This study evaluates the impact of the 65-mph speed limit on traffic safety. Using data for the years 1981 to 1995 for all 50 states, a pooled time series analysis is conducted. Separate models are estimated for state fatality rates on four categories of roads: rural interstate highways, rural noninterstate roads, all roads except for rural interstate highways, and all roads. It is reported tha...

OBJECTIVES To gain a better understanding of the state-by-state differences in allowable delegated activities for Certified Nurse Aides (CNAs) working in long-term care settings, this exploratory descriptive study assessed what are the allowable tasks for CNAs based on findings from each state board of nursing. Specifically, findings from each state determined whether the care tasks allowed wer...

There is an old fable about a stag that was very proud of his antlers. He used to stand at the edge of a pool and look down in the water to admire his image. As he indulged in admiration of their reflected glory, he was repeatedly distraught as his gaze also took in the reflection of his forelegs, which he considered spindly and ugly. One day, a mountain lion crept to the water’s edge and the s...

the contact between major settlements in the central plateau of iran, especially in desert areas, was not possible without having a secure communication system. in this regard, designing communication networks through constructing secure roads with halfway caravansarais in desert areas, usually without secure underground and surface water supply, needed special insights and provisions. iranians...