Temple of Artemis image carried through the streets and surrounded by maidens. In the Roman Imperial era, the emperor Commodus lent his name to the festival games, and might have sponsored them. From the Greek point of view, the Ephesian Artemis is a distinctive form of their goddess Artemis. In Greek cult and myth, Artemis is the twin of Apollo, a virgin huntress who supplanted the Titan Selene as goddess of the Moon. At Ephesus, a goddess whom the Greeks associated with Artemis was venerated in an archaic, pre-Hellenic cult image that was carved of wood (a "xoanon") and kept decorated with jewelry.
Equating origin. It is common in educational assessment to employ tests in order to assess different groups of students with the intention of establishing a common scale by equating the origins, and when appropriate also the units, of the scales obtained from response data from the different tests. The process is referred to as equating or test equating. In item response theory, two different kinds of equating are horizontal and vertical equating. Vertical equating refers to the process of equating tests administered to groups of students with different abilities, such as students in different grades (years of schooling). Horizontal equating refers