IDENTIFYING RESOURCE BARRIERS TO LOCAL ECONOMY GROWTH

Community/Rural/Urban Development,

ICAN sensitivity analysis

A computer program called Integrated Composite Analyzer (ICAN) was used to predict the properties of high-temperature polymer matrix composites. ICAN is a collection of NASA Lewis Research Center-developed computer codes designed to carry out analysis of multilayered fiber composites. The material properties used as input to the program were those of the thermoset polyimide resin PMR-15 and the carbon fiber Celion 6000. The sensitivity of the predicted composite properties to variations in the resin and fiber properties was examined. In addition, the predicted results were compared with experimental data. In most cases, the effect of changes in resin and fiber properties on composite properties was reasonable. However, the variations in the composite strengths with the moisture content of the PMR-15 resin were inconsistent. The ICAN-predicted composite moduli agreed fairly well with experimental values, but the predicted composite strengths were generally lower than experimental values

An Analysis of the Factors Affecting the Career Orientation of Federal Civilian Engineers

This study was conducted to analyze the factors that affect the career orientation of federal civilian engineers at the Naval Avionics Center in Indianapolis, Indiana. One hundred and sixty-seven scientists and engineers from several engineering divisions were surveyed regarding turnover intentions. Based on literature reviews in the area of turnover with this particular population, a model was developed containing several factors related to intent to remain in the organization. Results indicated that this model predicts the turnover intention with 87.5 percent accuracy. Findings are interpreted in light of ongoing efforts on an organization-wide basis to introduce change in the Center's culture through a quality management program. Keywords: Career orientation, Job satisfaction turnover. (sdw)Naval Avionics Center, Civilian Personnel Departmenthttp://archive.org/details/analysisoffactor00robeN0016389WR90118NAApproved for public release; distribution is unlimited

Import and Consumer Impacts of U.S. AntiDumping Tariffs: Freshwater Crawfish from China

Few aquatic products of the United States have limited competition from imported supplies. This situation existed with the domestic supply of freshwater crawfish until 1994. The 52 thousand MT round weight domestic production from aquaculture and capture fisheries experienced major import competition at that point. Imports of value added crawfish products increased to the point that an antidumping petition (marketing at less than fair market value) was filed with the U.S. International Trade Commission. An investigation led to a finding of an industry being materially injured by reason of crawfish tail meat imports from China being sold in the U.S. at less than fair value (LTFV). Tariffs averaging 123% were established. The tariff remedy had limited impact. The competitive condition of the domestic crawfish processing industry was not restored during the first three years of the five-year tariff period. Severe domestic tail meat shortages resulted from two consecutive years of drought in producing areas. The increase in domestic tail meat prices was large enough to re-establish the pre-tariff import-domestic price difference

Long-Term Isothermal Aging Effects on Carbon Fabric-Reinforced PMR-15 Composites: Compression Strength

A study was conducted to determine the effects of long-term isothermal thermo-oxidative aging on the compressive properties of T-650-35 fabric reinforced PMR-15 composites. The temperatures that were studied were 204, 260, 288, 316, and 343 C. Specimens of different geometries were evaluated. Cut edge-to-surface ratios of 0.03 to 0.89 were fabricated and aged. Aging times extended to a period in excess of 15,000 hours for the lower temperature runs. The unaged and aged specimens were tested in compression in accordance with ASTM D-695. Both thin and thick (plasma) specimens were tested. Three specimens were tested at each time/temperature/geometry condition. The failure modes appeared to be initiated by fiber kinking with longitudinal, interlaminar splitting. In general, it appears that the thermo-oxidative degradation of the compression strength of the composite material may occur by both thermal (time-dependent) and oxidative (weight-loss) mechanisms. Both mechanisms appear to be specimen-thickness dependent

Alcohol consumption and leukocyte telomere length.

