What is the complexity of a linear convex optimization ?

10 November 2015 6,767 3 View

Apart from raptor and LT codes, what are the new generations of fountains codes?

09 October 2015 9,498 1 View

Regarding LDPC codes, what is the difference between message passing, beleif propagation, min-sum, bit flipping algorithms ?

LDPC decoders

09 October 2015 2,349 0 View

Apart from decoding complexity, is there any advantage in using fountain codes over random linear network coding on a line and non-mesh network ?

assume that the decoding complexity is not an issue.

09 October 2015 2,837 1 View

Examples of implementation of cooperative coding or network coding in the norms and standards.

cooperative coding and network coding

09 October 2015 5,336 0 View

Apart from decoding complexity, is there any advantage in using fountain codes over random linear network coding on a line and non-mesh network ?

assume that the decoding complexity is not an issue

09 October 2015 9,058 2 View

What are the methods of encoding LDPC codes ?

without calculating the matrix G.

08 September 2015 678 5 View

Why permutation codes were not retained for the NB PLC standards ?

permutation codes are good for criss-cross error correction

08 September 2015 8,133 0 View

Could I have the exact definition of a PHY layer frame ?

Are the frames over the physical layer processed completely independently?

08 September 2015 6,145 1 View

What is the definition of a cycle for an LDPC code ?

LPDC codes

08 September 2015 1,284 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

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 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

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

Could you recommend any books about Number Theory?

Beginner level books. High level books. Analytical Number Theory. Algebraic Number Theory. Combinatorical Number Theory. Books about partitions. Books about primes.

03 March 2021 7,174 5 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