Existing position-based routing algorithms, where packets are forwarded in the geographic direction of the destination, normally require that the forwarding node knows the positions of all neighbors in its transmission range. This information on direct neighbors is gained by observing beacon messages that each node sends out periodically. Several beaconless greedy routing schemes have been prop...

PURPOSE We report on an integrated system for real-time adaptive radiation delivery to moving tumors. The system combines two promising technologies-three-dimensional internal position monitoring using implanted electromagnetically excitable transponders and corresponding real-time beam adaptation using a dynamic multileaf collimator (DMLC). METHODS AND MATERIALS In a multi-institutional acad...

UNLABELLED Aerosol drug delivery via high flow nasal cannula (HFNC), bubble continuous positive airway pressure (CPAP), and synchronized inspiratory positive airway pressure (SiPAP) has not been quantified in spontaneously breathing premature infants. OBJECTIVES The purpose of this study was to compare aerosol delivery via HFNC, bubble CPAP, and SiPAP in a model of a simulated spontaneously b...

Consider an agent with a forward position of an illiquid asset (e.g. a commodity) that has to be closed before delivery. Suppose that the liquidity of the asset increases as the delivery date approaches. Assume further that the agent has two possibilities for hedging the risk inherent in the forward position: first, he can enter customized forward contracts; second, he can acquire standardized ...

Lead time reduction is a key concern of many industrial buyers of capital facilities given current economic conditions. Supply chain initiatives in manufacturing settings have led owners to expect that dramatic reductions in lead time are possible in all phases of their business, including the delivery of capital materials. Further, narrowing product delivery windows and increasing pressure to ...

premature rupture of membrane (prom) is one of the complications of pregnancy which is blamed for increasing the rate of cesarean. therefore, we studied pregnant women who were admitted in shariati hospital during march 1996 and march 2000, to determine the rate of cesarean delivery in cases with prom after 36th week of pregnancy (term prom). in a retrospective study, we included pregnant women...

Received Mar 15 th , 2013 Revised Apr 10 th , 2013 Accepted Jun 26 th , 2013 Broadcasting is one of the funmental operations in wireless ad hoc networks, where a node disseminates a message to all other nodes in the network. It is a common operation for route establishment and for sending control and emergency messages. The primary goal of broadcasting is to successfully reduce the number of tr...