What the reason for process_grid.py error?

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The Akaike information criterion of the random forest model ?

Please, how to calculate the number of model parameters of the random forest model to determine the Akaike Information Criterion (AIC) using this following expression: AIC = n * log(MSE) + 2 *...

27 January 2021 816 6 View

Any propositions for scientific journals for AI (machine learning) that do not take time for reviewing, max 3 months for response?

im searching for journals that do not take time for reviewing and response for max of 3 months. Not open access journals.

27 December 2020 1,978 9 View

Is it better to normalize Nile red absorbance to Bradford assay or to cell number?

I stained the fat droplet inside the cell using Nile red and read the absorbance by a microplate reader. Which better to do, normalize the Nile red absorbance to Bradford assay or to cell...

12 December 2020 8,036 2 View

Calcul Max (Stress, Strain) In Excel?

Dear researchers, I performed mechanical tensile tests and obtained results in the form of two columns (force in N, displacement in mm) after I calculated (stress in MPa, strain %). I would like...

05 October 2020 3,024 2 View

What are the adverse effects of mercury on atmosphere ?

05 October 2020 3,241 13 View

TIMESAT for yearly data time series?

Would it be possible to use TIMESAT for trend analysis for yearly MOD17A3 - 1 km time series. The dataset are for 14 years period.

07 September 2020 3,275 2 View

What is the time required to complete the reaction of green synthesis of nanoparticles?

The time required to complete the reaction of green synthesis of nanoparticles.

01 September 2020 8,497 4 View

Are you interested in learning about post war reconstruction?

Third edition application is open soon... if you are an Engineer, medical doctor, teacher, manager ...etc. and interested in learning about reconstruction, and development management , this is...

06 August 2020 1,139 3 View

Which is the best framework to use for building deep learning models to process big data (hadoop cluster), tensorflow or h2o?

im searching for efficient frameworks and easy to use, that implement deep learning models on big data (hadoop cluster)

20 July 2020 7,667 3 View

If there any command in Matlab Simulink , can make the optimization run and finish fast as you can in GA ?

Dear and greeting all researchers, I'm interested in optimization with several kinds of algorithms as an example GA, PSO, DE, GW, and others, but in this question asking, I specified for GA only,...

11 June 2020 2,064 2 View

How climate change will influences human and animal behavioral change?

The role of climate change influencing the human behavior as well as economics interest

01 June 2021 0 0 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View

How to define and get results (stresses) for certain points of a model in abaqus, using python? When the size of the model changes?

I want to do a parameter study of a aixsymmetric cylinder in Abaqus. I want to create several jobs where I get the stresses for 3 different points in my model. These points are defined. I wrote a...

01 March 2021 10,078 1 View

What are the countries most affected by extreme rainfall as a result of climate change?

Increased heat, drought and insect outbreaks, all associated to climate change, have increased wildfires. Decreasing water supplies, declined agricultural yields, health impacts in cities owing to...

01 March 2021 7,168 9 View

Which is suitable for use with Python? MySQL or SQL Server?

Which is suitable for use with Python? MySQL or SQL Server? What is your suggestion?

01 March 2021 3,422 3 View

What are the harmful effects of these extreme rainfall on the health of newborns? What are the reasons for that?

Extreme rainfall associated with climate change is causing harm to babies in some of the most forgotten places.

01 March 2021 5,647 4 View

How to arrange coordinates and extract climate dataset out of MPI-ESM-MR netcdf files?

Have a nice day everyone, I'm stuck in extracting datasets out of MPI-ESM-MR netcdf files because the latitude ranges from -3*10^6 to 3*10^6 and longitude ranges -5,9*10^6 to 5,9*10^6. Plus, the...

28 February 2021 912 3 View

Can anyone provide the Support vector regression code structure of LIBSVM MATLAB or python ?

Please, if Gaussian Parameter optimization is possible in this code structure

28 February 2021 278 3 View

How to modify Johnson cook equation in ABAQUS?

I wanted to add an extra parameter to the existing Johnson cook equation in the ABAQUS simulation. How to add those extra parameters. Ref: A modified Johnson-Cook material model with strain...

28 February 2021 4,841 3 View

No module named 'tensorflow.keras.backend.tensorflow_backend' ?

System Description Cuda 11.2 GeForce GTX 1080ti tensorflow version 2.4.1 keras version 2.2.0 python version 3.8 I was getting the below error when I try to run my code on the...

25 February 2021 6,673 2 View

Salah Hamad

Thanks Alex ,I am using windows ,The script about to calculate climate indices

Thanks, Alex, It was the version of the python program, I appreciate your contribution

Sundus F Hantoosh

Dear doctor

Running Alchemist on Cray XC and CS Series Supercomputers: Dask and PySpark Interfaces, Deployment Options, and Data Transfer Times

Rothauge et al.

"Abstract—Alchemist allows Apache Spark to achieve better performance by interfacing with HPC libraries for largescale distributed computations. In this paper we highlight some recent developments in Alchemist that are of interest to Cray users and the scientific community in general. We discuss our experience porting Alchemist to container images and deploying it on Cray XC (using Shifter) and CS (using Singularity) series supercomputers, on a local Kubernetes cluster, and on the cloud. Newly developed interfaces for Python, Dask and PySpark enable the use of Alchemist with additional data analysis frameworks. We also briefly discuss the combination of Alchemist with RLlib, an increasingly popular library for reinforcement learning, and consider the benefits of leveraging HPC simulations in reinforcement learning. Finally, since data transfer between the client applications and Alchemist are the main overhead Alchemist encounters, we give a qualitative assessment of these transfer times with respect to different factors.

Several recent developments have enabled more practitioners to use Alchemist to easily access HPC libraries from data analysis frameworks such as Spark, Dask and PySpark, or from single-process Python applications. The availability of Docker and other containers enables users to get started with Alchemist quickly, and we briefly discussed the potentially exciting combination of Alchemist with reinforcement learning frameworks such as RLlib. Alchemist’s main overhead comes from the data transfer between client applications and Alchemist, and we ran some experiments to better understand the behaviour of these transfer times with respect to message buffer sizes, matrix layouts, and network variability"