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Introduction to Systems Biology

Submitted by Anonymous (not verified) on

How does the cell know when to produce a protein? Why does it produce this protein? How does it produce this protein so accurately, in transcription, timing, and concentration? It is amazing that the cell functions as precisely as it needs to in response to various stimuli. What is more amazing is that the cell's actions are a result of stochastic processes.

Graduate students and publishing

Submitted by MichelleLOyen on

I just stumbled on this very interesting discussion on why science graduate students should publish, regardless of their later career intentions.  I agree with the author on most points, but believe it really comes down to two things: (1) if you aren't going to communicate your results (both good and bad!) then you might as well have not bothered to do the work, and (2) becoming a good writer is a skill that every technical person will need in any career.

Question: Is the local energy dictating dislocation emission constant for single crystal?

Submitted by Kejie Zhao on

Hi everyone, in my size dependence study, I find the local energy dictating dislocation emission is almost constant for varied sized samples, in given directions of single crystal. I don't know this is an interesing finding, or just a common sense. Will you give me some suggestion, Thank you!

Kejie

ASME Applied Mechanics Division: Call for Nominations 2007-2008 Awards

Submitted by Ravi-Chandar on

The AMD Executive Committee is now seeking nominations for the following awards: the Timoshenko Medal, the Koiter Medal, the Drucker Medal, the AMD Award and the Young Investigator Award. The deadline for nominations is October 1, 2007. Please see the AMD website for details.

Non-planar crack growth (X-FEM and fast marching)

Submitted by N. Sukumar on

In the attached manuscript, we have coupled the extended finite element method (X-FEM) to the fast marching method (FMM) for non-planar crack growth simuations. Unlike the level set method, the FMM is ideally-suited to advance a monotonically growing front. The FMM is a single-pass algorithm (no iterations) without any time-step restrictions. The perturbation crack solutions due to Gao and Rice (IJF, 1987) and Lai, Movchan and Rodin (IJF, 2002) are used for the purpose of comparisons.