What are the inconveniences of a linear quadratic regulator (LQR) used in seismic vibration control ?

Dear colleagues, greeting I'm working on a new type of controller that can substitute the classical controllers such as LQR (linear quadratic regulator). Hence, I want to know more about the...

02 March 2018 3,264 7 View

Dose the lost of exclusivitiy of information affected the motivation of the teachers ?

Greeting, I'm asking this general question for teachers and professors in all fields. With the advances of technologies and communication technics the exclusivity of the scientific information...

01 February 2018 968 12 View

What is the fault type of Christchurch, New-Zeland (2011) earthquake ?

Greeting to all researchers; I'm using a set of a near-fault, far-fault earthquakes in a study, and I want to use the Christchurch earthquake record. However, I'm confused about the fault nature...

11 December 2017 6,408 5 View

How to design a base isolator for a share frame structure ?

Dear researchers; I'm working on modelling a share frame structure in MATLAB the only parameters I have are: mass, stiffness and damping. and I want to design a base isolator for this kind of...

31 December 2016 8,816 4 View

How to verify the results in a numerical study ?

03 April 2016 2,095 4 View

Why some researchers try to monopolise the science ?

Dear researchers; I've seen a lot of research scholar complaining about getting their work rejected by some reviewers, just because those researchers don't want some else to publish in their...

31 December 2015 9,909 4 View

What is the difference between corrected and uncorrected earthquake ?

Dear researchers; What is the difference between corrected and uncorrected earthquakes ? Warm regards.

31 December 2015 5,686 0 View

How to write a 3D building motion equation ? and how to solve it in state space ?

11 December 2015 655 9 View

How do I apply harmonic loading to a 2 storey building frame in ANSYS or ABAQUS?

dear researchers I want to apply harmonic sine load to 2 story building frame. Building is going to model in Ansys/Abaqus and this for time history analysis of the structure. also suggest which...

11 December 2015 2,802 5 View

Do you have any software for Semi-active control device modeling?

Dear researchers ; Does anyone knows a good software for modeling and controling semi-active devices, such MR damper, ER damper, STMD? Kind regards

03 April 2015 8,158 10 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

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

What techniques can I use to determine the miscibility of polymer blends?

The term miscibility refers to the single-phase state in thermodynamics. I do not mean the compatibility of different components. To determine the miscibility I know several techniques such as...

03 March 2021 4,107 4 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View

Shall I skip the measurement model in SmartPLS?

Hello everyone, I had run a mediation model in SmartPLS using questionnaires that were already validated among my statistical population. A professor who edited my paper -though she is not...

01 March 2021 3,052 3 View

What is involved in morphological changes of SEM images of a substance?

In the sem analysis of CaCO3 nanaoparticles, the morphology images showed spherical shaped particles but the proposed morphology for these type of nanoparticles is trigonal. I prepared the...

01 March 2021 1,960 4 View

I have designed reflectarray element and feeding it though Horn Antenna on HFSS. After full wave simulation, I am not getting desired results?

I have designed reflectarray element to generate OAM beams at 5.8GHz and feeding it though Horn Antenna on HFSS. After full wave simulation, i am not getting desired results i.e Radiation pattern...

01 March 2021 9,701 5 View

Joint behaviour in Abaqus is not captured well?

I am working on roof joint and trying to simulate the behaviour in Abaqus. I am successful in running the model but the final graph does not follow the experimental curve in the negative direction...

01 March 2021 6,661 3 View

How to define tie constraint between rigid body and another part in dynamic explicit model of Abaqus?

Hi dear researchers I connected a rigid body into the part of my structure by tie constraint and then I added displacement to rigid body, in static general step every thing is fine and these two...

28 February 2021 3,442 2 View

Does the circuit modeling for planar monopole antennas using Foster canonical forms give good approximation?

Hi researchers, I am searching for some accurate way to do the circuit modeling of planar CPW-fed monopole antennas. I have gone through the literature where mostly circuit modeling is done using...

28 February 2021 7,016 1 View