Neighbourhoods can facilitate or constrain moderate-to-vigorous physical activity (MVPA) among children by providing or restricting opportunities for MVPA. However, there is no consensus on how to define a child's neighbourhood. This study examines the influence of the neighbourhood built environment on objectively measured MVPA among 435 children (aged 9-14 years) in London (ON, Canada). As th...

In this paper, the most appropriate buffer structure, page replacement policy and buffering scheme for closest pairs queries, where both spatial datasets are stored in R-trees, are investigated. Three buffer structures (i.e. single, hybrid and by levels) over two buffering schemes (i.e. local to each R-tree, and global to the query) using several page replacement algorithms (e.g. FIFO, LRU, 2Q,...

In Delay Tolerant Networks (DTN) disruptions may happen frequently as end to end path is not available all the time. Thus, delays can also be extended due to its environment nature like deep space, underwater, ocean sensor networks. In manage to achieve message delivery probability in such demanding networking situations , researchers have proposed the design of store-carry-and-forward routing ...

A high performance packet switching architecture called the Pipeback switch is proposed. This architecture ensures lossless packet delivery while maintaining linear buffer complexity. The Pipeback switch improves upon the popular Knockout switch proposed by Y. Yeh et al. Both switches use an N × N space division fabric with output queuing and both designs are motivated by the observation that t...

by Jin Liu, Ph.D. Washington State University DECEMBER 2007 Chair: José G. Delgado-Frias High performance novel dynamically allocated multi-queue (DAMQ) buffer schemes for systems with network on chip (NoC) have been proposed and evaluated in this dissertation. An analytical model to predict performance of a NoC where wormhole switching technique and fully adaptive routing protocols has been de...

The buffer generation algorithm is a fundamental function in GIS, identifying areas of a given distance surrounding geographic features. Past research largely focused on buffer generation algorithms generated in a stand-alone environment. Moreover, dissolved buffer generation is dataand computing-intensive. In this scenario, the improvement in the stand-alone environment is limited when conside...

Cloud computing has become an emerging virtualization-based computing paradigm for various applications such as scientific computing and databases. Buffer management is an important factor for the I/O performance of the virtualized platform. In this study, we propose to leverage the memory and the computation power of the graphics processors (GPUs) to improve the effectiveness of buffer managem...

The limited lifespan is the Achilles’s heel of Solid State Drive (SSD) based on NAND flash memory. NAND flash has two drawbacks that degrade SSD’s lifespan. One is the out-of-place update. Another is the sequential write constraint within a block. To extend the lifespan, SSD usually employs a write buffer to reduce write traffic to flash memory. However, existing write buffer schemes only pay a...