17,494 research outputs found

    Prologue: methodological perspective and approach in African urban studies

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    Changing family studie

    The impact of demographic change on U. S. labor markets

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    According to the U. S. Census Bureau projections, the United States will face dramatic demographic changes over the next one hundred years. Indeed, the country will be entering largely uncharted territory. In the twenty-first century, the population is expected to grow more slowly than ever before over an extended period. The population will also age rapidly, with the share of the population over 65 climbing to a succession of new record highs. Finally, the United States will once again become a nation of immigrants. Over the past decade, the wave of new immigrants has already neared proportions last seen in the early 1900s at the end of the Great Migrations. And this inflow is projected to persist throughout the coming century, with new immigrants and the children of those immigrants contributing well over half of the increase in the U. S. population. Because the source of this inflow has shifted from Europe to Latin America and Asia, this new wave will change the voice and face of America forever.Demography ; Economic conditions ; Labor market

    Seismic shifts: the economic impact of demographic change: an overview

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    Most economic developments are hard to predict. Considerable uncertainty surrounds forecasts for output growth, inflation, and unemployment a year from now, for instance. But demographic developments are different in this respect. Although demographic surprises abound, the major trends build slowly, and the broad contours of medium-term outcomes become discernible well in advance.Demography ; Economic conditions

    Tensile film clamps and mounting block for the rheovibron and autovibron viscoelastometer

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    A set of film clamps and a mounting block for use in the determination of tensile modulus and damping properties of films in a manually operated or automated Rheovibron is diagrammed. These clamps and mounting block provide uniformity of sample gripping and alignment in the instrument. Operator dependence and data variability are greatly reduced

    Response of a small-turboshaft-engine compression system to inlet temperature distortion

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    An experimental investigation was conducted into the response of a small-turboshaft-engine compression system to steady-state and transient inlet temperature distortions. Transient temperature ramps range from less than 100 K/sec to above 610 K/sec and generated instantaneous temperatures to 420 K above ambient. Steady-state temperature distortion levels were limited by the engine hardware temperature list. Simple analysis of the steady-state distortion data indicated that a particle separator at the engine inlet permitted higher levels of temperature distortion before onset of compressor surge than would be expected without the separator

    The Eyes of the Beholders

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    Book review of "A Life and Death Decision: A Jury Weighs the Death Penalty" by Scott Sundb
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