There have been a few theoretical calculations of resonance energies (RE) and bond orders of conjugated hydrocarbons containing a four-membered ring. By using the structure-resonance theory Herndon calculated the RE f...There have been a few theoretical calculations of resonance energies (RE) and bond orders of conjugated hydrocarbons containing a four-membered ring. By using the structure-resonance theory Herndon calculated the RE for a wide range of conjugated hydrocarbons.展开更多
The careers of three Chinese physicists,Hu Ning,Ma Shijun,and Peng Huanwu at the Dublin Institute for Advance Studies in the 1940s,and later,are described.A brief history of the foundation and operations of the instit...The careers of three Chinese physicists,Hu Ning,Ma Shijun,and Peng Huanwu at the Dublin Institute for Advance Studies in the 1940s,and later,are described.A brief history of the foundation and operations of the institute,as well as the roles in it of Erwin Schrodinger,Walter Heitler,Max Born,and others are included.Some details are given of the works carried out there.The three men's post-institute careers are described,Ma eventually in Australia,and Hu and Peng in the People's Republic of China where they became distinguished leaders of theoretical physics research.展开更多
一、未来城市的预想,法国理论家保罗·维利里奥(Paul Virilio)从速度政治学(politics of speed)的角度出发,将现代性的本质界定为“后勤学的”(logistical),即只有物流技术所带来的流动性和加速性才是现代社会所建立的前提条件。后...一、未来城市的预想,法国理论家保罗·维利里奥(Paul Virilio)从速度政治学(politics of speed)的角度出发,将现代性的本质界定为“后勤学的”(logistical),即只有物流技术所带来的流动性和加速性才是现代社会所建立的前提条件。后勤学最早来自于冷兵器时期的战争,源于1837年出版的著作《战争的艺术》(Précis de l’art de la guerre),指的是跟随随时移动的作战部队,对物资和军需品进行供给、运输和分配的一套组织规划技术。不过如今,后勤学已经蔓延至我们社会生活方方面面的细节中,远远超越于战争的狭隘领域。展开更多
文摘There have been a few theoretical calculations of resonance energies (RE) and bond orders of conjugated hydrocarbons containing a four-membered ring. By using the structure-resonance theory Herndon calculated the RE for a wide range of conjugated hydrocarbons.
文摘The careers of three Chinese physicists,Hu Ning,Ma Shijun,and Peng Huanwu at the Dublin Institute for Advance Studies in the 1940s,and later,are described.A brief history of the foundation and operations of the institute,as well as the roles in it of Erwin Schrodinger,Walter Heitler,Max Born,and others are included.Some details are given of the works carried out there.The three men's post-institute careers are described,Ma eventually in Australia,and Hu and Peng in the People's Republic of China where they became distinguished leaders of theoretical physics research.
文摘一、未来城市的预想,法国理论家保罗·维利里奥(Paul Virilio)从速度政治学(politics of speed)的角度出发,将现代性的本质界定为“后勤学的”(logistical),即只有物流技术所带来的流动性和加速性才是现代社会所建立的前提条件。后勤学最早来自于冷兵器时期的战争,源于1837年出版的著作《战争的艺术》(Précis de l’art de la guerre),指的是跟随随时移动的作战部队,对物资和军需品进行供给、运输和分配的一套组织规划技术。不过如今,后勤学已经蔓延至我们社会生活方方面面的细节中,远远超越于战争的狭隘领域。
