30,148 research outputs found

    On the detectability of post-Newtonian effects in gravitational-wave emission of a coalescing binary

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    The effect of the recently obtained 2nd post-Newtonian corrections on the accuracy of estimation of parameters of the gravitational-wave signal from a coalescing binary is investigated. It is shown that addition of this correction degrades considerably the accuracy of determination of individual masses of the members of the binary. However the chirp mass and the time parameter in the sinal is still determined to a very good accuracy. The performance of the Newtonian filter is investigated and it is compared with performance of post-Newtonian search templates introduced recently. It is shown that both search templates can extract accurately useful information about the binary.Comment: 5 pages (16kb), LATEX, to be published in the proccedings of the 17th Texas Symposiu

    Courtship Behavior in \u3ci\u3eHabronattus Captiosus\u3c/i\u3e (Araneae: Salticidae)

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    Courtship display of Habronattus captiosus involves several behavioral elements common to other members of the Habronattus coecatus species group. The one unique element is vibration of the patellae when raised over the opisthosoma. Male-male interactions included an agonistic display and grappling. Fourteen male-female interactions were observed, which exhibited various combinations of display elements. There was one successful mating and one case of cannibalism by a male

    Spiders from Heading Bluegrass (POA Prantensis L.) in Roseau County, Minnesota

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    Northwestern Minnesota is one of the principal producers of Kentucky bluegrass (Poa pratensis L.) seed in the United States. Extensive areas of cropland in Roseau County are devoted to this seed production. The natural vegetation of Roseau County is in itself interesting, since the county straddles the ecotone between boreo-nemoral forest and prairie. The types of plant cover include the following: prairie, jack pine forest, black spruce-larch bog, aspen woods, spruce-fir forest, and river flood plain forest. The soil types are consequently, quite complex. Generally, bluegrass is grown on burnt and drained peatland, or former prairie sites. The topography of the bluegrass growing areas is flat, and spring flooding is extensive. The climate is typically continental, with severe winters and a three month, frost free growing season

    Review of: Risk in the Modern Age: Social Theory, Science and Environmental Decision Making (Maurie J. Cohen, ed.)

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    Review of the book: Risk in the Modern Age: Social Theory, Science and Environmental Decision Making (Maurie J. Cohen, ed., St. Martin\u27s Press 2000). List of Figures and Tables, List of Contributors, Preface, Index. ISBN 0-312-22216-5 [264 pp. $65.00. Hardbound, 175 Fifth Avenue, New York, NY 10010]

    Stress and accent in language production and understanding

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    End Games: The Challenge of Sustainability

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    Examines how funders and grantees approach the challenge of supporting the continued progress and survival of a community-based initiative, after the completion of the project. Offers insights and suggestions to funders and communities

    Description of a New Species of \u3ci\u3eParadamoetas\u3c/i\u3e (Araneae: Salticidae), with a Revised Key to the Genus

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    Paradamoetas changuinola new species, is described. The range of this antlike genus of jumping spiders is extended south to Panama. A revised key to the four specics currently recognized is presented

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    Not Business as Usua

    Cost Avoidance Bolstering the Economic Case for Investing In Youth Aging Out of Foster Care

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    This study bolsters the case for greater investments into the future of youth aging out of foster care. Cutler does so by identifying some of the costs of bad outcomes and estimating the potential savings that could be achieved if youth in foster care were doing as well as others their age. The paper looks at three important areas: education, family formation and criminal justice
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