3,687 research outputs found

    A Changing Natural Rate of Unemployment: Policy Issues

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    CRS_March_2004_Changing_Natural_Rate_of_Unemployment.pdf: 4154 downloads, before Oct. 1, 2020

    Observations of large-scale motions of the Sun

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    Recent observations of large-scale mass motions on the Sun are discussed. The principal large-scale velocity flows are convection, rotation, meridional flow, and torsional and radial oscillations

    Thick Target Models of Impulsive Chromospheric Flares

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    The most impulsive flares show large amplitude intensity variations in times of order 10 s. An attempt is made to reproduce the properties of these events with a model in which the heating of a static chromosphere by a nonthermal electron beam is balanced by thermal radiation cooling. The computed results suggest that the assumed static equilibrium may be achieved in some parts of the flares, and indicate improvements necessary for more accurate models of this type of flare

    H alpha observations of the 12 August 1975 type 3-RS bursts

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    H alpha filtergram observations of a number of the Type III-RS (reverse slope) bursts that occurred on August 12, 1975 are presented. Solar radio emission was peculiar on that date in that a large number, and proportion, of the usually rare reverse slope bursts were observed. The radio bursts are shown to coincide in time with a homologous set of H alpha flares located at the limbward edge of spot group Mt. Wilson 19598. A model is proposed in which the reverse slope bursts are the downward branches of U bursts, whose upward branches are hidden behind the coronal density enhancement over the spot group

    Is High Productivity Growth Compatible With Employment Growth?

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    CRS_October_2004_Is_High_Productivity_Growth_Compatible_with_Employment_Growth.pdf: 795 downloads, before Oct. 1, 2020

    Labor Market Patterns Since 2007

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    [Excerpt] The period since 2007 has been a time of significant change for labor markets. The Great Recession of 2007-2009, the longest and deepest recession since the Great Depression, caused the unemployment rate to briefly reach 10%, and labor markets have subsequently experienced a long and gradual recovery. Most labor force metrics, including the unemployment rate and various other measures of labor force underutilization, have returned to levels that have historically been consistent with full employment
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