# User talk:Jackzhp

jackiszhp@gmail.com If you are willing to do so, please send me email, since I don't check this page often. Thanks.

## List of utility function

To avoid speedy deletion, so put it temporarily here.

There are many utility functions used in literature. This page is trying to collect all kinds of utility used in the literature.

Most utilities have the elasticity of intertemporal substitution as the relative risk aversion. The one can separate these two parameters come as an attack on risk premium puzzle. This is not an easy one.

Some terms used to identify a utility function.

   * CES (constant elasticity of substitution, or isoelastic) utility
* Exponential utility
* Quasilinear utility
* Homothetic utility
* Habit formulation affects the utility
* Epstein & Zin utility[1]: $U_{t}=\left(u_{t}^{1-\frac{1}{\psi}}+\beta\left[E_{t}\left(U_{t+1}^{1-\gamma}\right)\right]^{\frac{1-\frac{1}{\psi}}{1-\gamma}}\right)^{\frac{1}{1-\frac{1}{\psi}}}$


## Swallow study

Barium swallow shows that when you eating, some stuff will "always" get into your lung.

One image: the barium in the lung:[[1]]

papers mention barium in lung:

• Severe barium sulfate aspirationinto the lung: clinical presentation, prognosis and therapy.

Tamm I, Kortsik C. Abteilung Hämatologie und Onkologie, Medizinische Universit atsklinik, Freiburg, Deutschland. itamm@ljcrf.edu

1. ^ Epstein, L.G. & Zin, S.E. (1989). Substitution, Risk Averion, and the Temporal Behavior of Consumption and Asset Returns: A theoretical Framework. Econometrica, 57(4), 937-969.

## Recent edits to PS

Hello, and thank you for your recent contributions. I appreciate the effort you made for our project, but unfortunately I had to undo your edit(s) because I believe the article was better before you made that change. Feel free to contact me directly if you have any questions. Thank you! Greenmaven (talk) 06:58, 21 November 2013 (UTC)