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

Is it possible to find free GIS software from internet?

Hello Is it possible to find free GIS software (introductory level) from internet? If so, could you please suggest a web site to download? Thanks in advance. Muharrem Keskin

28 October 2020 4,726 19 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

How to Interpret Red Edge Data in UAV Remote Sensing?

Hello. Could you please share your experience on the interpretation of red edge data in UAV remote sensing. We recently used a drone with a camera with green, red, NIR, red edge and RGB...

20 September 2017 2,163 7 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

Does flowing lava generate an electromagnetic field?

I am trying to understand if the flow of molten, iron-rich fluid (like lava flowing through a tube) can be related to the magnetism of earth, generated by convection in the core. In other words,...

16 October 2019 8,726 7 View

Does flowing lava generate an electromagnetic field?

I am trying to understand if the flow of molten, iron-rich fluid (like lava flowing through a tube) can be related to the magnetism of earth, generated by convection in the core. In other words,...

09 October 2019 5,138 8 View

Is it possible to detect the magnetic anomaly associated with the current generated by lava fluid flow?

I am trying to understand, as lava flows through a tube does it create an electromagnetic field? At what point within the walls of the tube does the isotherm of the currie temperature exist and at...

09 October 2019 3,792 3 View

Weathering rates of basalt dust vs. amorphous basalt fibers?

Hi all, The use of basalt rock-dust has been shown to benefit highly degraded tropical soils through remineralisation, however research into its use as a slow-release, sustainable fertilizer in...

05 June 2019 7,557 3 View

How to remove secondary minerals from vesicular basalts?

I have some selected samples with basaltic in composition and vesicular texture. All of the primary constituents are fresh, and they don't have any alteration in thin sections. However, their...

05 June 2019 416 4 View

For laser Initiation of energetic materials, how to measure the function time?

For laser Initiation of energetic materials, how to measure the function time as the sum of the ignition delay time (time from beginning irradiation to beginning of decomposition) and the...

16 December 2018 9,445 3 View

For laser Initiation of energetic materials, how to measure the function time?

For laser Initiation of energetic materials, how to measure the function time as the sum of the ignition delay time (time from beginning irradiation to beginning of decomposition) and the...

11 December 2018 6,741 4 View

What is the adventure of this rock (Scoria) formation ?

These samples were collected from hot water sources,a region close to the thermal facilities and slopes of an extinct volcano mountain.

03 April 2017 6,450 0 View

Can the Sauter mena be used to estimate the surface area of a sample of particles?

I am wondering if the Sauter mean can be used to estimate the surface area of a sample pf volcanic ash that I am analysing? I know that the result will be reasonably arbitrary but, for what I am...

02 March 2017 2,164 2 View

Who has defined the term volcano-sedimentary and referred to?

01 February 2017 5,989 1 View