1,343 research outputs found

    The Health Impact of Pesticide Exposure in a Cohort of Outdoor Workers

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    This thesis describes a study undertaken between 1992 and 2001 to explore the possible health impacts of human exposure to pesticides. The study followed the health outcomes of approximately 4000 outdoor workers over a period of up to sixty-one years. These workers comprised two subcohorts of approximately even size, one composed of agricultural workers with high insecticide exposures, and the other made up of outdoor staff from local councils in the same area with little or no occupational exposure to insecticides. Mortality and morbidity were compared between the two groups, and with the general Australian community. The study identifies significantly increased mortality among both exposed and control subjects when compared to the Australian population. The major cause of this increase was mortality from smoking related diseases. The study also identifies significant increases in mortality among exposed subjects for a number of conditions that do not appear to be the result of smoking patterns, both when compared to the control group and the Australian population. These include pancreatic cancer in some DDT exposed subjects and asthma, diabetes, and leukaemia in subjects working with more modern chemicals. There was also an increase in self reported chronic illness and asthma, and lower neuropsychological functioning scores among surviving exposed subjects when compared to controls. Diabetes was also reported more commonly by subjects reporting occupational use of herbicides

    Minimum essentials in spelling, punctuation, capitalization and English grammar : being a study to determine what spelling, punctuation, capitalization and grammar should be studied in the junior high school and to determine what items of grammar should be stressed.

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    There is considerable interest in minimum essentials in English. This interest is manifested in educational periodicals, pamphlets and monographs that have given the results of surveys that have been made in order to find out what the minimum essentials should be. Not only periodicals treat of the subject, but books also are being written which are devoted entirely or in part to the minimum essentials. Practice pads and other devices are other evidences of an effort to aid those who are trying to teach the essentials. The criticism of the colleges and the technical training schools is that their entering students have to be coached in the fundamentals. What those fundamentals are no one has yet defined completely nor answered satisfactorily. The colleges blame the high school for the alleged poor preparation of the graduate, and the high school complains about the poor training which the elementary school is giving in the fundamentals. Any study that further defines the fundamentals or one that defines the amount of the commonly termed fundamentals that the normal pupil may be expected to master in a given time should be welcome contribution. As a result of one year\u27s perusal of what has been accomplished in the field upon the subject of minimum essentials in English in various schools and especially in the Junior High Schools of Louisville, Kentucky, this thesis is presented

    Sourcing of Miocene accretionary lapilli on ‘Eua, Tonga; atypical dispersal distances and tectonic implications for the central Tonga Ridge

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    Volcaniclastics hosting accretionary lapilli on the Tonga Ridge were sourced from the remnant Lau Ridge, prior to Lau back-arc basin opening. For the ‘Eua occurrences, an atypical dispersal distance of not less than 70 km is estimated, partly arising from the anomalous easterly position of ‘Eua. Dispersal within ocean-surface pyroclastic density currents is supported but strike-slip movement in a fault zone south of ‘Eua, post-middle Miocene but pre-ridge-splitting, can account for part of the dispersal distance by vertical axis block rotation, a tectonic process common on the southern Tonga–Kermadec–Hikurangi trend. In this model, the volcano which sourced the ‘Eua tephra was on a subjacent block, rather than the block which hosts ‘Eua. After deposition but prior to the opening of the Lau Basin, the accretionary lapilli on ‘Eua became displaced by block rotation c. 40 km towards the Tonga trench and away from source

    Engineering study of the rotary-vee engine concept

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    The applicable thermodynamic cycle and performance considerations when the rotary-vee mechanism is used as an internal combustion (I.C.) heat engine are reviewed. Included is a simplified kinematic analysis and studies of the effects of design parameters on the critical pressures, torques and parasitic losses. A discussion of the principal findings is presented

    Service non compris

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    Pimitamon: Conceptualizing a New Canadian North through the Graphic Narratives of Jeff Lemire

