将李群理论用于金融问题中出现的数学模型的微分方程,研究了Zero-Coupon bond pricing模型.求出了该模型的单参数李点对称及它相应的群伴随表达式,由此求得该模型允许的一维李群的子代数的最优系统并且利用最优系统构造该模型相应的微...将李群理论用于金融问题中出现的数学模型的微分方程,研究了Zero-Coupon bond pricing模型.求出了该模型的单参数李点对称及它相应的群伴随表达式,由此求得该模型允许的一维李群的子代数的最优系统并且利用最优系统构造该模型相应的微分方程的一些特殊的不同类的闭解.展开更多
Fuel taxes are still a primary funding source for the development and maintenance of transportation infrastructure. Such a tax is collected as a flat fee from the importer or producer of the taxable fuel product. Fuel...Fuel taxes are still a primary funding source for the development and maintenance of transportation infrastructure. Such a tax is collected as a flat fee from the importer or producer of the taxable fuel product. Fuel-efficiency improvements and the adoption of zero-emission vehicles result in a continuous decrease in gasoline tax revenues. This paper proposes a novel distance-based alternative method to replace current gasoline tax collection systems in Japan by providing a software architecture platform. In this platform, we utilize driving information gathered via communication mechanisms installed in connected automated vehicles to develop a system that collects gasoline tax based on reserving spatio-temporal grids. Spatio-temporal sections are created by dividing space and time into equal grids and a designated tax charge is assigned. Connected automated vehicles reserve a planned travel route in advance and travel based on reservation information. The performance evaluation results indicate that the proposed system adequately reserves the requested grids and accurately collects gasoline taxes based on a spatio-temporal grid with minimum communication time and no data package loss. The proposed method is based on micro travel distance charges, which generates gasoline tax revenue by 5.7 percent for model year 2022 and 21.8 percent for model year 2030 as compared to the current flat-fee system.展开更多
“单体城市( 镇) ”主导的城市化及其城市规划造成产业结构优化迟缓、区域竞争力耗损、城市建设用地无序蔓延等严重后果。在珠江三角洲G D P 快速增长的背后,是珠江三角洲各级市( 镇) 以“零地价”竞相吸引投资所造成的廉价劳动力与建...“单体城市( 镇) ”主导的城市化及其城市规划造成产业结构优化迟缓、区域竞争力耗损、城市建设用地无序蔓延等严重后果。在珠江三角洲G D P 快速增长的背后,是珠江三角洲各级市( 镇) 以“零地价”竞相吸引投资所造成的廉价劳动力与建设用地的过度消耗。城市化的确切内涵应当是传统农村文明向现代城市文明的彻底转换,在这个过程中“人的改造”尤为重要。展开更多
文摘Fuel taxes are still a primary funding source for the development and maintenance of transportation infrastructure. Such a tax is collected as a flat fee from the importer or producer of the taxable fuel product. Fuel-efficiency improvements and the adoption of zero-emission vehicles result in a continuous decrease in gasoline tax revenues. This paper proposes a novel distance-based alternative method to replace current gasoline tax collection systems in Japan by providing a software architecture platform. In this platform, we utilize driving information gathered via communication mechanisms installed in connected automated vehicles to develop a system that collects gasoline tax based on reserving spatio-temporal grids. Spatio-temporal sections are created by dividing space and time into equal grids and a designated tax charge is assigned. Connected automated vehicles reserve a planned travel route in advance and travel based on reservation information. The performance evaluation results indicate that the proposed system adequately reserves the requested grids and accurately collects gasoline taxes based on a spatio-temporal grid with minimum communication time and no data package loss. The proposed method is based on micro travel distance charges, which generates gasoline tax revenue by 5.7 percent for model year 2022 and 21.8 percent for model year 2030 as compared to the current flat-fee system.
文摘“单体城市( 镇) ”主导的城市化及其城市规划造成产业结构优化迟缓、区域竞争力耗损、城市建设用地无序蔓延等严重后果。在珠江三角洲G D P 快速增长的背后,是珠江三角洲各级市( 镇) 以“零地价”竞相吸引投资所造成的廉价劳动力与建设用地的过度消耗。城市化的确切内涵应当是传统农村文明向现代城市文明的彻底转换,在这个过程中“人的改造”尤为重要。
