How to estimate total kinetic energy with an accelerometer?

Hi everyone. There's a MEMS sensor which has an accelerometer giving tri-axial angular velocity and linear acceleration. I wanted to measure the total kinetic energy which has 2 parts:...

09 October 2018 5,764 5 View

Can anyone share idea on excess pore water pressure estimation during dam construction?

Dear researchers/engineers I was reviewing a report of a dam monitoring during construction. considering a specific piezometer, it is installed at time t1 and elevation z1. but the casing datum is...

06 July 2018 2,024 3 View

Could you suggest literature or standards for hydraulic design of tunnels/conduits through embankment dams?

Dear all, assume we need to know what is the allowable velocity through the diversion tunnel which would not harm the concrete lining of the tunnel. and think of a gated tunnel (sluice gates in...

04 May 2018 9,032 2 View

Could anyone guide me with undistorting images and particle tracking?

I have captured frames of a video. A video of a particle moves through a flume. I wanted first to undistort it but I didn't capture calibration images. I just know some measures, for example the...

11 December 2016 8,474 18 View

How to derive acceleration from MEMS sensor outputs?

We used a sensor in a pebble that when it moves we could have acceleration statistics. but the outputs are labeled with some titles which I'm not sure how I can use them to produce a graph (time...

10 November 2016 7,368 5 View

How to implement selection algorithms like Self-Organizing Map to split input data to specific subsets?

03 April 2016 5,548 4 View

How can I plot an X-Y plot with a colored valued? (Colormap plot)

Dear researchers, I wanted to show how different values of parameters in a model change the error of a result. for example I want to plot an X-Y figure with parameters 'a' in x-axis and 'b' in...

11 December 2015 8,650 6 View

What is the problem with epsilon=0 in regression problems with Support Vector Regression?

In most of my study I found out epsilon=0 is getting a better results among other epsilons. As epsilon=0 means all vectors are slack variables which needs to be minimized (SVR), why not using...

02 March 2015 332 5 View

Is it possible to solve a PDE with elemental boundary conditions with Finite Difference Method?

If we have a problem which its boundaries or the the condition of solution is some panels or elements not grids, which must be confirmed. Is there a way to solve it numerically with FDM?

10 November 2014 3,345 7 View

How to implement Linear Genetic Programming.

Anyone can recommend any software or codes to implement linear genetic programming? Thanks in advance.

08 September 2014 9,449 5 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

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

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