Novel receptors based on Schiff base bearing phenolic hydroxy groups have been synthesized and characterized.The UV-vis date indicates that a 1∶1 stoichiometry complex is formed between receptors and F-.1H NMR titrat...Novel receptors based on Schiff base bearing phenolic hydroxy groups have been synthesized and characterized.The UV-vis date indicates that a 1∶1 stoichiometry complex is formed between receptors and F-.1H NMR titrations and solvation effect confirmed hydrogen interaction between the receptors and anion.The results indicate that the affinity is related to the number of hydrogen bond.Hence,the receptors 1,2 and 3 can act as fluoride ion sensors even in the presence of other hahide ions.展开更多
为正确选择主要防御方向,基于对策论和逼近理想点排序法(technique for order preference by similarity to an ideal solution,TOPSIS)对烟幕对空防御方向选择问题进行研究。考虑敌我双方的战术博弈,在构建体现敌我双方利益激烈对抗的...为正确选择主要防御方向,基于对策论和逼近理想点排序法(technique for order preference by similarity to an ideal solution,TOPSIS)对烟幕对空防御方向选择问题进行研究。考虑敌我双方的战术博弈,在构建体现敌我双方利益激烈对抗的矩阵对策基础上,依据逼近理想点排序原理对我方的防御方向进行综合排序,运用一种新的决策思维建立起我方烟幕对空防御方向选择的辅助决策模型,并通过算例和实例分析验证了新模型的实用性和有效性。仿真结果表明,该研究可为烟幕对空防御方向的选择提供辅助决策支持。展开更多
文摘Novel receptors based on Schiff base bearing phenolic hydroxy groups have been synthesized and characterized.The UV-vis date indicates that a 1∶1 stoichiometry complex is formed between receptors and F-.1H NMR titrations and solvation effect confirmed hydrogen interaction between the receptors and anion.The results indicate that the affinity is related to the number of hydrogen bond.Hence,the receptors 1,2 and 3 can act as fluoride ion sensors even in the presence of other hahide ions.
文摘为正确选择主要防御方向,基于对策论和逼近理想点排序法(technique for order preference by similarity to an ideal solution,TOPSIS)对烟幕对空防御方向选择问题进行研究。考虑敌我双方的战术博弈,在构建体现敌我双方利益激烈对抗的矩阵对策基础上,依据逼近理想点排序原理对我方的防御方向进行综合排序,运用一种新的决策思维建立起我方烟幕对空防御方向选择的辅助决策模型,并通过算例和实例分析验证了新模型的实用性和有效性。仿真结果表明,该研究可为烟幕对空防御方向的选择提供辅助决策支持。
