<?xml version="1.0"?> 
<param xml:id='expression_scalar_product'> 
  <time_resolution>600</time_resolution> 
  <get> 
    <amdaParam name='velocity'/> 
    <amdaParam name='imf'/> 
  </get> 
  <process description="velocity*imf">$velocity * $imf</process> 
  <output/> 
</param>