This paper focuses on demand management of electricity in consumer groups that form a cooperative. We propose a novel multiagent coordination algorithm to shape the energy consumption of the cooperative in the presence of energy generation and storage. To coordinate individual consumers under incomplete information and optimize the energy storage decision, we decompose the problem to two subpro...

Electricity cannot yet be stored on a large scale, but technological advances leading to cheaper and more efficient industrial batteries make grid-level storage of electricity surpluses a natural choice. Because electricity prices can be negative, it is unclear how the presence of negative prices might affect the storage policy structure known to be optimal when prices are only non-negative, or...

A decade has passed since the attacks of 9/11. The heightened curiosity about terrorism has seen an avalanche of books and articles in recent years. In this article, after tracing the evolution of research in the area of social conflict, in general, and terrorism, in particular, I attempt to understand if the collected wisdom has altered the views of those who make public policies in the US. Ho...

Personal location data is stored as the result of using equipment that many people now own or have access to. Typically this data contains details of identity, location and the time the equipment was used. The data is usually stored in a central repository, held by the organisation owning the network or related equipment, and it is assumed that access controls are in place and privacy policies ...

The postMessage mechanism in HTML5 enables Web content from different origins to communicate with each other, thus relaxing the same origin policy. It is especially popular in websites that include third-party content. Each message contains accurate information about its origin, but the receiver must check this information before accepting the message. The responsibility for preventing cross-or...

We study the properties, design, implementation and performance of trusted storage, an architecture that ensures the integrity, confidentiality and accountability of data, by enforcing storage policies at the lowest layer of a storage system, within the hardware and firmware of disk enclosures. The guarantees provided by trusted storage depend only on the integrity and correctness of the truste...

Policy-based storage management has been advertised as the silver bullet to overcome the complexity that limits the amount of storage that can be managed by system administrators. Key to this approach are: a mechanism to specify quality of service (QoS) goals; a canonical virtual model of storage devices and operations; and the mapping of the high level QoS goals to low level storage device act...

Commodity storage-assets can be either physical storage-facilities, or contracts guaranteeing their use. Merchants employ them to support their commodity-trading activities in wholesale markets, which are characterized by notoriously volatile prices. Managing a storage asset requires determining an inventory-management policy, which, given a realization of the commodity price, consists of choos...

A typical strategy for dealing with commodity surpluses is to store them for future sale; though electricity cannot yet be stored on a large scale, this storage strategy will become a natural choice for dealing with electricity surpluses. However, because electricity prices can be negative, there exists another potential strategy: To buy electricity surpluses at negative prices and dispose of t...