Del Norte R & D is an independent research and development laboratory located near Yuma, Arizona. Our original objective was to do "materials research". We have a large 3.4 meter Ebert spectrograph produced by Jarrell-Ash as well as a small scanning electron microscope and an X-ray diffractometer, etc. Also, we have an extensive library relating to physical sciences, mathematics, and computers. In addition, we have several PCs with both Windows and Linux operating systems. The original idea was that the materials available to any civilization are the key to it's success. That is, we had the bronze age, the iron age, etc. However, Del Norte got into so many interesting areas of research that we have to say that it's scope is greatly expanded, although we still have an interest in materials research!
One of our main ongoing efforts is the find out what we can do with Mathcad. We have developed "Short Courses" in trigonometry and electronics as well as many other scientific/technical Mathcad documents. These Mathcad documents look like ordinary books and print like ordinary books. However, the equations are "hot" in the sense that they can be used to calculate actual numerical results. The technique used in performing computations is always to copy the appropriate equations to a separate working document, unlock the equations, and then tell Mathcad to calculate the document. All the equations in the original document are locked to prevent them from attempting to compute a result. The original Mathcad document serves as the documentation for any desired computation. Whenever the Mathcad computation proves to be too slow, we also use Mathcad's programming constructs to prototype and debug real computer programs (C/C++) in the form of dynamic link libraries(DLLs) that can be linked to Mathcad. In this case, we only use two Mathcad documents: one that processes the input and starts the computation and another that processes the final results, draws graphs, etc. Doing this can produce speeds of up to 150 times as fast as the Mathcad computation. Recently, we have found out how to turn Mathcad documents into PDF files that look exactly like the original Mathcad documents. There is so much scientific/technical knowledge stored in these documents that we decided to release these documents in the form of PDF files at a price that any student can afford. We all know how expensive technical books are when obtained from commercial publishers! Being students ourselves, we are on the side of the student. However, remember that these are copyrighted works and you are only allowed to make one copy for backup purposes and one printout for your own use. We hope that the prices will be so low that no one will be tempted to pirate them for commercianl gain.
Page 3: Our Work on the Boundary Element Method
Page 4: Data Processing Via MathCad/References
Page 5: Comments About Obtaining the ZIP Files