Age of the Isimila Prehistoric Site in Tanzania?

Does anyone knows results from the new dating program from the Isimila Prehistoric Site in Tanzania?- of course without to give away too much, before a final publication. The data of ca 260...

03 February 2021 6,864 3 View

How to apply graphene oxide on an gold electrode?

Dear Fellows, now it is the time to push graphene applications further in terms of easy and low cost production surroundings. Thus I recently dived in the materia and I am facing tons of papers,...

02 February 2021 6,284 2 View

Is there any tool or database to identify unknown materials using Raman Spectroscopy?

Hello, I'm loonking for some online tool or database where I can identify for me unknown materials using the wave number of Raman peaks and maybe including some filtering using elements. Do you...

08 January 2021 3,227 5 View

Matlab: train random forest with time series? How to transform time series data to a supervised learning dataset?

Hey, I've build random forest using Matlab Machine-Learning Toolbox Function (treeBagger). I've computed several kinematic features like velocity or acceleration as predictors (24 predictors) for...

22 December 2020 2,638 3 View

How to calculate the dissipated power in a semiconductor?

If I am dealing with a simple conductor that follows Ohm's law I can take the dissipated electrical power for a DC current running through the conductor as P = U*I. However, I think that this...

30 August 2020 4,747 4 View

Are there any promising approaches for deep learning for classifications based on very small data sets?

Hi, I am looking for deep learning approaches to pattern recognition on very small data sets. Previous attempts using convolutional neural networks have been far less powerful than common machine...

24 April 2020 1,411 6 View

How can I determine a measure for the similarity between two time series?

I am looking for a way to compare two time series and to find a measure of similarity between them. Previous ideas were to compare the distance between both series and to count the number of...

19 April 2020 5,577 20 View

Has anyone experience with dry electrodes for EEG / EVP / ERP?

Hi, has anyone good experience with dry EEG electrodes, e.g. from ANT, for EVP/EEG recordings? I have read that impedance is much higher compared to wet electrodes. Thanks - Johannes

13 April 2020 7,306 4 View

Examples of overfitting to reporter assay through directed evolution?

Let's say you're developing an enzyme to catalyze a certain reaction. But the progress of this reaction is only measurable through e.g. fluorescently labelled substrate analogs, i.e. not actually...

24 March 2020 7,856 3 View

Hi, i need help with ANSYS FLUENT evaporation simulation?

i am trying to simulate a solar drying chamber in Ansys Fluent. Hot air enters the chamber and inside the chamber there are products with high moisture content. The hot air need to carry the...

20 September 2019 8,952 2 View

How to remove BF3 etherate from a reaction mixture?

20 January 2021 6,322 2 View

Is there a link between the Chu-construction and the Cayley-Dickson-construction ?

The Chu-Construction allows to obtain a *-autonomous category from the data of a closed symmetric monoidal category and a dualizing element. The Cayley-Dickson-construction builds an algebra B =...

06 January 2021 7,737 10 View

Which conference paper to chose for 5g antenna publication?

I need to submit my paper on 5g antenna, I have only done the simulation and have not physically fabricated the antenna. I need to publish the paper soon anywhere. can anyone suggest to me where I...

22 December 2020 6,538 3 View

Did anyone use spaCy multi-langage model (xx_ent_wiki_sm) to analyze Eastern Eurpean languages (e.g. Estonian, Slovakian, Croatian)?

I'm looking for morphological models that could used for stemming (NLP) in python for following languages: Croatian, Czech, Estonian, Slovakian.

08 December 2020 1,277 2 View

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08 November 2020 6,673 4 View

Where is the error in the computation of coefficients of Baker-Campbell-Hausdorff formula?

I have a Lie Algebra with a basis: A_1 = [[0 1 0], [0 0 0], [-1 0 0]] A_2 = [[0 0 1], [-1 0 0], [0 0 0]] A_3 = [[0 0 0], [0 1 0], [0 0 -1]] The Lie brackets are [A_1,A_2] = A_3 ; [A_1,A_3] = A_1...

21 October 2020 1,479 6 View

What is the difference between Fluorescence and most flavors of Raman Scattering?

I'm new to all things Spectroscopy so be gentle :-). I'm puzzled to find the difference between fluorescence and most variations of Raman scattering. They both involve exciting atoms from their...

20 October 2020 299 8 View

How to compute div&curl of volume velocity field with Helmholtz decomposition if velocity field is known?

I ran into an interesting mathematical problem that is the result of the use of infinitesimal vector calculus in relation to the Helmholtz theorem and the vector LaPlace operator. I've also...

15 June 2020 1,264 7 View

Are there direct proofs of Fermat's Last Theorem based on Induction on z not on n?

(texts below from Wikipedia English ) In mathematics and logic, a direct proof is a way of showing the truth or falsehood of a given statement by a straightforward combination of established...

09 June 2020 3,254 12 View

How to use EIGEN or BLAZE Linear Algebraic Libraries for CFD solvers?

Are there any tutorials which demonstrates the usage of C++ Linear Algebraic libraries like EIGEN ( http://eigen.tuxfamily.org/index.php?title=Main_Page ) or BLAZE (...

17 May 2020 9,662 1 View