What are the applicable reinforcement learning based control methods for systems that have control delay?

I am studying the experimental application of reinforcement learning (RL) based control methods. For that reason, I modeled a nonlinear system without delay and trained the RL agent. In this...

02 February 2021 7,999 3 View

What is the relationship between Covid-19 and the level of democracy?

In the disaster management literature, it is suggested that there is a relationship between disaster-related deaths and the democracy level of countries. According to this view, disaster-related...

16 March 2020 2,154 45 View

How can we estimate the urinary volume by dosing the urinary creatinine level ?

In order to estimate the urinary 6-sulfatoxymelatonin concentration (ng/h) in children, we collected urinary samples for 24 hours. However, for some of the children, the volume of urine was not...

12 March 2020 5,204 3 View

What is the maximum/suitable number of categories of target variable in multi-label classification?

I have a dataset which consists of one text column (it is related to nlp), four categorical columns as features and one target column which has almost 90.000 categories. Also, the dataset has...

11 March 2020 9,845 11 View

What are the main differences between case study and phenomenological study?

What are your thoughts on this? Do you think that the researchers sometimes mix these two play methods and use them interchangeably? Does it make sense for you to think that there should be a...

25 January 2020 4,692 6 View

No bands for positive sample in rt-pcr?

I am trying detect a rna virus in stool samples. To extract the rna, I have been using qiagen viral rna extraction kit. From cultured viruses I had good results but all stool samples came out to...

27 July 2018 2,778 3 View

DNA extraction in Euphorbia milii?

The samples we have are from leaves but dried completely at dark and in closed room. We have followed several extraction steps that included kit, kit with PVP and CTAB. However, the thing that we...

17 August 2016 9,109 2 View

Why am I getting Baseline noise in HPLC?

Dear colleagues, I am analyzing reducing sugar content of several breeding lines of potato in HPLC. The mobile phase I am using is 80:20 acetonitrile:water and I sonicate it for 5 min to get rid...

06 March 2016 7,089 2 View

In which conditions exactly do primer dimers occur?

The primers we are using are also the ones validated in several studies and PCR condition is very specific (touchdown). Thanks for your time.

08 June 2015 6,008 12 View

Does anybody have any data on market research for terminal operating system (TOS) software?

16 May 2015 2,053 1 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

Any specific pipeline or parameter to analyse total transcriptomics study of brain tissue samples?

I have two groups of brain samples, control and treated for example. It was total RNA nova seq sequencing. I tried all the available pipeline like: star+rsem+deseq2, Hista+stringtie+cuffdiff,...

27 February 2021 356 6 View

What are the application of Fixed points thoery in Chemistry.?

It is said that fixed point theory has lot of applications not in the field of mathematics only but also in various areas. So I am looking for applications in Chemistry only..

26 February 2021 3,533 1 View

Can I ask did any good platform or journals for learning the calcluation on the reference governors and command governor?

Recently I face some problems with the mathematical ( calculation) on the reference governor and command governor, so I need some help from you all to get which platform or journal can let me...

23 February 2021 7,746 2 View

Special issue on PLS-SEM in Mathematics. Are you interested?

21 February 2021 5,601 3 View

What is the better software for approximation of 3D surface with equations?

I have a massive of x, y, z coordinates of 2D surface in 3D space, which builded in Ansys HFSS or AutoCAD. How can I get the analitical aproximation of this surface by formulas?

21 February 2021 3,444 7 View

How can I obtain a sine function along a path with known equation?

I have a symmetric airfoil with known equation. Now a sine function passes along the airfoil equation like following figure. I want to find the sine function in (x,y) coordinate system.

17 February 2021 1,594 12 View

How to combine two geometries in LAMMPS ?

I am trying to simulate contact angle of water on a quartz slab using LAMMPS. I have created and equilibriated the quartz slab and the water cluster separately. Now I want to create a composite...

17 February 2021 5,884 2 View

Does learning mathematics exclusively improve cognitive abilities?

Teaching Mathematics at school to all students is commonly justified by the opinion that it improves their problem-solving skills and "makes them smarter" (whichever measure is implied by this). I...

15 February 2021 7,391 7 View

Can we help fellow mathematicians get free ?

https://terrytao.wordpress.com/2021/02/08/a-statement-from-mathematics-department-faculty-at-stanford-and-mit/ Terry Tao blogged about this unfortunate event. Kindly share among Mathematical...

08 February 2021 1,055 3 View