The Deskilling vs Upskilling Debate: The Role of BLS Projections

[Excerpt] The growing shortage of professionally trained workers and the rising skill premiums will tend to cause supply to increase more rapidly than we have projected. But the gap between the projected growth of demand and supply is huge. Just to maintain the balance between the growth of supply and the growth of occupational demand that prevailed in the 1980s, itself a period of shortage, it will be necessary to increase in the stock of college graduates in the year 2000 by 3.7 million or, put another way, to raise the number of college graduates entering the labor forces by 462,000 or 42 percent between 1992 and the year 2000

The Worsening Shortage of College-Graduate Workers

The Bureau of Labor Statistics (BLS) projections of occupational employment growth have consistently underpredicted the growth of skilled occupations. BLS currently projects that professional, technical, and managerial jobs will account for 44.5% of employment growth between 1988 and 2000, while we project they will account for 70% of employment growth. Between March 1988 and March 1991 these occupations, in fact, accounted for 87% of employment growth. The BLS\u27s projections of the supply/demand balance for college graduates have also been off the mark-predicting a surplus for the 1980s when, in fact, a shortage developed, and relative wage ratios for college graduates rose to all-time highs. We project that the supply of college educated workers will grow more slowly during the 1990s and that there will be a continuing escalation of wage premiums for college graduates

Winter ozone formation and VOC incremental reactivities in the Upper Green River Basin of Wyoming

The Upper Green River Basin (UGRB) in Wyoming experiences ozone episodes in the winter when the air is relatively stagnant and the ground is covered by snow. A modeling study was carried out to assess relative contributions of oxides of nitrogen (NO_x) and individual volatile organic compounds (VOCs), and nitrous acid (HONO) in winter ozone formation episodes in this region. The conditions of two ozone episodes, one in February 2008 and one in March 2011, were represented using a simplified box model with all pollutants present initially, but with the detailed SAPRC-07 chemical mechanism adapted for the temperature and radiation conditions arising from the high surface albedo of the snow that was present. Sensitivity calculations were conducted to assess effects of varying HONO inputs, ambient VOC speciation, and changing treatments of temperature and lighting conditions. The locations modeled were found to be quite different in VOC speciation and sensitivities to VOC and NO_x emissions, with one site modeled for the 2008 episode being highly NO_x-sensitive and insensitive to VOCs and HONO, and the other 2008 site and both 2011 sites being very sensitive to changes in VOC and HONO inputs. Incremental reactivity scales calculated for VOC-sensitive conditions in the UGRB predict far lower relative contributions of alkanes to ozone formation than in the traditional urban-based MIR scale and that the major contributors to ozone formation were the alkenes and the aromatics, despite their relatively small mass contributions. The reactivity scales are affected by the variable ambient VOC speciation and uncertainties in ambient HONO levels. These box model calculations are useful for indicating general sensitivities and reactivity characteristics of these winter UGRB episodes, but fully three-dimensional models will be required to assess ozone abatement strategies in the UGRB

Thomas-forbidden particle capture

At high energies, in particle-capture processes between ions and atoms, classical kinematic requirements show that generally double collision Thomas processes dominate. However, for certain mass-ratios these processes are kinematically forbidden. This paper explores the possibility of capture for such processes by triple or higher order collision processes.Comment: 34 pages and three figure

The image ray transform for structural feature detection

The use of analogies to physical phenomena is an exciting paradigm in computer vision that allows unorthodox approaches to feature extraction, creating new techniques with unique properties. A technique known as the "image ray transform" has been developed based upon an analogy to the propagation of light as rays. The transform analogises an image to a set of glass blocks with refractive index linked to pixel properties and then casts a large number of rays through the image. The course of these rays is accumulated into an output image. The technique can successfully extract tubular and circular features and we show successful circle detection, ear biometrics and retinal vessel extraction. The transform has also been extended through the use of multiple rays arranged as a beam to increase robustness to noise, and we show quantitative results for fully automatic ear recognition, achieving 95.2% rank one recognition across 63 subjects

How Accurate Are Recent BLS Occupational Projections?

[Excerpt] At the beginning of the 1980\u27s, some analysts predicted an increase in lower-skilled jobs relative to higher-skilled jobs as a result of technological and other changes. They based their forecasts in part on Bureau of Labor Statistics\u27 projections of the future work force

Co-Adaptation Is Key to Coexisting with Large Carnivores

There is a pressing need to integrate large carnivore species into multi-use landscapes outside protected areas. However, an unclear understanding of coexistence hinders the realization of this goal. Here, we provide a comprehensive conceptualization of coexistence in which mutual adaptations by both large carnivores and humans have a central role

Building a resilient coexistence with wildlife in a more crowded world

There is an urgent need to sustainably coexist with wildlife. However, realizing this goal is hampered by scant understanding of the processes that facilitate and maintain coexistence. Here, we synthesize human–wildlife interactions into eight archetypal outcomes, from eradication to sustained co-benefits, which collectively serve as a heuristic for forms of coexistence across a wide range of species and systems worldwide. We utilize resilience theory to elucidate how and why human–wildlife systems shift between these archetypes, yielding insights on research and policy priorities. We underscore the importance of governance structures that actively enhance the resilience of coexistencepublishedVersio

Glacial and Postglacial Deposits of Northeastern Ohio

Author Institution: Department of Geology, University of AkronRecent high levels of Lake Erie have produced severe erosion and mass wasting along the shore. At the same time they have created excellent exposures of glacial and postglacial deposits east of Cleveland, Ohio. Glacial deposits consist of an older Coastal till and the Late Wisconsinan Ashtabula Till, whereas postglacial deposits generally are gravels, sands and silts. Lithofacies of the Ashtabula Till exposed at Sims Park in Euclid, Ohio, include sheared, massive diamicts and resedimented diamicts. The lowest sheared massive diamict previously identified as the Coastal till possibly represents a lodgement till deposited by Ashtabula ice. Beach deposits at Mentor Headlands resulted from construction of manmade structures. At Camp Isaac Jogues, deltaic sands overlie a sequence of diamicts, which has an unusually high carbonate content when compared to other sections along the shore. The geometry of the overlying sands and the facies sequence strongly suggest a river-dominated deltaic system. Two sand pits in beach ridges (one at the Warren level and the other at the Arkona level) farther inland contain coarse-grained facies that may represent an outwash plain or coastal barrier overlain by dune sand. A log dated at 13-4 ka was found at the Arkona level, 1 km south of the second pit