Concurrence and confliction mix in the Petri net system is called confusion,which is not a good property of a model,because it appears to be difficult to obtain a "correct" implementation when confusion emerges in the Petri net system,and for systems exhibiting confusion it is also difficult to analyze some properties in the Petri net system.

Confusion can arise when ther

Novel rectenna using mixed structure of microstrip and coplanar striplines;

Exploration on profiled steel concrete and high floor construction mixed structure design;

The reasons of corrosion failures in several heat exchangers made by titanium and steel mixed structured are discussed in this article.

Ce4+-doped nano-TiO2 particles with mixed crystal structure were prepared by sol-gel method with Ti(OBu)4 as raw material, the influence of cerium ion on crystal type of TiO2 and its photocatalytic activities was studied.

Characteristics and analysis of earthquake disasters for masonry structure housing to the Ning er M6.4 earthquake;

Study on the causes of cracks on masonry structure wall and prevention measures;

Crack analysis of one six-floor masonry structure living building;

Discussion on the brick-concrete structure striking wall reforming design;

The causes of cast-in-situ slab cracks in brick-concrete structure and their treatment;

Thoughts on the analysis of earthquake disease of frame brick-concrete structure at lower stories;