Recent content by Rizer

I am trying to estimate the response variables from the newly observed predictors. I have built the GLM using R and Matlab, but I have no idea how to get the prediction interval/distribution for the response variable.

Hi Chiro My current model uses Gamma distribution and a reciprocal link function. I think the same simulation procedure can be applied to any distribution-link function pairs? Or are there standard analytical forms for the commonly used pairs? Thanks

I am currently working on a prediction problem using generalized linear model, My goal is to get the prediction distribution of the response variable. I read a thread (https://stat.ethz.ch/pipermail/r-help/2003-May/033165.html) saying the prediction uncertainty of a generalized linear model...

Thanks alot! Now I am clear about the concept. I tried to calculate h using the table you provided, and the values matched well with the formula H = 5nRT/2 + nRT Thanks for your detailed explanations, which furthers my understandings on this topic. And now I am sure that R-134a can't be...

But why does the graphs of Enthalpy usually depends on both T and P? Is it solely because the gas is not an ideal gas?? The Enthalpy graph I found: http://www.nt.ntnu.no/users/haugwarb/Phase_diagrams_and_thermodynamic_tables/PhaseDiagrams/R134a.pdf I also found this example...

Thanks Andrew, but what about using H = 5nRT/2 + nRT or H = 7nRT/2 + nRT etc. for ideal gases made up of molecules?

I know enthalpy H = U + PV and for ideal gas, PV = nRT so it becomes H = U + nRT However, U = 3NkT/2 = 3nRT/2 for ideal gas as well. So why is it incorrect to put H = 3nRT/2 + nRT ?? Thanks

Thanks you very much, looks like there're some new concepts to learn.

Thank you DrDu. Does this also apply to cases without doping? Like simply charging a plastic ruler with rubbing??

Dear all, I have been thinking, if insulators have their valence band filled, then which band does the extra electrons go when it is negatively charged?? If it is the conduction band, then it would become a conductor... Similarly, if it is positively charged, there would be a hold in the...

It is only at introductory level. Please concern it as easy as possible, classical electrodynamics I think.

Thx for answreing. I think this is a University question...

Excuse me, can anyone teach me how to calculate the induced magnetic moment of steel, given the applied magnetic field?

And is it ok for me to use Bernulli's eqn, and add the KE expression of the ball on RHS?

Thx. The ball is in the thinner part of syringe. Can you explain why mass in the needle = (A_b / A_n)*v_b?