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

Not able to charge-discharge Li-ion coin cell at higher C rate ?

I am working on cathode material. I have made different Li-ion coin cell against Li metal using commercial available cathode materials such as LCO,LMO, LFP and NMC and also with the lab...

18 February 2021 1,450 3 View

What is the difference between the supplementary cementitious materials and alkali-activated concrete?

18 February 2021 9,188 3 View

For displacement control test, what is the relation between stress intensity factor and crack length?

There are two plates with horizontal center crack, one with crack length of a with the other with a+da. The bottoms are fixed while the tops are under the same displacement load. For intuition,...

11 February 2021 9,543 2 View

Difference between Second-harmonic generation and Two-photon absorption?

Hello Dear Researchers, I am confused about the Difference between Second-harmonic generation and Two-photon absorption? Can anyone describe the two phenomena briefly in the physical picture? What...

24 January 2021 9,912 5 View

How can I calculate convective heat transfer coefficient from turbulent boundary layer properties?

I know many textbooks include empirical relations between Nu, Re_x, and Pr inside a turbulent boundary layer on a flat wall. However, I want to directly calculate h from known boundary layer...

19 January 2021 1,294 3 View

Which kind of GPC solvent can be used to dissolve both lipid and salt?

I want to find a GPC available solvent to dissolve both lipid (DPPC, 2 mM) and salt (NaCl, 100 mM).

14 January 2021 3,805 2 View

Can any one suggest the name of Litchi insect/predator?

Is it a type of Ambush bug or what? Thanks

14 January 2021 9,381 3 View

Is it possible to publish a paper contradicting Einstein's special relativity in any Journal?

I just developed a new theory on electromagnetic and plan to publish in a Journal. The findings are purely through strict mathematical derivation without any disputable assumptions and also...

13 January 2021 1,558 5 View

How is linear form of plasmid circularized?

Hi all, I'm working on transforming E. coli with plasmid in a mixture of linear and circular form. What happened to the linear form once uptake? Do cells ligate them directly? Or cell DNase...

13 January 2021 8,336 4 View

How should I analyze the multiple scans in Malvern Zetasizer software?

Hello, I am currently using the Malvern Zetasizer software for the purpose of obtaining the size distribution of nanoparticles produced in the lab. When I perform the runs in the software to get...

15 February 2021 4,251 1 View

Which optimization algorithm is most efficient for fitting a regression model using training dataset?

The goal of regression model is either to minimize the prediction error or to maximize a classification accuracy depending on the type of the model. Is there any optimization algorithm that is...

10 February 2021 4,128 3 View

Why does the accuracy of NN decreases when two datasets are combined?

I am working on gait analysis using a feed-forward NN. When I use data from the accelerometer (3 columns for each axis if stored in a data frame), I get an accuracy of 95%, and when I used data...

07 February 2021 9,654 6 View

Which techniques are used to improve the accuracy of deep learning models by compressing neural networks?

Hi all, I am looking for enhancing the accuracy of a deep learning model using some techniques to compress neural networks. Could someone suggest to me some of the tools/techniques,...

29 January 2021 1,781 4 View

When is the right time to stop training a classification algorithm?

In this example giving 400 samples looks like there is an accuracy of 91.5% while training beyond that point, accuracy is getting decreased. Are 400 samples enough to keep for this example? If...

27 January 2021 5,657 3 View

45% top1 Accuracy on TinyImgeNet?

I trained a model from scratch no transfer learning of any kind I got top1 validation accuracy of 45.79 and top5 validation accuracy of 72.39. I did a lot of hyperparameters tuning I have seen...

19 January 2021 6,883 2 View

How to express accuracy of the neural network where the dataset has not been split into two, training set and test set?

In use, the weights obtained are considered with the greatest accuracy when the data set is divided, because the weights are initialized at random and the training data is swapped at random...

19 January 2021 5,714 4 View

Multicollinearity between bioclimatic variables in spatial distribution modelling?

Is there any manual guide to perform multicollinearity test between environmental (19 Bioclimatic) variables for MaxEnt modelling? Using all variables without removing the correlated one affects...

14 January 2021 3,807 7 View

Why do I have good performances for the test set but bad performances in predicting new data ?

Hello :) I'am trying to predict churn for the year of 2020 based on historical data from 2014 to 2019 on R Studio. The aim is to predict churn probability for every person. At the beginning...

13 January 2021 5,565 7 View

How to change an internal parameter during MATLAB fminseach?

An optimization is performed using the MATLAB fminseach function. This optimization has a parameter that adjusts the precision, and the larger the value, the wider the search range of solution...

12 January 2021 3,832 1 View