How to derive equations for a resonant buck converter with ZVS?

I am not understanding how each author is deriving the equations and the working principle. Individual authors are giving their own working principle explanation for different circuit topology....

12 February 2021 496 1 View

Crystallinity index measurement of Cellulose nanocrystals ??

How to find the crystallinity index of cellulose nanocrystals using XRD peaks. Can anyone suggest the most appropriate method of finding CI

28 December 2020 7,809 4 View

Does anyone knows any technique to find the location of an object in an image?

We are doing a project in which we are detecting (using YOLOv4) runway debris using a fixed camera mounted at a pole on the side of the runway. We want to find out the position of the object with...

03 December 2020 774 6 View

Hi; I need some MRI or CT scan pictures of the human brain. Can anyone suggest me any good website for finding these files?

need a human brain MRI/CT scan image dataset for research purposes.

08 November 2020 2,145 2 View

I am having problem with my Hplc chromatogram. The base line has shifted downward and its nt coming to zero. I am looking for problem and solution ?

A few days ago i eluted a sample with standard (Tartaric Acid ) for which mobile phase 0.05 M Phosphoric acid, MeoH and water ( 69:1:30) were used. After analysis the base line (Uv/Visible 254 and...

03 November 2020 9,893 3 View

Does Google's terms and conditions allow collecting and analysing user reviews for research?

I am planning to conduct research that involves analysing app reviews from Google's play store. From the hundreds of papers published on then analysis of app reviews, I am assuming collecting and...

29 September 2020 5,543 3 View

Is thematic analysis an individual analysis technique for qualitative research or comes under any of the 5 approaches to Qual Research??

is thematic analysis an individual analysis technique or it falls under grounded theory (As some literature says) or it is merely a technique that can be used under any of the 5 common approaches...

30 August 2020 1,916 11 View

What Object Detection Technique is best for FOD detection on Runways?

We are working on an Automated Foreign Object Detection on Runway (FYP Project). It is a system to detect the FODs (Foreign Object Debris) on the surface of Runways. It also detects other...

12 July 2020 4,550 1 View

Difference between decentralized and distributed networks?

As much as I read about decentralized and distributed networks, it becomes more and more difficult to make a clear cut distinction between the two. Kindly, help by providing a clear distinction...

26 March 2020 9,174 3 View

Models for character recognition?

I have a set of digital images that contain computer printed text in different formats. Kindly suggest three to four machine learning models (preferrably with url) that can recognize the text from...

04 March 2020 4,583 3 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

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

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 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

Which of the Covid-19 Vaccines would elicit the best immunoprotection and why?

I want to know which of the available Covid-19 Vaccines would elicit the best immunological response and why

02 March 2021 1,388 3 View

Do you know any MR image dataset?

I would like to research on MR images (0.5T and 3T). Can you please suggest some websites that I can download dataset including both 0.5T and 3T MR images? Thank you.

02 March 2021 7,735 3 View