BIOL398-04/S15:Week 3

This journal entry is due on Tuesday, February 3 at midnight PST (Monday night/Tuesday morning). NOTE that the server records the time as Eastern Standard Time (EST). Therefore, midnight will register as 03:00.

NOTE: this page is under construction.

Individual Journal Assignment

• Store this journal entry as "username Week 3" (i.e., this is the text to place between the square brackets when you link to this page).
• Create the following set of links. (HINT: These links should all be in your personal template that you created for the Week 1 Assignment; you should then simply invoke your template on each new journal entry.)
  • Link to your journal entry from your user page.
  • Link back from your journal entry to your user page.
  • Link to this assignment from your journal entry.
  • Don't forget to add the "BIOL398-04/S15" category to the end of your wiki page.

MATLAB Skills Development

• Part I: Create a script that includes the following elements
  • Define a vector u containing the elements 1,2,3,4,5,6,7,8,9,10 using the colon operation
  • Define another vector v containing elements that are the square of the vector x
  • Plot v versus u (make sure you know what that sentence means!!) using circles on the points that are connected with dashed lines
  • Save your plot as a TIFF file
  • Save your data into an excel spreadsheet using the MATLAB command xlswrite

• Part II: Use MATLAB to solve the equation ln(x) + x = 0. The following steps will help.
  • Create a function that returns ln(x) + x; its first line should be

function [y] = logPlusX(x)

• • Create a script that uses the MATLAB function fsolve to solve the equation. This script may be short.

• Part III: Play with the four m-files from the Thursday Jan 22 schedule box.
  • Run the nutrient/colony model
  • Run the chemostat model
  • Save the graphical output from these two runs to JPEG files.
  • Run the chemostat model a second time, but cut the dilution rate in half
  • Plot both chemostat model runs on the same graph, adding a legend that allows a reader to identity both runs, and save as JPEG.

How To Submit Your Work

• Part I.

1. Upload the MATLAB script and provide a link on your individual journal for Week 3.
2. Upload the Excel workbook and provide a link on your individual journal for Week 3.
3. Upload your graph's TIFF file and provide a link on your individual journal for Week 3.

• Part II.

1. Upload your script and function files and provide a link on your individual journal for Week 3.
2. Post the numerical answer you got on your individual journal for Week 3.

Part III.

1. Upload three plots and provide a link on your individual journal for Week 3.

Shared Journal Assignment

• Store your shared journal entry in the shared Class Journal Week 3 page. If this page does not exist yet, go ahead and create it (congratulations on getting in first :) )
• Link to your journal entry from your user page.
• Link back from the journal entry to your user page.
• Sign your portion of the journal with the standard wiki signature shortcut (~~~~).
• Add the "BIOL398-04/S15" category to the end of the wiki page (if someone has not already done so).