500 research outputs found

    History of the Town of Cumberland, Maine

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    https://digitalmaine.com/cumberland_books/1009/thumbnail.jp

    Ambiguity-Avoidance: A Universal Constraint Extraction from NP Sequences

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    Proceedings of the 3rd Annual Meeting of the Berkeley Linguistics Society (1977), pp. 440-45

    Grammaticalization and Semantic Bleaching

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    Proceedings of the Fourteenth Annual Meeting of the Berkeley Linguistics Society (1988), pp. 389-40

    Metaphorical Models of Thought and Speech: A Comparison of Historical Directions and Metaphorical Mappings in the Two Domains

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    Proceedings of the Thirteenth Annual Meeting of the Berkeley Linguistics Society (1987), pp. 446-45

    Root and Epistemic Modals: Causality in Two Worlds

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    Proceedings of the Eighth Annual Meeting of the Berkeley Linguistics Society (1982

    Early Welsh Metrics and the Indo-European Poetic Tradition

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    Proceedings of the Eleventh Annual Meeting of the Berkeley Linguistics Society (1985), pp. 505-51

    Demonstration of the Zero-Crossing Phasemeter with a LISA Test-bed Interferometer

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    The Laser Interferometer Space Antenna (LISA) is being designed to detect and study in detail gravitational waves from sources throughout the Universe such as massive black hole binaries. The conceptual formulation of the LISA space-borne gravitational wave detector is now well developed. The interferometric measurements between the sciencecraft remain one of the most important technological and scientific design areas for the mission. Our work has concentrated on developing the interferometric technologies to create a LISA-like optical signal and to measure the phase of that signal using commercially available instruments. One of the most important goals of this research is to demonstrate the LISA phase timing and phase reconstruction for a LISA-like fringe signal, in the case of a high fringe rate and a low signal level. We present current results of a test-bed interferometer designed to produce an optical LISA-like fringe signal previously discussed in the literature.Comment: find minor corrections in the CQG versio

    Effects of Interplanetary Dust on the LISA drag-free Constellation

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    The analysis of non-radiative sources of static or time-dependent gravitational fields in the Solar System is crucial to accurately estimate the free-fall orbits of the LISA space mission. In particular, we take into account the gravitational effects of Interplanetary Dust (ID) on the spacecraft trajectories. The perturbing gravitational field has been calculated for some ID density distributions that fit the observed zodiacal light. Then we integrated the Gauss planetary equations to get the deviations from the LISA keplerian orbits around the Sun. This analysis can be eventually extended to Local Dark Matter (LDM), as gravitational fields are expected to be similar for ID and LDM distributions. Under some strong assumptions on the displacement noise at very low frequency, the Doppler data collected during the whole LISA mission could provide upper limits on ID and LDM densities.Comment: 11 pages, 6 figures, to be published on the special issue of "Celestial Mechanics and Dynamical Astronomy" on the CELMEC V conferenc
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