To provide an organic electroluminescence device having high emission luminance, high heat resistance, excellent high-temperature storage stability, and a long lifetime, and an aromatic amine derivative for realizing the device. The present invention relates to such retroviral protease inhibitors and, more particularly, relates to selected novel compounds, composition and method for inhibiting retroviral proteases, such as human immunodeficiency virus protease, prophylactically preventing retroviral infection or the spread of a retrovirus, and treatment of a retroviral infection. The baseband unit processes the wireless signal group to generate a position signal. A current may be run through the second conductive lines to increase the temperature of the second material to a temperature greater than the second material Curie temperature, causing the second material to lose its ferromagnetic properties, providing increased write selectivity to the memory array.