How can I fix the floating node error in pspice?

I have a very large circuit and when I try to run a transient analysis of my circuit, there are so many floating node errors, this is the picture of a part of my circuit...

31 December 2020 6,053 5 View

Available datasets for occupational skin diseases?

Hi, is there any dataset about occupational skin diseases (especially skin cancers) that contains skin lesions images (simple or dermoscopic or histologic) ,integrated with clinical data and...

10 October 2020 3,301 4 View

The characteristic length of a vertical sinusoidal wall with natural convection?

What is the characteristic length of a vertical sinusoidal wall with natural convection to calculate Rayleigh number? (x represents characteristic length in the attached formula)

21 September 2020 8,736 5 View

systematic review and meta analysis?

I want to do a systematic review and meta-analysis on certain topic. when I looked into available articles it is too less. at least how many should I have to do so? Thanks!

22 June 2020 2,807 5 View

Is it logical to divide the output into a constant and then design sliding mode controller based on mapped output?

23 March 2020 8,000 3 View

How can I start the simulation of esd effects on satellite solar panels? I'm looking for a start point for esd simulations by softwares likeCST,Hfss?

In all the papers the esd test model consists of a vaccum chamber in which samples exist. There is a plasma simulator or electron gun that simulates the space condition. these induce the esd on...

20 March 2020 5,938 3 View

Numerical Modelling of Natural Convection using Comsol: 2-Step solution or 1-step?

I am modelling air natural convection in a vertical channel with open boundary end by means of Comsol Multiphyscis. I am interested in the stationary solution. There are two different approaches...

03 March 2020 5,686 7 View

Which CFD software to use for a rough simulation?

Hi I'm a beginner in CFD simulations. I have a complex geometry and I want to approximately visualize the airflow passing through this geometry. I don't need the simulation to be fully accurate,...

01 March 2020 3,337 20 View

Writing specific contact surface behaviour using Userinter.F in ANSYS?

Hello, Is there anybody who has experience developing any user subroutine using Userinter.F for contact simulations in ANSYS? Any advise and example would be appreciated highly. thanks a lot

21 February 2020 6,495 1 View

How to interpret impedance spectroscopy Nyquist plot?

Dear academicians! I measured impedance spectroscopy for a solid electrolyte to study its bulk, grain and grain boundary ionic conductivity. But I am confused how to identify the bulk resistance...

29 July 2019 677 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

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 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

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View