Parks and protected areas visitation in the United States has increased substantially over past several decades, dramatically within few years. This expansion raises concerns regarding influence of social, situational, ecological factors upon visitor behaviors, decision-making, overall experiences. study investigated relationship between three influencing visitors’ coping behaviors satisfaction...

We adapted the unification procedure of Huet for a family of explicit substitutions (ES) calculi. The novelty of this adaptation is that it works for calculi with explicit substitutions that belong to the paradigm known as “at a distance”. In this kind of calculi, which have attracted quite some attention due to their simplicity and applicability, the substitution operation is not propagated ov...