https://books.google.com.mx/books?id=GVRNZL5wDj0C&pg=PR6&lpg...

http://euro.ecom.cmu.edu/titles/titlebook.htm

Affiliate Faculty

1. A synonym for Non-Regular Faculty. "The affiliate faculty consists of persons holding academic appointments other than the regular faculty ranks eligible for tenure. They are appointed to perform some but not all of the duties associated with the function of regular, tenure eligible faculty." (Pacific Lutheran U.)

2. A synonym for Adjunct Faculty, applicable to persons whose titles include the term Affiliate. "The special status of 'Affiliate Faculty' may be awarded by the President ... to those persons whose employment is with a person or organization that is associated with the University. Affiliate status is awarded as a courtesy. Other than association with the University, Affiliate Faculty are not entitled to any of the rights and privileges of regular faculty. Affiliate Faculty shall not be employees or agents of the University and may not present themselves as such." (Nicholls St. U.) See also Senior Affiliate Faculty.

3. At some institutions, a term for faculty with Joint Appointments. "An affiliate faculty appointment recognizes a formal arrangement between a faculty member and a department or teaching unit outside that of the faculty member’s primary appointment. Ordinarily, only tenured faculty members are eligible for such an appointment." (American U.)

Si se refiere a la Western Michigan University, “Affiliate faculty” means persons who are administrative, professional or technical employees of Western Michigan University who are additionally appointed for one-year terms only, renewable at the sole discretion of the University, to perform specific assignments related to the instructional programs.

Habría que ver si es funcionario administrativo, técnico o docente.

Since 'profesor asociado' could back translate to 'associate professor' (the rank typically found above an 'assistant professor' at US universities), and since faculty could be either 'instructional' or 'non-instructional' (again, at US universities), perhaps 'personal asociado' would be the best option here, as the context doesn't appear to refer to a mere adjunct, also known as 'associate faculty' at many US colleges and universities.