OBJECTIVES The semiprivate health system in Iran has created an opportunity for unnecessary uses of advanced medical equipments including magnetic resonance imaging (MRI). This study aimed to evaluate the evidence for MRI overuse in private diagnostic imaging centers in Tehran, Iran. The objectives of this study were to determine the frequency of use of MRI scans for different complaints and to...

Taxicab service plays a vital role in public transportation by offering passengers quick personalized destination service in a semiprivate and secure manner. Taxicabs cruise the road network looking for a fare at designated taxi stands or alongside the streets. However, this service is often inefficient due to a low ratio of live miles (miles with a fare) to cruising miles (miles without a fare...

Eta Kappa Nu is a unique membership organization dedicated to encouraging and recognizing excellence in the electrical and computer engineering fields. Student members are selected on the basis of scholastic standing, character, and leadership. Through a variety of service programs and leadership training, student members develop lifelong skills that better prepare them for life post-graduation...

This paper is concerned with the three-way trade-off between coordination, specialization and adaptation, and its implications for organizational design. Every organized activity gives rise to two conßicting requirements: the division of labor into manageable tasks and the coordination of these tasks to ensure harmonious execution. In a stable environment, however, coordination can be trivially...

People with similar conceptions of life or shared interests organize themselves in various ways into associations. This is also true of migrants who form organizations because of their common cultural, political, economic or social interests and values. Roughly one-fifth of the German population has a so-called migration background which means that they can point to their own experiences with m...

Eta Kappa Nu is a unique membership organization dedicated to encouraging and recognizing excellence in the electrical and computer engineering fields. Student members are selected on the basis of scholastic standing, character, and leadership. Through a variety of service programs and leadership training, student members develop lifelong skills that better prepare them for life post-graduation...

The Transportation Research Forum, founded in 1958, is an independent, nonprofit organization of transportation professionals who conduct, use, and benefit from research. Its purpose is to provide an impartial meeting ground for carriers, shippers, government officials, consultants, university researchers, suppliers, and others seeking exchange of information and ideas related to both passenger...

The paper describes a research project which conducted participatory design in a non-profit organisation based on the work of volunteers. The project is analysed by identifying contradictions in the course of the project, and then fitting these contradictions into the activity theory based, developmental work research framework. It is concluded that the perspectives of contradiction and activit...