Two-component model of the X-ray emissions for Fermi $\mathit {Fermi}$ -LAT selected blazars

Astrophysics and Space Science - The purpose of this paper is to study the Tsallis agegraphic dark energy with an interaction term between dark energy and dark matter in the DGP brane-world...     

浅谈大比例尺数字测图的应用及其减少误差的方法

结合工作实际对大比例尺数字测图的方法、误差来源及减少误差的方法进行讨论,并提出一些在实际工作中减少误差的方法。