Enforcement compliance implies that the states are forced to comply with the treaties; and Self-compliance means the states comply with the treaties for their self-interest or because they perceive the norms as legitimate.

In recent years,a new mechanism has arisen to promote compliance with international environmental treaties——compliance mechanism.

"compliance mechanism" has become key words in international environmental legal discourse.

And the research of compliance lies in the core position among the various sub-areas of international institutions.

Compliance refers to keeping the commitments.

Compliance mechanism is composed by three components,the primary rule system,the compliance information system and the non-compliance response system.

In this paper,aiming at some special requirements of mesh simplification in reverse engineering,a non-uniform mesh simplification algorithm based on forcible constraint is presented.

A Research on Basic Legal Issues of Compulsory Contracting;

As a restricted measure to principle of freedom of contract,the compulsory contracting system plays an important part in protecting the profits of inferiors,safeguarding the justice of contract.

But on the other hand,we should limit the scope of compulsory contracting.

In legal meaning, classifying the types of mandatory contracting norms according to different sources of law and different contracting stages lent themselves to the obligation of mandatory contracting, is essentially to define the subject of obligation in mandatory contracting and relationship between the performance of mandatory contracting obligation and contract forming.