To solve the theoretic problem about the relationship between carrier's obligations and exceptions, the UNCITRAL working group had made efforts to work out several blue prints.
Therefore, it has great theoretic and practical significance of researching on issues of social security for the vulnerable group, especially the laid-offs and the unemployed.
因此对城镇下岗失业人员这一新的弱势群体的社会保障问题进行研究就具有重大的理论和现实意义。
3
In this work, the theoretic methods including group contribution method and molecular dynamics simulation are used to estimate the properties of high-density fuels.