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    In Essex County, in Secret Path (his collaboration with Gord Downie), in Roughneck, and in his creation of the indigenous Canadian superhero Equinox for Justice League United: Canada, Jeff Lemire highlights a vision of the Canadian ‘north’ as transformative space. In Lemire’s hands, ‘the north’ is where Chanie Wenjack’s historical reality (Secret Path), Derek and Beth Ouelette’s personal demons (Roughneck), and Miiyahbin Marten’s life as an ordinary indigenous teen in Moose Factory, Ontario (Justice League United Volume 1: Justice League Canada) all undergo a transformation which speaks to shifting perceptions of identity, responsibility, and belonging in Canada. The north becomes a site where Lemire (and Lemire’s readers) directly confront how even a deliberate act of intended reconciliation between settler-colonial and indigenous peoples can effectively colonize the space in which it occurs. All three works, in different ways, deploy rhetorical strategies to minimize the ‘collateral damage’ that is probably unavoidable, and even perhaps necessary, in the articulation of the kind of anticolonial dialogue toward which Lemire’s work is oriented

    The curious case of an internal pilot in a multicentre randomised trial-time for a rethink?

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    Acknowledgements The authors would like to acknowledge helpful discussions on this topic held with various colleagues in connection with a variety of projects. Funding No funding was received for this work.Peer reviewedPublisher PD

    A Time-Series Analysis of U.S. Kidney Transplantation and the Waiting List: Donor Substitution Effects and "Dirty Altruism"

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    This paper provides an econometric analysis of the relationship between live and deceased (cadaveric) kidney donations for the United States for the period 1992:IV through 2006:II. Statistical analysis shows that increases in deceased donor transplants reduce future live donor grafts, controlling for both waiting list effects and exogenous trends. This result has important, and potentially dire, implications for efforts to reduce the organ shortage by increasing use of cadaver donors.Kidney Transplantations; Donor Substitution Effects; Dirty Altruism; Cointegration

    Innovation in Information Systems Education-II Enterprise IS Management: A Capstone Course for Undergraduate IS Majors

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    As information technology becomes increasingly embedded in critical business processes, IS professionals continually seek to improve the security, reliability and performance of the systems for which they are responsible. Systems and network applications vendors are unveiling a wide array of new products designed to assist in this effort and the trade literature is devoting significant coverage to the IT operations processes required to achieve required IT service levels. Despite increasing industry attention to the importance of IS operations, the authors believe that such concerns are relatively unaddressed in the typical undergraduate business-oriented IS curriculum. This article describes a course currently offered at the authors\u27 university that conceptualizes the enterprise management of IS as including both IS governance and IS management processes. The distinction allows for coverage of traditional content related to the strategic use of information technology while providing an increased focus on IT operational management issues

    Applying Monte Carlo Simulation to Launch Vehicle Design and Requirements Verification

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    This paper is focused on applying Monte Carlo simulation to probabilistic launch vehicle design and requirements verification. The approaches developed in this paper can be applied to other complex design efforts as well. Typically the verification must show that requirement "x" is met for at least "y" % of cases, with, say, 10% consumer risk or 90% confidence. Two particular aspects of making these runs for requirements verification will be explored in this paper. First, there are several types of uncertainties that should be handled in different ways, depending on when they become known (or not). The paper describes how to handle different types of uncertainties and how to develop vehicle models that can be used to examine their characteristics. This includes items that are not known exactly during the design phase but that will be known for each assembled vehicle (can be used to determine the payload capability and overall behavior of that vehicle), other items that become known before or on flight day (can be used for flight day trajectory design and go/no go decision), and items that remain unknown on flight day. Second, this paper explains a method (order statistics) for determining whether certain probabilistic requirements are met or not and enables the user to determine how many Monte Carlo samples are required. Order statistics is not new, but may not be known in general to the GN&C community. The methods also apply to determining the design values of parameters of interest in driving the vehicle design. The paper briefly discusses when it is desirable to fit a distribution to the experimental Monte Carlo results rather than using order statistics
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