pipelineormountedalongthesupportingstructureofa bridge,featurealinearsensorarrangement.Economical power use of sensor nodes is essential for long-lasting operation. In this paper, we present MERR (Minimum EnergyRelayRouting),anovelapproachtoenergy-efficient dataroutingtoasinglecontrolcenterinalinearsensor topology.Basedonanoptimaltransmissiondistance,relay paths are established that aim for minimizing the total powerconsumption.WestudyMERRbybothstochastic analysis and simulation, comparing it to other possible approachesandatheoreticallyoptimalprotocol.Wefind thatMERRconsumes80%lesspowerthanconventional approachesandperformsclosetothetheoreticaloptimum forpracticablesensornetworks.

cycle of highly reusable services and service components. Existing approaches, such as the SOA triangular model2 and various hybrid system integrating methods,3–5 provide high-lev-el guidance instead of detailed instructions. Over the past 50 years, researchers have estab-

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, 1} data. This is an important problem withmany applications, e.g., in paleontology, where we chronologically order fossil sites by minimizing Lazarus counts.We present the experimental results of our method on paleontological data, and show that it outperforms existing ap-proaches. The techniques developed here are general and can be abstracted for mining partial orders in any setting. 1.

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HIS PAPER DESCRIBES statistical methods of auto-matic recognition (transcription) of continuous speech that have been used successfully by the Speech Process-ing Group at the IBM Thomas J. Watson Research Center. The

Alto, the Systems Research Center (SRC). Other Digital research groups are located in Paris (PRL) and in Cambridge,

properties; for reviews, see Graham (1989), Olzak and Thomas (1986), Pokorny and Smith (1986), and Watson (1986). Researchers in perception have found aspects of visual stimuli that are processed pre-attentively (Beck, 1966; Bergen & Julesz, 1983; Julesz & Bergen, Motion Color Binocular disparity

Co analogue, is located on a crystallographic inversion center. The complex is octahedral with basically no distortion, and the methanol molecules are in trans positions with respect to one another. The planes of the-diketonate and the ZnO4 unit are tilted by 18.64 (10) against each other. O—H O

, that translate information into a common object model, that combine information from several sources, that allow browsing of information, and that manage constraints across heterogeneous sites. Tsimmis is a joint project between Stanford and the IBM Almaden Research Center.