Displaying 4 results from an estimated 4 matches for "topsoils".
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topsoil
2012 Oct 19
1
Optimization in R similar to MS Excel Solver
Dear Colleagues,
I am attempting to develop an optimization routine for a river suspended
sediment mixing model. I have Calcium and Magnesium concentrations (%) for
sediments from 4 potential source areas (Topsoil, Channel Banks, Roads,
Drains) and I want to work out, based on the suspended sediment calcium and
magnesium concentrations, what are the optimal contributions from each
source area to
2013 Feb 20
0
Bayesian mixing model
...g the BCE {BCE} function to run a Bayesian sediment mixing model. The aim is to find the optimum % contribution from each of the 4 source areas that can yield the target geochemistry.
I have geochemistry for 4 source areas called Rat:
Rat<-read.table(text="CaO MgO Na2O Al2O3
Topsoils 2.511250 0.7445500 0.7085500 14.10375
ChannelBanks 55.021500 0.8665000 0.3045000 10.19800
FieldDrains 17.958221 0.9415394 0.2979383 14.68013
RoadRunoff 9.177297 1.9034304 0.4618634 22.22206", header=TRUE)
...and geochemistry for 1 target sediment called Dat:
Dat<-read.table(text=...
2012 Nov 07
4
[PATCH 1/2] 4.1.2 blktap2 cleanup fixes.
---------------------------------------------------------------------------
Backport of the following patch from development:
# User Ian Campbell <[hidden email]>
# Date 1309968705 -3600
# Node ID e4781aedf817c5ab36f6f3077e44c43c566a2812
# Parent 700d0f03d50aa6619d313c1ff6aea7fd429d28a7
libxl: attempt to cleanup tapdisk processes on disk backend destroy.
This patch properly terminates the
2011 Nov 03
0
Back-transforming in lme
Hello I am analysing aboveground biomass data from revegetation testplots which I constructed in a split-plot design using the function lme. For the experiment, the three factors are amelioration (2 levels), fertilizer (2 levels) and treatment (7 levels). Each testplot (block) has a singlereplicate of each treatment (total of 8 testplots). The blocks were constructed of topsoil. Each block was