What is the approximate storage capacity available in the world?

If we consider all chargeable devices, that ranges from mobile phones, laptops, electric vehicles, medium storage (example. fly wheel), large storage (hydro storage + compressed air), etc. What is...

02 March 2018 6,323 5 View

How to represent 3D and 4D data in Matlab?

I have two functions; the first is Z=f(x1,x2,x3), and W=f(x1,x2,x3,x4), where x1,x2, x3, and x4 are vectors. Z is three dimension matrix and W is four dimension matrix, what are the possible ways...

01 February 2018 8,108 2 View

What are the fastest IEEE Transactions or high impact factor journals specialized in power and energy?

I would like to know what are the high impact factor journals specialized in the power and energy systems and have very short processing time.

31 December 2017 7,748 14 View

Is the technology destroying our innovation?

When you read an article which was written in 1980s or even in the early 1990s, you usually found that the authors cite no more than 10 references (sometimes no references at all). In 2017 when...

10 November 2017 3,007 18 View

What is the percentage of the DC electric loads?

The number of consumer electronics has increased considerably specially in residential buildings, I would like to know What is the percentage of the DC electric loads? or any research papers...

09 October 2017 9,575 8 View

How could the independent researchers pay for conference and journal fees?

Journal fees.

08 September 2017 8,877 26 View

When writing a book which is preferable?

When writing a book which is better: (1) Write and finish your book completely then submit it to a publisher, or (2) Write the summary and the chapters contents then look for a publisher?

08 September 2017 4,675 5 View

How to make an extensive literature review?

In order to do a good research you must know deeply what have been done in a specific research area. For example in electrical engineering you have to search in IEEE, Science direct and Google....

08 September 2017 5,625 5 View

Is the time really an independent variable?

In all our systems in engineering and science we represent the time as our independent variable, that is x(t). Then we use the great theorems of Lapalace, Fourier, and Lyapunov to analyze and...

08 September 2017 4,737 94 View

Is the multiplication of positive definite and negative definite matrix is a positive definite matrix?

Is the multiplication of positive definite and negative definite matrix is a positive definite matrix even if they do not commute.

08 September 2017 2,290 9 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

What is the most Operating System (OS) which can be INSTALL on Tiny hard devices like Raspberry Pi (RPi) hardware ?

I'm targeting to deploy a mesh network and manually configure MANET routing protocols. I'm preparing scenarios, architectures, and hard devices needed to do that. Are there some step-by-step...

03 March 2021 1,931 5 View

How can the use of Jolly Phonics improves the quality of reading, speaking and writing in rural disadvantaged communities in Papua New Guinea?

Jolly Phonics reading program is an effective way to teach early reading to young learners. How can lectures at the university prepare early childhood student teachers to teach Jolly Phonics to...

03 March 2021 3,731 3 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'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