How to compare a group + 2 of its subgroups via statistics analysis?

I have a dataset containing [length of time in DAYS] and [name of drug]. The days go from 1 to 42, and there are about 25 drugs. The majority of the data is for 3 days or less. The dataset is...

02 October 2020 5,274 2 View

Is there a reference on the idea of a price premium for a reliable product is worth the price?

Hi all, I'm looking for a reference or two that may support the idea that a reliable product is likely to command a price premium in the market. This is accepted by the market because a...

02 October 2020 4,863 2 View

Why not merge economics and engineering?

The framework of economics today draws largely from post-War scholarship. And here, we remember the use of biomathematics by Paul Samuelson and contemporaries of the sixties and seventies. Now,...

20 April 2020 4,923 14 View

Sucking mass away does not please coronavirus?

Formentera island had been through early self-quarantine, port closed, for 14 days and there is still no Covid19 cases in the island. Formentera is a weird Earthian gravitationnal aberration (as...

26 March 2020 1,157 2 View

As a polyglot invalid 65%, I feel more armed to face myself in confinement. Do you agree at least dairy 15mn meditation emptying mind is necessary?

As a polyglot invalid 65%, I feel more armed to face myself in confinement. I know how I can help friends and neighbors. It's time to bury all war axes. The real time for a better world.

14 March 2020 1,663 6 View

Mathematics: Why ignore Ishango?

07 March 2020 4,472 7 View

Geometry released algebra. Must conics release cubics?

Hark back 11th century, we find algebra shackled by geometry. So, there was no honour in the negative number. When algebra was released, it opened a new world for us. Before then, geometry had...

06 March 2020 2,660 4 View

Can free glutamate ions turn dangerous?

can a non-human virus step on them, using those unbound particles, easier to conquest, to invade the host ? Glutamate only taste when unbound....

17 February 2020 5,423 10 View

Public policy: Where are the big three equations (heat, wave and Laplace)?

Distribution dominates policy. Resources are injected at a point and distribute across communities. Can the distribution be almost instantaneous as in the heat equation? Do the resources morph and...

30 January 2020 3,439 2 View

Why can't we get the energy from lightnings, during storms?

We know how to attract them, how to drive them to the ground, why can't we store them? Batteries are too weak to hold it on? A too big diode should be needed to transform it in electricity?

25 November 2018 1,929 4 View

How to define and get results (stresses) for certain points of a model in abaqus, using python? When the size of the model changes?

I want to do a parameter study of a aixsymmetric cylinder in Abaqus. I want to create several jobs where I get the stresses for 3 different points in my model. These points are defined. I wrote a...

01 March 2021 10,078 1 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

Which one is easier and better at modeling slender masonry structures? ANSYS or ABAQUS?

I need to model masonry and reinforced concrete minarets for my MSc thesis. Which one is easier and better at modeling slender masonry structures? ANSYS or ABAQUS? (Or any other program for just...

01 March 2021 736 3 View

Which cell line should we use to perform biological dosimetry experiments?

We are preparing some experiments based on irradiating cells under different conditions in order to evaluate the effects in terms of DNA damage, genetic expression, etc. As our project is...

01 March 2021 3,355 3 View

How to assign different material properties to each element in Abaqus ?

Hello, I am writing a python script to generate my model and write the input file. The problem is I have 1000 elements in my mesh and I want to assign different material properties to each...

01 March 2021 9,511 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

How to modify Johnson cook equation in ABAQUS?

I wanted to add an extra parameter to the existing Johnson cook equation in the ABAQUS simulation. How to add those extra parameters. Ref: A modified Johnson-Cook material model with strain...

28 February 2021 4,841 3 View

For modelling epoxy-based matrices (in composites), which model in ABAQUS is the most suitable, Concrete damaged plasticity or Drucker-Prager model?

I am working on developing a micromechanical FE model for predicting kink-band formation in UD composites. To model matrix plasticity, which model, out of Concrete Damaged Plasticity and...

28 February 2021 5,415 1 View

How to find the right number of integration points in second order 3d finite elements?

I am familiar with finite element simulations and numerical schemes like the Gauss Legendre quadrature. I also know that the Gauss integration yields exact values for polynomials up to degree 2n-1...

27 February 2021 6,818 3 View

B-mercaptoethanol (BME) protocol?

Hi everybody, I have been running a multiplex IHC which allow me to stain the same tissue with different markers (Primary Ab + Secondary conjugated Ab) (AF487, AF555, AF647). Since I would like to...

27 February 2021 5,028 2 View