Alexandre Santos

16 Questions 21 Answers 0 Followers

Questions related from Alexandre Santos

There is some reliable proofreading online service indications for solve weak English for non-native English speakers?

02 February 2019 4,128 1 View

Are there any approach to classifying soils from RGB images obtained by unmanned aerial vehicle (UAV)?

Dear RG Members, Are there any approach to classifying soils from RGB images obtained by unmanned aerial vehicle (UAV)? Thanks

12 December 2018 6,695 0 View

What is the time for incorporation into leaves of calcium silicate (12% of Si) in teak tree?

Dear Members, I wiil add in the roots of two year old teak trees (~ 3 meters) different doses of Calcium Silicate (12% of Si) and would like to know how many time I wating for I collect the...

11 November 2018 1,927 0 View

Spectral reflectance estimation from RGB image of drone is possible?

Dear Members, I've like to know if spectral reflectance estimation from RGB image of drone is possible?

10 October 2018 8,740 1 View

Are there any references that relate IOT investment and agricultural profits?

10 October 2018 5,343 0 View

There are any list of substances that reduces hygroscopic effect in commercial medicaments?

Safety for oral consumption.

08 August 2018 8,590 1 View

Inferences about soil physical properties (water +granulometry) using RGB +NIR spectrometry is possible?

Dear RG Members, I'd to know is inferences about soil physical properties (water +granulometry) using RGB +NIR spectrometry is possible? Thanks in advanced, ASANTOS

11 November 2017 5,341 3 View

How to extract mean pixels values using circular samples in raster?

Dear RG Members, I'd like to extract mean pixels values using x,y coordinates by defining a buffer or area surrounding individual point coordinate. My circular sample represents the radius of a...

02 February 2017 9,830 0 View

Data frames in specific pairwise comparison matrices format in R, is possible?

I'd like to create a specific pairwise comparison matrices using a data frames. For this I have: Data frame with 5 products (deltametrina,fipronil,imidaclopride,sulfluramida,tiametoxam) and 2...

01 January 2017 484 0 View

Problem with sub-criteria code for multiple decision makers ?

Dear Members, I try to create a yaml file with a Fun criteria, two sub-criteria (Cargo Capacity, Passenger Capacity) for 3 multiple decision (Dad, Mom and Kid) for my AHP hierarchy tree for...

01 January 2017 1,142 3 View

Questionnaire formulation for analytic hierarchy process (AHP)

Dear Members, I'd like to create a questionnaire for analytic hierarchy process (AHP) in a insecticide study. In my study, each decision maker investigates the values (Saaty fundamental...

12 December 2016 7,452 9 View

I'd like to know if there are any paper about chemical characterization of mealybug wax?

Dear Members, I'd like to know if there are any paper about chemical characterization of mealybug wax? Thanks, Alexandre

10 October 2016 5,169 4 View

Classification using a rule based in my example is possible?

I have a pairs contrasts (results$pairs) and descending order p value (results$p) in a data frame: pairs

10 October 2016 2,631 3 View

Anova and confidence intervals for inhomogeneous cluster process models in point process?

I have two questions, first if there are approaches likeanova.ppm for comparing a clustered point process models kppm inspatstat package (example above)? And second the same question forestimate...

03 March 2016 9,232 2 View

Where is the better organic solvent for insects cuticular hydrocarbons extraction?

insects, physiology,cuticle

03 March 2016 9,942 3 View

Anybody knows any script for contrasts by combination of levels for PERMANOVA in R?

R; vegan; contrast; PERMANOVA

02 February 2016 556 2 View