. This work shows that it is possible to maintain videoconferences with reasonable quality across packet-switched networks without requiring special support from the network such as resource reservation or admission control.

) requirement in a dynamic multi-hop mobile environment. The proposed algorithms work with imprecise state information. Multiple paths are searched in parallel to find the best qualified one. Fault-tolerance techniques are brought in for the maintenance of the routing paths when the nodes move, join, or leave

and nitrogen cycles through a forest ecosystem. The model, FOREST-BGC, treats canopy interception and evaporation, transpiration, photosynthesis, growth and maintenance r spiration, carbon alloc-ation above and below-ground, litterfall, decomposition and nitrogen mineralization. The model uses leaf area index

implementation languages and ranging from 256 K up to 13Mb of source code size. Keywords: Software maintenance, code duplication detection, code visualization 1. Code Duplication Detection Duplicated code is a phenomenon that occurs frequently in large systems. The reasons why programmers duplicate code

that D1HT has reasonable maintenance bandwidth requirements even for multi-million node systems while presenting up to one order of magnitude less bandwidth overhead than previous single hop DHT. 1

, and present a Quarantine-like mechanism to reduce the overhead caused by volatile peers. Our analyses show that D1HT has reasonable maintenance bandwidth requirements even for very large systems, while presenting at least twice less bandwidth overhead than previous single hop DHT. 1.

generations. Developing power efficient products will require consideration of static power in the earliest phases of design, including architecture and microarchitecture definition. We propose a simple equation for estimating static power consumption at the architectural level: Pstatic = VCC ⋅ N ⋅ kdesign

Information Integration is one of the core problems in distributed databases, cooperative information systems, and data warehousing, which are key areas in the software development industry. Two critical factors for the design and maintenance of applications requiring Information Integration

that independently motivated requirements on reason maintenance systems allow us to gracefully circumvent Gärdenfors’s triviality result.

Software systems dealing with distributed applications in changing environments normally require human supervision to continue operation in all conditions. These (re-)configuring, troubleshooting, and in general maintenance tasks lead to costly and time-consuming procedures during the operating