407 research outputs found

    How to Lead When You’re Not in Charge: Leveraging Influence When You Lack Authority

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    How to Lead When You’re not in Charge: Leveraging Influence When You Lack Authority. Clay Scroggins. Zondervan, 2017. ISBN: 978-0-310-53157-9 (hardcover), 978-0-310-53696-3 (paperback). $22.99 229 p

    The Western Ontario Shoulder Instability Index (WOSI): validity, reliability, and responsiveness retested with a Swedish translation

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    Background and purpose The WOSI score questionnaire is a tool designed for self-assessment of shoulder function for patients with instability problems. We made a translation into Swedish and retested the score by analyzing the psychometric properties validity, reliability, and responsiveness

    Quantitative assessment of fishing mortality for tautog (Tautoga onitis) in Virginia : preliminary report

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    Tautog (Tautoga onitis) have become a popular food and sport fish from Massachusetts to Virginia over the past ten years. Tautog are a long lived (30 years), late maturing (3-4 years), slow growing species. Although the maximum age recorded in Virginia is 31 years, recent studies have found that over 95% of the population is less than 12 years old (Hostetter and Munroe, 1993; White et aL, 1996). Adult tautog inhabit hard bottom wreck and reef environments, which are limited in Virginia\u27s waters and are easily located and re-located by fishermen. Tautog are known to migrate inshore-offshore in New England waters, with minimal movement of adults in the north-south direction (Cooper, 1966; Lynch, 1991 ). However, tautog movements are less well documented in Virginia waters (Bain and Lucy, 1996, 1997, unpublished 1997 data). The combination of slow growth, late maturity, limited habitat, and increased popularity amoung fishermen makes tautog stocks vulnerable to overfishing

    Gametogenic cycle of sea scallops (Placopecten magellanicus (Gmelin, 1791)) in the mid-Atlantic Bight

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    Gametogenesis of the sea scallop, Placopecten magellanicus , from 3 areas within the mid-Atlantic Bight was examined from January to December 1988. Histological and morphometric quantification of gonadal tissue concluded that a semiannual gametogenic cycle was characteristic of sea scallops from the mid-Atlantic Bight. The majority of spawning occurred in May and November. Gonadal development in spring comprised a longer period of time and resulted in greater fecundity than in fall. Differences were found in the timing and magnitude of the semiannual gametogenic processes between sex, area, and water depth within the study area. Varying temperature patterns between the mid-Atlantic Bight and more northerly resource areas may be partially responsible for the observed difference in gametogenic cycles. Semiannual spawning has potential implications for management strategies which are currently based on the assumption of annual spawning and recruitment events

    Dorsal and Ventral Color Patterns in a South Georgia Population of Agkistrodon piscivorus contanti, the Florida Cottonmouth

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    We examined dorsal pigments and ventral patterns in the Florida Cottonmouth, Agkistrodon piscivorus conanti, in the Alapahoochee watershed, Lowndes County, Georgia. Cottonmouths darken as they age; but the process has not been quantified in the literature. Thus, we examined both graphically and statistically changes in dorsal color pattern that occurs when snout vent length (SVL) increases as well as discrete patterns involving splotching and block-like patterns, and cream to white coloration on the ventral surface, which indicate underlying genetic factors. Snakes with SVLs between approximately 26.8 and 120.3 cm possessed an array of dorsal colors involving white, tan, dark brown and black. Snakes greater than 60 cm SVL had fewer dorsal white and tan colors with dark brown and black being the primary remaining colors in snakes up to 120 cm. Nonparametric regression analysis provided graphic representation of the process, which is confirmed by correlation analyses. Ventral color patterns show discrete relationships involving the occurrence of all white coloration and splotch and block patterns involving dark pigments. If a block pattern was present, then a splotch pattern was less likely to be present and vice versa regardless of SVL. Correlation analysis supports the observed ventral patterns. Possible genetic explanations would be a single locus with incomplete dominance expressed by one allele resulting in all white or no dark blocked pattern, another allele resulting in incomplete dark bars, and heterozygotes showing only partial bars or blotches primarily on the rear location anterior to the vent

    The factor validity of the Western Ontario Rotator Cuff Index

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    BACKGROUND: The Western Ontario Rotator Cuff Index (WORC) is a self-report questionnaire developed specifically to evaluate disability in persons with pathology of the rotator cuff of the shoulder. The authors created items in 5 categories based on a model of quality of life, but never validated this structure. The purpose of this study was to examine the validity of the original 5-domain model of the WORC by performing factor analysis. METHODS: Three hundred twenty nine subjects (age, mean: 52, SD: 12) were tested prior to undergoing surgery for rotator cuff pathologies. They completed the WORC, a self-report questionnaire, which has 21 items on the effect of the rotator cuff problem on symptoms, activities and emotions. Statistical calculations included correlations between items, Cronbach's alpha of the total scale and subscales, and principal component factor analysis with oblique rotation. RESULTS: Correlations ranged from .09 to .70 between all the items, from .29 to .70 between items within a subscale, and from .53 to .72 between subscale scores. Cronbach's alpha was .93 for the total scale, and .72 to .82 for the subscales. The factor analysis produced 3 factors that explained 57% of the variance. The first factor included symptoms and emotional items, the second included strength items and the third included daily activities. CONCLUSION: The results of this study did not support the 5-domain model of the WORC

    MRI and Neuropsychological Correlates of Carbon Monoxide Exposure: A Case Report

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    A 45-year-old woman experienced long-term, chronic exposure to carbon monoxide in the restaurant kitchen where she was employed as a cook. After returning to the restaurant after 5 days off work, she noticed that her symptoms returned immediately; she then aired out the room and called the gas company. Approximately 6 hr after a leak was detected, the patient went to the hospital, where her carboxyhemoglobin was found to be within normal limits and results of a neurologic examination were described as normal. Based on her symptoms, the patient believed she had been exposed to CO for at least 1 year before the leak was discovered. Initially, she experienced flu-like symptoms, which eventually resolved. At the time of her first neuropsychological evaluation (17 months after the exposure was identified), her persisting complaints included difficulties in reading, writing, speaking and word retrieval. The test results were consistent with secondary frontal lobe dysfunction associated with subcortical disorders such as those seen after CO exposure. Results of a subsequent neuropsychological examination (29 months postexposure) showed slight improvement in performance, but her performance was still consistent with mild frontal/subcortical dysfunction. Although the initial screening of a brain magnetic resonance image (MRI) performed 15 months after the exposure was interpreted as being within normal limits, two subsequent blind reviews of the same scans identified multiple bilateral lesions in the basal ganglia, which were consistent with chronic CO exposure. We present this case as an example of the utility of MRI and neuropsychological examinations in detecting central nervous system dysfunction secondary to CO exposure
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