The paper discusses the progress of the research on offshore platform structures subject to accidental disasters such as collision, fire and explosion, and the current research on its risk assessment.

To assess the safety of a jacket platform subjected to an accidental disaster,a system reliability-based method for assessment of the damaged platform was proposed.

Only with this method,it is significant to under stand and master the finiteness and infiniteness,contingency and inevitableness of art to create an creative multiform phase of art.

Richard Rorty, a master of the new pragmatism, brings forward in his Contingency, Irony, and Solidarity that the self, society, desire, value root in the haphazard history.

,the ideal novel keep the tension between the narrative“form” and the “contingency” of the content,representing the character.

Kundra is built on his unbearable lightness of being with so many "es muss sein";especially on the reterative betrayal by Sapina and the passable body of Theresa that are constructed by means of fancy-the brilliant female heroines either on a necessity-canoe or the one on an accidentalness-canoe moving between fantasy and reality.

Analysis and test of data’s accidental errors and systematic errors in marketing research;

This paper discusses the method of making accidental error by Montcaro.

Because of fault in operation and the precision of instrument,the defect error and accidental error are involved in the procession of data collection,the defect error that are brought by mistakes of people and influence of outside is large,the contingency error that are inevitably and randomicity is little.