Solution of 2D convection diffusion heat equation using MATLAB ?

This is a polymer heating problem. Polymer enters at around 180C (x=0) in the barrel. Also barrel initial temperature is 180 (t=0). Some heat Is added along whole length of barrel q. We have to...

15 February 2021 3,887 1 View

Paper about future and challenges of batteires?

I am looking for a recent paper that describes the challenges facing batteries' progress and all about the future of batteries.

11 January 2021 1,809 1 View

Who to create single SPSS data sheet for different measures by two different populations??

I am working on Effect of parents personality patterns on adolescents, I have collected data from parents and adolescents by using different scales on both population. Now I have to create SPSS...

26 December 2020 7,238 3 View

Why is light pure energy?

light is pure because the light is the simplest electromagnetic construct but the energy of any object is also of the same kind.

20 December 2020 207 4 View

Can we design a solar cell with undoped c-si ?

i would like to realize a solar cell made of : SiO2 as a protective layer and ITO as an ARC, undoped c-Si as an active material, and Ag as back reflector, can I use undoped c-Si as an active...

21 September 2020 2,687 4 View

How to make a numerical study about solar cells gratings?

I am looking for a free software for students or generally make free to make a numerical study which means to simulate solar cells gratings in order to enhance solar cell efficiency by light...

08 September 2020 4,032 3 View

What can we call this type of surface morphology formed in Cu2O at high laser power during the SLM process?

A kind of surface roughness is produced by the application of laser energy density at high laser power (> 140W) which looks like an open porous structure. This kind of structure is not observed...

18 August 2020 9,835 4 View

How to simulate plasmonic solar cells with silvaco?

i would like to simulate thin film palsmonic solar cells with silvaco TCAD, but i couldn't define nanoparticles and put them over the solar cells surface.

14 August 2020 9,842 5 View

Dear friends I'm looking for help in my research, would please suggest some solutions?

I'm doing a study on the effect of job stress on job performance of police officers in Iraq and i need a good scale to measure the job performance.suggestion for the development of my work or...

02 August 2020 9,001 3 View

Other ways to check DNA quality? How long can I store human stool samples?

Due to the pandemic, I can't go back to my university to conduct experiments. I have my stool samples and extraction kit with me in a smaller laboratory however they don't have the equipment I...

07 July 2020 5,172 1 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

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 3 View

Is there a deep reason for using the squared modulus of the wave function as the probability density of the existence of the particle?

I think we were all surprised at the first time we got to know quantum mechanics that the squared modulus of the wave function is the probability density of the existence of the particle? The role...

28 February 2021 6,282 9 View

What is Flat Lens Antenna?

28 February 2021 5,433 3 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 View

What are the application of Fixed points thoery in Chemistry.?

It is said that fixed point theory has lot of applications not in the field of mathematics only but also in various areas. So I am looking for applications in Chemistry only..

26 February 2021 3,533 1 View

Why do the air flow results vary totally when adding scalar in CFD ?

Dear All, We are using Autodesk cfd to calculate the air flow in a single sided naturally ventilated room, where air flow depends only on buoyancy due to temperature difference between inside and...

25 February 2021 9,602 4 View

Please. Could you help be in implementing Fractal Discrete Cosine Transform algorithm in Matlab?

I do need the Matlab code of Fractal Discrete Cosine Transform (FDCT). Can anyone who has already implement this code, help me with the implementation of this transform?

24 February 2021 5,602 2 View

How to interpolate from a time-series database ?

Hi, I am having trouble with a problem, in the field of Optimal Control and the generation of optimal time-series. Let's consider a system, whose dynamics are represented by dx/dt =...

24 February 2021 9,105 2 View