Volunteer Activism and Professionalism in Social-Movement Organizations

The effects of professionalism on volunteer activism within social movement organizations (SMOs) are more complex than generally recognized. Professionalism can inhibit or erode, substitute for, or facilitate volunteer activism. Most studies identify one of these patterns as typical of SMOs or dominant in a particular case. This article argues that some combination of the three, rather than a single pattern, is probably more typical of SMOs. To identify such combinations two analytic tools are needed: a more complex concept of volunteer activism than is generally used, and, a broader understanding of the means by which professionals influence volunteer activism. This article develops these tools through a comparative case study of the umbrella organizations of three major peace campaigns - the Emergency Peace Campaign (1936-1937), the atomic test ban campaign (1957-1963), and the nuclear weapons freeze campaign (1979-1986). The umbrella organizations are then shown to incorporate different combinations of the three basic patterns of professional-volunteer relations

Review of Comparative Perspectives on Social Movements: Political Opportunities. Mobilizing Structure, and Cultural Framings (Book)

Reviews the book Comparative Perspectives on Social Movements: Political Opportunities, Mobilizing Structure, and Cultural Framings, edited by Doug McAdam, John D. McCarthy, and Mayer N. Zald

Volunteer Activism and Professionalism in Social-Movement Organizations

The effects of professionalism on volunteer activism within social movement organizations (SMOs) are more complex than generally recognized. Professionalism can inhibit or erode, substitute for, or facilitate volunteer activism. Most studies identify one of these patterns as typical of SMOs or dominant in a particular case. This article argues that some combination of the three, rather than a single pattern, is probably more typical of SMOs. To identify such combinations two analytic tools are needed: a more complex concept of volunteer activism than is generally used, and, a broader understanding of the means by which professionals influence volunteer activism. This article develops these tools through a comparative case study of the umbrella organizations of three major peace campaigns - the Emergency Peace Campaign (1936-1937), the atomic test ban campaign (1957-1963), and the nuclear weapons freeze campaign (1979-1986). The umbrella organizations are then shown to incorporate different combinations of the three basic patterns of professional-volunteer relations

Review of Marching on Washington: The Forging of an American Political Tradition.

Reviews the book Marching on Washington: The Forging of an American Political Tradition, by Lucy G. Barber

On the number of classes of conjugate Hall subgroups in finite simple groups

In this paper we find the number of conjugate $\pi$-Hall subgroups in all finite almost simple groups. We also complete the classification of $\pi$-Hall subgroups in finite simple groups and correct some mistakes from our previous paper.Comment: article in press in "Journal of algebra

Classification of flag-transitive Steiner quadruple systems

A Steiner quadruple system of order v is a 3-(v,4,1) design, and will be denoted SQS(v). Using the classification of finite 2-transitive permutation groups all SQS(v) with a flag-transitive automorphism group are completely classified, thus solving the "still open and longstanding problem of classifying all flag-transitive 3-(v,k,1) designs" for the smallest value of k. Moreover, a generalization of a result of H. Lueneburg (1965, Math. Z. 89, 82-90) is achieved.Comment: 11 page

Sylow's theorem for Moufang loops

For finite Moufang loops, we prove an analog of the first Sylow theorem giving a criterion of the existence of a p-Sylow subloop. We also find the maximal order of p-subloops in the Moufang loops that do not possess p-Sylow subloops.Comment: 21 page

A Satellite-based Assessment of Trans-Pacific Transport of Pollution Aerosol

It has been well documented that pollution aerosol and dust from East Asia can transport across the North Pacific basin, reaching North America and beyond. Such intercontinental transport extends the impact of aerosols for climate change, air quality, atmospheric chemistry, and ocean biology from local and regional scales to hemispheric and global scales. Long term, measurement-based studies are necessary to adequately assess the implications of these wider impacts. A satellite-based assessment can augment intensive field campaigns by expanding temporal and spatial scales and also serve as constraints for model simulations. Satellite imagers have been providing a wealth of evidence for the intercontinental transport of aerosols for more than two decades. Quantitative assessments, however, became feasible only recently as a result of the much improved measurement accuracy and enhanced new capabilities of satellite sensors. In this study, we generated a 4-year (2002 to 2005) climatology of optical depth for pollution aerosol (defined as a mixture of aerosols from urbanlindustrial pollution and biomass burning in this study) over the North Pacific from MODerate resolution Imaging Spectro-radiometer (MODIS) observations of fine- and coarse-mode aerosol optical depths. The pollution aerosol mass loading and fluxes were then calculated using measurements of the dependence of aerosol mass extinction efficiency on relative humidity and of aerosol vertical distributions from field campaigns and available satellite observations in the region. We estimated that about 18 Tg/year pollution aerosol is exported from East Asia to the northwestern Pacific Ocean, of which about 25% reaches the west coast of North America. The pollution fluxes are largest in spring and smallest in summer. For the period we have examined the strongest export and import of pollution particulates occurred in 2003, due largely to record intense Eurasia wildfires in spring and summer. The overall uncertainty of pollution fluxes is estimated at about 80%. A reduction of uncertainty can be achieved with a better characterization of pollution aerosol through integrating emerging A-Train measurements. Simulations by the Goddard Chemistry Aerosol Radiation and Transport (GOCART) and Global Modeling Initiative (GMI) models agree quite well with the satellite-based estimates of annual and latitudeintegrated fluxes, with larger model-satellite differences in latitudinal variations of fluxes

Evaluation and Windspeed Dependence of MODIS Aerosol Retrievals Over Open Ocean

The Maritime Aerosol Network (MAN) data set provides high quality ground-truth to validate the MODIS aerosol product over open ocean. Prior validation of the ocean aerosol product has been limited to coastal and island sites. Comparing MODIS Collection 5 ocean aerosol retrieval products with collocated MAN measurements from ships shows that MODIS is meeting the pre-launch uncertainty estimates for aerosol optical depth (AOD) with 64% and 67% of retrievals at 550 nm, and 74% and 78% of retrievals at 870 nm, falling within expected uncertainty for Terra and Aqua, respectively. Angstrom Exponent comparisons show a high correlation between MODIS retrievals and shipboard measurements (R= 0.85 Terra, 0.83 Aqua), although the MODIS aerosol algorithm tends to underestimate particle size for large particles and overestimate size for small particles, as seen in earlier Collections. Prior analysis noted an offset between Terra and Aqua ocean AOD, without concluding which sensor was more accurate. The simple linear regression reported here, is consistent with other anecdotal evidence that Aqua agreement with AERONET is marginally better. However we cannot claim based on the current study that the better Aqua comparison is statistically significant. Systematic increase of error as a function of wind speed is noted in both Terra and Aqua retrievals. This wind speed dependency enters the retrieval when winds deviate from the 6 m/s value assumed in the rough ocean surface and white cap parameterizations. Wind speed dependency in the results can be mitigated by using auxiliary NCEP wind speed information in the retrieval process