An Huynh

This article considers semi-flexible composite (SFC) pavement materials made with 11 reclaimed asphalt planings (RAP) and geopolymer cement-based grouts. Geopolymer grouts were 12 developed and used to fill the internal void structure of coarse RAP skeletons with varying levels 13 of porosity. The geopolymer grouts were formulated at ambient temperature using industrial by14 products to offer economic and environmental savings relative to conventional Portland cement15 based grouting systems. They were characterised on flowability, setting time and compressive 16 strength. The effect of grout and RAP on SFC material performance was evaluated using permeable 17 porosity, compressive strength and ultrasonic pulse velocity. SFC performance was significantly 18 influenced by both grout type and RAP content. Improved performance was associated with 19 mixtures of high-flowability/high-strength grout and low RAP content. A practical limitation was 20 identified for combination of grout wi...

Modern task parallel programming models provide sophisticated runtime task schedulers for handling the scheduling of logical tasks on a large and varying number of hardware parallel resources at runtime. The performance of these programming models increasingly rely on how fast their runtime schedulers do their job. The more delay a scheduler incurs in matching a ready task to a free processor core at any point in time, the more impact it causes to the program's parallel execution. We have developed a tool that is able to detect these delayed intervals caused by the scheduler in a parallel execution, and spot them specifically on two kinds of visualizations: the logical task graph captured at runtime (DAG visualizations) and time-series visualizations of threads (timelines). By further analyzing positions of these delays on those visualizations the tool could identify possible scheduling issues in the scheduler that causes these delays, yielding improvement insights for the devel...

The dynamic of the complex system comprised of the International Space Station and the moving Mobile Transporter with attached Crew Equipment Transportation Aid cart offers related new challenge in simulation modeling. This paper addresses this issue by presenting dynamic ...

In support of both the Space Shuttle and International Space Station programs, a set of generic multibody dynamics algorithms integrated within the Trick Simulation Environment have addressed a variety of on-orbit manipulator simulation requirements for engineering analysis, ...