Current serving systems lack the ability to bulk load massive immutable data sets without affecting serving performance. The performance degradation is largely due to index creation and modification as CPU and memory resources are shared with request serving. We have extended Project Voldemort, a general-purpose distributed storage and serving system inspired by Amazon’s Dynamo, to support bulk...

Remarkably higher expected shares of variable renewable energy sources for electricity generation (RES-Electricity) than those available today will be a great challenge for the European power system. Bulk electricity storage technologies— that is, pumped hydro energy storage—are considered a key component while facing these future challenges. The conducted analysis is based on the modeling resu...

In the past year, the researchers at the Center for Electromechanics at The University of Texas at Austin (UT-CEM) and the Nanotech Institute at The University of Texas at Dallas (UTD) continued research efforts on improved flywheel designs and flywheel materials to meet energy storage requirements for the grid. UT-CEM’s efforts focused on developing design codes and methods for incorporating h...

In communication networks that span large geographical regions, transfer of bulk data is often costly and hard to manage. One prominent reason for bandwidth contention among long-lasting flows, between short-lived ones on inter-datacenter links. Delaying the off-peak hours by temporarily storing at edge network can help reduce during peak hours, improve overall utilization utility. Although ext...

Electric energy storage systems such as batteries can significantly impact society in a variety of ways, including facilitating the widespread deployment of portable electronic devices, enabling the use of renewable energy generation for local off grid situations and providing the basis of highly efficient power grids integrated with energy production, large stationary batteries, and the excess...

The objective of this work was to evaluate the hydrogen storage capacities of various activated carbon materials in form of granules, powders, fibers and clothes under cryogenic and ambient temperature conditions (77K 293K), at pressures up to 30Bar. The experimental data were analyzed for carbon samples covering a wide range of BET surfaces and microporous volumes. At 293K, the storage capacit...

We investigate the hydrogen adsorbing characteristics of single-walled carbon nanotubes (CNTs) through fundamental molecular dynamics simulations that characterize the role of ambient pressure and temperature, the presence of surface charges on the CNTs, inclusion of metal ion interconnects, and nanocapillary effects. While the literature suggests that hydrogen spillover due to the presence of ...