[no abstract available]

Service routing across multiple network domains often requires redirection of service requests. Service request redirection can be achieved with multiple single hop redirection as in Session Initiation Protocol (SIP) or as a single redirection of multiple hops as in Service Network Graph (SNG). For efficiency and manageability, it is desirable to hold all the redirection information and knowled...

This paper describes a llew approach to the design of multi-element resonant reflectors. These mirrors provide an effective meansof controlling the spectral spread of high-gain laser oscillators, but thecomplexityof the reflectivity as a function of wavelength R(h) hasmade the design of these systems rather difficult. However, we show ManuscriptreceivedApril25, 1...

This paper presents an approach for combined mass and energy integration in process synthesis and illustrates it at the thermochemical production of crude synthetic natural gas (SNG) from lignocellulosic biomass and its separation in a membrane cascade. Based on a general process superstructure, the design problem is decomposed into non-linear unit models whose energy and mass balances are used...

The most costly aspect of gathering information over the Internet is that of transferring data over the network to answer the user’s query. We make two contributions in this paper that alleviate this problem. First, we present an algorithm for reducing the number of information sources in an information gathering (IG) plan by reasoning with localized closed world (LCW) statements. In contrast t...

Several Schur complement-based preconditioners have been proposed for solving (generalized) saddlepoint problems. We consider probing-based methods for approximating those Schur complements in the preconditioners of the type proposed by [Murphy, Golub and Wathen ’00], [de Sturler and Liesen ’03] and [Siefert and de Sturler ’04]. This approach can be applied in similar preconditioners as well. W...

BACKGROUND Wild plant gathering is an essential element in livelihood strategies all over the world. However due to changing circumstances in Europe, the reason for gathering has altered from one of necessity in the past to a pleasurable activity today. Wild plant gathering has therefore also received renewed attention as a form of intangible cultural heritage expressing local preferences, habi...

Information retrieval and database technology has long been interested in the problems of retrieving relevant information from vast data and information stores. The availability of information on the Internet, however, has spawned a new technological need: information gathering. Information gathering involves searching distributed, possibly heterogeneous data sources to answer a query. This pap...

K e y w o r d s P r i v a c y , Electronic data gathering, E-voting protocols, Discrete logarithm. We would like to thank the editor and the reviewers for their concern. Moreover, we acknowledge the partial support by the "Archimedes" research programme awarded by the Greek Ministry of Education and Religious Affairs and the European Union. 0895-7177/05/$ see front matter (~ 2005 Elsevier Ltd. ...