As one of the masterpieces for Don Delillo, Libra was regarded as a classic postmodern novel once after its publication. Based on Kennedy assassination, this novel mainly deals with the isolation and dissimilation fee...As one of the masterpieces for Don Delillo, Libra was regarded as a classic postmodern novel once after its publication. Based on Kennedy assassination, this novel mainly deals with the isolation and dissimilation feelings for the American citizens. As a representative postmodern novel, Libra＇s stylistic features and narrative strategies are both quite typical. This thesis will discuss its narrative angles, its narrative structure and its dialogue expressions in order to understand Libra＇s postmodern narrative technique.展开更多
The historical records of astronomical phenomena may play a significant role in comet identification.Getting an accurate result is based on many factors,of which the calculation of orbital elements is the most importa...The historical records of astronomical phenomena may play a significant role in comet identification.Getting an accurate result is based on many factors,of which the calculation of orbital elements is the most important.This paper presents a "Cross Reference" method in which the perturbation of Jupiter is the only considered factor used to attempt an efficient way of comet identification with ancient Chinese historical records.In this method,the records before and after the calculated result from orbital determination within the error range are compared with the historical records to find the correlated perihelion time,and then,with five other orbital elements at the perihelion time,the ephemeris is calculated.If the calculated ephemeris matches the historical records,it is concluded that the comet determined by orbital calculation is the same as the one recorded in history.With this method,three comets with four historical records have already been found.展开更多
文摘As one of the masterpieces for Don Delillo, Libra was regarded as a classic postmodern novel once after its publication. Based on Kennedy assassination, this novel mainly deals with the isolation and dissimilation feelings for the American citizens. As a representative postmodern novel, Libra＇s stylistic features and narrative strategies are both quite typical. This thesis will discuss its narrative angles, its narrative structure and its dialogue expressions in order to understand Libra＇s postmodern narrative technique.
基金supported by theNational Natural Science Foundation of China (Grant No.10821061)the National Basic Research Program of China (Grant No.2007CB815103)
文摘The historical records of astronomical phenomena may play a significant role in comet identification.Getting an accurate result is based on many factors,of which the calculation of orbital elements is the most important.This paper presents a "Cross Reference" method in which the perturbation of Jupiter is the only considered factor used to attempt an efficient way of comet identification with ancient Chinese historical records.In this method,the records before and after the calculated result from orbital determination within the error range are compared with the historical records to find the correlated perihelion time,and then,with five other orbital elements at the perihelion time,the ephemeris is calculated.If the calculated ephemeris matches the historical records,it is concluded that the comet determined by orbital calculation is the same as the one recorded in history.With this method,three comets with four historical records have already been found.
