Emerging engineering approaches and applications : selected, by Linli Xu; Elwin Mao

By Linli Xu; Elwin Mao

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Extra info for Emerging engineering approaches and applications : selected, peer reviewed papers from the 2011 International Conference on Information Engineering for Mechanics and Materials , August 13-14, 2011, Shanghai, China

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Arc links place and transition, which looks like a directed arrow. Token is to describe available data or resource, which is living in place. The Petri net is a directed bipartite graph. Definition 1 (Petri net) A Petri net is a triple PN=(P, T, F): (1) P∩T=Ø (2) P∪T≠Ø (3) F ⊆ (P×T) ∪(T×P) (4) dom(F) ∪cod(F)=P∪T dom(F)={x| ∃ y: (x,y) ∈F} (domain of F) cod(F)={y| ∃ x: (x,y) ∈F} (range of F) P is set of places, T is set of transitions, and F is set of arcs that connect places and transitions. Workflow-net[2] is Petri net that describes work flow.

JavaScript can really make the business client with certain ability, therefore, the rich client application mode is proposed [6]. But with the development of JavaScript, it was found that excessive use of JavaScript would make the page load slowly, because the client needs to download the JavaScript code to the client, which will occupy a certain bandwidth. To ensure that users do not wait too long, JavaScript code should generally be controlled at 10K ~ 20K [6], that is to say, only part of the functions can be placed on the client, so the system designers need to distribute system functions.

Obviously this approach resulted in data redundancy. Ajax technology has changed this situation, the user processing Ajax cascading menu, when the select value of the menu changes, the client sent out 36 Emerging Engineering Approaches and Applications request to the server according current ID and class number category, server will get the subclass data and constructed a drop-down box and then returned to the client. The client callback function removed the second layer of cascading menus, and displayed the data that the server returned.

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