232 research outputs found

    Axial Load Behavior of a Driven Cast-In-Situ Pile in Sand

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    Driven cast-in-situ (DCIS) piles are a popular choice amongst piling contractors due to the ability to readily adjust pile lengths to suit the depth of penetration required. Despite their widespread use, there is a dearth of published data on the axial load behavior of temporary-cased DCIS piles, particularly in cohesionless soils. This paper reports the results of a static compression load test on a 340 mm nominal diameter, 5.75 m long DCIS pile in a dense sand deposit in Shotton, Wales. The test pile was instrumented with vibrating-wire strain gauges at various levels to determine the shaft and base resistance during loading. Analysis of the test results showed that pile behavior was predominantly end-bearing, with the base resistance accounting for approximately 81 % of the total capacity at a displacement of 10 % of the pile diameter. The pile exhibited a stiff stress-displacement response during the initial stages of loading due to the level of pre-stress applied to the soil beneath the base during driving of the steel installation tube. The displacement required to mobilize the shaft resistance was similar to that reported for preformed displacement piles, with a peak local shaft friction of 105 kPa occurring near the base of the pile which diminished with increasing distance from the tip. Finally, the load test results were compared with two popular CPT-based design methods (LCPC and Imperial College methods) for displacement piles in sand. Despite having specific empirical correlations for DCIS piles, the LCPC method significantly under-predicted the capacity of the test pile

    Enterobiasis of the Ovary in a Patient With Cervical Carcinoma In Situ

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    Background: Enterobiasis occurs throughout the female genital tract and may involve peritoneal surfaces. It is generally an incidental finding at surgery or at autopsy but occasionally is symptomatic. Most of the superficial lesions are composed of granulomas with variable fibrosis in which diagnostic eggs are found, often associated with degenerated adult worms. Multiple histologic sections may be required to establish the diagnosis in older lesions

    Scientific Visualization Using the Flow Analysis Software Toolkit (FAST)

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    Over the past few years the Flow Analysis Software Toolkit (FAST) has matured into a useful tool for visualizing and analyzing scientific data on high-performance graphics workstations. Originally designed for visualizing the results of fluid dynamics research, FAST has demonstrated its flexibility by being used in several other areas of scientific research. These research areas include earth and space sciences, acid rain and ozone modelling, and automotive design, just to name a few. This paper describes the current status of FAST, including the basic concepts, architecture, existing functionality and features, and some of the known applications for which FAST is being used. A few of the applications, by both NASA and non-NASA agencies, are outlined in more detail. Described in the Outlines are the goals of each visualization project, the techniques or 'tricks' used lo produce the desired results, and custom modifications to FAST, if any, done to further enhance the analysis. Some of the future directions for FAST are also described

    An experimental study of learning and limited information in games

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    We report on experiments that tested the predictions of competing theories of learning in games. Experimental subjects played a version of the three-person matching-pennies game. The unique mixed-strategy Nash equilibrium of this game is locally unstable under naive Bayesian learning. Sophisticated Bayesian learning predicts that expectations will converge to Nash equilibrium if players observe the entire history of play. Neither theory requires payoffs to be common knowledge. We develop maximum-likelihood tests for the independence conditions implied by the mixed-strategy Nash equilibrium. We find that perfect monitoring was sufficient and complete payoff information was unnecessary for average play to be consistent with the equilibrium (as is predicted by sophisticated Bayesian learning). When subjects had imperfect monitoring and incomplete payoff information, average play was inconsistent with the equilibrium.Game theory

    When Punishment Fails: Research on Sanctions, Intentions and Non-Cooperation

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    Gaultier de Biauzat Jean-François, Lachèze Murel Pierre Joseph de. Renvoi au comité de salubrité d'une lettre de M. Noé, médecin-accoucheur demandant à l'Assemblée de faire imprimer son ouvrage sur les accouchements contre nature, lors de la séance du 22 avril 1791. In: Archives Parlementaires de 1787 à 1860 - Première série (1787-1799) Tome XXV - Du 13 avril 1791 au 11 mai 1791. Paris : Librairie Administrative P. Dupont, 1886. pp. 239-240

