Which methods and informations can be used and deducted from gazs analysis in a geothermal study?

About Gazs analysis(He, H2, O2, N2,CH4, COCO2, H2S, C2H6, C3H8), which informations they can bring in a geothermal study, and which softwares can be used for the interpretation? Any articles,...

26 March 2020 1,932 3 View

Any recommendation of Geothermal training, company, laboratory.. ?

I'm looking for an internship of 2-4 months in geothermal field, Do you have any suggestions of where can I apply for?

22 March 2018 847 7 View

How does the computational option file name give an invalid perplex option file keyword?

I got the msg of **error verr077** null_phase when i press enter to the computational option file name.. so i couldn't build the project on perplex.. what can be the reason so i rectify it!

01 March 2018 5,824 2 View

I am looking for a simulator for IoT(Internet of Things) applications?

Are there simulators (platform, framework, ....) to create IoT(Internet of Things) applications without using physical material?

04 September 2016 2,959 93 View

How to detect Aluminium oxide (AlOx) on PET films?

Hello, I'm looking for an easy way to detect if a PET film is AlOx/Siox coated or not. especialy when PET is laminated to another film (e.g. PE). Thanks for your help.

12 June 2016 1,473 5 View

Are the superglass and the supersolid states observed experimentally? Or they still under debate?

06 January 2015 5,036 3 View

Can the anomalous density be measured experimentally? If yes, how?

The anomalous density quantifies correlation between condensed pairs and non condensed pairs.

18 December 2014 2,333 4 View

How to classify strictly upper triangular matrices by similarity?

Let F be a field. Consider U, the set of n times n strictly upper triangular matrices in F. For X, Y in U, we call them similar if there exists some S, which is non-degenerate and upper...

01 March 2021 2,957 8 View

How can I generate random samples from Bingham distribution in R? How can I construct those symmetric matrices?

in the function rbingham(n,A) in R software how can I construct that A (symmetric) matrix?

24 February 2021 3,528 3 View

Matrix based scientific data analysis: extrapolating to matrices of sets?

Data sets, when structured, can be put in vector form (v(1)...v(n)), adding time dependency it's v(i, t) for i=1...n and t=1...T. Then we have a matrix of terms v(i, j)... Matrices are important,...

30 January 2021 9,295 6 View

Standard addition calibration without blank matrix available?

I have a problem of analytical chemistry. We are working on a spectroscopy technique (FTIR) for the quantification of a mineral phase in complex matrices. We intended to use chemometric techniques...

12 January 2021 7,739 1 View

Would anyone have a sample survey questionnaire for an AHP-TOPSIS study?

I am currently working on my undergraduate thesis project and we are trying to compare the AHP method with the AHP-TOPSIS method. I have already found the format for an AHP survey questionnaire,...

03 January 2021 7,213 3 View

How to export Mass and Stiffness matrices using Ansys Workbench?

Hello, I am trying to export Mass and Stiffness matrices using Ansys Workbench via Modal analysis modular, with APDL commands inserted. However, there is no .matrix file generated. Could anyone...

17 December 2020 1,196 5 View

Confusion matrix interpretation - does my class imbalance result in the difference in precision?

I the LightGBM algorithm to predict the outcome of tennis matches. Next I made two confusion matrices, one for the training set and one for the test set. I calculated stats as precision, recall,...

08 December 2020 2,969 3 View

How does the performance of AgNPs vary when they are directly coated on a substrate vs when they are embedded in solid matrices before application?

Is the surface area and accessibility entirely different in these two cases? If yes, then, does that have a significant influence on the performance? Since my work pertains to antibiofouling...

07 December 2020 6,285 3 View

How do I linearize a model that contains the min() function, to derive state space matrices?

I'm trying to linearize a non-linear model and write it in state-space form (derive state-space matrices) for control and optimization purposes. The nonlinear model is: x(k+1)=f(x(k),u(k),d(k)),...

06 December 2020 9,029 3 View

Is there any proof of rank equalities of a block matrix based on the ranges of its submatrices?

I wish if someone send me the proof of the famous theorem of rank equalities due to G. Marsaglia which cited in many publications on ranks for block matrices involving generalized inverses. For...

23 November 2020 141 3 View