Can accelerometer based wearable motion sensors be used to detect motion of fingers or a flex sensor is best suited for this?

I want to detect relative movement between fingers with wearable sensors. Which could be an appropriate technology for this?

31 December 2018 2,443 3 View

Can someone suggest me good book dealing with simulation of optoelectronic devices?

I am looking for a book to learn simulation of mostly semiconductor optoelectronic devices.

09 October 2018 351 0 View

What are practically achievable range and data rate for LoRa, SigFox and other IoT technologies?

If anyone has tested these IoT technologies in outdoor environment, could you please help me with max range and data rate that is actually achievable? I feel there is lot of difference between...

04 May 2018 1,299 0 View

What is the most suitable transceiver module for line of sight wireless transmission in 10 kms range?

I want a wireless transceiver module for remote sensing application with range about 10km. Xbee would not be sufficient. Can anyone suggest an alternative?

03 April 2018 5,651 10 View

What is the physical significance of 'k' in a E-k diagram of a semiconductor?

What does 'k' refers to in a E-k diagram ? Is it a wavevector or something else?

01 February 2016 702 10 View

Is there any way other than "fft" to find the frequency content of a signal in Matlab?

I have complex values of a periodic signal which is clearly visible in time domain. But I want to find its frequency content ? FFT is not working with me and I am looking for alternate ways to...

11 December 2015 9,192 20 View

Can anyone suggest some good papers or books to study Optical Waveguide Analysis?

I want to learn optical waveguide analysis using methods such as FD, FDTD, BPM and EIM, but I am not sure how and where to start ? Any guidance will be helpful.

09 October 2015 285 11 View

How can the random noise sources like Angle Random Walk in a semiconductor gyroscope be theoretically calculated?

Is it possible to theoretically predict the magnitude of random errors in semiconductor ring laser gyros?

08 September 2015 6,951 0 View

Can someone suggest me a good tool for simulating Semiconductor Ring Lasers?

I want to simulate both integrated and bulk fiber-optic semiconductor ring laser. Which of the tools e.g. Lumerical, Comsol, OptiFDTD will be most useful to me?

08 September 2015 4,701 1 View

What is the beam area of a laser wave and how to calculate it?

How do I find out the beam area of a light wave?

05 June 2015 2,785 0 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

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

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

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 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