利用Arnol'd的Legendrian理论,对三维Anti de Sitter空间中Lorentzian曲面进行了研究.引入光维高度函数概念研究了三维Anti de Sitter空间Lorentzian曲面的S1t×S1s-值、光锥Gauss映射的奇点,进行了奇点分类,揭示了类光Causs-kr...利用Arnol'd的Legendrian理论,对三维Anti de Sitter空间中Lorentzian曲面进行了研究.引入光维高度函数概念研究了三维Anti de Sitter空间Lorentzian曲面的S1t×S1s-值、光锥Gauss映射的奇点,进行了奇点分类,揭示了类光Causs-kronecker曲率之间的关系;并研究了Lorentzian曲面的一些基本几何性质.展开更多
It needs the foundation of system and the guarantee of organizational system for anti-corruption,but it is more necessary to build and form an effective anti-corruption mechanism,so that the anti-corruption can be rea...It needs the foundation of system and the guarantee of organizational system for anti-corruption,but it is more necessary to build and form an effective anti-corruption mechanism,so that the anti-corruption can be really put into practice. Anti-corruption mechanism refers to a organic operation system of the interaction,interconnection and constraint between the constituent elements( parts) and elements of national anti-corruption,and as a system,anti-corruption mechanism should have the characteristics of system aticness,comprehensiveness,transparency,legalization,public participation,scientific dynam ic,and internationalism. The construction of deepening anti-corruption mechanism is the need for reconstructing the ruling legitimacy of the party and the governm ent. Adhering to the principle of treating both root causes and symptoms is necessary in the construction of anti-corruption m echanism,com bating and punishing corruption is an important part of anti-corruption,and the prevention and control of corruption is the basic project of anti-corruption. Therefore,the construction of prevention and control mechanism in the anti-corruption mechanism has a more far-reaching significance.展开更多
以本征机械性能良好的溶胶-凝胶酸催化SiO2和TiO2薄膜为基础,设计并制备了具有高透过率和良好机械性能的λ/4-λ/4 Si O2/Si O2-TiO2双层增透膜.所得薄膜在中心波长处的峰值透过率达到99.9%,与设计膜层的透过率曲线高度吻合.经耐摩擦和...以本征机械性能良好的溶胶-凝胶酸催化SiO2和TiO2薄膜为基础,设计并制备了具有高透过率和良好机械性能的λ/4-λ/4 Si O2/Si O2-TiO2双层增透膜.所得薄膜在中心波长处的峰值透过率达到99.9%,与设计膜层的透过率曲线高度吻合.经耐摩擦和黏附性测试后,该双层增透膜峰值透过率基本保持不变,硬度高达4H,表明其具有良好的机械性能.水表面接触角测试结果显示该双层增透膜具有超亲水性,表现出良好的冷/热防雾效果.展开更多
文摘利用Arnol'd的Legendrian理论,对三维Anti de Sitter空间中Lorentzian曲面进行了研究.引入光维高度函数概念研究了三维Anti de Sitter空间Lorentzian曲面的S1t×S1s-值、光锥Gauss映射的奇点,进行了奇点分类,揭示了类光Causs-kronecker曲率之间的关系;并研究了Lorentzian曲面的一些基本几何性质.
文摘It needs the foundation of system and the guarantee of organizational system for anti-corruption,but it is more necessary to build and form an effective anti-corruption mechanism,so that the anti-corruption can be really put into practice. Anti-corruption mechanism refers to a organic operation system of the interaction,interconnection and constraint between the constituent elements( parts) and elements of national anti-corruption,and as a system,anti-corruption mechanism should have the characteristics of system aticness,comprehensiveness,transparency,legalization,public participation,scientific dynam ic,and internationalism. The construction of deepening anti-corruption mechanism is the need for reconstructing the ruling legitimacy of the party and the governm ent. Adhering to the principle of treating both root causes and symptoms is necessary in the construction of anti-corruption m echanism,com bating and punishing corruption is an important part of anti-corruption,and the prevention and control of corruption is the basic project of anti-corruption. Therefore,the construction of prevention and control mechanism in the anti-corruption mechanism has a more far-reaching significance.
文摘以本征机械性能良好的溶胶-凝胶酸催化SiO2和TiO2薄膜为基础,设计并制备了具有高透过率和良好机械性能的λ/4-λ/4 Si O2/Si O2-TiO2双层增透膜.所得薄膜在中心波长处的峰值透过率达到99.9%,与设计膜层的透过率曲线高度吻合.经耐摩擦和黏附性测试后,该双层增透膜峰值透过率基本保持不变,硬度高达4H,表明其具有良好的机械性能.水表面接触角测试结果显示该双层增透膜具有超亲水性,表现出良好的冷/热防雾效果.
