In recent decades, geophysical investigations have detected wide magma reservoirs beneath quiescent calderas. However, the discovery of partially melted horizons inside the crust is not sufficient to put constraints on capability of reservoirs to supply cataclysmic eruptions, which strictly depends on the chemical-physical properties of magmas (composition, viscosity, gas content etc.), and thu...

Mt. Cameroon is one of the most active volcanoes in Africa and poses a possible threat to about half a million people in the area, yet knowledge of the volcano's underlying magma supply system is sparse. To characterize Mt. Cameroon's magma plumbing system, we employed mineral-melt equilibrium thermobarometry on the products of the volcano's two most recent eruptions of 1999 and 2000. Our resul...

A fundamental piece of information required in intelligent storage systems is the liveness of data. We formalize the notion of liveness within storage, and present two classes of techniques for making storage systems liveness-aware. In the explicit notification approach, we present robust techniques by which a file system can impart liveness information to storage through a “free block” command...

The ideal storage system is always available, is incrementally expandable, scales in performance as new components are added, and requires no management. Existing storage systems are far from this ideal. The recent introduction of low-cost, scalable, high-performance networks allows us to re-examine the way we build storage systems and to investigate storage architectures that bring us closer t...

Traditionally, there has been a single guarantee assumed for all data stored in a storage device: usually, the guarantee is that the data will remain unchanged and accessible. My work is explores applications that can continue to behave correctly even when the underlying storage does not meet this condition. Application data is classified based on the guarantees that the application requires; I...

Acetylene, an important petrochemical raw material, is very difficult to store safely under compression because of its highly explosive nature. Here we present a porous metal-organic framework named FJI-H8, with both suitable pore space and rich open metal sites, for efficient storage of acetylene under ambient conditions. Compared with existing reports, FJI-H8 shows a record-high gravimetric a...

Remote offices and branch offices, like retail stores, bank branches, or manufacturing plants, are crucial assets in company operations and have unique infrastructure challenges. The major challenge is that these locations are geographically distributed, with few or no IT staff members available. This situation can be exacerbated by often difficult operating conditions such as unreliable wide a...

This paper presents an overview of wireless local-area networks (LANs) and wireless personal area networks (PANs), with emphasis on the two most popular standards: IEEE 802.1 1, and Bluetooth. While there are many such surveys in the current literature and online, we attempt here to present wireless LANs and PANS in a unified fashion as a viable alternative to wired LANs, while stressing the re...