A methodology is presented for the modeling of flexible horizontal-axis, wind-turbine systems. The multi-rigid-body portions of the system are modeled as a system of interconnected rigid bodies using Autolev, a symbolic manipulator ideally suited for dynamics of multi-rigid-body systems. The flexible portions of the wind-turbine system are represented as beam finite elements. Equations are pres...

Multibeam satellite networks can extend the service coverage as deploying its spot beam. It is important to allocate the appropriate resources to downlink multibeams to prevent the unnecessary waste of resources in the satellite system. This paper presents an optimum beam allocation scheme for multi-spot beam satellite system, as beam bandwidth to be allocated is controlled dynamically. We appl...

I describe a new scheme for selectively isolating high density low longitudinal emittance beam particles in a storage ring from the rest of the beam without emittance dilution. I discuss the general principle of the method, called longitudinal momentum mining, multiparticle beam dynamics simulations and results of beam experiments. Multi-particle beam dynamics simulations applied to the Fermila...

In this paper, we investigate a multi-node multiantenna wireless-powered sensor networks (WPSN) comprised of one power beacon and multiple sensor nodes. We have implemented a real-life multi-node multi-antenna WPSN testbed that operates in real time. We propose a beam-splitting beamforming technique that enables a power beacon to split microwave energy beams towards multiple nodes for simultane...

∗ Research supported by the U.S. Department of Energy. † [email protected] Abstract A new optics design for beam injection into the University of Maryland Electron Ring (UMER) is proposed for multi-turn operations. We review the previous method where two pulsed and physically overlapped Panofsky quadrupoles (one is centered on the injector and the other is centered on the ring) are employed. Th...

Indicate any experiments that have physics goals similar to those in your proposal. We propose a measurement of the polarized electron beam asymmetry (the fifth response function, R LT ') in exclusive reactions on the nuclei of 3 He, 4 He and 12 C. The CLAS detector is an ideal instrument for survey measurements of these asymmetries because of its extensive out of plane capabilities and full an...

INTRODUCTION The lower ratio of dead load to live load than existing multi-girder bridges, wide girder spacing and simplified structural system of the twin-girder bridges can give rise to change of dynamic characteristics of the bridges. Wider girder spacing and changing of dynamic features will also effect on a vibration serviceability of the bridges. What is worse, according to running vehicl...