The relationship between alcohol consumption and mortality generally exhibits a U-shaped curve. The longevity observed with moderate alcohol consumption may be explained by other confounding factors, and, if such a relationship is present, the mechanism is not well understood. Indeed, the optimal amount of alcohol consumption for health has yet to be determined. Leukocyte telomere length is an emerging quantifiable marker of biological age and health, and a shorter telomere length is a predictor of increased mortality. Because leukocyte telomere length is a quantifiable and objectively measurable biomarker of aging, we sought to identify the amount of alcohol consumption associated with the longest telomere length and least telomere length attrition. Among over 2,000 participants from two distinct cohort studies, we found no pattern of alcohol consumption that was associated with longer telomere length or less telomere length attrition over time. Binge drinking may reduce telomere length. Using telomere length as a marker of age and health, these data fail to demonstrate any benefits of alcohol consumption, even when consumed in moderation

Adoption of Conservation-Tillage Practices in Cotton Production

Replaced with revised version of paper 10/23/07.conservation tillage, cotton, genetically modified seed, herbicide-resistant cotton, stacked-gene cotton, simultaneous logit model, single-equation logit model, technology adoption, Crop Production/Industries,

Linkages between the economy and the environment : an analysis of economic growth in Clatsop County, Oregon

Page 2 and 6 are blank pages in document.This report analyzes some of the linkages between economic growth and environmental change in a rural community. Recently developed methodology for estimating induced as well as direct environmental change from a new industry is applied to a current development issue on the Oregon coast. Some extensions of the methodology were developed to assist in longrange planning. Linear programming was used to trace environmental consequences of alternative economic growth patterns. Total change from new industry (in this case, a new aluminum plant in Warrenton, Oregon) is shown to depend not only on the relation of the new industry to the environment but also on impact of the new industry on the local economy and the feedback from the local economy's total expansion back to the environment

Cortical and subcortical coordination of visual spatial attention revealed by simultaneous EEG-fMRI recording

Visual spatial attention has been studied in humans with both electroencephalography (EEG) and functional magnetic resonance imaging (fMRI) individually. However, due to the intrinsic limitations of each of these methods used alone, our understanding of the systems-level mechanisms underlying attentional control remains limited. Here, we examined trial-to-trial covariations of concurrently recorded EEG and fMRI in a cued visual spatial attention task in humans, which allowed delineation of both the generators and modulators of the cue-triggered event-related oscillatory brain activity underlying attentional control function. The fMRI activity in visual cortical regions contralateral to the cued direction of attention covaried positively with occipital gamma-band EEG, consistent with activation of cortical regions representing attended locations in space. In contrast, fMRI activity in ipsilateral visual cortical regions covaried inversely with occipital alpha-band oscillations, consistent with attention-related suppression of the irrelevant hemispace. Moreover, the pulvinar nucleus of the thalamus covaried with both of these spatially specific, attention-related, oscillatory EEG modulations. Because the pulvinar's neuroanatomical geometry makes it unlikely to be a direct generator of the scalp-recorded EEG, these covariational patterns appear to reflect the pulvinar's role as a regulatory control structure, sending spatially specific signals to modulate visual cortex excitability proactively. Together, these combined EEG/fMRI results illuminate the dynamically interacting cortical and subcortical processes underlying spatial attention, providing important insight not realizable using either method alone

Examining attitudes toward public participation across sectors: An experimental study of food assistance

Public views of government are linked to trust, coproduction, regulatory compliance, and political participation. This study focuses on factors shaping public attitudes toward government programs by exploring whether direct participation in governance matters for how the public evaluates the performance of government programs. With an experiment involving governmentally funded food assistance, we randomize the presence of public participation, service providers' sector, and third-party performance ratings and explore their influence on respondents' assessments of the program. We find that respondents have more confidence in the efficiency, equity, and other aspects of performance when ordinary people play a role in designing and implementing the program. We observe no sector bias among respondents. Individual assessments depend on objective performance information from a credible source. These findings have critical implications for the value people place on engagement in governance and point to the role of publicly available data in shaping public views of government