is intended as a sophisticated simulator of the demand component of a basin for the design and testing of water management policies, as a test case for a potential actual market and as a sandbox for the development of agreement technologies. This paper outlines the aims of the mWater system, describes its

With the significant advances in Information and Communications Technology (ICT) over the last half century, there is an increasingly perceived vision that computing will one day be the 5th utility (after water, electricity, gas, and telephony). This computing utility, like all other four existing

Data replication is a key technology in distributed data sharing systems, enabling higher availability and performance. This paper surveys optimistic replication algorithms that allow replica contents to diverge in the short term, in order to support concurrent work practices and to tolerate

with wavelengths from near-infrared (1 m) to ultraviolet wavelengths with a power law of one to three depending on the source 3, 25 , thus giving the brownish colour to the sky. Unlike the greenhouse effect of CO2, which leads to a positive radiative forcing of the atmosphere and at the surface 26 with moderate

This paper describes a unified model for role-based access control (RBAC). RBAC is a proven technology for large-scale authorization. However, lack of a standard model results in uncertainty and confusion about its utility and meaning. The NIST model seeks to resolve this situation by unifying

to negotiate creation, monitor properties, and manage lifetime. We also show how such DVEs can be implemented in a variety of technologies— sandboxes, virtual machines, or simply Unix accounts—and evaluate costs associated with these different approaches. DVEs provide a basis for both customization of a remote

This paper studies the impact of a regional free trade agreement, MERCOSUR, on technology upgrading by Argentinean firms. To guide empirical work, I introduce technology choice in Melitz’s (2003) model of trade with heterogeneous firms. The joint treatment of the technology adoption and exporting

agreement within a factor of 2 over the aerosol source areas and outflow regions. While there are clear differences among the satellite products, a major discrepancy between the model and the satellite data is that the model shows a stronger variation of � from source to remote regions. Quantitative

objectives of the many stakeholders involved. We are approaching this problem by building an open multi-agent system, mWater, that is designed as a regulated environment where autonomous agents trade rights for the use of water in a closed basin, and resolve the conflicts derived from the trading and use

and Technology Sandbox where student lab assistants are employed as staff of a startup company, whose responsibilities include not only tutoring, but managing the technology and business infrastructure, publicity, and day-to-day operations of the facility. Students who frequent the facility go for tutoring