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-kinetic models fitted with mkinfit — max_twa_parent"><meta property="og:description" content="This function calculates maximum moving window time weighted average
-concentrations (TWAs) for kinetic models fitted with mkinfit.
-Currently, only calculations for the parent are implemented for the SFO,
-FOMC, DFOP and HS models, using the analytical formulas given in the PEC
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- <h1>Function to calculate maximum time weighted average concentrations from
-kinetic models fitted with mkinfit</h1>
- <small class="dont-index">Source: <a href="https://github.com/jranke/mkin/blob/HEAD/R/max_twa_parent.R" class="external-link"><code>R/max_twa_parent.R</code></a></small>
- <div class="hidden name"><code>max_twa_parent.Rd</code></div>
- </div>
-
- <div class="ref-description">
- <p>This function calculates maximum moving window time weighted average
-concentrations (TWAs) for kinetic models fitted with <code><a href="mkinfit.html">mkinfit</a></code>.
-Currently, only calculations for the parent are implemented for the SFO,
-FOMC, DFOP and HS models, using the analytical formulas given in the PEC
-soil section of the FOCUS guidance.</p>
- </div>
-
- <div id="ref-usage">
- <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">max_twa_parent</span><span class="op">(</span><span class="va">fit</span>, <span class="va">windows</span><span class="op">)</span></span>
-<span></span>
-<span><span class="fu">max_twa_sfo</span><span class="op">(</span>M0 <span class="op">=</span> <span class="fl">1</span>, <span class="va">k</span>, <span class="va">t</span><span class="op">)</span></span>
-<span></span>
-<span><span class="fu">max_twa_fomc</span><span class="op">(</span>M0 <span class="op">=</span> <span class="fl">1</span>, <span class="va">alpha</span>, <span class="va">beta</span>, <span class="va">t</span><span class="op">)</span></span>
-<span></span>
-<span><span class="fu">max_twa_dfop</span><span class="op">(</span>M0 <span class="op">=</span> <span class="fl">1</span>, <span class="va">k1</span>, <span class="va">k2</span>, <span class="va">g</span>, <span class="va">t</span><span class="op">)</span></span>
-<span></span>
-<span><span class="fu">max_twa_hs</span><span class="op">(</span>M0 <span class="op">=</span> <span class="fl">1</span>, <span class="va">k1</span>, <span class="va">k2</span>, <span class="va">tb</span>, <span class="va">t</span><span class="op">)</span></span></code></pre></div>
- </div>
-
- <div id="arguments">
- <h2>Arguments</h2>
- <dl><dt>fit</dt>
-<dd><p>An object of class <code><a href="mkinfit.html">mkinfit</a></code>.</p></dd>
-
-
-<dt>windows</dt>
-<dd><p>The width of the time windows for which the TWAs should be
-calculated.</p></dd>
-
-
-<dt>M0</dt>
-<dd><p>The initial concentration for which the maximum time weighted
-average over the decline curve should be calculated. The default is to use
-a value of 1, which means that a relative maximum time weighted average
-factor (f_twa) is calculated.</p></dd>
-
-
-<dt>k</dt>
-<dd><p>The rate constant in the case of SFO kinetics.</p></dd>
-
-
-<dt>t</dt>
-<dd><p>The width of the time window.</p></dd>
-
-
-<dt>alpha</dt>
-<dd><p>Parameter of the FOMC model.</p></dd>
-
-
-<dt>beta</dt>
-<dd><p>Parameter of the FOMC model.</p></dd>
-
-
-<dt>k1</dt>
-<dd><p>The first rate constant of the DFOP or the HS kinetics.</p></dd>
-
-
-<dt>k2</dt>
-<dd><p>The second rate constant of the DFOP or the HS kinetics.</p></dd>
-
-
-<dt>g</dt>
-<dd><p>Parameter of the DFOP model.</p></dd>
-
-
-<dt>tb</dt>
-<dd><p>Parameter of the HS model.</p></dd>
-
-</dl></div>
- <div id="value">
- <h2>Value</h2>
-
-
-<p>For <code>max_twa_parent</code>, a numeric vector, named using the
-<code>windows</code> argument. For the other functions, a numeric vector of
-length one (also known as 'a number').</p>
- </div>
- <div id="references">
- <h2>References</h2>
- <p>FOCUS (2006) “Guidance Document on Estimating Persistence
-and Degradation Kinetics from Environmental Fate Studies on Pesticides in
-EU Registration” Report of the FOCUS Work Group on Degradation Kinetics,
-EC Document Reference Sanco/10058/2005 version 2.0, 434 pp,
-<a href="http://esdac.jrc.ec.europa.eu/projects/degradation-kinetics" class="external-link">http://esdac.jrc.ec.europa.eu/projects/degradation-kinetics</a></p>
- </div>
- <div id="author">
- <h2>Author</h2>
- <p>Johannes Ranke</p>
- </div>
-
- <div id="ref-examples">
- <h2>Examples</h2>
- <div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span></span></span>
-<span class="r-in"><span> <span class="va">fit</span> <span class="op">&lt;-</span> <span class="fu"><a href="mkinfit.html">mkinfit</a></span><span class="op">(</span><span class="st">"FOMC"</span>, <span class="va">FOCUS_2006_C</span>, quiet <span class="op">=</span> <span class="cn">TRUE</span><span class="op">)</span></span></span>
-<span class="r-in"><span> <span class="fu">max_twa_parent</span><span class="op">(</span><span class="va">fit</span>, <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="fl">7</span>, <span class="fl">21</span><span class="op">)</span><span class="op">)</span></span></span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 7 21 </span>
-<span class="r-out co"><span class="r-pr">#&gt;</span> 34.71343 18.22124 </span>
-<span class="r-in"><span></span></span>
-</code></pre></div>
- </div>
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