3,023 research outputs found
Infant Mortality as a Potential Measure of Community Health in Urban Growth
This document is one of a series which contains the results of research carried out during a 1969 Summer Study of Urban Decentralization at the Oak Ridge National Laboratory, sponsored by the Department of Housing and Urban Development and the U.S. Atomic Energy Commission. The summary of the Summer Study is contained in An Introduction to Urban Decentralization Research, ORNL-HUD-3
EXPLICITLY AWARE OF CONFLICT: CHALLENGING THE IMPLICIT CONFLICT DETECTION INTERPRETATION OF THE BASE-RATE NEGLECT TASK
Conflict reasoning problems cue two competing responses to the problem, requiring the reasoner to resolve the conflict; non-conflict problems cue the same response. The central claim of the conflict detection literature is that conflict is detected implicitly without explicit awareness. The goal of this research is to test the hypothesis that reasoners are explicitly aware of the conflict with the base-rate reasoning task. Base-rate neglect is the tendency to undervalue base-rate ratios in favour of stereotypical personality descriptions. Conflict is studied with the base-rate task by pitting probabilistic information (the ratio) against believable information (the stereotype); performance is measured on conflict problems relative to non-conflict problems. In this research, the extremity of the base-rate ratios was manipulated and a neutral problem condition was included. Behavioural measures of confidence ratings, response times, and eye-gaze fixation times were collected. Retrospective self-reports were taken regarding awareness of conflict in the problems and conflict resolution strategy. In two experiments, there was compelling evidence that reasoners are more explicitly aware of conflict than previously assumed, that base-rate neglect is a function of conflict resolution strategy, and that the presumed indices of conflict detection index more than detection, namely, processes of conflict resolution and recognition of coherent information. This evidence provides a strong challenge to the predominant conflict-detection interpretation
Constraints on the thermal and tectonic evolution of Greymouth coalfield
The southern end of the Paparoa Range in Westland, South Island, New Zealand, comprises an asymmetrical, southward plunging, faulted (Brunner-Mt Davy) anticline, the eastern limb of which is common with the western limb of an asymmetrical (Grey Valley) syncline forming a Neogene foreland basin (Grey Valley Trough). The faulted anticline is a classic inversion structure: compression during the Neogene, associated with the development of the modern Australia-Pacific plate boundary, caused a pre-existing normal fault zone, about which a late Cretaceous-Oligocene extensional half graben had formed (Paparoa Trough), to change its sense of displacement. The resulting basement loading formed the foreland basin, containing up to 3 km of mainly marine sedimentary section.
Fission track results for apatite concentrates from 41 shallow drillhole and outcrop samples from the Greymouth Coalfield part of the Brunner-Mt Davy Anticline are reported and interpreted, to better establish the timing and amount of inversion, and hence the mechanism of inversion. The fission track results integrated with modelling of vitrinite reflectance data, show that the maximum paleotemperatures experienced during burial of the Late Cretaceous and mid-Eocene coal-bearing succession everywhere exceeded 85deg.C, and reached a peak of 180deg.C along the axis of the former basin. Cooling from maximum temperatures occurred during three discrete phases: 20-15 Ma, 12-7 Ma, and c. 2 Ma to the present. The amount of denudation has been variable across the inverted basin, decreasing westward from a maximum of c. 2.5 km during the first deformation phase, c. 1.2 km during the second phase, and 1.4 km during the third phase. It appears that exhumation over the coalfield continued for about 2 m.y. beyond the biostratigraphically determined time ranges of each of two synorogenic unconformities along the western limb of the Grey Valley Syncline. Stick-slip behaviour on the range front fault that localised the inversion is inferred. The tectonic evolution of the anticline-syncline pair at the southern end of the Paparoa Range, is therefore identical in style, and similar in timing, to the development of the Papahaua Range-Westport Trough across the Kongahu Fault Zone, in the vicinity of Buller Coalfield
Estimate of adolescent alcohol use in China: a meta-analysis
Objective: A profile of adolescent alcohol use for China that specified gender, school type and a consistent definition of alcohol use.
Method: A total of 1,646 papers were identified in the Chinese- and English-language literature published 2007â2015 that reported Chinese adolescent drinking rates. Selection criteria were established a priori. Thirty-two papers met all the selection criteria. Five papers were eliminated because they were found to be duplicate reports of the same data.
Result: The resulting sample included 26 papersâ24 in Chinese and two in English, 20 describing middle school students, 12 describing high school students, and six describing vocational high school students. Eleven papers described students in more than one type of school. Last 30 day use of alcohol was, as expected, highest among vocational high school students (44.7 % males, 28.8 % females) and drinking rates were higher for high school students (36.5 % males, 21.2 % females) than for middle school students (23.6 % males, 15.3 % females). Meta-regression identified factors associated with differences in drinking rates reported in individual studies as the definition of a drink and whether data were collected by trained personnel. Location appeared important, but its effects were inconsistent across different populations, which suggests that national estimates likely blur regional differences in patterns of alcohol use.
