This study has three main objectives: 1 to develop new, theory-based, queuing relationships for the quality of flow on two-lane rural highways; 2 to estimate the relationships both from the empirical data that were collected on 15 two-lane rural highways and from the queuing models that were developed; and 3 to propose a new level-of-service variable that measures the quality of the flow both i...

pupose: this research aims to investigate how users expand their queries when encountered with irrelevant retrievals and through examine the degree of match between users' expanded subject queries and the list of persian subject headings. furthermore, it compares the patterns of query expansion in two subject areas: 1) agriculture (applied sciences); 2) education and psychology (humanities). me...