Displaying 2 results from an estimated 2 matches for "sbar".
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2003 Dec 02
2
model of fish over exploitation
Dear all,
I have a serious problem to solve my model. I study over exploitation of
fish in the bay of biscay (france). I know only the level of catch and
the fishing effort (see data below) by year.
My model is composed by the following equations:
* the growth function
Gt(St) = r*St*(1-St/sbar)
with Gt the growth of each period t
r intrinsec growth of the stock
sbar carriyng capacity of the stock
St the fish stock of each period t
* the production function
Ht(St, Xt) = alpha*St*Xt
Ht the catch for each period t
Xt fishing effort for each period t
alpha parameter of boat productivity
*...
2010 Apr 21
2
problem of R CMD check
Hi all,
Today, i just installed the newest R version 2.10.1 and other necessary
tools for building R package under windows,e.g. Rtools, perl. All are the
newest version.
After the correct configuration under windows, i use it to re-check my old
package. I found the following prolem when checking EXAMPLE, which did not
exist before this re-installation.
########
* checking examples ... ERROR