Finish step-14.

git-svn-id: https://svn.dealii.org/trunk@5806 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/doc/news/2002/c-3-3.html b/deal.II/doc/news/2002/c-3-3.html
index ce2cdc820e5b0ae6ca9e6f788739d359bdf91500..795644a08ae3a7ff36dde6dfcacc79383a6997e7 100644 (file)
--- a/deal.II/doc/news/2002/c-3-3.html
+++ b/deal.II/doc/news/2002/c-3-3.html
@@ -33,6 +33,13 @@ contributor's names are abbreviated by WB (Wolfgang Bangerth), GK
 <h3>General</h3>
 
 <ol>
+  <li> <p> 
+       New: The step-14 example program demonstrates duality based
+       error estimators and some more software design concepts.
+       <br>
+       (WB 2002/05/05)
+       </p>
+
   <li> <p> 
        New: In all previous versions, <acronym>deal.II</acronym> used
        the <a href="http://www.cs.wustl.edu/~schmidt/ACE.html"

diff --git a/deal.II/doc/news/news.html b/deal.II/doc/news/news.html
index 3a610fc9262e9452f63e39307b099d09d08a5325..e77984d6edae9c64b65151c017dcb03e26a2b0b5 100644 (file)
--- a/deal.II/doc/news/news.html
+++ b/deal.II/doc/news/news.html
@@ -48,6 +48,19 @@
 
     <dir>
     <dl>
+      <dt>
+          <strong>2004/05/05: New example program demonstrating
+          duality based error estimators</strong>
+      </dt>
+      <dd>
+          The step-14 example program in the tutorial demonstrates the
+          use of duality based error estimation strategies which have
+          been the focus of the Heidelberg group (from which the main
+          authors come) for the last years. Some more strategies for
+          modular and extensible programming are also discussed.
+         </p>
+      </dd>
+
       <dt>
           <strong>2004/04/30: Multi-threading support using POSIX</strong>
       </dt>

diff --git a/deal.II/doc/title.html b/deal.II/doc/title.html
index d7c1f2b2ff693194154918880ba1920bc2a7efaf..d841fee281221ef382b11c52540d7f826480fad4 100644 (file)
--- a/deal.II/doc/title.html
+++ b/deal.II/doc/title.html
@@ -23,7 +23,7 @@
   document.open();
   if (release != "")
   {
-    document.writeln("<h1 style=\"text-align: center;\">The deal.II Homepage Version "+ release + "</h1>");
+    document.writeln("<h1 style=\"text-align: center;\">The Homepage of deal.II  Version "+ release + "</h1>");
   } else {
     document.writeln("<h1 style=\"text-align: center;\">The deal.II Homepage</h1>");
   }

diff --git a/deal.II/doc/tutorial/chapter-2.step-by-step/navbar.html b/deal.II/doc/tutorial/chapter-2.step-by-step/navbar.html
index 77768a64c8fba06064e079d41058c8da4a37b344..3dc6e60b3bba4d8b1e4c9366a24e7fe5b0c51bcf 100644 (file)
--- a/deal.II/doc/tutorial/chapter-2.step-by-step/navbar.html
+++ b/deal.II/doc/tutorial/chapter-2.step-by-step/navbar.html
@@ -101,6 +101,12 @@
          <a href="step-13.html" target="body">Step 13</a>
        </p>
       </li>
+
+      <li>
+       <p>
+         <a href="step-13.html" target="body">Step 14</a>
+       </p>
+      </li>
     </dl>
 
 

diff --git a/deal.II/doc/tutorial/chapter-2.step-by-step/step-14.data/results.html b/deal.II/doc/tutorial/chapter-2.step-by-step/step-14.data/results.html
index 758af0a481d403f3c1b72b9f6cb8fbc4fb35b522..596118838d5ae42b72c01ab56fa37d8fc008f1dd 100644 (file)
--- a/deal.II/doc/tutorial/chapter-2.step-by-step/step-14.data/results.html
+++ b/deal.II/doc/tutorial/chapter-2.step-by-step/step-14.data/results.html
@@ -469,8 +469,22 @@ criterion with the old ones. These are the results:
   src="step-14.data/step-13/error-comparison.gif">
  </img></a>
 </p>
+
 <p>
-TODO
+The results are, well, somewhat mixed. First, the Kelly indicator
+disqualifies itself by its unsteady behavior, changing the sign of the
+error several times, and with increasing errors under mesh
+refinement. The dual weighted error estimator has a monotone decrease
+in the error, and is better than the weighted Kelly and global
+refinement, but the margin is not as large as expected. This is, here,
+due to the fact the global refinement can exploit the regular
+structure of the meshes around the point of evaluation, which leads to
+a better order of convergence for the point error. However, if we had
+a mesh that is not locally rectangular, for example because we had to
+approximate curved boundaries, or if the coefficients were not
+constant, then this advantage of globally refinement meshes would
+vanish, while the good performance of the duality based estimator
+would remain.
 </p>
 
 
@@ -481,7 +495,7 @@ TODO
 The results here are not too clearly indicating the superiority of the
 dual weighted error estimation approach for mesh refinement over other
 mesh refinement criteria, such as the Kelly indicator. This is due to
-the relative simplicity of the shown application. If you are not
+the relative simplicity of the shown applications. If you are not
 convinced yet that this approach is indeed superior, you are invited
 to browse through the literature indicated in the introduction, where
 plenty of examples are provided where the dual weighted approach can

diff --git a/deal.II/doc/tutorial/chapter-2.step-by-step/toc.html b/deal.II/doc/tutorial/chapter-2.step-by-step/toc.html
index ae1fc2fcb6d88be500fcdd357957b5237336790e..9ceed4bd1ab03d006f006486d9a6160cee737cd2 100644 (file)
--- a/deal.II/doc/tutorial/chapter-2.step-by-step/toc.html
+++ b/deal.II/doc/tutorial/chapter-2.step-by-step/toc.html
@@ -133,6 +133,12 @@ At present, the following programs exist:
       <dd><strong>What's new:</strong> Software design questions and
       how to write a modular, extensible finite element program.
       </dd>
+
+      <dt><a href="step-14.html">Step 13</a></dt>
+      <dd><strong>What's new:</strong> Duality based error estimators,
+      more strategies to write a modular, extensible finite element
+      program.
+      </dd>
 </dl>
 
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