Issaouane Erg with foreign assistance, including from Korea and Spain (Repsol signed an agreement to invest and explore in 1990). The oilfield has been in production since late 1998. Issaouane Erg The Issaouane Erg (also called Issaouane-N-Irrararene) is an approximately 38,000 km erg (sand sea) in Algeria's portion of the Sahara desert, located at . The Issaouane Erg is located near the Ahaggar Mountains. It is part of a major dune field that extends from Issaouane Erg in the north to the Sudanese Erg in the south, flanked by the Libyan erg of Murzuq. In the north, the Issaouane Erg ends at
ERG theory ERG theory ERG theory is a theory in psychology proposed by Clayton Alderfer. Alderfer further developed Maslow's hierarchy of needs by categorizing the hierarchy into his ERG theory (Existence, Relatedness and Growth). The existence group is concerned with providing the basic material existence requirements of humans. They include the items that Maslow considered to be physiological and safety needs. The second group of needs is those of relatedness – the desire people have for maintaining important interpersonal relationships. These social and status desires require interaction with others if they are to be satisfied, and they align with Maslow's social need