The modification of PAMAM( G =3 0) dendrimers was achieved by using aldehyde, benzyl chloride and trityl chloride as reaction agents, respectively. The complexes were synthesized simply by dropping TiCl 4 solution int...The modification of PAMAM( G =3 0) dendrimers was achieved by using aldehyde, benzyl chloride and trityl chloride as reaction agents, respectively. The complexes were synthesized simply by dropping TiCl 4 solution into the modified PAMAM dendrimers that were dissolved in certain solvent. The quantity of Ti contained in the complexes increased as the adding amount of TiCl 4 was increased. The polymerization of α methyl styrene catalyzed by the complexes was accomplished and it has shown that the complexes possessed catalytic function.展开更多
由于市场价格的不确定性和负荷需求的随机性,供电公司在不同市场间购电需要综合考虑风险和收益的均衡问题。借助金融领域的证券组合投资理论,引入一致性风险计量因子条件风险价值CVaR(Conditional Value at Risk),将均值-CVaR风险收益...由于市场价格的不确定性和负荷需求的随机性,供电公司在不同市场间购电需要综合考虑风险和收益的均衡问题。借助金融领域的证券组合投资理论,引入一致性风险计量因子条件风险价值CVaR(Conditional Value at Risk),将均值-CVaR风险收益模型应用于供电公司的购电组合,以一定风险条件下最大化期望收益为目标,建立了供电公司在实时平衡市场、现货市场和远期合同市场间的购电决策模型,并将模型转化为线性规划求解,得到了不同风险条件下的购电分配结果和收益变化情况。算例结果表明,供电公司可利用长期合同规避市场风险,CVaR也能真实地反映供电企业面临的风险大小,所提模型及方法合理、有效。展开更多
文摘The modification of PAMAM( G =3 0) dendrimers was achieved by using aldehyde, benzyl chloride and trityl chloride as reaction agents, respectively. The complexes were synthesized simply by dropping TiCl 4 solution into the modified PAMAM dendrimers that were dissolved in certain solvent. The quantity of Ti contained in the complexes increased as the adding amount of TiCl 4 was increased. The polymerization of α methyl styrene catalyzed by the complexes was accomplished and it has shown that the complexes possessed catalytic function.
文摘由于市场价格的不确定性和负荷需求的随机性,供电公司在不同市场间购电需要综合考虑风险和收益的均衡问题。借助金融领域的证券组合投资理论,引入一致性风险计量因子条件风险价值CVaR(Conditional Value at Risk),将均值-CVaR风险收益模型应用于供电公司的购电组合,以一定风险条件下最大化期望收益为目标,建立了供电公司在实时平衡市场、现货市场和远期合同市场间的购电决策模型,并将模型转化为线性规划求解,得到了不同风险条件下的购电分配结果和收益变化情况。算例结果表明,供电公司可利用长期合同规避市场风险,CVaR也能真实地反映供电企业面临的风险大小,所提模型及方法合理、有效。
