4,846 research outputs found

    The economics of farm accidents and safety in New Zealand agriculture

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    This report presents an economic analysis of farm accidents in New Zealand. Presently, the social costs of farm accidents are not well understood: their monetary importance to the farmer, hence the nation,has thus far not been quantified in a way meaningful to safety policy makers. Information about the relative magnitude of social costs resulting from accidents on farms is necessary to establish the potential social benefits attributable to safety. Such information is required if safety expenditures are to be rationally allocated to priority needs

    Personality Characteristics Related to Managerial Success

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    This is a study of the relationship between certain psychological factors and managerial success among several farm couples. An interdisciplinary study in economics and psychology, its motivation in part originated with farm lending agencies in South Dakota. They observe that South Dakota farmers are requiring increasing amounts of credit. Since credit risk is essentially evaluating management, greater understanding of the human element in management is increasingly important, as competence in this area appears to involve personality and behavioral elements as well

    Experimental Design for the LATOR Mission

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    This paper discusses experimental design for the Laser Astrometric Test Of Relativity (LATOR) mission. LATOR is designed to reach unprecedented accuracy of 1 part in 10^8 in measuring the curvature of the solar gravitational field as given by the value of the key Eddington post-Newtonian parameter \gamma. This mission will demonstrate the accuracy needed to measure effects of the next post-Newtonian order (~G^2) of light deflection resulting from gravity's intrinsic non-linearity. LATOR will provide the first precise measurement of the solar quadrupole moment parameter, J2, and will improve determination of a variety of relativistic effects including Lense-Thirring precession. The mission will benefit from the recent progress in the optical communication technologies -- the immediate and natural step above the standard radio-metric techniques. The key element of LATOR is a geometric redundancy provided by the laser ranging and long-baseline optical interferometry. We discuss the mission and optical designs, as well as the expected performance of this proposed mission. LATOR will lead to very robust advances in the tests of Fundamental physics: this mission could discover a violation or extension of general relativity, or reveal the presence of an additional long range interaction in the physical law. There are no analogs to the LATOR experiment; it is unique and is a natural culmination of solar system gravity experiments.Comment: 16 pages, 17 figures, invited talk given at ``The 2004 NASA/JPL Workshop on Physics for Planetary Exploration.'' April 20-22, 2004, Solvang, C

    The Effect of Race/Ethnicity on the Age of Colon Cancer Diagnosis

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    ABSTRACT BACKGROUND: Colorectal cancer is the third most commonly diagnosed cancer in the United States. Notably, racial/ethnic disparities exist in both incidence and mortality. PURPOSE: The aim of this case study was to investigate the impact of race/ethnicity on age at diagnosis of colorectal cancer in a defined population in Suffolk County, NY. METHODS: Data were retrospectively collected on race/ethnicity, health insurance status, age at diagnosis, stage at diagnosis, gender, smoking status, alcohol intake, tumor location, and body mass index for colorectal cancer patients with medical records in the Stony Brook University Medical Center database (2005-2011). Population-based data on Hispanic and non-Hispanic Whites were obtained from the Surveillance, Epidemiology, and End Results registry of New York State for an overlapping time period. Permutation-based ANCOVA and logistic regression with stepwise variable selection were conducted to identify covariates and first-order interactions associated with younger age at diagnosis and cancer stage as a dependent categorical variable. RESULTS: Of 328 colorectal cancer patients, Hispanics were diagnosed at a median younger age of 57y vs. 67y than non-Hispanic Whites (FDR = 0.001). Twenty-six percent of Hispanics were diagnosed with colorectal cancer prior to the recommended age (50y) for colorectal cancer surveillance compared to 11% of non-Hispanic Whites (FDR =0.007). Analysis of New York State registry data corroborated our findings that Hispanic colorectal cancer patients were diagnosed at a median younger age than non-Hispanic Whites. Permutation-based ANCOVA identified race/ethnicity and health insurance as significantly associated with age of diagnosis (P=0.001). Logistic regression selected (younger) age at diagnosis as being significantly associated with stage IV disease. The limitations of the case study reside in the use of self-reporting of race and ethnicity and in the small sample sizes. CONCLUSIONS: Hispanics may be at higher risk for colorectal cancer (y) and younger age at diagnosis is associated with advanced disease

    Leg Injuries To Coyotes Captured In Standard And Modified Soft Catch® Traps

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    Leg injuries of coyotes (Canis latrans) captured in standard No. 3 Soft Catch traps were compared with those captured in the same trap type modified with two additional coil springs. One hundred thirteen coyotes were trapped in southern California in conjunction with livestock predator control operations, 53 in standard traps, and 60 in modified traps. Observed injuries were similar in both trap types. The most frequent injuries were edematous hemorrhages and small cutaneous lacerations. Injuries, such as joint luxations and bone fractures, were noted more frequently for coyotes trapped in standard Soft Catch traps

    Cows Are Good Bean Market

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    Dairy cows will produce more butterfat on a ration in which whole (cracked) soybeans provide the protein supplement than on an ordinary ration of mixed grains which uses such a protein supplement as soybean oilmeal

    A Spectroscopic Survey of the Fields of 28 Strong Gravitational Lenses: Implications for H0H_0

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    Strong gravitational lensing provides an independent measurement of the Hubble parameter (H0H_0). One remaining systematic is a bias from the additional mass due to a galaxy group at the lens redshift or along the sightline. We quantify this bias for more than 20 strong lenses that have well-sampled sightline mass distributions, focusing on the convergence κ\kappa and shear γ\gamma. In 23% of these fields, a lens group contributes a \ge1% convergence bias; in 57%, there is a similarly significant line-of-sight group. For the nine time delay lens systems, H0H_0 is overestimated by 112+3^{+3}_{-2}% on average when groups are ignored. In 67% of fields with total κ\kappa \ge 0.01, line-of-sight groups contribute 2×\gtrsim 2\times more convergence than do lens groups, indicating that the lens group is not the only important mass. Lens environment affects the ratio of four (quad) to two (double) image systems; all seven quads have lens groups while only three of 10 doubles do, and the highest convergences due to lens groups are in quads. We calibrate the γ\gamma-κ\kappa relation: log(κtot)=(1.94±0.34)log(γtot)+(1.31±0.49)\log(\kappa_{\rm{tot}}) = (1.94 \pm 0.34) \log(\gamma_{\rm{tot}}) + (1.31 \pm 0.49) with a rms scatter of 0.34 dex. Shear, which, unlike convergence, can be measured directly from lensed images, can be a poor predictor of κ\kappa; for 19% of our fields, κ\kappa is 2γ\gtrsim 2\gamma. Thus, accurate cosmology using strong gravitational lenses requires precise measurement and correction for all significant structures in each lens field.Comment: 34 pages, 11 figures, accepted for publication in Ap
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