426 research outputs found

    Historical Estimates of World Population: An Evaluation

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    A myopic view of history and underdevelopment of theory have been two shortcomings of demography, related to the pragmatism of the discipline and to demographers\u27 predilection for precise measures. A healthy counterpoise is the current surge of interest in demographic history, where questions remote from current practical concerns invite study and exact data are scarce. Historical demography, hitherto an esoteric field of specialization, is now a robustly growing sub-discipline. Historians, archaeologists, and others are also joining in the exploration of neglected demographic fields of history. Demographer\u27s horizons are being stretched, new frontiers of interdisciplinary contact are being opened, and the historical foundations of theory are being strengthened and extended

    Methods For Analyzing Components Of Change In Size And Structure Of The Labor Force With Application To Puerto Rico, 1950-60

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    The increase or decrease of a country\u27s labor force during a given period of time can be factored into the following components: A. Loss by death of labor force members. B. Net gain or loss by immigration and emigration of labor force members. C. Gain by entry into the labor force of individuals from the economically inactive population. D. Loss by retirement from the labor force into economically inactive status (including involuntary withdrawal on account of disability or for other reasons, as well as voluntary retirement). Likewise the change in number of workers attached to a given occupation or industry group of the labor force can be factored into the same four components, plus the fifth component: E. Net gain or loss by occupational or industrial mobility, i. e. transfers of labor force members from one occupation or industry to another. It is useful to subdivide components C and D as follows: C1 and D1. Labor force entries and retirements which would correspond to the maintenance of unchanging age-specific rates of entry and retirement (in the labor force as a whole and in given occupation or industry categories). C2 and D2. Entries and retirements due to changes during the period in the age-specific entry and retirement rates. The sum of components A, C1, and D1 can be considered as a measure of natural increase in the labor force as a whole or a given occupation or industry. This is the increase which would result from natural increase of the population and associated changes in its age structure without migration and without occupational or industrial mobility. Components B, C2, D2 and E are media through which the natural increase is modified under the influence of supply and demand factors

    Etude morphostructurale de la zone sud des rides Nouvelle-Calédonie et Loyauté (Zone Economique Exclusive de Nouvelle-Calédonie, Pacifique Sud-Ouest)

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    Les données de la campagne ZoNéCo 1 permettent de préciser la morphostructure du Sud des rides calédonienne et Loyauté qui s'avÚrent plus complexes que les cartes précédentes ne le montraient, mais on retrouve les principales structures de la région Calédonie-Loyauté. L'imagerie met en évidence les zones de roches nues ou encroûtées, la présence d'écoulements gravitaires du Sud du bassin des Loyauté vers le bassin Sud-Fidjien. (Résumé d'auteur

    Extensive air showers with TeV-scale quantum gravity

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    One of the possible consequences of the existence of extra degrees of freedom beyond the electroweak scale is the increase of neutrino-nucleon cross sections (σΜN\sigma_{\nu N}) beyond Standard Model predictions. At ultra-high energies this may allow the existence of neutrino-initiated extensive air showers. In this paper, we examine the most relevant observables of such showers. Our analysis indicates that the future Pierre Auger Observatory could be potentially powerful in probing models with large compact dimensions.Comment: 7 pages revtex, 5 eps fig

    Deep-Inelastic Final States in a Space-Time Description of Shower Development and Hadronization

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    We extend a quantum kinetic approach to the description of hadronic showers in space, time and momentum space to deep-inelastic epep collisions, with particular reference to experiments at HERA. We follow the history of hard scattering events back to the initial hadronic state and forward to the formation of colour-singlet pre-hadronic clusters and their decays into hadrons. The time evolution of the space-like initial-state shower and the time-like secondary partons are treated similarly, and cluster formation is treated using a spatial criterion motivated by confinement and a non-perturbative model for hadronization. We calculate the time evolution of particle distributions in rapidity, transverse and longitudinal space. We also compare the transverse hadronic energy flow and the distribution of observed hadronic masses with experimental data from HERA, and find encouraging results. The techniques developed in this paper may be applied in the future to more complicated processes such as eA, pp, pA and AA collisions.Comment: 44 pages plus 14 postscript figure

    Atomic Resonance and Scattering

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    Contains reports on three research projects.U.S. Air Force - Office of Scientific Research (Grant AFOSR-76-2972)National Science Foundation (Grant CHE79-02967)National Science Foundation (Grant PHY79-09743

    An Ethnohistorical Perspective on Cheyenne Demography

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    Administrative censuses of the Southern Cheyenne Indians from 1880,1891, and 1900 permit family reconstitution, identification of residence groups, and comparisons of fertility between monogamous and polygynous women, when the records are approached by ethnohistori cal methods. This approach includes an awareness of the aboriginal adoption practices, kinship system, and naming practices. It is argued that the biases and distortions of administrative records can be effectively corrected to add to our store of information on band and tribal societies.Yeshttps://us.sagepub.com/en-us/nam/manuscript-submission-guideline

    2000 Ohio-Grape Wine Short Course

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    Air, water, sun, and fire--the cooper's footprint on the barrel / Henry Work -- Keeping the bugs unhappy; successful barrel sanitation and maintenance / Henry Work -- Recommended methods for cleaning and maintaining oak cooperage / Phil Burton and Henry Work, with Jim Yerkes -- Chip me, stave me, oak me! The romance, dollars and sense of barrel alternatives / Tim DiPlacido -- Oak experiments / Roland Riesen -- Barrel experiment / Nick Ferrante -- Exploring the versatility and potential of vidal / Roland Riesen -- Ferrante: 1999 vineyard planting / Nick Ferrante -- Breeding rootstocks for current and impending viticultural problems / Andrew Walker -- Grape expectations looking toward traditional and non-traditional sponsors to enhance your event / Doniella Winchell -- Assessing grape maturity by taste and by numbers / Thomas Henick-Kling -- Influence of fruit condition on wine quality / James F. Gallander -- Influence of post bottling storage temperature and SO2 on wine quality / T. E. Steiner -- What we do at harvest to help wine quality / Tony Debevc -- Delivering wine quality / Nick Ferrante -- Criteria for selecting rootstocks / Andrew Walker -- A comparison of Pinot noir production in New York and Burgundy / Pascal Durand and Leslie Weston -- A unique approach to harvest labor / Fran Massaro -- New fungicide registrations for grapes in the year 2000 / Michael Ellis -- Studies to determine time of susceptibility of grape berry and rachis tissues to infection by Phomopsis viticola / O. Erincik, L. V. Madden, D. C. Ferree and M. A. Ellis -- Rootstock performance in Ohio / Arnie Esterer -- Growing your own: vinifera grafting experiments (1999) / Ron Barrett -- Developing an effective fungicide spray program for wine grapes in Ohio / Michael Ellis -- Light and fruit set / David C. Ferree, David M. Scurlock and John C. Schmid -- Soil amendments and mulches in tree health management / Harry Hoitink, Matthew Krause and Randy Zondag -- Report of 5th International Symposium on Cool Climate Viticulture and Enology / Roland Riesen -- Control strategies for soil insects in the vineyard / Roger Williams and Dan Fickl
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