The ultra-lightweight construction of large, deployable space structures is a fundamental prerequisite for the realization of Solar Sail propulsion concepts. In addition to the functionality of the deployment technique and the development of control concepts, lightweight aspects and their technical implementation play a key role in future Solar Sail missions. A further development of the set-up...

Up to now, most of the research efforts to improve performance of programs based on hardware transactions were devoted to designing new hybrid transactional memories and transactional lock elision algorithms to speedup software fallback paths. Unfortunately hardware transactions remain insufficiently exploited, limited especially on microarchitectures where the access set is particularly limite...

Recently, several uses for intercraft Coulomb forces have been explored. Proposed applications have ranged from creating static formations of many spacecraft to steerable nanosat deployment systems. This paper considers the use of Coulomb forces for creating space structures. Unlike conventional space structures, these ”virtual space structures” have no physical connections. Instead, they are h...

Reducing duplicated data of database backups is an important application scenario for data deduplication technology. NewSQL is an emerging database system and is now being used more and more widely. NewSQL systems need to improve data reliability by periodically backing up in-memory data, resulting in a lot of duplicated data. The traditional deduplication method is not optimized for the NewSQL...

The Antarctic plateau is a new frontier for astronomy, offering superior observing conditions to those of any other groundbased site across most of the electromagnetic spectrum. The established inland Antarctic stations of Amundsen-Scott and Vostok are now being joined by new stations at Dome A, Dome C and Dome F. Plans to deploy large telescopes are already well advanced, and within a decade s...

In this paper, using vortex blob method (VBM), turbulent flow in a channel is studied and physical concepts of turbulence are obtained and discussed. At first, time-averaged velocities,  and , and then their fluctuations are calculated. To clarify turbulence structures, velocity fluctuations and  are plotted. It is observed that turbulence structures occupy different positions and move with con...

Recent data have shown that Dome C, on the Antarctic plateau, is an exceptional site for astronomy, with atmospheric conditions superior to those at any existing mid-latitude site. Dome C, however, may not be the best site on the Antarctic plateau for every kind of astronomy. The highest point of the plateau is Dome A, some 800 m higher than Dome C. It should experience colder atmospheric tempe...

Using an ocean–atmosphere coupled general circulation model, air–sea interaction processes associated with the Atlantic meridional mode are investigated from a new viewpoint of its link with the Guinea Dome in the northern tropical Atlantic. The subsurface thermal oceanic dome develops off Dakar from late spring to late fall owing to wind-induced Ekman upwelling. Its seasonal evolution is due t...