An automatic angle adjustment unit engages with and drivers a horizontal adjustment-engagement member and a vertical adjustment-engagement member of an object detection device from the exterior. A monitoring system of the primary service provider receives detailed capacity and health statistics from any CDN under the operational control of the primary service provider, receives aggregate capacity and health statistics from other CDNs not under the operational control of the primary service provider. The junction diode is vertically oriented and is of reduced height, between about 500 angstroms and about 3500 angstroms. Conductive array lines in the cross-point memory array are electrically coupled with the active devices in the base layer. There are provided organic electroluminescence devices having a high luminance of light emitted and a high efficiency of blue light emission and exhibiting a long life, as well as novel aromatic amine derivatives capable of realizing such organic electroluminescence devices.