TY - CHAP A1 - Boreale, Michele A1 - De Nicola, Rocco A1 - Pugliese, Rosario UR - http://dx.doi.org/10.1007/BFb0053544 M1 - 1378 Y1 - 1998/// AV - none TI - Asynchronous Observations of Processes SP - 95 T3 - Lecture Notes in Computer Science PB - Springer T2 - Foundations of Software Science and Computation Structures (FoSSaCS 1998) ED - Nivat, Maurice SN - 3-540-64300-1 ID - eprints348 EP - 109 N2 - We study may and must testing-based preorders in an asynchronous setting. In particular, we provide some full abstraction theorems that offer alternative characterizations of these preorders in terms of context closure w.r.t. basic observables and in terms of traces and acceptance sets. These characterizations throw light on the asymmetry between input and output actions in asynchronous interactions and on the difference between synchrony and asynchrony. ER -