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  1. Building Big - WGBH Educational Foundation
    Explore great feats of engineering and the ingenuity of the engineers, architects, and builders who designed and built them. Learn about bridges, domes, skyscrapers, dams, and tunnels; use Flash interactive engineering labs to experiment with forces, materials, loads, and shapes; take on the challenges of building big; visit wonders of the world, a databank of big structures; investigate big structures near you; and find out what's cool about being an engineer. The Educator's Guide offers hands-on activities. Based on a five-part PBS television series from WGBH Boston, and hosted by author-illustrator David Macaulay. more>>

  2. CADalog.com
    An AutoCAD CAD Shareware Clearinghouse, offering a collection of over 4,000 shareware programs for CAD engineers, designers, graphics people, etc. Also a very large free 2d and a minimal-cost 3d parts library with hard-to-find parts. more>>

  3. Computational Science Education Project (CSEP) - U.S. Department of Energy
    An electronic book for teaching Computational Science and Engineering to students at the advanced undergraduate level and higher. Tutorials for freely available networking and visualization software are also included for high school students and people from the commercial sector. Topics covered: An Overview Of Computational Science; Scientific Visualization in High Performance Computing; Networks; Computer Architecture; Tutorials for Network and Visualization Tools, and PVM, MasPar, CM-5, iPSC860; Fortran 90; Numerical Linear Algebra; Ordinary Differential Equations; Some High Performance Computing Issues in PDEs; Random Number Generators; Monte Carlo Methods; Mathematical Optimization; and case studies including Ocean Models; Monte Carlo Surface to Surface Particle Transport; Direct and Inverse Bioelectric Fields Problems; Chaos from Nonlinear Mappings; Seismic Wave Propagation and Inversion; and Mutational Meltdown of Endangered Species. Sponsored by the U.S. Department of Energy and maintained by the Oak Ridge National Laboratory. more>>

  4. Engineers Edge
    Formulas, design guide, and online calculators. Design and engineering topics include Reynold's number, pipe friction, mechanical tolerances, beam bending, springs, thread stress area, strain gauge application, plastic snap fit application, pressure vessel and more. Formulas for automotive, stress and strain, gear and sheet metal. more>>

  5. Society for Industrial and Applied Mathematics (SIAM)
    SIAM was founded in 1951 to advance the application of mathematics to science and industry, promote mathematical research that could lead to effective new methods and techniques for science and industry, and to provide media for the exchange of information and ideas among mathematicians, engineers, and scientists. Journals, books, conferences, awards, and prizes. more>>


Mason error

error in file:   /usr/lib/perl5/5.6.0/Carp/Heavy.pm
line 79:  Bizarre copy of HASH in aassign
75:  # them according to the format variables defined earlier in
76:  # this file and join them onto the $sub sub-routine string
77:  if ($hargs) {
78:  # we may trash some of the args so we take a copy
79:  @a = @DB::args; # must get local copy of args
80:  # don't print any more than $MaxArgNums
81:  if ($MaxArgNums and @a > $MaxArgNums) {
82:  # cap the length of $#a and set the last element to '...'
83:  $#a = $MaxArgNums;
component stack:   /library/branch.html
code stack:   /usr/lib/perl5/5.6.0/Carp/Heavy.pm:79

debug info:   Debug file is '/var/lib/mason/debug/anon/19'.


raw error:

error while executing /library/branch.html:
Bizarre copy of HASH in aassign at /usr/lib/perl5/5.6.0/Carp/Heavy.pm line 79.