An analysis of a consecutive series of 66 swimming pool immersion accidents is presented; 74% of these occurred in in-ground swimming pools. The estimated accident rate per pool is five times greater for in-ground pools compared with above-ground pools, where pools are inadequately fenced. Backyard swimming pools account for 74% of pool acidents. Motel and caravan park pools account for 9% of c...

The one-sided communication operations in MPI are intended to provide the convenience of directly accessing remote memory and the potential for higher performance than regular point-to-point communication. Our performance measurements with three MPI implementations (IBM MPI, Sun MPI, and LAM) indicate, however, that one-sided communication can perform much worse than point-to-point communicatio...

We give a sound and complete procedure for fence insertion for concurrent finite-state programs running under the PSO memory model. This model allows “write to read” and “write-to-write” relaxations corresponding to the addition of an unbounded store buffers between processors and the main memory. We introduce a novel machine model, called the Hierarchical Single-Buffer (HSB) semantics, and sho...

In multiprocessor systems with weakly consistent shared memory, memory fence (also know as barrier) instructions are necessary to establish memory consistency at synchronization points in a parallel program. Programs that follow an acquire-release synchronization protocol (e.g., Java) make frequent use of such fence instructions and hence the thrifty use and efficient implementation of such ins...

African buffalo were introduced into a wildlife conservancy in the southeast of Zimbabwe in an effortto increase the conservancy's economic viability, which is primarily based on eco-tourism. The buffalo were infected with SAT serotypes (SAT-1, SAT-2 and SAT-3) of foot and mouth disease (FMD) virus, and in order to isolate the conservancy and prevent the transmission of FMD to adjacent populati...

The carbon monoxide affinities of iron complexes of meso-tetra (alpha, alpha, alpha, alpha-o-pivalamidophenyl)porphyrin (the "picket fence" porphyrin) and of a "picket fence" porphyrin derivative with an appended axial base have been measured in solution and compared with the CO affinities of various hemoproteins. The model complexes bind CO with much greater affinity than normal hemoproteins; ...

We examined how grammatical aspect and visual perspective taking (firstor third-person) influence the ability to imagine accomplishments. Our main prediction was that it would be easier to imagine completed (I had built the fence.) than ongoing events (I was building the fence.) because accomplishments include natural temporal end points. Slow cortical brain potentials were examined as an index...

In-network data processing and event detection on resourceconstrained devices are widely regarded as distinctive and novel features of wireless sensor networks. The vision is that through cooperation of many sensor nodes the accuracy of event detection can be greatly improved. On the practical side however, little real-world experience exists in how far these goals can be achieved. In this pape...