    Personality characteristics are independently associated with prospective memory in the laboratory, and in daily life, among older adults

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    Prospective memory (PM) can deteriorate with age and adversely influence health behaviours. Research suggests that personality is related to PM in healthy young adults, but we know little about the role of personality in the PM amongst older adults. Community-dwelling older adults (N = 152) completed the NEO Five-Factor Inventory-3 and PM measures. After adjusting for demographics and general cognition, higher neuroticism and lower levels of openness were independently associated with lower objectively-measured time- and event-based PM. Lower conscientiousness was the only personality predictor of self-reported everyday PM failures. Findings indicate that personality plays a role in PM functioning in the laboratory and daily life

    Distress Tolerance as a Mechanism Linking Violence Exposure to Problematic Alcohol use in Adolescence

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    Adolescents exposed to violence are at elevated risk of developing most forms of psychopathology, including depression, anxiety, and alcohol abuse. Prior research has identified emotional reactivity and difficulties with emotion regulation as core mechanisms linking violence exposure with psychopathology. Scant research has examined behavioral responses to distress as a mechanism in this association. This study examined the association of violence exposure with distress tolerance—the ability to persist in the face of distress—and whether lower distress tolerance linked violence exposure with subsequent increases in depression, anxiety, and alcohol abuse problems during adolescence. Data were collected prospectively in a sample of 287 adolescents aged 16–17 (44.3% male; 40.8% White). At Time 1, participants provided self-report of demographics, violence exposure, and psychopathology, and completed a behavioral measure of distress tolerance, the Paced Auditory Serial Addition Task. Four months later, participants (n = 237) repeated the psychopathology assessments. Violence exposure was associated with lower distress tolerance (β = -.21 p =.009), and elevated concurrent psychopathology (β =.16-.45, p =.001-.004). Low distress tolerance was prospectively associated with greater likelihood of abusing alcohol over time (OR =.63, p =.021), and mediated the association between violence exposure and greater levels (β =.02, 95% CI [.001,.063]) and likelihood (OR =.03, 95% CI [.006,.065]) of alcohol use over time. In contrast, low distress tolerance was not associated concurrently or prospectively with internalizing symptoms. Results persisted after controlling for socio-economic status. Findings suggest that distress tolerance is shaped by early experiences of threat and plays a role in the association between violence exposure and development of problematic alcohol use in adolescence

    Prospectus, March 25, 1976

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    CHAMPIONSHIPS BECKON P/C WINNING SPEAKERS; CBS\u27 Edwards Commencement speaker: Schorr to speak here Mar. 29; Pre-registration set for Apr. 19-30; PC news in brief: Bicentennial Week Activities, Craft Festival Day, On-Going Activities; Letters to the Editor: Peoples\u27 Forum; PC Board of Trustees Election set April 10; Vets Elect; Smith: \u27Parkland has spoken\u27; Bunnies revolutionize Stu-Go; Parkland Observes 10th Anniversary; Fiddler, Singer perform; Exhibits, spinning to be shown; Craft festival Apr. 3 at P/C; Micro Tech comes to the rescue: Clock to tick again July 4; Commager campus appearance highlight of Bicentennial week; Talents of older people on exhibit; Student Government Calendar of Events; 2-day Health Fair on campus; Debaters take third; Recycle contest; Thanks; Skylines: Stellar Origin of Life; LRC reports on latest requests: no, yes, no....; Hands; Bookstore Bulletins; Country Bouquet; Audio-Visual Dept. offers study materials; Judge speaks April 6; April 1 Meeting; Award Letter; Under hypnosis, \u27Bear\u27 bares all; Classifieds; Cobra\u27s Corner: Jim Reed, \u27Class A\u27 Coach for 5 seasons; Cobra\u27s .500 after 8 games; Emmet Fairfield wins Bouncing Bob\u27s Bonanza; Bouncing Bob\u27s Basketball Bonanza; \u2724 oz.\u27 win IM Basketball; IM Softball starts; Rooms provide needed P.E. space; 1st home game April 5th: Womens\u27 softball beginshttps://spark.parkland.edu/prospectus_1976/1019/thumbnail.jp
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