Models Definition and 369 Threads

It is possible to run any of these hurricane models on a home desktop? If so, does anyone know where I can get information on the models? Can I download the model/source code/program itself? Will I need a data feed from the national weather service?

I understand that there are a couple of statistical models out there that describe physical systems. One I know is Fermi-Dirac statistics. What are the other models, what are their key features and when are they applied? When working with a system, how can you be sure you should be using this...

On a page such as this, from Bahcall's website, you can get links to the input parameters, and the publications describing the progressive refinements to the various standard solar models. And http://www.ap.stmarys.ca/~guenther/Level01/solar/solar_history.html will give you a thumbnail...

Where I can find more about models of atom? I need a name of site for example….

SpaceTiger has created a very valuable thread on Mainstream Cosmology. For good scientific practice it is important to compare standard theories with testable alternatives, however ST's thread is not the place to do it. The theory of Self Creation Cosmology (SCC) presents itself as such a...

You all know how perfect pictures of super-models are and how they get a little tweaked before going to print. But did you know how much tweaked? http://homepage.mac.com/gapodaca/digital/bikini/index.html Pretty nasty.

Hi, I have a question regarding natural growth and logistic models. According to my textbook, any exponential equations, P(t) = e^kt can be expressed logistically as P(t) = K/(1 + Ae^-kt) where A = (K-P0)/P0. When I applied this rule to P(t) = e ^0.0015t, and P(t) = 6000 / (1 + 5e^-0.0015t) it...

Look around you. Everyday objects, linked together. How? By mathematics. Not a simple design, but a complex wonderful array of chaos models called fractals. These "fractals" are ever changing, always on the brink of a different state. Does this sound like math? Believe it or not, all of the...

The cosmological models of Lemaitre-Tolman-Bondi describe spherically symmetric universes with isotropic but inhomogeneous space, i.e. there are concentric shells with different mean mass densities. The LTB line element is: ds^2 = -dt^2 + \frac{(R'(t, r))^2}{1+2E(r) r^2}dr^2 + R^2(t...

What do you see as the best explanations for validity of non-local & gradient constitutive models (considering metal plasticity and damage)? On many occations they naturally work much better than traditional models, but I'm looking for other directly physical phenomena based information, not...

I am trying to get a basic understanding of the physics of the interstellar medium and the current models which describe it (FGH and McKee-Ostriker). A first question arises regarding the possible assumption of a gas in ionization equilibrium, in which ionizarion and recombination occur at...

I have a lab practical coming up and they use models a lot on these exams. I printed out pictures of the models with their respective keys but it's impossible tosee the numbers on a model by a picture. I was just wondering if anyone could recommend websites that have models to learn the parts of...

Ok, I'm a little lost so if this subject is off topic for this forum then I appoligize. I am working on a modeling project that I'm trying to implement some code for and I don't even know where to start. I'm not that good of a coder nor am I that great at math but this project, in part, is to...

(ok. I haven't given up with the relativity wrong thread. This is just something I'm thinking on meanwhile). Also please excuse my english as it is not my mother tounge. ok, for a moment let's forget about the wavelike properties of light (I had some ideas to explain light propagation like...

There is much confusion and mystery surrounding the Multiverse Theory. At present there is a wide range of different Multiverse Theories, which this paper does a good job in giving the basic concept behind the different variations Multiverse cosmological models

So, this doesn't fit the current model, right? http://heraldsun.news.com.au/common/story_page/0,5478,8344220%255E662,00.html Nasa: http://www.gsfc.nasa.gov/topstory/2004/0107filament.html

SDSS observations, supported by Subaru and Keck, confirmed that a massive cluster of galaxies is the gravitational lens for a quadruple-quasar image, the widest pair being separated by >14" (arc seconds). In addition, "[d]iscovering one such wide gravitational lens out of over 30,000 SDSS...

Now might be a good time to get some perspective on spin foam, if there are knowledgeable people around willing to help. Baez in some TWF mentioned a paper by Freidel/Louapre with "asymptotic 10j" in the title. It suggests a way to dispell the surprise over unexpected 10j numbers discovered by...

Here is a good paper that is quite neat makes a good case for evolving extensions to Inflation models. http://arxiv.org/PS_cache/hep-th/pdf/0307/0307179.pdf