People who are members of a group, and identify with it, behave differently from people in isolation. The way in which the behavior differs depends in subtle ways from the way in which the nature of the group is perceived, as well as its salience, and also on the way in which people perceive that group membership and observation affects the behavior of others. We study these hypotheses in a str...

We describe a group membership protocol, called the timewheel group membership protocol, for a timed asynchronous distributed system. This protocol is a part of the timewheel group communication service that supports multiple group communication semantics simultaneously. The timewheel group membership protocol is unique in several respects. First, it has been designed for a timed asynchronous d...

We present a model of distributed systems intended for the description of group membership services. The model incorporates a generalization of failure detectors 9], which we call oracles. Oracles provide information about processes that may be included into or excluded from the group. Based on this model, we provide a speciication of a group membership service in asynchronous systems augmented...

Can people influence others solely by virtue of shared group membership? To address this and related questions, we offer a theory of group-mediated social influence and then test it in a standardized collective task setting. The theory capitalizes on uncertainty reduction principles found in two longstanding social psychological traditions: social identity theory and status characteristics theo...

driven precast reinforced concrete piles (dprcp) is extensively used as a foundation for bridges constructed over canals in egypt in order to avoid the diversion of water canals. the objectives of this research include identifying the main activities of dprcp execution in the bridge-construction industry in egypt and the risk factors affecting them. in addition, assessment of the effects of the...