Conclusion: Rates derived from this meta-analysis provide a useful reference for scholars interested in China, alcohol use, adolescents, and patterns of use. The meta-regression analysis suggested practical ways to improve adolescent alcohol surveys in China
Estimate of adolescent alcohol use in China: a meta-analysis
Objective: A profile of adolescent alcohol use for China that specified gender, school type and a consistent definition of alcohol use.
Method: A total of 1,646 papers were identified in the Chinese- and English-language literature published 2007â2015 that reported Chinese adolescent drinking rates. Selection criteria were established a priori. Thirty-two papers met all the selection criteria. Five papers were eliminated because they were found to be duplicate reports of the same data.
Result: The resulting sample included 26 papersâ24 in Chinese and two in English, 20 describing middle school students, 12 describing high school students, and six describing vocational high school students. Eleven papers described students in more than one type of school. Last 30 day use of alcohol was, as expected, highest among vocational high school students (44.7 % males, 28.8 % females) and drinking rates were higher for high school students (36.5 % males, 21.2 % females) than for middle school students (23.6 % males, 15.3 % females). Meta-regression identified factors associated with differences in drinking rates reported in individual studies as the definition of a drink and whether data were collected by trained personnel. Location appeared important, but its effects were inconsistent across different populations, which suggests that national estimates likely blur regional differences in patterns of alcohol use.
Conclusion: Rates derived from this meta-analysis provide a useful reference for scholars interested in China, alcohol use, adolescents, and patterns of use. The meta-regression analysis suggested practical ways to improve adolescent alcohol surveys in China
Nebraska Prevention Center for Alcohol and Drug Abuse â Bibliography of Publications
Approximately 85 citations, with links, of published reseach papers by personnel of the Nebraska Prevention Center for Alcohol and Drug Abuse, 1970-2019
The Nebraska Prevention Center for Alcohol and Drug Abuse, 1980-2019
The Nebraska Prevention Center for Alcohol and Drug Abuse (NPCADA) was established at the University of Nebraska-Lincoln in 1980 with federal and state funds for substance use research. The Center operated in the UNL Teachers College (now the College of Education and Human Sciences) under the directorship of Professor Ian Newman for 39 years, until the Center closed in 2019.
Selected publications by faculty and graduate students of the NPCADA can be retrieved from UNL Digital Commons by searching on âNebraska Prevention Center.
Estimate of undergraduate university student alcohol use in China: a systematic review and meta-analysis
Objective: To develop an estimate of self-reported last 30 day alcohol use by university students in China.
Methods: A search of papers published in English and Chinese between 2006 and 2015, following pre-established selection criteria, identified 30 papers that were included in this meta-analysis. Nine moderator variables were preselected for this analysis.
Results: A total of 749 papers were identified in the keyword search, and 30 studies (28 in Chinese, 2 in English) met all selection criteria and were included in the meta-analysis. The self-reported last-30-day alcohol use for undergraduate university students was 66.8% for males and 31.7% for females. Meta-regression identified three moderators associated with the different drinking rates reported: the definition of drinking, the origin of the questionnaire used in the survey, and the geographic region where the survey was conducted. These three moderators explained 56% of the heterogeneity of reported drinking rates for the male students and 47% of the heterogeneity of reported drinking rates for the female students.
Conclusions: The results of this meta-analysis provide an estimate of last 30 day alcohol use by university students (age 18â23) and increase our understanding of drinking by young people in China. The meta-analysis suggested three variables that could have affected the results and which are worthy of further study. The discussion places these results in the context of Chinese drinking culture and university life
Validating the OPA Cascading Blackout Model on a 19402 Bus Transmission Network with Both Mesh and Tree Structures
The OPA model calculates the long-term risk of cascading blackouts by simulating cascading outages and the slow process of network upgrade in response to blackouts. We validate OPA on a detailed 19402 bus network model of the Western Electricity Coordinating Council (WECC) interconnection with publicly available data. To do this, we examine scalings on a series of WECC interconnection models with increasing detail. The most detailed, 19402 bus network has more tree structures at the edges of the main mesh structure, and we extend the OPA model to account for this. The higher-risk cascading outages are the large cascades that extend across interconnections, so validating cascading models on large networks is crucial to understanding how the real grid behaves. Finally, exploring networks with mixed mesh and tree like structure has implications for the risk analysis for both the transmission grid and other network infrastructures
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