulky code repititions?

Hey everyone! How do you make your code readable for other people when there are long chunks of code which you repeat a lot (e.g. the same fancy figure for 10 DVs)? My current solution: I...

12 February 2020 549 1 View

Parallel computing and graphic CPU (GCPU) usage in R, is it possible with ALL R packages?

Hi all, surfing the web I wasn't able to find a simple and effective answer to my question. In other words, I need to speed up a code I wrote using several packages such as raster, rgdal, biomod2...

13 December 2019 1,703 4 View

HPLC analysis - why do I have different area values for the same sample?

Good morning, I am currently doing some standards for my HPLC. My interest compound is butyric acid and I am injecting it in four different concentrations in order to build the standard and the...

15 August 2019 9,049 5 View

Any suggestion for a low volume reverse osmosis filtration system?

Dear all, I am looking for a reverse osmosis system to concentrate a sugar solution at laboratory scale. The volumes I am going to treat are quite small, 10 - 50 mL and therefore I am looking for...

10 June 2019 4,280 2 View

HPLC analysis for VFA - how to correctly do an HPLC run?

Hello everyone, I've been using an HPLC for VFA detection but I have little experience. I'm specifically looking for acetate, propionate, butyrrate, valerate, etc. . I'm working with a c18 column...

28 May 2019 4,152 7 View

Where can I find the right CHARMM22 parameters for my paramagnetic complexes?

Hello, I'm trying to model some gadolinium complexes through molecular dynamics using the parametrized CHARMM22 force field as described in International Journal of Quantum Chemistry, Vol. 73,...

04 April 2019 6,889 1 View

Which indicator for goodness of fit?

Dear all, I'm testing 5 different models and I'm using the Absolute Relative Error (ARE) which is (predicted-observed)/observed, the Absolute Error (AE) and the Root Mean Squared Error (RMSE) as...

06 April 2018 6,582 5 View

Do you know anything about possible interactions between proline and mGluR5 glutamate receptor ?

Do you know anything about possible interactions between proline and mGluR5 glutamate receptor ? I have found that proline interferes with other glutamate receptors, but nothing about mGluR5, but...

24 January 2018 5,709 4 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

What analysis to choose with a large neste dataset and clearly skewed or kurtotic distributions?

Hello! I have a dataset of n=3000 nested within 8 countries with approximately 200 or 400 responses in each country. I originally planned to perform multilevel modelling with 4 dependent variables...

02 March 2021 6,865 1 View

Do you know any MR image dataset?

I would like to research on MR images (0.5T and 3T). Can you please suggest some websites that I can download dataset including both 0.5T and 3T MR images? Thank you.

02 March 2021 7,735 3 View

Can NFL theorem be valid in infinite search space in ML?

NFL theorem is valid for algorithms training in fixed training set. However, the general characteristic of algorithms in expanded or open dataset has not been proved yet. Could you show your...

01 March 2021 1,189 3 View

Does anyone have kinetic and kinematic dataset for gait classification?

I want to differentiate between normal and abnormal movement. For this reason, I am looking forward to this type of dataset.

01 March 2021 9,485 1 View

Where to find data on trees in tropical agroforestry?

Hi, I'm looking for data (mainly related to management: growth rate, canopy size, soil and climate preferences, etc.) about tropical trees used in tropical agroforestry. Have you ever heard about...

28 February 2021 7,356 8 View

Where can I find public datasets with Covid-19 patient information?

Hi, I'm looking for public datasets that have CT, X-ray information, or medical records for patients with Covid-19. Does anyone have suggestions?

28 February 2021 4,760 3 View

I need dataset for recommandation system?

Hi every body I need to collect datasets from different source to work on recommendation system algorithms, could you advise me how collect data?

27 February 2021 7,063 7 View

How to evaluate unsupervised clustering metrics when some elements do not have a cluster label in the result?

I run algorithms like HDBSCAN and MeanShift, and compare them with K-means and GaussianMixture. The first two algorithms do not return cluster labels for some elements in the dataset. My question...

27 February 2021 428 3 View

Your thoughts on the spherical densiometer to estimate relative species canopy cover?

Hi biologists and biogeomorphologists, I want to characterize vegetation plots on a transect that follows a successionnal gradient from a river bed to a mature forest. Ecologically, I am...

26 February 2021 5,720 2 View