Can anyone suggest a method to simulate the wind from velocity spectrum?

03 April 2015 1,051 3 View

What is the difference between tlcd and mrtlcd in its formulation?

when we use equivalent linearization technique , we are putting the damping ratio part of tlcd/mrtlcd as Sid.. since the damping ratio(Sid) can range only from 1-100%, for a particular frequency...

03 April 2015 4,792 0 View

In fft function in matlab,how can we change the increment value of n and to start n from 0???

in fft function in matlab, For length N input vector x, the DFT is a length N vector X, with elements N X(k) = sum x(n)*exp(-j*2*pi*(k-1)*(n-1)/N), 1

01 February 2015 1,992 2 View

How can I get the Rotatonally sampled spectrum?

01 February 2015 7,509 1 View

Can anyone help to derive stiffness matrix considering only translational (UX) for vertical tower?

I have a hollow tapered vertical tower..I have developed stiffness matrix considering translational and rotational using the function defined in BATHE's book..but, since I need to use tuned liquid...

08 September 2014 4,894 2 View

Is mass moment of inertia to be considered in lumped mass?

07 August 2014 2,748 1 View

Optimising tuned liquid column damper?

How can we optimise the parameters in a tuned liquid column damper for an mdof system? I have developed the psdf of windecitation force. How can I find rms value?

07 August 2014 9,938 4 View

How can I find a damping matrix?

I have developed a mass and stiffnes matrix for my problem..natural frequency and modeshapes are also calculated..damping ratio is given..how can i develop damping matrix? Which equation should I...

06 July 2014 5,959 7 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

Heat exchanger with liquid Nitrogen as coolant?

I want to cool Natural Gas from 195 Kelvin to 138 Klevin in a heat exchanger by using liquid nitrogen as the coolant medium. When entering the heat exchanger, the liquid nitrogen will have a...

01 March 2021 6,450 5 View

High aspect ratio hexahedral mesh optimization solver?

I am interested in evaluating mesh optimization solvers that converge to high aspect ratio unstructured hexahedral grids. In other words, I am interested in a solver that optimizes warpage,...

26 February 2021 7,279 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

How to get/count refractive index in gasses?

20 February 2021 8,202 6 View

Is an issue for serial correlation when it is not found with the xtreg, fe on its lag ,but the lag become significant when you've vce(robust) std. er?

Dear Sir/Madam I have a dateset that suffers from heteroskedasticity and serial correlation. To address the serial correlation lag my variables of the fixed effect regression. I retrieve the...

15 February 2021 3,700 1 View

Is Genetic Algorithm usage for Motor Conception FEA optimization a good choice?

Hi RG community, Like the title shows ,i was wondering if choosing the GA for this kind of Optimizaiton is a good choice? For example we have a population of 100 (for 7-8 Optimization Variables),...

14 February 2021 1,160 7 View

How to estimate/know plant virus concentration to make a standard curve in ELISA after serial dilution?

Hello, I am trying to know tomato virus titer/concentration in samples and I will perform serial dilution of the positive control. I wanted to ask How to estimate/know plant virus concentration to...

13 February 2021 6,534 4 View

How to best represent qPCR DD Ct or D Ct as a box plot?

I've been reading up on how to best represent qPCR data, specially on answers given on this site by Dr. Jochen Wilhelm. I understand box plots are the way to go, but I still don't understand them...

11 February 2021 7,228 3 View

How to make Fast Green FCF from powder?

Hi everyone We need Fast Green to electroporate plasmid into mice embryos, therefore we simply need it to see some color in the liquid we are electroporating so that electroporation is more...

07 February 2021 1,671 2 View