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

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 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

How to calculate BREQ 3 questionnaire?

how to calculate BEHAVIOURAL REGULATION IN EXERCISE QUESTIONNAIRE BREQ 3 ,which contain 24 questions and each question has 5 answers (0- Strongly disagree , 1-disagree, 2- Neither agree nor...

02 March 2021 811 3 View