By S. Cohen (auth.), B. van Rootselaar (eds.)
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The second one foreign symposium on Pectins and Pectinases used to be organised through Wageningen college and study Centre and was once held in Rotterdam, may well 6-10, 2001. This fruitful assembly was once attended through round a hundred thirty members from greater than 20 nations, representing just about all of the groups/industries operating around the globe on pectins and pectinases.
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Additional info for Annals of Systems Research: Publikatie van de Systeemgroep Nederland Publication of the Netherlands Society for Systems Research
J. V AN DIXHOORN In conclusion it can be said, that network graphs and bond graphs have representation value in their own right, they give easy access to modem network analysis and computer aided design techniques, but above all they represent an important stepping stone in the model building process. References 1. Paynter, H. , AlUllysis and design of engineering systems. ) 1960. 2. Kamopp, D. and Rosenberg, R. , Analysis and simulation of multiport systems. ) 1968. 3. Trent, H. , Isomorphisms between oriented linear graphs and lumped physical systems.
In computer programs the need for information is of secondary importance, and the main concern of Activity Analysis is the derivation of the LS from the PS (point (ii». However, the consistency check ~lowed by the theory can be relevant to the correctness of the program (point (i», since logical inconsistencies are often due to programming errors. We shall illustrate this with the aid of a computer program: PREPAR as an example. 3. Description of PREPAR is part of one of the Management Information systems at KSLA*.
0'1 37 NETWORK GRAPHS AND BOND GRAPHS +o . ~5. t;:;""~ r:.! I!. ", , ----------- ! il'~~~: , • "1 II i ! -J . j • . -....... ,,1/, ... , , .. / /~/; :. 12 sec later than it reaches the front wheel. Nevertheless there is an immediate movement of the rear wheel, due to the mass and moment of inertia of the body. 4. Conclusion As has been shown network graphs and bond graphs can represent the structure of a physical system in a compact and clear way. Even for simple examples, such as the 2-dimensional motion of a motorcar, it can be seen they compare favorably with other methods, such as the direct modeling by differential equations or the transfer function approach, both used, for example, in .
Annals of Systems Research: Publikatie van de Systeemgroep Nederland Publication of the Netherlands Society for Systems Research by S. Cohen (auth.), B. van Rootselaar (eds.)