You can get access to GW libraries' resources remotely even if you are in your home country. Please make sure to connect to the GW VPN. Then you will be able to get access to libraries' databases, eletronic books and etc.
You can also remotely use GW libraries' computers, especially when you want to use software such as ArcGIS, SPSS, NVIVO. Please see the instruction here.
Please contact Dr. Yan He at hey@gwu.edu if you need further help.